gitkon commit gitk: Use mktemp -d to avoid predictable temporary directories (105b5d3)
   1#!/bin/sh
   2# Tcl ignores the next line -*- tcl -*- \
   3exec wish "$0" -- "$@"
   4
   5# Copyright © 2005-2014 Paul Mackerras.  All rights reserved.
   6# This program is free software; it may be used, copied, modified
   7# and distributed under the terms of the GNU General Public Licence,
   8# either version 2, or (at your option) any later version.
   9
  10package require Tk
  11
  12proc hasworktree {} {
  13    return [expr {[exec git rev-parse --is-bare-repository] == "false" &&
  14                  [exec git rev-parse --is-inside-git-dir] == "false"}]
  15}
  16
  17proc reponame {} {
  18    global gitdir
  19    set n [file normalize $gitdir]
  20    if {[string match "*/.git" $n]} {
  21        set n [string range $n 0 end-5]
  22    }
  23    return [file tail $n]
  24}
  25
  26proc gitworktree {} {
  27    variable _gitworktree
  28    if {[info exists _gitworktree]} {
  29        return $_gitworktree
  30    }
  31    # v1.7.0 introduced --show-toplevel to return the canonical work-tree
  32    if {[catch {set _gitworktree [exec git rev-parse --show-toplevel]}]} {
  33        # try to set work tree from environment, core.worktree or use
  34        # cdup to obtain a relative path to the top of the worktree. If
  35        # run from the top, the ./ prefix ensures normalize expands pwd.
  36        if {[catch { set _gitworktree $env(GIT_WORK_TREE) }]} {
  37            catch {set _gitworktree [exec git config --get core.worktree]}
  38            if {$_gitworktree eq ""} {
  39                set _gitworktree [file normalize ./[exec git rev-parse --show-cdup]]
  40            }
  41        }
  42    }
  43    return $_gitworktree
  44}
  45
  46# A simple scheduler for compute-intensive stuff.
  47# The aim is to make sure that event handlers for GUI actions can
  48# run at least every 50-100 ms.  Unfortunately fileevent handlers are
  49# run before X event handlers, so reading from a fast source can
  50# make the GUI completely unresponsive.
  51proc run args {
  52    global isonrunq runq currunq
  53
  54    set script $args
  55    if {[info exists isonrunq($script)]} return
  56    if {$runq eq {} && ![info exists currunq]} {
  57        after idle dorunq
  58    }
  59    lappend runq [list {} $script]
  60    set isonrunq($script) 1
  61}
  62
  63proc filerun {fd script} {
  64    fileevent $fd readable [list filereadable $fd $script]
  65}
  66
  67proc filereadable {fd script} {
  68    global runq currunq
  69
  70    fileevent $fd readable {}
  71    if {$runq eq {} && ![info exists currunq]} {
  72        after idle dorunq
  73    }
  74    lappend runq [list $fd $script]
  75}
  76
  77proc nukefile {fd} {
  78    global runq
  79
  80    for {set i 0} {$i < [llength $runq]} {} {
  81        if {[lindex $runq $i 0] eq $fd} {
  82            set runq [lreplace $runq $i $i]
  83        } else {
  84            incr i
  85        }
  86    }
  87}
  88
  89proc dorunq {} {
  90    global isonrunq runq currunq
  91
  92    set tstart [clock clicks -milliseconds]
  93    set t0 $tstart
  94    while {[llength $runq] > 0} {
  95        set fd [lindex $runq 0 0]
  96        set script [lindex $runq 0 1]
  97        set currunq [lindex $runq 0]
  98        set runq [lrange $runq 1 end]
  99        set repeat [eval $script]
 100        unset currunq
 101        set t1 [clock clicks -milliseconds]
 102        set t [expr {$t1 - $t0}]
 103        if {$repeat ne {} && $repeat} {
 104            if {$fd eq {} || $repeat == 2} {
 105                # script returns 1 if it wants to be readded
 106                # file readers return 2 if they could do more straight away
 107                lappend runq [list $fd $script]
 108            } else {
 109                fileevent $fd readable [list filereadable $fd $script]
 110            }
 111        } elseif {$fd eq {}} {
 112            unset isonrunq($script)
 113        }
 114        set t0 $t1
 115        if {$t1 - $tstart >= 80} break
 116    }
 117    if {$runq ne {}} {
 118        after idle dorunq
 119    }
 120}
 121
 122proc reg_instance {fd} {
 123    global commfd leftover loginstance
 124
 125    set i [incr loginstance]
 126    set commfd($i) $fd
 127    set leftover($i) {}
 128    return $i
 129}
 130
 131proc unmerged_files {files} {
 132    global nr_unmerged
 133
 134    # find the list of unmerged files
 135    set mlist {}
 136    set nr_unmerged 0
 137    if {[catch {
 138        set fd [open "| git ls-files -u" r]
 139    } err]} {
 140        show_error {} . "[mc "Couldn't get list of unmerged files:"] $err"
 141        exit 1
 142    }
 143    while {[gets $fd line] >= 0} {
 144        set i [string first "\t" $line]
 145        if {$i < 0} continue
 146        set fname [string range $line [expr {$i+1}] end]
 147        if {[lsearch -exact $mlist $fname] >= 0} continue
 148        incr nr_unmerged
 149        if {$files eq {} || [path_filter $files $fname]} {
 150            lappend mlist $fname
 151        }
 152    }
 153    catch {close $fd}
 154    return $mlist
 155}
 156
 157proc parseviewargs {n arglist} {
 158    global vdatemode vmergeonly vflags vdflags vrevs vfiltered vorigargs env
 159    global vinlinediff
 160    global worddiff git_version
 161
 162    set vdatemode($n) 0
 163    set vmergeonly($n) 0
 164    set vinlinediff($n) 0
 165    set glflags {}
 166    set diffargs {}
 167    set nextisval 0
 168    set revargs {}
 169    set origargs $arglist
 170    set allknown 1
 171    set filtered 0
 172    set i -1
 173    foreach arg $arglist {
 174        incr i
 175        if {$nextisval} {
 176            lappend glflags $arg
 177            set nextisval 0
 178            continue
 179        }
 180        switch -glob -- $arg {
 181            "-d" -
 182            "--date-order" {
 183                set vdatemode($n) 1
 184                # remove from origargs in case we hit an unknown option
 185                set origargs [lreplace $origargs $i $i]
 186                incr i -1
 187            }
 188            "-[puabwcrRBMC]" -
 189            "--no-renames" - "--full-index" - "--binary" - "--abbrev=*" -
 190            "--find-copies-harder" - "-l*" - "--ext-diff" - "--no-ext-diff" -
 191            "--src-prefix=*" - "--dst-prefix=*" - "--no-prefix" -
 192            "-O*" - "--text" - "--full-diff" - "--ignore-space-at-eol" -
 193            "--ignore-space-change" - "-U*" - "--unified=*" {
 194                # These request or affect diff output, which we don't want.
 195                # Some could be used to set our defaults for diff display.
 196                lappend diffargs $arg
 197            }
 198            "--raw" - "--patch-with-raw" - "--patch-with-stat" -
 199            "--name-only" - "--name-status" - "--color" -
 200            "--log-size" - "--pretty=*" - "--decorate" - "--abbrev-commit" -
 201            "--cc" - "-z" - "--header" - "--parents" - "--boundary" -
 202            "--no-color" - "-g" - "--walk-reflogs" - "--no-walk" -
 203            "--timestamp" - "relative-date" - "--date=*" - "--stdin" -
 204            "--objects" - "--objects-edge" - "--reverse" {
 205                # These cause our parsing of git log's output to fail, or else
 206                # they're options we want to set ourselves, so ignore them.
 207            }
 208            "--color-words*" - "--word-diff=color" {
 209                # These trigger a word diff in the console interface,
 210                # so help the user by enabling our own support
 211                if {[package vcompare $git_version "1.7.2"] >= 0} {
 212                    set worddiff [mc "Color words"]
 213                }
 214            }
 215            "--word-diff*" {
 216                if {[package vcompare $git_version "1.7.2"] >= 0} {
 217                    set worddiff [mc "Markup words"]
 218                }
 219            }
 220            "--stat=*" - "--numstat" - "--shortstat" - "--summary" -
 221            "--check" - "--exit-code" - "--quiet" - "--topo-order" -
 222            "--full-history" - "--dense" - "--sparse" -
 223            "--follow" - "--left-right" - "--encoding=*" {
 224                # These are harmless, and some are even useful
 225                lappend glflags $arg
 226            }
 227            "--diff-filter=*" - "--no-merges" - "--unpacked" -
 228            "--max-count=*" - "--skip=*" - "--since=*" - "--after=*" -
 229            "--until=*" - "--before=*" - "--max-age=*" - "--min-age=*" -
 230            "--author=*" - "--committer=*" - "--grep=*" - "-[iE]" -
 231            "--remove-empty" - "--first-parent" - "--cherry-pick" -
 232            "-S*" - "-G*" - "--pickaxe-all" - "--pickaxe-regex" -
 233            "--simplify-by-decoration" {
 234                # These mean that we get a subset of the commits
 235                set filtered 1
 236                lappend glflags $arg
 237            }
 238            "-L*" {
 239                # Line-log with 'stuck' argument (unstuck form is
 240                # not supported)
 241                set filtered 1
 242                set vinlinediff($n) 1
 243                set allknown 0
 244                lappend glflags $arg
 245            }
 246            "-n" {
 247                # This appears to be the only one that has a value as a
 248                # separate word following it
 249                set filtered 1
 250                set nextisval 1
 251                lappend glflags $arg
 252            }
 253            "--not" - "--all" {
 254                lappend revargs $arg
 255            }
 256            "--merge" {
 257                set vmergeonly($n) 1
 258                # git rev-parse doesn't understand --merge
 259                lappend revargs --gitk-symmetric-diff-marker MERGE_HEAD...HEAD
 260            }
 261            "--no-replace-objects" {
 262                set env(GIT_NO_REPLACE_OBJECTS) "1"
 263            }
 264            "-*" {
 265                # Other flag arguments including -<n>
 266                if {[string is digit -strict [string range $arg 1 end]]} {
 267                    set filtered 1
 268                } else {
 269                    # a flag argument that we don't recognize;
 270                    # that means we can't optimize
 271                    set allknown 0
 272                }
 273                lappend glflags $arg
 274            }
 275            default {
 276                # Non-flag arguments specify commits or ranges of commits
 277                if {[string match "*...*" $arg]} {
 278                    lappend revargs --gitk-symmetric-diff-marker
 279                }
 280                lappend revargs $arg
 281            }
 282        }
 283    }
 284    set vdflags($n) $diffargs
 285    set vflags($n) $glflags
 286    set vrevs($n) $revargs
 287    set vfiltered($n) $filtered
 288    set vorigargs($n) $origargs
 289    return $allknown
 290}
 291
 292proc parseviewrevs {view revs} {
 293    global vposids vnegids
 294
 295    if {$revs eq {}} {
 296        set revs HEAD
 297    }
 298    if {[catch {set ids [eval exec git rev-parse $revs]} err]} {
 299        # we get stdout followed by stderr in $err
 300        # for an unknown rev, git rev-parse echoes it and then errors out
 301        set errlines [split $err "\n"]
 302        set badrev {}
 303        for {set l 0} {$l < [llength $errlines]} {incr l} {
 304            set line [lindex $errlines $l]
 305            if {!([string length $line] == 40 && [string is xdigit $line])} {
 306                if {[string match "fatal:*" $line]} {
 307                    if {[string match "fatal: ambiguous argument*" $line]
 308                        && $badrev ne {}} {
 309                        if {[llength $badrev] == 1} {
 310                            set err "unknown revision $badrev"
 311                        } else {
 312                            set err "unknown revisions: [join $badrev ", "]"
 313                        }
 314                    } else {
 315                        set err [join [lrange $errlines $l end] "\n"]
 316                    }
 317                    break
 318                }
 319                lappend badrev $line
 320            }
 321        }
 322        error_popup "[mc "Error parsing revisions:"] $err"
 323        return {}
 324    }
 325    set ret {}
 326    set pos {}
 327    set neg {}
 328    set sdm 0
 329    foreach id [split $ids "\n"] {
 330        if {$id eq "--gitk-symmetric-diff-marker"} {
 331            set sdm 4
 332        } elseif {[string match "^*" $id]} {
 333            if {$sdm != 1} {
 334                lappend ret $id
 335                if {$sdm == 3} {
 336                    set sdm 0
 337                }
 338            }
 339            lappend neg [string range $id 1 end]
 340        } else {
 341            if {$sdm != 2} {
 342                lappend ret $id
 343            } else {
 344                lset ret end $id...[lindex $ret end]
 345            }
 346            lappend pos $id
 347        }
 348        incr sdm -1
 349    }
 350    set vposids($view) $pos
 351    set vnegids($view) $neg
 352    return $ret
 353}
 354
 355# Start off a git log process and arrange to read its output
 356proc start_rev_list {view} {
 357    global startmsecs commitidx viewcomplete curview
 358    global tclencoding
 359    global viewargs viewargscmd viewfiles vfilelimit
 360    global showlocalchanges
 361    global viewactive viewinstances vmergeonly
 362    global mainheadid viewmainheadid viewmainheadid_orig
 363    global vcanopt vflags vrevs vorigargs
 364    global show_notes
 365
 366    set startmsecs [clock clicks -milliseconds]
 367    set commitidx($view) 0
 368    # these are set this way for the error exits
 369    set viewcomplete($view) 1
 370    set viewactive($view) 0
 371    varcinit $view
 372
 373    set args $viewargs($view)
 374    if {$viewargscmd($view) ne {}} {
 375        if {[catch {
 376            set str [exec sh -c $viewargscmd($view)]
 377        } err]} {
 378            error_popup "[mc "Error executing --argscmd command:"] $err"
 379            return 0
 380        }
 381        set args [concat $args [split $str "\n"]]
 382    }
 383    set vcanopt($view) [parseviewargs $view $args]
 384
 385    set files $viewfiles($view)
 386    if {$vmergeonly($view)} {
 387        set files [unmerged_files $files]
 388        if {$files eq {}} {
 389            global nr_unmerged
 390            if {$nr_unmerged == 0} {
 391                error_popup [mc "No files selected: --merge specified but\
 392                             no files are unmerged."]
 393            } else {
 394                error_popup [mc "No files selected: --merge specified but\
 395                             no unmerged files are within file limit."]
 396            }
 397            return 0
 398        }
 399    }
 400    set vfilelimit($view) $files
 401
 402    if {$vcanopt($view)} {
 403        set revs [parseviewrevs $view $vrevs($view)]
 404        if {$revs eq {}} {
 405            return 0
 406        }
 407        set args [concat $vflags($view) $revs]
 408    } else {
 409        set args $vorigargs($view)
 410    }
 411
 412    if {[catch {
 413        set fd [open [concat | git log --no-color -z --pretty=raw $show_notes \
 414                        --parents --boundary $args "--" $files] r]
 415    } err]} {
 416        error_popup "[mc "Error executing git log:"] $err"
 417        return 0
 418    }
 419    set i [reg_instance $fd]
 420    set viewinstances($view) [list $i]
 421    set viewmainheadid($view) $mainheadid
 422    set viewmainheadid_orig($view) $mainheadid
 423    if {$files ne {} && $mainheadid ne {}} {
 424        get_viewmainhead $view
 425    }
 426    if {$showlocalchanges && $viewmainheadid($view) ne {}} {
 427        interestedin $viewmainheadid($view) dodiffindex
 428    }
 429    fconfigure $fd -blocking 0 -translation lf -eofchar {}
 430    if {$tclencoding != {}} {
 431        fconfigure $fd -encoding $tclencoding
 432    }
 433    filerun $fd [list getcommitlines $fd $i $view 0]
 434    nowbusy $view [mc "Reading"]
 435    set viewcomplete($view) 0
 436    set viewactive($view) 1
 437    return 1
 438}
 439
 440proc stop_instance {inst} {
 441    global commfd leftover
 442
 443    set fd $commfd($inst)
 444    catch {
 445        set pid [pid $fd]
 446
 447        if {$::tcl_platform(platform) eq {windows}} {
 448            exec kill -f $pid
 449        } else {
 450            exec kill $pid
 451        }
 452    }
 453    catch {close $fd}
 454    nukefile $fd
 455    unset commfd($inst)
 456    unset leftover($inst)
 457}
 458
 459proc stop_backends {} {
 460    global commfd
 461
 462    foreach inst [array names commfd] {
 463        stop_instance $inst
 464    }
 465}
 466
 467proc stop_rev_list {view} {
 468    global viewinstances
 469
 470    foreach inst $viewinstances($view) {
 471        stop_instance $inst
 472    }
 473    set viewinstances($view) {}
 474}
 475
 476proc reset_pending_select {selid} {
 477    global pending_select mainheadid selectheadid
 478
 479    if {$selid ne {}} {
 480        set pending_select $selid
 481    } elseif {$selectheadid ne {}} {
 482        set pending_select $selectheadid
 483    } else {
 484        set pending_select $mainheadid
 485    }
 486}
 487
 488proc getcommits {selid} {
 489    global canv curview need_redisplay viewactive
 490
 491    initlayout
 492    if {[start_rev_list $curview]} {
 493        reset_pending_select $selid
 494        show_status [mc "Reading commits..."]
 495        set need_redisplay 1
 496    } else {
 497        show_status [mc "No commits selected"]
 498    }
 499}
 500
 501proc updatecommits {} {
 502    global curview vcanopt vorigargs vfilelimit viewinstances
 503    global viewactive viewcomplete tclencoding
 504    global startmsecs showneartags showlocalchanges
 505    global mainheadid viewmainheadid viewmainheadid_orig pending_select
 506    global hasworktree
 507    global varcid vposids vnegids vflags vrevs
 508    global show_notes
 509
 510    set hasworktree [hasworktree]
 511    rereadrefs
 512    set view $curview
 513    if {$mainheadid ne $viewmainheadid_orig($view)} {
 514        if {$showlocalchanges} {
 515            dohidelocalchanges
 516        }
 517        set viewmainheadid($view) $mainheadid
 518        set viewmainheadid_orig($view) $mainheadid
 519        if {$vfilelimit($view) ne {}} {
 520            get_viewmainhead $view
 521        }
 522    }
 523    if {$showlocalchanges} {
 524        doshowlocalchanges
 525    }
 526    if {$vcanopt($view)} {
 527        set oldpos $vposids($view)
 528        set oldneg $vnegids($view)
 529        set revs [parseviewrevs $view $vrevs($view)]
 530        if {$revs eq {}} {
 531            return
 532        }
 533        # note: getting the delta when negative refs change is hard,
 534        # and could require multiple git log invocations, so in that
 535        # case we ask git log for all the commits (not just the delta)
 536        if {$oldneg eq $vnegids($view)} {
 537            set newrevs {}
 538            set npos 0
 539            # take out positive refs that we asked for before or
 540            # that we have already seen
 541            foreach rev $revs {
 542                if {[string length $rev] == 40} {
 543                    if {[lsearch -exact $oldpos $rev] < 0
 544                        && ![info exists varcid($view,$rev)]} {
 545                        lappend newrevs $rev
 546                        incr npos
 547                    }
 548                } else {
 549                    lappend $newrevs $rev
 550                }
 551            }
 552            if {$npos == 0} return
 553            set revs $newrevs
 554            set vposids($view) [lsort -unique [concat $oldpos $vposids($view)]]
 555        }
 556        set args [concat $vflags($view) $revs --not $oldpos]
 557    } else {
 558        set args $vorigargs($view)
 559    }
 560    if {[catch {
 561        set fd [open [concat | git log --no-color -z --pretty=raw $show_notes \
 562                        --parents --boundary $args "--" $vfilelimit($view)] r]
 563    } err]} {
 564        error_popup "[mc "Error executing git log:"] $err"
 565        return
 566    }
 567    if {$viewactive($view) == 0} {
 568        set startmsecs [clock clicks -milliseconds]
 569    }
 570    set i [reg_instance $fd]
 571    lappend viewinstances($view) $i
 572    fconfigure $fd -blocking 0 -translation lf -eofchar {}
 573    if {$tclencoding != {}} {
 574        fconfigure $fd -encoding $tclencoding
 575    }
 576    filerun $fd [list getcommitlines $fd $i $view 1]
 577    incr viewactive($view)
 578    set viewcomplete($view) 0
 579    reset_pending_select {}
 580    nowbusy $view [mc "Reading"]
 581    if {$showneartags} {
 582        getallcommits
 583    }
 584}
 585
 586proc reloadcommits {} {
 587    global curview viewcomplete selectedline currentid thickerline
 588    global showneartags treediffs commitinterest cached_commitrow
 589    global targetid
 590
 591    set selid {}
 592    if {$selectedline ne {}} {
 593        set selid $currentid
 594    }
 595
 596    if {!$viewcomplete($curview)} {
 597        stop_rev_list $curview
 598    }
 599    resetvarcs $curview
 600    set selectedline {}
 601    catch {unset currentid}
 602    catch {unset thickerline}
 603    catch {unset treediffs}
 604    readrefs
 605    changedrefs
 606    if {$showneartags} {
 607        getallcommits
 608    }
 609    clear_display
 610    catch {unset commitinterest}
 611    catch {unset cached_commitrow}
 612    catch {unset targetid}
 613    setcanvscroll
 614    getcommits $selid
 615    return 0
 616}
 617
 618# This makes a string representation of a positive integer which
 619# sorts as a string in numerical order
 620proc strrep {n} {
 621    if {$n < 16} {
 622        return [format "%x" $n]
 623    } elseif {$n < 256} {
 624        return [format "x%.2x" $n]
 625    } elseif {$n < 65536} {
 626        return [format "y%.4x" $n]
 627    }
 628    return [format "z%.8x" $n]
 629}
 630
 631# Procedures used in reordering commits from git log (without
 632# --topo-order) into the order for display.
 633
 634proc varcinit {view} {
 635    global varcstart vupptr vdownptr vleftptr vbackptr varctok varcrow
 636    global vtokmod varcmod vrowmod varcix vlastins
 637
 638    set varcstart($view) {{}}
 639    set vupptr($view) {0}
 640    set vdownptr($view) {0}
 641    set vleftptr($view) {0}
 642    set vbackptr($view) {0}
 643    set varctok($view) {{}}
 644    set varcrow($view) {{}}
 645    set vtokmod($view) {}
 646    set varcmod($view) 0
 647    set vrowmod($view) 0
 648    set varcix($view) {{}}
 649    set vlastins($view) {0}
 650}
 651
 652proc resetvarcs {view} {
 653    global varcid varccommits parents children vseedcount ordertok
 654    global vshortids
 655
 656    foreach vid [array names varcid $view,*] {
 657        unset varcid($vid)
 658        unset children($vid)
 659        unset parents($vid)
 660    }
 661    foreach vid [array names vshortids $view,*] {
 662        unset vshortids($vid)
 663    }
 664    # some commits might have children but haven't been seen yet
 665    foreach vid [array names children $view,*] {
 666        unset children($vid)
 667    }
 668    foreach va [array names varccommits $view,*] {
 669        unset varccommits($va)
 670    }
 671    foreach vd [array names vseedcount $view,*] {
 672        unset vseedcount($vd)
 673    }
 674    catch {unset ordertok}
 675}
 676
 677# returns a list of the commits with no children
 678proc seeds {v} {
 679    global vdownptr vleftptr varcstart
 680
 681    set ret {}
 682    set a [lindex $vdownptr($v) 0]
 683    while {$a != 0} {
 684        lappend ret [lindex $varcstart($v) $a]
 685        set a [lindex $vleftptr($v) $a]
 686    }
 687    return $ret
 688}
 689
 690proc newvarc {view id} {
 691    global varcid varctok parents children vdatemode
 692    global vupptr vdownptr vleftptr vbackptr varcrow varcix varcstart
 693    global commitdata commitinfo vseedcount varccommits vlastins
 694
 695    set a [llength $varctok($view)]
 696    set vid $view,$id
 697    if {[llength $children($vid)] == 0 || $vdatemode($view)} {
 698        if {![info exists commitinfo($id)]} {
 699            parsecommit $id $commitdata($id) 1
 700        }
 701        set cdate [lindex [lindex $commitinfo($id) 4] 0]
 702        if {![string is integer -strict $cdate]} {
 703            set cdate 0
 704        }
 705        if {![info exists vseedcount($view,$cdate)]} {
 706            set vseedcount($view,$cdate) -1
 707        }
 708        set c [incr vseedcount($view,$cdate)]
 709        set cdate [expr {$cdate ^ 0xffffffff}]
 710        set tok "s[strrep $cdate][strrep $c]"
 711    } else {
 712        set tok {}
 713    }
 714    set ka 0
 715    if {[llength $children($vid)] > 0} {
 716        set kid [lindex $children($vid) end]
 717        set k $varcid($view,$kid)
 718        if {[string compare [lindex $varctok($view) $k] $tok] > 0} {
 719            set ki $kid
 720            set ka $k
 721            set tok [lindex $varctok($view) $k]
 722        }
 723    }
 724    if {$ka != 0} {
 725        set i [lsearch -exact $parents($view,$ki) $id]
 726        set j [expr {[llength $parents($view,$ki)] - 1 - $i}]
 727        append tok [strrep $j]
 728    }
 729    set c [lindex $vlastins($view) $ka]
 730    if {$c == 0 || [string compare $tok [lindex $varctok($view) $c]] < 0} {
 731        set c $ka
 732        set b [lindex $vdownptr($view) $ka]
 733    } else {
 734        set b [lindex $vleftptr($view) $c]
 735    }
 736    while {$b != 0 && [string compare $tok [lindex $varctok($view) $b]] >= 0} {
 737        set c $b
 738        set b [lindex $vleftptr($view) $c]
 739    }
 740    if {$c == $ka} {
 741        lset vdownptr($view) $ka $a
 742        lappend vbackptr($view) 0
 743    } else {
 744        lset vleftptr($view) $c $a
 745        lappend vbackptr($view) $c
 746    }
 747    lset vlastins($view) $ka $a
 748    lappend vupptr($view) $ka
 749    lappend vleftptr($view) $b
 750    if {$b != 0} {
 751        lset vbackptr($view) $b $a
 752    }
 753    lappend varctok($view) $tok
 754    lappend varcstart($view) $id
 755    lappend vdownptr($view) 0
 756    lappend varcrow($view) {}
 757    lappend varcix($view) {}
 758    set varccommits($view,$a) {}
 759    lappend vlastins($view) 0
 760    return $a
 761}
 762
 763proc splitvarc {p v} {
 764    global varcid varcstart varccommits varctok vtokmod
 765    global vupptr vdownptr vleftptr vbackptr varcix varcrow vlastins
 766
 767    set oa $varcid($v,$p)
 768    set otok [lindex $varctok($v) $oa]
 769    set ac $varccommits($v,$oa)
 770    set i [lsearch -exact $varccommits($v,$oa) $p]
 771    if {$i <= 0} return
 772    set na [llength $varctok($v)]
 773    # "%" sorts before "0"...
 774    set tok "$otok%[strrep $i]"
 775    lappend varctok($v) $tok
 776    lappend varcrow($v) {}
 777    lappend varcix($v) {}
 778    set varccommits($v,$oa) [lrange $ac 0 [expr {$i - 1}]]
 779    set varccommits($v,$na) [lrange $ac $i end]
 780    lappend varcstart($v) $p
 781    foreach id $varccommits($v,$na) {
 782        set varcid($v,$id) $na
 783    }
 784    lappend vdownptr($v) [lindex $vdownptr($v) $oa]
 785    lappend vlastins($v) [lindex $vlastins($v) $oa]
 786    lset vdownptr($v) $oa $na
 787    lset vlastins($v) $oa 0
 788    lappend vupptr($v) $oa
 789    lappend vleftptr($v) 0
 790    lappend vbackptr($v) 0
 791    for {set b [lindex $vdownptr($v) $na]} {$b != 0} {set b [lindex $vleftptr($v) $b]} {
 792        lset vupptr($v) $b $na
 793    }
 794    if {[string compare $otok $vtokmod($v)] <= 0} {
 795        modify_arc $v $oa
 796    }
 797}
 798
 799proc renumbervarc {a v} {
 800    global parents children varctok varcstart varccommits
 801    global vupptr vdownptr vleftptr vbackptr vlastins varcid vtokmod vdatemode
 802
 803    set t1 [clock clicks -milliseconds]
 804    set todo {}
 805    set isrelated($a) 1
 806    set kidchanged($a) 1
 807    set ntot 0
 808    while {$a != 0} {
 809        if {[info exists isrelated($a)]} {
 810            lappend todo $a
 811            set id [lindex $varccommits($v,$a) end]
 812            foreach p $parents($v,$id) {
 813                if {[info exists varcid($v,$p)]} {
 814                    set isrelated($varcid($v,$p)) 1
 815                }
 816            }
 817        }
 818        incr ntot
 819        set b [lindex $vdownptr($v) $a]
 820        if {$b == 0} {
 821            while {$a != 0} {
 822                set b [lindex $vleftptr($v) $a]
 823                if {$b != 0} break
 824                set a [lindex $vupptr($v) $a]
 825            }
 826        }
 827        set a $b
 828    }
 829    foreach a $todo {
 830        if {![info exists kidchanged($a)]} continue
 831        set id [lindex $varcstart($v) $a]
 832        if {[llength $children($v,$id)] > 1} {
 833            set children($v,$id) [lsort -command [list vtokcmp $v] \
 834                                      $children($v,$id)]
 835        }
 836        set oldtok [lindex $varctok($v) $a]
 837        if {!$vdatemode($v)} {
 838            set tok {}
 839        } else {
 840            set tok $oldtok
 841        }
 842        set ka 0
 843        set kid [last_real_child $v,$id]
 844        if {$kid ne {}} {
 845            set k $varcid($v,$kid)
 846            if {[string compare [lindex $varctok($v) $k] $tok] > 0} {
 847                set ki $kid
 848                set ka $k
 849                set tok [lindex $varctok($v) $k]
 850            }
 851        }
 852        if {$ka != 0} {
 853            set i [lsearch -exact $parents($v,$ki) $id]
 854            set j [expr {[llength $parents($v,$ki)] - 1 - $i}]
 855            append tok [strrep $j]
 856        }
 857        if {$tok eq $oldtok} {
 858            continue
 859        }
 860        set id [lindex $varccommits($v,$a) end]
 861        foreach p $parents($v,$id) {
 862            if {[info exists varcid($v,$p)]} {
 863                set kidchanged($varcid($v,$p)) 1
 864            } else {
 865                set sortkids($p) 1
 866            }
 867        }
 868        lset varctok($v) $a $tok
 869        set b [lindex $vupptr($v) $a]
 870        if {$b != $ka} {
 871            if {[string compare [lindex $varctok($v) $ka] $vtokmod($v)] < 0} {
 872                modify_arc $v $ka
 873            }
 874            if {[string compare [lindex $varctok($v) $b] $vtokmod($v)] < 0} {
 875                modify_arc $v $b
 876            }
 877            set c [lindex $vbackptr($v) $a]
 878            set d [lindex $vleftptr($v) $a]
 879            if {$c == 0} {
 880                lset vdownptr($v) $b $d
 881            } else {
 882                lset vleftptr($v) $c $d
 883            }
 884            if {$d != 0} {
 885                lset vbackptr($v) $d $c
 886            }
 887            if {[lindex $vlastins($v) $b] == $a} {
 888                lset vlastins($v) $b $c
 889            }
 890            lset vupptr($v) $a $ka
 891            set c [lindex $vlastins($v) $ka]
 892            if {$c == 0 || \
 893                    [string compare $tok [lindex $varctok($v) $c]] < 0} {
 894                set c $ka
 895                set b [lindex $vdownptr($v) $ka]
 896            } else {
 897                set b [lindex $vleftptr($v) $c]
 898            }
 899            while {$b != 0 && \
 900                      [string compare $tok [lindex $varctok($v) $b]] >= 0} {
 901                set c $b
 902                set b [lindex $vleftptr($v) $c]
 903            }
 904            if {$c == $ka} {
 905                lset vdownptr($v) $ka $a
 906                lset vbackptr($v) $a 0
 907            } else {
 908                lset vleftptr($v) $c $a
 909                lset vbackptr($v) $a $c
 910            }
 911            lset vleftptr($v) $a $b
 912            if {$b != 0} {
 913                lset vbackptr($v) $b $a
 914            }
 915            lset vlastins($v) $ka $a
 916        }
 917    }
 918    foreach id [array names sortkids] {
 919        if {[llength $children($v,$id)] > 1} {
 920            set children($v,$id) [lsort -command [list vtokcmp $v] \
 921                                      $children($v,$id)]
 922        }
 923    }
 924    set t2 [clock clicks -milliseconds]
 925    #puts "renumbervarc did [llength $todo] of $ntot arcs in [expr {$t2-$t1}]ms"
 926}
 927
 928# Fix up the graph after we have found out that in view $v,
 929# $p (a commit that we have already seen) is actually the parent
 930# of the last commit in arc $a.
 931proc fix_reversal {p a v} {
 932    global varcid varcstart varctok vupptr
 933
 934    set pa $varcid($v,$p)
 935    if {$p ne [lindex $varcstart($v) $pa]} {
 936        splitvarc $p $v
 937        set pa $varcid($v,$p)
 938    }
 939    # seeds always need to be renumbered
 940    if {[lindex $vupptr($v) $pa] == 0 ||
 941        [string compare [lindex $varctok($v) $a] \
 942             [lindex $varctok($v) $pa]] > 0} {
 943        renumbervarc $pa $v
 944    }
 945}
 946
 947proc insertrow {id p v} {
 948    global cmitlisted children parents varcid varctok vtokmod
 949    global varccommits ordertok commitidx numcommits curview
 950    global targetid targetrow vshortids
 951
 952    readcommit $id
 953    set vid $v,$id
 954    set cmitlisted($vid) 1
 955    set children($vid) {}
 956    set parents($vid) [list $p]
 957    set a [newvarc $v $id]
 958    set varcid($vid) $a
 959    lappend vshortids($v,[string range $id 0 3]) $id
 960    if {[string compare [lindex $varctok($v) $a] $vtokmod($v)] < 0} {
 961        modify_arc $v $a
 962    }
 963    lappend varccommits($v,$a) $id
 964    set vp $v,$p
 965    if {[llength [lappend children($vp) $id]] > 1} {
 966        set children($vp) [lsort -command [list vtokcmp $v] $children($vp)]
 967        catch {unset ordertok}
 968    }
 969    fix_reversal $p $a $v
 970    incr commitidx($v)
 971    if {$v == $curview} {
 972        set numcommits $commitidx($v)
 973        setcanvscroll
 974        if {[info exists targetid]} {
 975            if {![comes_before $targetid $p]} {
 976                incr targetrow
 977            }
 978        }
 979    }
 980}
 981
 982proc insertfakerow {id p} {
 983    global varcid varccommits parents children cmitlisted
 984    global commitidx varctok vtokmod targetid targetrow curview numcommits
 985
 986    set v $curview
 987    set a $varcid($v,$p)
 988    set i [lsearch -exact $varccommits($v,$a) $p]
 989    if {$i < 0} {
 990        puts "oops: insertfakerow can't find [shortids $p] on arc $a"
 991        return
 992    }
 993    set children($v,$id) {}
 994    set parents($v,$id) [list $p]
 995    set varcid($v,$id) $a
 996    lappend children($v,$p) $id
 997    set cmitlisted($v,$id) 1
 998    set numcommits [incr commitidx($v)]
 999    # note we deliberately don't update varcstart($v) even if $i == 0
1000    set varccommits($v,$a) [linsert $varccommits($v,$a) $i $id]
1001    modify_arc $v $a $i
1002    if {[info exists targetid]} {
1003        if {![comes_before $targetid $p]} {
1004            incr targetrow
1005        }
1006    }
1007    setcanvscroll
1008    drawvisible
1009}
1010
1011proc removefakerow {id} {
1012    global varcid varccommits parents children commitidx
1013    global varctok vtokmod cmitlisted currentid selectedline
1014    global targetid curview numcommits
1015
1016    set v $curview
1017    if {[llength $parents($v,$id)] != 1} {
1018        puts "oops: removefakerow [shortids $id] has [llength $parents($v,$id)] parents"
1019        return
1020    }
1021    set p [lindex $parents($v,$id) 0]
1022    set a $varcid($v,$id)
1023    set i [lsearch -exact $varccommits($v,$a) $id]
1024    if {$i < 0} {
1025        puts "oops: removefakerow can't find [shortids $id] on arc $a"
1026        return
1027    }
1028    unset varcid($v,$id)
1029    set varccommits($v,$a) [lreplace $varccommits($v,$a) $i $i]
1030    unset parents($v,$id)
1031    unset children($v,$id)
1032    unset cmitlisted($v,$id)
1033    set numcommits [incr commitidx($v) -1]
1034    set j [lsearch -exact $children($v,$p) $id]
1035    if {$j >= 0} {
1036        set children($v,$p) [lreplace $children($v,$p) $j $j]
1037    }
1038    modify_arc $v $a $i
1039    if {[info exist currentid] && $id eq $currentid} {
1040        unset currentid
1041        set selectedline {}
1042    }
1043    if {[info exists targetid] && $targetid eq $id} {
1044        set targetid $p
1045    }
1046    setcanvscroll
1047    drawvisible
1048}
1049
1050proc real_children {vp} {
1051    global children nullid nullid2
1052
1053    set kids {}
1054    foreach id $children($vp) {
1055        if {$id ne $nullid && $id ne $nullid2} {
1056            lappend kids $id
1057        }
1058    }
1059    return $kids
1060}
1061
1062proc first_real_child {vp} {
1063    global children nullid nullid2
1064
1065    foreach id $children($vp) {
1066        if {$id ne $nullid && $id ne $nullid2} {
1067            return $id
1068        }
1069    }
1070    return {}
1071}
1072
1073proc last_real_child {vp} {
1074    global children nullid nullid2
1075
1076    set kids $children($vp)
1077    for {set i [llength $kids]} {[incr i -1] >= 0} {} {
1078        set id [lindex $kids $i]
1079        if {$id ne $nullid && $id ne $nullid2} {
1080            return $id
1081        }
1082    }
1083    return {}
1084}
1085
1086proc vtokcmp {v a b} {
1087    global varctok varcid
1088
1089    return [string compare [lindex $varctok($v) $varcid($v,$a)] \
1090                [lindex $varctok($v) $varcid($v,$b)]]
1091}
1092
1093# This assumes that if lim is not given, the caller has checked that
1094# arc a's token is less than $vtokmod($v)
1095proc modify_arc {v a {lim {}}} {
1096    global varctok vtokmod varcmod varcrow vupptr curview vrowmod varccommits
1097
1098    if {$lim ne {}} {
1099        set c [string compare [lindex $varctok($v) $a] $vtokmod($v)]
1100        if {$c > 0} return
1101        if {$c == 0} {
1102            set r [lindex $varcrow($v) $a]
1103            if {$r ne {} && $vrowmod($v) <= $r + $lim} return
1104        }
1105    }
1106    set vtokmod($v) [lindex $varctok($v) $a]
1107    set varcmod($v) $a
1108    if {$v == $curview} {
1109        while {$a != 0 && [lindex $varcrow($v) $a] eq {}} {
1110            set a [lindex $vupptr($v) $a]
1111            set lim {}
1112        }
1113        set r 0
1114        if {$a != 0} {
1115            if {$lim eq {}} {
1116                set lim [llength $varccommits($v,$a)]
1117            }
1118            set r [expr {[lindex $varcrow($v) $a] + $lim}]
1119        }
1120        set vrowmod($v) $r
1121        undolayout $r
1122    }
1123}
1124
1125proc update_arcrows {v} {
1126    global vtokmod varcmod vrowmod varcrow commitidx currentid selectedline
1127    global varcid vrownum varcorder varcix varccommits
1128    global vupptr vdownptr vleftptr varctok
1129    global displayorder parentlist curview cached_commitrow
1130
1131    if {$vrowmod($v) == $commitidx($v)} return
1132    if {$v == $curview} {
1133        if {[llength $displayorder] > $vrowmod($v)} {
1134            set displayorder [lrange $displayorder 0 [expr {$vrowmod($v) - 1}]]
1135            set parentlist [lrange $parentlist 0 [expr {$vrowmod($v) - 1}]]
1136        }
1137        catch {unset cached_commitrow}
1138    }
1139    set narctot [expr {[llength $varctok($v)] - 1}]
1140    set a $varcmod($v)
1141    while {$a != 0 && [lindex $varcix($v) $a] eq {}} {
1142        # go up the tree until we find something that has a row number,
1143        # or we get to a seed
1144        set a [lindex $vupptr($v) $a]
1145    }
1146    if {$a == 0} {
1147        set a [lindex $vdownptr($v) 0]
1148        if {$a == 0} return
1149        set vrownum($v) {0}
1150        set varcorder($v) [list $a]
1151        lset varcix($v) $a 0
1152        lset varcrow($v) $a 0
1153        set arcn 0
1154        set row 0
1155    } else {
1156        set arcn [lindex $varcix($v) $a]
1157        if {[llength $vrownum($v)] > $arcn + 1} {
1158            set vrownum($v) [lrange $vrownum($v) 0 $arcn]
1159            set varcorder($v) [lrange $varcorder($v) 0 $arcn]
1160        }
1161        set row [lindex $varcrow($v) $a]
1162    }
1163    while {1} {
1164        set p $a
1165        incr row [llength $varccommits($v,$a)]
1166        # go down if possible
1167        set b [lindex $vdownptr($v) $a]
1168        if {$b == 0} {
1169            # if not, go left, or go up until we can go left
1170            while {$a != 0} {
1171                set b [lindex $vleftptr($v) $a]
1172                if {$b != 0} break
1173                set a [lindex $vupptr($v) $a]
1174            }
1175            if {$a == 0} break
1176        }
1177        set a $b
1178        incr arcn
1179        lappend vrownum($v) $row
1180        lappend varcorder($v) $a
1181        lset varcix($v) $a $arcn
1182        lset varcrow($v) $a $row
1183    }
1184    set vtokmod($v) [lindex $varctok($v) $p]
1185    set varcmod($v) $p
1186    set vrowmod($v) $row
1187    if {[info exists currentid]} {
1188        set selectedline [rowofcommit $currentid]
1189    }
1190}
1191
1192# Test whether view $v contains commit $id
1193proc commitinview {id v} {
1194    global varcid
1195
1196    return [info exists varcid($v,$id)]
1197}
1198
1199# Return the row number for commit $id in the current view
1200proc rowofcommit {id} {
1201    global varcid varccommits varcrow curview cached_commitrow
1202    global varctok vtokmod
1203
1204    set v $curview
1205    if {![info exists varcid($v,$id)]} {
1206        puts "oops rowofcommit no arc for [shortids $id]"
1207        return {}
1208    }
1209    set a $varcid($v,$id)
1210    if {[string compare [lindex $varctok($v) $a] $vtokmod($v)] >= 0} {
1211        update_arcrows $v
1212    }
1213    if {[info exists cached_commitrow($id)]} {
1214        return $cached_commitrow($id)
1215    }
1216    set i [lsearch -exact $varccommits($v,$a) $id]
1217    if {$i < 0} {
1218        puts "oops didn't find commit [shortids $id] in arc $a"
1219        return {}
1220    }
1221    incr i [lindex $varcrow($v) $a]
1222    set cached_commitrow($id) $i
1223    return $i
1224}
1225
1226# Returns 1 if a is on an earlier row than b, otherwise 0
1227proc comes_before {a b} {
1228    global varcid varctok curview
1229
1230    set v $curview
1231    if {$a eq $b || ![info exists varcid($v,$a)] || \
1232            ![info exists varcid($v,$b)]} {
1233        return 0
1234    }
1235    if {$varcid($v,$a) != $varcid($v,$b)} {
1236        return [expr {[string compare [lindex $varctok($v) $varcid($v,$a)] \
1237                           [lindex $varctok($v) $varcid($v,$b)]] < 0}]
1238    }
1239    return [expr {[rowofcommit $a] < [rowofcommit $b]}]
1240}
1241
1242proc bsearch {l elt} {
1243    if {[llength $l] == 0 || $elt <= [lindex $l 0]} {
1244        return 0
1245    }
1246    set lo 0
1247    set hi [llength $l]
1248    while {$hi - $lo > 1} {
1249        set mid [expr {int(($lo + $hi) / 2)}]
1250        set t [lindex $l $mid]
1251        if {$elt < $t} {
1252            set hi $mid
1253        } elseif {$elt > $t} {
1254            set lo $mid
1255        } else {
1256            return $mid
1257        }
1258    }
1259    return $lo
1260}
1261
1262# Make sure rows $start..$end-1 are valid in displayorder and parentlist
1263proc make_disporder {start end} {
1264    global vrownum curview commitidx displayorder parentlist
1265    global varccommits varcorder parents vrowmod varcrow
1266    global d_valid_start d_valid_end
1267
1268    if {$end > $vrowmod($curview)} {
1269        update_arcrows $curview
1270    }
1271    set ai [bsearch $vrownum($curview) $start]
1272    set start [lindex $vrownum($curview) $ai]
1273    set narc [llength $vrownum($curview)]
1274    for {set r $start} {$ai < $narc && $r < $end} {incr ai} {
1275        set a [lindex $varcorder($curview) $ai]
1276        set l [llength $displayorder]
1277        set al [llength $varccommits($curview,$a)]
1278        if {$l < $r + $al} {
1279            if {$l < $r} {
1280                set pad [ntimes [expr {$r - $l}] {}]
1281                set displayorder [concat $displayorder $pad]
1282                set parentlist [concat $parentlist $pad]
1283            } elseif {$l > $r} {
1284                set displayorder [lrange $displayorder 0 [expr {$r - 1}]]
1285                set parentlist [lrange $parentlist 0 [expr {$r - 1}]]
1286            }
1287            foreach id $varccommits($curview,$a) {
1288                lappend displayorder $id
1289                lappend parentlist $parents($curview,$id)
1290            }
1291        } elseif {[lindex $displayorder [expr {$r + $al - 1}]] eq {}} {
1292            set i $r
1293            foreach id $varccommits($curview,$a) {
1294                lset displayorder $i $id
1295                lset parentlist $i $parents($curview,$id)
1296                incr i
1297            }
1298        }
1299        incr r $al
1300    }
1301}
1302
1303proc commitonrow {row} {
1304    global displayorder
1305
1306    set id [lindex $displayorder $row]
1307    if {$id eq {}} {
1308        make_disporder $row [expr {$row + 1}]
1309        set id [lindex $displayorder $row]
1310    }
1311    return $id
1312}
1313
1314proc closevarcs {v} {
1315    global varctok varccommits varcid parents children
1316    global cmitlisted commitidx vtokmod
1317
1318    set missing_parents 0
1319    set scripts {}
1320    set narcs [llength $varctok($v)]
1321    for {set a 1} {$a < $narcs} {incr a} {
1322        set id [lindex $varccommits($v,$a) end]
1323        foreach p $parents($v,$id) {
1324            if {[info exists varcid($v,$p)]} continue
1325            # add p as a new commit
1326            incr missing_parents
1327            set cmitlisted($v,$p) 0
1328            set parents($v,$p) {}
1329            if {[llength $children($v,$p)] == 1 &&
1330                [llength $parents($v,$id)] == 1} {
1331                set b $a
1332            } else {
1333                set b [newvarc $v $p]
1334            }
1335            set varcid($v,$p) $b
1336            if {[string compare [lindex $varctok($v) $b] $vtokmod($v)] < 0} {
1337                modify_arc $v $b
1338            }
1339            lappend varccommits($v,$b) $p
1340            incr commitidx($v)
1341            set scripts [check_interest $p $scripts]
1342        }
1343    }
1344    if {$missing_parents > 0} {
1345        foreach s $scripts {
1346            eval $s
1347        }
1348    }
1349}
1350
1351# Use $rwid as a substitute for $id, i.e. reparent $id's children to $rwid
1352# Assumes we already have an arc for $rwid.
1353proc rewrite_commit {v id rwid} {
1354    global children parents varcid varctok vtokmod varccommits
1355
1356    foreach ch $children($v,$id) {
1357        # make $rwid be $ch's parent in place of $id
1358        set i [lsearch -exact $parents($v,$ch) $id]
1359        if {$i < 0} {
1360            puts "oops rewrite_commit didn't find $id in parent list for $ch"
1361        }
1362        set parents($v,$ch) [lreplace $parents($v,$ch) $i $i $rwid]
1363        # add $ch to $rwid's children and sort the list if necessary
1364        if {[llength [lappend children($v,$rwid) $ch]] > 1} {
1365            set children($v,$rwid) [lsort -command [list vtokcmp $v] \
1366                                        $children($v,$rwid)]
1367        }
1368        # fix the graph after joining $id to $rwid
1369        set a $varcid($v,$ch)
1370        fix_reversal $rwid $a $v
1371        # parentlist is wrong for the last element of arc $a
1372        # even if displayorder is right, hence the 3rd arg here
1373        modify_arc $v $a [expr {[llength $varccommits($v,$a)] - 1}]
1374    }
1375}
1376
1377# Mechanism for registering a command to be executed when we come
1378# across a particular commit.  To handle the case when only the
1379# prefix of the commit is known, the commitinterest array is now
1380# indexed by the first 4 characters of the ID.  Each element is a
1381# list of id, cmd pairs.
1382proc interestedin {id cmd} {
1383    global commitinterest
1384
1385    lappend commitinterest([string range $id 0 3]) $id $cmd
1386}
1387
1388proc check_interest {id scripts} {
1389    global commitinterest
1390
1391    set prefix [string range $id 0 3]
1392    if {[info exists commitinterest($prefix)]} {
1393        set newlist {}
1394        foreach {i script} $commitinterest($prefix) {
1395            if {[string match "$i*" $id]} {
1396                lappend scripts [string map [list "%I" $id "%P" $i] $script]
1397            } else {
1398                lappend newlist $i $script
1399            }
1400        }
1401        if {$newlist ne {}} {
1402            set commitinterest($prefix) $newlist
1403        } else {
1404            unset commitinterest($prefix)
1405        }
1406    }
1407    return $scripts
1408}
1409
1410proc getcommitlines {fd inst view updating}  {
1411    global cmitlisted leftover
1412    global commitidx commitdata vdatemode
1413    global parents children curview hlview
1414    global idpending ordertok
1415    global varccommits varcid varctok vtokmod vfilelimit vshortids
1416
1417    set stuff [read $fd 500000]
1418    # git log doesn't terminate the last commit with a null...
1419    if {$stuff == {} && $leftover($inst) ne {} && [eof $fd]} {
1420        set stuff "\0"
1421    }
1422    if {$stuff == {}} {
1423        if {![eof $fd]} {
1424            return 1
1425        }
1426        global commfd viewcomplete viewactive viewname
1427        global viewinstances
1428        unset commfd($inst)
1429        set i [lsearch -exact $viewinstances($view) $inst]
1430        if {$i >= 0} {
1431            set viewinstances($view) [lreplace $viewinstances($view) $i $i]
1432        }
1433        # set it blocking so we wait for the process to terminate
1434        fconfigure $fd -blocking 1
1435        if {[catch {close $fd} err]} {
1436            set fv {}
1437            if {$view != $curview} {
1438                set fv " for the \"$viewname($view)\" view"
1439            }
1440            if {[string range $err 0 4] == "usage"} {
1441                set err "Gitk: error reading commits$fv:\
1442                        bad arguments to git log."
1443                if {$viewname($view) eq "Command line"} {
1444                    append err \
1445                        "  (Note: arguments to gitk are passed to git log\
1446                         to allow selection of commits to be displayed.)"
1447                }
1448            } else {
1449                set err "Error reading commits$fv: $err"
1450            }
1451            error_popup $err
1452        }
1453        if {[incr viewactive($view) -1] <= 0} {
1454            set viewcomplete($view) 1
1455            # Check if we have seen any ids listed as parents that haven't
1456            # appeared in the list
1457            closevarcs $view
1458            notbusy $view
1459        }
1460        if {$view == $curview} {
1461            run chewcommits
1462        }
1463        return 0
1464    }
1465    set start 0
1466    set gotsome 0
1467    set scripts {}
1468    while 1 {
1469        set i [string first "\0" $stuff $start]
1470        if {$i < 0} {
1471            append leftover($inst) [string range $stuff $start end]
1472            break
1473        }
1474        if {$start == 0} {
1475            set cmit $leftover($inst)
1476            append cmit [string range $stuff 0 [expr {$i - 1}]]
1477            set leftover($inst) {}
1478        } else {
1479            set cmit [string range $stuff $start [expr {$i - 1}]]
1480        }
1481        set start [expr {$i + 1}]
1482        set j [string first "\n" $cmit]
1483        set ok 0
1484        set listed 1
1485        if {$j >= 0 && [string match "commit *" $cmit]} {
1486            set ids [string range $cmit 7 [expr {$j - 1}]]
1487            if {[string match {[-^<>]*} $ids]} {
1488                switch -- [string index $ids 0] {
1489                    "-" {set listed 0}
1490                    "^" {set listed 2}
1491                    "<" {set listed 3}
1492                    ">" {set listed 4}
1493                }
1494                set ids [string range $ids 1 end]
1495            }
1496            set ok 1
1497            foreach id $ids {
1498                if {[string length $id] != 40} {
1499                    set ok 0
1500                    break
1501                }
1502            }
1503        }
1504        if {!$ok} {
1505            set shortcmit $cmit
1506            if {[string length $shortcmit] > 80} {
1507                set shortcmit "[string range $shortcmit 0 80]..."
1508            }
1509            error_popup "[mc "Can't parse git log output:"] {$shortcmit}"
1510            exit 1
1511        }
1512        set id [lindex $ids 0]
1513        set vid $view,$id
1514
1515        lappend vshortids($view,[string range $id 0 3]) $id
1516
1517        if {!$listed && $updating && ![info exists varcid($vid)] &&
1518            $vfilelimit($view) ne {}} {
1519            # git log doesn't rewrite parents for unlisted commits
1520            # when doing path limiting, so work around that here
1521            # by working out the rewritten parent with git rev-list
1522            # and if we already know about it, using the rewritten
1523            # parent as a substitute parent for $id's children.
1524            if {![catch {
1525                set rwid [exec git rev-list --first-parent --max-count=1 \
1526                              $id -- $vfilelimit($view)]
1527            }]} {
1528                if {$rwid ne {} && [info exists varcid($view,$rwid)]} {
1529                    # use $rwid in place of $id
1530                    rewrite_commit $view $id $rwid
1531                    continue
1532                }
1533            }
1534        }
1535
1536        set a 0
1537        if {[info exists varcid($vid)]} {
1538            if {$cmitlisted($vid) || !$listed} continue
1539            set a $varcid($vid)
1540        }
1541        if {$listed} {
1542            set olds [lrange $ids 1 end]
1543        } else {
1544            set olds {}
1545        }
1546        set commitdata($id) [string range $cmit [expr {$j + 1}] end]
1547        set cmitlisted($vid) $listed
1548        set parents($vid) $olds
1549        if {![info exists children($vid)]} {
1550            set children($vid) {}
1551        } elseif {$a == 0 && [llength $children($vid)] == 1} {
1552            set k [lindex $children($vid) 0]
1553            if {[llength $parents($view,$k)] == 1 &&
1554                (!$vdatemode($view) ||
1555                 $varcid($view,$k) == [llength $varctok($view)] - 1)} {
1556                set a $varcid($view,$k)
1557            }
1558        }
1559        if {$a == 0} {
1560            # new arc
1561            set a [newvarc $view $id]
1562        }
1563        if {[string compare [lindex $varctok($view) $a] $vtokmod($view)] < 0} {
1564            modify_arc $view $a
1565        }
1566        if {![info exists varcid($vid)]} {
1567            set varcid($vid) $a
1568            lappend varccommits($view,$a) $id
1569            incr commitidx($view)
1570        }
1571
1572        set i 0
1573        foreach p $olds {
1574            if {$i == 0 || [lsearch -exact $olds $p] >= $i} {
1575                set vp $view,$p
1576                if {[llength [lappend children($vp) $id]] > 1 &&
1577                    [vtokcmp $view [lindex $children($vp) end-1] $id] > 0} {
1578                    set children($vp) [lsort -command [list vtokcmp $view] \
1579                                           $children($vp)]
1580                    catch {unset ordertok}
1581                }
1582                if {[info exists varcid($view,$p)]} {
1583                    fix_reversal $p $a $view
1584                }
1585            }
1586            incr i
1587        }
1588
1589        set scripts [check_interest $id $scripts]
1590        set gotsome 1
1591    }
1592    if {$gotsome} {
1593        global numcommits hlview
1594
1595        if {$view == $curview} {
1596            set numcommits $commitidx($view)
1597            run chewcommits
1598        }
1599        if {[info exists hlview] && $view == $hlview} {
1600            # we never actually get here...
1601            run vhighlightmore
1602        }
1603        foreach s $scripts {
1604            eval $s
1605        }
1606    }
1607    return 2
1608}
1609
1610proc chewcommits {} {
1611    global curview hlview viewcomplete
1612    global pending_select
1613
1614    layoutmore
1615    if {$viewcomplete($curview)} {
1616        global commitidx varctok
1617        global numcommits startmsecs
1618
1619        if {[info exists pending_select]} {
1620            update
1621            reset_pending_select {}
1622
1623            if {[commitinview $pending_select $curview]} {
1624                selectline [rowofcommit $pending_select] 1
1625            } else {
1626                set row [first_real_row]
1627                selectline $row 1
1628            }
1629        }
1630        if {$commitidx($curview) > 0} {
1631            #set ms [expr {[clock clicks -milliseconds] - $startmsecs}]
1632            #puts "overall $ms ms for $numcommits commits"
1633            #puts "[llength $varctok($view)] arcs, $commitidx($view) commits"
1634        } else {
1635            show_status [mc "No commits selected"]
1636        }
1637        notbusy layout
1638    }
1639    return 0
1640}
1641
1642proc do_readcommit {id} {
1643    global tclencoding
1644
1645    # Invoke git-log to handle automatic encoding conversion
1646    set fd [open [concat | git log --no-color --pretty=raw -1 $id] r]
1647    # Read the results using i18n.logoutputencoding
1648    fconfigure $fd -translation lf -eofchar {}
1649    if {$tclencoding != {}} {
1650        fconfigure $fd -encoding $tclencoding
1651    }
1652    set contents [read $fd]
1653    close $fd
1654    # Remove the heading line
1655    regsub {^commit [0-9a-f]+\n} $contents {} contents
1656
1657    return $contents
1658}
1659
1660proc readcommit {id} {
1661    if {[catch {set contents [do_readcommit $id]}]} return
1662    parsecommit $id $contents 1
1663}
1664
1665proc parsecommit {id contents listed} {
1666    global commitinfo
1667
1668    set inhdr 1
1669    set comment {}
1670    set headline {}
1671    set auname {}
1672    set audate {}
1673    set comname {}
1674    set comdate {}
1675    set hdrend [string first "\n\n" $contents]
1676    if {$hdrend < 0} {
1677        # should never happen...
1678        set hdrend [string length $contents]
1679    }
1680    set header [string range $contents 0 [expr {$hdrend - 1}]]
1681    set comment [string range $contents [expr {$hdrend + 2}] end]
1682    foreach line [split $header "\n"] {
1683        set line [split $line " "]
1684        set tag [lindex $line 0]
1685        if {$tag == "author"} {
1686            set audate [lrange $line end-1 end]
1687            set auname [join [lrange $line 1 end-2] " "]
1688        } elseif {$tag == "committer"} {
1689            set comdate [lrange $line end-1 end]
1690            set comname [join [lrange $line 1 end-2] " "]
1691        }
1692    }
1693    set headline {}
1694    # take the first non-blank line of the comment as the headline
1695    set headline [string trimleft $comment]
1696    set i [string first "\n" $headline]
1697    if {$i >= 0} {
1698        set headline [string range $headline 0 $i]
1699    }
1700    set headline [string trimright $headline]
1701    set i [string first "\r" $headline]
1702    if {$i >= 0} {
1703        set headline [string trimright [string range $headline 0 $i]]
1704    }
1705    if {!$listed} {
1706        # git log indents the comment by 4 spaces;
1707        # if we got this via git cat-file, add the indentation
1708        set newcomment {}
1709        foreach line [split $comment "\n"] {
1710            append newcomment "    "
1711            append newcomment $line
1712            append newcomment "\n"
1713        }
1714        set comment $newcomment
1715    }
1716    set hasnote [string first "\nNotes:\n" $contents]
1717    set diff ""
1718    # If there is diff output shown in the git-log stream, split it
1719    # out.  But get rid of the empty line that always precedes the
1720    # diff.
1721    set i [string first "\n\ndiff" $comment]
1722    if {$i >= 0} {
1723        set diff [string range $comment $i+1 end]
1724        set comment [string range $comment 0 $i-1]
1725    }
1726    set commitinfo($id) [list $headline $auname $audate \
1727                             $comname $comdate $comment $hasnote $diff]
1728}
1729
1730proc getcommit {id} {
1731    global commitdata commitinfo
1732
1733    if {[info exists commitdata($id)]} {
1734        parsecommit $id $commitdata($id) 1
1735    } else {
1736        readcommit $id
1737        if {![info exists commitinfo($id)]} {
1738            set commitinfo($id) [list [mc "No commit information available"]]
1739        }
1740    }
1741    return 1
1742}
1743
1744# Expand an abbreviated commit ID to a list of full 40-char IDs that match
1745# and are present in the current view.
1746# This is fairly slow...
1747proc longid {prefix} {
1748    global varcid curview vshortids
1749
1750    set ids {}
1751    if {[string length $prefix] >= 4} {
1752        set vshortid $curview,[string range $prefix 0 3]
1753        if {[info exists vshortids($vshortid)]} {
1754            foreach id $vshortids($vshortid) {
1755                if {[string match "$prefix*" $id]} {
1756                    if {[lsearch -exact $ids $id] < 0} {
1757                        lappend ids $id
1758                        if {[llength $ids] >= 2} break
1759                    }
1760                }
1761            }
1762        }
1763    } else {
1764        foreach match [array names varcid "$curview,$prefix*"] {
1765            lappend ids [lindex [split $match ","] 1]
1766            if {[llength $ids] >= 2} break
1767        }
1768    }
1769    return $ids
1770}
1771
1772proc readrefs {} {
1773    global tagids idtags headids idheads tagobjid
1774    global otherrefids idotherrefs mainhead mainheadid
1775    global selecthead selectheadid
1776    global hideremotes
1777
1778    foreach v {tagids idtags headids idheads otherrefids idotherrefs} {
1779        catch {unset $v}
1780    }
1781    set refd [open [list | git show-ref -d] r]
1782    while {[gets $refd line] >= 0} {
1783        if {[string index $line 40] ne " "} continue
1784        set id [string range $line 0 39]
1785        set ref [string range $line 41 end]
1786        if {![string match "refs/*" $ref]} continue
1787        set name [string range $ref 5 end]
1788        if {[string match "remotes/*" $name]} {
1789            if {![string match "*/HEAD" $name] && !$hideremotes} {
1790                set headids($name) $id
1791                lappend idheads($id) $name
1792            }
1793        } elseif {[string match "heads/*" $name]} {
1794            set name [string range $name 6 end]
1795            set headids($name) $id
1796            lappend idheads($id) $name
1797        } elseif {[string match "tags/*" $name]} {
1798            # this lets refs/tags/foo^{} overwrite refs/tags/foo,
1799            # which is what we want since the former is the commit ID
1800            set name [string range $name 5 end]
1801            if {[string match "*^{}" $name]} {
1802                set name [string range $name 0 end-3]
1803            } else {
1804                set tagobjid($name) $id
1805            }
1806            set tagids($name) $id
1807            lappend idtags($id) $name
1808        } else {
1809            set otherrefids($name) $id
1810            lappend idotherrefs($id) $name
1811        }
1812    }
1813    catch {close $refd}
1814    set mainhead {}
1815    set mainheadid {}
1816    catch {
1817        set mainheadid [exec git rev-parse HEAD]
1818        set thehead [exec git symbolic-ref HEAD]
1819        if {[string match "refs/heads/*" $thehead]} {
1820            set mainhead [string range $thehead 11 end]
1821        }
1822    }
1823    set selectheadid {}
1824    if {$selecthead ne {}} {
1825        catch {
1826            set selectheadid [exec git rev-parse --verify $selecthead]
1827        }
1828    }
1829}
1830
1831# skip over fake commits
1832proc first_real_row {} {
1833    global nullid nullid2 numcommits
1834
1835    for {set row 0} {$row < $numcommits} {incr row} {
1836        set id [commitonrow $row]
1837        if {$id ne $nullid && $id ne $nullid2} {
1838            break
1839        }
1840    }
1841    return $row
1842}
1843
1844# update things for a head moved to a child of its previous location
1845proc movehead {id name} {
1846    global headids idheads
1847
1848    removehead $headids($name) $name
1849    set headids($name) $id
1850    lappend idheads($id) $name
1851}
1852
1853# update things when a head has been removed
1854proc removehead {id name} {
1855    global headids idheads
1856
1857    if {$idheads($id) eq $name} {
1858        unset idheads($id)
1859    } else {
1860        set i [lsearch -exact $idheads($id) $name]
1861        if {$i >= 0} {
1862            set idheads($id) [lreplace $idheads($id) $i $i]
1863        }
1864    }
1865    unset headids($name)
1866}
1867
1868proc ttk_toplevel {w args} {
1869    global use_ttk
1870    eval [linsert $args 0 ::toplevel $w]
1871    if {$use_ttk} {
1872        place [ttk::frame $w._toplevel_background] -x 0 -y 0 -relwidth 1 -relheight 1
1873    }
1874    return $w
1875}
1876
1877proc make_transient {window origin} {
1878    global have_tk85
1879
1880    # In MacOS Tk 8.4 transient appears to work by setting
1881    # overrideredirect, which is utterly useless, since the
1882    # windows get no border, and are not even kept above
1883    # the parent.
1884    if {!$have_tk85 && [tk windowingsystem] eq {aqua}} return
1885
1886    wm transient $window $origin
1887
1888    # Windows fails to place transient windows normally, so
1889    # schedule a callback to center them on the parent.
1890    if {[tk windowingsystem] eq {win32}} {
1891        after idle [list tk::PlaceWindow $window widget $origin]
1892    }
1893}
1894
1895proc show_error {w top msg {mc mc}} {
1896    global NS
1897    if {![info exists NS]} {set NS ""}
1898    if {[wm state $top] eq "withdrawn"} { wm deiconify $top }
1899    message $w.m -text $msg -justify center -aspect 400
1900    pack $w.m -side top -fill x -padx 20 -pady 20
1901    ${NS}::button $w.ok -default active -text [$mc OK] -command "destroy $top"
1902    pack $w.ok -side bottom -fill x
1903    bind $top <Visibility> "grab $top; focus $top"
1904    bind $top <Key-Return> "destroy $top"
1905    bind $top <Key-space>  "destroy $top"
1906    bind $top <Key-Escape> "destroy $top"
1907    tkwait window $top
1908}
1909
1910proc error_popup {msg {owner .}} {
1911    if {[tk windowingsystem] eq "win32"} {
1912        tk_messageBox -icon error -type ok -title [wm title .] \
1913            -parent $owner -message $msg
1914    } else {
1915        set w .error
1916        ttk_toplevel $w
1917        make_transient $w $owner
1918        show_error $w $w $msg
1919    }
1920}
1921
1922proc confirm_popup {msg {owner .}} {
1923    global confirm_ok NS
1924    set confirm_ok 0
1925    set w .confirm
1926    ttk_toplevel $w
1927    make_transient $w $owner
1928    message $w.m -text $msg -justify center -aspect 400
1929    pack $w.m -side top -fill x -padx 20 -pady 20
1930    ${NS}::button $w.ok -text [mc OK] -command "set confirm_ok 1; destroy $w"
1931    pack $w.ok -side left -fill x
1932    ${NS}::button $w.cancel -text [mc Cancel] -command "destroy $w"
1933    pack $w.cancel -side right -fill x
1934    bind $w <Visibility> "grab $w; focus $w"
1935    bind $w <Key-Return> "set confirm_ok 1; destroy $w"
1936    bind $w <Key-space>  "set confirm_ok 1; destroy $w"
1937    bind $w <Key-Escape> "destroy $w"
1938    tk::PlaceWindow $w widget $owner
1939    tkwait window $w
1940    return $confirm_ok
1941}
1942
1943proc setoptions {} {
1944    if {[tk windowingsystem] ne "win32"} {
1945        option add *Panedwindow.showHandle 1 startupFile
1946        option add *Panedwindow.sashRelief raised startupFile
1947        if {[tk windowingsystem] ne "aqua"} {
1948            option add *Menu.font uifont startupFile
1949        }
1950    } else {
1951        option add *Menu.TearOff 0 startupFile
1952    }
1953    option add *Button.font uifont startupFile
1954    option add *Checkbutton.font uifont startupFile
1955    option add *Radiobutton.font uifont startupFile
1956    option add *Menubutton.font uifont startupFile
1957    option add *Label.font uifont startupFile
1958    option add *Message.font uifont startupFile
1959    option add *Entry.font textfont startupFile
1960    option add *Text.font textfont startupFile
1961    option add *Labelframe.font uifont startupFile
1962    option add *Spinbox.font textfont startupFile
1963    option add *Listbox.font mainfont startupFile
1964}
1965
1966# Make a menu and submenus.
1967# m is the window name for the menu, items is the list of menu items to add.
1968# Each item is a list {mc label type description options...}
1969# mc is ignored; it's so we can put mc there to alert xgettext
1970# label is the string that appears in the menu
1971# type is cascade, command or radiobutton (should add checkbutton)
1972# description depends on type; it's the sublist for cascade, the
1973# command to invoke for command, or {variable value} for radiobutton
1974proc makemenu {m items} {
1975    menu $m
1976    if {[tk windowingsystem] eq {aqua}} {
1977        set Meta1 Cmd
1978    } else {
1979        set Meta1 Ctrl
1980    }
1981    foreach i $items {
1982        set name [mc [lindex $i 1]]
1983        set type [lindex $i 2]
1984        set thing [lindex $i 3]
1985        set params [list $type]
1986        if {$name ne {}} {
1987            set u [string first "&" [string map {&& x} $name]]
1988            lappend params -label [string map {&& & & {}} $name]
1989            if {$u >= 0} {
1990                lappend params -underline $u
1991            }
1992        }
1993        switch -- $type {
1994            "cascade" {
1995                set submenu [string tolower [string map {& ""} [lindex $i 1]]]
1996                lappend params -menu $m.$submenu
1997            }
1998            "command" {
1999                lappend params -command $thing
2000            }
2001            "radiobutton" {
2002                lappend params -variable [lindex $thing 0] \
2003                    -value [lindex $thing 1]
2004            }
2005        }
2006        set tail [lrange $i 4 end]
2007        regsub -all {\yMeta1\y} $tail $Meta1 tail
2008        eval $m add $params $tail
2009        if {$type eq "cascade"} {
2010            makemenu $m.$submenu $thing
2011        }
2012    }
2013}
2014
2015# translate string and remove ampersands
2016proc mca {str} {
2017    return [string map {&& & & {}} [mc $str]]
2018}
2019
2020proc cleardropsel {w} {
2021    $w selection clear
2022}
2023proc makedroplist {w varname args} {
2024    global use_ttk
2025    if {$use_ttk} {
2026        set width 0
2027        foreach label $args {
2028            set cx [string length $label]
2029            if {$cx > $width} {set width $cx}
2030        }
2031        set gm [ttk::combobox $w -width $width -state readonly\
2032                    -textvariable $varname -values $args \
2033                    -exportselection false]
2034        bind $gm <<ComboboxSelected>> [list $gm selection clear]
2035    } else {
2036        set gm [eval [linsert $args 0 tk_optionMenu $w $varname]]
2037    }
2038    return $gm
2039}
2040
2041proc makewindow {} {
2042    global canv canv2 canv3 linespc charspc ctext cflist cscroll
2043    global tabstop
2044    global findtype findtypemenu findloc findstring fstring geometry
2045    global entries sha1entry sha1string sha1but
2046    global diffcontextstring diffcontext
2047    global ignorespace
2048    global maincursor textcursor curtextcursor
2049    global rowctxmenu fakerowmenu mergemax wrapcomment
2050    global highlight_files gdttype
2051    global searchstring sstring
2052    global bgcolor fgcolor bglist fglist diffcolors selectbgcolor
2053    global uifgcolor uifgdisabledcolor
2054    global filesepbgcolor filesepfgcolor
2055    global mergecolors foundbgcolor currentsearchhitbgcolor
2056    global headctxmenu progresscanv progressitem progresscoords statusw
2057    global fprogitem fprogcoord lastprogupdate progupdatepending
2058    global rprogitem rprogcoord rownumsel numcommits
2059    global have_tk85 use_ttk NS
2060    global git_version
2061    global worddiff
2062
2063    # The "mc" arguments here are purely so that xgettext
2064    # sees the following string as needing to be translated
2065    set file {
2066        mc "File" cascade {
2067            {mc "Update" command updatecommits -accelerator F5}
2068            {mc "Reload" command reloadcommits -accelerator Shift-F5}
2069            {mc "Reread references" command rereadrefs}
2070            {mc "List references" command showrefs -accelerator F2}
2071            {xx "" separator}
2072            {mc "Start git gui" command {exec git gui &}}
2073            {xx "" separator}
2074            {mc "Quit" command doquit -accelerator Meta1-Q}
2075        }}
2076    set edit {
2077        mc "Edit" cascade {
2078            {mc "Preferences" command doprefs}
2079        }}
2080    set view {
2081        mc "View" cascade {
2082            {mc "New view..." command {newview 0} -accelerator Shift-F4}
2083            {mc "Edit view..." command editview -state disabled -accelerator F4}
2084            {mc "Delete view" command delview -state disabled}
2085            {xx "" separator}
2086            {mc "All files" radiobutton {selectedview 0} -command {showview 0}}
2087        }}
2088    if {[tk windowingsystem] ne "aqua"} {
2089        set help {
2090        mc "Help" cascade {
2091            {mc "About gitk" command about}
2092            {mc "Key bindings" command keys}
2093        }}
2094        set bar [list $file $edit $view $help]
2095    } else {
2096        proc ::tk::mac::ShowPreferences {} {doprefs}
2097        proc ::tk::mac::Quit {} {doquit}
2098        lset file end [lreplace [lindex $file end] end-1 end]
2099        set apple {
2100        xx "Apple" cascade {
2101            {mc "About gitk" command about}
2102            {xx "" separator}
2103        }}
2104        set help {
2105        mc "Help" cascade {
2106            {mc "Key bindings" command keys}
2107        }}
2108        set bar [list $apple $file $view $help]
2109    }
2110    makemenu .bar $bar
2111    . configure -menu .bar
2112
2113    if {$use_ttk} {
2114        # cover the non-themed toplevel with a themed frame.
2115        place [ttk::frame ._main_background] -x 0 -y 0 -relwidth 1 -relheight 1
2116    }
2117
2118    # the gui has upper and lower half, parts of a paned window.
2119    ${NS}::panedwindow .ctop -orient vertical
2120
2121    # possibly use assumed geometry
2122    if {![info exists geometry(pwsash0)]} {
2123        set geometry(topheight) [expr {15 * $linespc}]
2124        set geometry(topwidth) [expr {80 * $charspc}]
2125        set geometry(botheight) [expr {15 * $linespc}]
2126        set geometry(botwidth) [expr {50 * $charspc}]
2127        set geometry(pwsash0) [list [expr {40 * $charspc}] 2]
2128        set geometry(pwsash1) [list [expr {60 * $charspc}] 2]
2129    }
2130
2131    # the upper half will have a paned window, a scroll bar to the right, and some stuff below
2132    ${NS}::frame .tf -height $geometry(topheight) -width $geometry(topwidth)
2133    ${NS}::frame .tf.histframe
2134    ${NS}::panedwindow .tf.histframe.pwclist -orient horizontal
2135    if {!$use_ttk} {
2136        .tf.histframe.pwclist configure -sashpad 0 -handlesize 4
2137    }
2138
2139    # create three canvases
2140    set cscroll .tf.histframe.csb
2141    set canv .tf.histframe.pwclist.canv
2142    canvas $canv \
2143        -selectbackground $selectbgcolor \
2144        -background $bgcolor -bd 0 \
2145        -yscrollincr $linespc -yscrollcommand "scrollcanv $cscroll"
2146    .tf.histframe.pwclist add $canv
2147    set canv2 .tf.histframe.pwclist.canv2
2148    canvas $canv2 \
2149        -selectbackground $selectbgcolor \
2150        -background $bgcolor -bd 0 -yscrollincr $linespc
2151    .tf.histframe.pwclist add $canv2
2152    set canv3 .tf.histframe.pwclist.canv3
2153    canvas $canv3 \
2154        -selectbackground $selectbgcolor \
2155        -background $bgcolor -bd 0 -yscrollincr $linespc
2156    .tf.histframe.pwclist add $canv3
2157    if {$use_ttk} {
2158        bind .tf.histframe.pwclist <Map> {
2159            bind %W <Map> {}
2160            .tf.histframe.pwclist sashpos 1 [lindex $::geometry(pwsash1) 0]
2161            .tf.histframe.pwclist sashpos 0 [lindex $::geometry(pwsash0) 0]
2162        }
2163    } else {
2164        eval .tf.histframe.pwclist sash place 0 $geometry(pwsash0)
2165        eval .tf.histframe.pwclist sash place 1 $geometry(pwsash1)
2166    }
2167
2168    # a scroll bar to rule them
2169    ${NS}::scrollbar $cscroll -command {allcanvs yview}
2170    if {!$use_ttk} {$cscroll configure -highlightthickness 0}
2171    pack $cscroll -side right -fill y
2172    bind .tf.histframe.pwclist <Configure> {resizeclistpanes %W %w}
2173    lappend bglist $canv $canv2 $canv3
2174    pack .tf.histframe.pwclist -fill both -expand 1 -side left
2175
2176    # we have two button bars at bottom of top frame. Bar 1
2177    ${NS}::frame .tf.bar
2178    ${NS}::frame .tf.lbar -height 15
2179
2180    set sha1entry .tf.bar.sha1
2181    set entries $sha1entry
2182    set sha1but .tf.bar.sha1label
2183    button $sha1but -text "[mc "SHA1 ID:"] " -state disabled -relief flat \
2184        -command gotocommit -width 8
2185    $sha1but conf -disabledforeground [$sha1but cget -foreground]
2186    pack .tf.bar.sha1label -side left
2187    ${NS}::entry $sha1entry -width 40 -font textfont -textvariable sha1string
2188    trace add variable sha1string write sha1change
2189    pack $sha1entry -side left -pady 2
2190
2191    set bm_left_data {
2192        #define left_width 16
2193        #define left_height 16
2194        static unsigned char left_bits[] = {
2195        0x00, 0x00, 0xc0, 0x01, 0xe0, 0x00, 0x70, 0x00, 0x38, 0x00, 0x1c, 0x00,
2196        0x0e, 0x00, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x0e, 0x00, 0x1c, 0x00,
2197        0x38, 0x00, 0x70, 0x00, 0xe0, 0x00, 0xc0, 0x01};
2198    }
2199    set bm_right_data {
2200        #define right_width 16
2201        #define right_height 16
2202        static unsigned char right_bits[] = {
2203        0x00, 0x00, 0xc0, 0x01, 0x80, 0x03, 0x00, 0x07, 0x00, 0x0e, 0x00, 0x1c,
2204        0x00, 0x38, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x00, 0x38, 0x00, 0x1c,
2205        0x00, 0x0e, 0x00, 0x07, 0x80, 0x03, 0xc0, 0x01};
2206    }
2207    image create bitmap bm-left -data $bm_left_data -foreground $uifgcolor
2208    image create bitmap bm-left-gray -data $bm_left_data -foreground $uifgdisabledcolor
2209    image create bitmap bm-right -data $bm_right_data -foreground $uifgcolor
2210    image create bitmap bm-right-gray -data $bm_right_data -foreground $uifgdisabledcolor
2211
2212    ${NS}::button .tf.bar.leftbut -command goback -state disabled -width 26
2213    if {$use_ttk} {
2214        .tf.bar.leftbut configure -image [list bm-left disabled bm-left-gray]
2215    } else {
2216        .tf.bar.leftbut configure -image bm-left
2217    }
2218    pack .tf.bar.leftbut -side left -fill y
2219    ${NS}::button .tf.bar.rightbut -command goforw -state disabled -width 26
2220    if {$use_ttk} {
2221        .tf.bar.rightbut configure -image [list bm-right disabled bm-right-gray]
2222    } else {
2223        .tf.bar.rightbut configure -image bm-right
2224    }
2225    pack .tf.bar.rightbut -side left -fill y
2226
2227    ${NS}::label .tf.bar.rowlabel -text [mc "Row"]
2228    set rownumsel {}
2229    ${NS}::label .tf.bar.rownum -width 7 -textvariable rownumsel \
2230        -relief sunken -anchor e
2231    ${NS}::label .tf.bar.rowlabel2 -text "/"
2232    ${NS}::label .tf.bar.numcommits -width 7 -textvariable numcommits \
2233        -relief sunken -anchor e
2234    pack .tf.bar.rowlabel .tf.bar.rownum .tf.bar.rowlabel2 .tf.bar.numcommits \
2235        -side left
2236    if {!$use_ttk} {
2237        foreach w {rownum numcommits} {.tf.bar.$w configure -font textfont}
2238    }
2239    global selectedline
2240    trace add variable selectedline write selectedline_change
2241
2242    # Status label and progress bar
2243    set statusw .tf.bar.status
2244    ${NS}::label $statusw -width 15 -relief sunken
2245    pack $statusw -side left -padx 5
2246    if {$use_ttk} {
2247        set progresscanv [ttk::progressbar .tf.bar.progress]
2248    } else {
2249        set h [expr {[font metrics uifont -linespace] + 2}]
2250        set progresscanv .tf.bar.progress
2251        canvas $progresscanv -relief sunken -height $h -borderwidth 2
2252        set progressitem [$progresscanv create rect -1 0 0 $h -fill green]
2253        set fprogitem [$progresscanv create rect -1 0 0 $h -fill yellow]
2254        set rprogitem [$progresscanv create rect -1 0 0 $h -fill red]
2255    }
2256    pack $progresscanv -side right -expand 1 -fill x -padx {0 2}
2257    set progresscoords {0 0}
2258    set fprogcoord 0
2259    set rprogcoord 0
2260    bind $progresscanv <Configure> adjustprogress
2261    set lastprogupdate [clock clicks -milliseconds]
2262    set progupdatepending 0
2263
2264    # build up the bottom bar of upper window
2265    ${NS}::label .tf.lbar.flabel -text "[mc "Find"] "
2266
2267    set bm_down_data {
2268        #define down_width 16
2269        #define down_height 16
2270        static unsigned char down_bits[] = {
2271        0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01,
2272        0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01,
2273        0x87, 0xe1, 0x8e, 0x71, 0x9c, 0x39, 0xb8, 0x1d,
2274        0xf0, 0x0f, 0xe0, 0x07, 0xc0, 0x03, 0x80, 0x01};
2275    }
2276    image create bitmap bm-down -data $bm_down_data -foreground $uifgcolor
2277    ${NS}::button .tf.lbar.fnext -width 26 -command {dofind 1 1}
2278    .tf.lbar.fnext configure -image bm-down
2279
2280    set bm_up_data {
2281        #define up_width 16
2282        #define up_height 16
2283        static unsigned char up_bits[] = {
2284        0x80, 0x01, 0xc0, 0x03, 0xe0, 0x07, 0xf0, 0x0f,
2285        0xb8, 0x1d, 0x9c, 0x39, 0x8e, 0x71, 0x87, 0xe1,
2286        0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01,
2287        0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01};
2288    }
2289    image create bitmap bm-up -data $bm_up_data -foreground $uifgcolor
2290    ${NS}::button .tf.lbar.fprev -width 26 -command {dofind -1 1}
2291    .tf.lbar.fprev configure -image bm-up
2292
2293    ${NS}::label .tf.lbar.flab2 -text " [mc "commit"] "
2294
2295    pack .tf.lbar.flabel .tf.lbar.fnext .tf.lbar.fprev .tf.lbar.flab2 \
2296        -side left -fill y
2297    set gdttype [mc "containing:"]
2298    set gm [makedroplist .tf.lbar.gdttype gdttype \
2299                [mc "containing:"] \
2300                [mc "touching paths:"] \
2301                [mc "adding/removing string:"] \
2302                [mc "changing lines matching:"]]
2303    trace add variable gdttype write gdttype_change
2304    pack .tf.lbar.gdttype -side left -fill y
2305
2306    set findstring {}
2307    set fstring .tf.lbar.findstring
2308    lappend entries $fstring
2309    ${NS}::entry $fstring -width 30 -textvariable findstring
2310    trace add variable findstring write find_change
2311    set findtype [mc "Exact"]
2312    set findtypemenu [makedroplist .tf.lbar.findtype \
2313                          findtype [mc "Exact"] [mc "IgnCase"] [mc "Regexp"]]
2314    trace add variable findtype write findcom_change
2315    set findloc [mc "All fields"]
2316    makedroplist .tf.lbar.findloc findloc [mc "All fields"] [mc "Headline"] \
2317        [mc "Comments"] [mc "Author"] [mc "Committer"]
2318    trace add variable findloc write find_change
2319    pack .tf.lbar.findloc -side right
2320    pack .tf.lbar.findtype -side right
2321    pack $fstring -side left -expand 1 -fill x
2322
2323    # Finish putting the upper half of the viewer together
2324    pack .tf.lbar -in .tf -side bottom -fill x
2325    pack .tf.bar -in .tf -side bottom -fill x
2326    pack .tf.histframe -fill both -side top -expand 1
2327    .ctop add .tf
2328    if {!$use_ttk} {
2329        .ctop paneconfigure .tf -height $geometry(topheight)
2330        .ctop paneconfigure .tf -width $geometry(topwidth)
2331    }
2332
2333    # now build up the bottom
2334    ${NS}::panedwindow .pwbottom -orient horizontal
2335
2336    # lower left, a text box over search bar, scroll bar to the right
2337    # if we know window height, then that will set the lower text height, otherwise
2338    # we set lower text height which will drive window height
2339    if {[info exists geometry(main)]} {
2340        ${NS}::frame .bleft -width $geometry(botwidth)
2341    } else {
2342        ${NS}::frame .bleft -width $geometry(botwidth) -height $geometry(botheight)
2343    }
2344    ${NS}::frame .bleft.top
2345    ${NS}::frame .bleft.mid
2346    ${NS}::frame .bleft.bottom
2347
2348    ${NS}::button .bleft.top.search -text [mc "Search"] -command dosearch
2349    pack .bleft.top.search -side left -padx 5
2350    set sstring .bleft.top.sstring
2351    set searchstring ""
2352    ${NS}::entry $sstring -width 20 -textvariable searchstring
2353    lappend entries $sstring
2354    trace add variable searchstring write incrsearch
2355    pack $sstring -side left -expand 1 -fill x
2356    ${NS}::radiobutton .bleft.mid.diff -text [mc "Diff"] \
2357        -command changediffdisp -variable diffelide -value {0 0}
2358    ${NS}::radiobutton .bleft.mid.old -text [mc "Old version"] \
2359        -command changediffdisp -variable diffelide -value {0 1}
2360    ${NS}::radiobutton .bleft.mid.new -text [mc "New version"] \
2361        -command changediffdisp -variable diffelide -value {1 0}
2362    ${NS}::label .bleft.mid.labeldiffcontext -text "      [mc "Lines of context"]: "
2363    pack .bleft.mid.diff .bleft.mid.old .bleft.mid.new -side left
2364    spinbox .bleft.mid.diffcontext -width 5 \
2365        -from 0 -increment 1 -to 10000000 \
2366        -validate all -validatecommand "diffcontextvalidate %P" \
2367        -textvariable diffcontextstring
2368    .bleft.mid.diffcontext set $diffcontext
2369    trace add variable diffcontextstring write diffcontextchange
2370    lappend entries .bleft.mid.diffcontext
2371    pack .bleft.mid.labeldiffcontext .bleft.mid.diffcontext -side left
2372    ${NS}::checkbutton .bleft.mid.ignspace -text [mc "Ignore space change"] \
2373        -command changeignorespace -variable ignorespace
2374    pack .bleft.mid.ignspace -side left -padx 5
2375
2376    set worddiff [mc "Line diff"]
2377    if {[package vcompare $git_version "1.7.2"] >= 0} {
2378        makedroplist .bleft.mid.worddiff worddiff [mc "Line diff"] \
2379            [mc "Markup words"] [mc "Color words"]
2380        trace add variable worddiff write changeworddiff
2381        pack .bleft.mid.worddiff -side left -padx 5
2382    }
2383
2384    set ctext .bleft.bottom.ctext
2385    text $ctext -background $bgcolor -foreground $fgcolor \
2386        -state disabled -font textfont \
2387        -yscrollcommand scrolltext -wrap none \
2388        -xscrollcommand ".bleft.bottom.sbhorizontal set"
2389    if {$have_tk85} {
2390        $ctext conf -tabstyle wordprocessor
2391    }
2392    ${NS}::scrollbar .bleft.bottom.sb -command "$ctext yview"
2393    ${NS}::scrollbar .bleft.bottom.sbhorizontal -command "$ctext xview" -orient h
2394    pack .bleft.top -side top -fill x
2395    pack .bleft.mid -side top -fill x
2396    grid $ctext .bleft.bottom.sb -sticky nsew
2397    grid .bleft.bottom.sbhorizontal -sticky ew
2398    grid columnconfigure .bleft.bottom 0 -weight 1
2399    grid rowconfigure .bleft.bottom 0 -weight 1
2400    grid rowconfigure .bleft.bottom 1 -weight 0
2401    pack .bleft.bottom -side top -fill both -expand 1
2402    lappend bglist $ctext
2403    lappend fglist $ctext
2404
2405    $ctext tag conf comment -wrap $wrapcomment
2406    $ctext tag conf filesep -font textfontbold -fore $filesepfgcolor -back $filesepbgcolor
2407    $ctext tag conf hunksep -fore [lindex $diffcolors 2]
2408    $ctext tag conf d0 -fore [lindex $diffcolors 0]
2409    $ctext tag conf dresult -fore [lindex $diffcolors 1]
2410    $ctext tag conf m0 -fore [lindex $mergecolors 0]
2411    $ctext tag conf m1 -fore [lindex $mergecolors 1]
2412    $ctext tag conf m2 -fore [lindex $mergecolors 2]
2413    $ctext tag conf m3 -fore [lindex $mergecolors 3]
2414    $ctext tag conf m4 -fore [lindex $mergecolors 4]
2415    $ctext tag conf m5 -fore [lindex $mergecolors 5]
2416    $ctext tag conf m6 -fore [lindex $mergecolors 6]
2417    $ctext tag conf m7 -fore [lindex $mergecolors 7]
2418    $ctext tag conf m8 -fore [lindex $mergecolors 8]
2419    $ctext tag conf m9 -fore [lindex $mergecolors 9]
2420    $ctext tag conf m10 -fore [lindex $mergecolors 10]
2421    $ctext tag conf m11 -fore [lindex $mergecolors 11]
2422    $ctext tag conf m12 -fore [lindex $mergecolors 12]
2423    $ctext tag conf m13 -fore [lindex $mergecolors 13]
2424    $ctext tag conf m14 -fore [lindex $mergecolors 14]
2425    $ctext tag conf m15 -fore [lindex $mergecolors 15]
2426    $ctext tag conf mmax -fore darkgrey
2427    set mergemax 16
2428    $ctext tag conf mresult -font textfontbold
2429    $ctext tag conf msep -font textfontbold
2430    $ctext tag conf found -back $foundbgcolor
2431    $ctext tag conf currentsearchhit -back $currentsearchhitbgcolor
2432    $ctext tag conf wwrap -wrap word -lmargin2 1c
2433    $ctext tag conf bold -font textfontbold
2434
2435    .pwbottom add .bleft
2436    if {!$use_ttk} {
2437        .pwbottom paneconfigure .bleft -width $geometry(botwidth)
2438    }
2439
2440    # lower right
2441    ${NS}::frame .bright
2442    ${NS}::frame .bright.mode
2443    ${NS}::radiobutton .bright.mode.patch -text [mc "Patch"] \
2444        -command reselectline -variable cmitmode -value "patch"
2445    ${NS}::radiobutton .bright.mode.tree -text [mc "Tree"] \
2446        -command reselectline -variable cmitmode -value "tree"
2447    grid .bright.mode.patch .bright.mode.tree -sticky ew
2448    pack .bright.mode -side top -fill x
2449    set cflist .bright.cfiles
2450    set indent [font measure mainfont "nn"]
2451    text $cflist \
2452        -selectbackground $selectbgcolor \
2453        -background $bgcolor -foreground $fgcolor \
2454        -font mainfont \
2455        -tabs [list $indent [expr {2 * $indent}]] \
2456        -yscrollcommand ".bright.sb set" \
2457        -cursor [. cget -cursor] \
2458        -spacing1 1 -spacing3 1
2459    lappend bglist $cflist
2460    lappend fglist $cflist
2461    ${NS}::scrollbar .bright.sb -command "$cflist yview"
2462    pack .bright.sb -side right -fill y
2463    pack $cflist -side left -fill both -expand 1
2464    $cflist tag configure highlight \
2465        -background [$cflist cget -selectbackground]
2466    $cflist tag configure bold -font mainfontbold
2467
2468    .pwbottom add .bright
2469    .ctop add .pwbottom
2470
2471    # restore window width & height if known
2472    if {[info exists geometry(main)]} {
2473        if {[scan $geometry(main) "%dx%d" w h] >= 2} {
2474            if {$w > [winfo screenwidth .]} {
2475                set w [winfo screenwidth .]
2476            }
2477            if {$h > [winfo screenheight .]} {
2478                set h [winfo screenheight .]
2479            }
2480            wm geometry . "${w}x$h"
2481        }
2482    }
2483
2484    if {[info exists geometry(state)] && $geometry(state) eq "zoomed"} {
2485        wm state . $geometry(state)
2486    }
2487
2488    if {[tk windowingsystem] eq {aqua}} {
2489        set M1B M1
2490        set ::BM "3"
2491    } else {
2492        set M1B Control
2493        set ::BM "2"
2494    }
2495
2496    if {$use_ttk} {
2497        bind .ctop <Map> {
2498            bind %W <Map> {}
2499            %W sashpos 0 $::geometry(topheight)
2500        }
2501        bind .pwbottom <Map> {
2502            bind %W <Map> {}
2503            %W sashpos 0 $::geometry(botwidth)
2504        }
2505    }
2506
2507    bind .pwbottom <Configure> {resizecdetpanes %W %w}
2508    pack .ctop -fill both -expand 1
2509    bindall <1> {selcanvline %W %x %y}
2510    #bindall <B1-Motion> {selcanvline %W %x %y}
2511    if {[tk windowingsystem] == "win32"} {
2512        bind . <MouseWheel> { windows_mousewheel_redirector %W %X %Y %D }
2513        bind $ctext <MouseWheel> { windows_mousewheel_redirector %W %X %Y %D ; break }
2514    } else {
2515        bindall <ButtonRelease-4> "allcanvs yview scroll -5 units"
2516        bindall <ButtonRelease-5> "allcanvs yview scroll 5 units"
2517        if {[tk windowingsystem] eq "aqua"} {
2518            bindall <MouseWheel> {
2519                set delta [expr {- (%D)}]
2520                allcanvs yview scroll $delta units
2521            }
2522            bindall <Shift-MouseWheel> {
2523                set delta [expr {- (%D)}]
2524                $canv xview scroll $delta units
2525            }
2526        }
2527    }
2528    bindall <$::BM> "canvscan mark %W %x %y"
2529    bindall <B$::BM-Motion> "canvscan dragto %W %x %y"
2530    bind all <$M1B-Key-w> {destroy [winfo toplevel %W]}
2531    bind . <$M1B-Key-w> doquit
2532    bindkey <Home> selfirstline
2533    bindkey <End> sellastline
2534    bind . <Key-Up> "selnextline -1"
2535    bind . <Key-Down> "selnextline 1"
2536    bind . <Shift-Key-Up> "dofind -1 0"
2537    bind . <Shift-Key-Down> "dofind 1 0"
2538    bindkey <Key-Right> "goforw"
2539    bindkey <Key-Left> "goback"
2540    bind . <Key-Prior> "selnextpage -1"
2541    bind . <Key-Next> "selnextpage 1"
2542    bind . <$M1B-Home> "allcanvs yview moveto 0.0"
2543    bind . <$M1B-End> "allcanvs yview moveto 1.0"
2544    bind . <$M1B-Key-Up> "allcanvs yview scroll -1 units"
2545    bind . <$M1B-Key-Down> "allcanvs yview scroll 1 units"
2546    bind . <$M1B-Key-Prior> "allcanvs yview scroll -1 pages"
2547    bind . <$M1B-Key-Next> "allcanvs yview scroll 1 pages"
2548    bindkey <Key-Delete> "$ctext yview scroll -1 pages"
2549    bindkey <Key-BackSpace> "$ctext yview scroll -1 pages"
2550    bindkey <Key-space> "$ctext yview scroll 1 pages"
2551    bindkey p "selnextline -1"
2552    bindkey n "selnextline 1"
2553    bindkey z "goback"
2554    bindkey x "goforw"
2555    bindkey k "selnextline -1"
2556    bindkey j "selnextline 1"
2557    bindkey h "goback"
2558    bindkey l "goforw"
2559    bindkey b prevfile
2560    bindkey d "$ctext yview scroll 18 units"
2561    bindkey u "$ctext yview scroll -18 units"
2562    bindkey / {focus $fstring}
2563    bindkey <Key-KP_Divide> {focus $fstring}
2564    bindkey <Key-Return> {dofind 1 1}
2565    bindkey ? {dofind -1 1}
2566    bindkey f nextfile
2567    bind . <F5> updatecommits
2568    bindmodfunctionkey Shift 5 reloadcommits
2569    bind . <F2> showrefs
2570    bindmodfunctionkey Shift 4 {newview 0}
2571    bind . <F4> edit_or_newview
2572    bind . <$M1B-q> doquit
2573    bind . <$M1B-f> {dofind 1 1}
2574    bind . <$M1B-g> {dofind 1 0}
2575    bind . <$M1B-r> dosearchback
2576    bind . <$M1B-s> dosearch
2577    bind . <$M1B-equal> {incrfont 1}
2578    bind . <$M1B-plus> {incrfont 1}
2579    bind . <$M1B-KP_Add> {incrfont 1}
2580    bind . <$M1B-minus> {incrfont -1}
2581    bind . <$M1B-KP_Subtract> {incrfont -1}
2582    wm protocol . WM_DELETE_WINDOW doquit
2583    bind . <Destroy> {stop_backends}
2584    bind . <Button-1> "click %W"
2585    bind $fstring <Key-Return> {dofind 1 1}
2586    bind $sha1entry <Key-Return> {gotocommit; break}
2587    bind $sha1entry <<PasteSelection>> clearsha1
2588    bind $sha1entry <<Paste>> clearsha1
2589    bind $cflist <1> {sel_flist %W %x %y; break}
2590    bind $cflist <B1-Motion> {sel_flist %W %x %y; break}
2591    bind $cflist <ButtonRelease-1> {treeclick %W %x %y}
2592    global ctxbut
2593    bind $cflist $ctxbut {pop_flist_menu %W %X %Y %x %y}
2594    bind $ctext $ctxbut {pop_diff_menu %W %X %Y %x %y}
2595    bind $ctext <Button-1> {focus %W}
2596    bind $ctext <<Selection>> rehighlight_search_results
2597
2598    set maincursor [. cget -cursor]
2599    set textcursor [$ctext cget -cursor]
2600    set curtextcursor $textcursor
2601
2602    set rowctxmenu .rowctxmenu
2603    makemenu $rowctxmenu {
2604        {mc "Diff this -> selected" command {diffvssel 0}}
2605        {mc "Diff selected -> this" command {diffvssel 1}}
2606        {mc "Make patch" command mkpatch}
2607        {mc "Create tag" command mktag}
2608        {mc "Write commit to file" command writecommit}
2609        {mc "Create new branch" command mkbranch}
2610        {mc "Cherry-pick this commit" command cherrypick}
2611        {mc "Reset HEAD branch to here" command resethead}
2612        {mc "Mark this commit" command markhere}
2613        {mc "Return to mark" command gotomark}
2614        {mc "Find descendant of this and mark" command find_common_desc}
2615        {mc "Compare with marked commit" command compare_commits}
2616        {mc "Diff this -> marked commit" command {diffvsmark 0}}
2617        {mc "Diff marked commit -> this" command {diffvsmark 1}}
2618        {mc "Revert this commit" command revert}
2619    }
2620    $rowctxmenu configure -tearoff 0
2621
2622    set fakerowmenu .fakerowmenu
2623    makemenu $fakerowmenu {
2624        {mc "Diff this -> selected" command {diffvssel 0}}
2625        {mc "Diff selected -> this" command {diffvssel 1}}
2626        {mc "Make patch" command mkpatch}
2627        {mc "Diff this -> marked commit" command {diffvsmark 0}}
2628        {mc "Diff marked commit -> this" command {diffvsmark 1}}
2629    }
2630    $fakerowmenu configure -tearoff 0
2631
2632    set headctxmenu .headctxmenu
2633    makemenu $headctxmenu {
2634        {mc "Check out this branch" command cobranch}
2635        {mc "Remove this branch" command rmbranch}
2636    }
2637    $headctxmenu configure -tearoff 0
2638
2639    global flist_menu
2640    set flist_menu .flistctxmenu
2641    makemenu $flist_menu {
2642        {mc "Highlight this too" command {flist_hl 0}}
2643        {mc "Highlight this only" command {flist_hl 1}}
2644        {mc "External diff" command {external_diff}}
2645        {mc "Blame parent commit" command {external_blame 1}}
2646    }
2647    $flist_menu configure -tearoff 0
2648
2649    global diff_menu
2650    set diff_menu .diffctxmenu
2651    makemenu $diff_menu {
2652        {mc "Show origin of this line" command show_line_source}
2653        {mc "Run git gui blame on this line" command {external_blame_diff}}
2654    }
2655    $diff_menu configure -tearoff 0
2656}
2657
2658# Windows sends all mouse wheel events to the current focused window, not
2659# the one where the mouse hovers, so bind those events here and redirect
2660# to the correct window
2661proc windows_mousewheel_redirector {W X Y D} {
2662    global canv canv2 canv3
2663    set w [winfo containing -displayof $W $X $Y]
2664    if {$w ne ""} {
2665        set u [expr {$D < 0 ? 5 : -5}]
2666        if {$w == $canv || $w == $canv2 || $w == $canv3} {
2667            allcanvs yview scroll $u units
2668        } else {
2669            catch {
2670                $w yview scroll $u units
2671            }
2672        }
2673    }
2674}
2675
2676# Update row number label when selectedline changes
2677proc selectedline_change {n1 n2 op} {
2678    global selectedline rownumsel
2679
2680    if {$selectedline eq {}} {
2681        set rownumsel {}
2682    } else {
2683        set rownumsel [expr {$selectedline + 1}]
2684    }
2685}
2686
2687# mouse-2 makes all windows scan vertically, but only the one
2688# the cursor is in scans horizontally
2689proc canvscan {op w x y} {
2690    global canv canv2 canv3
2691    foreach c [list $canv $canv2 $canv3] {
2692        if {$c == $w} {
2693            $c scan $op $x $y
2694        } else {
2695            $c scan $op 0 $y
2696        }
2697    }
2698}
2699
2700proc scrollcanv {cscroll f0 f1} {
2701    $cscroll set $f0 $f1
2702    drawvisible
2703    flushhighlights
2704}
2705
2706# when we make a key binding for the toplevel, make sure
2707# it doesn't get triggered when that key is pressed in the
2708# find string entry widget.
2709proc bindkey {ev script} {
2710    global entries
2711    bind . $ev $script
2712    set escript [bind Entry $ev]
2713    if {$escript == {}} {
2714        set escript [bind Entry <Key>]
2715    }
2716    foreach e $entries {
2717        bind $e $ev "$escript; break"
2718    }
2719}
2720
2721proc bindmodfunctionkey {mod n script} {
2722    bind . <$mod-F$n> $script
2723    catch { bind . <$mod-XF86_Switch_VT_$n> $script }
2724}
2725
2726# set the focus back to the toplevel for any click outside
2727# the entry widgets
2728proc click {w} {
2729    global ctext entries
2730    foreach e [concat $entries $ctext] {
2731        if {$w == $e} return
2732    }
2733    focus .
2734}
2735
2736# Adjust the progress bar for a change in requested extent or canvas size
2737proc adjustprogress {} {
2738    global progresscanv progressitem progresscoords
2739    global fprogitem fprogcoord lastprogupdate progupdatepending
2740    global rprogitem rprogcoord use_ttk
2741
2742    if {$use_ttk} {
2743        $progresscanv configure -value [expr {int($fprogcoord * 100)}]
2744        return
2745    }
2746
2747    set w [expr {[winfo width $progresscanv] - 4}]
2748    set x0 [expr {$w * [lindex $progresscoords 0]}]
2749    set x1 [expr {$w * [lindex $progresscoords 1]}]
2750    set h [winfo height $progresscanv]
2751    $progresscanv coords $progressitem $x0 0 $x1 $h
2752    $progresscanv coords $fprogitem 0 0 [expr {$w * $fprogcoord}] $h
2753    $progresscanv coords $rprogitem 0 0 [expr {$w * $rprogcoord}] $h
2754    set now [clock clicks -milliseconds]
2755    if {$now >= $lastprogupdate + 100} {
2756        set progupdatepending 0
2757        update
2758    } elseif {!$progupdatepending} {
2759        set progupdatepending 1
2760        after [expr {$lastprogupdate + 100 - $now}] doprogupdate
2761    }
2762}
2763
2764proc doprogupdate {} {
2765    global lastprogupdate progupdatepending
2766
2767    if {$progupdatepending} {
2768        set progupdatepending 0
2769        set lastprogupdate [clock clicks -milliseconds]
2770        update
2771    }
2772}
2773
2774proc savestuff {w} {
2775    global canv canv2 canv3 mainfont textfont uifont tabstop
2776    global stuffsaved findmergefiles maxgraphpct
2777    global maxwidth showneartags showlocalchanges
2778    global viewname viewfiles viewargs viewargscmd viewperm nextviewnum
2779    global cmitmode wrapcomment datetimeformat limitdiffs
2780    global colors uicolor bgcolor fgcolor diffcolors diffcontext selectbgcolor
2781    global uifgcolor uifgdisabledcolor
2782    global headbgcolor headfgcolor headoutlinecolor remotebgcolor
2783    global tagbgcolor tagfgcolor tagoutlinecolor
2784    global reflinecolor filesepbgcolor filesepfgcolor
2785    global mergecolors foundbgcolor currentsearchhitbgcolor
2786    global linehoverbgcolor linehoverfgcolor linehoveroutlinecolor circlecolors
2787    global mainheadcirclecolor workingfilescirclecolor indexcirclecolor
2788    global linkfgcolor circleoutlinecolor
2789    global autoselect autosellen extdifftool perfile_attrs markbgcolor use_ttk
2790    global hideremotes want_ttk maxrefs
2791    global config_file config_file_tmp
2792
2793    if {$stuffsaved} return
2794    if {![winfo viewable .]} return
2795    catch {
2796        if {[file exists $config_file_tmp]} {
2797            file delete -force $config_file_tmp
2798        }
2799        set f [open $config_file_tmp w]
2800        if {$::tcl_platform(platform) eq {windows}} {
2801            file attributes $config_file_tmp -hidden true
2802        }
2803        puts $f [list set mainfont $mainfont]
2804        puts $f [list set textfont $textfont]
2805        puts $f [list set uifont $uifont]
2806        puts $f [list set tabstop $tabstop]
2807        puts $f [list set findmergefiles $findmergefiles]
2808        puts $f [list set maxgraphpct $maxgraphpct]
2809        puts $f [list set maxwidth $maxwidth]
2810        puts $f [list set cmitmode $cmitmode]
2811        puts $f [list set wrapcomment $wrapcomment]
2812        puts $f [list set autoselect $autoselect]
2813        puts $f [list set autosellen $autosellen]
2814        puts $f [list set showneartags $showneartags]
2815        puts $f [list set maxrefs $maxrefs]
2816        puts $f [list set hideremotes $hideremotes]
2817        puts $f [list set showlocalchanges $showlocalchanges]
2818        puts $f [list set datetimeformat $datetimeformat]
2819        puts $f [list set limitdiffs $limitdiffs]
2820        puts $f [list set uicolor $uicolor]
2821        puts $f [list set want_ttk $want_ttk]
2822        puts $f [list set bgcolor $bgcolor]
2823        puts $f [list set fgcolor $fgcolor]
2824        puts $f [list set uifgcolor $uifgcolor]
2825        puts $f [list set uifgdisabledcolor $uifgdisabledcolor]
2826        puts $f [list set colors $colors]
2827        puts $f [list set diffcolors $diffcolors]
2828        puts $f [list set mergecolors $mergecolors]
2829        puts $f [list set markbgcolor $markbgcolor]
2830        puts $f [list set diffcontext $diffcontext]
2831        puts $f [list set selectbgcolor $selectbgcolor]
2832        puts $f [list set foundbgcolor $foundbgcolor]
2833        puts $f [list set currentsearchhitbgcolor $currentsearchhitbgcolor]
2834        puts $f [list set extdifftool $extdifftool]
2835        puts $f [list set perfile_attrs $perfile_attrs]
2836        puts $f [list set headbgcolor $headbgcolor]
2837        puts $f [list set headfgcolor $headfgcolor]
2838        puts $f [list set headoutlinecolor $headoutlinecolor]
2839        puts $f [list set remotebgcolor $remotebgcolor]
2840        puts $f [list set tagbgcolor $tagbgcolor]
2841        puts $f [list set tagfgcolor $tagfgcolor]
2842        puts $f [list set tagoutlinecolor $tagoutlinecolor]
2843        puts $f [list set reflinecolor $reflinecolor]
2844        puts $f [list set filesepbgcolor $filesepbgcolor]
2845        puts $f [list set filesepfgcolor $filesepfgcolor]
2846        puts $f [list set linehoverbgcolor $linehoverbgcolor]
2847        puts $f [list set linehoverfgcolor $linehoverfgcolor]
2848        puts $f [list set linehoveroutlinecolor $linehoveroutlinecolor]
2849        puts $f [list set mainheadcirclecolor $mainheadcirclecolor]
2850        puts $f [list set workingfilescirclecolor $workingfilescirclecolor]
2851        puts $f [list set indexcirclecolor $indexcirclecolor]
2852        puts $f [list set circlecolors $circlecolors]
2853        puts $f [list set linkfgcolor $linkfgcolor]
2854        puts $f [list set circleoutlinecolor $circleoutlinecolor]
2855
2856        puts $f "set geometry(main) [wm geometry .]"
2857        puts $f "set geometry(state) [wm state .]"
2858        puts $f "set geometry(topwidth) [winfo width .tf]"
2859        puts $f "set geometry(topheight) [winfo height .tf]"
2860        if {$use_ttk} {
2861            puts $f "set geometry(pwsash0) \"[.tf.histframe.pwclist sashpos 0] 1\""
2862            puts $f "set geometry(pwsash1) \"[.tf.histframe.pwclist sashpos 1] 1\""
2863        } else {
2864            puts $f "set geometry(pwsash0) \"[.tf.histframe.pwclist sash coord 0]\""
2865            puts $f "set geometry(pwsash1) \"[.tf.histframe.pwclist sash coord 1]\""
2866        }
2867        puts $f "set geometry(botwidth) [winfo width .bleft]"
2868        puts $f "set geometry(botheight) [winfo height .bleft]"
2869
2870        puts -nonewline $f "set permviews {"
2871        for {set v 0} {$v < $nextviewnum} {incr v} {
2872            if {$viewperm($v)} {
2873                puts $f "{[list $viewname($v) $viewfiles($v) $viewargs($v) $viewargscmd($v)]}"
2874            }
2875        }
2876        puts $f "}"
2877        close $f
2878        file rename -force $config_file_tmp $config_file
2879    }
2880    set stuffsaved 1
2881}
2882
2883proc resizeclistpanes {win w} {
2884    global oldwidth use_ttk
2885    if {[info exists oldwidth($win)]} {
2886        if {$use_ttk} {
2887            set s0 [$win sashpos 0]
2888            set s1 [$win sashpos 1]
2889        } else {
2890            set s0 [$win sash coord 0]
2891            set s1 [$win sash coord 1]
2892        }
2893        if {$w < 60} {
2894            set sash0 [expr {int($w/2 - 2)}]
2895            set sash1 [expr {int($w*5/6 - 2)}]
2896        } else {
2897            set factor [expr {1.0 * $w / $oldwidth($win)}]
2898            set sash0 [expr {int($factor * [lindex $s0 0])}]
2899            set sash1 [expr {int($factor * [lindex $s1 0])}]
2900            if {$sash0 < 30} {
2901                set sash0 30
2902            }
2903            if {$sash1 < $sash0 + 20} {
2904                set sash1 [expr {$sash0 + 20}]
2905            }
2906            if {$sash1 > $w - 10} {
2907                set sash1 [expr {$w - 10}]
2908                if {$sash0 > $sash1 - 20} {
2909                    set sash0 [expr {$sash1 - 20}]
2910                }
2911            }
2912        }
2913        if {$use_ttk} {
2914            $win sashpos 0 $sash0
2915            $win sashpos 1 $sash1
2916        } else {
2917            $win sash place 0 $sash0 [lindex $s0 1]
2918            $win sash place 1 $sash1 [lindex $s1 1]
2919        }
2920    }
2921    set oldwidth($win) $w
2922}
2923
2924proc resizecdetpanes {win w} {
2925    global oldwidth use_ttk
2926    if {[info exists oldwidth($win)]} {
2927        if {$use_ttk} {
2928            set s0 [$win sashpos 0]
2929        } else {
2930            set s0 [$win sash coord 0]
2931        }
2932        if {$w < 60} {
2933            set sash0 [expr {int($w*3/4 - 2)}]
2934        } else {
2935            set factor [expr {1.0 * $w / $oldwidth($win)}]
2936            set sash0 [expr {int($factor * [lindex $s0 0])}]
2937            if {$sash0 < 45} {
2938                set sash0 45
2939            }
2940            if {$sash0 > $w - 15} {
2941                set sash0 [expr {$w - 15}]
2942            }
2943        }
2944        if {$use_ttk} {
2945            $win sashpos 0 $sash0
2946        } else {
2947            $win sash place 0 $sash0 [lindex $s0 1]
2948        }
2949    }
2950    set oldwidth($win) $w
2951}
2952
2953proc allcanvs args {
2954    global canv canv2 canv3
2955    eval $canv $args
2956    eval $canv2 $args
2957    eval $canv3 $args
2958}
2959
2960proc bindall {event action} {
2961    global canv canv2 canv3
2962    bind $canv $event $action
2963    bind $canv2 $event $action
2964    bind $canv3 $event $action
2965}
2966
2967proc about {} {
2968    global uifont NS
2969    set w .about
2970    if {[winfo exists $w]} {
2971        raise $w
2972        return
2973    }
2974    ttk_toplevel $w
2975    wm title $w [mc "About gitk"]
2976    make_transient $w .
2977    message $w.m -text [mc "
2978Gitk - a commit viewer for git
2979
2980Copyright \u00a9 2005-2014 Paul Mackerras
2981
2982Use and redistribute under the terms of the GNU General Public License"] \
2983            -justify center -aspect 400 -border 2 -bg white -relief groove
2984    pack $w.m -side top -fill x -padx 2 -pady 2
2985    ${NS}::button $w.ok -text [mc "Close"] -command "destroy $w" -default active
2986    pack $w.ok -side bottom
2987    bind $w <Visibility> "focus $w.ok"
2988    bind $w <Key-Escape> "destroy $w"
2989    bind $w <Key-Return> "destroy $w"
2990    tk::PlaceWindow $w widget .
2991}
2992
2993proc keys {} {
2994    global NS
2995    set w .keys
2996    if {[winfo exists $w]} {
2997        raise $w
2998        return
2999    }
3000    if {[tk windowingsystem] eq {aqua}} {
3001        set M1T Cmd
3002    } else {
3003        set M1T Ctrl
3004    }
3005    ttk_toplevel $w
3006    wm title $w [mc "Gitk key bindings"]
3007    make_transient $w .
3008    message $w.m -text "
3009[mc "Gitk key bindings:"]
3010
3011[mc "<%s-Q>             Quit" $M1T]
3012[mc "<%s-W>             Close window" $M1T]
3013[mc "<Home>             Move to first commit"]
3014[mc "<End>              Move to last commit"]
3015[mc "<Up>, p, k Move up one commit"]
3016[mc "<Down>, n, j       Move down one commit"]
3017[mc "<Left>, z, h       Go back in history list"]
3018[mc "<Right>, x, l      Go forward in history list"]
3019[mc "<PageUp>   Move up one page in commit list"]
3020[mc "<PageDown> Move down one page in commit list"]
3021[mc "<%s-Home>  Scroll to top of commit list" $M1T]
3022[mc "<%s-End>   Scroll to bottom of commit list" $M1T]
3023[mc "<%s-Up>    Scroll commit list up one line" $M1T]
3024[mc "<%s-Down>  Scroll commit list down one line" $M1T]
3025[mc "<%s-PageUp>        Scroll commit list up one page" $M1T]
3026[mc "<%s-PageDown>      Scroll commit list down one page" $M1T]
3027[mc "<Shift-Up> Find backwards (upwards, later commits)"]
3028[mc "<Shift-Down>       Find forwards (downwards, earlier commits)"]
3029[mc "<Delete>, b        Scroll diff view up one page"]
3030[mc "<Backspace>        Scroll diff view up one page"]
3031[mc "<Space>            Scroll diff view down one page"]
3032[mc "u          Scroll diff view up 18 lines"]
3033[mc "d          Scroll diff view down 18 lines"]
3034[mc "<%s-F>             Find" $M1T]
3035[mc "<%s-G>             Move to next find hit" $M1T]
3036[mc "<Return>   Move to next find hit"]
3037[mc "/          Focus the search box"]
3038[mc "?          Move to previous find hit"]
3039[mc "f          Scroll diff view to next file"]
3040[mc "<%s-S>             Search for next hit in diff view" $M1T]
3041[mc "<%s-R>             Search for previous hit in diff view" $M1T]
3042[mc "<%s-KP+>   Increase font size" $M1T]
3043[mc "<%s-plus>  Increase font size" $M1T]
3044[mc "<%s-KP->   Decrease font size" $M1T]
3045[mc "<%s-minus> Decrease font size" $M1T]
3046[mc "<F5>               Update"]
3047" \
3048            -justify left -bg white -border 2 -relief groove
3049    pack $w.m -side top -fill both -padx 2 -pady 2
3050    ${NS}::button $w.ok -text [mc "Close"] -command "destroy $w" -default active
3051    bind $w <Key-Escape> [list destroy $w]
3052    pack $w.ok -side bottom
3053    bind $w <Visibility> "focus $w.ok"
3054    bind $w <Key-Escape> "destroy $w"
3055    bind $w <Key-Return> "destroy $w"
3056}
3057
3058# Procedures for manipulating the file list window at the
3059# bottom right of the overall window.
3060
3061proc treeview {w l openlevs} {
3062    global treecontents treediropen treeheight treeparent treeindex
3063
3064    set ix 0
3065    set treeindex() 0
3066    set lev 0
3067    set prefix {}
3068    set prefixend -1
3069    set prefendstack {}
3070    set htstack {}
3071    set ht 0
3072    set treecontents() {}
3073    $w conf -state normal
3074    foreach f $l {
3075        while {[string range $f 0 $prefixend] ne $prefix} {
3076            if {$lev <= $openlevs} {
3077                $w mark set e:$treeindex($prefix) "end -1c"
3078                $w mark gravity e:$treeindex($prefix) left
3079            }
3080            set treeheight($prefix) $ht
3081            incr ht [lindex $htstack end]
3082            set htstack [lreplace $htstack end end]
3083            set prefixend [lindex $prefendstack end]
3084            set prefendstack [lreplace $prefendstack end end]
3085            set prefix [string range $prefix 0 $prefixend]
3086            incr lev -1
3087        }
3088        set tail [string range $f [expr {$prefixend+1}] end]
3089        while {[set slash [string first "/" $tail]] >= 0} {
3090            lappend htstack $ht
3091            set ht 0
3092            lappend prefendstack $prefixend
3093            incr prefixend [expr {$slash + 1}]
3094            set d [string range $tail 0 $slash]
3095            lappend treecontents($prefix) $d
3096            set oldprefix $prefix
3097            append prefix $d
3098            set treecontents($prefix) {}
3099            set treeindex($prefix) [incr ix]
3100            set treeparent($prefix) $oldprefix
3101            set tail [string range $tail [expr {$slash+1}] end]
3102            if {$lev <= $openlevs} {
3103                set ht 1
3104                set treediropen($prefix) [expr {$lev < $openlevs}]
3105                set bm [expr {$lev == $openlevs? "tri-rt": "tri-dn"}]
3106                $w mark set d:$ix "end -1c"
3107                $w mark gravity d:$ix left
3108                set str "\n"
3109                for {set i 0} {$i < $lev} {incr i} {append str "\t"}
3110                $w insert end $str
3111                $w image create end -align center -image $bm -padx 1 \
3112                    -name a:$ix
3113                $w insert end $d [highlight_tag $prefix]
3114                $w mark set s:$ix "end -1c"
3115                $w mark gravity s:$ix left
3116            }
3117            incr lev
3118        }
3119        if {$tail ne {}} {
3120            if {$lev <= $openlevs} {
3121                incr ht
3122                set str "\n"
3123                for {set i 0} {$i < $lev} {incr i} {append str "\t"}
3124                $w insert end $str
3125                $w insert end $tail [highlight_tag $f]
3126            }
3127            lappend treecontents($prefix) $tail
3128        }
3129    }
3130    while {$htstack ne {}} {
3131        set treeheight($prefix) $ht
3132        incr ht [lindex $htstack end]
3133        set htstack [lreplace $htstack end end]
3134        set prefixend [lindex $prefendstack end]
3135        set prefendstack [lreplace $prefendstack end end]
3136        set prefix [string range $prefix 0 $prefixend]
3137    }
3138    $w conf -state disabled
3139}
3140
3141proc linetoelt {l} {
3142    global treeheight treecontents
3143
3144    set y 2
3145    set prefix {}
3146    while {1} {
3147        foreach e $treecontents($prefix) {
3148            if {$y == $l} {
3149                return "$prefix$e"
3150            }
3151            set n 1
3152            if {[string index $e end] eq "/"} {
3153                set n $treeheight($prefix$e)
3154                if {$y + $n > $l} {
3155                    append prefix $e
3156                    incr y
3157                    break
3158                }
3159            }
3160            incr y $n
3161        }
3162    }
3163}
3164
3165proc highlight_tree {y prefix} {
3166    global treeheight treecontents cflist
3167
3168    foreach e $treecontents($prefix) {
3169        set path $prefix$e
3170        if {[highlight_tag $path] ne {}} {
3171            $cflist tag add bold $y.0 "$y.0 lineend"
3172        }
3173        incr y
3174        if {[string index $e end] eq "/" && $treeheight($path) > 1} {
3175            set y [highlight_tree $y $path]
3176        }
3177    }
3178    return $y
3179}
3180
3181proc treeclosedir {w dir} {
3182    global treediropen treeheight treeparent treeindex
3183
3184    set ix $treeindex($dir)
3185    $w conf -state normal
3186    $w delete s:$ix e:$ix
3187    set treediropen($dir) 0
3188    $w image configure a:$ix -image tri-rt
3189    $w conf -state disabled
3190    set n [expr {1 - $treeheight($dir)}]
3191    while {$dir ne {}} {
3192        incr treeheight($dir) $n
3193        set dir $treeparent($dir)
3194    }
3195}
3196
3197proc treeopendir {w dir} {
3198    global treediropen treeheight treeparent treecontents treeindex
3199
3200    set ix $treeindex($dir)
3201    $w conf -state normal
3202    $w image configure a:$ix -image tri-dn
3203    $w mark set e:$ix s:$ix
3204    $w mark gravity e:$ix right
3205    set lev 0
3206    set str "\n"
3207    set n [llength $treecontents($dir)]
3208    for {set x $dir} {$x ne {}} {set x $treeparent($x)} {
3209        incr lev
3210        append str "\t"
3211        incr treeheight($x) $n
3212    }
3213    foreach e $treecontents($dir) {
3214        set de $dir$e
3215        if {[string index $e end] eq "/"} {
3216            set iy $treeindex($de)
3217            $w mark set d:$iy e:$ix
3218            $w mark gravity d:$iy left
3219            $w insert e:$ix $str
3220            set treediropen($de) 0
3221            $w image create e:$ix -align center -image tri-rt -padx 1 \
3222                -name a:$iy
3223            $w insert e:$ix $e [highlight_tag $de]
3224            $w mark set s:$iy e:$ix
3225            $w mark gravity s:$iy left
3226            set treeheight($de) 1
3227        } else {
3228            $w insert e:$ix $str
3229            $w insert e:$ix $e [highlight_tag $de]
3230        }
3231    }
3232    $w mark gravity e:$ix right
3233    $w conf -state disabled
3234    set treediropen($dir) 1
3235    set top [lindex [split [$w index @0,0] .] 0]
3236    set ht [$w cget -height]
3237    set l [lindex [split [$w index s:$ix] .] 0]
3238    if {$l < $top} {
3239        $w yview $l.0
3240    } elseif {$l + $n + 1 > $top + $ht} {
3241        set top [expr {$l + $n + 2 - $ht}]
3242        if {$l < $top} {
3243            set top $l
3244        }
3245        $w yview $top.0
3246    }
3247}
3248
3249proc treeclick {w x y} {
3250    global treediropen cmitmode ctext cflist cflist_top
3251
3252    if {$cmitmode ne "tree"} return
3253    if {![info exists cflist_top]} return
3254    set l [lindex [split [$w index "@$x,$y"] "."] 0]
3255    $cflist tag remove highlight $cflist_top.0 "$cflist_top.0 lineend"
3256    $cflist tag add highlight $l.0 "$l.0 lineend"
3257    set cflist_top $l
3258    if {$l == 1} {
3259        $ctext yview 1.0
3260        return
3261    }
3262    set e [linetoelt $l]
3263    if {[string index $e end] ne "/"} {
3264        showfile $e
3265    } elseif {$treediropen($e)} {
3266        treeclosedir $w $e
3267    } else {
3268        treeopendir $w $e
3269    }
3270}
3271
3272proc setfilelist {id} {
3273    global treefilelist cflist jump_to_here
3274
3275    treeview $cflist $treefilelist($id) 0
3276    if {$jump_to_here ne {}} {
3277        set f [lindex $jump_to_here 0]
3278        if {[lsearch -exact $treefilelist($id) $f] >= 0} {
3279            showfile $f
3280        }
3281    }
3282}
3283
3284image create bitmap tri-rt -background black -foreground blue -data {
3285    #define tri-rt_width 13
3286    #define tri-rt_height 13
3287    static unsigned char tri-rt_bits[] = {
3288       0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x30, 0x00, 0x70, 0x00, 0xf0, 0x00,
3289       0xf0, 0x01, 0xf0, 0x00, 0x70, 0x00, 0x30, 0x00, 0x10, 0x00, 0x00, 0x00,
3290       0x00, 0x00};
3291} -maskdata {
3292    #define tri-rt-mask_width 13
3293    #define tri-rt-mask_height 13
3294    static unsigned char tri-rt-mask_bits[] = {
3295       0x08, 0x00, 0x18, 0x00, 0x38, 0x00, 0x78, 0x00, 0xf8, 0x00, 0xf8, 0x01,
3296       0xf8, 0x03, 0xf8, 0x01, 0xf8, 0x00, 0x78, 0x00, 0x38, 0x00, 0x18, 0x00,
3297       0x08, 0x00};
3298}
3299image create bitmap tri-dn -background black -foreground blue -data {
3300    #define tri-dn_width 13
3301    #define tri-dn_height 13
3302    static unsigned char tri-dn_bits[] = {
3303       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0x07, 0xf8, 0x03,
3304       0xf0, 0x01, 0xe0, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
3305       0x00, 0x00};
3306} -maskdata {
3307    #define tri-dn-mask_width 13
3308    #define tri-dn-mask_height 13
3309    static unsigned char tri-dn-mask_bits[] = {
3310       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x1f, 0xfe, 0x0f, 0xfc, 0x07,
3311       0xf8, 0x03, 0xf0, 0x01, 0xe0, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
3312       0x00, 0x00};
3313}
3314
3315image create bitmap reficon-T -background black -foreground yellow -data {
3316    #define tagicon_width 13
3317    #define tagicon_height 9
3318    static unsigned char tagicon_bits[] = {
3319       0x00, 0x00, 0x00, 0x00, 0xf0, 0x07, 0xf8, 0x07,
3320       0xfc, 0x07, 0xf8, 0x07, 0xf0, 0x07, 0x00, 0x00, 0x00, 0x00};
3321} -maskdata {
3322    #define tagicon-mask_width 13
3323    #define tagicon-mask_height 9
3324    static unsigned char tagicon-mask_bits[] = {
3325       0x00, 0x00, 0xf0, 0x0f, 0xf8, 0x0f, 0xfc, 0x0f,
3326       0xfe, 0x0f, 0xfc, 0x0f, 0xf8, 0x0f, 0xf0, 0x0f, 0x00, 0x00};
3327}
3328set rectdata {
3329    #define headicon_width 13
3330    #define headicon_height 9
3331    static unsigned char headicon_bits[] = {
3332       0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0xf8, 0x07,
3333       0xf8, 0x07, 0xf8, 0x07, 0xf8, 0x07, 0x00, 0x00, 0x00, 0x00};
3334}
3335set rectmask {
3336    #define headicon-mask_width 13
3337    #define headicon-mask_height 9
3338    static unsigned char headicon-mask_bits[] = {
3339       0x00, 0x00, 0xfc, 0x0f, 0xfc, 0x0f, 0xfc, 0x0f,
3340       0xfc, 0x0f, 0xfc, 0x0f, 0xfc, 0x0f, 0xfc, 0x0f, 0x00, 0x00};
3341}
3342image create bitmap reficon-H -background black -foreground green \
3343    -data $rectdata -maskdata $rectmask
3344image create bitmap reficon-o -background black -foreground "#ddddff" \
3345    -data $rectdata -maskdata $rectmask
3346
3347proc init_flist {first} {
3348    global cflist cflist_top difffilestart
3349
3350    $cflist conf -state normal
3351    $cflist delete 0.0 end
3352    if {$first ne {}} {
3353        $cflist insert end $first
3354        set cflist_top 1
3355        $cflist tag add highlight 1.0 "1.0 lineend"
3356    } else {
3357        catch {unset cflist_top}
3358    }
3359    $cflist conf -state disabled
3360    set difffilestart {}
3361}
3362
3363proc highlight_tag {f} {
3364    global highlight_paths
3365
3366    foreach p $highlight_paths {
3367        if {[string match $p $f]} {
3368            return "bold"
3369        }
3370    }
3371    return {}
3372}
3373
3374proc highlight_filelist {} {
3375    global cmitmode cflist
3376
3377    $cflist conf -state normal
3378    if {$cmitmode ne "tree"} {
3379        set end [lindex [split [$cflist index end] .] 0]
3380        for {set l 2} {$l < $end} {incr l} {
3381            set line [$cflist get $l.0 "$l.0 lineend"]
3382            if {[highlight_tag $line] ne {}} {
3383                $cflist tag add bold $l.0 "$l.0 lineend"
3384            }
3385        }
3386    } else {
3387        highlight_tree 2 {}
3388    }
3389    $cflist conf -state disabled
3390}
3391
3392proc unhighlight_filelist {} {
3393    global cflist
3394
3395    $cflist conf -state normal
3396    $cflist tag remove bold 1.0 end
3397    $cflist conf -state disabled
3398}
3399
3400proc add_flist {fl} {
3401    global cflist
3402
3403    $cflist conf -state normal
3404    foreach f $fl {
3405        $cflist insert end "\n"
3406        $cflist insert end $f [highlight_tag $f]
3407    }
3408    $cflist conf -state disabled
3409}
3410
3411proc sel_flist {w x y} {
3412    global ctext difffilestart cflist cflist_top cmitmode
3413
3414    if {$cmitmode eq "tree"} return
3415    if {![info exists cflist_top]} return
3416    set l [lindex [split [$w index "@$x,$y"] "."] 0]
3417    $cflist tag remove highlight $cflist_top.0 "$cflist_top.0 lineend"
3418    $cflist tag add highlight $l.0 "$l.0 lineend"
3419    set cflist_top $l
3420    if {$l == 1} {
3421        $ctext yview 1.0
3422    } else {
3423        catch {$ctext yview [lindex $difffilestart [expr {$l - 2}]]}
3424    }
3425    suppress_highlighting_file_for_current_scrollpos
3426}
3427
3428proc pop_flist_menu {w X Y x y} {
3429    global ctext cflist cmitmode flist_menu flist_menu_file
3430    global treediffs diffids
3431
3432    stopfinding
3433    set l [lindex [split [$w index "@$x,$y"] "."] 0]
3434    if {$l <= 1} return
3435    if {$cmitmode eq "tree"} {
3436        set e [linetoelt $l]
3437        if {[string index $e end] eq "/"} return
3438    } else {
3439        set e [lindex $treediffs($diffids) [expr {$l-2}]]
3440    }
3441    set flist_menu_file $e
3442    set xdiffstate "normal"
3443    if {$cmitmode eq "tree"} {
3444        set xdiffstate "disabled"
3445    }
3446    # Disable "External diff" item in tree mode
3447    $flist_menu entryconf 2 -state $xdiffstate
3448    tk_popup $flist_menu $X $Y
3449}
3450
3451proc find_ctext_fileinfo {line} {
3452    global ctext_file_names ctext_file_lines
3453
3454    set ok [bsearch $ctext_file_lines $line]
3455    set tline [lindex $ctext_file_lines $ok]
3456
3457    if {$ok >= [llength $ctext_file_lines] || $line < $tline} {
3458        return {}
3459    } else {
3460        return [list [lindex $ctext_file_names $ok] $tline]
3461    }
3462}
3463
3464proc pop_diff_menu {w X Y x y} {
3465    global ctext diff_menu flist_menu_file
3466    global diff_menu_txtpos diff_menu_line
3467    global diff_menu_filebase
3468
3469    set diff_menu_txtpos [split [$w index "@$x,$y"] "."]
3470    set diff_menu_line [lindex $diff_menu_txtpos 0]
3471    # don't pop up the menu on hunk-separator or file-separator lines
3472    if {[lsearch -glob [$ctext tag names $diff_menu_line.0] "*sep"] >= 0} {
3473        return
3474    }
3475    stopfinding
3476    set f [find_ctext_fileinfo $diff_menu_line]
3477    if {$f eq {}} return
3478    set flist_menu_file [lindex $f 0]
3479    set diff_menu_filebase [lindex $f 1]
3480    tk_popup $diff_menu $X $Y
3481}
3482
3483proc flist_hl {only} {
3484    global flist_menu_file findstring gdttype
3485
3486    set x [shellquote $flist_menu_file]
3487    if {$only || $findstring eq {} || $gdttype ne [mc "touching paths:"]} {
3488        set findstring $x
3489    } else {
3490        append findstring " " $x
3491    }
3492    set gdttype [mc "touching paths:"]
3493}
3494
3495proc gitknewtmpdir {} {
3496    global diffnum gitktmpdir gitdir env
3497
3498    if {![info exists gitktmpdir]} {
3499        if {[info exists env(GITK_TMPDIR)]} {
3500            set tmpdir $env(GITK_TMPDIR)
3501        } elseif {[info exists env(TMPDIR)]} {
3502            set tmpdir $env(TMPDIR)
3503        } else {
3504            set tmpdir $gitdir
3505        }
3506        set gitktmpformat [file join $tmpdir ".gitk-tmp.XXXXXX"]
3507        set gitktmpdir [exec mktemp -d $gitktmpformat]
3508        if {[catch {file mkdir $gitktmpdir} err]} {
3509            error_popup "[mc "Error creating temporary directory %s:" $gitktmpdir] $err"
3510            unset gitktmpdir
3511            return {}
3512        }
3513        set diffnum 0
3514    }
3515    incr diffnum
3516    set diffdir [file join $gitktmpdir $diffnum]
3517    if {[catch {file mkdir $diffdir} err]} {
3518        error_popup "[mc "Error creating temporary directory %s:" $diffdir] $err"
3519        return {}
3520    }
3521    return $diffdir
3522}
3523
3524proc save_file_from_commit {filename output what} {
3525    global nullfile
3526
3527    if {[catch {exec git show $filename -- > $output} err]} {
3528        if {[string match "fatal: bad revision *" $err]} {
3529            return $nullfile
3530        }
3531        error_popup "[mc "Error getting \"%s\" from %s:" $filename $what] $err"
3532        return {}
3533    }
3534    return $output
3535}
3536
3537proc external_diff_get_one_file {diffid filename diffdir} {
3538    global nullid nullid2 nullfile
3539    global worktree
3540
3541    if {$diffid == $nullid} {
3542        set difffile [file join $worktree $filename]
3543        if {[file exists $difffile]} {
3544            return $difffile
3545        }
3546        return $nullfile
3547    }
3548    if {$diffid == $nullid2} {
3549        set difffile [file join $diffdir "\[index\] [file tail $filename]"]
3550        return [save_file_from_commit :$filename $difffile index]
3551    }
3552    set difffile [file join $diffdir "\[$diffid\] [file tail $filename]"]
3553    return [save_file_from_commit $diffid:$filename $difffile \
3554               "revision $diffid"]
3555}
3556
3557proc external_diff {} {
3558    global nullid nullid2
3559    global flist_menu_file
3560    global diffids
3561    global extdifftool
3562
3563    if {[llength $diffids] == 1} {
3564        # no reference commit given
3565        set diffidto [lindex $diffids 0]
3566        if {$diffidto eq $nullid} {
3567            # diffing working copy with index
3568            set diffidfrom $nullid2
3569        } elseif {$diffidto eq $nullid2} {
3570            # diffing index with HEAD
3571            set diffidfrom "HEAD"
3572        } else {
3573            # use first parent commit
3574            global parentlist selectedline
3575            set diffidfrom [lindex $parentlist $selectedline 0]
3576        }
3577    } else {
3578        set diffidfrom [lindex $diffids 0]
3579        set diffidto [lindex $diffids 1]
3580    }
3581
3582    # make sure that several diffs wont collide
3583    set diffdir [gitknewtmpdir]
3584    if {$diffdir eq {}} return
3585
3586    # gather files to diff
3587    set difffromfile [external_diff_get_one_file $diffidfrom $flist_menu_file $diffdir]
3588    set difftofile [external_diff_get_one_file $diffidto $flist_menu_file $diffdir]
3589
3590    if {$difffromfile ne {} && $difftofile ne {}} {
3591        set cmd [list [shellsplit $extdifftool] $difffromfile $difftofile]
3592        if {[catch {set fl [open |$cmd r]} err]} {
3593            file delete -force $diffdir
3594            error_popup "$extdifftool: [mc "command failed:"] $err"
3595        } else {
3596            fconfigure $fl -blocking 0
3597            filerun $fl [list delete_at_eof $fl $diffdir]
3598        }
3599    }
3600}
3601
3602proc find_hunk_blamespec {base line} {
3603    global ctext
3604
3605    # Find and parse the hunk header
3606    set s_lix [$ctext search -backwards -regexp ^@@ "$line.0 lineend" $base.0]
3607    if {$s_lix eq {}} return
3608
3609    set s_line [$ctext get $s_lix "$s_lix + 1 lines"]
3610    if {![regexp {^@@@*(( -\d+(,\d+)?)+) \+(\d+)(,\d+)? @@} $s_line \
3611            s_line old_specs osz osz1 new_line nsz]} {
3612        return
3613    }
3614
3615    # base lines for the parents
3616    set base_lines [list $new_line]
3617    foreach old_spec [lrange [split $old_specs " "] 1 end] {
3618        if {![regexp -- {-(\d+)(,\d+)?} $old_spec \
3619                old_spec old_line osz]} {
3620            return
3621        }
3622        lappend base_lines $old_line
3623    }
3624
3625    # Now scan the lines to determine offset within the hunk
3626    set max_parent [expr {[llength $base_lines]-2}]
3627    set dline 0
3628    set s_lno [lindex [split $s_lix "."] 0]
3629
3630    # Determine if the line is removed
3631    set chunk [$ctext get $line.0 "$line.1 + $max_parent chars"]
3632    if {[string match {[-+ ]*} $chunk]} {
3633        set removed_idx [string first "-" $chunk]
3634        # Choose a parent index
3635        if {$removed_idx >= 0} {
3636            set parent $removed_idx
3637        } else {
3638            set unchanged_idx [string first " " $chunk]
3639            if {$unchanged_idx >= 0} {
3640                set parent $unchanged_idx
3641            } else {
3642                # blame the current commit
3643                set parent -1
3644            }
3645        }
3646        # then count other lines that belong to it
3647        for {set i $line} {[incr i -1] > $s_lno} {} {
3648            set chunk [$ctext get $i.0 "$i.1 + $max_parent chars"]
3649            # Determine if the line is removed
3650            set removed_idx [string first "-" $chunk]
3651            if {$parent >= 0} {
3652                set code [string index $chunk $parent]
3653                if {$code eq "-" || ($removed_idx < 0 && $code ne "+")} {
3654                    incr dline
3655                }
3656            } else {
3657                if {$removed_idx < 0} {
3658                    incr dline
3659                }
3660            }
3661        }
3662        incr parent
3663    } else {
3664        set parent 0
3665    }
3666
3667    incr dline [lindex $base_lines $parent]
3668    return [list $parent $dline]
3669}
3670
3671proc external_blame_diff {} {
3672    global currentid cmitmode
3673    global diff_menu_txtpos diff_menu_line
3674    global diff_menu_filebase flist_menu_file
3675
3676    if {$cmitmode eq "tree"} {
3677        set parent_idx 0
3678        set line [expr {$diff_menu_line - $diff_menu_filebase}]
3679    } else {
3680        set hinfo [find_hunk_blamespec $diff_menu_filebase $diff_menu_line]
3681        if {$hinfo ne {}} {
3682            set parent_idx [lindex $hinfo 0]
3683            set line [lindex $hinfo 1]
3684        } else {
3685            set parent_idx 0
3686            set line 0
3687        }
3688    }
3689
3690    external_blame $parent_idx $line
3691}
3692
3693# Find the SHA1 ID of the blob for file $fname in the index
3694# at stage 0 or 2
3695proc index_sha1 {fname} {
3696    set f [open [list | git ls-files -s $fname] r]
3697    while {[gets $f line] >= 0} {
3698        set info [lindex [split $line "\t"] 0]
3699        set stage [lindex $info 2]
3700        if {$stage eq "0" || $stage eq "2"} {
3701            close $f
3702            return [lindex $info 1]
3703        }
3704    }
3705    close $f
3706    return {}
3707}
3708
3709# Turn an absolute path into one relative to the current directory
3710proc make_relative {f} {
3711    if {[file pathtype $f] eq "relative"} {
3712        return $f
3713    }
3714    set elts [file split $f]
3715    set here [file split [pwd]]
3716    set ei 0
3717    set hi 0
3718    set res {}
3719    foreach d $here {
3720        if {$ei < $hi || $ei >= [llength $elts] || [lindex $elts $ei] ne $d} {
3721            lappend res ".."
3722        } else {
3723            incr ei
3724        }
3725        incr hi
3726    }
3727    set elts [concat $res [lrange $elts $ei end]]
3728    return [eval file join $elts]
3729}
3730
3731proc external_blame {parent_idx {line {}}} {
3732    global flist_menu_file cdup
3733    global nullid nullid2
3734    global parentlist selectedline currentid
3735
3736    if {$parent_idx > 0} {
3737        set base_commit [lindex $parentlist $selectedline [expr {$parent_idx-1}]]
3738    } else {
3739        set base_commit $currentid
3740    }
3741
3742    if {$base_commit eq {} || $base_commit eq $nullid || $base_commit eq $nullid2} {
3743        error_popup [mc "No such commit"]
3744        return
3745    }
3746
3747    set cmdline [list git gui blame]
3748    if {$line ne {} && $line > 1} {
3749        lappend cmdline "--line=$line"
3750    }
3751    set f [file join $cdup $flist_menu_file]
3752    # Unfortunately it seems git gui blame doesn't like
3753    # being given an absolute path...
3754    set f [make_relative $f]
3755    lappend cmdline $base_commit $f
3756    if {[catch {eval exec $cmdline &} err]} {
3757        error_popup "[mc "git gui blame: command failed:"] $err"
3758    }
3759}
3760
3761proc show_line_source {} {
3762    global cmitmode currentid parents curview blamestuff blameinst
3763    global diff_menu_line diff_menu_filebase flist_menu_file
3764    global nullid nullid2 gitdir cdup
3765
3766    set from_index {}
3767    if {$cmitmode eq "tree"} {
3768        set id $currentid
3769        set line [expr {$diff_menu_line - $diff_menu_filebase}]
3770    } else {
3771        set h [find_hunk_blamespec $diff_menu_filebase $diff_menu_line]
3772        if {$h eq {}} return
3773        set pi [lindex $h 0]
3774        if {$pi == 0} {
3775            mark_ctext_line $diff_menu_line
3776            return
3777        }
3778        incr pi -1
3779        if {$currentid eq $nullid} {
3780            if {$pi > 0} {
3781                # must be a merge in progress...
3782                if {[catch {
3783                    # get the last line from .git/MERGE_HEAD
3784                    set f [open [file join $gitdir MERGE_HEAD] r]
3785                    set id [lindex [split [read $f] "\n"] end-1]
3786                    close $f
3787                } err]} {
3788                    error_popup [mc "Couldn't read merge head: %s" $err]
3789                    return
3790                }
3791            } elseif {$parents($curview,$currentid) eq $nullid2} {
3792                # need to do the blame from the index
3793                if {[catch {
3794                    set from_index [index_sha1 $flist_menu_file]
3795                } err]} {
3796                    error_popup [mc "Error reading index: %s" $err]
3797                    return
3798                }
3799            } else {
3800                set id $parents($curview,$currentid)
3801            }
3802        } else {
3803            set id [lindex $parents($curview,$currentid) $pi]
3804        }
3805        set line [lindex $h 1]
3806    }
3807    set blameargs {}
3808    if {$from_index ne {}} {
3809        lappend blameargs | git cat-file blob $from_index
3810    }
3811    lappend blameargs | git blame -p -L$line,+1
3812    if {$from_index ne {}} {
3813        lappend blameargs --contents -
3814    } else {
3815        lappend blameargs $id
3816    }
3817    lappend blameargs -- [file join $cdup $flist_menu_file]
3818    if {[catch {
3819        set f [open $blameargs r]
3820    } err]} {
3821        error_popup [mc "Couldn't start git blame: %s" $err]
3822        return
3823    }
3824    nowbusy blaming [mc "Searching"]
3825    fconfigure $f -blocking 0
3826    set i [reg_instance $f]
3827    set blamestuff($i) {}
3828    set blameinst $i
3829    filerun $f [list read_line_source $f $i]
3830}
3831
3832proc stopblaming {} {
3833    global blameinst
3834
3835    if {[info exists blameinst]} {
3836        stop_instance $blameinst
3837        unset blameinst
3838        notbusy blaming
3839    }
3840}
3841
3842proc read_line_source {fd inst} {
3843    global blamestuff curview commfd blameinst nullid nullid2
3844
3845    while {[gets $fd line] >= 0} {
3846        lappend blamestuff($inst) $line
3847    }
3848    if {![eof $fd]} {
3849        return 1
3850    }
3851    unset commfd($inst)
3852    unset blameinst
3853    notbusy blaming
3854    fconfigure $fd -blocking 1
3855    if {[catch {close $fd} err]} {
3856        error_popup [mc "Error running git blame: %s" $err]
3857        return 0
3858    }
3859
3860    set fname {}
3861    set line [split [lindex $blamestuff($inst) 0] " "]
3862    set id [lindex $line 0]
3863    set lnum [lindex $line 1]
3864    if {[string length $id] == 40 && [string is xdigit $id] &&
3865        [string is digit -strict $lnum]} {
3866        # look for "filename" line
3867        foreach l $blamestuff($inst) {
3868            if {[string match "filename *" $l]} {
3869                set fname [string range $l 9 end]
3870                break
3871            }
3872        }
3873    }
3874    if {$fname ne {}} {
3875        # all looks good, select it
3876        if {$id eq $nullid} {
3877            # blame uses all-zeroes to mean not committed,
3878            # which would mean a change in the index
3879            set id $nullid2
3880        }
3881        if {[commitinview $id $curview]} {
3882            selectline [rowofcommit $id] 1 [list $fname $lnum] 1
3883        } else {
3884            error_popup [mc "That line comes from commit %s, \
3885                             which is not in this view" [shortids $id]]
3886        }
3887    } else {
3888        puts "oops couldn't parse git blame output"
3889    }
3890    return 0
3891}
3892
3893# delete $dir when we see eof on $f (presumably because the child has exited)
3894proc delete_at_eof {f dir} {
3895    while {[gets $f line] >= 0} {}
3896    if {[eof $f]} {
3897        if {[catch {close $f} err]} {
3898            error_popup "[mc "External diff viewer failed:"] $err"
3899        }
3900        file delete -force $dir
3901        return 0
3902    }
3903    return 1
3904}
3905
3906# Functions for adding and removing shell-type quoting
3907
3908proc shellquote {str} {
3909    if {![string match "*\['\"\\ \t]*" $str]} {
3910        return $str
3911    }
3912    if {![string match "*\['\"\\]*" $str]} {
3913        return "\"$str\""
3914    }
3915    if {![string match "*'*" $str]} {
3916        return "'$str'"
3917    }
3918    return "\"[string map {\" \\\" \\ \\\\} $str]\""
3919}
3920
3921proc shellarglist {l} {
3922    set str {}
3923    foreach a $l {
3924        if {$str ne {}} {
3925            append str " "
3926        }
3927        append str [shellquote $a]
3928    }
3929    return $str
3930}
3931
3932proc shelldequote {str} {
3933    set ret {}
3934    set used -1
3935    while {1} {
3936        incr used
3937        if {![regexp -start $used -indices "\['\"\\\\ \t]" $str first]} {
3938            append ret [string range $str $used end]
3939            set used [string length $str]
3940            break
3941        }
3942        set first [lindex $first 0]
3943        set ch [string index $str $first]
3944        if {$first > $used} {
3945            append ret [string range $str $used [expr {$first - 1}]]
3946            set used $first
3947        }
3948        if {$ch eq " " || $ch eq "\t"} break
3949        incr used
3950        if {$ch eq "'"} {
3951            set first [string first "'" $str $used]
3952            if {$first < 0} {
3953                error "unmatched single-quote"
3954            }
3955            append ret [string range $str $used [expr {$first - 1}]]
3956            set used $first
3957            continue
3958        }
3959        if {$ch eq "\\"} {
3960            if {$used >= [string length $str]} {
3961                error "trailing backslash"
3962            }
3963            append ret [string index $str $used]
3964            continue
3965        }
3966        # here ch == "\""
3967        while {1} {
3968            if {![regexp -start $used -indices "\[\"\\\\]" $str first]} {
3969                error "unmatched double-quote"
3970            }
3971            set first [lindex $first 0]
3972            set ch [string index $str $first]
3973            if {$first > $used} {
3974                append ret [string range $str $used [expr {$first - 1}]]
3975                set used $first
3976            }
3977            if {$ch eq "\""} break
3978            incr used
3979            append ret [string index $str $used]
3980            incr used
3981        }
3982    }
3983    return [list $used $ret]
3984}
3985
3986proc shellsplit {str} {
3987    set l {}
3988    while {1} {
3989        set str [string trimleft $str]
3990        if {$str eq {}} break
3991        set dq [shelldequote $str]
3992        set n [lindex $dq 0]
3993        set word [lindex $dq 1]
3994        set str [string range $str $n end]
3995        lappend l $word
3996    }
3997    return $l
3998}
3999
4000# Code to implement multiple views
4001
4002proc newview {ishighlight} {
4003    global nextviewnum newviewname newishighlight
4004    global revtreeargs viewargscmd newviewopts curview
4005
4006    set newishighlight $ishighlight
4007    set top .gitkview
4008    if {[winfo exists $top]} {
4009        raise $top
4010        return
4011    }
4012    decode_view_opts $nextviewnum $revtreeargs
4013    set newviewname($nextviewnum) "[mc "View"] $nextviewnum"
4014    set newviewopts($nextviewnum,perm) 0
4015    set newviewopts($nextviewnum,cmd)  $viewargscmd($curview)
4016    vieweditor $top $nextviewnum [mc "Gitk view definition"]
4017}
4018
4019set known_view_options {
4020    {perm      b    .  {}               {mc "Remember this view"}}
4021    {reflabel  l    +  {}               {mc "References (space separated list):"}}
4022    {refs      t15  .. {}               {mc "Branches & tags:"}}
4023    {allrefs   b    *. "--all"          {mc "All refs"}}
4024    {branches  b    .  "--branches"     {mc "All (local) branches"}}
4025    {tags      b    .  "--tags"         {mc "All tags"}}
4026    {remotes   b    .  "--remotes"      {mc "All remote-tracking branches"}}
4027    {commitlbl l    +  {}               {mc "Commit Info (regular expressions):"}}
4028    {author    t15  .. "--author=*"     {mc "Author:"}}
4029    {committer t15  .  "--committer=*"  {mc "Committer:"}}
4030    {loginfo   t15  .. "--grep=*"       {mc "Commit Message:"}}
4031    {allmatch  b    .. "--all-match"    {mc "Matches all Commit Info criteria"}}
4032    {changes_l l    +  {}               {mc "Changes to Files:"}}
4033    {pickaxe_s r0   .  {}               {mc "Fixed String"}}
4034    {pickaxe_t r1   .  "--pickaxe-regex"  {mc "Regular Expression"}}
4035    {pickaxe   t15  .. "-S*"            {mc "Search string:"}}
4036    {datelabel l    +  {}               {mc "Commit Dates (\"2 weeks ago\", \"2009-03-17 15:27:38\", \"March 17, 2009 15:27:38\"):"}}
4037    {since     t15  ..  {"--since=*" "--after=*"}  {mc "Since:"}}
4038    {until     t15  .   {"--until=*" "--before=*"} {mc "Until:"}}
4039    {limit_lbl l    +  {}               {mc "Limit and/or skip a number of revisions (positive integer):"}}
4040    {limit     t10  *. "--max-count=*"  {mc "Number to show:"}}
4041    {skip      t10  .  "--skip=*"       {mc "Number to skip:"}}
4042    {misc_lbl  l    +  {}               {mc "Miscellaneous options:"}}
4043    {dorder    b    *. {"--date-order" "-d"}      {mc "Strictly sort by date"}}
4044    {lright    b    .  "--left-right"   {mc "Mark branch sides"}}
4045    {first     b    .  "--first-parent" {mc "Limit to first parent"}}
4046    {smplhst   b    .  "--simplify-by-decoration"   {mc "Simple history"}}
4047    {args      t50  *. {}               {mc "Additional arguments to git log:"}}
4048    {allpaths  path +  {}               {mc "Enter files and directories to include, one per line:"}}
4049    {cmd       t50= +  {}               {mc "Command to generate more commits to include:"}}
4050    }
4051
4052# Convert $newviewopts($n, ...) into args for git log.
4053proc encode_view_opts {n} {
4054    global known_view_options newviewopts
4055
4056    set rargs [list]
4057    foreach opt $known_view_options {
4058        set patterns [lindex $opt 3]
4059        if {$patterns eq {}} continue
4060        set pattern [lindex $patterns 0]
4061
4062        if {[lindex $opt 1] eq "b"} {
4063            set val $newviewopts($n,[lindex $opt 0])
4064            if {$val} {
4065                lappend rargs $pattern
4066            }
4067        } elseif {[regexp {^r(\d+)$} [lindex $opt 1] type value]} {
4068            regexp {^(.*_)} [lindex $opt 0] uselessvar button_id
4069            set val $newviewopts($n,$button_id)
4070            if {$val eq $value} {
4071                lappend rargs $pattern
4072            }
4073        } else {
4074            set val $newviewopts($n,[lindex $opt 0])
4075            set val [string trim $val]
4076            if {$val ne {}} {
4077                set pfix [string range $pattern 0 end-1]
4078                lappend rargs $pfix$val
4079            }
4080        }
4081    }
4082    set rargs [concat $rargs [shellsplit $newviewopts($n,refs)]]
4083    return [concat $rargs [shellsplit $newviewopts($n,args)]]
4084}
4085
4086# Fill $newviewopts($n, ...) based on args for git log.
4087proc decode_view_opts {n view_args} {
4088    global known_view_options newviewopts
4089
4090    foreach opt $known_view_options {
4091        set id [lindex $opt 0]
4092        if {[lindex $opt 1] eq "b"} {
4093            # Checkboxes
4094            set val 0
4095        } elseif {[regexp {^r(\d+)$} [lindex $opt 1]]} {
4096            # Radiobuttons
4097            regexp {^(.*_)} $id uselessvar id
4098            set val 0
4099        } else {
4100            # Text fields
4101            set val {}
4102        }
4103        set newviewopts($n,$id) $val
4104    }
4105    set oargs [list]
4106    set refargs [list]
4107    foreach arg $view_args {
4108        if {[regexp -- {^-([0-9]+)$} $arg arg cnt]
4109            && ![info exists found(limit)]} {
4110            set newviewopts($n,limit) $cnt
4111            set found(limit) 1
4112            continue
4113        }
4114        catch { unset val }
4115        foreach opt $known_view_options {
4116            set id [lindex $opt 0]
4117            if {[info exists found($id)]} continue
4118            foreach pattern [lindex $opt 3] {
4119                if {![string match $pattern $arg]} continue
4120                if {[lindex $opt 1] eq "b"} {
4121                    # Check buttons
4122                    set val 1
4123                } elseif {[regexp {^r(\d+)$} [lindex $opt 1] match num]} {
4124                    # Radio buttons
4125                    regexp {^(.*_)} $id uselessvar id
4126                    set val $num
4127                } else {
4128                    # Text input fields
4129                    set size [string length $pattern]
4130                    set val [string range $arg [expr {$size-1}] end]
4131                }
4132                set newviewopts($n,$id) $val
4133                set found($id) 1
4134                break
4135            }
4136            if {[info exists val]} break
4137        }
4138        if {[info exists val]} continue
4139        if {[regexp {^-} $arg]} {
4140            lappend oargs $arg
4141        } else {
4142            lappend refargs $arg
4143        }
4144    }
4145    set newviewopts($n,refs) [shellarglist $refargs]
4146    set newviewopts($n,args) [shellarglist $oargs]
4147}
4148
4149proc edit_or_newview {} {
4150    global curview
4151
4152    if {$curview > 0} {
4153        editview
4154    } else {
4155        newview 0
4156    }
4157}
4158
4159proc editview {} {
4160    global curview
4161    global viewname viewperm newviewname newviewopts
4162    global viewargs viewargscmd
4163
4164    set top .gitkvedit-$curview
4165    if {[winfo exists $top]} {
4166        raise $top
4167        return
4168    }
4169    decode_view_opts $curview $viewargs($curview)
4170    set newviewname($curview)      $viewname($curview)
4171    set newviewopts($curview,perm) $viewperm($curview)
4172    set newviewopts($curview,cmd)  $viewargscmd($curview)
4173    vieweditor $top $curview "[mc "Gitk: edit view"] $viewname($curview)"
4174}
4175
4176proc vieweditor {top n title} {
4177    global newviewname newviewopts viewfiles bgcolor
4178    global known_view_options NS
4179
4180    ttk_toplevel $top
4181    wm title $top [concat $title [mc "-- criteria for selecting revisions"]]
4182    make_transient $top .
4183
4184    # View name
4185    ${NS}::frame $top.nfr
4186    ${NS}::label $top.nl -text [mc "View Name"]
4187    ${NS}::entry $top.name -width 20 -textvariable newviewname($n)
4188    pack $top.nfr -in $top -fill x -pady 5 -padx 3
4189    pack $top.nl -in $top.nfr -side left -padx {0 5}
4190    pack $top.name -in $top.nfr -side left -padx {0 25}
4191
4192    # View options
4193    set cframe $top.nfr
4194    set cexpand 0
4195    set cnt 0
4196    foreach opt $known_view_options {
4197        set id [lindex $opt 0]
4198        set type [lindex $opt 1]
4199        set flags [lindex $opt 2]
4200        set title [eval [lindex $opt 4]]
4201        set lxpad 0
4202
4203        if {$flags eq "+" || $flags eq "*"} {
4204            set cframe $top.fr$cnt
4205            incr cnt
4206            ${NS}::frame $cframe
4207            pack $cframe -in $top -fill x -pady 3 -padx 3
4208            set cexpand [expr {$flags eq "*"}]
4209        } elseif {$flags eq ".." || $flags eq "*."} {
4210            set cframe $top.fr$cnt
4211            incr cnt
4212            ${NS}::frame $cframe
4213            pack $cframe -in $top -fill x -pady 3 -padx [list 15 3]
4214            set cexpand [expr {$flags eq "*."}]
4215        } else {
4216            set lxpad 5
4217        }
4218
4219        if {$type eq "l"} {
4220            ${NS}::label $cframe.l_$id -text $title
4221            pack $cframe.l_$id -in $cframe -side left -pady [list 3 0] -anchor w
4222        } elseif {$type eq "b"} {
4223            ${NS}::checkbutton $cframe.c_$id -text $title -variable newviewopts($n,$id)
4224            pack $cframe.c_$id -in $cframe -side left \
4225                -padx [list $lxpad 0] -expand $cexpand -anchor w
4226        } elseif {[regexp {^r(\d+)$} $type type sz]} {
4227            regexp {^(.*_)} $id uselessvar button_id
4228            ${NS}::radiobutton $cframe.c_$id -text $title -variable newviewopts($n,$button_id) -value $sz
4229            pack $cframe.c_$id -in $cframe -side left \
4230                -padx [list $lxpad 0] -expand $cexpand -anchor w
4231        } elseif {[regexp {^t(\d+)$} $type type sz]} {
4232            ${NS}::label $cframe.l_$id -text $title
4233            ${NS}::entry $cframe.e_$id -width $sz -background $bgcolor \
4234                -textvariable newviewopts($n,$id)
4235            pack $cframe.l_$id -in $cframe -side left -padx [list $lxpad 0]
4236            pack $cframe.e_$id -in $cframe -side left -expand 1 -fill x
4237        } elseif {[regexp {^t(\d+)=$} $type type sz]} {
4238            ${NS}::label $cframe.l_$id -text $title
4239            ${NS}::entry $cframe.e_$id -width $sz -background $bgcolor \
4240                -textvariable newviewopts($n,$id)
4241            pack $cframe.l_$id -in $cframe -side top -pady [list 3 0] -anchor w
4242            pack $cframe.e_$id -in $cframe -side top -fill x
4243        } elseif {$type eq "path"} {
4244            ${NS}::label $top.l -text $title
4245            pack $top.l -in $top -side top -pady [list 3 0] -anchor w -padx 3
4246            text $top.t -width 40 -height 5 -background $bgcolor
4247            if {[info exists viewfiles($n)]} {
4248                foreach f $viewfiles($n) {
4249                    $top.t insert end $f
4250                    $top.t insert end "\n"
4251                }
4252                $top.t delete {end - 1c} end
4253                $top.t mark set insert 0.0
4254            }
4255            pack $top.t -in $top -side top -pady [list 0 5] -fill both -expand 1 -padx 3
4256        }
4257    }
4258
4259    ${NS}::frame $top.buts
4260    ${NS}::button $top.buts.ok -text [mc "OK"] -command [list newviewok $top $n]
4261    ${NS}::button $top.buts.apply -text [mc "Apply (F5)"] -command [list newviewok $top $n 1]
4262    ${NS}::button $top.buts.can -text [mc "Cancel"] -command [list destroy $top]
4263    bind $top <Control-Return> [list newviewok $top $n]
4264    bind $top <F5> [list newviewok $top $n 1]
4265    bind $top <Escape> [list destroy $top]
4266    grid $top.buts.ok $top.buts.apply $top.buts.can
4267    grid columnconfigure $top.buts 0 -weight 1 -uniform a
4268    grid columnconfigure $top.buts 1 -weight 1 -uniform a
4269    grid columnconfigure $top.buts 2 -weight 1 -uniform a
4270    pack $top.buts -in $top -side top -fill x
4271    focus $top.t
4272}
4273
4274proc doviewmenu {m first cmd op argv} {
4275    set nmenu [$m index end]
4276    for {set i $first} {$i <= $nmenu} {incr i} {
4277        if {[$m entrycget $i -command] eq $cmd} {
4278            eval $m $op $i $argv
4279            break
4280        }
4281    }
4282}
4283
4284proc allviewmenus {n op args} {
4285    # global viewhlmenu
4286
4287    doviewmenu .bar.view 5 [list showview $n] $op $args
4288    # doviewmenu $viewhlmenu 1 [list addvhighlight $n] $op $args
4289}
4290
4291proc newviewok {top n {apply 0}} {
4292    global nextviewnum newviewperm newviewname newishighlight
4293    global viewname viewfiles viewperm selectedview curview
4294    global viewargs viewargscmd newviewopts viewhlmenu
4295
4296    if {[catch {
4297        set newargs [encode_view_opts $n]
4298    } err]} {
4299        error_popup "[mc "Error in commit selection arguments:"] $err" $top
4300        return
4301    }
4302    set files {}
4303    foreach f [split [$top.t get 0.0 end] "\n"] {
4304        set ft [string trim $f]
4305        if {$ft ne {}} {
4306            lappend files $ft
4307        }
4308    }
4309    if {![info exists viewfiles($n)]} {
4310        # creating a new view
4311        incr nextviewnum
4312        set viewname($n) $newviewname($n)
4313        set viewperm($n) $newviewopts($n,perm)
4314        set viewfiles($n) $files
4315        set viewargs($n) $newargs
4316        set viewargscmd($n) $newviewopts($n,cmd)
4317        addviewmenu $n
4318        if {!$newishighlight} {
4319            run showview $n
4320        } else {
4321            run addvhighlight $n
4322        }
4323    } else {
4324        # editing an existing view
4325        set viewperm($n) $newviewopts($n,perm)
4326        if {$newviewname($n) ne $viewname($n)} {
4327            set viewname($n) $newviewname($n)
4328            doviewmenu .bar.view 5 [list showview $n] \
4329                entryconf [list -label $viewname($n)]
4330            # doviewmenu $viewhlmenu 1 [list addvhighlight $n] \
4331                # entryconf [list -label $viewname($n) -value $viewname($n)]
4332        }
4333        if {$files ne $viewfiles($n) || $newargs ne $viewargs($n) || \
4334                $newviewopts($n,cmd) ne $viewargscmd($n)} {
4335            set viewfiles($n) $files
4336            set viewargs($n) $newargs
4337            set viewargscmd($n) $newviewopts($n,cmd)
4338            if {$curview == $n} {
4339                run reloadcommits
4340            }
4341        }
4342    }
4343    if {$apply} return
4344    catch {destroy $top}
4345}
4346
4347proc delview {} {
4348    global curview viewperm hlview selectedhlview
4349
4350    if {$curview == 0} return
4351    if {[info exists hlview] && $hlview == $curview} {
4352        set selectedhlview [mc "None"]
4353        unset hlview
4354    }
4355    allviewmenus $curview delete
4356    set viewperm($curview) 0
4357    showview 0
4358}
4359
4360proc addviewmenu {n} {
4361    global viewname viewhlmenu
4362
4363    .bar.view add radiobutton -label $viewname($n) \
4364        -command [list showview $n] -variable selectedview -value $n
4365    #$viewhlmenu add radiobutton -label $viewname($n) \
4366    #   -command [list addvhighlight $n] -variable selectedhlview
4367}
4368
4369proc showview {n} {
4370    global curview cached_commitrow ordertok
4371    global displayorder parentlist rowidlist rowisopt rowfinal
4372    global colormap rowtextx nextcolor canvxmax
4373    global numcommits viewcomplete
4374    global selectedline currentid canv canvy0
4375    global treediffs
4376    global pending_select mainheadid
4377    global commitidx
4378    global selectedview
4379    global hlview selectedhlview commitinterest
4380
4381    if {$n == $curview} return
4382    set selid {}
4383    set ymax [lindex [$canv cget -scrollregion] 3]
4384    set span [$canv yview]
4385    set ytop [expr {[lindex $span 0] * $ymax}]
4386    set ybot [expr {[lindex $span 1] * $ymax}]
4387    set yscreen [expr {($ybot - $ytop) / 2}]
4388    if {$selectedline ne {}} {
4389        set selid $currentid
4390        set y [yc $selectedline]
4391        if {$ytop < $y && $y < $ybot} {
4392            set yscreen [expr {$y - $ytop}]
4393        }
4394    } elseif {[info exists pending_select]} {
4395        set selid $pending_select
4396        unset pending_select
4397    }
4398    unselectline
4399    normalline
4400    catch {unset treediffs}
4401    clear_display
4402    if {[info exists hlview] && $hlview == $n} {
4403        unset hlview
4404        set selectedhlview [mc "None"]
4405    }
4406    catch {unset commitinterest}
4407    catch {unset cached_commitrow}
4408    catch {unset ordertok}
4409
4410    set curview $n
4411    set selectedview $n
4412    .bar.view entryconf [mca "Edit view..."] -state [expr {$n == 0? "disabled": "normal"}]
4413    .bar.view entryconf [mca "Delete view"] -state [expr {$n == 0? "disabled": "normal"}]
4414
4415    run refill_reflist
4416    if {![info exists viewcomplete($n)]} {
4417        getcommits $selid
4418        return
4419    }
4420
4421    set displayorder {}
4422    set parentlist {}
4423    set rowidlist {}
4424    set rowisopt {}
4425    set rowfinal {}
4426    set numcommits $commitidx($n)
4427
4428    catch {unset colormap}
4429    catch {unset rowtextx}
4430    set nextcolor 0
4431    set canvxmax [$canv cget -width]
4432    set curview $n
4433    set row 0
4434    setcanvscroll
4435    set yf 0
4436    set row {}
4437    if {$selid ne {} && [commitinview $selid $n]} {
4438        set row [rowofcommit $selid]
4439        # try to get the selected row in the same position on the screen
4440        set ymax [lindex [$canv cget -scrollregion] 3]
4441        set ytop [expr {[yc $row] - $yscreen}]
4442        if {$ytop < 0} {
4443            set ytop 0
4444        }
4445        set yf [expr {$ytop * 1.0 / $ymax}]
4446    }
4447    allcanvs yview moveto $yf
4448    drawvisible
4449    if {$row ne {}} {
4450        selectline $row 0
4451    } elseif {!$viewcomplete($n)} {
4452        reset_pending_select $selid
4453    } else {
4454        reset_pending_select {}
4455
4456        if {[commitinview $pending_select $curview]} {
4457            selectline [rowofcommit $pending_select] 1
4458        } else {
4459            set row [first_real_row]
4460            if {$row < $numcommits} {
4461                selectline $row 0
4462            }
4463        }
4464    }
4465    if {!$viewcomplete($n)} {
4466        if {$numcommits == 0} {
4467            show_status [mc "Reading commits..."]
4468        }
4469    } elseif {$numcommits == 0} {
4470        show_status [mc "No commits selected"]
4471    }
4472}
4473
4474# Stuff relating to the highlighting facility
4475
4476proc ishighlighted {id} {
4477    global vhighlights fhighlights nhighlights rhighlights
4478
4479    if {[info exists nhighlights($id)] && $nhighlights($id) > 0} {
4480        return $nhighlights($id)
4481    }
4482    if {[info exists vhighlights($id)] && $vhighlights($id) > 0} {
4483        return $vhighlights($id)
4484    }
4485    if {[info exists fhighlights($id)] && $fhighlights($id) > 0} {
4486        return $fhighlights($id)
4487    }
4488    if {[info exists rhighlights($id)] && $rhighlights($id) > 0} {
4489        return $rhighlights($id)
4490    }
4491    return 0
4492}
4493
4494proc bolden {id font} {
4495    global canv linehtag currentid boldids need_redisplay markedid
4496
4497    # need_redisplay = 1 means the display is stale and about to be redrawn
4498    if {$need_redisplay} return
4499    lappend boldids $id
4500    $canv itemconf $linehtag($id) -font $font
4501    if {[info exists currentid] && $id eq $currentid} {
4502        $canv delete secsel
4503        set t [eval $canv create rect [$canv bbox $linehtag($id)] \
4504                   -outline {{}} -tags secsel \
4505                   -fill [$canv cget -selectbackground]]
4506        $canv lower $t
4507    }
4508    if {[info exists markedid] && $id eq $markedid} {
4509        make_idmark $id
4510    }
4511}
4512
4513proc bolden_name {id font} {
4514    global canv2 linentag currentid boldnameids need_redisplay
4515
4516    if {$need_redisplay} return
4517    lappend boldnameids $id
4518    $canv2 itemconf $linentag($id) -font $font
4519    if {[info exists currentid] && $id eq $currentid} {
4520        $canv2 delete secsel
4521        set t [eval $canv2 create rect [$canv2 bbox $linentag($id)] \
4522                   -outline {{}} -tags secsel \
4523                   -fill [$canv2 cget -selectbackground]]
4524        $canv2 lower $t
4525    }
4526}
4527
4528proc unbolden {} {
4529    global boldids
4530
4531    set stillbold {}
4532    foreach id $boldids {
4533        if {![ishighlighted $id]} {
4534            bolden $id mainfont
4535        } else {
4536            lappend stillbold $id
4537        }
4538    }
4539    set boldids $stillbold
4540}
4541
4542proc addvhighlight {n} {
4543    global hlview viewcomplete curview vhl_done commitidx
4544
4545    if {[info exists hlview]} {
4546        delvhighlight
4547    }
4548    set hlview $n
4549    if {$n != $curview && ![info exists viewcomplete($n)]} {
4550        start_rev_list $n
4551    }
4552    set vhl_done $commitidx($hlview)
4553    if {$vhl_done > 0} {
4554        drawvisible
4555    }
4556}
4557
4558proc delvhighlight {} {
4559    global hlview vhighlights
4560
4561    if {![info exists hlview]} return
4562    unset hlview
4563    catch {unset vhighlights}
4564    unbolden
4565}
4566
4567proc vhighlightmore {} {
4568    global hlview vhl_done commitidx vhighlights curview
4569
4570    set max $commitidx($hlview)
4571    set vr [visiblerows]
4572    set r0 [lindex $vr 0]
4573    set r1 [lindex $vr 1]
4574    for {set i $vhl_done} {$i < $max} {incr i} {
4575        set id [commitonrow $i $hlview]
4576        if {[commitinview $id $curview]} {
4577            set row [rowofcommit $id]
4578            if {$r0 <= $row && $row <= $r1} {
4579                if {![highlighted $row]} {
4580                    bolden $id mainfontbold
4581                }
4582                set vhighlights($id) 1
4583            }
4584        }
4585    }
4586    set vhl_done $max
4587    return 0
4588}
4589
4590proc askvhighlight {row id} {
4591    global hlview vhighlights iddrawn
4592
4593    if {[commitinview $id $hlview]} {
4594        if {[info exists iddrawn($id)] && ![ishighlighted $id]} {
4595            bolden $id mainfontbold
4596        }
4597        set vhighlights($id) 1
4598    } else {
4599        set vhighlights($id) 0
4600    }
4601}
4602
4603proc hfiles_change {} {
4604    global highlight_files filehighlight fhighlights fh_serial
4605    global highlight_paths
4606
4607    if {[info exists filehighlight]} {
4608        # delete previous highlights
4609        catch {close $filehighlight}
4610        unset filehighlight
4611        catch {unset fhighlights}
4612        unbolden
4613        unhighlight_filelist
4614    }
4615    set highlight_paths {}
4616    after cancel do_file_hl $fh_serial
4617    incr fh_serial
4618    if {$highlight_files ne {}} {
4619        after 300 do_file_hl $fh_serial
4620    }
4621}
4622
4623proc gdttype_change {name ix op} {
4624    global gdttype highlight_files findstring findpattern
4625
4626    stopfinding
4627    if {$findstring ne {}} {
4628        if {$gdttype eq [mc "containing:"]} {
4629            if {$highlight_files ne {}} {
4630                set highlight_files {}
4631                hfiles_change
4632            }
4633            findcom_change
4634        } else {
4635            if {$findpattern ne {}} {
4636                set findpattern {}
4637                findcom_change
4638            }
4639            set highlight_files $findstring
4640            hfiles_change
4641        }
4642        drawvisible
4643    }
4644    # enable/disable findtype/findloc menus too
4645}
4646
4647proc find_change {name ix op} {
4648    global gdttype findstring highlight_files
4649
4650    stopfinding
4651    if {$gdttype eq [mc "containing:"]} {
4652        findcom_change
4653    } else {
4654        if {$highlight_files ne $findstring} {
4655            set highlight_files $findstring
4656            hfiles_change
4657        }
4658    }
4659    drawvisible
4660}
4661
4662proc findcom_change args {
4663    global nhighlights boldnameids
4664    global findpattern findtype findstring gdttype
4665
4666    stopfinding
4667    # delete previous highlights, if any
4668    foreach id $boldnameids {
4669        bolden_name $id mainfont
4670    }
4671    set boldnameids {}
4672    catch {unset nhighlights}
4673    unbolden
4674    unmarkmatches
4675    if {$gdttype ne [mc "containing:"] || $findstring eq {}} {
4676        set findpattern {}
4677    } elseif {$findtype eq [mc "Regexp"]} {
4678        set findpattern $findstring
4679    } else {
4680        set e [string map {"*" "\\*" "?" "\\?" "\[" "\\\[" "\\" "\\\\"} \
4681                   $findstring]
4682        set findpattern "*$e*"
4683    }
4684}
4685
4686proc makepatterns {l} {
4687    set ret {}
4688    foreach e $l {
4689        set ee [string map {"*" "\\*" "?" "\\?" "\[" "\\\[" "\\" "\\\\"} $e]
4690        if {[string index $ee end] eq "/"} {
4691            lappend ret "$ee*"
4692        } else {
4693            lappend ret $ee
4694            lappend ret "$ee/*"
4695        }
4696    }
4697    return $ret
4698}
4699
4700proc do_file_hl {serial} {
4701    global highlight_files filehighlight highlight_paths gdttype fhl_list
4702    global cdup findtype
4703
4704    if {$gdttype eq [mc "touching paths:"]} {
4705        # If "exact" match then convert backslashes to forward slashes.
4706        # Most useful to support Windows-flavoured file paths.
4707        if {$findtype eq [mc "Exact"]} {
4708            set highlight_files [string map {"\\" "/"} $highlight_files]
4709        }
4710        if {[catch {set paths [shellsplit $highlight_files]}]} return
4711        set highlight_paths [makepatterns $paths]
4712        highlight_filelist
4713        set relative_paths {}
4714        foreach path $paths {
4715            lappend relative_paths [file join $cdup $path]
4716        }
4717        set gdtargs [concat -- $relative_paths]
4718    } elseif {$gdttype eq [mc "adding/removing string:"]} {
4719        set gdtargs [list "-S$highlight_files"]
4720    } elseif {$gdttype eq [mc "changing lines matching:"]} {
4721        set gdtargs [list "-G$highlight_files"]
4722    } else {
4723        # must be "containing:", i.e. we're searching commit info
4724        return
4725    }
4726    set cmd [concat | git diff-tree -r -s --stdin $gdtargs]
4727    set filehighlight [open $cmd r+]
4728    fconfigure $filehighlight -blocking 0
4729    filerun $filehighlight readfhighlight
4730    set fhl_list {}
4731    drawvisible
4732    flushhighlights
4733}
4734
4735proc flushhighlights {} {
4736    global filehighlight fhl_list
4737
4738    if {[info exists filehighlight]} {
4739        lappend fhl_list {}
4740        puts $filehighlight ""
4741        flush $filehighlight
4742    }
4743}
4744
4745proc askfilehighlight {row id} {
4746    global filehighlight fhighlights fhl_list
4747
4748    lappend fhl_list $id
4749    set fhighlights($id) -1
4750    puts $filehighlight $id
4751}
4752
4753proc readfhighlight {} {
4754    global filehighlight fhighlights curview iddrawn
4755    global fhl_list find_dirn
4756
4757    if {![info exists filehighlight]} {
4758        return 0
4759    }
4760    set nr 0
4761    while {[incr nr] <= 100 && [gets $filehighlight line] >= 0} {
4762        set line [string trim $line]
4763        set i [lsearch -exact $fhl_list $line]
4764        if {$i < 0} continue
4765        for {set j 0} {$j < $i} {incr j} {
4766            set id [lindex $fhl_list $j]
4767            set fhighlights($id) 0
4768        }
4769        set fhl_list [lrange $fhl_list [expr {$i+1}] end]
4770        if {$line eq {}} continue
4771        if {![commitinview $line $curview]} continue
4772        if {[info exists iddrawn($line)] && ![ishighlighted $line]} {
4773            bolden $line mainfontbold
4774        }
4775        set fhighlights($line) 1
4776    }
4777    if {[eof $filehighlight]} {
4778        # strange...
4779        puts "oops, git diff-tree died"
4780        catch {close $filehighlight}
4781        unset filehighlight
4782        return 0
4783    }
4784    if {[info exists find_dirn]} {
4785        run findmore
4786    }
4787    return 1
4788}
4789
4790proc doesmatch {f} {
4791    global findtype findpattern
4792
4793    if {$findtype eq [mc "Regexp"]} {
4794        return [regexp $findpattern $f]
4795    } elseif {$findtype eq [mc "IgnCase"]} {
4796        return [string match -nocase $findpattern $f]
4797    } else {
4798        return [string match $findpattern $f]
4799    }
4800}
4801
4802proc askfindhighlight {row id} {
4803    global nhighlights commitinfo iddrawn
4804    global findloc
4805    global markingmatches
4806
4807    if {![info exists commitinfo($id)]} {
4808        getcommit $id
4809    }
4810    set info $commitinfo($id)
4811    set isbold 0
4812    set fldtypes [list [mc Headline] [mc Author] "" [mc Committer] "" [mc Comments]]
4813    foreach f $info ty $fldtypes {
4814        if {$ty eq ""} continue
4815        if {($findloc eq [mc "All fields"] || $findloc eq $ty) &&
4816            [doesmatch $f]} {
4817            if {$ty eq [mc "Author"]} {
4818                set isbold 2
4819                break
4820            }
4821            set isbold 1
4822        }
4823    }
4824    if {$isbold && [info exists iddrawn($id)]} {
4825        if {![ishighlighted $id]} {
4826            bolden $id mainfontbold
4827            if {$isbold > 1} {
4828                bolden_name $id mainfontbold
4829            }
4830        }
4831        if {$markingmatches} {
4832            markrowmatches $row $id
4833        }
4834    }
4835    set nhighlights($id) $isbold
4836}
4837
4838proc markrowmatches {row id} {
4839    global canv canv2 linehtag linentag commitinfo findloc
4840
4841    set headline [lindex $commitinfo($id) 0]
4842    set author [lindex $commitinfo($id) 1]
4843    $canv delete match$row
4844    $canv2 delete match$row
4845    if {$findloc eq [mc "All fields"] || $findloc eq [mc "Headline"]} {
4846        set m [findmatches $headline]
4847        if {$m ne {}} {
4848            markmatches $canv $row $headline $linehtag($id) $m \
4849                [$canv itemcget $linehtag($id) -font] $row
4850        }
4851    }
4852    if {$findloc eq [mc "All fields"] || $findloc eq [mc "Author"]} {
4853        set m [findmatches $author]
4854        if {$m ne {}} {
4855            markmatches $canv2 $row $author $linentag($id) $m \
4856                [$canv2 itemcget $linentag($id) -font] $row
4857        }
4858    }
4859}
4860
4861proc vrel_change {name ix op} {
4862    global highlight_related
4863
4864    rhighlight_none
4865    if {$highlight_related ne [mc "None"]} {
4866        run drawvisible
4867    }
4868}
4869
4870# prepare for testing whether commits are descendents or ancestors of a
4871proc rhighlight_sel {a} {
4872    global descendent desc_todo ancestor anc_todo
4873    global highlight_related
4874
4875    catch {unset descendent}
4876    set desc_todo [list $a]
4877    catch {unset ancestor}
4878    set anc_todo [list $a]
4879    if {$highlight_related ne [mc "None"]} {
4880        rhighlight_none
4881        run drawvisible
4882    }
4883}
4884
4885proc rhighlight_none {} {
4886    global rhighlights
4887
4888    catch {unset rhighlights}
4889    unbolden
4890}
4891
4892proc is_descendent {a} {
4893    global curview children descendent desc_todo
4894
4895    set v $curview
4896    set la [rowofcommit $a]
4897    set todo $desc_todo
4898    set leftover {}
4899    set done 0
4900    for {set i 0} {$i < [llength $todo]} {incr i} {
4901        set do [lindex $todo $i]
4902        if {[rowofcommit $do] < $la} {
4903            lappend leftover $do
4904            continue
4905        }
4906        foreach nk $children($v,$do) {
4907            if {![info exists descendent($nk)]} {
4908                set descendent($nk) 1
4909                lappend todo $nk
4910                if {$nk eq $a} {
4911                    set done 1
4912                }
4913            }
4914        }
4915        if {$done} {
4916            set desc_todo [concat $leftover [lrange $todo [expr {$i+1}] end]]
4917            return
4918        }
4919    }
4920    set descendent($a) 0
4921    set desc_todo $leftover
4922}
4923
4924proc is_ancestor {a} {
4925    global curview parents ancestor anc_todo
4926
4927    set v $curview
4928    set la [rowofcommit $a]
4929    set todo $anc_todo
4930    set leftover {}
4931    set done 0
4932    for {set i 0} {$i < [llength $todo]} {incr i} {
4933        set do [lindex $todo $i]
4934        if {![commitinview $do $v] || [rowofcommit $do] > $la} {
4935            lappend leftover $do
4936            continue
4937        }
4938        foreach np $parents($v,$do) {
4939            if {![info exists ancestor($np)]} {
4940                set ancestor($np) 1
4941                lappend todo $np
4942                if {$np eq $a} {
4943                    set done 1
4944                }
4945            }
4946        }
4947        if {$done} {
4948            set anc_todo [concat $leftover [lrange $todo [expr {$i+1}] end]]
4949            return
4950        }
4951    }
4952    set ancestor($a) 0
4953    set anc_todo $leftover
4954}
4955
4956proc askrelhighlight {row id} {
4957    global descendent highlight_related iddrawn rhighlights
4958    global selectedline ancestor
4959
4960    if {$selectedline eq {}} return
4961    set isbold 0
4962    if {$highlight_related eq [mc "Descendant"] ||
4963        $highlight_related eq [mc "Not descendant"]} {
4964        if {![info exists descendent($id)]} {
4965            is_descendent $id
4966        }
4967        if {$descendent($id) == ($highlight_related eq [mc "Descendant"])} {
4968            set isbold 1
4969        }
4970    } elseif {$highlight_related eq [mc "Ancestor"] ||
4971              $highlight_related eq [mc "Not ancestor"]} {
4972        if {![info exists ancestor($id)]} {
4973            is_ancestor $id
4974        }
4975        if {$ancestor($id) == ($highlight_related eq [mc "Ancestor"])} {
4976            set isbold 1
4977        }
4978    }
4979    if {[info exists iddrawn($id)]} {
4980        if {$isbold && ![ishighlighted $id]} {
4981            bolden $id mainfontbold
4982        }
4983    }
4984    set rhighlights($id) $isbold
4985}
4986
4987# Graph layout functions
4988
4989proc shortids {ids} {
4990    set res {}
4991    foreach id $ids {
4992        if {[llength $id] > 1} {
4993            lappend res [shortids $id]
4994        } elseif {[regexp {^[0-9a-f]{40}$} $id]} {
4995            lappend res [string range $id 0 7]
4996        } else {
4997            lappend res $id
4998        }
4999    }
5000    return $res
5001}
5002
5003proc ntimes {n o} {
5004    set ret {}
5005    set o [list $o]
5006    for {set mask 1} {$mask <= $n} {incr mask $mask} {
5007        if {($n & $mask) != 0} {
5008            set ret [concat $ret $o]
5009        }
5010        set o [concat $o $o]
5011    }
5012    return $ret
5013}
5014
5015proc ordertoken {id} {
5016    global ordertok curview varcid varcstart varctok curview parents children
5017    global nullid nullid2
5018
5019    if {[info exists ordertok($id)]} {
5020        return $ordertok($id)
5021    }
5022    set origid $id
5023    set todo {}
5024    while {1} {
5025        if {[info exists varcid($curview,$id)]} {
5026            set a $varcid($curview,$id)
5027            set p [lindex $varcstart($curview) $a]
5028        } else {
5029            set p [lindex $children($curview,$id) 0]
5030        }
5031        if {[info exists ordertok($p)]} {
5032            set tok $ordertok($p)
5033            break
5034        }
5035        set id [first_real_child $curview,$p]
5036        if {$id eq {}} {
5037            # it's a root
5038            set tok [lindex $varctok($curview) $varcid($curview,$p)]
5039            break
5040        }
5041        if {[llength $parents($curview,$id)] == 1} {
5042            lappend todo [list $p {}]
5043        } else {
5044            set j [lsearch -exact $parents($curview,$id) $p]
5045            if {$j < 0} {
5046                puts "oops didn't find [shortids $p] in parents of [shortids $id]"
5047            }
5048            lappend todo [list $p [strrep $j]]
5049        }
5050    }
5051    for {set i [llength $todo]} {[incr i -1] >= 0} {} {
5052        set p [lindex $todo $i 0]
5053        append tok [lindex $todo $i 1]
5054        set ordertok($p) $tok
5055    }
5056    set ordertok($origid) $tok
5057    return $tok
5058}
5059
5060# Work out where id should go in idlist so that order-token
5061# values increase from left to right
5062proc idcol {idlist id {i 0}} {
5063    set t [ordertoken $id]
5064    if {$i < 0} {
5065        set i 0
5066    }
5067    if {$i >= [llength $idlist] || $t < [ordertoken [lindex $idlist $i]]} {
5068        if {$i > [llength $idlist]} {
5069            set i [llength $idlist]
5070        }
5071        while {[incr i -1] >= 0 && $t < [ordertoken [lindex $idlist $i]]} {}
5072        incr i
5073    } else {
5074        if {$t > [ordertoken [lindex $idlist $i]]} {
5075            while {[incr i] < [llength $idlist] &&
5076                   $t >= [ordertoken [lindex $idlist $i]]} {}
5077        }
5078    }
5079    return $i
5080}
5081
5082proc initlayout {} {
5083    global rowidlist rowisopt rowfinal displayorder parentlist
5084    global numcommits canvxmax canv
5085    global nextcolor
5086    global colormap rowtextx
5087
5088    set numcommits 0
5089    set displayorder {}
5090    set parentlist {}
5091    set nextcolor 0
5092    set rowidlist {}
5093    set rowisopt {}
5094    set rowfinal {}
5095    set canvxmax [$canv cget -width]
5096    catch {unset colormap}
5097    catch {unset rowtextx}
5098    setcanvscroll
5099}
5100
5101proc setcanvscroll {} {
5102    global canv canv2 canv3 numcommits linespc canvxmax canvy0
5103    global lastscrollset lastscrollrows
5104
5105    set ymax [expr {$canvy0 + ($numcommits - 0.5) * $linespc + 2}]
5106    $canv conf -scrollregion [list 0 0 $canvxmax $ymax]
5107    $canv2 conf -scrollregion [list 0 0 0 $ymax]
5108    $canv3 conf -scrollregion [list 0 0 0 $ymax]
5109    set lastscrollset [clock clicks -milliseconds]
5110    set lastscrollrows $numcommits
5111}
5112
5113proc visiblerows {} {
5114    global canv numcommits linespc
5115
5116    set ymax [lindex [$canv cget -scrollregion] 3]
5117    if {$ymax eq {} || $ymax == 0} return
5118    set f [$canv yview]
5119    set y0 [expr {int([lindex $f 0] * $ymax)}]
5120    set r0 [expr {int(($y0 - 3) / $linespc) - 1}]
5121    if {$r0 < 0} {
5122        set r0 0
5123    }
5124    set y1 [expr {int([lindex $f 1] * $ymax)}]
5125    set r1 [expr {int(($y1 - 3) / $linespc) + 1}]
5126    if {$r1 >= $numcommits} {
5127        set r1 [expr {$numcommits - 1}]
5128    }
5129    return [list $r0 $r1]
5130}
5131
5132proc layoutmore {} {
5133    global commitidx viewcomplete curview
5134    global numcommits pending_select curview
5135    global lastscrollset lastscrollrows
5136
5137    if {$lastscrollrows < 100 || $viewcomplete($curview) ||
5138        [clock clicks -milliseconds] - $lastscrollset > 500} {
5139        setcanvscroll
5140    }
5141    if {[info exists pending_select] &&
5142        [commitinview $pending_select $curview]} {
5143        update
5144        selectline [rowofcommit $pending_select] 1
5145    }
5146    drawvisible
5147}
5148
5149# With path limiting, we mightn't get the actual HEAD commit,
5150# so ask git rev-list what is the first ancestor of HEAD that
5151# touches a file in the path limit.
5152proc get_viewmainhead {view} {
5153    global viewmainheadid vfilelimit viewinstances mainheadid
5154
5155    catch {
5156        set rfd [open [concat | git rev-list -1 $mainheadid \
5157                           -- $vfilelimit($view)] r]
5158        set j [reg_instance $rfd]
5159        lappend viewinstances($view) $j
5160        fconfigure $rfd -blocking 0
5161        filerun $rfd [list getviewhead $rfd $j $view]
5162        set viewmainheadid($curview) {}
5163    }
5164}
5165
5166# git rev-list should give us just 1 line to use as viewmainheadid($view)
5167proc getviewhead {fd inst view} {
5168    global viewmainheadid commfd curview viewinstances showlocalchanges
5169
5170    set id {}
5171    if {[gets $fd line] < 0} {
5172        if {![eof $fd]} {
5173            return 1
5174        }
5175    } elseif {[string length $line] == 40 && [string is xdigit $line]} {
5176        set id $line
5177    }
5178    set viewmainheadid($view) $id
5179    close $fd
5180    unset commfd($inst)
5181    set i [lsearch -exact $viewinstances($view) $inst]
5182    if {$i >= 0} {
5183        set viewinstances($view) [lreplace $viewinstances($view) $i $i]
5184    }
5185    if {$showlocalchanges && $id ne {} && $view == $curview} {
5186        doshowlocalchanges
5187    }
5188    return 0
5189}
5190
5191proc doshowlocalchanges {} {
5192    global curview viewmainheadid
5193
5194    if {$viewmainheadid($curview) eq {}} return
5195    if {[commitinview $viewmainheadid($curview) $curview]} {
5196        dodiffindex
5197    } else {
5198        interestedin $viewmainheadid($curview) dodiffindex
5199    }
5200}
5201
5202proc dohidelocalchanges {} {
5203    global nullid nullid2 lserial curview
5204
5205    if {[commitinview $nullid $curview]} {
5206        removefakerow $nullid
5207    }
5208    if {[commitinview $nullid2 $curview]} {
5209        removefakerow $nullid2
5210    }
5211    incr lserial
5212}
5213
5214# spawn off a process to do git diff-index --cached HEAD
5215proc dodiffindex {} {
5216    global lserial showlocalchanges vfilelimit curview
5217    global hasworktree git_version
5218
5219    if {!$showlocalchanges || !$hasworktree} return
5220    incr lserial
5221    if {[package vcompare $git_version "1.7.2"] >= 0} {
5222        set cmd "|git diff-index --cached --ignore-submodules=dirty HEAD"
5223    } else {
5224        set cmd "|git diff-index --cached HEAD"
5225    }
5226    if {$vfilelimit($curview) ne {}} {
5227        set cmd [concat $cmd -- $vfilelimit($curview)]
5228    }
5229    set fd [open $cmd r]
5230    fconfigure $fd -blocking 0
5231    set i [reg_instance $fd]
5232    filerun $fd [list readdiffindex $fd $lserial $i]
5233}
5234
5235proc readdiffindex {fd serial inst} {
5236    global viewmainheadid nullid nullid2 curview commitinfo commitdata lserial
5237    global vfilelimit
5238
5239    set isdiff 1
5240    if {[gets $fd line] < 0} {
5241        if {![eof $fd]} {
5242            return 1
5243        }
5244        set isdiff 0
5245    }
5246    # we only need to see one line and we don't really care what it says...
5247    stop_instance $inst
5248
5249    if {$serial != $lserial} {
5250        return 0
5251    }
5252
5253    # now see if there are any local changes not checked in to the index
5254    set cmd "|git diff-files"
5255    if {$vfilelimit($curview) ne {}} {
5256        set cmd [concat $cmd -- $vfilelimit($curview)]
5257    }
5258    set fd [open $cmd r]
5259    fconfigure $fd -blocking 0
5260    set i [reg_instance $fd]
5261    filerun $fd [list readdifffiles $fd $serial $i]
5262
5263    if {$isdiff && ![commitinview $nullid2 $curview]} {
5264        # add the line for the changes in the index to the graph
5265        set hl [mc "Local changes checked in to index but not committed"]
5266        set commitinfo($nullid2) [list  $hl {} {} {} {} "    $hl\n"]
5267        set commitdata($nullid2) "\n    $hl\n"
5268        if {[commitinview $nullid $curview]} {
5269            removefakerow $nullid
5270        }
5271        insertfakerow $nullid2 $viewmainheadid($curview)
5272    } elseif {!$isdiff && [commitinview $nullid2 $curview]} {
5273        if {[commitinview $nullid $curview]} {
5274            removefakerow $nullid
5275        }
5276        removefakerow $nullid2
5277    }
5278    return 0
5279}
5280
5281proc readdifffiles {fd serial inst} {
5282    global viewmainheadid nullid nullid2 curview
5283    global commitinfo commitdata lserial
5284
5285    set isdiff 1
5286    if {[gets $fd line] < 0} {
5287        if {![eof $fd]} {
5288            return 1
5289        }
5290        set isdiff 0
5291    }
5292    # we only need to see one line and we don't really care what it says...
5293    stop_instance $inst
5294
5295    if {$serial != $lserial} {
5296        return 0
5297    }
5298
5299    if {$isdiff && ![commitinview $nullid $curview]} {
5300        # add the line for the local diff to the graph
5301        set hl [mc "Local uncommitted changes, not checked in to index"]
5302        set commitinfo($nullid) [list  $hl {} {} {} {} "    $hl\n"]
5303        set commitdata($nullid) "\n    $hl\n"
5304        if {[commitinview $nullid2 $curview]} {
5305            set p $nullid2
5306        } else {
5307            set p $viewmainheadid($curview)
5308        }
5309        insertfakerow $nullid $p
5310    } elseif {!$isdiff && [commitinview $nullid $curview]} {
5311        removefakerow $nullid
5312    }
5313    return 0
5314}
5315
5316proc nextuse {id row} {
5317    global curview children
5318
5319    if {[info exists children($curview,$id)]} {
5320        foreach kid $children($curview,$id) {
5321            if {![commitinview $kid $curview]} {
5322                return -1
5323            }
5324            if {[rowofcommit $kid] > $row} {
5325                return [rowofcommit $kid]
5326            }
5327        }
5328    }
5329    if {[commitinview $id $curview]} {
5330        return [rowofcommit $id]
5331    }
5332    return -1
5333}
5334
5335proc prevuse {id row} {
5336    global curview children
5337
5338    set ret -1
5339    if {[info exists children($curview,$id)]} {
5340        foreach kid $children($curview,$id) {
5341            if {![commitinview $kid $curview]} break
5342            if {[rowofcommit $kid] < $row} {
5343                set ret [rowofcommit $kid]
5344            }
5345        }
5346    }
5347    return $ret
5348}
5349
5350proc make_idlist {row} {
5351    global displayorder parentlist uparrowlen downarrowlen mingaplen
5352    global commitidx curview children
5353
5354    set r [expr {$row - $mingaplen - $downarrowlen - 1}]
5355    if {$r < 0} {
5356        set r 0
5357    }
5358    set ra [expr {$row - $downarrowlen}]
5359    if {$ra < 0} {
5360        set ra 0
5361    }
5362    set rb [expr {$row + $uparrowlen}]
5363    if {$rb > $commitidx($curview)} {
5364        set rb $commitidx($curview)
5365    }
5366    make_disporder $r [expr {$rb + 1}]
5367    set ids {}
5368    for {} {$r < $ra} {incr r} {
5369        set nextid [lindex $displayorder [expr {$r + 1}]]
5370        foreach p [lindex $parentlist $r] {
5371            if {$p eq $nextid} continue
5372            set rn [nextuse $p $r]
5373            if {$rn >= $row &&
5374                $rn <= $r + $downarrowlen + $mingaplen + $uparrowlen} {
5375                lappend ids [list [ordertoken $p] $p]
5376            }
5377        }
5378    }
5379    for {} {$r < $row} {incr r} {
5380        set nextid [lindex $displayorder [expr {$r + 1}]]
5381        foreach p [lindex $parentlist $r] {
5382            if {$p eq $nextid} continue
5383            set rn [nextuse $p $r]
5384            if {$rn < 0 || $rn >= $row} {
5385                lappend ids [list [ordertoken $p] $p]
5386            }
5387        }
5388    }
5389    set id [lindex $displayorder $row]
5390    lappend ids [list [ordertoken $id] $id]
5391    while {$r < $rb} {
5392        foreach p [lindex $parentlist $r] {
5393            set firstkid [lindex $children($curview,$p) 0]
5394            if {[rowofcommit $firstkid] < $row} {
5395                lappend ids [list [ordertoken $p] $p]
5396            }
5397        }
5398        incr r
5399        set id [lindex $displayorder $r]
5400        if {$id ne {}} {
5401            set firstkid [lindex $children($curview,$id) 0]
5402            if {$firstkid ne {} && [rowofcommit $firstkid] < $row} {
5403                lappend ids [list [ordertoken $id] $id]
5404            }
5405        }
5406    }
5407    set idlist {}
5408    foreach idx [lsort -unique $ids] {
5409        lappend idlist [lindex $idx 1]
5410    }
5411    return $idlist
5412}
5413
5414proc rowsequal {a b} {
5415    while {[set i [lsearch -exact $a {}]] >= 0} {
5416        set a [lreplace $a $i $i]
5417    }
5418    while {[set i [lsearch -exact $b {}]] >= 0} {
5419        set b [lreplace $b $i $i]
5420    }
5421    return [expr {$a eq $b}]
5422}
5423
5424proc makeupline {id row rend col} {
5425    global rowidlist uparrowlen downarrowlen mingaplen
5426
5427    for {set r $rend} {1} {set r $rstart} {
5428        set rstart [prevuse $id $r]
5429        if {$rstart < 0} return
5430        if {$rstart < $row} break
5431    }
5432    if {$rstart + $uparrowlen + $mingaplen + $downarrowlen < $rend} {
5433        set rstart [expr {$rend - $uparrowlen - 1}]
5434    }
5435    for {set r $rstart} {[incr r] <= $row} {} {
5436        set idlist [lindex $rowidlist $r]
5437        if {$idlist ne {} && [lsearch -exact $idlist $id] < 0} {
5438            set col [idcol $idlist $id $col]
5439            lset rowidlist $r [linsert $idlist $col $id]
5440            changedrow $r
5441        }
5442    }
5443}
5444
5445proc layoutrows {row endrow} {
5446    global rowidlist rowisopt rowfinal displayorder
5447    global uparrowlen downarrowlen maxwidth mingaplen
5448    global children parentlist
5449    global commitidx viewcomplete curview
5450
5451    make_disporder [expr {$row - 1}] [expr {$endrow + $uparrowlen}]
5452    set idlist {}
5453    if {$row > 0} {
5454        set rm1 [expr {$row - 1}]
5455        foreach id [lindex $rowidlist $rm1] {
5456            if {$id ne {}} {
5457                lappend idlist $id
5458            }
5459        }
5460        set final [lindex $rowfinal $rm1]
5461    }
5462    for {} {$row < $endrow} {incr row} {
5463        set rm1 [expr {$row - 1}]
5464        if {$rm1 < 0 || $idlist eq {}} {
5465            set idlist [make_idlist $row]
5466            set final 1
5467        } else {
5468            set id [lindex $displayorder $rm1]
5469            set col [lsearch -exact $idlist $id]
5470            set idlist [lreplace $idlist $col $col]
5471            foreach p [lindex $parentlist $rm1] {
5472                if {[lsearch -exact $idlist $p] < 0} {
5473                    set col [idcol $idlist $p $col]
5474                    set idlist [linsert $idlist $col $p]
5475                    # if not the first child, we have to insert a line going up
5476                    if {$id ne [lindex $children($curview,$p) 0]} {
5477                        makeupline $p $rm1 $row $col
5478                    }
5479                }
5480            }
5481            set id [lindex $displayorder $row]
5482            if {$row > $downarrowlen} {
5483                set termrow [expr {$row - $downarrowlen - 1}]
5484                foreach p [lindex $parentlist $termrow] {
5485                    set i [lsearch -exact $idlist $p]
5486                    if {$i < 0} continue
5487                    set nr [nextuse $p $termrow]
5488                    if {$nr < 0 || $nr >= $row + $mingaplen + $uparrowlen} {
5489                        set idlist [lreplace $idlist $i $i]
5490                    }
5491                }
5492            }
5493            set col [lsearch -exact $idlist $id]
5494            if {$col < 0} {
5495                set col [idcol $idlist $id]
5496                set idlist [linsert $idlist $col $id]
5497                if {$children($curview,$id) ne {}} {
5498                    makeupline $id $rm1 $row $col
5499                }
5500            }
5501            set r [expr {$row + $uparrowlen - 1}]
5502            if {$r < $commitidx($curview)} {
5503                set x $col
5504                foreach p [lindex $parentlist $r] {
5505                    if {[lsearch -exact $idlist $p] >= 0} continue
5506                    set fk [lindex $children($curview,$p) 0]
5507                    if {[rowofcommit $fk] < $row} {
5508                        set x [idcol $idlist $p $x]
5509                        set idlist [linsert $idlist $x $p]
5510                    }
5511                }
5512                if {[incr r] < $commitidx($curview)} {
5513                    set p [lindex $displayorder $r]
5514                    if {[lsearch -exact $idlist $p] < 0} {
5515                        set fk [lindex $children($curview,$p) 0]
5516                        if {$fk ne {} && [rowofcommit $fk] < $row} {
5517                            set x [idcol $idlist $p $x]
5518                            set idlist [linsert $idlist $x $p]
5519                        }
5520                    }
5521                }
5522            }
5523        }
5524        if {$final && !$viewcomplete($curview) &&
5525            $row + $uparrowlen + $mingaplen + $downarrowlen
5526                >= $commitidx($curview)} {
5527            set final 0
5528        }
5529        set l [llength $rowidlist]
5530        if {$row == $l} {
5531            lappend rowidlist $idlist
5532            lappend rowisopt 0
5533            lappend rowfinal $final
5534        } elseif {$row < $l} {
5535            if {![rowsequal $idlist [lindex $rowidlist $row]]} {
5536                lset rowidlist $row $idlist
5537                changedrow $row
5538            }
5539            lset rowfinal $row $final
5540        } else {
5541            set pad [ntimes [expr {$row - $l}] {}]
5542            set rowidlist [concat $rowidlist $pad]
5543            lappend rowidlist $idlist
5544            set rowfinal [concat $rowfinal $pad]
5545            lappend rowfinal $final
5546            set rowisopt [concat $rowisopt [ntimes [expr {$row - $l + 1}] 0]]
5547        }
5548    }
5549    return $row
5550}
5551
5552proc changedrow {row} {
5553    global displayorder iddrawn rowisopt need_redisplay
5554
5555    set l [llength $rowisopt]
5556    if {$row < $l} {
5557        lset rowisopt $row 0
5558        if {$row + 1 < $l} {
5559            lset rowisopt [expr {$row + 1}] 0
5560            if {$row + 2 < $l} {
5561                lset rowisopt [expr {$row + 2}] 0
5562            }
5563        }
5564    }
5565    set id [lindex $displayorder $row]
5566    if {[info exists iddrawn($id)]} {
5567        set need_redisplay 1
5568    }
5569}
5570
5571proc insert_pad {row col npad} {
5572    global rowidlist
5573
5574    set pad [ntimes $npad {}]
5575    set idlist [lindex $rowidlist $row]
5576    set bef [lrange $idlist 0 [expr {$col - 1}]]
5577    set aft [lrange $idlist $col end]
5578    set i [lsearch -exact $aft {}]
5579    if {$i > 0} {
5580        set aft [lreplace $aft $i $i]
5581    }
5582    lset rowidlist $row [concat $bef $pad $aft]
5583    changedrow $row
5584}
5585
5586proc optimize_rows {row col endrow} {
5587    global rowidlist rowisopt displayorder curview children
5588
5589    if {$row < 1} {
5590        set row 1
5591    }
5592    for {} {$row < $endrow} {incr row; set col 0} {
5593        if {[lindex $rowisopt $row]} continue
5594        set haspad 0
5595        set y0 [expr {$row - 1}]
5596        set ym [expr {$row - 2}]
5597        set idlist [lindex $rowidlist $row]
5598        set previdlist [lindex $rowidlist $y0]
5599        if {$idlist eq {} || $previdlist eq {}} continue
5600        if {$ym >= 0} {
5601            set pprevidlist [lindex $rowidlist $ym]
5602            if {$pprevidlist eq {}} continue
5603        } else {
5604            set pprevidlist {}
5605        }
5606        set x0 -1
5607        set xm -1
5608        for {} {$col < [llength $idlist]} {incr col} {
5609            set id [lindex $idlist $col]
5610            if {[lindex $previdlist $col] eq $id} continue
5611            if {$id eq {}} {
5612                set haspad 1
5613                continue
5614            }
5615            set x0 [lsearch -exact $previdlist $id]
5616            if {$x0 < 0} continue
5617            set z [expr {$x0 - $col}]
5618            set isarrow 0
5619            set z0 {}
5620            if {$ym >= 0} {
5621                set xm [lsearch -exact $pprevidlist $id]
5622                if {$xm >= 0} {
5623                    set z0 [expr {$xm - $x0}]
5624                }
5625            }
5626            if {$z0 eq {}} {
5627                # if row y0 is the first child of $id then it's not an arrow
5628                if {[lindex $children($curview,$id) 0] ne
5629                    [lindex $displayorder $y0]} {
5630                    set isarrow 1
5631                }
5632            }
5633            if {!$isarrow && $id ne [lindex $displayorder $row] &&
5634                [lsearch -exact [lindex $rowidlist [expr {$row+1}]] $id] < 0} {
5635                set isarrow 1
5636            }
5637            # Looking at lines from this row to the previous row,
5638            # make them go straight up if they end in an arrow on
5639            # the previous row; otherwise make them go straight up
5640            # or at 45 degrees.
5641            if {$z < -1 || ($z < 0 && $isarrow)} {
5642                # Line currently goes left too much;
5643                # insert pads in the previous row, then optimize it
5644                set npad [expr {-1 - $z + $isarrow}]
5645                insert_pad $y0 $x0 $npad
5646                if {$y0 > 0} {
5647                    optimize_rows $y0 $x0 $row
5648                }
5649                set previdlist [lindex $rowidlist $y0]
5650                set x0 [lsearch -exact $previdlist $id]
5651                set z [expr {$x0 - $col}]
5652                if {$z0 ne {}} {
5653                    set pprevidlist [lindex $rowidlist $ym]
5654                    set xm [lsearch -exact $pprevidlist $id]
5655                    set z0 [expr {$xm - $x0}]
5656                }
5657            } elseif {$z > 1 || ($z > 0 && $isarrow)} {
5658                # Line currently goes right too much;
5659                # insert pads in this line
5660                set npad [expr {$z - 1 + $isarrow}]
5661                insert_pad $row $col $npad
5662                set idlist [lindex $rowidlist $row]
5663                incr col $npad
5664                set z [expr {$x0 - $col}]
5665                set haspad 1
5666            }
5667            if {$z0 eq {} && !$isarrow && $ym >= 0} {
5668                # this line links to its first child on row $row-2
5669                set id [lindex $displayorder $ym]
5670                set xc [lsearch -exact $pprevidlist $id]
5671                if {$xc >= 0} {
5672                    set z0 [expr {$xc - $x0}]
5673                }
5674            }
5675            # avoid lines jigging left then immediately right
5676            if {$z0 ne {} && $z < 0 && $z0 > 0} {
5677                insert_pad $y0 $x0 1
5678                incr x0
5679                optimize_rows $y0 $x0 $row
5680                set previdlist [lindex $rowidlist $y0]
5681            }
5682        }
5683        if {!$haspad} {
5684            # Find the first column that doesn't have a line going right
5685            for {set col [llength $idlist]} {[incr col -1] >= 0} {} {
5686                set id [lindex $idlist $col]
5687                if {$id eq {}} break
5688                set x0 [lsearch -exact $previdlist $id]
5689                if {$x0 < 0} {
5690                    # check if this is the link to the first child
5691                    set kid [lindex $displayorder $y0]
5692                    if {[lindex $children($curview,$id) 0] eq $kid} {
5693                        # it is, work out offset to child
5694                        set x0 [lsearch -exact $previdlist $kid]
5695                    }
5696                }
5697                if {$x0 <= $col} break
5698            }
5699            # Insert a pad at that column as long as it has a line and
5700            # isn't the last column
5701            if {$x0 >= 0 && [incr col] < [llength $idlist]} {
5702                set idlist [linsert $idlist $col {}]
5703                lset rowidlist $row $idlist
5704                changedrow $row
5705            }
5706        }
5707    }
5708}
5709
5710proc xc {row col} {
5711    global canvx0 linespc
5712    return [expr {$canvx0 + $col * $linespc}]
5713}
5714
5715proc yc {row} {
5716    global canvy0 linespc
5717    return [expr {$canvy0 + $row * $linespc}]
5718}
5719
5720proc linewidth {id} {
5721    global thickerline lthickness
5722
5723    set wid $lthickness
5724    if {[info exists thickerline] && $id eq $thickerline} {
5725        set wid [expr {2 * $lthickness}]
5726    }
5727    return $wid
5728}
5729
5730proc rowranges {id} {
5731    global curview children uparrowlen downarrowlen
5732    global rowidlist
5733
5734    set kids $children($curview,$id)
5735    if {$kids eq {}} {
5736        return {}
5737    }
5738    set ret {}
5739    lappend kids $id
5740    foreach child $kids {
5741        if {![commitinview $child $curview]} break
5742        set row [rowofcommit $child]
5743        if {![info exists prev]} {
5744            lappend ret [expr {$row + 1}]
5745        } else {
5746            if {$row <= $prevrow} {
5747                puts "oops children of [shortids $id] out of order [shortids $child] $row <= [shortids $prev] $prevrow"
5748            }
5749            # see if the line extends the whole way from prevrow to row
5750            if {$row > $prevrow + $uparrowlen + $downarrowlen &&
5751                [lsearch -exact [lindex $rowidlist \
5752                            [expr {int(($row + $prevrow) / 2)}]] $id] < 0} {
5753                # it doesn't, see where it ends
5754                set r [expr {$prevrow + $downarrowlen}]
5755                if {[lsearch -exact [lindex $rowidlist $r] $id] < 0} {
5756                    while {[incr r -1] > $prevrow &&
5757                           [lsearch -exact [lindex $rowidlist $r] $id] < 0} {}
5758                } else {
5759                    while {[incr r] <= $row &&
5760                           [lsearch -exact [lindex $rowidlist $r] $id] >= 0} {}
5761                    incr r -1
5762                }
5763                lappend ret $r
5764                # see where it starts up again
5765                set r [expr {$row - $uparrowlen}]
5766                if {[lsearch -exact [lindex $rowidlist $r] $id] < 0} {
5767                    while {[incr r] < $row &&
5768                           [lsearch -exact [lindex $rowidlist $r] $id] < 0} {}
5769                } else {
5770                    while {[incr r -1] >= $prevrow &&
5771                           [lsearch -exact [lindex $rowidlist $r] $id] >= 0} {}
5772                    incr r
5773                }
5774                lappend ret $r
5775            }
5776        }
5777        if {$child eq $id} {
5778            lappend ret $row
5779        }
5780        set prev $child
5781        set prevrow $row
5782    }
5783    return $ret
5784}
5785
5786proc drawlineseg {id row endrow arrowlow} {
5787    global rowidlist displayorder iddrawn linesegs
5788    global canv colormap linespc curview maxlinelen parentlist
5789
5790    set cols [list [lsearch -exact [lindex $rowidlist $row] $id]]
5791    set le [expr {$row + 1}]
5792    set arrowhigh 1
5793    while {1} {
5794        set c [lsearch -exact [lindex $rowidlist $le] $id]
5795        if {$c < 0} {
5796            incr le -1
5797            break
5798        }
5799        lappend cols $c
5800        set x [lindex $displayorder $le]
5801        if {$x eq $id} {
5802            set arrowhigh 0
5803            break
5804        }
5805        if {[info exists iddrawn($x)] || $le == $endrow} {
5806            set c [lsearch -exact [lindex $rowidlist [expr {$le+1}]] $id]
5807            if {$c >= 0} {
5808                lappend cols $c
5809                set arrowhigh 0
5810            }
5811            break
5812        }
5813        incr le
5814    }
5815    if {$le <= $row} {
5816        return $row
5817    }
5818
5819    set lines {}
5820    set i 0
5821    set joinhigh 0
5822    if {[info exists linesegs($id)]} {
5823        set lines $linesegs($id)
5824        foreach li $lines {
5825            set r0 [lindex $li 0]
5826            if {$r0 > $row} {
5827                if {$r0 == $le && [lindex $li 1] - $row <= $maxlinelen} {
5828                    set joinhigh 1
5829                }
5830                break
5831            }
5832            incr i
5833        }
5834    }
5835    set joinlow 0
5836    if {$i > 0} {
5837        set li [lindex $lines [expr {$i-1}]]
5838        set r1 [lindex $li 1]
5839        if {$r1 == $row && $le - [lindex $li 0] <= $maxlinelen} {
5840            set joinlow 1
5841        }
5842    }
5843
5844    set x [lindex $cols [expr {$le - $row}]]
5845    set xp [lindex $cols [expr {$le - 1 - $row}]]
5846    set dir [expr {$xp - $x}]
5847    if {$joinhigh} {
5848        set ith [lindex $lines $i 2]
5849        set coords [$canv coords $ith]
5850        set ah [$canv itemcget $ith -arrow]
5851        set arrowhigh [expr {$ah eq "first" || $ah eq "both"}]
5852        set x2 [lindex $cols [expr {$le + 1 - $row}]]
5853        if {$x2 ne {} && $x - $x2 == $dir} {
5854            set coords [lrange $coords 0 end-2]
5855        }
5856    } else {
5857        set coords [list [xc $le $x] [yc $le]]
5858    }
5859    if {$joinlow} {
5860        set itl [lindex $lines [expr {$i-1}] 2]
5861        set al [$canv itemcget $itl -arrow]
5862        set arrowlow [expr {$al eq "last" || $al eq "both"}]
5863    } elseif {$arrowlow} {
5864        if {[lsearch -exact [lindex $rowidlist [expr {$row-1}]] $id] >= 0 ||
5865            [lsearch -exact [lindex $parentlist [expr {$row-1}]] $id] >= 0} {
5866            set arrowlow 0
5867        }
5868    }
5869    set arrow [lindex {none first last both} [expr {$arrowhigh + 2*$arrowlow}]]
5870    for {set y $le} {[incr y -1] > $row} {} {
5871        set x $xp
5872        set xp [lindex $cols [expr {$y - 1 - $row}]]
5873        set ndir [expr {$xp - $x}]
5874        if {$dir != $ndir || $xp < 0} {
5875            lappend coords [xc $y $x] [yc $y]
5876        }
5877        set dir $ndir
5878    }
5879    if {!$joinlow} {
5880        if {$xp < 0} {
5881            # join parent line to first child
5882            set ch [lindex $displayorder $row]
5883            set xc [lsearch -exact [lindex $rowidlist $row] $ch]
5884            if {$xc < 0} {
5885                puts "oops: drawlineseg: child $ch not on row $row"
5886            } elseif {$xc != $x} {
5887                if {($arrowhigh && $le == $row + 1) || $dir == 0} {
5888                    set d [expr {int(0.5 * $linespc)}]
5889                    set x1 [xc $row $x]
5890                    if {$xc < $x} {
5891                        set x2 [expr {$x1 - $d}]
5892                    } else {
5893                        set x2 [expr {$x1 + $d}]
5894                    }
5895                    set y2 [yc $row]
5896                    set y1 [expr {$y2 + $d}]
5897                    lappend coords $x1 $y1 $x2 $y2
5898                } elseif {$xc < $x - 1} {
5899                    lappend coords [xc $row [expr {$x-1}]] [yc $row]
5900                } elseif {$xc > $x + 1} {
5901                    lappend coords [xc $row [expr {$x+1}]] [yc $row]
5902                }
5903                set x $xc
5904            }
5905            lappend coords [xc $row $x] [yc $row]
5906        } else {
5907            set xn [xc $row $xp]
5908            set yn [yc $row]
5909            lappend coords $xn $yn
5910        }
5911        if {!$joinhigh} {
5912            assigncolor $id
5913            set t [$canv create line $coords -width [linewidth $id] \
5914                       -fill $colormap($id) -tags lines.$id -arrow $arrow]
5915            $canv lower $t
5916            bindline $t $id
5917            set lines [linsert $lines $i [list $row $le $t]]
5918        } else {
5919            $canv coords $ith $coords
5920            if {$arrow ne $ah} {
5921                $canv itemconf $ith -arrow $arrow
5922            }
5923            lset lines $i 0 $row
5924        }
5925    } else {
5926        set xo [lsearch -exact [lindex $rowidlist [expr {$row - 1}]] $id]
5927        set ndir [expr {$xo - $xp}]
5928        set clow [$canv coords $itl]
5929        if {$dir == $ndir} {
5930            set clow [lrange $clow 2 end]
5931        }
5932        set coords [concat $coords $clow]
5933        if {!$joinhigh} {
5934            lset lines [expr {$i-1}] 1 $le
5935        } else {
5936            # coalesce two pieces
5937            $canv delete $ith
5938            set b [lindex $lines [expr {$i-1}] 0]
5939            set e [lindex $lines $i 1]
5940            set lines [lreplace $lines [expr {$i-1}] $i [list $b $e $itl]]
5941        }
5942        $canv coords $itl $coords
5943        if {$arrow ne $al} {
5944            $canv itemconf $itl -arrow $arrow
5945        }
5946    }
5947
5948    set linesegs($id) $lines
5949    return $le
5950}
5951
5952proc drawparentlinks {id row} {
5953    global rowidlist canv colormap curview parentlist
5954    global idpos linespc
5955
5956    set rowids [lindex $rowidlist $row]
5957    set col [lsearch -exact $rowids $id]
5958    if {$col < 0} return
5959    set olds [lindex $parentlist $row]
5960    set row2 [expr {$row + 1}]
5961    set x [xc $row $col]
5962    set y [yc $row]
5963    set y2 [yc $row2]
5964    set d [expr {int(0.5 * $linespc)}]
5965    set ymid [expr {$y + $d}]
5966    set ids [lindex $rowidlist $row2]
5967    # rmx = right-most X coord used
5968    set rmx 0
5969    foreach p $olds {
5970        set i [lsearch -exact $ids $p]
5971        if {$i < 0} {
5972            puts "oops, parent $p of $id not in list"
5973            continue
5974        }
5975        set x2 [xc $row2 $i]
5976        if {$x2 > $rmx} {
5977            set rmx $x2
5978        }
5979        set j [lsearch -exact $rowids $p]
5980        if {$j < 0} {
5981            # drawlineseg will do this one for us
5982            continue
5983        }
5984        assigncolor $p
5985        # should handle duplicated parents here...
5986        set coords [list $x $y]
5987        if {$i != $col} {
5988            # if attaching to a vertical segment, draw a smaller
5989            # slant for visual distinctness
5990            if {$i == $j} {
5991                if {$i < $col} {
5992                    lappend coords [expr {$x2 + $d}] $y $x2 $ymid
5993                } else {
5994                    lappend coords [expr {$x2 - $d}] $y $x2 $ymid
5995                }
5996            } elseif {$i < $col && $i < $j} {
5997                # segment slants towards us already
5998                lappend coords [xc $row $j] $y
5999            } else {
6000                if {$i < $col - 1} {
6001                    lappend coords [expr {$x2 + $linespc}] $y
6002                } elseif {$i > $col + 1} {
6003                    lappend coords [expr {$x2 - $linespc}] $y
6004                }
6005                lappend coords $x2 $y2
6006            }
6007        } else {
6008            lappend coords $x2 $y2
6009        }
6010        set t [$canv create line $coords -width [linewidth $p] \
6011                   -fill $colormap($p) -tags lines.$p]
6012        $canv lower $t
6013        bindline $t $p
6014    }
6015    if {$rmx > [lindex $idpos($id) 1]} {
6016        lset idpos($id) 1 $rmx
6017        redrawtags $id
6018    }
6019}
6020
6021proc drawlines {id} {
6022    global canv
6023
6024    $canv itemconf lines.$id -width [linewidth $id]
6025}
6026
6027proc drawcmittext {id row col} {
6028    global linespc canv canv2 canv3 fgcolor curview
6029    global cmitlisted commitinfo rowidlist parentlist
6030    global rowtextx idpos idtags idheads idotherrefs
6031    global linehtag linentag linedtag selectedline
6032    global canvxmax boldids boldnameids fgcolor markedid
6033    global mainheadid nullid nullid2 circleitem circlecolors ctxbut
6034    global mainheadcirclecolor workingfilescirclecolor indexcirclecolor
6035    global circleoutlinecolor
6036
6037    # listed is 0 for boundary, 1 for normal, 2 for negative, 3 for left, 4 for right
6038    set listed $cmitlisted($curview,$id)
6039    if {$id eq $nullid} {
6040        set ofill $workingfilescirclecolor
6041    } elseif {$id eq $nullid2} {
6042        set ofill $indexcirclecolor
6043    } elseif {$id eq $mainheadid} {
6044        set ofill $mainheadcirclecolor
6045    } else {
6046        set ofill [lindex $circlecolors $listed]
6047    }
6048    set x [xc $row $col]
6049    set y [yc $row]
6050    set orad [expr {$linespc / 3}]
6051    if {$listed <= 2} {
6052        set t [$canv create oval [expr {$x - $orad}] [expr {$y - $orad}] \
6053                   [expr {$x + $orad - 1}] [expr {$y + $orad - 1}] \
6054                   -fill $ofill -outline $circleoutlinecolor -width 1 -tags circle]
6055    } elseif {$listed == 3} {
6056        # triangle pointing left for left-side commits
6057        set t [$canv create polygon \
6058                   [expr {$x - $orad}] $y \
6059                   [expr {$x + $orad - 1}] [expr {$y - $orad}] \
6060                   [expr {$x + $orad - 1}] [expr {$y + $orad - 1}] \
6061                   -fill $ofill -outline $circleoutlinecolor -width 1 -tags circle]
6062    } else {
6063        # triangle pointing right for right-side commits
6064        set t [$canv create polygon \
6065                   [expr {$x + $orad - 1}] $y \
6066                   [expr {$x - $orad}] [expr {$y - $orad}] \
6067                   [expr {$x - $orad}] [expr {$y + $orad - 1}] \
6068                   -fill $ofill -outline $circleoutlinecolor -width 1 -tags circle]
6069    }
6070    set circleitem($row) $t
6071    $canv raise $t
6072    $canv bind $t <1> {selcanvline {} %x %y}
6073    set rmx [llength [lindex $rowidlist $row]]
6074    set olds [lindex $parentlist $row]
6075    if {$olds ne {}} {
6076        set nextids [lindex $rowidlist [expr {$row + 1}]]
6077        foreach p $olds {
6078            set i [lsearch -exact $nextids $p]
6079            if {$i > $rmx} {
6080                set rmx $i
6081            }
6082        }
6083    }
6084    set xt [xc $row $rmx]
6085    set rowtextx($row) $xt
6086    set idpos($id) [list $x $xt $y]
6087    if {[info exists idtags($id)] || [info exists idheads($id)]
6088        || [info exists idotherrefs($id)]} {
6089        set xt [drawtags $id $x $xt $y]
6090    }
6091    if {[lindex $commitinfo($id) 6] > 0} {
6092        set xt [drawnotesign $xt $y]
6093    }
6094    set headline [lindex $commitinfo($id) 0]
6095    set name [lindex $commitinfo($id) 1]
6096    set date [lindex $commitinfo($id) 2]
6097    set date [formatdate $date]
6098    set font mainfont
6099    set nfont mainfont
6100    set isbold [ishighlighted $id]
6101    if {$isbold > 0} {
6102        lappend boldids $id
6103        set font mainfontbold
6104        if {$isbold > 1} {
6105            lappend boldnameids $id
6106            set nfont mainfontbold
6107        }
6108    }
6109    set linehtag($id) [$canv create text $xt $y -anchor w -fill $fgcolor \
6110                           -text $headline -font $font -tags text]
6111    $canv bind $linehtag($id) $ctxbut "rowmenu %X %Y $id"
6112    set linentag($id) [$canv2 create text 3 $y -anchor w -fill $fgcolor \
6113                           -text $name -font $nfont -tags text]
6114    set linedtag($id) [$canv3 create text 3 $y -anchor w -fill $fgcolor \
6115                           -text $date -font mainfont -tags text]
6116    if {$selectedline == $row} {
6117        make_secsel $id
6118    }
6119    if {[info exists markedid] && $markedid eq $id} {
6120        make_idmark $id
6121    }
6122    set xr [expr {$xt + [font measure $font $headline]}]
6123    if {$xr > $canvxmax} {
6124        set canvxmax $xr
6125        setcanvscroll
6126    }
6127}
6128
6129proc drawcmitrow {row} {
6130    global displayorder rowidlist nrows_drawn
6131    global iddrawn markingmatches
6132    global commitinfo numcommits
6133    global filehighlight fhighlights findpattern nhighlights
6134    global hlview vhighlights
6135    global highlight_related rhighlights
6136
6137    if {$row >= $numcommits} return
6138
6139    set id [lindex $displayorder $row]
6140    if {[info exists hlview] && ![info exists vhighlights($id)]} {
6141        askvhighlight $row $id
6142    }
6143    if {[info exists filehighlight] && ![info exists fhighlights($id)]} {
6144        askfilehighlight $row $id
6145    }
6146    if {$findpattern ne {} && ![info exists nhighlights($id)]} {
6147        askfindhighlight $row $id
6148    }
6149    if {$highlight_related ne [mc "None"] && ![info exists rhighlights($id)]} {
6150        askrelhighlight $row $id
6151    }
6152    if {![info exists iddrawn($id)]} {
6153        set col [lsearch -exact [lindex $rowidlist $row] $id]
6154        if {$col < 0} {
6155            puts "oops, row $row id $id not in list"
6156            return
6157        }
6158        if {![info exists commitinfo($id)]} {
6159            getcommit $id
6160        }
6161        assigncolor $id
6162        drawcmittext $id $row $col
6163        set iddrawn($id) 1
6164        incr nrows_drawn
6165    }
6166    if {$markingmatches} {
6167        markrowmatches $row $id
6168    }
6169}
6170
6171proc drawcommits {row {endrow {}}} {
6172    global numcommits iddrawn displayorder curview need_redisplay
6173    global parentlist rowidlist rowfinal uparrowlen downarrowlen nrows_drawn
6174
6175    if {$row < 0} {
6176        set row 0
6177    }
6178    if {$endrow eq {}} {
6179        set endrow $row
6180    }
6181    if {$endrow >= $numcommits} {
6182        set endrow [expr {$numcommits - 1}]
6183    }
6184
6185    set rl1 [expr {$row - $downarrowlen - 3}]
6186    if {$rl1 < 0} {
6187        set rl1 0
6188    }
6189    set ro1 [expr {$row - 3}]
6190    if {$ro1 < 0} {
6191        set ro1 0
6192    }
6193    set r2 [expr {$endrow + $uparrowlen + 3}]
6194    if {$r2 > $numcommits} {
6195        set r2 $numcommits
6196    }
6197    for {set r $rl1} {$r < $r2} {incr r} {
6198        if {[lindex $rowidlist $r] ne {} && [lindex $rowfinal $r]} {
6199            if {$rl1 < $r} {
6200                layoutrows $rl1 $r
6201            }
6202            set rl1 [expr {$r + 1}]
6203        }
6204    }
6205    if {$rl1 < $r} {
6206        layoutrows $rl1 $r
6207    }
6208    optimize_rows $ro1 0 $r2
6209    if {$need_redisplay || $nrows_drawn > 2000} {
6210        clear_display
6211    }
6212
6213    # make the lines join to already-drawn rows either side
6214    set r [expr {$row - 1}]
6215    if {$r < 0 || ![info exists iddrawn([lindex $displayorder $r])]} {
6216        set r $row
6217    }
6218    set er [expr {$endrow + 1}]
6219    if {$er >= $numcommits ||
6220        ![info exists iddrawn([lindex $displayorder $er])]} {
6221        set er $endrow
6222    }
6223    for {} {$r <= $er} {incr r} {
6224        set id [lindex $displayorder $r]
6225        set wasdrawn [info exists iddrawn($id)]
6226        drawcmitrow $r
6227        if {$r == $er} break
6228        set nextid [lindex $displayorder [expr {$r + 1}]]
6229        if {$wasdrawn && [info exists iddrawn($nextid)]} continue
6230        drawparentlinks $id $r
6231
6232        set rowids [lindex $rowidlist $r]
6233        foreach lid $rowids {
6234            if {$lid eq {}} continue
6235            if {[info exists lineend($lid)] && $lineend($lid) > $r} continue
6236            if {$lid eq $id} {
6237                # see if this is the first child of any of its parents
6238                foreach p [lindex $parentlist $r] {
6239                    if {[lsearch -exact $rowids $p] < 0} {
6240                        # make this line extend up to the child
6241                        set lineend($p) [drawlineseg $p $r $er 0]
6242                    }
6243                }
6244            } else {
6245                set lineend($lid) [drawlineseg $lid $r $er 1]
6246            }
6247        }
6248    }
6249}
6250
6251proc undolayout {row} {
6252    global uparrowlen mingaplen downarrowlen
6253    global rowidlist rowisopt rowfinal need_redisplay
6254
6255    set r [expr {$row - ($uparrowlen + $mingaplen + $downarrowlen)}]
6256    if {$r < 0} {
6257        set r 0
6258    }
6259    if {[llength $rowidlist] > $r} {
6260        incr r -1
6261        set rowidlist [lrange $rowidlist 0 $r]
6262        set rowfinal [lrange $rowfinal 0 $r]
6263        set rowisopt [lrange $rowisopt 0 $r]
6264        set need_redisplay 1
6265        run drawvisible
6266    }
6267}
6268
6269proc drawvisible {} {
6270    global canv linespc curview vrowmod selectedline targetrow targetid
6271    global need_redisplay cscroll numcommits
6272
6273    set fs [$canv yview]
6274    set ymax [lindex [$canv cget -scrollregion] 3]
6275    if {$ymax eq {} || $ymax == 0 || $numcommits == 0} return
6276    set f0 [lindex $fs 0]
6277    set f1 [lindex $fs 1]
6278    set y0 [expr {int($f0 * $ymax)}]
6279    set y1 [expr {int($f1 * $ymax)}]
6280
6281    if {[info exists targetid]} {
6282        if {[commitinview $targetid $curview]} {
6283            set r [rowofcommit $targetid]
6284            if {$r != $targetrow} {
6285                # Fix up the scrollregion and change the scrolling position
6286                # now that our target row has moved.
6287                set diff [expr {($r - $targetrow) * $linespc}]
6288                set targetrow $r
6289                setcanvscroll
6290                set ymax [lindex [$canv cget -scrollregion] 3]
6291                incr y0 $diff
6292                incr y1 $diff
6293                set f0 [expr {$y0 / $ymax}]
6294                set f1 [expr {$y1 / $ymax}]
6295                allcanvs yview moveto $f0
6296                $cscroll set $f0 $f1
6297                set need_redisplay 1
6298            }
6299        } else {
6300            unset targetid
6301        }
6302    }
6303
6304    set row [expr {int(($y0 - 3) / $linespc) - 1}]
6305    set endrow [expr {int(($y1 - 3) / $linespc) + 1}]
6306    if {$endrow >= $vrowmod($curview)} {
6307        update_arcrows $curview
6308    }
6309    if {$selectedline ne {} &&
6310        $row <= $selectedline && $selectedline <= $endrow} {
6311        set targetrow $selectedline
6312    } elseif {[info exists targetid]} {
6313        set targetrow [expr {int(($row + $endrow) / 2)}]
6314    }
6315    if {[info exists targetrow]} {
6316        if {$targetrow >= $numcommits} {
6317            set targetrow [expr {$numcommits - 1}]
6318        }
6319        set targetid [commitonrow $targetrow]
6320    }
6321    drawcommits $row $endrow
6322}
6323
6324proc clear_display {} {
6325    global iddrawn linesegs need_redisplay nrows_drawn
6326    global vhighlights fhighlights nhighlights rhighlights
6327    global linehtag linentag linedtag boldids boldnameids
6328
6329    allcanvs delete all
6330    catch {unset iddrawn}
6331    catch {unset linesegs}
6332    catch {unset linehtag}
6333    catch {unset linentag}
6334    catch {unset linedtag}
6335    set boldids {}
6336    set boldnameids {}
6337    catch {unset vhighlights}
6338    catch {unset fhighlights}
6339    catch {unset nhighlights}
6340    catch {unset rhighlights}
6341    set need_redisplay 0
6342    set nrows_drawn 0
6343}
6344
6345proc findcrossings {id} {
6346    global rowidlist parentlist numcommits displayorder
6347
6348    set cross {}
6349    set ccross {}
6350    foreach {s e} [rowranges $id] {
6351        if {$e >= $numcommits} {
6352            set e [expr {$numcommits - 1}]
6353        }
6354        if {$e <= $s} continue
6355        for {set row $e} {[incr row -1] >= $s} {} {
6356            set x [lsearch -exact [lindex $rowidlist $row] $id]
6357            if {$x < 0} break
6358            set olds [lindex $parentlist $row]
6359            set kid [lindex $displayorder $row]
6360            set kidx [lsearch -exact [lindex $rowidlist $row] $kid]
6361            if {$kidx < 0} continue
6362            set nextrow [lindex $rowidlist [expr {$row + 1}]]
6363            foreach p $olds {
6364                set px [lsearch -exact $nextrow $p]
6365                if {$px < 0} continue
6366                if {($kidx < $x && $x < $px) || ($px < $x && $x < $kidx)} {
6367                    if {[lsearch -exact $ccross $p] >= 0} continue
6368                    if {$x == $px + ($kidx < $px? -1: 1)} {
6369                        lappend ccross $p
6370                    } elseif {[lsearch -exact $cross $p] < 0} {
6371                        lappend cross $p
6372                    }
6373                }
6374            }
6375        }
6376    }
6377    return [concat $ccross {{}} $cross]
6378}
6379
6380proc assigncolor {id} {
6381    global colormap colors nextcolor
6382    global parents children children curview
6383
6384    if {[info exists colormap($id)]} return
6385    set ncolors [llength $colors]
6386    if {[info exists children($curview,$id)]} {
6387        set kids $children($curview,$id)
6388    } else {
6389        set kids {}
6390    }
6391    if {[llength $kids] == 1} {
6392        set child [lindex $kids 0]
6393        if {[info exists colormap($child)]
6394            && [llength $parents($curview,$child)] == 1} {
6395            set colormap($id) $colormap($child)
6396            return
6397        }
6398    }
6399    set badcolors {}
6400    set origbad {}
6401    foreach x [findcrossings $id] {
6402        if {$x eq {}} {
6403            # delimiter between corner crossings and other crossings
6404            if {[llength $badcolors] >= $ncolors - 1} break
6405            set origbad $badcolors
6406        }
6407        if {[info exists colormap($x)]
6408            && [lsearch -exact $badcolors $colormap($x)] < 0} {
6409            lappend badcolors $colormap($x)
6410        }
6411    }
6412    if {[llength $badcolors] >= $ncolors} {
6413        set badcolors $origbad
6414    }
6415    set origbad $badcolors
6416    if {[llength $badcolors] < $ncolors - 1} {
6417        foreach child $kids {
6418            if {[info exists colormap($child)]
6419                && [lsearch -exact $badcolors $colormap($child)] < 0} {
6420                lappend badcolors $colormap($child)
6421            }
6422            foreach p $parents($curview,$child) {
6423                if {[info exists colormap($p)]
6424                    && [lsearch -exact $badcolors $colormap($p)] < 0} {
6425                    lappend badcolors $colormap($p)
6426                }
6427            }
6428        }
6429        if {[llength $badcolors] >= $ncolors} {
6430            set badcolors $origbad
6431        }
6432    }
6433    for {set i 0} {$i <= $ncolors} {incr i} {
6434        set c [lindex $colors $nextcolor]
6435        if {[incr nextcolor] >= $ncolors} {
6436            set nextcolor 0
6437        }
6438        if {[lsearch -exact $badcolors $c]} break
6439    }
6440    set colormap($id) $c
6441}
6442
6443proc bindline {t id} {
6444    global canv
6445
6446    $canv bind $t <Enter> "lineenter %x %y $id"
6447    $canv bind $t <Motion> "linemotion %x %y $id"
6448    $canv bind $t <Leave> "lineleave $id"
6449    $canv bind $t <Button-1> "lineclick %x %y $id 1"
6450}
6451
6452proc graph_pane_width {} {
6453    global use_ttk
6454
6455    if {$use_ttk} {
6456        set g [.tf.histframe.pwclist sashpos 0]
6457    } else {
6458        set g [.tf.histframe.pwclist sash coord 0]
6459    }
6460    return [lindex $g 0]
6461}
6462
6463proc totalwidth {l font extra} {
6464    set tot 0
6465    foreach str $l {
6466        set tot [expr {$tot + [font measure $font $str] + $extra}]
6467    }
6468    return $tot
6469}
6470
6471proc drawtags {id x xt y1} {
6472    global idtags idheads idotherrefs mainhead
6473    global linespc lthickness
6474    global canv rowtextx curview fgcolor bgcolor ctxbut
6475    global headbgcolor headfgcolor headoutlinecolor remotebgcolor
6476    global tagbgcolor tagfgcolor tagoutlinecolor
6477    global reflinecolor
6478
6479    set marks {}
6480    set ntags 0
6481    set nheads 0
6482    set singletag 0
6483    set maxtags 3
6484    set maxtagpct 25
6485    set maxwidth [expr {[graph_pane_width] * $maxtagpct / 100}]
6486    set delta [expr {int(0.5 * ($linespc - $lthickness))}]
6487    set extra [expr {$delta + $lthickness + $linespc}]
6488
6489    if {[info exists idtags($id)]} {
6490        set marks $idtags($id)
6491        set ntags [llength $marks]
6492        if {$ntags > $maxtags ||
6493            [totalwidth $marks mainfont $extra] > $maxwidth} {
6494            # show just a single "n tags..." tag
6495            set singletag 1
6496            if {$ntags == 1} {
6497                set marks [list "tag..."]
6498            } else {
6499                set marks [list [format "%d tags..." $ntags]]
6500            }
6501            set ntags 1
6502        }
6503    }
6504    if {[info exists idheads($id)]} {
6505        set marks [concat $marks $idheads($id)]
6506        set nheads [llength $idheads($id)]
6507    }
6508    if {[info exists idotherrefs($id)]} {
6509        set marks [concat $marks $idotherrefs($id)]
6510    }
6511    if {$marks eq {}} {
6512        return $xt
6513    }
6514
6515    set yt [expr {$y1 - 0.5 * $linespc}]
6516    set yb [expr {$yt + $linespc - 1}]
6517    set xvals {}
6518    set wvals {}
6519    set i -1
6520    foreach tag $marks {
6521        incr i
6522        if {$i >= $ntags && $i < $ntags + $nheads && $tag eq $mainhead} {
6523            set wid [font measure mainfontbold $tag]
6524        } else {
6525            set wid [font measure mainfont $tag]
6526        }
6527        lappend xvals $xt
6528        lappend wvals $wid
6529        set xt [expr {$xt + $wid + $extra}]
6530    }
6531    set t [$canv create line $x $y1 [lindex $xvals end] $y1 \
6532               -width $lthickness -fill $reflinecolor -tags tag.$id]
6533    $canv lower $t
6534    foreach tag $marks x $xvals wid $wvals {
6535        set tag_quoted [string map {% %%} $tag]
6536        set xl [expr {$x + $delta}]
6537        set xr [expr {$x + $delta + $wid + $lthickness}]
6538        set font mainfont
6539        if {[incr ntags -1] >= 0} {
6540            # draw a tag
6541            set t [$canv create polygon $x [expr {$yt + $delta}] $xl $yt \
6542                       $xr $yt $xr $yb $xl $yb $x [expr {$yb - $delta}] \
6543                       -width 1 -outline $tagoutlinecolor -fill $tagbgcolor \
6544                       -tags tag.$id]
6545            if {$singletag} {
6546                set tagclick [list showtags $id 1]
6547            } else {
6548                set tagclick [list showtag $tag_quoted 1]
6549            }
6550            $canv bind $t <1> $tagclick
6551            set rowtextx([rowofcommit $id]) [expr {$xr + $linespc}]
6552        } else {
6553            # draw a head or other ref
6554            if {[incr nheads -1] >= 0} {
6555                set col $headbgcolor
6556                if {$tag eq $mainhead} {
6557                    set font mainfontbold
6558                }
6559            } else {
6560                set col "#ddddff"
6561            }
6562            set xl [expr {$xl - $delta/2}]
6563            $canv create polygon $x $yt $xr $yt $xr $yb $x $yb \
6564                -width 1 -outline black -fill $col -tags tag.$id
6565            if {[regexp {^(remotes/.*/|remotes/)} $tag match remoteprefix]} {
6566                set rwid [font measure mainfont $remoteprefix]
6567                set xi [expr {$x + 1}]
6568                set yti [expr {$yt + 1}]
6569                set xri [expr {$x + $rwid}]
6570                $canv create polygon $xi $yti $xri $yti $xri $yb $xi $yb \
6571                        -width 0 -fill $remotebgcolor -tags tag.$id
6572            }
6573        }
6574        set t [$canv create text $xl $y1 -anchor w -text $tag -fill $headfgcolor \
6575                   -font $font -tags [list tag.$id text]]
6576        if {$ntags >= 0} {
6577            $canv bind $t <1> $tagclick
6578        } elseif {$nheads >= 0} {
6579            $canv bind $t $ctxbut [list headmenu %X %Y $id $tag_quoted]
6580        }
6581    }
6582    return $xt
6583}
6584
6585proc drawnotesign {xt y} {
6586    global linespc canv fgcolor
6587
6588    set orad [expr {$linespc / 3}]
6589    set t [$canv create rectangle [expr {$xt - $orad}] [expr {$y - $orad}] \
6590               [expr {$xt + $orad - 1}] [expr {$y + $orad - 1}] \
6591               -fill yellow -outline $fgcolor -width 1 -tags circle]
6592    set xt [expr {$xt + $orad * 3}]
6593    return $xt
6594}
6595
6596proc xcoord {i level ln} {
6597    global canvx0 xspc1 xspc2
6598
6599    set x [expr {$canvx0 + $i * $xspc1($ln)}]
6600    if {$i > 0 && $i == $level} {
6601        set x [expr {$x + 0.5 * ($xspc2 - $xspc1($ln))}]
6602    } elseif {$i > $level} {
6603        set x [expr {$x + $xspc2 - $xspc1($ln)}]
6604    }
6605    return $x
6606}
6607
6608proc show_status {msg} {
6609    global canv fgcolor
6610
6611    clear_display
6612    $canv create text 3 3 -anchor nw -text $msg -font mainfont \
6613        -tags text -fill $fgcolor
6614}
6615
6616# Don't change the text pane cursor if it is currently the hand cursor,
6617# showing that we are over a sha1 ID link.
6618proc settextcursor {c} {
6619    global ctext curtextcursor
6620
6621    if {[$ctext cget -cursor] == $curtextcursor} {
6622        $ctext config -cursor $c
6623    }
6624    set curtextcursor $c
6625}
6626
6627proc nowbusy {what {name {}}} {
6628    global isbusy busyname statusw
6629
6630    if {[array names isbusy] eq {}} {
6631        . config -cursor watch
6632        settextcursor watch
6633    }
6634    set isbusy($what) 1
6635    set busyname($what) $name
6636    if {$name ne {}} {
6637        $statusw conf -text $name
6638    }
6639}
6640
6641proc notbusy {what} {
6642    global isbusy maincursor textcursor busyname statusw
6643
6644    catch {
6645        unset isbusy($what)
6646        if {$busyname($what) ne {} &&
6647            [$statusw cget -text] eq $busyname($what)} {
6648            $statusw conf -text {}
6649        }
6650    }
6651    if {[array names isbusy] eq {}} {
6652        . config -cursor $maincursor
6653        settextcursor $textcursor
6654    }
6655}
6656
6657proc findmatches {f} {
6658    global findtype findstring
6659    if {$findtype == [mc "Regexp"]} {
6660        set matches [regexp -indices -all -inline $findstring $f]
6661    } else {
6662        set fs $findstring
6663        if {$findtype == [mc "IgnCase"]} {
6664            set f [string tolower $f]
6665            set fs [string tolower $fs]
6666        }
6667        set matches {}
6668        set i 0
6669        set l [string length $fs]
6670        while {[set j [string first $fs $f $i]] >= 0} {
6671            lappend matches [list $j [expr {$j+$l-1}]]
6672            set i [expr {$j + $l}]
6673        }
6674    }
6675    return $matches
6676}
6677
6678proc dofind {{dirn 1} {wrap 1}} {
6679    global findstring findstartline findcurline selectedline numcommits
6680    global gdttype filehighlight fh_serial find_dirn findallowwrap
6681
6682    if {[info exists find_dirn]} {
6683        if {$find_dirn == $dirn} return
6684        stopfinding
6685    }
6686    focus .
6687    if {$findstring eq {} || $numcommits == 0} return
6688    if {$selectedline eq {}} {
6689        set findstartline [lindex [visiblerows] [expr {$dirn < 0}]]
6690    } else {
6691        set findstartline $selectedline
6692    }
6693    set findcurline $findstartline
6694    nowbusy finding [mc "Searching"]
6695    if {$gdttype ne [mc "containing:"] && ![info exists filehighlight]} {
6696        after cancel do_file_hl $fh_serial
6697        do_file_hl $fh_serial
6698    }
6699    set find_dirn $dirn
6700    set findallowwrap $wrap
6701    run findmore
6702}
6703
6704proc stopfinding {} {
6705    global find_dirn findcurline fprogcoord
6706
6707    if {[info exists find_dirn]} {
6708        unset find_dirn
6709        unset findcurline
6710        notbusy finding
6711        set fprogcoord 0
6712        adjustprogress
6713    }
6714    stopblaming
6715}
6716
6717proc findmore {} {
6718    global commitdata commitinfo numcommits findpattern findloc
6719    global findstartline findcurline findallowwrap
6720    global find_dirn gdttype fhighlights fprogcoord
6721    global curview varcorder vrownum varccommits vrowmod
6722
6723    if {![info exists find_dirn]} {
6724        return 0
6725    }
6726    set fldtypes [list [mc "Headline"] [mc "Author"] "" [mc "Committer"] "" [mc "Comments"]]
6727    set l $findcurline
6728    set moretodo 0
6729    if {$find_dirn > 0} {
6730        incr l
6731        if {$l >= $numcommits} {
6732            set l 0
6733        }
6734        if {$l <= $findstartline} {
6735            set lim [expr {$findstartline + 1}]
6736        } else {
6737            set lim $numcommits
6738            set moretodo $findallowwrap
6739        }
6740    } else {
6741        if {$l == 0} {
6742            set l $numcommits
6743        }
6744        incr l -1
6745        if {$l >= $findstartline} {
6746            set lim [expr {$findstartline - 1}]
6747        } else {
6748            set lim -1
6749            set moretodo $findallowwrap
6750        }
6751    }
6752    set n [expr {($lim - $l) * $find_dirn}]
6753    if {$n > 500} {
6754        set n 500
6755        set moretodo 1
6756    }
6757    if {$l + ($find_dirn > 0? $n: 1) > $vrowmod($curview)} {
6758        update_arcrows $curview
6759    }
6760    set found 0
6761    set domore 1
6762    set ai [bsearch $vrownum($curview) $l]
6763    set a [lindex $varcorder($curview) $ai]
6764    set arow [lindex $vrownum($curview) $ai]
6765    set ids [lindex $varccommits($curview,$a)]
6766    set arowend [expr {$arow + [llength $ids]}]
6767    if {$gdttype eq [mc "containing:"]} {
6768        for {} {$n > 0} {incr n -1; incr l $find_dirn} {
6769            if {$l < $arow || $l >= $arowend} {
6770                incr ai $find_dirn
6771                set a [lindex $varcorder($curview) $ai]
6772                set arow [lindex $vrownum($curview) $ai]
6773                set ids [lindex $varccommits($curview,$a)]
6774                set arowend [expr {$arow + [llength $ids]}]
6775            }
6776            set id [lindex $ids [expr {$l - $arow}]]
6777            # shouldn't happen unless git log doesn't give all the commits...
6778            if {![info exists commitdata($id)] ||
6779                ![doesmatch $commitdata($id)]} {
6780                continue
6781            }
6782            if {![info exists commitinfo($id)]} {
6783                getcommit $id
6784            }
6785            set info $commitinfo($id)
6786            foreach f $info ty $fldtypes {
6787                if {$ty eq ""} continue
6788                if {($findloc eq [mc "All fields"] || $findloc eq $ty) &&
6789                    [doesmatch $f]} {
6790                    set found 1
6791                    break
6792                }
6793            }
6794            if {$found} break
6795        }
6796    } else {
6797        for {} {$n > 0} {incr n -1; incr l $find_dirn} {
6798            if {$l < $arow || $l >= $arowend} {
6799                incr ai $find_dirn
6800                set a [lindex $varcorder($curview) $ai]
6801                set arow [lindex $vrownum($curview) $ai]
6802                set ids [lindex $varccommits($curview,$a)]
6803                set arowend [expr {$arow + [llength $ids]}]
6804            }
6805            set id [lindex $ids [expr {$l - $arow}]]
6806            if {![info exists fhighlights($id)]} {
6807                # this sets fhighlights($id) to -1
6808                askfilehighlight $l $id
6809            }
6810            if {$fhighlights($id) > 0} {
6811                set found $domore
6812                break
6813            }
6814            if {$fhighlights($id) < 0} {
6815                if {$domore} {
6816                    set domore 0
6817                    set findcurline [expr {$l - $find_dirn}]
6818                }
6819            }
6820        }
6821    }
6822    if {$found || ($domore && !$moretodo)} {
6823        unset findcurline
6824        unset find_dirn
6825        notbusy finding
6826        set fprogcoord 0
6827        adjustprogress
6828        if {$found} {
6829            findselectline $l
6830        } else {
6831            bell
6832        }
6833        return 0
6834    }
6835    if {!$domore} {
6836        flushhighlights
6837    } else {
6838        set findcurline [expr {$l - $find_dirn}]
6839    }
6840    set n [expr {($findcurline - $findstartline) * $find_dirn - 1}]
6841    if {$n < 0} {
6842        incr n $numcommits
6843    }
6844    set fprogcoord [expr {$n * 1.0 / $numcommits}]
6845    adjustprogress
6846    return $domore
6847}
6848
6849proc findselectline {l} {
6850    global findloc commentend ctext findcurline markingmatches gdttype
6851
6852    set markingmatches [expr {$gdttype eq [mc "containing:"]}]
6853    set findcurline $l
6854    selectline $l 1
6855    if {$markingmatches &&
6856        ($findloc eq [mc "All fields"] || $findloc eq [mc "Comments"])} {
6857        # highlight the matches in the comments
6858        set f [$ctext get 1.0 $commentend]
6859        set matches [findmatches $f]
6860        foreach match $matches {
6861            set start [lindex $match 0]
6862            set end [expr {[lindex $match 1] + 1}]
6863            $ctext tag add found "1.0 + $start c" "1.0 + $end c"
6864        }
6865    }
6866    drawvisible
6867}
6868
6869# mark the bits of a headline or author that match a find string
6870proc markmatches {canv l str tag matches font row} {
6871    global selectedline
6872
6873    set bbox [$canv bbox $tag]
6874    set x0 [lindex $bbox 0]
6875    set y0 [lindex $bbox 1]
6876    set y1 [lindex $bbox 3]
6877    foreach match $matches {
6878        set start [lindex $match 0]
6879        set end [lindex $match 1]
6880        if {$start > $end} continue
6881        set xoff [font measure $font [string range $str 0 [expr {$start-1}]]]
6882        set xlen [font measure $font [string range $str 0 [expr {$end}]]]
6883        set t [$canv create rect [expr {$x0+$xoff}] $y0 \
6884                   [expr {$x0+$xlen+2}] $y1 \
6885                   -outline {} -tags [list match$l matches] -fill yellow]
6886        $canv lower $t
6887        if {$row == $selectedline} {
6888            $canv raise $t secsel
6889        }
6890    }
6891}
6892
6893proc unmarkmatches {} {
6894    global markingmatches
6895
6896    allcanvs delete matches
6897    set markingmatches 0
6898    stopfinding
6899}
6900
6901proc selcanvline {w x y} {
6902    global canv canvy0 ctext linespc
6903    global rowtextx
6904    set ymax [lindex [$canv cget -scrollregion] 3]
6905    if {$ymax == {}} return
6906    set yfrac [lindex [$canv yview] 0]
6907    set y [expr {$y + $yfrac * $ymax}]
6908    set l [expr {int(($y - $canvy0) / $linespc + 0.5)}]
6909    if {$l < 0} {
6910        set l 0
6911    }
6912    if {$w eq $canv} {
6913        set xmax [lindex [$canv cget -scrollregion] 2]
6914        set xleft [expr {[lindex [$canv xview] 0] * $xmax}]
6915        if {![info exists rowtextx($l)] || $xleft + $x < $rowtextx($l)} return
6916    }
6917    unmarkmatches
6918    selectline $l 1
6919}
6920
6921proc commit_descriptor {p} {
6922    global commitinfo
6923    if {![info exists commitinfo($p)]} {
6924        getcommit $p
6925    }
6926    set l "..."
6927    if {[llength $commitinfo($p)] > 1} {
6928        set l [lindex $commitinfo($p) 0]
6929    }
6930    return "$p ($l)\n"
6931}
6932
6933# append some text to the ctext widget, and make any SHA1 ID
6934# that we know about be a clickable link.
6935proc appendwithlinks {text tags} {
6936    global ctext linknum curview
6937
6938    set start [$ctext index "end - 1c"]
6939    $ctext insert end $text $tags
6940    set links [regexp -indices -all -inline {(?:\m|-g)[0-9a-f]{6,40}\M} $text]
6941    foreach l $links {
6942        set s [lindex $l 0]
6943        set e [lindex $l 1]
6944        set linkid [string range $text $s $e]
6945        incr e
6946        $ctext tag delete link$linknum
6947        $ctext tag add link$linknum "$start + $s c" "$start + $e c"
6948        setlink $linkid link$linknum
6949        incr linknum
6950    }
6951}
6952
6953proc setlink {id lk} {
6954    global curview ctext pendinglinks
6955    global linkfgcolor
6956
6957    if {[string range $id 0 1] eq "-g"} {
6958      set id [string range $id 2 end]
6959    }
6960
6961    set known 0
6962    if {[string length $id] < 40} {
6963        set matches [longid $id]
6964        if {[llength $matches] > 0} {
6965            if {[llength $matches] > 1} return
6966            set known 1
6967            set id [lindex $matches 0]
6968        }
6969    } else {
6970        set known [commitinview $id $curview]
6971    }
6972    if {$known} {
6973        $ctext tag conf $lk -foreground $linkfgcolor -underline 1
6974        $ctext tag bind $lk <1> [list selbyid $id]
6975        $ctext tag bind $lk <Enter> {linkcursor %W 1}
6976        $ctext tag bind $lk <Leave> {linkcursor %W -1}
6977    } else {
6978        lappend pendinglinks($id) $lk
6979        interestedin $id {makelink %P}
6980    }
6981}
6982
6983proc appendshortlink {id {pre {}} {post {}}} {
6984    global ctext linknum
6985
6986    $ctext insert end $pre
6987    $ctext tag delete link$linknum
6988    $ctext insert end [string range $id 0 7] link$linknum
6989    $ctext insert end $post
6990    setlink $id link$linknum
6991    incr linknum
6992}
6993
6994proc makelink {id} {
6995    global pendinglinks
6996
6997    if {![info exists pendinglinks($id)]} return
6998    foreach lk $pendinglinks($id) {
6999        setlink $id $lk
7000    }
7001    unset pendinglinks($id)
7002}
7003
7004proc linkcursor {w inc} {
7005    global linkentercount curtextcursor
7006
7007    if {[incr linkentercount $inc] > 0} {
7008        $w configure -cursor hand2
7009    } else {
7010        $w configure -cursor $curtextcursor
7011        if {$linkentercount < 0} {
7012            set linkentercount 0
7013        }
7014    }
7015}
7016
7017proc viewnextline {dir} {
7018    global canv linespc
7019
7020    $canv delete hover
7021    set ymax [lindex [$canv cget -scrollregion] 3]
7022    set wnow [$canv yview]
7023    set wtop [expr {[lindex $wnow 0] * $ymax}]
7024    set newtop [expr {$wtop + $dir * $linespc}]
7025    if {$newtop < 0} {
7026        set newtop 0
7027    } elseif {$newtop > $ymax} {
7028        set newtop $ymax
7029    }
7030    allcanvs yview moveto [expr {$newtop * 1.0 / $ymax}]
7031}
7032
7033# add a list of tag or branch names at position pos
7034# returns the number of names inserted
7035proc appendrefs {pos ids var} {
7036    global ctext linknum curview $var maxrefs mainheadid
7037
7038    if {[catch {$ctext index $pos}]} {
7039        return 0
7040    }
7041    $ctext conf -state normal
7042    $ctext delete $pos "$pos lineend"
7043    set tags {}
7044    foreach id $ids {
7045        foreach tag [set $var\($id\)] {
7046            lappend tags [list $tag $id]
7047        }
7048    }
7049
7050    set sep {}
7051    set tags [lsort -index 0 -decreasing $tags]
7052    set nutags 0
7053
7054    if {[llength $tags] > $maxrefs} {
7055        # If we are displaying heads, and there are too many,
7056        # see if there are some important heads to display.
7057        # Currently this means "master" and the current head.
7058        set itags {}
7059        if {$var eq "idheads"} {
7060            set utags {}
7061            foreach ti $tags {
7062                set hname [lindex $ti 0]
7063                set id [lindex $ti 1]
7064                if {($hname eq "master" || $id eq $mainheadid) &&
7065                    [llength $itags] < $maxrefs} {
7066                    lappend itags $ti
7067                } else {
7068                    lappend utags $ti
7069                }
7070            }
7071            set tags $utags
7072        }
7073        if {$itags ne {}} {
7074            set str [mc "and many more"]
7075            set sep " "
7076        } else {
7077            set str [mc "many"]
7078        }
7079        $ctext insert $pos "$str ([llength $tags])"
7080        set nutags [llength $tags]
7081        set tags $itags
7082    }
7083
7084    foreach ti $tags {
7085        set id [lindex $ti 1]
7086        set lk link$linknum
7087        incr linknum
7088        $ctext tag delete $lk
7089        $ctext insert $pos $sep
7090        $ctext insert $pos [lindex $ti 0] $lk
7091        setlink $id $lk
7092        set sep ", "
7093    }
7094    $ctext tag add wwrap "$pos linestart" "$pos lineend"
7095    $ctext conf -state disabled
7096    return [expr {[llength $tags] + $nutags}]
7097}
7098
7099# called when we have finished computing the nearby tags
7100proc dispneartags {delay} {
7101    global selectedline currentid showneartags tagphase
7102
7103    if {$selectedline eq {} || !$showneartags} return
7104    after cancel dispnexttag
7105    if {$delay} {
7106        after 200 dispnexttag
7107        set tagphase -1
7108    } else {
7109        after idle dispnexttag
7110        set tagphase 0
7111    }
7112}
7113
7114proc dispnexttag {} {
7115    global selectedline currentid showneartags tagphase ctext
7116
7117    if {$selectedline eq {} || !$showneartags} return
7118    switch -- $tagphase {
7119        0 {
7120            set dtags [desctags $currentid]
7121            if {$dtags ne {}} {
7122                appendrefs precedes $dtags idtags
7123            }
7124        }
7125        1 {
7126            set atags [anctags $currentid]
7127            if {$atags ne {}} {
7128                appendrefs follows $atags idtags
7129            }
7130        }
7131        2 {
7132            set dheads [descheads $currentid]
7133            if {$dheads ne {}} {
7134                if {[appendrefs branch $dheads idheads] > 1
7135                    && [$ctext get "branch -3c"] eq "h"} {
7136                    # turn "Branch" into "Branches"
7137                    $ctext conf -state normal
7138                    $ctext insert "branch -2c" "es"
7139                    $ctext conf -state disabled
7140                }
7141            }
7142        }
7143    }
7144    if {[incr tagphase] <= 2} {
7145        after idle dispnexttag
7146    }
7147}
7148
7149proc make_secsel {id} {
7150    global linehtag linentag linedtag canv canv2 canv3
7151
7152    if {![info exists linehtag($id)]} return
7153    $canv delete secsel
7154    set t [eval $canv create rect [$canv bbox $linehtag($id)] -outline {{}} \
7155               -tags secsel -fill [$canv cget -selectbackground]]
7156    $canv lower $t
7157    $canv2 delete secsel
7158    set t [eval $canv2 create rect [$canv2 bbox $linentag($id)] -outline {{}} \
7159               -tags secsel -fill [$canv2 cget -selectbackground]]
7160    $canv2 lower $t
7161    $canv3 delete secsel
7162    set t [eval $canv3 create rect [$canv3 bbox $linedtag($id)] -outline {{}} \
7163               -tags secsel -fill [$canv3 cget -selectbackground]]
7164    $canv3 lower $t
7165}
7166
7167proc make_idmark {id} {
7168    global linehtag canv fgcolor
7169
7170    if {![info exists linehtag($id)]} return
7171    $canv delete markid
7172    set t [eval $canv create rect [$canv bbox $linehtag($id)] \
7173               -tags markid -outline $fgcolor]
7174    $canv raise $t
7175}
7176
7177proc selectline {l isnew {desired_loc {}} {switch_to_patch 0}} {
7178    global canv ctext commitinfo selectedline
7179    global canvy0 linespc parents children curview
7180    global currentid sha1entry
7181    global commentend idtags linknum
7182    global mergemax numcommits pending_select
7183    global cmitmode showneartags allcommits
7184    global targetrow targetid lastscrollrows
7185    global autoselect autosellen jump_to_here
7186    global vinlinediff
7187
7188    catch {unset pending_select}
7189    $canv delete hover
7190    normalline
7191    unsel_reflist
7192    stopfinding
7193    if {$l < 0 || $l >= $numcommits} return
7194    set id [commitonrow $l]
7195    set targetid $id
7196    set targetrow $l
7197    set selectedline $l
7198    set currentid $id
7199    if {$lastscrollrows < $numcommits} {
7200        setcanvscroll
7201    }
7202
7203    if {$cmitmode ne "patch" && $switch_to_patch} {
7204        set cmitmode "patch"
7205    }
7206
7207    set y [expr {$canvy0 + $l * $linespc}]
7208    set ymax [lindex [$canv cget -scrollregion] 3]
7209    set ytop [expr {$y - $linespc - 1}]
7210    set ybot [expr {$y + $linespc + 1}]
7211    set wnow [$canv yview]
7212    set wtop [expr {[lindex $wnow 0] * $ymax}]
7213    set wbot [expr {[lindex $wnow 1] * $ymax}]
7214    set wh [expr {$wbot - $wtop}]
7215    set newtop $wtop
7216    if {$ytop < $wtop} {
7217        if {$ybot < $wtop} {
7218            set newtop [expr {$y - $wh / 2.0}]
7219        } else {
7220            set newtop $ytop
7221            if {$newtop > $wtop - $linespc} {
7222                set newtop [expr {$wtop - $linespc}]
7223            }
7224        }
7225    } elseif {$ybot > $wbot} {
7226        if {$ytop > $wbot} {
7227            set newtop [expr {$y - $wh / 2.0}]
7228        } else {
7229            set newtop [expr {$ybot - $wh}]
7230            if {$newtop < $wtop + $linespc} {
7231                set newtop [expr {$wtop + $linespc}]
7232            }
7233        }
7234    }
7235    if {$newtop != $wtop} {
7236        if {$newtop < 0} {
7237            set newtop 0
7238        }
7239        allcanvs yview moveto [expr {$newtop * 1.0 / $ymax}]
7240        drawvisible
7241    }
7242
7243    make_secsel $id
7244
7245    if {$isnew} {
7246        addtohistory [list selbyid $id 0] savecmitpos
7247    }
7248
7249    $sha1entry delete 0 end
7250    $sha1entry insert 0 $id
7251    if {$autoselect} {
7252        $sha1entry selection range 0 $autosellen
7253    }
7254    rhighlight_sel $id
7255
7256    $ctext conf -state normal
7257    clear_ctext
7258    set linknum 0
7259    if {![info exists commitinfo($id)]} {
7260        getcommit $id
7261    }
7262    set info $commitinfo($id)
7263    set date [formatdate [lindex $info 2]]
7264    $ctext insert end "[mc "Author"]: [lindex $info 1]  $date\n"
7265    set date [formatdate [lindex $info 4]]
7266    $ctext insert end "[mc "Committer"]: [lindex $info 3]  $date\n"
7267    if {[info exists idtags($id)]} {
7268        $ctext insert end [mc "Tags:"]
7269        foreach tag $idtags($id) {
7270            $ctext insert end " $tag"
7271        }
7272        $ctext insert end "\n"
7273    }
7274
7275    set headers {}
7276    set olds $parents($curview,$id)
7277    if {[llength $olds] > 1} {
7278        set np 0
7279        foreach p $olds {
7280            if {$np >= $mergemax} {
7281                set tag mmax
7282            } else {
7283                set tag m$np
7284            }
7285            $ctext insert end "[mc "Parent"]: " $tag
7286            appendwithlinks [commit_descriptor $p] {}
7287            incr np
7288        }
7289    } else {
7290        foreach p $olds {
7291            append headers "[mc "Parent"]: [commit_descriptor $p]"
7292        }
7293    }
7294
7295    foreach c $children($curview,$id) {
7296        append headers "[mc "Child"]:  [commit_descriptor $c]"
7297    }
7298
7299    # make anything that looks like a SHA1 ID be a clickable link
7300    appendwithlinks $headers {}
7301    if {$showneartags} {
7302        if {![info exists allcommits]} {
7303            getallcommits
7304        }
7305        $ctext insert end "[mc "Branch"]: "
7306        $ctext mark set branch "end -1c"
7307        $ctext mark gravity branch left
7308        $ctext insert end "\n[mc "Follows"]: "
7309        $ctext mark set follows "end -1c"
7310        $ctext mark gravity follows left
7311        $ctext insert end "\n[mc "Precedes"]: "
7312        $ctext mark set precedes "end -1c"
7313        $ctext mark gravity precedes left
7314        $ctext insert end "\n"
7315        dispneartags 1
7316    }
7317    $ctext insert end "\n"
7318    set comment [lindex $info 5]
7319    if {[string first "\r" $comment] >= 0} {
7320        set comment [string map {"\r" "\n    "} $comment]
7321    }
7322    appendwithlinks $comment {comment}
7323
7324    $ctext tag remove found 1.0 end
7325    $ctext conf -state disabled
7326    set commentend [$ctext index "end - 1c"]
7327
7328    set jump_to_here $desired_loc
7329    init_flist [mc "Comments"]
7330    if {$cmitmode eq "tree"} {
7331        gettree $id
7332    } elseif {$vinlinediff($curview) == 1} {
7333        showinlinediff $id
7334    } elseif {[llength $olds] <= 1} {
7335        startdiff $id
7336    } else {
7337        mergediff $id
7338    }
7339}
7340
7341proc selfirstline {} {
7342    unmarkmatches
7343    selectline 0 1
7344}
7345
7346proc sellastline {} {
7347    global numcommits
7348    unmarkmatches
7349    set l [expr {$numcommits - 1}]
7350    selectline $l 1
7351}
7352
7353proc selnextline {dir} {
7354    global selectedline
7355    focus .
7356    if {$selectedline eq {}} return
7357    set l [expr {$selectedline + $dir}]
7358    unmarkmatches
7359    selectline $l 1
7360}
7361
7362proc selnextpage {dir} {
7363    global canv linespc selectedline numcommits
7364
7365    set lpp [expr {([winfo height $canv] - 2) / $linespc}]
7366    if {$lpp < 1} {
7367        set lpp 1
7368    }
7369    allcanvs yview scroll [expr {$dir * $lpp}] units
7370    drawvisible
7371    if {$selectedline eq {}} return
7372    set l [expr {$selectedline + $dir * $lpp}]
7373    if {$l < 0} {
7374        set l 0
7375    } elseif {$l >= $numcommits} {
7376        set l [expr $numcommits - 1]
7377    }
7378    unmarkmatches
7379    selectline $l 1
7380}
7381
7382proc unselectline {} {
7383    global selectedline currentid
7384
7385    set selectedline {}
7386    catch {unset currentid}
7387    allcanvs delete secsel
7388    rhighlight_none
7389}
7390
7391proc reselectline {} {
7392    global selectedline
7393
7394    if {$selectedline ne {}} {
7395        selectline $selectedline 0
7396    }
7397}
7398
7399proc addtohistory {cmd {saveproc {}}} {
7400    global history historyindex curview
7401
7402    unset_posvars
7403    save_position
7404    set elt [list $curview $cmd $saveproc {}]
7405    if {$historyindex > 0
7406        && [lindex $history [expr {$historyindex - 1}]] == $elt} {
7407        return
7408    }
7409
7410    if {$historyindex < [llength $history]} {
7411        set history [lreplace $history $historyindex end $elt]
7412    } else {
7413        lappend history $elt
7414    }
7415    incr historyindex
7416    if {$historyindex > 1} {
7417        .tf.bar.leftbut conf -state normal
7418    } else {
7419        .tf.bar.leftbut conf -state disabled
7420    }
7421    .tf.bar.rightbut conf -state disabled
7422}
7423
7424# save the scrolling position of the diff display pane
7425proc save_position {} {
7426    global historyindex history
7427
7428    if {$historyindex < 1} return
7429    set hi [expr {$historyindex - 1}]
7430    set fn [lindex $history $hi 2]
7431    if {$fn ne {}} {
7432        lset history $hi 3 [eval $fn]
7433    }
7434}
7435
7436proc unset_posvars {} {
7437    global last_posvars
7438
7439    if {[info exists last_posvars]} {
7440        foreach {var val} $last_posvars {
7441            global $var
7442            catch {unset $var}
7443        }
7444        unset last_posvars
7445    }
7446}
7447
7448proc godo {elt} {
7449    global curview last_posvars
7450
7451    set view [lindex $elt 0]
7452    set cmd [lindex $elt 1]
7453    set pv [lindex $elt 3]
7454    if {$curview != $view} {
7455        showview $view
7456    }
7457    unset_posvars
7458    foreach {var val} $pv {
7459        global $var
7460        set $var $val
7461    }
7462    set last_posvars $pv
7463    eval $cmd
7464}
7465
7466proc goback {} {
7467    global history historyindex
7468    focus .
7469
7470    if {$historyindex > 1} {
7471        save_position
7472        incr historyindex -1
7473        godo [lindex $history [expr {$historyindex - 1}]]
7474        .tf.bar.rightbut conf -state normal
7475    }
7476    if {$historyindex <= 1} {
7477        .tf.bar.leftbut conf -state disabled
7478    }
7479}
7480
7481proc goforw {} {
7482    global history historyindex
7483    focus .
7484
7485    if {$historyindex < [llength $history]} {
7486        save_position
7487        set cmd [lindex $history $historyindex]
7488        incr historyindex
7489        godo $cmd
7490        .tf.bar.leftbut conf -state normal
7491    }
7492    if {$historyindex >= [llength $history]} {
7493        .tf.bar.rightbut conf -state disabled
7494    }
7495}
7496
7497proc gettree {id} {
7498    global treefilelist treeidlist diffids diffmergeid treepending
7499    global nullid nullid2
7500
7501    set diffids $id
7502    catch {unset diffmergeid}
7503    if {![info exists treefilelist($id)]} {
7504        if {![info exists treepending]} {
7505            if {$id eq $nullid} {
7506                set cmd [list | git ls-files]
7507            } elseif {$id eq $nullid2} {
7508                set cmd [list | git ls-files --stage -t]
7509            } else {
7510                set cmd [list | git ls-tree -r $id]
7511            }
7512            if {[catch {set gtf [open $cmd r]}]} {
7513                return
7514            }
7515            set treepending $id
7516            set treefilelist($id) {}
7517            set treeidlist($id) {}
7518            fconfigure $gtf -blocking 0 -encoding binary
7519            filerun $gtf [list gettreeline $gtf $id]
7520        }
7521    } else {
7522        setfilelist $id
7523    }
7524}
7525
7526proc gettreeline {gtf id} {
7527    global treefilelist treeidlist treepending cmitmode diffids nullid nullid2
7528
7529    set nl 0
7530    while {[incr nl] <= 1000 && [gets $gtf line] >= 0} {
7531        if {$diffids eq $nullid} {
7532            set fname $line
7533        } else {
7534            set i [string first "\t" $line]
7535            if {$i < 0} continue
7536            set fname [string range $line [expr {$i+1}] end]
7537            set line [string range $line 0 [expr {$i-1}]]
7538            if {$diffids ne $nullid2 && [lindex $line 1] ne "blob"} continue
7539            set sha1 [lindex $line 2]
7540            lappend treeidlist($id) $sha1
7541        }
7542        if {[string index $fname 0] eq "\""} {
7543            set fname [lindex $fname 0]
7544        }
7545        set fname [encoding convertfrom $fname]
7546        lappend treefilelist($id) $fname
7547    }
7548    if {![eof $gtf]} {
7549        return [expr {$nl >= 1000? 2: 1}]
7550    }
7551    close $gtf
7552    unset treepending
7553    if {$cmitmode ne "tree"} {
7554        if {![info exists diffmergeid]} {
7555            gettreediffs $diffids
7556        }
7557    } elseif {$id ne $diffids} {
7558        gettree $diffids
7559    } else {
7560        setfilelist $id
7561    }
7562    return 0
7563}
7564
7565proc showfile {f} {
7566    global treefilelist treeidlist diffids nullid nullid2
7567    global ctext_file_names ctext_file_lines
7568    global ctext commentend
7569
7570    set i [lsearch -exact $treefilelist($diffids) $f]
7571    if {$i < 0} {
7572        puts "oops, $f not in list for id $diffids"
7573        return
7574    }
7575    if {$diffids eq $nullid} {
7576        if {[catch {set bf [open $f r]} err]} {
7577            puts "oops, can't read $f: $err"
7578            return
7579        }
7580    } else {
7581        set blob [lindex $treeidlist($diffids) $i]
7582        if {[catch {set bf [open [concat | git cat-file blob $blob] r]} err]} {
7583            puts "oops, error reading blob $blob: $err"
7584            return
7585        }
7586    }
7587    fconfigure $bf -blocking 0 -encoding [get_path_encoding $f]
7588    filerun $bf [list getblobline $bf $diffids]
7589    $ctext config -state normal
7590    clear_ctext $commentend
7591    lappend ctext_file_names $f
7592    lappend ctext_file_lines [lindex [split $commentend "."] 0]
7593    $ctext insert end "\n"
7594    $ctext insert end "$f\n" filesep
7595    $ctext config -state disabled
7596    $ctext yview $commentend
7597    settabs 0
7598}
7599
7600proc getblobline {bf id} {
7601    global diffids cmitmode ctext
7602
7603    if {$id ne $diffids || $cmitmode ne "tree"} {
7604        catch {close $bf}
7605        return 0
7606    }
7607    $ctext config -state normal
7608    set nl 0
7609    while {[incr nl] <= 1000 && [gets $bf line] >= 0} {
7610        $ctext insert end "$line\n"
7611    }
7612    if {[eof $bf]} {
7613        global jump_to_here ctext_file_names commentend
7614
7615        # delete last newline
7616        $ctext delete "end - 2c" "end - 1c"
7617        close $bf
7618        if {$jump_to_here ne {} &&
7619            [lindex $jump_to_here 0] eq [lindex $ctext_file_names 0]} {
7620            set lnum [expr {[lindex $jump_to_here 1] +
7621                            [lindex [split $commentend .] 0]}]
7622            mark_ctext_line $lnum
7623        }
7624        $ctext config -state disabled
7625        return 0
7626    }
7627    $ctext config -state disabled
7628    return [expr {$nl >= 1000? 2: 1}]
7629}
7630
7631proc mark_ctext_line {lnum} {
7632    global ctext markbgcolor
7633
7634    $ctext tag delete omark
7635    $ctext tag add omark $lnum.0 "$lnum.0 + 1 line"
7636    $ctext tag conf omark -background $markbgcolor
7637    $ctext see $lnum.0
7638}
7639
7640proc mergediff {id} {
7641    global diffmergeid
7642    global diffids treediffs
7643    global parents curview
7644
7645    set diffmergeid $id
7646    set diffids $id
7647    set treediffs($id) {}
7648    set np [llength $parents($curview,$id)]
7649    settabs $np
7650    getblobdiffs $id
7651}
7652
7653proc startdiff {ids} {
7654    global treediffs diffids treepending diffmergeid nullid nullid2
7655
7656    settabs 1
7657    set diffids $ids
7658    catch {unset diffmergeid}
7659    if {![info exists treediffs($ids)] ||
7660        [lsearch -exact $ids $nullid] >= 0 ||
7661        [lsearch -exact $ids $nullid2] >= 0} {
7662        if {![info exists treepending]} {
7663            gettreediffs $ids
7664        }
7665    } else {
7666        addtocflist $ids
7667    }
7668}
7669
7670proc showinlinediff {ids} {
7671    global commitinfo commitdata ctext
7672    global treediffs
7673
7674    set info $commitinfo($ids)
7675    set diff [lindex $info 7]
7676    set difflines [split $diff "\n"]
7677
7678    initblobdiffvars
7679    set treediff {}
7680
7681    set inhdr 0
7682    foreach line $difflines {
7683        if {![string compare -length 5 "diff " $line]} {
7684            set inhdr 1
7685        } elseif {$inhdr && ![string compare -length 4 "+++ " $line]} {
7686            # offset also accounts for the b/ prefix
7687            lappend treediff [string range $line 6 end]
7688            set inhdr 0
7689        }
7690    }
7691
7692    set treediffs($ids) $treediff
7693    add_flist $treediff
7694
7695    $ctext conf -state normal
7696    foreach line $difflines {
7697        parseblobdiffline $ids $line
7698    }
7699    maybe_scroll_ctext 1
7700    $ctext conf -state disabled
7701}
7702
7703# If the filename (name) is under any of the passed filter paths
7704# then return true to include the file in the listing.
7705proc path_filter {filter name} {
7706    set worktree [gitworktree]
7707    foreach p $filter {
7708        set fq_p [file normalize $p]
7709        set fq_n [file normalize [file join $worktree $name]]
7710        if {[string match [file normalize $fq_p]* $fq_n]} {
7711            return 1
7712        }
7713    }
7714    return 0
7715}
7716
7717proc addtocflist {ids} {
7718    global treediffs
7719
7720    add_flist $treediffs($ids)
7721    getblobdiffs $ids
7722}
7723
7724proc diffcmd {ids flags} {
7725    global log_showroot nullid nullid2 git_version
7726
7727    set i [lsearch -exact $ids $nullid]
7728    set j [lsearch -exact $ids $nullid2]
7729    if {$i >= 0} {
7730        if {[llength $ids] > 1 && $j < 0} {
7731            # comparing working directory with some specific revision
7732            set cmd [concat | git diff-index $flags]
7733            if {$i == 0} {
7734                lappend cmd -R [lindex $ids 1]
7735            } else {
7736                lappend cmd [lindex $ids 0]
7737            }
7738        } else {
7739            # comparing working directory with index
7740            set cmd [concat | git diff-files $flags]
7741            if {$j == 1} {
7742                lappend cmd -R
7743            }
7744        }
7745    } elseif {$j >= 0} {
7746        if {[package vcompare $git_version "1.7.2"] >= 0} {
7747            set flags "$flags --ignore-submodules=dirty"
7748        }
7749        set cmd [concat | git diff-index --cached $flags]
7750        if {[llength $ids] > 1} {
7751            # comparing index with specific revision
7752            if {$j == 0} {
7753                lappend cmd -R [lindex $ids 1]
7754            } else {
7755                lappend cmd [lindex $ids 0]
7756            }
7757        } else {
7758            # comparing index with HEAD
7759            lappend cmd HEAD
7760        }
7761    } else {
7762        if {$log_showroot} {
7763            lappend flags --root
7764        }
7765        set cmd [concat | git diff-tree -r $flags $ids]
7766    }
7767    return $cmd
7768}
7769
7770proc gettreediffs {ids} {
7771    global treediff treepending limitdiffs vfilelimit curview
7772
7773    set cmd [diffcmd $ids {--no-commit-id}]
7774    if {$limitdiffs && $vfilelimit($curview) ne {}} {
7775            set cmd [concat $cmd -- $vfilelimit($curview)]
7776    }
7777    if {[catch {set gdtf [open $cmd r]}]} return
7778
7779    set treepending $ids
7780    set treediff {}
7781    fconfigure $gdtf -blocking 0 -encoding binary
7782    filerun $gdtf [list gettreediffline $gdtf $ids]
7783}
7784
7785proc gettreediffline {gdtf ids} {
7786    global treediff treediffs treepending diffids diffmergeid
7787    global cmitmode vfilelimit curview limitdiffs perfile_attrs
7788
7789    set nr 0
7790    set sublist {}
7791    set max 1000
7792    if {$perfile_attrs} {
7793        # cache_gitattr is slow, and even slower on win32 where we
7794        # have to invoke it for only about 30 paths at a time
7795        set max 500
7796        if {[tk windowingsystem] == "win32"} {
7797            set max 120
7798        }
7799    }
7800    while {[incr nr] <= $max && [gets $gdtf line] >= 0} {
7801        set i [string first "\t" $line]
7802        if {$i >= 0} {
7803            set file [string range $line [expr {$i+1}] end]
7804            if {[string index $file 0] eq "\""} {
7805                set file [lindex $file 0]
7806            }
7807            set file [encoding convertfrom $file]
7808            if {$file ne [lindex $treediff end]} {
7809                lappend treediff $file
7810                lappend sublist $file
7811            }
7812        }
7813    }
7814    if {$perfile_attrs} {
7815        cache_gitattr encoding $sublist
7816    }
7817    if {![eof $gdtf]} {
7818        return [expr {$nr >= $max? 2: 1}]
7819    }
7820    close $gdtf
7821    set treediffs($ids) $treediff
7822    unset treepending
7823    if {$cmitmode eq "tree" && [llength $diffids] == 1} {
7824        gettree $diffids
7825    } elseif {$ids != $diffids} {
7826        if {![info exists diffmergeid]} {
7827            gettreediffs $diffids
7828        }
7829    } else {
7830        addtocflist $ids
7831    }
7832    return 0
7833}
7834
7835# empty string or positive integer
7836proc diffcontextvalidate {v} {
7837    return [regexp {^(|[1-9][0-9]*)$} $v]
7838}
7839
7840proc diffcontextchange {n1 n2 op} {
7841    global diffcontextstring diffcontext
7842
7843    if {[string is integer -strict $diffcontextstring]} {
7844        if {$diffcontextstring >= 0} {
7845            set diffcontext $diffcontextstring
7846            reselectline
7847        }
7848    }
7849}
7850
7851proc changeignorespace {} {
7852    reselectline
7853}
7854
7855proc changeworddiff {name ix op} {
7856    reselectline
7857}
7858
7859proc initblobdiffvars {} {
7860    global diffencoding targetline diffnparents
7861    global diffinhdr currdiffsubmod diffseehere
7862    set targetline {}
7863    set diffnparents 0
7864    set diffinhdr 0
7865    set diffencoding [get_path_encoding {}]
7866    set currdiffsubmod ""
7867    set diffseehere -1
7868}
7869
7870proc getblobdiffs {ids} {
7871    global blobdifffd diffids env
7872    global treediffs
7873    global diffcontext
7874    global ignorespace
7875    global worddiff
7876    global limitdiffs vfilelimit curview
7877    global git_version
7878
7879    set textconv {}
7880    if {[package vcompare $git_version "1.6.1"] >= 0} {
7881        set textconv "--textconv"
7882    }
7883    set submodule {}
7884    if {[package vcompare $git_version "1.6.6"] >= 0} {
7885        set submodule "--submodule"
7886    }
7887    set cmd [diffcmd $ids "-p $textconv $submodule  -C --cc --no-commit-id -U$diffcontext"]
7888    if {$ignorespace} {
7889        append cmd " -w"
7890    }
7891    if {$worddiff ne [mc "Line diff"]} {
7892        append cmd " --word-diff=porcelain"
7893    }
7894    if {$limitdiffs && $vfilelimit($curview) ne {}} {
7895        set cmd [concat $cmd -- $vfilelimit($curview)]
7896    }
7897    if {[catch {set bdf [open $cmd r]} err]} {
7898        error_popup [mc "Error getting diffs: %s" $err]
7899        return
7900    }
7901    fconfigure $bdf -blocking 0 -encoding binary -eofchar {}
7902    set blobdifffd($ids) $bdf
7903    initblobdiffvars
7904    filerun $bdf [list getblobdiffline $bdf $diffids]
7905}
7906
7907proc savecmitpos {} {
7908    global ctext cmitmode
7909
7910    if {$cmitmode eq "tree"} {
7911        return {}
7912    }
7913    return [list target_scrollpos [$ctext index @0,0]]
7914}
7915
7916proc savectextpos {} {
7917    global ctext
7918
7919    return [list target_scrollpos [$ctext index @0,0]]
7920}
7921
7922proc maybe_scroll_ctext {ateof} {
7923    global ctext target_scrollpos
7924
7925    if {![info exists target_scrollpos]} return
7926    if {!$ateof} {
7927        set nlines [expr {[winfo height $ctext]
7928                          / [font metrics textfont -linespace]}]
7929        if {[$ctext compare "$target_scrollpos + $nlines lines" <= end]} return
7930    }
7931    $ctext yview $target_scrollpos
7932    unset target_scrollpos
7933}
7934
7935proc setinlist {var i val} {
7936    global $var
7937
7938    while {[llength [set $var]] < $i} {
7939        lappend $var {}
7940    }
7941    if {[llength [set $var]] == $i} {
7942        lappend $var $val
7943    } else {
7944        lset $var $i $val
7945    }
7946}
7947
7948proc makediffhdr {fname ids} {
7949    global ctext curdiffstart treediffs diffencoding
7950    global ctext_file_names jump_to_here targetline diffline
7951
7952    set fname [encoding convertfrom $fname]
7953    set diffencoding [get_path_encoding $fname]
7954    set i [lsearch -exact $treediffs($ids) $fname]
7955    if {$i >= 0} {
7956        setinlist difffilestart $i $curdiffstart
7957    }
7958    lset ctext_file_names end $fname
7959    set l [expr {(78 - [string length $fname]) / 2}]
7960    set pad [string range "----------------------------------------" 1 $l]
7961    $ctext insert $curdiffstart "$pad $fname $pad" filesep
7962    set targetline {}
7963    if {$jump_to_here ne {} && [lindex $jump_to_here 0] eq $fname} {
7964        set targetline [lindex $jump_to_here 1]
7965    }
7966    set diffline 0
7967}
7968
7969proc blobdiffmaybeseehere {ateof} {
7970    global diffseehere
7971    if {$diffseehere >= 0} {
7972        mark_ctext_line [lindex [split $diffseehere .] 0]
7973    }
7974    maybe_scroll_ctext $ateof
7975}
7976
7977proc getblobdiffline {bdf ids} {
7978    global diffids blobdifffd
7979    global ctext
7980
7981    set nr 0
7982    $ctext conf -state normal
7983    while {[incr nr] <= 1000 && [gets $bdf line] >= 0} {
7984        if {$ids != $diffids || $bdf != $blobdifffd($ids)} {
7985            catch {close $bdf}
7986            return 0
7987        }
7988        parseblobdiffline $ids $line
7989    }
7990    $ctext conf -state disabled
7991    blobdiffmaybeseehere [eof $bdf]
7992    if {[eof $bdf]} {
7993        catch {close $bdf}
7994        return 0
7995    }
7996    return [expr {$nr >= 1000? 2: 1}]
7997}
7998
7999proc parseblobdiffline {ids line} {
8000    global ctext curdiffstart
8001    global diffnexthead diffnextnote difffilestart
8002    global ctext_file_names ctext_file_lines
8003    global diffinhdr treediffs mergemax diffnparents
8004    global diffencoding jump_to_here targetline diffline currdiffsubmod
8005    global worddiff diffseehere
8006
8007    if {![string compare -length 5 "diff " $line]} {
8008        if {![regexp {^diff (--cc|--git) } $line m type]} {
8009            set line [encoding convertfrom $line]
8010            $ctext insert end "$line\n" hunksep
8011            continue
8012        }
8013        # start of a new file
8014        set diffinhdr 1
8015        $ctext insert end "\n"
8016        set curdiffstart [$ctext index "end - 1c"]
8017        lappend ctext_file_names ""
8018        lappend ctext_file_lines [lindex [split $curdiffstart "."] 0]
8019        $ctext insert end "\n" filesep
8020
8021        if {$type eq "--cc"} {
8022            # start of a new file in a merge diff
8023            set fname [string range $line 10 end]
8024            if {[lsearch -exact $treediffs($ids) $fname] < 0} {
8025                lappend treediffs($ids) $fname
8026                add_flist [list $fname]
8027            }
8028
8029        } else {
8030            set line [string range $line 11 end]
8031            # If the name hasn't changed the length will be odd,
8032            # the middle char will be a space, and the two bits either
8033            # side will be a/name and b/name, or "a/name" and "b/name".
8034            # If the name has changed we'll get "rename from" and
8035            # "rename to" or "copy from" and "copy to" lines following
8036            # this, and we'll use them to get the filenames.
8037            # This complexity is necessary because spaces in the
8038            # filename(s) don't get escaped.
8039            set l [string length $line]
8040            set i [expr {$l / 2}]
8041            if {!(($l & 1) && [string index $line $i] eq " " &&
8042                  [string range $line 2 [expr {$i - 1}]] eq \
8043                      [string range $line [expr {$i + 3}] end])} {
8044                return
8045            }
8046            # unescape if quoted and chop off the a/ from the front
8047            if {[string index $line 0] eq "\""} {
8048                set fname [string range [lindex $line 0] 2 end]
8049            } else {
8050                set fname [string range $line 2 [expr {$i - 1}]]
8051            }
8052        }
8053        makediffhdr $fname $ids
8054
8055    } elseif {![string compare -length 16 "* Unmerged path " $line]} {
8056        set fname [encoding convertfrom [string range $line 16 end]]
8057        $ctext insert end "\n"
8058        set curdiffstart [$ctext index "end - 1c"]
8059        lappend ctext_file_names $fname
8060        lappend ctext_file_lines [lindex [split $curdiffstart "."] 0]
8061        $ctext insert end "$line\n" filesep
8062        set i [lsearch -exact $treediffs($ids) $fname]
8063        if {$i >= 0} {
8064            setinlist difffilestart $i $curdiffstart
8065        }
8066
8067    } elseif {![string compare -length 2 "@@" $line]} {
8068        regexp {^@@+} $line ats
8069        set line [encoding convertfrom $diffencoding $line]
8070        $ctext insert end "$line\n" hunksep
8071        if {[regexp { \+(\d+),\d+ @@} $line m nl]} {
8072            set diffline $nl
8073        }
8074        set diffnparents [expr {[string length $ats] - 1}]
8075        set diffinhdr 0
8076
8077    } elseif {![string compare -length 10 "Submodule " $line]} {
8078        # start of a new submodule
8079        if {[regexp -indices "\[0-9a-f\]+\\.\\." $line nameend]} {
8080            set fname [string range $line 10 [expr [lindex $nameend 0] - 2]]
8081        } else {
8082            set fname [string range $line 10 [expr [string first "contains " $line] - 2]]
8083        }
8084        if {$currdiffsubmod != $fname} {
8085            $ctext insert end "\n";     # Add newline after commit message
8086        }
8087        set curdiffstart [$ctext index "end - 1c"]
8088        lappend ctext_file_names ""
8089        if {$currdiffsubmod != $fname} {
8090            lappend ctext_file_lines $fname
8091            makediffhdr $fname $ids
8092            set currdiffsubmod $fname
8093            $ctext insert end "\n$line\n" filesep
8094        } else {
8095            $ctext insert end "$line\n" filesep
8096        }
8097    } elseif {![string compare -length 3 "  >" $line]} {
8098        set $currdiffsubmod ""
8099        set line [encoding convertfrom $diffencoding $line]
8100        $ctext insert end "$line\n" dresult
8101    } elseif {![string compare -length 3 "  <" $line]} {
8102        set $currdiffsubmod ""
8103        set line [encoding convertfrom $diffencoding $line]
8104        $ctext insert end "$line\n" d0
8105    } elseif {$diffinhdr} {
8106        if {![string compare -length 12 "rename from " $line]} {
8107            set fname [string range $line [expr 6 + [string first " from " $line] ] end]
8108            if {[string index $fname 0] eq "\""} {
8109                set fname [lindex $fname 0]
8110            }
8111            set fname [encoding convertfrom $fname]
8112            set i [lsearch -exact $treediffs($ids) $fname]
8113            if {$i >= 0} {
8114                setinlist difffilestart $i $curdiffstart
8115            }
8116        } elseif {![string compare -length 10 $line "rename to "] ||
8117                  ![string compare -length 8 $line "copy to "]} {
8118            set fname [string range $line [expr 4 + [string first " to " $line] ] end]
8119            if {[string index $fname 0] eq "\""} {
8120                set fname [lindex $fname 0]
8121            }
8122            makediffhdr $fname $ids
8123        } elseif {[string compare -length 3 $line "---"] == 0} {
8124            # do nothing
8125            return
8126        } elseif {[string compare -length 3 $line "+++"] == 0} {
8127            set diffinhdr 0
8128            return
8129        }
8130        $ctext insert end "$line\n" filesep
8131
8132    } else {
8133        set line [string map {\x1A ^Z} \
8134                      [encoding convertfrom $diffencoding $line]]
8135        # parse the prefix - one ' ', '-' or '+' for each parent
8136        set prefix [string range $line 0 [expr {$diffnparents - 1}]]
8137        set tag [expr {$diffnparents > 1? "m": "d"}]
8138        set dowords [expr {$worddiff ne [mc "Line diff"] && $diffnparents == 1}]
8139        set words_pre_markup ""
8140        set words_post_markup ""
8141        if {[string trim $prefix " -+"] eq {}} {
8142            # prefix only has " ", "-" and "+" in it: normal diff line
8143            set num [string first "-" $prefix]
8144            if {$dowords} {
8145                set line [string range $line 1 end]
8146            }
8147            if {$num >= 0} {
8148                # removed line, first parent with line is $num
8149                if {$num >= $mergemax} {
8150                    set num "max"
8151                }
8152                if {$dowords && $worddiff eq [mc "Markup words"]} {
8153                    $ctext insert end "\[-$line-\]" $tag$num
8154                } else {
8155                    $ctext insert end "$line" $tag$num
8156                }
8157                if {!$dowords} {
8158                    $ctext insert end "\n" $tag$num
8159                }
8160            } else {
8161                set tags {}
8162                if {[string first "+" $prefix] >= 0} {
8163                    # added line
8164                    lappend tags ${tag}result
8165                    if {$diffnparents > 1} {
8166                        set num [string first " " $prefix]
8167                        if {$num >= 0} {
8168                            if {$num >= $mergemax} {
8169                                set num "max"
8170                            }
8171                            lappend tags m$num
8172                        }
8173                    }
8174                    set words_pre_markup "{+"
8175                    set words_post_markup "+}"
8176                }
8177                if {$targetline ne {}} {
8178                    if {$diffline == $targetline} {
8179                        set diffseehere [$ctext index "end - 1 chars"]
8180                        set targetline {}
8181                    } else {
8182                        incr diffline
8183                    }
8184                }
8185                if {$dowords && $worddiff eq [mc "Markup words"]} {
8186                    $ctext insert end "$words_pre_markup$line$words_post_markup" $tags
8187                } else {
8188                    $ctext insert end "$line" $tags
8189                }
8190                if {!$dowords} {
8191                    $ctext insert end "\n" $tags
8192                }
8193            }
8194        } elseif {$dowords && $prefix eq "~"} {
8195            $ctext insert end "\n" {}
8196        } else {
8197            # "\ No newline at end of file",
8198            # or something else we don't recognize
8199            $ctext insert end "$line\n" hunksep
8200        }
8201    }
8202}
8203
8204proc changediffdisp {} {
8205    global ctext diffelide
8206
8207    $ctext tag conf d0 -elide [lindex $diffelide 0]
8208    $ctext tag conf dresult -elide [lindex $diffelide 1]
8209}
8210
8211proc highlightfile {cline} {
8212    global cflist cflist_top
8213
8214    if {![info exists cflist_top]} return
8215
8216    $cflist tag remove highlight $cflist_top.0 "$cflist_top.0 lineend"
8217    $cflist tag add highlight $cline.0 "$cline.0 lineend"
8218    $cflist see $cline.0
8219    set cflist_top $cline
8220}
8221
8222proc highlightfile_for_scrollpos {topidx} {
8223    global cmitmode difffilestart
8224
8225    if {$cmitmode eq "tree"} return
8226    if {![info exists difffilestart]} return
8227
8228    set top [lindex [split $topidx .] 0]
8229    if {$difffilestart eq {} || $top < [lindex $difffilestart 0]} {
8230        highlightfile 0
8231    } else {
8232        highlightfile [expr {[bsearch $difffilestart $top] + 2}]
8233    }
8234}
8235
8236proc prevfile {} {
8237    global difffilestart ctext cmitmode
8238
8239    if {$cmitmode eq "tree"} return
8240    set prev 0.0
8241    set here [$ctext index @0,0]
8242    foreach loc $difffilestart {
8243        if {[$ctext compare $loc >= $here]} {
8244            $ctext yview $prev
8245            return
8246        }
8247        set prev $loc
8248    }
8249    $ctext yview $prev
8250}
8251
8252proc nextfile {} {
8253    global difffilestart ctext cmitmode
8254
8255    if {$cmitmode eq "tree"} return
8256    set here [$ctext index @0,0]
8257    foreach loc $difffilestart {
8258        if {[$ctext compare $loc > $here]} {
8259            $ctext yview $loc
8260            return
8261        }
8262    }
8263}
8264
8265proc clear_ctext {{first 1.0}} {
8266    global ctext smarktop smarkbot
8267    global ctext_file_names ctext_file_lines
8268    global pendinglinks
8269
8270    set l [lindex [split $first .] 0]
8271    if {![info exists smarktop] || [$ctext compare $first < $smarktop.0]} {
8272        set smarktop $l
8273    }
8274    if {![info exists smarkbot] || [$ctext compare $first < $smarkbot.0]} {
8275        set smarkbot $l
8276    }
8277    $ctext delete $first end
8278    if {$first eq "1.0"} {
8279        catch {unset pendinglinks}
8280    }
8281    set ctext_file_names {}
8282    set ctext_file_lines {}
8283}
8284
8285proc settabs {{firstab {}}} {
8286    global firsttabstop tabstop ctext have_tk85
8287
8288    if {$firstab ne {} && $have_tk85} {
8289        set firsttabstop $firstab
8290    }
8291    set w [font measure textfont "0"]
8292    if {$firsttabstop != 0} {
8293        $ctext conf -tabs [list [expr {($firsttabstop + $tabstop) * $w}] \
8294                               [expr {($firsttabstop + 2 * $tabstop) * $w}]]
8295    } elseif {$have_tk85 || $tabstop != 8} {
8296        $ctext conf -tabs [expr {$tabstop * $w}]
8297    } else {
8298        $ctext conf -tabs {}
8299    }
8300}
8301
8302proc incrsearch {name ix op} {
8303    global ctext searchstring searchdirn
8304
8305    if {[catch {$ctext index anchor}]} {
8306        # no anchor set, use start of selection, or of visible area
8307        set sel [$ctext tag ranges sel]
8308        if {$sel ne {}} {
8309            $ctext mark set anchor [lindex $sel 0]
8310        } elseif {$searchdirn eq "-forwards"} {
8311            $ctext mark set anchor @0,0
8312        } else {
8313            $ctext mark set anchor @0,[winfo height $ctext]
8314        }
8315    }
8316    if {$searchstring ne {}} {
8317        set here [$ctext search -count mlen $searchdirn -- $searchstring anchor]
8318        if {$here ne {}} {
8319            $ctext see $here
8320            set mend "$here + $mlen c"
8321            $ctext tag remove sel 1.0 end
8322            $ctext tag add sel $here $mend
8323            suppress_highlighting_file_for_current_scrollpos
8324            highlightfile_for_scrollpos $here
8325        }
8326    }
8327    rehighlight_search_results
8328}
8329
8330proc dosearch {} {
8331    global sstring ctext searchstring searchdirn
8332
8333    focus $sstring
8334    $sstring icursor end
8335    set searchdirn -forwards
8336    if {$searchstring ne {}} {
8337        set sel [$ctext tag ranges sel]
8338        if {$sel ne {}} {
8339            set start "[lindex $sel 0] + 1c"
8340        } elseif {[catch {set start [$ctext index anchor]}]} {
8341            set start "@0,0"
8342        }
8343        set match [$ctext search -count mlen -- $searchstring $start]
8344        $ctext tag remove sel 1.0 end
8345        if {$match eq {}} {
8346            bell
8347            return
8348        }
8349        $ctext see $match
8350        suppress_highlighting_file_for_current_scrollpos
8351        highlightfile_for_scrollpos $match
8352        set mend "$match + $mlen c"
8353        $ctext tag add sel $match $mend
8354        $ctext mark unset anchor
8355        rehighlight_search_results
8356    }
8357}
8358
8359proc dosearchback {} {
8360    global sstring ctext searchstring searchdirn
8361
8362    focus $sstring
8363    $sstring icursor end
8364    set searchdirn -backwards
8365    if {$searchstring ne {}} {
8366        set sel [$ctext tag ranges sel]
8367        if {$sel ne {}} {
8368            set start [lindex $sel 0]
8369        } elseif {[catch {set start [$ctext index anchor]}]} {
8370            set start @0,[winfo height $ctext]
8371        }
8372        set match [$ctext search -backwards -count ml -- $searchstring $start]
8373        $ctext tag remove sel 1.0 end
8374        if {$match eq {}} {
8375            bell
8376            return
8377        }
8378        $ctext see $match
8379        suppress_highlighting_file_for_current_scrollpos
8380        highlightfile_for_scrollpos $match
8381        set mend "$match + $ml c"
8382        $ctext tag add sel $match $mend
8383        $ctext mark unset anchor
8384        rehighlight_search_results
8385    }
8386}
8387
8388proc rehighlight_search_results {} {
8389    global ctext searchstring
8390
8391    $ctext tag remove found 1.0 end
8392    $ctext tag remove currentsearchhit 1.0 end
8393
8394    if {$searchstring ne {}} {
8395        searchmarkvisible 1
8396    }
8397}
8398
8399proc searchmark {first last} {
8400    global ctext searchstring
8401
8402    set sel [$ctext tag ranges sel]
8403
8404    set mend $first.0
8405    while {1} {
8406        set match [$ctext search -count mlen -- $searchstring $mend $last.end]
8407        if {$match eq {}} break
8408        set mend "$match + $mlen c"
8409        if {$sel ne {} && [$ctext compare $match == [lindex $sel 0]]} {
8410            $ctext tag add currentsearchhit $match $mend
8411        } else {
8412            $ctext tag add found $match $mend
8413        }
8414    }
8415}
8416
8417proc searchmarkvisible {doall} {
8418    global ctext smarktop smarkbot
8419
8420    set topline [lindex [split [$ctext index @0,0] .] 0]
8421    set botline [lindex [split [$ctext index @0,[winfo height $ctext]] .] 0]
8422    if {$doall || $botline < $smarktop || $topline > $smarkbot} {
8423        # no overlap with previous
8424        searchmark $topline $botline
8425        set smarktop $topline
8426        set smarkbot $botline
8427    } else {
8428        if {$topline < $smarktop} {
8429            searchmark $topline [expr {$smarktop-1}]
8430            set smarktop $topline
8431        }
8432        if {$botline > $smarkbot} {
8433            searchmark [expr {$smarkbot+1}] $botline
8434            set smarkbot $botline
8435        }
8436    }
8437}
8438
8439proc suppress_highlighting_file_for_current_scrollpos {} {
8440    global ctext suppress_highlighting_file_for_this_scrollpos
8441
8442    set suppress_highlighting_file_for_this_scrollpos [$ctext index @0,0]
8443}
8444
8445proc scrolltext {f0 f1} {
8446    global searchstring cmitmode ctext
8447    global suppress_highlighting_file_for_this_scrollpos
8448
8449    set topidx [$ctext index @0,0]
8450    if {![info exists suppress_highlighting_file_for_this_scrollpos]
8451        || $topidx ne $suppress_highlighting_file_for_this_scrollpos} {
8452        highlightfile_for_scrollpos $topidx
8453    }
8454
8455    catch {unset suppress_highlighting_file_for_this_scrollpos}
8456
8457    .bleft.bottom.sb set $f0 $f1
8458    if {$searchstring ne {}} {
8459        searchmarkvisible 0
8460    }
8461}
8462
8463proc setcoords {} {
8464    global linespc charspc canvx0 canvy0
8465    global xspc1 xspc2 lthickness
8466
8467    set linespc [font metrics mainfont -linespace]
8468    set charspc [font measure mainfont "m"]
8469    set canvy0 [expr {int(3 + 0.5 * $linespc)}]
8470    set canvx0 [expr {int(3 + 0.5 * $linespc)}]
8471    set lthickness [expr {int($linespc / 9) + 1}]
8472    set xspc1(0) $linespc
8473    set xspc2 $linespc
8474}
8475
8476proc redisplay {} {
8477    global canv
8478    global selectedline
8479
8480    set ymax [lindex [$canv cget -scrollregion] 3]
8481    if {$ymax eq {} || $ymax == 0} return
8482    set span [$canv yview]
8483    clear_display
8484    setcanvscroll
8485    allcanvs yview moveto [lindex $span 0]
8486    drawvisible
8487    if {$selectedline ne {}} {
8488        selectline $selectedline 0
8489        allcanvs yview moveto [lindex $span 0]
8490    }
8491}
8492
8493proc parsefont {f n} {
8494    global fontattr
8495
8496    set fontattr($f,family) [lindex $n 0]
8497    set s [lindex $n 1]
8498    if {$s eq {} || $s == 0} {
8499        set s 10
8500    } elseif {$s < 0} {
8501        set s [expr {int(-$s / [winfo fpixels . 1p] + 0.5)}]
8502    }
8503    set fontattr($f,size) $s
8504    set fontattr($f,weight) normal
8505    set fontattr($f,slant) roman
8506    foreach style [lrange $n 2 end] {
8507        switch -- $style {
8508            "normal" -
8509            "bold"   {set fontattr($f,weight) $style}
8510            "roman" -
8511            "italic" {set fontattr($f,slant) $style}
8512        }
8513    }
8514}
8515
8516proc fontflags {f {isbold 0}} {
8517    global fontattr
8518
8519    return [list -family $fontattr($f,family) -size $fontattr($f,size) \
8520                -weight [expr {$isbold? "bold": $fontattr($f,weight)}] \
8521                -slant $fontattr($f,slant)]
8522}
8523
8524proc fontname {f} {
8525    global fontattr
8526
8527    set n [list $fontattr($f,family) $fontattr($f,size)]
8528    if {$fontattr($f,weight) eq "bold"} {
8529        lappend n "bold"
8530    }
8531    if {$fontattr($f,slant) eq "italic"} {
8532        lappend n "italic"
8533    }
8534    return $n
8535}
8536
8537proc incrfont {inc} {
8538    global mainfont textfont ctext canv cflist showrefstop
8539    global stopped entries fontattr
8540
8541    unmarkmatches
8542    set s $fontattr(mainfont,size)
8543    incr s $inc
8544    if {$s < 1} {
8545        set s 1
8546    }
8547    set fontattr(mainfont,size) $s
8548    font config mainfont -size $s
8549    font config mainfontbold -size $s
8550    set mainfont [fontname mainfont]
8551    set s $fontattr(textfont,size)
8552    incr s $inc
8553    if {$s < 1} {
8554        set s 1
8555    }
8556    set fontattr(textfont,size) $s
8557    font config textfont -size $s
8558    font config textfontbold -size $s
8559    set textfont [fontname textfont]
8560    setcoords
8561    settabs
8562    redisplay
8563}
8564
8565proc clearsha1 {} {
8566    global sha1entry sha1string
8567    if {[string length $sha1string] == 40} {
8568        $sha1entry delete 0 end
8569    }
8570}
8571
8572proc sha1change {n1 n2 op} {
8573    global sha1string currentid sha1but
8574    if {$sha1string == {}
8575        || ([info exists currentid] && $sha1string == $currentid)} {
8576        set state disabled
8577    } else {
8578        set state normal
8579    }
8580    if {[$sha1but cget -state] == $state} return
8581    if {$state == "normal"} {
8582        $sha1but conf -state normal -relief raised -text "[mc "Goto:"] "
8583    } else {
8584        $sha1but conf -state disabled -relief flat -text "[mc "SHA1 ID:"] "
8585    }
8586}
8587
8588proc gotocommit {} {
8589    global sha1string tagids headids curview varcid
8590
8591    if {$sha1string == {}
8592        || ([info exists currentid] && $sha1string == $currentid)} return
8593    if {[info exists tagids($sha1string)]} {
8594        set id $tagids($sha1string)
8595    } elseif {[info exists headids($sha1string)]} {
8596        set id $headids($sha1string)
8597    } else {
8598        set id [string tolower $sha1string]
8599        if {[regexp {^[0-9a-f]{4,39}$} $id]} {
8600            set matches [longid $id]
8601            if {$matches ne {}} {
8602                if {[llength $matches] > 1} {
8603                    error_popup [mc "Short SHA1 id %s is ambiguous" $id]
8604                    return
8605                }
8606                set id [lindex $matches 0]
8607            }
8608        } else {
8609            if {[catch {set id [exec git rev-parse --verify $sha1string]}]} {
8610                error_popup [mc "Revision %s is not known" $sha1string]
8611                return
8612            }
8613        }
8614    }
8615    if {[commitinview $id $curview]} {
8616        selectline [rowofcommit $id] 1
8617        return
8618    }
8619    if {[regexp {^[0-9a-fA-F]{4,}$} $sha1string]} {
8620        set msg [mc "SHA1 id %s is not known" $sha1string]
8621    } else {
8622        set msg [mc "Revision %s is not in the current view" $sha1string]
8623    }
8624    error_popup $msg
8625}
8626
8627proc lineenter {x y id} {
8628    global hoverx hovery hoverid hovertimer
8629    global commitinfo canv
8630
8631    if {![info exists commitinfo($id)] && ![getcommit $id]} return
8632    set hoverx $x
8633    set hovery $y
8634    set hoverid $id
8635    if {[info exists hovertimer]} {
8636        after cancel $hovertimer
8637    }
8638    set hovertimer [after 500 linehover]
8639    $canv delete hover
8640}
8641
8642proc linemotion {x y id} {
8643    global hoverx hovery hoverid hovertimer
8644
8645    if {[info exists hoverid] && $id == $hoverid} {
8646        set hoverx $x
8647        set hovery $y
8648        if {[info exists hovertimer]} {
8649            after cancel $hovertimer
8650        }
8651        set hovertimer [after 500 linehover]
8652    }
8653}
8654
8655proc lineleave {id} {
8656    global hoverid hovertimer canv
8657
8658    if {[info exists hoverid] && $id == $hoverid} {
8659        $canv delete hover
8660        if {[info exists hovertimer]} {
8661            after cancel $hovertimer
8662            unset hovertimer
8663        }
8664        unset hoverid
8665    }
8666}
8667
8668proc linehover {} {
8669    global hoverx hovery hoverid hovertimer
8670    global canv linespc lthickness
8671    global linehoverbgcolor linehoverfgcolor linehoveroutlinecolor
8672
8673    global commitinfo
8674
8675    set text [lindex $commitinfo($hoverid) 0]
8676    set ymax [lindex [$canv cget -scrollregion] 3]
8677    if {$ymax == {}} return
8678    set yfrac [lindex [$canv yview] 0]
8679    set x [expr {$hoverx + 2 * $linespc}]
8680    set y [expr {$hovery + $yfrac * $ymax - $linespc / 2}]
8681    set x0 [expr {$x - 2 * $lthickness}]
8682    set y0 [expr {$y - 2 * $lthickness}]
8683    set x1 [expr {$x + [font measure mainfont $text] + 2 * $lthickness}]
8684    set y1 [expr {$y + $linespc + 2 * $lthickness}]
8685    set t [$canv create rectangle $x0 $y0 $x1 $y1 \
8686               -fill $linehoverbgcolor -outline $linehoveroutlinecolor \
8687               -width 1 -tags hover]
8688    $canv raise $t
8689    set t [$canv create text $x $y -anchor nw -text $text -tags hover \
8690               -font mainfont -fill $linehoverfgcolor]
8691    $canv raise $t
8692}
8693
8694proc clickisonarrow {id y} {
8695    global lthickness
8696
8697    set ranges [rowranges $id]
8698    set thresh [expr {2 * $lthickness + 6}]
8699    set n [expr {[llength $ranges] - 1}]
8700    for {set i 1} {$i < $n} {incr i} {
8701        set row [lindex $ranges $i]
8702        if {abs([yc $row] - $y) < $thresh} {
8703            return $i
8704        }
8705    }
8706    return {}
8707}
8708
8709proc arrowjump {id n y} {
8710    global canv
8711
8712    # 1 <-> 2, 3 <-> 4, etc...
8713    set n [expr {(($n - 1) ^ 1) + 1}]
8714    set row [lindex [rowranges $id] $n]
8715    set yt [yc $row]
8716    set ymax [lindex [$canv cget -scrollregion] 3]
8717    if {$ymax eq {} || $ymax <= 0} return
8718    set view [$canv yview]
8719    set yspan [expr {[lindex $view 1] - [lindex $view 0]}]
8720    set yfrac [expr {$yt / $ymax - $yspan / 2}]
8721    if {$yfrac < 0} {
8722        set yfrac 0
8723    }
8724    allcanvs yview moveto $yfrac
8725}
8726
8727proc lineclick {x y id isnew} {
8728    global ctext commitinfo children canv thickerline curview
8729
8730    if {![info exists commitinfo($id)] && ![getcommit $id]} return
8731    unmarkmatches
8732    unselectline
8733    normalline
8734    $canv delete hover
8735    # draw this line thicker than normal
8736    set thickerline $id
8737    drawlines $id
8738    if {$isnew} {
8739        set ymax [lindex [$canv cget -scrollregion] 3]
8740        if {$ymax eq {}} return
8741        set yfrac [lindex [$canv yview] 0]
8742        set y [expr {$y + $yfrac * $ymax}]
8743    }
8744    set dirn [clickisonarrow $id $y]
8745    if {$dirn ne {}} {
8746        arrowjump $id $dirn $y
8747        return
8748    }
8749
8750    if {$isnew} {
8751        addtohistory [list lineclick $x $y $id 0] savectextpos
8752    }
8753    # fill the details pane with info about this line
8754    $ctext conf -state normal
8755    clear_ctext
8756    settabs 0
8757    $ctext insert end "[mc "Parent"]:\t"
8758    $ctext insert end $id link0
8759    setlink $id link0
8760    set info $commitinfo($id)
8761    $ctext insert end "\n\t[lindex $info 0]\n"
8762    $ctext insert end "\t[mc "Author"]:\t[lindex $info 1]\n"
8763    set date [formatdate [lindex $info 2]]
8764    $ctext insert end "\t[mc "Date"]:\t$date\n"
8765    set kids $children($curview,$id)
8766    if {$kids ne {}} {
8767        $ctext insert end "\n[mc "Children"]:"
8768        set i 0
8769        foreach child $kids {
8770            incr i
8771            if {![info exists commitinfo($child)] && ![getcommit $child]} continue
8772            set info $commitinfo($child)
8773            $ctext insert end "\n\t"
8774            $ctext insert end $child link$i
8775            setlink $child link$i
8776            $ctext insert end "\n\t[lindex $info 0]"
8777            $ctext insert end "\n\t[mc "Author"]:\t[lindex $info 1]"
8778            set date [formatdate [lindex $info 2]]
8779            $ctext insert end "\n\t[mc "Date"]:\t$date\n"
8780        }
8781    }
8782    maybe_scroll_ctext 1
8783    $ctext conf -state disabled
8784    init_flist {}
8785}
8786
8787proc normalline {} {
8788    global thickerline
8789    if {[info exists thickerline]} {
8790        set id $thickerline
8791        unset thickerline
8792        drawlines $id
8793    }
8794}
8795
8796proc selbyid {id {isnew 1}} {
8797    global curview
8798    if {[commitinview $id $curview]} {
8799        selectline [rowofcommit $id] $isnew
8800    }
8801}
8802
8803proc mstime {} {
8804    global startmstime
8805    if {![info exists startmstime]} {
8806        set startmstime [clock clicks -milliseconds]
8807    }
8808    return [format "%.3f" [expr {([clock click -milliseconds] - $startmstime) / 1000.0}]]
8809}
8810
8811proc rowmenu {x y id} {
8812    global rowctxmenu selectedline rowmenuid curview
8813    global nullid nullid2 fakerowmenu mainhead markedid
8814
8815    stopfinding
8816    set rowmenuid $id
8817    if {$selectedline eq {} || [rowofcommit $id] eq $selectedline} {
8818        set state disabled
8819    } else {
8820        set state normal
8821    }
8822    if {[info exists markedid] && $markedid ne $id} {
8823        set mstate normal
8824    } else {
8825        set mstate disabled
8826    }
8827    if {$id ne $nullid && $id ne $nullid2} {
8828        set menu $rowctxmenu
8829        if {$mainhead ne {}} {
8830            $menu entryconfigure 7 -label [mc "Reset %s branch to here" $mainhead] -state normal
8831        } else {
8832            $menu entryconfigure 7 -label [mc "Detached head: can't reset" $mainhead] -state disabled
8833        }
8834        $menu entryconfigure 9 -state $mstate
8835        $menu entryconfigure 10 -state $mstate
8836        $menu entryconfigure 11 -state $mstate
8837    } else {
8838        set menu $fakerowmenu
8839    }
8840    $menu entryconfigure [mca "Diff this -> selected"] -state $state
8841    $menu entryconfigure [mca "Diff selected -> this"] -state $state
8842    $menu entryconfigure [mca "Make patch"] -state $state
8843    $menu entryconfigure [mca "Diff this -> marked commit"] -state $mstate
8844    $menu entryconfigure [mca "Diff marked commit -> this"] -state $mstate
8845    tk_popup $menu $x $y
8846}
8847
8848proc markhere {} {
8849    global rowmenuid markedid canv
8850
8851    set markedid $rowmenuid
8852    make_idmark $markedid
8853}
8854
8855proc gotomark {} {
8856    global markedid
8857
8858    if {[info exists markedid]} {
8859        selbyid $markedid
8860    }
8861}
8862
8863proc replace_by_kids {l r} {
8864    global curview children
8865
8866    set id [commitonrow $r]
8867    set l [lreplace $l 0 0]
8868    foreach kid $children($curview,$id) {
8869        lappend l [rowofcommit $kid]
8870    }
8871    return [lsort -integer -decreasing -unique $l]
8872}
8873
8874proc find_common_desc {} {
8875    global markedid rowmenuid curview children
8876
8877    if {![info exists markedid]} return
8878    if {![commitinview $markedid $curview] ||
8879        ![commitinview $rowmenuid $curview]} return
8880    #set t1 [clock clicks -milliseconds]
8881    set l1 [list [rowofcommit $markedid]]
8882    set l2 [list [rowofcommit $rowmenuid]]
8883    while 1 {
8884        set r1 [lindex $l1 0]
8885        set r2 [lindex $l2 0]
8886        if {$r1 eq {} || $r2 eq {}} break
8887        if {$r1 == $r2} {
8888            selectline $r1 1
8889            break
8890        }
8891        if {$r1 > $r2} {
8892            set l1 [replace_by_kids $l1 $r1]
8893        } else {
8894            set l2 [replace_by_kids $l2 $r2]
8895        }
8896    }
8897    #set t2 [clock clicks -milliseconds]
8898    #puts "took [expr {$t2-$t1}]ms"
8899}
8900
8901proc compare_commits {} {
8902    global markedid rowmenuid curview children
8903
8904    if {![info exists markedid]} return
8905    if {![commitinview $markedid $curview]} return
8906    addtohistory [list do_cmp_commits $markedid $rowmenuid]
8907    do_cmp_commits $markedid $rowmenuid
8908}
8909
8910proc getpatchid {id} {
8911    global patchids
8912
8913    if {![info exists patchids($id)]} {
8914        set cmd [diffcmd [list $id] {-p --root}]
8915        # trim off the initial "|"
8916        set cmd [lrange $cmd 1 end]
8917        if {[catch {
8918            set x [eval exec $cmd | git patch-id]
8919            set patchids($id) [lindex $x 0]
8920        }]} {
8921            set patchids($id) "error"
8922        }
8923    }
8924    return $patchids($id)
8925}
8926
8927proc do_cmp_commits {a b} {
8928    global ctext curview parents children patchids commitinfo
8929
8930    $ctext conf -state normal
8931    clear_ctext
8932    init_flist {}
8933    for {set i 0} {$i < 100} {incr i} {
8934        set skipa 0
8935        set skipb 0
8936        if {[llength $parents($curview,$a)] > 1} {
8937            appendshortlink $a [mc "Skipping merge commit "] "\n"
8938            set skipa 1
8939        } else {
8940            set patcha [getpatchid $a]
8941        }
8942        if {[llength $parents($curview,$b)] > 1} {
8943            appendshortlink $b [mc "Skipping merge commit "] "\n"
8944            set skipb 1
8945        } else {
8946            set patchb [getpatchid $b]
8947        }
8948        if {!$skipa && !$skipb} {
8949            set heada [lindex $commitinfo($a) 0]
8950            set headb [lindex $commitinfo($b) 0]
8951            if {$patcha eq "error"} {
8952                appendshortlink $a [mc "Error getting patch ID for "] \
8953                    [mc " - stopping\n"]
8954                break
8955            }
8956            if {$patchb eq "error"} {
8957                appendshortlink $b [mc "Error getting patch ID for "] \
8958                    [mc " - stopping\n"]
8959                break
8960            }
8961            if {$patcha eq $patchb} {
8962                if {$heada eq $headb} {
8963                    appendshortlink $a [mc "Commit "]
8964                    appendshortlink $b " == " "  $heada\n"
8965                } else {
8966                    appendshortlink $a [mc "Commit "] "  $heada\n"
8967                    appendshortlink $b [mc " is the same patch as\n       "] \
8968                        "  $headb\n"
8969                }
8970                set skipa 1
8971                set skipb 1
8972            } else {
8973                $ctext insert end "\n"
8974                appendshortlink $a [mc "Commit "] "  $heada\n"
8975                appendshortlink $b [mc " differs from\n       "] \
8976                    "  $headb\n"
8977                $ctext insert end [mc "Diff of commits:\n\n"]
8978                $ctext conf -state disabled
8979                update
8980                diffcommits $a $b
8981                return
8982            }
8983        }
8984        if {$skipa} {
8985            set kids [real_children $curview,$a]
8986            if {[llength $kids] != 1} {
8987                $ctext insert end "\n"
8988                appendshortlink $a [mc "Commit "] \
8989                    [mc " has %s children - stopping\n" [llength $kids]]
8990                break
8991            }
8992            set a [lindex $kids 0]
8993        }
8994        if {$skipb} {
8995            set kids [real_children $curview,$b]
8996            if {[llength $kids] != 1} {
8997                appendshortlink $b [mc "Commit "] \
8998                    [mc " has %s children - stopping\n" [llength $kids]]
8999                break
9000            }
9001            set b [lindex $kids 0]
9002        }
9003    }
9004    $ctext conf -state disabled
9005}
9006
9007proc diffcommits {a b} {
9008    global diffcontext diffids blobdifffd diffinhdr currdiffsubmod
9009
9010    set tmpdir [gitknewtmpdir]
9011    set fna [file join $tmpdir "commit-[string range $a 0 7]"]
9012    set fnb [file join $tmpdir "commit-[string range $b 0 7]"]
9013    if {[catch {
9014        exec git diff-tree -p --pretty $a >$fna
9015        exec git diff-tree -p --pretty $b >$fnb
9016    } err]} {
9017        error_popup [mc "Error writing commit to file: %s" $err]
9018        return
9019    }
9020    if {[catch {
9021        set fd [open "| diff -U$diffcontext $fna $fnb" r]
9022    } err]} {
9023        error_popup [mc "Error diffing commits: %s" $err]
9024        return
9025    }
9026    set diffids [list commits $a $b]
9027    set blobdifffd($diffids) $fd
9028    set diffinhdr 0
9029    set currdiffsubmod ""
9030    filerun $fd [list getblobdiffline $fd $diffids]
9031}
9032
9033proc diffvssel {dirn} {
9034    global rowmenuid selectedline
9035
9036    if {$selectedline eq {}} return
9037    if {$dirn} {
9038        set oldid [commitonrow $selectedline]
9039        set newid $rowmenuid
9040    } else {
9041        set oldid $rowmenuid
9042        set newid [commitonrow $selectedline]
9043    }
9044    addtohistory [list doseldiff $oldid $newid] savectextpos
9045    doseldiff $oldid $newid
9046}
9047
9048proc diffvsmark {dirn} {
9049    global rowmenuid markedid
9050
9051    if {![info exists markedid]} return
9052    if {$dirn} {
9053        set oldid $markedid
9054        set newid $rowmenuid
9055    } else {
9056        set oldid $rowmenuid
9057        set newid $markedid
9058    }
9059    addtohistory [list doseldiff $oldid $newid] savectextpos
9060    doseldiff $oldid $newid
9061}
9062
9063proc doseldiff {oldid newid} {
9064    global ctext
9065    global commitinfo
9066
9067    $ctext conf -state normal
9068    clear_ctext
9069    init_flist [mc "Top"]
9070    $ctext insert end "[mc "From"] "
9071    $ctext insert end $oldid link0
9072    setlink $oldid link0
9073    $ctext insert end "\n     "
9074    $ctext insert end [lindex $commitinfo($oldid) 0]
9075    $ctext insert end "\n\n[mc "To"]   "
9076    $ctext insert end $newid link1
9077    setlink $newid link1
9078    $ctext insert end "\n     "
9079    $ctext insert end [lindex $commitinfo($newid) 0]
9080    $ctext insert end "\n"
9081    $ctext conf -state disabled
9082    $ctext tag remove found 1.0 end
9083    startdiff [list $oldid $newid]
9084}
9085
9086proc mkpatch {} {
9087    global rowmenuid currentid commitinfo patchtop patchnum NS
9088
9089    if {![info exists currentid]} return
9090    set oldid $currentid
9091    set oldhead [lindex $commitinfo($oldid) 0]
9092    set newid $rowmenuid
9093    set newhead [lindex $commitinfo($newid) 0]
9094    set top .patch
9095    set patchtop $top
9096    catch {destroy $top}
9097    ttk_toplevel $top
9098    make_transient $top .
9099    ${NS}::label $top.title -text [mc "Generate patch"]
9100    grid $top.title - -pady 10
9101    ${NS}::label $top.from -text [mc "From:"]
9102    ${NS}::entry $top.fromsha1 -width 40
9103    $top.fromsha1 insert 0 $oldid
9104    $top.fromsha1 conf -state readonly
9105    grid $top.from $top.fromsha1 -sticky w
9106    ${NS}::entry $top.fromhead -width 60
9107    $top.fromhead insert 0 $oldhead
9108    $top.fromhead conf -state readonly
9109    grid x $top.fromhead -sticky w
9110    ${NS}::label $top.to -text [mc "To:"]
9111    ${NS}::entry $top.tosha1 -width 40
9112    $top.tosha1 insert 0 $newid
9113    $top.tosha1 conf -state readonly
9114    grid $top.to $top.tosha1 -sticky w
9115    ${NS}::entry $top.tohead -width 60
9116    $top.tohead insert 0 $newhead
9117    $top.tohead conf -state readonly
9118    grid x $top.tohead -sticky w
9119    ${NS}::button $top.rev -text [mc "Reverse"] -command mkpatchrev
9120    grid $top.rev x -pady 10 -padx 5
9121    ${NS}::label $top.flab -text [mc "Output file:"]
9122    ${NS}::entry $top.fname -width 60
9123    $top.fname insert 0 [file normalize "patch$patchnum.patch"]
9124    incr patchnum
9125    grid $top.flab $top.fname -sticky w
9126    ${NS}::frame $top.buts
9127    ${NS}::button $top.buts.gen -text [mc "Generate"] -command mkpatchgo
9128    ${NS}::button $top.buts.can -text [mc "Cancel"] -command mkpatchcan
9129    bind $top <Key-Return> mkpatchgo
9130    bind $top <Key-Escape> mkpatchcan
9131    grid $top.buts.gen $top.buts.can
9132    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9133    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9134    grid $top.buts - -pady 10 -sticky ew
9135    focus $top.fname
9136}
9137
9138proc mkpatchrev {} {
9139    global patchtop
9140
9141    set oldid [$patchtop.fromsha1 get]
9142    set oldhead [$patchtop.fromhead get]
9143    set newid [$patchtop.tosha1 get]
9144    set newhead [$patchtop.tohead get]
9145    foreach e [list fromsha1 fromhead tosha1 tohead] \
9146            v [list $newid $newhead $oldid $oldhead] {
9147        $patchtop.$e conf -state normal
9148        $patchtop.$e delete 0 end
9149        $patchtop.$e insert 0 $v
9150        $patchtop.$e conf -state readonly
9151    }
9152}
9153
9154proc mkpatchgo {} {
9155    global patchtop nullid nullid2
9156
9157    set oldid [$patchtop.fromsha1 get]
9158    set newid [$patchtop.tosha1 get]
9159    set fname [$patchtop.fname get]
9160    set cmd [diffcmd [list $oldid $newid] -p]
9161    # trim off the initial "|"
9162    set cmd [lrange $cmd 1 end]
9163    lappend cmd >$fname &
9164    if {[catch {eval exec $cmd} err]} {
9165        error_popup "[mc "Error creating patch:"] $err" $patchtop
9166    }
9167    catch {destroy $patchtop}
9168    unset patchtop
9169}
9170
9171proc mkpatchcan {} {
9172    global patchtop
9173
9174    catch {destroy $patchtop}
9175    unset patchtop
9176}
9177
9178proc mktag {} {
9179    global rowmenuid mktagtop commitinfo NS
9180
9181    set top .maketag
9182    set mktagtop $top
9183    catch {destroy $top}
9184    ttk_toplevel $top
9185    make_transient $top .
9186    ${NS}::label $top.title -text [mc "Create tag"]
9187    grid $top.title - -pady 10
9188    ${NS}::label $top.id -text [mc "ID:"]
9189    ${NS}::entry $top.sha1 -width 40
9190    $top.sha1 insert 0 $rowmenuid
9191    $top.sha1 conf -state readonly
9192    grid $top.id $top.sha1 -sticky w
9193    ${NS}::entry $top.head -width 60
9194    $top.head insert 0 [lindex $commitinfo($rowmenuid) 0]
9195    $top.head conf -state readonly
9196    grid x $top.head -sticky w
9197    ${NS}::label $top.tlab -text [mc "Tag name:"]
9198    ${NS}::entry $top.tag -width 60
9199    grid $top.tlab $top.tag -sticky w
9200    ${NS}::label $top.op -text [mc "Tag message is optional"]
9201    grid $top.op -columnspan 2 -sticky we
9202    ${NS}::label $top.mlab -text [mc "Tag message:"]
9203    ${NS}::entry $top.msg -width 60
9204    grid $top.mlab $top.msg -sticky w
9205    ${NS}::frame $top.buts
9206    ${NS}::button $top.buts.gen -text [mc "Create"] -command mktaggo
9207    ${NS}::button $top.buts.can -text [mc "Cancel"] -command mktagcan
9208    bind $top <Key-Return> mktaggo
9209    bind $top <Key-Escape> mktagcan
9210    grid $top.buts.gen $top.buts.can
9211    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9212    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9213    grid $top.buts - -pady 10 -sticky ew
9214    focus $top.tag
9215}
9216
9217proc domktag {} {
9218    global mktagtop env tagids idtags
9219
9220    set id [$mktagtop.sha1 get]
9221    set tag [$mktagtop.tag get]
9222    set msg [$mktagtop.msg get]
9223    if {$tag == {}} {
9224        error_popup [mc "No tag name specified"] $mktagtop
9225        return 0
9226    }
9227    if {[info exists tagids($tag)]} {
9228        error_popup [mc "Tag \"%s\" already exists" $tag] $mktagtop
9229        return 0
9230    }
9231    if {[catch {
9232        if {$msg != {}} {
9233            exec git tag -a -m $msg $tag $id
9234        } else {
9235            exec git tag $tag $id
9236        }
9237    } err]} {
9238        error_popup "[mc "Error creating tag:"] $err" $mktagtop
9239        return 0
9240    }
9241
9242    set tagids($tag) $id
9243    lappend idtags($id) $tag
9244    redrawtags $id
9245    addedtag $id
9246    dispneartags 0
9247    run refill_reflist
9248    return 1
9249}
9250
9251proc redrawtags {id} {
9252    global canv linehtag idpos currentid curview cmitlisted markedid
9253    global canvxmax iddrawn circleitem mainheadid circlecolors
9254    global mainheadcirclecolor
9255
9256    if {![commitinview $id $curview]} return
9257    if {![info exists iddrawn($id)]} return
9258    set row [rowofcommit $id]
9259    if {$id eq $mainheadid} {
9260        set ofill $mainheadcirclecolor
9261    } else {
9262        set ofill [lindex $circlecolors $cmitlisted($curview,$id)]
9263    }
9264    $canv itemconf $circleitem($row) -fill $ofill
9265    $canv delete tag.$id
9266    set xt [eval drawtags $id $idpos($id)]
9267    $canv coords $linehtag($id) $xt [lindex $idpos($id) 2]
9268    set text [$canv itemcget $linehtag($id) -text]
9269    set font [$canv itemcget $linehtag($id) -font]
9270    set xr [expr {$xt + [font measure $font $text]}]
9271    if {$xr > $canvxmax} {
9272        set canvxmax $xr
9273        setcanvscroll
9274    }
9275    if {[info exists currentid] && $currentid == $id} {
9276        make_secsel $id
9277    }
9278    if {[info exists markedid] && $markedid eq $id} {
9279        make_idmark $id
9280    }
9281}
9282
9283proc mktagcan {} {
9284    global mktagtop
9285
9286    catch {destroy $mktagtop}
9287    unset mktagtop
9288}
9289
9290proc mktaggo {} {
9291    if {![domktag]} return
9292    mktagcan
9293}
9294
9295proc writecommit {} {
9296    global rowmenuid wrcomtop commitinfo wrcomcmd NS
9297
9298    set top .writecommit
9299    set wrcomtop $top
9300    catch {destroy $top}
9301    ttk_toplevel $top
9302    make_transient $top .
9303    ${NS}::label $top.title -text [mc "Write commit to file"]
9304    grid $top.title - -pady 10
9305    ${NS}::label $top.id -text [mc "ID:"]
9306    ${NS}::entry $top.sha1 -width 40
9307    $top.sha1 insert 0 $rowmenuid
9308    $top.sha1 conf -state readonly
9309    grid $top.id $top.sha1 -sticky w
9310    ${NS}::entry $top.head -width 60
9311    $top.head insert 0 [lindex $commitinfo($rowmenuid) 0]
9312    $top.head conf -state readonly
9313    grid x $top.head -sticky w
9314    ${NS}::label $top.clab -text [mc "Command:"]
9315    ${NS}::entry $top.cmd -width 60 -textvariable wrcomcmd
9316    grid $top.clab $top.cmd -sticky w -pady 10
9317    ${NS}::label $top.flab -text [mc "Output file:"]
9318    ${NS}::entry $top.fname -width 60
9319    $top.fname insert 0 [file normalize "commit-[string range $rowmenuid 0 6]"]
9320    grid $top.flab $top.fname -sticky w
9321    ${NS}::frame $top.buts
9322    ${NS}::button $top.buts.gen -text [mc "Write"] -command wrcomgo
9323    ${NS}::button $top.buts.can -text [mc "Cancel"] -command wrcomcan
9324    bind $top <Key-Return> wrcomgo
9325    bind $top <Key-Escape> wrcomcan
9326    grid $top.buts.gen $top.buts.can
9327    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9328    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9329    grid $top.buts - -pady 10 -sticky ew
9330    focus $top.fname
9331}
9332
9333proc wrcomgo {} {
9334    global wrcomtop
9335
9336    set id [$wrcomtop.sha1 get]
9337    set cmd "echo $id | [$wrcomtop.cmd get]"
9338    set fname [$wrcomtop.fname get]
9339    if {[catch {exec sh -c $cmd >$fname &} err]} {
9340        error_popup "[mc "Error writing commit:"] $err" $wrcomtop
9341    }
9342    catch {destroy $wrcomtop}
9343    unset wrcomtop
9344}
9345
9346proc wrcomcan {} {
9347    global wrcomtop
9348
9349    catch {destroy $wrcomtop}
9350    unset wrcomtop
9351}
9352
9353proc mkbranch {} {
9354    global rowmenuid mkbrtop NS
9355
9356    set top .makebranch
9357    catch {destroy $top}
9358    ttk_toplevel $top
9359    make_transient $top .
9360    ${NS}::label $top.title -text [mc "Create new branch"]
9361    grid $top.title - -pady 10
9362    ${NS}::label $top.id -text [mc "ID:"]
9363    ${NS}::entry $top.sha1 -width 40
9364    $top.sha1 insert 0 $rowmenuid
9365    $top.sha1 conf -state readonly
9366    grid $top.id $top.sha1 -sticky w
9367    ${NS}::label $top.nlab -text [mc "Name:"]
9368    ${NS}::entry $top.name -width 40
9369    grid $top.nlab $top.name -sticky w
9370    ${NS}::frame $top.buts
9371    ${NS}::button $top.buts.go -text [mc "Create"] -command [list mkbrgo $top]
9372    ${NS}::button $top.buts.can -text [mc "Cancel"] -command "catch {destroy $top}"
9373    bind $top <Key-Return> [list mkbrgo $top]
9374    bind $top <Key-Escape> "catch {destroy $top}"
9375    grid $top.buts.go $top.buts.can
9376    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9377    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9378    grid $top.buts - -pady 10 -sticky ew
9379    focus $top.name
9380}
9381
9382proc mkbrgo {top} {
9383    global headids idheads
9384
9385    set name [$top.name get]
9386    set id [$top.sha1 get]
9387    set cmdargs {}
9388    set old_id {}
9389    if {$name eq {}} {
9390        error_popup [mc "Please specify a name for the new branch"] $top
9391        return
9392    }
9393    if {[info exists headids($name)]} {
9394        if {![confirm_popup [mc \
9395                "Branch '%s' already exists. Overwrite?" $name] $top]} {
9396            return
9397        }
9398        set old_id $headids($name)
9399        lappend cmdargs -f
9400    }
9401    catch {destroy $top}
9402    lappend cmdargs $name $id
9403    nowbusy newbranch
9404    update
9405    if {[catch {
9406        eval exec git branch $cmdargs
9407    } err]} {
9408        notbusy newbranch
9409        error_popup $err
9410    } else {
9411        notbusy newbranch
9412        if {$old_id ne {}} {
9413            movehead $id $name
9414            movedhead $id $name
9415            redrawtags $old_id
9416            redrawtags $id
9417        } else {
9418            set headids($name) $id
9419            lappend idheads($id) $name
9420            addedhead $id $name
9421            redrawtags $id
9422        }
9423        dispneartags 0
9424        run refill_reflist
9425    }
9426}
9427
9428proc exec_citool {tool_args {baseid {}}} {
9429    global commitinfo env
9430
9431    set save_env [array get env GIT_AUTHOR_*]
9432
9433    if {$baseid ne {}} {
9434        if {![info exists commitinfo($baseid)]} {
9435            getcommit $baseid
9436        }
9437        set author [lindex $commitinfo($baseid) 1]
9438        set date [lindex $commitinfo($baseid) 2]
9439        if {[regexp {^\s*(\S.*\S|\S)\s*<(.*)>\s*$} \
9440                    $author author name email]
9441            && $date ne {}} {
9442            set env(GIT_AUTHOR_NAME) $name
9443            set env(GIT_AUTHOR_EMAIL) $email
9444            set env(GIT_AUTHOR_DATE) $date
9445        }
9446    }
9447
9448    eval exec git citool $tool_args &
9449
9450    array unset env GIT_AUTHOR_*
9451    array set env $save_env
9452}
9453
9454proc cherrypick {} {
9455    global rowmenuid curview
9456    global mainhead mainheadid
9457    global gitdir
9458
9459    set oldhead [exec git rev-parse HEAD]
9460    set dheads [descheads $rowmenuid]
9461    if {$dheads ne {} && [lsearch -exact $dheads $oldhead] >= 0} {
9462        set ok [confirm_popup [mc "Commit %s is already\
9463                included in branch %s -- really re-apply it?" \
9464                                   [string range $rowmenuid 0 7] $mainhead]]
9465        if {!$ok} return
9466    }
9467    nowbusy cherrypick [mc "Cherry-picking"]
9468    update
9469    # Unfortunately git-cherry-pick writes stuff to stderr even when
9470    # no error occurs, and exec takes that as an indication of error...
9471    if {[catch {exec sh -c "git cherry-pick -r $rowmenuid 2>&1"} err]} {
9472        notbusy cherrypick
9473        if {[regexp -line \
9474                 {Entry '(.*)' (would be overwritten by merge|not uptodate)} \
9475                 $err msg fname]} {
9476            error_popup [mc "Cherry-pick failed because of local changes\
9477                        to file '%s'.\nPlease commit, reset or stash\
9478                        your changes and try again." $fname]
9479        } elseif {[regexp -line \
9480                       {^(CONFLICT \(.*\):|Automatic cherry-pick failed|error: could not apply)} \
9481                       $err]} {
9482            if {[confirm_popup [mc "Cherry-pick failed because of merge\
9483                        conflict.\nDo you wish to run git citool to\
9484                        resolve it?"]]} {
9485                # Force citool to read MERGE_MSG
9486                file delete [file join $gitdir "GITGUI_MSG"]
9487                exec_citool {} $rowmenuid
9488            }
9489        } else {
9490            error_popup $err
9491        }
9492        run updatecommits
9493        return
9494    }
9495    set newhead [exec git rev-parse HEAD]
9496    if {$newhead eq $oldhead} {
9497        notbusy cherrypick
9498        error_popup [mc "No changes committed"]
9499        return
9500    }
9501    addnewchild $newhead $oldhead
9502    if {[commitinview $oldhead $curview]} {
9503        # XXX this isn't right if we have a path limit...
9504        insertrow $newhead $oldhead $curview
9505        if {$mainhead ne {}} {
9506            movehead $newhead $mainhead
9507            movedhead $newhead $mainhead
9508        }
9509        set mainheadid $newhead
9510        redrawtags $oldhead
9511        redrawtags $newhead
9512        selbyid $newhead
9513    }
9514    notbusy cherrypick
9515}
9516
9517proc revert {} {
9518    global rowmenuid curview
9519    global mainhead mainheadid
9520    global gitdir
9521
9522    set oldhead [exec git rev-parse HEAD]
9523    set dheads [descheads $rowmenuid]
9524    if { $dheads eq {} || [lsearch -exact $dheads $oldhead] == -1 } {
9525       set ok [confirm_popup [mc "Commit %s is not\
9526           included in branch %s -- really revert it?" \
9527                      [string range $rowmenuid 0 7] $mainhead]]
9528       if {!$ok} return
9529    }
9530    nowbusy revert [mc "Reverting"]
9531    update
9532
9533    if [catch {exec git revert --no-edit $rowmenuid} err] {
9534        notbusy revert
9535        if [regexp {files would be overwritten by merge:(\n(( |\t)+[^\n]+\n)+)}\
9536                $err match files] {
9537            regsub {\n( |\t)+} $files "\n" files
9538            error_popup [mc "Revert failed because of local changes to\
9539                the following files:%s Please commit, reset or stash \
9540                your changes and try again." $files]
9541        } elseif [regexp {error: could not revert} $err] {
9542            if [confirm_popup [mc "Revert failed because of merge conflict.\n\
9543                Do you wish to run git citool to resolve it?"]] {
9544                # Force citool to read MERGE_MSG
9545                file delete [file join $gitdir "GITGUI_MSG"]
9546                exec_citool {} $rowmenuid
9547            }
9548        } else { error_popup $err }
9549        run updatecommits
9550        return
9551    }
9552
9553    set newhead [exec git rev-parse HEAD]
9554    if { $newhead eq $oldhead } {
9555        notbusy revert
9556        error_popup [mc "No changes committed"]
9557        return
9558    }
9559
9560    addnewchild $newhead $oldhead
9561
9562    if [commitinview $oldhead $curview] {
9563        # XXX this isn't right if we have a path limit...
9564        insertrow $newhead $oldhead $curview
9565        if {$mainhead ne {}} {
9566            movehead $newhead $mainhead
9567            movedhead $newhead $mainhead
9568        }
9569        set mainheadid $newhead
9570        redrawtags $oldhead
9571        redrawtags $newhead
9572        selbyid $newhead
9573    }
9574
9575    notbusy revert
9576}
9577
9578proc resethead {} {
9579    global mainhead rowmenuid confirm_ok resettype NS
9580
9581    set confirm_ok 0
9582    set w ".confirmreset"
9583    ttk_toplevel $w
9584    make_transient $w .
9585    wm title $w [mc "Confirm reset"]
9586    ${NS}::label $w.m -text \
9587        [mc "Reset branch %s to %s?" $mainhead [string range $rowmenuid 0 7]]
9588    pack $w.m -side top -fill x -padx 20 -pady 20
9589    ${NS}::labelframe $w.f -text [mc "Reset type:"]
9590    set resettype mixed
9591    ${NS}::radiobutton $w.f.soft -value soft -variable resettype \
9592        -text [mc "Soft: Leave working tree and index untouched"]
9593    grid $w.f.soft -sticky w
9594    ${NS}::radiobutton $w.f.mixed -value mixed -variable resettype \
9595        -text [mc "Mixed: Leave working tree untouched, reset index"]
9596    grid $w.f.mixed -sticky w
9597    ${NS}::radiobutton $w.f.hard -value hard -variable resettype \
9598        -text [mc "Hard: Reset working tree and index\n(discard ALL local changes)"]
9599    grid $w.f.hard -sticky w
9600    pack $w.f -side top -fill x -padx 4
9601    ${NS}::button $w.ok -text [mc OK] -command "set confirm_ok 1; destroy $w"
9602    pack $w.ok -side left -fill x -padx 20 -pady 20
9603    ${NS}::button $w.cancel -text [mc Cancel] -command "destroy $w"
9604    bind $w <Key-Escape> [list destroy $w]
9605    pack $w.cancel -side right -fill x -padx 20 -pady 20
9606    bind $w <Visibility> "grab $w; focus $w"
9607    tkwait window $w
9608    if {!$confirm_ok} return
9609    if {[catch {set fd [open \
9610            [list | git reset --$resettype $rowmenuid 2>@1] r]} err]} {
9611        error_popup $err
9612    } else {
9613        dohidelocalchanges
9614        filerun $fd [list readresetstat $fd]
9615        nowbusy reset [mc "Resetting"]
9616        selbyid $rowmenuid
9617    }
9618}
9619
9620proc readresetstat {fd} {
9621    global mainhead mainheadid showlocalchanges rprogcoord
9622
9623    if {[gets $fd line] >= 0} {
9624        if {[regexp {([0-9]+)% \(([0-9]+)/([0-9]+)\)} $line match p m n]} {
9625            set rprogcoord [expr {1.0 * $m / $n}]
9626            adjustprogress
9627        }
9628        return 1
9629    }
9630    set rprogcoord 0
9631    adjustprogress
9632    notbusy reset
9633    if {[catch {close $fd} err]} {
9634        error_popup $err
9635    }
9636    set oldhead $mainheadid
9637    set newhead [exec git rev-parse HEAD]
9638    if {$newhead ne $oldhead} {
9639        movehead $newhead $mainhead
9640        movedhead $newhead $mainhead
9641        set mainheadid $newhead
9642        redrawtags $oldhead
9643        redrawtags $newhead
9644    }
9645    if {$showlocalchanges} {
9646        doshowlocalchanges
9647    }
9648    return 0
9649}
9650
9651# context menu for a head
9652proc headmenu {x y id head} {
9653    global headmenuid headmenuhead headctxmenu mainhead
9654
9655    stopfinding
9656    set headmenuid $id
9657    set headmenuhead $head
9658    set state normal
9659    if {[string match "remotes/*" $head]} {
9660        set state disabled
9661    }
9662    if {$head eq $mainhead} {
9663        set state disabled
9664    }
9665    $headctxmenu entryconfigure 0 -state $state
9666    $headctxmenu entryconfigure 1 -state $state
9667    tk_popup $headctxmenu $x $y
9668}
9669
9670proc cobranch {} {
9671    global headmenuid headmenuhead headids
9672    global showlocalchanges
9673
9674    # check the tree is clean first??
9675    nowbusy checkout [mc "Checking out"]
9676    update
9677    dohidelocalchanges
9678    if {[catch {
9679        set fd [open [list | git checkout $headmenuhead 2>@1] r]
9680    } err]} {
9681        notbusy checkout
9682        error_popup $err
9683        if {$showlocalchanges} {
9684            dodiffindex
9685        }
9686    } else {
9687        filerun $fd [list readcheckoutstat $fd $headmenuhead $headmenuid]
9688    }
9689}
9690
9691proc readcheckoutstat {fd newhead newheadid} {
9692    global mainhead mainheadid headids showlocalchanges progresscoords
9693    global viewmainheadid curview
9694
9695    if {[gets $fd line] >= 0} {
9696        if {[regexp {([0-9]+)% \(([0-9]+)/([0-9]+)\)} $line match p m n]} {
9697            set progresscoords [list 0 [expr {1.0 * $m / $n}]]
9698            adjustprogress
9699        }
9700        return 1
9701    }
9702    set progresscoords {0 0}
9703    adjustprogress
9704    notbusy checkout
9705    if {[catch {close $fd} err]} {
9706        error_popup $err
9707    }
9708    set oldmainid $mainheadid
9709    set mainhead $newhead
9710    set mainheadid $newheadid
9711    set viewmainheadid($curview) $newheadid
9712    redrawtags $oldmainid
9713    redrawtags $newheadid
9714    selbyid $newheadid
9715    if {$showlocalchanges} {
9716        dodiffindex
9717    }
9718}
9719
9720proc rmbranch {} {
9721    global headmenuid headmenuhead mainhead
9722    global idheads
9723
9724    set head $headmenuhead
9725    set id $headmenuid
9726    # this check shouldn't be needed any more...
9727    if {$head eq $mainhead} {
9728        error_popup [mc "Cannot delete the currently checked-out branch"]
9729        return
9730    }
9731    set dheads [descheads $id]
9732    if {[llength $dheads] == 1 && $idheads($dheads) eq $head} {
9733        # the stuff on this branch isn't on any other branch
9734        if {![confirm_popup [mc "The commits on branch %s aren't on any other\
9735                        branch.\nReally delete branch %s?" $head $head]]} return
9736    }
9737    nowbusy rmbranch
9738    update
9739    if {[catch {exec git branch -D $head} err]} {
9740        notbusy rmbranch
9741        error_popup $err
9742        return
9743    }
9744    removehead $id $head
9745    removedhead $id $head
9746    redrawtags $id
9747    notbusy rmbranch
9748    dispneartags 0
9749    run refill_reflist
9750}
9751
9752# Display a list of tags and heads
9753proc showrefs {} {
9754    global showrefstop bgcolor fgcolor selectbgcolor NS
9755    global bglist fglist reflistfilter reflist maincursor
9756
9757    set top .showrefs
9758    set showrefstop $top
9759    if {[winfo exists $top]} {
9760        raise $top
9761        refill_reflist
9762        return
9763    }
9764    ttk_toplevel $top
9765    wm title $top [mc "Tags and heads: %s" [file tail [pwd]]]
9766    make_transient $top .
9767    text $top.list -background $bgcolor -foreground $fgcolor \
9768        -selectbackground $selectbgcolor -font mainfont \
9769        -xscrollcommand "$top.xsb set" -yscrollcommand "$top.ysb set" \
9770        -width 30 -height 20 -cursor $maincursor \
9771        -spacing1 1 -spacing3 1 -state disabled
9772    $top.list tag configure highlight -background $selectbgcolor
9773    lappend bglist $top.list
9774    lappend fglist $top.list
9775    ${NS}::scrollbar $top.ysb -command "$top.list yview" -orient vertical
9776    ${NS}::scrollbar $top.xsb -command "$top.list xview" -orient horizontal
9777    grid $top.list $top.ysb -sticky nsew
9778    grid $top.xsb x -sticky ew
9779    ${NS}::frame $top.f
9780    ${NS}::label $top.f.l -text "[mc "Filter"]: "
9781    ${NS}::entry $top.f.e -width 20 -textvariable reflistfilter
9782    set reflistfilter "*"
9783    trace add variable reflistfilter write reflistfilter_change
9784    pack $top.f.e -side right -fill x -expand 1
9785    pack $top.f.l -side left
9786    grid $top.f - -sticky ew -pady 2
9787    ${NS}::button $top.close -command [list destroy $top] -text [mc "Close"]
9788    bind $top <Key-Escape> [list destroy $top]
9789    grid $top.close -
9790    grid columnconfigure $top 0 -weight 1
9791    grid rowconfigure $top 0 -weight 1
9792    bind $top.list <1> {break}
9793    bind $top.list <B1-Motion> {break}
9794    bind $top.list <ButtonRelease-1> {sel_reflist %W %x %y; break}
9795    set reflist {}
9796    refill_reflist
9797}
9798
9799proc sel_reflist {w x y} {
9800    global showrefstop reflist headids tagids otherrefids
9801
9802    if {![winfo exists $showrefstop]} return
9803    set l [lindex [split [$w index "@$x,$y"] "."] 0]
9804    set ref [lindex $reflist [expr {$l-1}]]
9805    set n [lindex $ref 0]
9806    switch -- [lindex $ref 1] {
9807        "H" {selbyid $headids($n)}
9808        "T" {selbyid $tagids($n)}
9809        "o" {selbyid $otherrefids($n)}
9810    }
9811    $showrefstop.list tag add highlight $l.0 "$l.0 lineend"
9812}
9813
9814proc unsel_reflist {} {
9815    global showrefstop
9816
9817    if {![info exists showrefstop] || ![winfo exists $showrefstop]} return
9818    $showrefstop.list tag remove highlight 0.0 end
9819}
9820
9821proc reflistfilter_change {n1 n2 op} {
9822    global reflistfilter
9823
9824    after cancel refill_reflist
9825    after 200 refill_reflist
9826}
9827
9828proc refill_reflist {} {
9829    global reflist reflistfilter showrefstop headids tagids otherrefids
9830    global curview
9831
9832    if {![info exists showrefstop] || ![winfo exists $showrefstop]} return
9833    set refs {}
9834    foreach n [array names headids] {
9835        if {[string match $reflistfilter $n]} {
9836            if {[commitinview $headids($n) $curview]} {
9837                lappend refs [list $n H]
9838            } else {
9839                interestedin $headids($n) {run refill_reflist}
9840            }
9841        }
9842    }
9843    foreach n [array names tagids] {
9844        if {[string match $reflistfilter $n]} {
9845            if {[commitinview $tagids($n) $curview]} {
9846                lappend refs [list $n T]
9847            } else {
9848                interestedin $tagids($n) {run refill_reflist}
9849            }
9850        }
9851    }
9852    foreach n [array names otherrefids] {
9853        if {[string match $reflistfilter $n]} {
9854            if {[commitinview $otherrefids($n) $curview]} {
9855                lappend refs [list $n o]
9856            } else {
9857                interestedin $otherrefids($n) {run refill_reflist}
9858            }
9859        }
9860    }
9861    set refs [lsort -index 0 $refs]
9862    if {$refs eq $reflist} return
9863
9864    # Update the contents of $showrefstop.list according to the
9865    # differences between $reflist (old) and $refs (new)
9866    $showrefstop.list conf -state normal
9867    $showrefstop.list insert end "\n"
9868    set i 0
9869    set j 0
9870    while {$i < [llength $reflist] || $j < [llength $refs]} {
9871        if {$i < [llength $reflist]} {
9872            if {$j < [llength $refs]} {
9873                set cmp [string compare [lindex $reflist $i 0] \
9874                             [lindex $refs $j 0]]
9875                if {$cmp == 0} {
9876                    set cmp [string compare [lindex $reflist $i 1] \
9877                                 [lindex $refs $j 1]]
9878                }
9879            } else {
9880                set cmp -1
9881            }
9882        } else {
9883            set cmp 1
9884        }
9885        switch -- $cmp {
9886            -1 {
9887                $showrefstop.list delete "[expr {$j+1}].0" "[expr {$j+2}].0"
9888                incr i
9889            }
9890            0 {
9891                incr i
9892                incr j
9893            }
9894            1 {
9895                set l [expr {$j + 1}]
9896                $showrefstop.list image create $l.0 -align baseline \
9897                    -image reficon-[lindex $refs $j 1] -padx 2
9898                $showrefstop.list insert $l.1 "[lindex $refs $j 0]\n"
9899                incr j
9900            }
9901        }
9902    }
9903    set reflist $refs
9904    # delete last newline
9905    $showrefstop.list delete end-2c end-1c
9906    $showrefstop.list conf -state disabled
9907}
9908
9909# Stuff for finding nearby tags
9910proc getallcommits {} {
9911    global allcommits nextarc seeds allccache allcwait cachedarcs allcupdate
9912    global idheads idtags idotherrefs allparents tagobjid
9913    global gitdir
9914
9915    if {![info exists allcommits]} {
9916        set nextarc 0
9917        set allcommits 0
9918        set seeds {}
9919        set allcwait 0
9920        set cachedarcs 0
9921        set allccache [file join $gitdir "gitk.cache"]
9922        if {![catch {
9923            set f [open $allccache r]
9924            set allcwait 1
9925            getcache $f
9926        }]} return
9927    }
9928
9929    if {$allcwait} {
9930        return
9931    }
9932    set cmd [list | git rev-list --parents]
9933    set allcupdate [expr {$seeds ne {}}]
9934    if {!$allcupdate} {
9935        set ids "--all"
9936    } else {
9937        set refs [concat [array names idheads] [array names idtags] \
9938                      [array names idotherrefs]]
9939        set ids {}
9940        set tagobjs {}
9941        foreach name [array names tagobjid] {
9942            lappend tagobjs $tagobjid($name)
9943        }
9944        foreach id [lsort -unique $refs] {
9945            if {![info exists allparents($id)] &&
9946                [lsearch -exact $tagobjs $id] < 0} {
9947                lappend ids $id
9948            }
9949        }
9950        if {$ids ne {}} {
9951            foreach id $seeds {
9952                lappend ids "^$id"
9953            }
9954        }
9955    }
9956    if {$ids ne {}} {
9957        set fd [open [concat $cmd $ids] r]
9958        fconfigure $fd -blocking 0
9959        incr allcommits
9960        nowbusy allcommits
9961        filerun $fd [list getallclines $fd]
9962    } else {
9963        dispneartags 0
9964    }
9965}
9966
9967# Since most commits have 1 parent and 1 child, we group strings of
9968# such commits into "arcs" joining branch/merge points (BMPs), which
9969# are commits that either don't have 1 parent or don't have 1 child.
9970#
9971# arcnos(id) - incoming arcs for BMP, arc we're on for other nodes
9972# arcout(id) - outgoing arcs for BMP
9973# arcids(a) - list of IDs on arc including end but not start
9974# arcstart(a) - BMP ID at start of arc
9975# arcend(a) - BMP ID at end of arc
9976# growing(a) - arc a is still growing
9977# arctags(a) - IDs out of arcids (excluding end) that have tags
9978# archeads(a) - IDs out of arcids (excluding end) that have heads
9979# The start of an arc is at the descendent end, so "incoming" means
9980# coming from descendents, and "outgoing" means going towards ancestors.
9981
9982proc getallclines {fd} {
9983    global allparents allchildren idtags idheads nextarc
9984    global arcnos arcids arctags arcout arcend arcstart archeads growing
9985    global seeds allcommits cachedarcs allcupdate
9986
9987    set nid 0
9988    while {[incr nid] <= 1000 && [gets $fd line] >= 0} {
9989        set id [lindex $line 0]
9990        if {[info exists allparents($id)]} {
9991            # seen it already
9992            continue
9993        }
9994        set cachedarcs 0
9995        set olds [lrange $line 1 end]
9996        set allparents($id) $olds
9997        if {![info exists allchildren($id)]} {
9998            set allchildren($id) {}
9999            set arcnos($id) {}
10000            lappend seeds $id
10001        } else {
10002            set a $arcnos($id)
10003            if {[llength $olds] == 1 && [llength $a] == 1} {
10004                lappend arcids($a) $id
10005                if {[info exists idtags($id)]} {
10006                    lappend arctags($a) $id
10007                }
10008                if {[info exists idheads($id)]} {
10009                    lappend archeads($a) $id
10010                }
10011                if {[info exists allparents($olds)]} {
10012                    # seen parent already
10013                    if {![info exists arcout($olds)]} {
10014                        splitarc $olds
10015                    }
10016                    lappend arcids($a) $olds
10017                    set arcend($a) $olds
10018                    unset growing($a)
10019                }
10020                lappend allchildren($olds) $id
10021                lappend arcnos($olds) $a
10022                continue
10023            }
10024        }
10025        foreach a $arcnos($id) {
10026            lappend arcids($a) $id
10027            set arcend($a) $id
10028            unset growing($a)
10029        }
10030
10031        set ao {}
10032        foreach p $olds {
10033            lappend allchildren($p) $id
10034            set a [incr nextarc]
10035            set arcstart($a) $id
10036            set archeads($a) {}
10037            set arctags($a) {}
10038            set archeads($a) {}
10039            set arcids($a) {}
10040            lappend ao $a
10041            set growing($a) 1
10042            if {[info exists allparents($p)]} {
10043                # seen it already, may need to make a new branch
10044                if {![info exists arcout($p)]} {
10045                    splitarc $p
10046                }
10047                lappend arcids($a) $p
10048                set arcend($a) $p
10049                unset growing($a)
10050            }
10051            lappend arcnos($p) $a
10052        }
10053        set arcout($id) $ao
10054    }
10055    if {$nid > 0} {
10056        global cached_dheads cached_dtags cached_atags
10057        catch {unset cached_dheads}
10058        catch {unset cached_dtags}
10059        catch {unset cached_atags}
10060    }
10061    if {![eof $fd]} {
10062        return [expr {$nid >= 1000? 2: 1}]
10063    }
10064    set cacheok 1
10065    if {[catch {
10066        fconfigure $fd -blocking 1
10067        close $fd
10068    } err]} {
10069        # got an error reading the list of commits
10070        # if we were updating, try rereading the whole thing again
10071        if {$allcupdate} {
10072            incr allcommits -1
10073            dropcache $err
10074            return
10075        }
10076        error_popup "[mc "Error reading commit topology information;\
10077                branch and preceding/following tag information\
10078                will be incomplete."]\n($err)"
10079        set cacheok 0
10080    }
10081    if {[incr allcommits -1] == 0} {
10082        notbusy allcommits
10083        if {$cacheok} {
10084            run savecache
10085        }
10086    }
10087    dispneartags 0
10088    return 0
10089}
10090
10091proc recalcarc {a} {
10092    global arctags archeads arcids idtags idheads
10093
10094    set at {}
10095    set ah {}
10096    foreach id [lrange $arcids($a) 0 end-1] {
10097        if {[info exists idtags($id)]} {
10098            lappend at $id
10099        }
10100        if {[info exists idheads($id)]} {
10101            lappend ah $id
10102        }
10103    }
10104    set arctags($a) $at
10105    set archeads($a) $ah
10106}
10107
10108proc splitarc {p} {
10109    global arcnos arcids nextarc arctags archeads idtags idheads
10110    global arcstart arcend arcout allparents growing
10111
10112    set a $arcnos($p)
10113    if {[llength $a] != 1} {
10114        puts "oops splitarc called but [llength $a] arcs already"
10115        return
10116    }
10117    set a [lindex $a 0]
10118    set i [lsearch -exact $arcids($a) $p]
10119    if {$i < 0} {
10120        puts "oops splitarc $p not in arc $a"
10121        return
10122    }
10123    set na [incr nextarc]
10124    if {[info exists arcend($a)]} {
10125        set arcend($na) $arcend($a)
10126    } else {
10127        set l [lindex $allparents([lindex $arcids($a) end]) 0]
10128        set j [lsearch -exact $arcnos($l) $a]
10129        set arcnos($l) [lreplace $arcnos($l) $j $j $na]
10130    }
10131    set tail [lrange $arcids($a) [expr {$i+1}] end]
10132    set arcids($a) [lrange $arcids($a) 0 $i]
10133    set arcend($a) $p
10134    set arcstart($na) $p
10135    set arcout($p) $na
10136    set arcids($na) $tail
10137    if {[info exists growing($a)]} {
10138        set growing($na) 1
10139        unset growing($a)
10140    }
10141
10142    foreach id $tail {
10143        if {[llength $arcnos($id)] == 1} {
10144            set arcnos($id) $na
10145        } else {
10146            set j [lsearch -exact $arcnos($id) $a]
10147            set arcnos($id) [lreplace $arcnos($id) $j $j $na]
10148        }
10149    }
10150
10151    # reconstruct tags and heads lists
10152    if {$arctags($a) ne {} || $archeads($a) ne {}} {
10153        recalcarc $a
10154        recalcarc $na
10155    } else {
10156        set arctags($na) {}
10157        set archeads($na) {}
10158    }
10159}
10160
10161# Update things for a new commit added that is a child of one
10162# existing commit.  Used when cherry-picking.
10163proc addnewchild {id p} {
10164    global allparents allchildren idtags nextarc
10165    global arcnos arcids arctags arcout arcend arcstart archeads growing
10166    global seeds allcommits
10167
10168    if {![info exists allcommits] || ![info exists arcnos($p)]} return
10169    set allparents($id) [list $p]
10170    set allchildren($id) {}
10171    set arcnos($id) {}
10172    lappend seeds $id
10173    lappend allchildren($p) $id
10174    set a [incr nextarc]
10175    set arcstart($a) $id
10176    set archeads($a) {}
10177    set arctags($a) {}
10178    set arcids($a) [list $p]
10179    set arcend($a) $p
10180    if {![info exists arcout($p)]} {
10181        splitarc $p
10182    }
10183    lappend arcnos($p) $a
10184    set arcout($id) [list $a]
10185}
10186
10187# This implements a cache for the topology information.
10188# The cache saves, for each arc, the start and end of the arc,
10189# the ids on the arc, and the outgoing arcs from the end.
10190proc readcache {f} {
10191    global arcnos arcids arcout arcstart arcend arctags archeads nextarc
10192    global idtags idheads allparents cachedarcs possible_seeds seeds growing
10193    global allcwait
10194
10195    set a $nextarc
10196    set lim $cachedarcs
10197    if {$lim - $a > 500} {
10198        set lim [expr {$a + 500}]
10199    }
10200    if {[catch {
10201        if {$a == $lim} {
10202            # finish reading the cache and setting up arctags, etc.
10203            set line [gets $f]
10204            if {$line ne "1"} {error "bad final version"}
10205            close $f
10206            foreach id [array names idtags] {
10207                if {[info exists arcnos($id)] && [llength $arcnos($id)] == 1 &&
10208                    [llength $allparents($id)] == 1} {
10209                    set a [lindex $arcnos($id) 0]
10210                    if {$arctags($a) eq {}} {
10211                        recalcarc $a
10212                    }
10213                }
10214            }
10215            foreach id [array names idheads] {
10216                if {[info exists arcnos($id)] && [llength $arcnos($id)] == 1 &&
10217                    [llength $allparents($id)] == 1} {
10218                    set a [lindex $arcnos($id) 0]
10219                    if {$archeads($a) eq {}} {
10220                        recalcarc $a
10221                    }
10222                }
10223            }
10224            foreach id [lsort -unique $possible_seeds] {
10225                if {$arcnos($id) eq {}} {
10226                    lappend seeds $id
10227                }
10228            }
10229            set allcwait 0
10230        } else {
10231            while {[incr a] <= $lim} {
10232                set line [gets $f]
10233                if {[llength $line] != 3} {error "bad line"}
10234                set s [lindex $line 0]
10235                set arcstart($a) $s
10236                lappend arcout($s) $a
10237                if {![info exists arcnos($s)]} {
10238                    lappend possible_seeds $s
10239                    set arcnos($s) {}
10240                }
10241                set e [lindex $line 1]
10242                if {$e eq {}} {
10243                    set growing($a) 1
10244                } else {
10245                    set arcend($a) $e
10246                    if {![info exists arcout($e)]} {
10247                        set arcout($e) {}
10248                    }
10249                }
10250                set arcids($a) [lindex $line 2]
10251                foreach id $arcids($a) {
10252                    lappend allparents($s) $id
10253                    set s $id
10254                    lappend arcnos($id) $a
10255                }
10256                if {![info exists allparents($s)]} {
10257                    set allparents($s) {}
10258                }
10259                set arctags($a) {}
10260                set archeads($a) {}
10261            }
10262            set nextarc [expr {$a - 1}]
10263        }
10264    } err]} {
10265        dropcache $err
10266        return 0
10267    }
10268    if {!$allcwait} {
10269        getallcommits
10270    }
10271    return $allcwait
10272}
10273
10274proc getcache {f} {
10275    global nextarc cachedarcs possible_seeds
10276
10277    if {[catch {
10278        set line [gets $f]
10279        if {[llength $line] != 2 || [lindex $line 0] ne "1"} {error "bad version"}
10280        # make sure it's an integer
10281        set cachedarcs [expr {int([lindex $line 1])}]
10282        if {$cachedarcs < 0} {error "bad number of arcs"}
10283        set nextarc 0
10284        set possible_seeds {}
10285        run readcache $f
10286    } err]} {
10287        dropcache $err
10288    }
10289    return 0
10290}
10291
10292proc dropcache {err} {
10293    global allcwait nextarc cachedarcs seeds
10294
10295    #puts "dropping cache ($err)"
10296    foreach v {arcnos arcout arcids arcstart arcend growing \
10297                   arctags archeads allparents allchildren} {
10298        global $v
10299        catch {unset $v}
10300    }
10301    set allcwait 0
10302    set nextarc 0
10303    set cachedarcs 0
10304    set seeds {}
10305    getallcommits
10306}
10307
10308proc writecache {f} {
10309    global cachearc cachedarcs allccache
10310    global arcstart arcend arcnos arcids arcout
10311
10312    set a $cachearc
10313    set lim $cachedarcs
10314    if {$lim - $a > 1000} {
10315        set lim [expr {$a + 1000}]
10316    }
10317    if {[catch {
10318        while {[incr a] <= $lim} {
10319            if {[info exists arcend($a)]} {
10320                puts $f [list $arcstart($a) $arcend($a) $arcids($a)]
10321            } else {
10322                puts $f [list $arcstart($a) {} $arcids($a)]
10323            }
10324        }
10325    } err]} {
10326        catch {close $f}
10327        catch {file delete $allccache}
10328        #puts "writing cache failed ($err)"
10329        return 0
10330    }
10331    set cachearc [expr {$a - 1}]
10332    if {$a > $cachedarcs} {
10333        puts $f "1"
10334        close $f
10335        return 0
10336    }
10337    return 1
10338}
10339
10340proc savecache {} {
10341    global nextarc cachedarcs cachearc allccache
10342
10343    if {$nextarc == $cachedarcs} return
10344    set cachearc 0
10345    set cachedarcs $nextarc
10346    catch {
10347        set f [open $allccache w]
10348        puts $f [list 1 $cachedarcs]
10349        run writecache $f
10350    }
10351}
10352
10353# Returns 1 if a is an ancestor of b, -1 if b is an ancestor of a,
10354# or 0 if neither is true.
10355proc anc_or_desc {a b} {
10356    global arcout arcstart arcend arcnos cached_isanc
10357
10358    if {$arcnos($a) eq $arcnos($b)} {
10359        # Both are on the same arc(s); either both are the same BMP,
10360        # or if one is not a BMP, the other is also not a BMP or is
10361        # the BMP at end of the arc (and it only has 1 incoming arc).
10362        # Or both can be BMPs with no incoming arcs.
10363        if {$a eq $b || $arcnos($a) eq {}} {
10364            return 0
10365        }
10366        # assert {[llength $arcnos($a)] == 1}
10367        set arc [lindex $arcnos($a) 0]
10368        set i [lsearch -exact $arcids($arc) $a]
10369        set j [lsearch -exact $arcids($arc) $b]
10370        if {$i < 0 || $i > $j} {
10371            return 1
10372        } else {
10373            return -1
10374        }
10375    }
10376
10377    if {![info exists arcout($a)]} {
10378        set arc [lindex $arcnos($a) 0]
10379        if {[info exists arcend($arc)]} {
10380            set aend $arcend($arc)
10381        } else {
10382            set aend {}
10383        }
10384        set a $arcstart($arc)
10385    } else {
10386        set aend $a
10387    }
10388    if {![info exists arcout($b)]} {
10389        set arc [lindex $arcnos($b) 0]
10390        if {[info exists arcend($arc)]} {
10391            set bend $arcend($arc)
10392        } else {
10393            set bend {}
10394        }
10395        set b $arcstart($arc)
10396    } else {
10397        set bend $b
10398    }
10399    if {$a eq $bend} {
10400        return 1
10401    }
10402    if {$b eq $aend} {
10403        return -1
10404    }
10405    if {[info exists cached_isanc($a,$bend)]} {
10406        if {$cached_isanc($a,$bend)} {
10407            return 1
10408        }
10409    }
10410    if {[info exists cached_isanc($b,$aend)]} {
10411        if {$cached_isanc($b,$aend)} {
10412            return -1
10413        }
10414        if {[info exists cached_isanc($a,$bend)]} {
10415            return 0
10416        }
10417    }
10418
10419    set todo [list $a $b]
10420    set anc($a) a
10421    set anc($b) b
10422    for {set i 0} {$i < [llength $todo]} {incr i} {
10423        set x [lindex $todo $i]
10424        if {$anc($x) eq {}} {
10425            continue
10426        }
10427        foreach arc $arcnos($x) {
10428            set xd $arcstart($arc)
10429            if {$xd eq $bend} {
10430                set cached_isanc($a,$bend) 1
10431                set cached_isanc($b,$aend) 0
10432                return 1
10433            } elseif {$xd eq $aend} {
10434                set cached_isanc($b,$aend) 1
10435                set cached_isanc($a,$bend) 0
10436                return -1
10437            }
10438            if {![info exists anc($xd)]} {
10439                set anc($xd) $anc($x)
10440                lappend todo $xd
10441            } elseif {$anc($xd) ne $anc($x)} {
10442                set anc($xd) {}
10443            }
10444        }
10445    }
10446    set cached_isanc($a,$bend) 0
10447    set cached_isanc($b,$aend) 0
10448    return 0
10449}
10450
10451# This identifies whether $desc has an ancestor that is
10452# a growing tip of the graph and which is not an ancestor of $anc
10453# and returns 0 if so and 1 if not.
10454# If we subsequently discover a tag on such a growing tip, and that
10455# turns out to be a descendent of $anc (which it could, since we
10456# don't necessarily see children before parents), then $desc
10457# isn't a good choice to display as a descendent tag of
10458# $anc (since it is the descendent of another tag which is
10459# a descendent of $anc).  Similarly, $anc isn't a good choice to
10460# display as a ancestor tag of $desc.
10461#
10462proc is_certain {desc anc} {
10463    global arcnos arcout arcstart arcend growing problems
10464
10465    set certain {}
10466    if {[llength $arcnos($anc)] == 1} {
10467        # tags on the same arc are certain
10468        if {$arcnos($desc) eq $arcnos($anc)} {
10469            return 1
10470        }
10471        if {![info exists arcout($anc)]} {
10472            # if $anc is partway along an arc, use the start of the arc instead
10473            set a [lindex $arcnos($anc) 0]
10474            set anc $arcstart($a)
10475        }
10476    }
10477    if {[llength $arcnos($desc)] > 1 || [info exists arcout($desc)]} {
10478        set x $desc
10479    } else {
10480        set a [lindex $arcnos($desc) 0]
10481        set x $arcend($a)
10482    }
10483    if {$x == $anc} {
10484        return 1
10485    }
10486    set anclist [list $x]
10487    set dl($x) 1
10488    set nnh 1
10489    set ngrowanc 0
10490    for {set i 0} {$i < [llength $anclist] && ($nnh > 0 || $ngrowanc > 0)} {incr i} {
10491        set x [lindex $anclist $i]
10492        if {$dl($x)} {
10493            incr nnh -1
10494        }
10495        set done($x) 1
10496        foreach a $arcout($x) {
10497            if {[info exists growing($a)]} {
10498                if {![info exists growanc($x)] && $dl($x)} {
10499                    set growanc($x) 1
10500                    incr ngrowanc
10501                }
10502            } else {
10503                set y $arcend($a)
10504                if {[info exists dl($y)]} {
10505                    if {$dl($y)} {
10506                        if {!$dl($x)} {
10507                            set dl($y) 0
10508                            if {![info exists done($y)]} {
10509                                incr nnh -1
10510                            }
10511                            if {[info exists growanc($x)]} {
10512                                incr ngrowanc -1
10513                            }
10514                            set xl [list $y]
10515                            for {set k 0} {$k < [llength $xl]} {incr k} {
10516                                set z [lindex $xl $k]
10517                                foreach c $arcout($z) {
10518                                    if {[info exists arcend($c)]} {
10519                                        set v $arcend($c)
10520                                        if {[info exists dl($v)] && $dl($v)} {
10521                                            set dl($v) 0
10522                                            if {![info exists done($v)]} {
10523                                                incr nnh -1
10524                                            }
10525                                            if {[info exists growanc($v)]} {
10526                                                incr ngrowanc -1
10527                                            }
10528                                            lappend xl $v
10529                                        }
10530                                    }
10531                                }
10532                            }
10533                        }
10534                    }
10535                } elseif {$y eq $anc || !$dl($x)} {
10536                    set dl($y) 0
10537                    lappend anclist $y
10538                } else {
10539                    set dl($y) 1
10540                    lappend anclist $y
10541                    incr nnh
10542                }
10543            }
10544        }
10545    }
10546    foreach x [array names growanc] {
10547        if {$dl($x)} {
10548            return 0
10549        }
10550        return 0
10551    }
10552    return 1
10553}
10554
10555proc validate_arctags {a} {
10556    global arctags idtags
10557
10558    set i -1
10559    set na $arctags($a)
10560    foreach id $arctags($a) {
10561        incr i
10562        if {![info exists idtags($id)]} {
10563            set na [lreplace $na $i $i]
10564            incr i -1
10565        }
10566    }
10567    set arctags($a) $na
10568}
10569
10570proc validate_archeads {a} {
10571    global archeads idheads
10572
10573    set i -1
10574    set na $archeads($a)
10575    foreach id $archeads($a) {
10576        incr i
10577        if {![info exists idheads($id)]} {
10578            set na [lreplace $na $i $i]
10579            incr i -1
10580        }
10581    }
10582    set archeads($a) $na
10583}
10584
10585# Return the list of IDs that have tags that are descendents of id,
10586# ignoring IDs that are descendents of IDs already reported.
10587proc desctags {id} {
10588    global arcnos arcstart arcids arctags idtags allparents
10589    global growing cached_dtags
10590
10591    if {![info exists allparents($id)]} {
10592        return {}
10593    }
10594    set t1 [clock clicks -milliseconds]
10595    set argid $id
10596    if {[llength $arcnos($id)] == 1 && [llength $allparents($id)] == 1} {
10597        # part-way along an arc; check that arc first
10598        set a [lindex $arcnos($id) 0]
10599        if {$arctags($a) ne {}} {
10600            validate_arctags $a
10601            set i [lsearch -exact $arcids($a) $id]
10602            set tid {}
10603            foreach t $arctags($a) {
10604                set j [lsearch -exact $arcids($a) $t]
10605                if {$j >= $i} break
10606                set tid $t
10607            }
10608            if {$tid ne {}} {
10609                return $tid
10610            }
10611        }
10612        set id $arcstart($a)
10613        if {[info exists idtags($id)]} {
10614            return $id
10615        }
10616    }
10617    if {[info exists cached_dtags($id)]} {
10618        return $cached_dtags($id)
10619    }
10620
10621    set origid $id
10622    set todo [list $id]
10623    set queued($id) 1
10624    set nc 1
10625    for {set i 0} {$i < [llength $todo] && $nc > 0} {incr i} {
10626        set id [lindex $todo $i]
10627        set done($id) 1
10628        set ta [info exists hastaggedancestor($id)]
10629        if {!$ta} {
10630            incr nc -1
10631        }
10632        # ignore tags on starting node
10633        if {!$ta && $i > 0} {
10634            if {[info exists idtags($id)]} {
10635                set tagloc($id) $id
10636                set ta 1
10637            } elseif {[info exists cached_dtags($id)]} {
10638                set tagloc($id) $cached_dtags($id)
10639                set ta 1
10640            }
10641        }
10642        foreach a $arcnos($id) {
10643            set d $arcstart($a)
10644            if {!$ta && $arctags($a) ne {}} {
10645                validate_arctags $a
10646                if {$arctags($a) ne {}} {
10647                    lappend tagloc($id) [lindex $arctags($a) end]
10648                }
10649            }
10650            if {$ta || $arctags($a) ne {}} {
10651                set tomark [list $d]
10652                for {set j 0} {$j < [llength $tomark]} {incr j} {
10653                    set dd [lindex $tomark $j]
10654                    if {![info exists hastaggedancestor($dd)]} {
10655                        if {[info exists done($dd)]} {
10656                            foreach b $arcnos($dd) {
10657                                lappend tomark $arcstart($b)
10658                            }
10659                            if {[info exists tagloc($dd)]} {
10660                                unset tagloc($dd)
10661                            }
10662                        } elseif {[info exists queued($dd)]} {
10663                            incr nc -1
10664                        }
10665                        set hastaggedancestor($dd) 1
10666                    }
10667                }
10668            }
10669            if {![info exists queued($d)]} {
10670                lappend todo $d
10671                set queued($d) 1
10672                if {![info exists hastaggedancestor($d)]} {
10673                    incr nc
10674                }
10675            }
10676        }
10677    }
10678    set tags {}
10679    foreach id [array names tagloc] {
10680        if {![info exists hastaggedancestor($id)]} {
10681            foreach t $tagloc($id) {
10682                if {[lsearch -exact $tags $t] < 0} {
10683                    lappend tags $t
10684                }
10685            }
10686        }
10687    }
10688    set t2 [clock clicks -milliseconds]
10689    set loopix $i
10690
10691    # remove tags that are descendents of other tags
10692    for {set i 0} {$i < [llength $tags]} {incr i} {
10693        set a [lindex $tags $i]
10694        for {set j 0} {$j < $i} {incr j} {
10695            set b [lindex $tags $j]
10696            set r [anc_or_desc $a $b]
10697            if {$r == 1} {
10698                set tags [lreplace $tags $j $j]
10699                incr j -1
10700                incr i -1
10701            } elseif {$r == -1} {
10702                set tags [lreplace $tags $i $i]
10703                incr i -1
10704                break
10705            }
10706        }
10707    }
10708
10709    if {[array names growing] ne {}} {
10710        # graph isn't finished, need to check if any tag could get
10711        # eclipsed by another tag coming later.  Simply ignore any
10712        # tags that could later get eclipsed.
10713        set ctags {}
10714        foreach t $tags {
10715            if {[is_certain $t $origid]} {
10716                lappend ctags $t
10717            }
10718        }
10719        if {$tags eq $ctags} {
10720            set cached_dtags($origid) $tags
10721        } else {
10722            set tags $ctags
10723        }
10724    } else {
10725        set cached_dtags($origid) $tags
10726    }
10727    set t3 [clock clicks -milliseconds]
10728    if {0 && $t3 - $t1 >= 100} {
10729        puts "iterating descendents ($loopix/[llength $todo] nodes) took\
10730            [expr {$t2-$t1}]+[expr {$t3-$t2}]ms, $nc candidates left"
10731    }
10732    return $tags
10733}
10734
10735proc anctags {id} {
10736    global arcnos arcids arcout arcend arctags idtags allparents
10737    global growing cached_atags
10738
10739    if {![info exists allparents($id)]} {
10740        return {}
10741    }
10742    set t1 [clock clicks -milliseconds]
10743    set argid $id
10744    if {[llength $arcnos($id)] == 1 && [llength $allparents($id)] == 1} {
10745        # part-way along an arc; check that arc first
10746        set a [lindex $arcnos($id) 0]
10747        if {$arctags($a) ne {}} {
10748            validate_arctags $a
10749            set i [lsearch -exact $arcids($a) $id]
10750            foreach t $arctags($a) {
10751                set j [lsearch -exact $arcids($a) $t]
10752                if {$j > $i} {
10753                    return $t
10754                }
10755            }
10756        }
10757        if {![info exists arcend($a)]} {
10758            return {}
10759        }
10760        set id $arcend($a)
10761        if {[info exists idtags($id)]} {
10762            return $id
10763        }
10764    }
10765    if {[info exists cached_atags($id)]} {
10766        return $cached_atags($id)
10767    }
10768
10769    set origid $id
10770    set todo [list $id]
10771    set queued($id) 1
10772    set taglist {}
10773    set nc 1
10774    for {set i 0} {$i < [llength $todo] && $nc > 0} {incr i} {
10775        set id [lindex $todo $i]
10776        set done($id) 1
10777        set td [info exists hastaggeddescendent($id)]
10778        if {!$td} {
10779            incr nc -1
10780        }
10781        # ignore tags on starting node
10782        if {!$td && $i > 0} {
10783            if {[info exists idtags($id)]} {
10784                set tagloc($id) $id
10785                set td 1
10786            } elseif {[info exists cached_atags($id)]} {
10787                set tagloc($id) $cached_atags($id)
10788                set td 1
10789            }
10790        }
10791        foreach a $arcout($id) {
10792            if {!$td && $arctags($a) ne {}} {
10793                validate_arctags $a
10794                if {$arctags($a) ne {}} {
10795                    lappend tagloc($id) [lindex $arctags($a) 0]
10796                }
10797            }
10798            if {![info exists arcend($a)]} continue
10799            set d $arcend($a)
10800            if {$td || $arctags($a) ne {}} {
10801                set tomark [list $d]
10802                for {set j 0} {$j < [llength $tomark]} {incr j} {
10803                    set dd [lindex $tomark $j]
10804                    if {![info exists hastaggeddescendent($dd)]} {
10805                        if {[info exists done($dd)]} {
10806                            foreach b $arcout($dd) {
10807                                if {[info exists arcend($b)]} {
10808                                    lappend tomark $arcend($b)
10809                                }
10810                            }
10811                            if {[info exists tagloc($dd)]} {
10812                                unset tagloc($dd)
10813                            }
10814                        } elseif {[info exists queued($dd)]} {
10815                            incr nc -1
10816                        }
10817                        set hastaggeddescendent($dd) 1
10818                    }
10819                }
10820            }
10821            if {![info exists queued($d)]} {
10822                lappend todo $d
10823                set queued($d) 1
10824                if {![info exists hastaggeddescendent($d)]} {
10825                    incr nc
10826                }
10827            }
10828        }
10829    }
10830    set t2 [clock clicks -milliseconds]
10831    set loopix $i
10832    set tags {}
10833    foreach id [array names tagloc] {
10834        if {![info exists hastaggeddescendent($id)]} {
10835            foreach t $tagloc($id) {
10836                if {[lsearch -exact $tags $t] < 0} {
10837                    lappend tags $t
10838                }
10839            }
10840        }
10841    }
10842
10843    # remove tags that are ancestors of other tags
10844    for {set i 0} {$i < [llength $tags]} {incr i} {
10845        set a [lindex $tags $i]
10846        for {set j 0} {$j < $i} {incr j} {
10847            set b [lindex $tags $j]
10848            set r [anc_or_desc $a $b]
10849            if {$r == -1} {
10850                set tags [lreplace $tags $j $j]
10851                incr j -1
10852                incr i -1
10853            } elseif {$r == 1} {
10854                set tags [lreplace $tags $i $i]
10855                incr i -1
10856                break
10857            }
10858        }
10859    }
10860
10861    if {[array names growing] ne {}} {
10862        # graph isn't finished, need to check if any tag could get
10863        # eclipsed by another tag coming later.  Simply ignore any
10864        # tags that could later get eclipsed.
10865        set ctags {}
10866        foreach t $tags {
10867            if {[is_certain $origid $t]} {
10868                lappend ctags $t
10869            }
10870        }
10871        if {$tags eq $ctags} {
10872            set cached_atags($origid) $tags
10873        } else {
10874            set tags $ctags
10875        }
10876    } else {
10877        set cached_atags($origid) $tags
10878    }
10879    set t3 [clock clicks -milliseconds]
10880    if {0 && $t3 - $t1 >= 100} {
10881        puts "iterating ancestors ($loopix/[llength $todo] nodes) took\
10882            [expr {$t2-$t1}]+[expr {$t3-$t2}]ms, $nc candidates left"
10883    }
10884    return $tags
10885}
10886
10887# Return the list of IDs that have heads that are descendents of id,
10888# including id itself if it has a head.
10889proc descheads {id} {
10890    global arcnos arcstart arcids archeads idheads cached_dheads
10891    global allparents arcout
10892
10893    if {![info exists allparents($id)]} {
10894        return {}
10895    }
10896    set aret {}
10897    if {![info exists arcout($id)]} {
10898        # part-way along an arc; check it first
10899        set a [lindex $arcnos($id) 0]
10900        if {$archeads($a) ne {}} {
10901            validate_archeads $a
10902            set i [lsearch -exact $arcids($a) $id]
10903            foreach t $archeads($a) {
10904                set j [lsearch -exact $arcids($a) $t]
10905                if {$j > $i} break
10906                lappend aret $t
10907            }
10908        }
10909        set id $arcstart($a)
10910    }
10911    set origid $id
10912    set todo [list $id]
10913    set seen($id) 1
10914    set ret {}
10915    for {set i 0} {$i < [llength $todo]} {incr i} {
10916        set id [lindex $todo $i]
10917        if {[info exists cached_dheads($id)]} {
10918            set ret [concat $ret $cached_dheads($id)]
10919        } else {
10920            if {[info exists idheads($id)]} {
10921                lappend ret $id
10922            }
10923            foreach a $arcnos($id) {
10924                if {$archeads($a) ne {}} {
10925                    validate_archeads $a
10926                    if {$archeads($a) ne {}} {
10927                        set ret [concat $ret $archeads($a)]
10928                    }
10929                }
10930                set d $arcstart($a)
10931                if {![info exists seen($d)]} {
10932                    lappend todo $d
10933                    set seen($d) 1
10934                }
10935            }
10936        }
10937    }
10938    set ret [lsort -unique $ret]
10939    set cached_dheads($origid) $ret
10940    return [concat $ret $aret]
10941}
10942
10943proc addedtag {id} {
10944    global arcnos arcout cached_dtags cached_atags
10945
10946    if {![info exists arcnos($id)]} return
10947    if {![info exists arcout($id)]} {
10948        recalcarc [lindex $arcnos($id) 0]
10949    }
10950    catch {unset cached_dtags}
10951    catch {unset cached_atags}
10952}
10953
10954proc addedhead {hid head} {
10955    global arcnos arcout cached_dheads
10956
10957    if {![info exists arcnos($hid)]} return
10958    if {![info exists arcout($hid)]} {
10959        recalcarc [lindex $arcnos($hid) 0]
10960    }
10961    catch {unset cached_dheads}
10962}
10963
10964proc removedhead {hid head} {
10965    global cached_dheads
10966
10967    catch {unset cached_dheads}
10968}
10969
10970proc movedhead {hid head} {
10971    global arcnos arcout cached_dheads
10972
10973    if {![info exists arcnos($hid)]} return
10974    if {![info exists arcout($hid)]} {
10975        recalcarc [lindex $arcnos($hid) 0]
10976    }
10977    catch {unset cached_dheads}
10978}
10979
10980proc changedrefs {} {
10981    global cached_dheads cached_dtags cached_atags cached_tagcontent
10982    global arctags archeads arcnos arcout idheads idtags
10983
10984    foreach id [concat [array names idheads] [array names idtags]] {
10985        if {[info exists arcnos($id)] && ![info exists arcout($id)]} {
10986            set a [lindex $arcnos($id) 0]
10987            if {![info exists donearc($a)]} {
10988                recalcarc $a
10989                set donearc($a) 1
10990            }
10991        }
10992    }
10993    catch {unset cached_tagcontent}
10994    catch {unset cached_dtags}
10995    catch {unset cached_atags}
10996    catch {unset cached_dheads}
10997}
10998
10999proc rereadrefs {} {
11000    global idtags idheads idotherrefs mainheadid
11001
11002    set refids [concat [array names idtags] \
11003                    [array names idheads] [array names idotherrefs]]
11004    foreach id $refids {
11005        if {![info exists ref($id)]} {
11006            set ref($id) [listrefs $id]
11007        }
11008    }
11009    set oldmainhead $mainheadid
11010    readrefs
11011    changedrefs
11012    set refids [lsort -unique [concat $refids [array names idtags] \
11013                        [array names idheads] [array names idotherrefs]]]
11014    foreach id $refids {
11015        set v [listrefs $id]
11016        if {![info exists ref($id)] || $ref($id) != $v} {
11017            redrawtags $id
11018        }
11019    }
11020    if {$oldmainhead ne $mainheadid} {
11021        redrawtags $oldmainhead
11022        redrawtags $mainheadid
11023    }
11024    run refill_reflist
11025}
11026
11027proc listrefs {id} {
11028    global idtags idheads idotherrefs
11029
11030    set x {}
11031    if {[info exists idtags($id)]} {
11032        set x $idtags($id)
11033    }
11034    set y {}
11035    if {[info exists idheads($id)]} {
11036        set y $idheads($id)
11037    }
11038    set z {}
11039    if {[info exists idotherrefs($id)]} {
11040        set z $idotherrefs($id)
11041    }
11042    return [list $x $y $z]
11043}
11044
11045proc add_tag_ctext {tag} {
11046    global ctext cached_tagcontent tagids
11047
11048    if {![info exists cached_tagcontent($tag)]} {
11049        catch {
11050            set cached_tagcontent($tag) [exec git cat-file -p $tag]
11051        }
11052    }
11053    $ctext insert end "[mc "Tag"]: $tag\n" bold
11054    if {[info exists cached_tagcontent($tag)]} {
11055        set text $cached_tagcontent($tag)
11056    } else {
11057        set text "[mc "Id"]:  $tagids($tag)"
11058    }
11059    appendwithlinks $text {}
11060}
11061
11062proc showtag {tag isnew} {
11063    global ctext cached_tagcontent tagids linknum tagobjid
11064
11065    if {$isnew} {
11066        addtohistory [list showtag $tag 0] savectextpos
11067    }
11068    $ctext conf -state normal
11069    clear_ctext
11070    settabs 0
11071    set linknum 0
11072    add_tag_ctext $tag
11073    maybe_scroll_ctext 1
11074    $ctext conf -state disabled
11075    init_flist {}
11076}
11077
11078proc showtags {id isnew} {
11079    global idtags ctext linknum
11080
11081    if {$isnew} {
11082        addtohistory [list showtags $id 0] savectextpos
11083    }
11084    $ctext conf -state normal
11085    clear_ctext
11086    settabs 0
11087    set linknum 0
11088    set sep {}
11089    foreach tag $idtags($id) {
11090        $ctext insert end $sep
11091        add_tag_ctext $tag
11092        set sep "\n\n"
11093    }
11094    maybe_scroll_ctext 1
11095    $ctext conf -state disabled
11096    init_flist {}
11097}
11098
11099proc doquit {} {
11100    global stopped
11101    global gitktmpdir
11102
11103    set stopped 100
11104    savestuff .
11105    destroy .
11106
11107    if {[info exists gitktmpdir]} {
11108        catch {file delete -force $gitktmpdir}
11109    }
11110}
11111
11112proc mkfontdisp {font top which} {
11113    global fontattr fontpref $font NS use_ttk
11114
11115    set fontpref($font) [set $font]
11116    ${NS}::button $top.${font}but -text $which \
11117        -command [list choosefont $font $which]
11118    ${NS}::label $top.$font -relief flat -font $font \
11119        -text $fontattr($font,family) -justify left
11120    grid x $top.${font}but $top.$font -sticky w
11121}
11122
11123proc choosefont {font which} {
11124    global fontparam fontlist fonttop fontattr
11125    global prefstop NS
11126
11127    set fontparam(which) $which
11128    set fontparam(font) $font
11129    set fontparam(family) [font actual $font -family]
11130    set fontparam(size) $fontattr($font,size)
11131    set fontparam(weight) $fontattr($font,weight)
11132    set fontparam(slant) $fontattr($font,slant)
11133    set top .gitkfont
11134    set fonttop $top
11135    if {![winfo exists $top]} {
11136        font create sample
11137        eval font config sample [font actual $font]
11138        ttk_toplevel $top
11139        make_transient $top $prefstop
11140        wm title $top [mc "Gitk font chooser"]
11141        ${NS}::label $top.l -textvariable fontparam(which)
11142        pack $top.l -side top
11143        set fontlist [lsort [font families]]
11144        ${NS}::frame $top.f
11145        listbox $top.f.fam -listvariable fontlist \
11146            -yscrollcommand [list $top.f.sb set]
11147        bind $top.f.fam <<ListboxSelect>> selfontfam
11148        ${NS}::scrollbar $top.f.sb -command [list $top.f.fam yview]
11149        pack $top.f.sb -side right -fill y
11150        pack $top.f.fam -side left -fill both -expand 1
11151        pack $top.f -side top -fill both -expand 1
11152        ${NS}::frame $top.g
11153        spinbox $top.g.size -from 4 -to 40 -width 4 \
11154            -textvariable fontparam(size) \
11155            -validatecommand {string is integer -strict %s}
11156        checkbutton $top.g.bold -padx 5 \
11157            -font {{Times New Roman} 12 bold} -text [mc "B"] -indicatoron 0 \
11158            -variable fontparam(weight) -onvalue bold -offvalue normal
11159        checkbutton $top.g.ital -padx 5 \
11160            -font {{Times New Roman} 12 italic} -text [mc "I"] -indicatoron 0  \
11161            -variable fontparam(slant) -onvalue italic -offvalue roman
11162        pack $top.g.size $top.g.bold $top.g.ital -side left
11163        pack $top.g -side top
11164        canvas $top.c -width 150 -height 50 -border 2 -relief sunk \
11165            -background white
11166        $top.c create text 100 25 -anchor center -text $which -font sample \
11167            -fill black -tags text
11168        bind $top.c <Configure> [list centertext $top.c]
11169        pack $top.c -side top -fill x
11170        ${NS}::frame $top.buts
11171        ${NS}::button $top.buts.ok -text [mc "OK"] -command fontok -default active
11172        ${NS}::button $top.buts.can -text [mc "Cancel"] -command fontcan -default normal
11173        bind $top <Key-Return> fontok
11174        bind $top <Key-Escape> fontcan
11175        grid $top.buts.ok $top.buts.can
11176        grid columnconfigure $top.buts 0 -weight 1 -uniform a
11177        grid columnconfigure $top.buts 1 -weight 1 -uniform a
11178        pack $top.buts -side bottom -fill x
11179        trace add variable fontparam write chg_fontparam
11180    } else {
11181        raise $top
11182        $top.c itemconf text -text $which
11183    }
11184    set i [lsearch -exact $fontlist $fontparam(family)]
11185    if {$i >= 0} {
11186        $top.f.fam selection set $i
11187        $top.f.fam see $i
11188    }
11189}
11190
11191proc centertext {w} {
11192    $w coords text [expr {[winfo width $w] / 2}] [expr {[winfo height $w] / 2}]
11193}
11194
11195proc fontok {} {
11196    global fontparam fontpref prefstop
11197
11198    set f $fontparam(font)
11199    set fontpref($f) [list $fontparam(family) $fontparam(size)]
11200    if {$fontparam(weight) eq "bold"} {
11201        lappend fontpref($f) "bold"
11202    }
11203    if {$fontparam(slant) eq "italic"} {
11204        lappend fontpref($f) "italic"
11205    }
11206    set w $prefstop.notebook.fonts.$f
11207    $w conf -text $fontparam(family) -font $fontpref($f)
11208
11209    fontcan
11210}
11211
11212proc fontcan {} {
11213    global fonttop fontparam
11214
11215    if {[info exists fonttop]} {
11216        catch {destroy $fonttop}
11217        catch {font delete sample}
11218        unset fonttop
11219        unset fontparam
11220    }
11221}
11222
11223if {[package vsatisfies [package provide Tk] 8.6]} {
11224    # In Tk 8.6 we have a native font chooser dialog. Overwrite the above
11225    # function to make use of it.
11226    proc choosefont {font which} {
11227        tk fontchooser configure -title $which -font $font \
11228            -command [list on_choosefont $font $which]
11229        tk fontchooser show
11230    }
11231    proc on_choosefont {font which newfont} {
11232        global fontparam
11233        puts stderr "$font $newfont"
11234        array set f [font actual $newfont]
11235        set fontparam(which) $which
11236        set fontparam(font) $font
11237        set fontparam(family) $f(-family)
11238        set fontparam(size) $f(-size)
11239        set fontparam(weight) $f(-weight)
11240        set fontparam(slant) $f(-slant)
11241        fontok
11242    }
11243}
11244
11245proc selfontfam {} {
11246    global fonttop fontparam
11247
11248    set i [$fonttop.f.fam curselection]
11249    if {$i ne {}} {
11250        set fontparam(family) [$fonttop.f.fam get $i]
11251    }
11252}
11253
11254proc chg_fontparam {v sub op} {
11255    global fontparam
11256
11257    font config sample -$sub $fontparam($sub)
11258}
11259
11260# Create a property sheet tab page
11261proc create_prefs_page {w} {
11262    global NS
11263    set parent [join [lrange [split $w .] 0 end-1] .]
11264    if {[winfo class $parent] eq "TNotebook"} {
11265        ${NS}::frame $w
11266    } else {
11267        ${NS}::labelframe $w
11268    }
11269}
11270
11271proc prefspage_general {notebook} {
11272    global NS maxwidth maxgraphpct showneartags showlocalchanges
11273    global tabstop limitdiffs autoselect autosellen extdifftool perfile_attrs
11274    global hideremotes want_ttk have_ttk maxrefs
11275
11276    set page [create_prefs_page $notebook.general]
11277
11278    ${NS}::label $page.ldisp -text [mc "Commit list display options"]
11279    grid $page.ldisp - -sticky w -pady 10
11280    ${NS}::label $page.spacer -text " "
11281    ${NS}::label $page.maxwidthl -text [mc "Maximum graph width (lines)"]
11282    spinbox $page.maxwidth -from 0 -to 100 -width 4 -textvariable maxwidth
11283    grid $page.spacer $page.maxwidthl $page.maxwidth -sticky w
11284    ${NS}::label $page.maxpctl -text [mc "Maximum graph width (% of pane)"]
11285    spinbox $page.maxpct -from 1 -to 100 -width 4 -textvariable maxgraphpct
11286    grid x $page.maxpctl $page.maxpct -sticky w
11287    ${NS}::checkbutton $page.showlocal -text [mc "Show local changes"] \
11288        -variable showlocalchanges
11289    grid x $page.showlocal -sticky w
11290    ${NS}::checkbutton $page.autoselect -text [mc "Auto-select SHA1 (length)"] \
11291        -variable autoselect
11292    spinbox $page.autosellen -from 1 -to 40 -width 4 -textvariable autosellen
11293    grid x $page.autoselect $page.autosellen -sticky w
11294    ${NS}::checkbutton $page.hideremotes -text [mc "Hide remote refs"] \
11295        -variable hideremotes
11296    grid x $page.hideremotes -sticky w
11297
11298    ${NS}::label $page.ddisp -text [mc "Diff display options"]
11299    grid $page.ddisp - -sticky w -pady 10
11300    ${NS}::label $page.tabstopl -text [mc "Tab spacing"]
11301    spinbox $page.tabstop -from 1 -to 20 -width 4 -textvariable tabstop
11302    grid x $page.tabstopl $page.tabstop -sticky w
11303    ${NS}::checkbutton $page.ntag -text [mc "Display nearby tags/heads"] \
11304        -variable showneartags
11305    grid x $page.ntag -sticky w
11306    ${NS}::label $page.maxrefsl -text [mc "Maximum # tags/heads to show"]
11307    spinbox $page.maxrefs -from 1 -to 1000 -width 4 -textvariable maxrefs
11308    grid x $page.maxrefsl $page.maxrefs -sticky w
11309    ${NS}::checkbutton $page.ldiff -text [mc "Limit diffs to listed paths"] \
11310        -variable limitdiffs
11311    grid x $page.ldiff -sticky w
11312    ${NS}::checkbutton $page.lattr -text [mc "Support per-file encodings"] \
11313        -variable perfile_attrs
11314    grid x $page.lattr -sticky w
11315
11316    ${NS}::entry $page.extdifft -textvariable extdifftool
11317    ${NS}::frame $page.extdifff
11318    ${NS}::label $page.extdifff.l -text [mc "External diff tool" ]
11319    ${NS}::button $page.extdifff.b -text [mc "Choose..."] -command choose_extdiff
11320    pack $page.extdifff.l $page.extdifff.b -side left
11321    pack configure $page.extdifff.l -padx 10
11322    grid x $page.extdifff $page.extdifft -sticky ew
11323
11324    ${NS}::label $page.lgen -text [mc "General options"]
11325    grid $page.lgen - -sticky w -pady 10
11326    ${NS}::checkbutton $page.want_ttk -variable want_ttk \
11327        -text [mc "Use themed widgets"]
11328    if {$have_ttk} {
11329        ${NS}::label $page.ttk_note -text [mc "(change requires restart)"]
11330    } else {
11331        ${NS}::label $page.ttk_note -text [mc "(currently unavailable)"]
11332    }
11333    grid x $page.want_ttk $page.ttk_note -sticky w
11334    return $page
11335}
11336
11337proc prefspage_colors {notebook} {
11338    global NS uicolor bgcolor fgcolor ctext diffcolors selectbgcolor markbgcolor
11339
11340    set page [create_prefs_page $notebook.colors]
11341
11342    ${NS}::label $page.cdisp -text [mc "Colors: press to choose"]
11343    grid $page.cdisp - -sticky w -pady 10
11344    label $page.ui -padx 40 -relief sunk -background $uicolor
11345    ${NS}::button $page.uibut -text [mc "Interface"] \
11346       -command [list choosecolor uicolor {} $page.ui [mc "interface"] setui]
11347    grid x $page.uibut $page.ui -sticky w
11348    label $page.bg -padx 40 -relief sunk -background $bgcolor
11349    ${NS}::button $page.bgbut -text [mc "Background"] \
11350        -command [list choosecolor bgcolor {} $page.bg [mc "background"] setbg]
11351    grid x $page.bgbut $page.bg -sticky w
11352    label $page.fg -padx 40 -relief sunk -background $fgcolor
11353    ${NS}::button $page.fgbut -text [mc "Foreground"] \
11354        -command [list choosecolor fgcolor {} $page.fg [mc "foreground"] setfg]
11355    grid x $page.fgbut $page.fg -sticky w
11356    label $page.diffold -padx 40 -relief sunk -background [lindex $diffcolors 0]
11357    ${NS}::button $page.diffoldbut -text [mc "Diff: old lines"] \
11358        -command [list choosecolor diffcolors 0 $page.diffold [mc "diff old lines"] \
11359                      [list $ctext tag conf d0 -foreground]]
11360    grid x $page.diffoldbut $page.diffold -sticky w
11361    label $page.diffnew -padx 40 -relief sunk -background [lindex $diffcolors 1]
11362    ${NS}::button $page.diffnewbut -text [mc "Diff: new lines"] \
11363        -command [list choosecolor diffcolors 1 $page.diffnew [mc "diff new lines"] \
11364                      [list $ctext tag conf dresult -foreground]]
11365    grid x $page.diffnewbut $page.diffnew -sticky w
11366    label $page.hunksep -padx 40 -relief sunk -background [lindex $diffcolors 2]
11367    ${NS}::button $page.hunksepbut -text [mc "Diff: hunk header"] \
11368        -command [list choosecolor diffcolors 2 $page.hunksep \
11369                      [mc "diff hunk header"] \
11370                      [list $ctext tag conf hunksep -foreground]]
11371    grid x $page.hunksepbut $page.hunksep -sticky w
11372    label $page.markbgsep -padx 40 -relief sunk -background $markbgcolor
11373    ${NS}::button $page.markbgbut -text [mc "Marked line bg"] \
11374        -command [list choosecolor markbgcolor {} $page.markbgsep \
11375                      [mc "marked line background"] \
11376                      [list $ctext tag conf omark -background]]
11377    grid x $page.markbgbut $page.markbgsep -sticky w
11378    label $page.selbgsep -padx 40 -relief sunk -background $selectbgcolor
11379    ${NS}::button $page.selbgbut -text [mc "Select bg"] \
11380        -command [list choosecolor selectbgcolor {} $page.selbgsep [mc "background"] setselbg]
11381    grid x $page.selbgbut $page.selbgsep -sticky w
11382    return $page
11383}
11384
11385proc prefspage_fonts {notebook} {
11386    global NS
11387    set page [create_prefs_page $notebook.fonts]
11388    ${NS}::label $page.cfont -text [mc "Fonts: press to choose"]
11389    grid $page.cfont - -sticky w -pady 10
11390    mkfontdisp mainfont $page [mc "Main font"]
11391    mkfontdisp textfont $page [mc "Diff display font"]
11392    mkfontdisp uifont $page [mc "User interface font"]
11393    return $page
11394}
11395
11396proc doprefs {} {
11397    global maxwidth maxgraphpct use_ttk NS
11398    global oldprefs prefstop showneartags showlocalchanges
11399    global uicolor bgcolor fgcolor ctext diffcolors selectbgcolor markbgcolor
11400    global tabstop limitdiffs autoselect autosellen extdifftool perfile_attrs
11401    global hideremotes want_ttk have_ttk
11402
11403    set top .gitkprefs
11404    set prefstop $top
11405    if {[winfo exists $top]} {
11406        raise $top
11407        return
11408    }
11409    foreach v {maxwidth maxgraphpct showneartags showlocalchanges \
11410                   limitdiffs tabstop perfile_attrs hideremotes want_ttk} {
11411        set oldprefs($v) [set $v]
11412    }
11413    ttk_toplevel $top
11414    wm title $top [mc "Gitk preferences"]
11415    make_transient $top .
11416
11417    if {[set use_notebook [expr {$use_ttk && [info command ::ttk::notebook] ne ""}]]} {
11418        set notebook [ttk::notebook $top.notebook]
11419    } else {
11420        set notebook [${NS}::frame $top.notebook -borderwidth 0 -relief flat]
11421    }
11422
11423    lappend pages [prefspage_general $notebook] [mc "General"]
11424    lappend pages [prefspage_colors $notebook] [mc "Colors"]
11425    lappend pages [prefspage_fonts $notebook] [mc "Fonts"]
11426    set col 0
11427    foreach {page title} $pages {
11428        if {$use_notebook} {
11429            $notebook add $page -text $title
11430        } else {
11431            set btn [${NS}::button $notebook.b_[string map {. X} $page] \
11432                         -text $title -command [list raise $page]]
11433            $page configure -text $title
11434            grid $btn -row 0 -column [incr col] -sticky w
11435            grid $page -row 1 -column 0 -sticky news -columnspan 100
11436        }
11437    }
11438
11439    if {!$use_notebook} {
11440        grid columnconfigure $notebook 0 -weight 1
11441        grid rowconfigure $notebook 1 -weight 1
11442        raise [lindex $pages 0]
11443    }
11444
11445    grid $notebook -sticky news -padx 2 -pady 2
11446    grid rowconfigure $top 0 -weight 1
11447    grid columnconfigure $top 0 -weight 1
11448
11449    ${NS}::frame $top.buts
11450    ${NS}::button $top.buts.ok -text [mc "OK"] -command prefsok -default active
11451    ${NS}::button $top.buts.can -text [mc "Cancel"] -command prefscan -default normal
11452    bind $top <Key-Return> prefsok
11453    bind $top <Key-Escape> prefscan
11454    grid $top.buts.ok $top.buts.can
11455    grid columnconfigure $top.buts 0 -weight 1 -uniform a
11456    grid columnconfigure $top.buts 1 -weight 1 -uniform a
11457    grid $top.buts - - -pady 10 -sticky ew
11458    grid columnconfigure $top 2 -weight 1
11459    bind $top <Visibility> [list focus $top.buts.ok]
11460}
11461
11462proc choose_extdiff {} {
11463    global extdifftool
11464
11465    set prog [tk_getOpenFile -title [mc "External diff tool"] -multiple false]
11466    if {$prog ne {}} {
11467        set extdifftool $prog
11468    }
11469}
11470
11471proc choosecolor {v vi w x cmd} {
11472    global $v
11473
11474    set c [tk_chooseColor -initialcolor [lindex [set $v] $vi] \
11475               -title [mc "Gitk: choose color for %s" $x]]
11476    if {$c eq {}} return
11477    $w conf -background $c
11478    lset $v $vi $c
11479    eval $cmd $c
11480}
11481
11482proc setselbg {c} {
11483    global bglist cflist
11484    foreach w $bglist {
11485        $w configure -selectbackground $c
11486    }
11487    $cflist tag configure highlight \
11488        -background [$cflist cget -selectbackground]
11489    allcanvs itemconf secsel -fill $c
11490}
11491
11492# This sets the background color and the color scheme for the whole UI.
11493# For some reason, tk_setPalette chooses a nasty dark red for selectColor
11494# if we don't specify one ourselves, which makes the checkbuttons and
11495# radiobuttons look bad.  This chooses white for selectColor if the
11496# background color is light, or black if it is dark.
11497proc setui {c} {
11498    if {[tk windowingsystem] eq "win32"} { return }
11499    set bg [winfo rgb . $c]
11500    set selc black
11501    if {[lindex $bg 0] + 1.5 * [lindex $bg 1] + 0.5 * [lindex $bg 2] > 100000} {
11502        set selc white
11503    }
11504    tk_setPalette background $c selectColor $selc
11505}
11506
11507proc setbg {c} {
11508    global bglist
11509
11510    foreach w $bglist {
11511        $w conf -background $c
11512    }
11513}
11514
11515proc setfg {c} {
11516    global fglist canv
11517
11518    foreach w $fglist {
11519        $w conf -foreground $c
11520    }
11521    allcanvs itemconf text -fill $c
11522    $canv itemconf circle -outline $c
11523    $canv itemconf markid -outline $c
11524}
11525
11526proc prefscan {} {
11527    global oldprefs prefstop
11528
11529    foreach v {maxwidth maxgraphpct showneartags showlocalchanges \
11530                   limitdiffs tabstop perfile_attrs hideremotes want_ttk} {
11531        global $v
11532        set $v $oldprefs($v)
11533    }
11534    catch {destroy $prefstop}
11535    unset prefstop
11536    fontcan
11537}
11538
11539proc prefsok {} {
11540    global maxwidth maxgraphpct
11541    global oldprefs prefstop showneartags showlocalchanges
11542    global fontpref mainfont textfont uifont
11543    global limitdiffs treediffs perfile_attrs
11544    global hideremotes
11545
11546    catch {destroy $prefstop}
11547    unset prefstop
11548    fontcan
11549    set fontchanged 0
11550    if {$mainfont ne $fontpref(mainfont)} {
11551        set mainfont $fontpref(mainfont)
11552        parsefont mainfont $mainfont
11553        eval font configure mainfont [fontflags mainfont]
11554        eval font configure mainfontbold [fontflags mainfont 1]
11555        setcoords
11556        set fontchanged 1
11557    }
11558    if {$textfont ne $fontpref(textfont)} {
11559        set textfont $fontpref(textfont)
11560        parsefont textfont $textfont
11561        eval font configure textfont [fontflags textfont]
11562        eval font configure textfontbold [fontflags textfont 1]
11563    }
11564    if {$uifont ne $fontpref(uifont)} {
11565        set uifont $fontpref(uifont)
11566        parsefont uifont $uifont
11567        eval font configure uifont [fontflags uifont]
11568    }
11569    settabs
11570    if {$showlocalchanges != $oldprefs(showlocalchanges)} {
11571        if {$showlocalchanges} {
11572            doshowlocalchanges
11573        } else {
11574            dohidelocalchanges
11575        }
11576    }
11577    if {$limitdiffs != $oldprefs(limitdiffs) ||
11578        ($perfile_attrs && !$oldprefs(perfile_attrs))} {
11579        # treediffs elements are limited by path;
11580        # won't have encodings cached if perfile_attrs was just turned on
11581        catch {unset treediffs}
11582    }
11583    if {$fontchanged || $maxwidth != $oldprefs(maxwidth)
11584        || $maxgraphpct != $oldprefs(maxgraphpct)} {
11585        redisplay
11586    } elseif {$showneartags != $oldprefs(showneartags) ||
11587          $limitdiffs != $oldprefs(limitdiffs)} {
11588        reselectline
11589    }
11590    if {$hideremotes != $oldprefs(hideremotes)} {
11591        rereadrefs
11592    }
11593}
11594
11595proc formatdate {d} {
11596    global datetimeformat
11597    if {$d ne {}} {
11598        # If $datetimeformat includes a timezone, display in the
11599        # timezone of the argument.  Otherwise, display in local time.
11600        if {[string match {*%[zZ]*} $datetimeformat]} {
11601            if {[catch {set d [clock format [lindex $d 0] -timezone [lindex $d 1] -format $datetimeformat]}]} {
11602                # Tcl < 8.5 does not support -timezone.  Emulate it by
11603                # setting TZ (e.g. TZ=<-0430>+04:30).
11604                global env
11605                if {[info exists env(TZ)]} {
11606                    set savedTZ $env(TZ)
11607                }
11608                set zone [lindex $d 1]
11609                set sign [string map {+ - - +} [string index $zone 0]]
11610                set env(TZ) <$zone>$sign[string range $zone 1 2]:[string range $zone 3 4]
11611                set d [clock format [lindex $d 0] -format $datetimeformat]
11612                if {[info exists savedTZ]} {
11613                    set env(TZ) $savedTZ
11614                } else {
11615                    unset env(TZ)
11616                }
11617            }
11618        } else {
11619            set d [clock format [lindex $d 0] -format $datetimeformat]
11620        }
11621    }
11622    return $d
11623}
11624
11625# This list of encoding names and aliases is distilled from
11626# http://www.iana.org/assignments/character-sets.
11627# Not all of them are supported by Tcl.
11628set encoding_aliases {
11629    { ANSI_X3.4-1968 iso-ir-6 ANSI_X3.4-1986 ISO_646.irv:1991 ASCII
11630      ISO646-US US-ASCII us IBM367 cp367 csASCII }
11631    { ISO-10646-UTF-1 csISO10646UTF1 }
11632    { ISO_646.basic:1983 ref csISO646basic1983 }
11633    { INVARIANT csINVARIANT }
11634    { ISO_646.irv:1983 iso-ir-2 irv csISO2IntlRefVersion }
11635    { BS_4730 iso-ir-4 ISO646-GB gb uk csISO4UnitedKingdom }
11636    { NATS-SEFI iso-ir-8-1 csNATSSEFI }
11637    { NATS-SEFI-ADD iso-ir-8-2 csNATSSEFIADD }
11638    { NATS-DANO iso-ir-9-1 csNATSDANO }
11639    { NATS-DANO-ADD iso-ir-9-2 csNATSDANOADD }
11640    { SEN_850200_B iso-ir-10 FI ISO646-FI ISO646-SE se csISO10Swedish }
11641    { SEN_850200_C iso-ir-11 ISO646-SE2 se2 csISO11SwedishForNames }
11642    { KS_C_5601-1987 iso-ir-149 KS_C_5601-1989 KSC_5601 korean csKSC56011987 }
11643    { ISO-2022-KR csISO2022KR }
11644    { EUC-KR csEUCKR }
11645    { ISO-2022-JP csISO2022JP }
11646    { ISO-2022-JP-2 csISO2022JP2 }
11647    { JIS_C6220-1969-jp JIS_C6220-1969 iso-ir-13 katakana x0201-7
11648      csISO13JISC6220jp }
11649    { JIS_C6220-1969-ro iso-ir-14 jp ISO646-JP csISO14JISC6220ro }
11650    { IT iso-ir-15 ISO646-IT csISO15Italian }
11651    { PT iso-ir-16 ISO646-PT csISO16Portuguese }
11652    { ES iso-ir-17 ISO646-ES csISO17Spanish }
11653    { greek7-old iso-ir-18 csISO18Greek7Old }
11654    { latin-greek iso-ir-19 csISO19LatinGreek }
11655    { DIN_66003 iso-ir-21 de ISO646-DE csISO21German }
11656    { NF_Z_62-010_(1973) iso-ir-25 ISO646-FR1 csISO25French }
11657    { Latin-greek-1 iso-ir-27 csISO27LatinGreek1 }
11658    { ISO_5427 iso-ir-37 csISO5427Cyrillic }
11659    { JIS_C6226-1978 iso-ir-42 csISO42JISC62261978 }
11660    { BS_viewdata iso-ir-47 csISO47BSViewdata }
11661    { INIS iso-ir-49 csISO49INIS }
11662    { INIS-8 iso-ir-50 csISO50INIS8 }
11663    { INIS-cyrillic iso-ir-51 csISO51INISCyrillic }
11664    { ISO_5427:1981 iso-ir-54 ISO5427Cyrillic1981 }
11665    { ISO_5428:1980 iso-ir-55 csISO5428Greek }
11666    { GB_1988-80 iso-ir-57 cn ISO646-CN csISO57GB1988 }
11667    { GB_2312-80 iso-ir-58 chinese csISO58GB231280 }
11668    { NS_4551-1 iso-ir-60 ISO646-NO no csISO60DanishNorwegian
11669      csISO60Norwegian1 }
11670    { NS_4551-2 ISO646-NO2 iso-ir-61 no2 csISO61Norwegian2 }
11671    { NF_Z_62-010 iso-ir-69 ISO646-FR fr csISO69French }
11672    { videotex-suppl iso-ir-70 csISO70VideotexSupp1 }
11673    { PT2 iso-ir-84 ISO646-PT2 csISO84Portuguese2 }
11674    { ES2 iso-ir-85 ISO646-ES2 csISO85Spanish2 }
11675    { MSZ_7795.3 iso-ir-86 ISO646-HU hu csISO86Hungarian }
11676    { JIS_C6226-1983 iso-ir-87 x0208 JIS_X0208-1983 csISO87JISX0208 }
11677    { greek7 iso-ir-88 csISO88Greek7 }
11678    { ASMO_449 ISO_9036 arabic7 iso-ir-89 csISO89ASMO449 }
11679    { iso-ir-90 csISO90 }
11680    { JIS_C6229-1984-a iso-ir-91 jp-ocr-a csISO91JISC62291984a }
11681    { JIS_C6229-1984-b iso-ir-92 ISO646-JP-OCR-B jp-ocr-b
11682      csISO92JISC62991984b }
11683    { JIS_C6229-1984-b-add iso-ir-93 jp-ocr-b-add csISO93JIS62291984badd }
11684    { JIS_C6229-1984-hand iso-ir-94 jp-ocr-hand csISO94JIS62291984hand }
11685    { JIS_C6229-1984-hand-add iso-ir-95 jp-ocr-hand-add
11686      csISO95JIS62291984handadd }
11687    { JIS_C6229-1984-kana iso-ir-96 csISO96JISC62291984kana }
11688    { ISO_2033-1983 iso-ir-98 e13b csISO2033 }
11689    { ANSI_X3.110-1983 iso-ir-99 CSA_T500-1983 NAPLPS csISO99NAPLPS }
11690    { ISO_8859-1:1987 iso-ir-100 ISO_8859-1 ISO-8859-1 latin1 l1 IBM819
11691      CP819 csISOLatin1 }
11692    { ISO_8859-2:1987 iso-ir-101 ISO_8859-2 ISO-8859-2 latin2 l2 csISOLatin2 }
11693    { T.61-7bit iso-ir-102 csISO102T617bit }
11694    { T.61-8bit T.61 iso-ir-103 csISO103T618bit }
11695    { ISO_8859-3:1988 iso-ir-109 ISO_8859-3 ISO-8859-3 latin3 l3 csISOLatin3 }
11696    { ISO_8859-4:1988 iso-ir-110 ISO_8859-4 ISO-8859-4 latin4 l4 csISOLatin4 }
11697    { ECMA-cyrillic iso-ir-111 KOI8-E csISO111ECMACyrillic }
11698    { CSA_Z243.4-1985-1 iso-ir-121 ISO646-CA csa7-1 ca csISO121Canadian1 }
11699    { CSA_Z243.4-1985-2 iso-ir-122 ISO646-CA2 csa7-2 csISO122Canadian2 }
11700    { CSA_Z243.4-1985-gr iso-ir-123 csISO123CSAZ24341985gr }
11701    { ISO_8859-6:1987 iso-ir-127 ISO_8859-6 ISO-8859-6 ECMA-114 ASMO-708
11702      arabic csISOLatinArabic }
11703    { ISO_8859-6-E csISO88596E ISO-8859-6-E }
11704    { ISO_8859-6-I csISO88596I ISO-8859-6-I }
11705    { ISO_8859-7:1987 iso-ir-126 ISO_8859-7 ISO-8859-7 ELOT_928 ECMA-118
11706      greek greek8 csISOLatinGreek }
11707    { T.101-G2 iso-ir-128 csISO128T101G2 }
11708    { ISO_8859-8:1988 iso-ir-138 ISO_8859-8 ISO-8859-8 hebrew
11709      csISOLatinHebrew }
11710    { ISO_8859-8-E csISO88598E ISO-8859-8-E }
11711    { ISO_8859-8-I csISO88598I ISO-8859-8-I }
11712    { CSN_369103 iso-ir-139 csISO139CSN369103 }
11713    { JUS_I.B1.002 iso-ir-141 ISO646-YU js yu csISO141JUSIB1002 }
11714    { ISO_6937-2-add iso-ir-142 csISOTextComm }
11715    { IEC_P27-1 iso-ir-143 csISO143IECP271 }
11716    { ISO_8859-5:1988 iso-ir-144 ISO_8859-5 ISO-8859-5 cyrillic
11717      csISOLatinCyrillic }
11718    { JUS_I.B1.003-serb iso-ir-146 serbian csISO146Serbian }
11719    { JUS_I.B1.003-mac macedonian iso-ir-147 csISO147Macedonian }
11720    { ISO_8859-9:1989 iso-ir-148 ISO_8859-9 ISO-8859-9 latin5 l5 csISOLatin5 }
11721    { greek-ccitt iso-ir-150 csISO150 csISO150GreekCCITT }
11722    { NC_NC00-10:81 cuba iso-ir-151 ISO646-CU csISO151Cuba }
11723    { ISO_6937-2-25 iso-ir-152 csISO6937Add }
11724    { GOST_19768-74 ST_SEV_358-88 iso-ir-153 csISO153GOST1976874 }
11725    { ISO_8859-supp iso-ir-154 latin1-2-5 csISO8859Supp }
11726    { ISO_10367-box iso-ir-155 csISO10367Box }
11727    { ISO-8859-10 iso-ir-157 l6 ISO_8859-10:1992 csISOLatin6 latin6 }
11728    { latin-lap lap iso-ir-158 csISO158Lap }
11729    { JIS_X0212-1990 x0212 iso-ir-159 csISO159JISX02121990 }
11730    { DS_2089 DS2089 ISO646-DK dk csISO646Danish }
11731    { us-dk csUSDK }
11732    { dk-us csDKUS }
11733    { JIS_X0201 X0201 csHalfWidthKatakana }
11734    { KSC5636 ISO646-KR csKSC5636 }
11735    { ISO-10646-UCS-2 csUnicode }
11736    { ISO-10646-UCS-4 csUCS4 }
11737    { DEC-MCS dec csDECMCS }
11738    { hp-roman8 roman8 r8 csHPRoman8 }
11739    { macintosh mac csMacintosh }
11740    { IBM037 cp037 ebcdic-cp-us ebcdic-cp-ca ebcdic-cp-wt ebcdic-cp-nl
11741      csIBM037 }
11742    { IBM038 EBCDIC-INT cp038 csIBM038 }
11743    { IBM273 CP273 csIBM273 }
11744    { IBM274 EBCDIC-BE CP274 csIBM274 }
11745    { IBM275 EBCDIC-BR cp275 csIBM275 }
11746    { IBM277 EBCDIC-CP-DK EBCDIC-CP-NO csIBM277 }
11747    { IBM278 CP278 ebcdic-cp-fi ebcdic-cp-se csIBM278 }
11748    { IBM280 CP280 ebcdic-cp-it csIBM280 }
11749    { IBM281 EBCDIC-JP-E cp281 csIBM281 }
11750    { IBM284 CP284 ebcdic-cp-es csIBM284 }
11751    { IBM285 CP285 ebcdic-cp-gb csIBM285 }
11752    { IBM290 cp290 EBCDIC-JP-kana csIBM290 }
11753    { IBM297 cp297 ebcdic-cp-fr csIBM297 }
11754    { IBM420 cp420 ebcdic-cp-ar1 csIBM420 }
11755    { IBM423 cp423 ebcdic-cp-gr csIBM423 }
11756    { IBM424 cp424 ebcdic-cp-he csIBM424 }
11757    { IBM437 cp437 437 csPC8CodePage437 }
11758    { IBM500 CP500 ebcdic-cp-be ebcdic-cp-ch csIBM500 }
11759    { IBM775 cp775 csPC775Baltic }
11760    { IBM850 cp850 850 csPC850Multilingual }
11761    { IBM851 cp851 851 csIBM851 }
11762    { IBM852 cp852 852 csPCp852 }
11763    { IBM855 cp855 855 csIBM855 }
11764    { IBM857 cp857 857 csIBM857 }
11765    { IBM860 cp860 860 csIBM860 }
11766    { IBM861 cp861 861 cp-is csIBM861 }
11767    { IBM862 cp862 862 csPC862LatinHebrew }
11768    { IBM863 cp863 863 csIBM863 }
11769    { IBM864 cp864 csIBM864 }
11770    { IBM865 cp865 865 csIBM865 }
11771    { IBM866 cp866 866 csIBM866 }
11772    { IBM868 CP868 cp-ar csIBM868 }
11773    { IBM869 cp869 869 cp-gr csIBM869 }
11774    { IBM870 CP870 ebcdic-cp-roece ebcdic-cp-yu csIBM870 }
11775    { IBM871 CP871 ebcdic-cp-is csIBM871 }
11776    { IBM880 cp880 EBCDIC-Cyrillic csIBM880 }
11777    { IBM891 cp891 csIBM891 }
11778    { IBM903 cp903 csIBM903 }
11779    { IBM904 cp904 904 csIBBM904 }
11780    { IBM905 CP905 ebcdic-cp-tr csIBM905 }
11781    { IBM918 CP918 ebcdic-cp-ar2 csIBM918 }
11782    { IBM1026 CP1026 csIBM1026 }
11783    { EBCDIC-AT-DE csIBMEBCDICATDE }
11784    { EBCDIC-AT-DE-A csEBCDICATDEA }
11785    { EBCDIC-CA-FR csEBCDICCAFR }
11786    { EBCDIC-DK-NO csEBCDICDKNO }
11787    { EBCDIC-DK-NO-A csEBCDICDKNOA }
11788    { EBCDIC-FI-SE csEBCDICFISE }
11789    { EBCDIC-FI-SE-A csEBCDICFISEA }
11790    { EBCDIC-FR csEBCDICFR }
11791    { EBCDIC-IT csEBCDICIT }
11792    { EBCDIC-PT csEBCDICPT }
11793    { EBCDIC-ES csEBCDICES }
11794    { EBCDIC-ES-A csEBCDICESA }
11795    { EBCDIC-ES-S csEBCDICESS }
11796    { EBCDIC-UK csEBCDICUK }
11797    { EBCDIC-US csEBCDICUS }
11798    { UNKNOWN-8BIT csUnknown8BiT }
11799    { MNEMONIC csMnemonic }
11800    { MNEM csMnem }
11801    { VISCII csVISCII }
11802    { VIQR csVIQR }
11803    { KOI8-R csKOI8R }
11804    { IBM00858 CCSID00858 CP00858 PC-Multilingual-850+euro }
11805    { IBM00924 CCSID00924 CP00924 ebcdic-Latin9--euro }
11806    { IBM01140 CCSID01140 CP01140 ebcdic-us-37+euro }
11807    { IBM01141 CCSID01141 CP01141 ebcdic-de-273+euro }
11808    { IBM01142 CCSID01142 CP01142 ebcdic-dk-277+euro ebcdic-no-277+euro }
11809    { IBM01143 CCSID01143 CP01143 ebcdic-fi-278+euro ebcdic-se-278+euro }
11810    { IBM01144 CCSID01144 CP01144 ebcdic-it-280+euro }
11811    { IBM01145 CCSID01145 CP01145 ebcdic-es-284+euro }
11812    { IBM01146 CCSID01146 CP01146 ebcdic-gb-285+euro }
11813    { IBM01147 CCSID01147 CP01147 ebcdic-fr-297+euro }
11814    { IBM01148 CCSID01148 CP01148 ebcdic-international-500+euro }
11815    { IBM01149 CCSID01149 CP01149 ebcdic-is-871+euro }
11816    { IBM1047 IBM-1047 }
11817    { PTCP154 csPTCP154 PT154 CP154 Cyrillic-Asian }
11818    { Amiga-1251 Ami1251 Amiga1251 Ami-1251 }
11819    { UNICODE-1-1 csUnicode11 }
11820    { CESU-8 csCESU-8 }
11821    { BOCU-1 csBOCU-1 }
11822    { UNICODE-1-1-UTF-7 csUnicode11UTF7 }
11823    { ISO-8859-14 iso-ir-199 ISO_8859-14:1998 ISO_8859-14 latin8 iso-celtic
11824      l8 }
11825    { ISO-8859-15 ISO_8859-15 Latin-9 }
11826    { ISO-8859-16 iso-ir-226 ISO_8859-16:2001 ISO_8859-16 latin10 l10 }
11827    { GBK CP936 MS936 windows-936 }
11828    { JIS_Encoding csJISEncoding }
11829    { Shift_JIS MS_Kanji csShiftJIS ShiftJIS Shift-JIS }
11830    { Extended_UNIX_Code_Packed_Format_for_Japanese csEUCPkdFmtJapanese
11831      EUC-JP }
11832    { Extended_UNIX_Code_Fixed_Width_for_Japanese csEUCFixWidJapanese }
11833    { ISO-10646-UCS-Basic csUnicodeASCII }
11834    { ISO-10646-Unicode-Latin1 csUnicodeLatin1 ISO-10646 }
11835    { ISO-Unicode-IBM-1261 csUnicodeIBM1261 }
11836    { ISO-Unicode-IBM-1268 csUnicodeIBM1268 }
11837    { ISO-Unicode-IBM-1276 csUnicodeIBM1276 }
11838    { ISO-Unicode-IBM-1264 csUnicodeIBM1264 }
11839    { ISO-Unicode-IBM-1265 csUnicodeIBM1265 }
11840    { ISO-8859-1-Windows-3.0-Latin-1 csWindows30Latin1 }
11841    { ISO-8859-1-Windows-3.1-Latin-1 csWindows31Latin1 }
11842    { ISO-8859-2-Windows-Latin-2 csWindows31Latin2 }
11843    { ISO-8859-9-Windows-Latin-5 csWindows31Latin5 }
11844    { Adobe-Standard-Encoding csAdobeStandardEncoding }
11845    { Ventura-US csVenturaUS }
11846    { Ventura-International csVenturaInternational }
11847    { PC8-Danish-Norwegian csPC8DanishNorwegian }
11848    { PC8-Turkish csPC8Turkish }
11849    { IBM-Symbols csIBMSymbols }
11850    { IBM-Thai csIBMThai }
11851    { HP-Legal csHPLegal }
11852    { HP-Pi-font csHPPiFont }
11853    { HP-Math8 csHPMath8 }
11854    { Adobe-Symbol-Encoding csHPPSMath }
11855    { HP-DeskTop csHPDesktop }
11856    { Ventura-Math csVenturaMath }
11857    { Microsoft-Publishing csMicrosoftPublishing }
11858    { Windows-31J csWindows31J }
11859    { GB2312 csGB2312 }
11860    { Big5 csBig5 }
11861}
11862
11863proc tcl_encoding {enc} {
11864    global encoding_aliases tcl_encoding_cache
11865    if {[info exists tcl_encoding_cache($enc)]} {
11866        return $tcl_encoding_cache($enc)
11867    }
11868    set names [encoding names]
11869    set lcnames [string tolower $names]
11870    set enc [string tolower $enc]
11871    set i [lsearch -exact $lcnames $enc]
11872    if {$i < 0} {
11873        # look for "isonnn" instead of "iso-nnn" or "iso_nnn"
11874        if {[regsub {^(iso|cp|ibm|jis)[-_]} $enc {\1} encx]} {
11875            set i [lsearch -exact $lcnames $encx]
11876        }
11877    }
11878    if {$i < 0} {
11879        foreach l $encoding_aliases {
11880            set ll [string tolower $l]
11881            if {[lsearch -exact $ll $enc] < 0} continue
11882            # look through the aliases for one that tcl knows about
11883            foreach e $ll {
11884                set i [lsearch -exact $lcnames $e]
11885                if {$i < 0} {
11886                    if {[regsub {^(iso|cp|ibm|jis)[-_]} $e {\1} ex]} {
11887                        set i [lsearch -exact $lcnames $ex]
11888                    }
11889                }
11890                if {$i >= 0} break
11891            }
11892            break
11893        }
11894    }
11895    set tclenc {}
11896    if {$i >= 0} {
11897        set tclenc [lindex $names $i]
11898    }
11899    set tcl_encoding_cache($enc) $tclenc
11900    return $tclenc
11901}
11902
11903proc gitattr {path attr default} {
11904    global path_attr_cache
11905    if {[info exists path_attr_cache($attr,$path)]} {
11906        set r $path_attr_cache($attr,$path)
11907    } else {
11908        set r "unspecified"
11909        if {![catch {set line [exec git check-attr $attr -- $path]}]} {
11910            regexp "(.*): $attr: (.*)" $line m f r
11911        }
11912        set path_attr_cache($attr,$path) $r
11913    }
11914    if {$r eq "unspecified"} {
11915        return $default
11916    }
11917    return $r
11918}
11919
11920proc cache_gitattr {attr pathlist} {
11921    global path_attr_cache
11922    set newlist {}
11923    foreach path $pathlist {
11924        if {![info exists path_attr_cache($attr,$path)]} {
11925            lappend newlist $path
11926        }
11927    }
11928    set lim 1000
11929    if {[tk windowingsystem] == "win32"} {
11930        # windows has a 32k limit on the arguments to a command...
11931        set lim 30
11932    }
11933    while {$newlist ne {}} {
11934        set head [lrange $newlist 0 [expr {$lim - 1}]]
11935        set newlist [lrange $newlist $lim end]
11936        if {![catch {set rlist [eval exec git check-attr $attr -- $head]}]} {
11937            foreach row [split $rlist "\n"] {
11938                if {[regexp "(.*): $attr: (.*)" $row m path value]} {
11939                    if {[string index $path 0] eq "\""} {
11940                        set path [encoding convertfrom [lindex $path 0]]
11941                    }
11942                    set path_attr_cache($attr,$path) $value
11943                }
11944            }
11945        }
11946    }
11947}
11948
11949proc get_path_encoding {path} {
11950    global gui_encoding perfile_attrs
11951    set tcl_enc $gui_encoding
11952    if {$path ne {} && $perfile_attrs} {
11953        set enc2 [tcl_encoding [gitattr $path encoding $tcl_enc]]
11954        if {$enc2 ne {}} {
11955            set tcl_enc $enc2
11956        }
11957    }
11958    return $tcl_enc
11959}
11960
11961# First check that Tcl/Tk is recent enough
11962if {[catch {package require Tk 8.4} err]} {
11963    show_error {} . "Sorry, gitk cannot run with this version of Tcl/Tk.\n\
11964                     Gitk requires at least Tcl/Tk 8.4." list
11965    exit 1
11966}
11967
11968# on OSX bring the current Wish process window to front
11969if {[tk windowingsystem] eq "aqua"} {
11970    exec osascript -e [format {
11971        tell application "System Events"
11972            set frontmost of processes whose unix id is %d to true
11973        end tell
11974    } [pid] ]
11975}
11976
11977# Unset GIT_TRACE var if set
11978if { [info exists ::env(GIT_TRACE)] } {
11979    unset ::env(GIT_TRACE)
11980}
11981
11982# defaults...
11983set wrcomcmd "git diff-tree --stdin -p --pretty"
11984
11985set gitencoding {}
11986catch {
11987    set gitencoding [exec git config --get i18n.commitencoding]
11988}
11989catch {
11990    set gitencoding [exec git config --get i18n.logoutputencoding]
11991}
11992if {$gitencoding == ""} {
11993    set gitencoding "utf-8"
11994}
11995set tclencoding [tcl_encoding $gitencoding]
11996if {$tclencoding == {}} {
11997    puts stderr "Warning: encoding $gitencoding is not supported by Tcl/Tk"
11998}
11999
12000set gui_encoding [encoding system]
12001catch {
12002    set enc [exec git config --get gui.encoding]
12003    if {$enc ne {}} {
12004        set tclenc [tcl_encoding $enc]
12005        if {$tclenc ne {}} {
12006            set gui_encoding $tclenc
12007        } else {
12008            puts stderr "Warning: encoding $enc is not supported by Tcl/Tk"
12009        }
12010    }
12011}
12012
12013set log_showroot true
12014catch {
12015    set log_showroot [exec git config --bool --get log.showroot]
12016}
12017
12018if {[tk windowingsystem] eq "aqua"} {
12019    set mainfont {{Lucida Grande} 9}
12020    set textfont {Monaco 9}
12021    set uifont {{Lucida Grande} 9 bold}
12022} elseif {![catch {::tk::pkgconfig get fontsystem} xft] && $xft eq "xft"} {
12023    # fontconfig!
12024    set mainfont {sans 9}
12025    set textfont {monospace 9}
12026    set uifont {sans 9 bold}
12027} else {
12028    set mainfont {Helvetica 9}
12029    set textfont {Courier 9}
12030    set uifont {Helvetica 9 bold}
12031}
12032set tabstop 8
12033set findmergefiles 0
12034set maxgraphpct 50
12035set maxwidth 16
12036set revlistorder 0
12037set fastdate 0
12038set uparrowlen 5
12039set downarrowlen 5
12040set mingaplen 100
12041set cmitmode "patch"
12042set wrapcomment "none"
12043set showneartags 1
12044set hideremotes 0
12045set maxrefs 20
12046set maxlinelen 200
12047set showlocalchanges 1
12048set limitdiffs 1
12049set datetimeformat "%Y-%m-%d %H:%M:%S"
12050set autoselect 1
12051set autosellen 40
12052set perfile_attrs 0
12053set want_ttk 1
12054
12055if {[tk windowingsystem] eq "aqua"} {
12056    set extdifftool "opendiff"
12057} else {
12058    set extdifftool "meld"
12059}
12060
12061set colors {green red blue magenta darkgrey brown orange}
12062if {[tk windowingsystem] eq "win32"} {
12063    set uicolor SystemButtonFace
12064    set uifgcolor SystemButtonText
12065    set uifgdisabledcolor SystemDisabledText
12066    set bgcolor SystemWindow
12067    set fgcolor SystemWindowText
12068    set selectbgcolor SystemHighlight
12069} else {
12070    set uicolor grey85
12071    set uifgcolor black
12072    set uifgdisabledcolor "#999"
12073    set bgcolor white
12074    set fgcolor black
12075    set selectbgcolor gray85
12076}
12077set diffcolors {red "#00a000" blue}
12078set diffcontext 3
12079set mergecolors {red blue green purple brown "#009090" magenta "#808000" "#009000" "#ff0080" cyan "#b07070" "#70b0f0" "#70f0b0" "#f0b070" "#ff70b0"}
12080set ignorespace 0
12081set worddiff ""
12082set markbgcolor "#e0e0ff"
12083
12084set headbgcolor green
12085set headfgcolor black
12086set headoutlinecolor black
12087set remotebgcolor #ffddaa
12088set tagbgcolor yellow
12089set tagfgcolor black
12090set tagoutlinecolor black
12091set reflinecolor black
12092set filesepbgcolor #aaaaaa
12093set filesepfgcolor black
12094set linehoverbgcolor #ffff80
12095set linehoverfgcolor black
12096set linehoveroutlinecolor black
12097set mainheadcirclecolor yellow
12098set workingfilescirclecolor red
12099set indexcirclecolor green
12100set circlecolors {white blue gray blue blue}
12101set linkfgcolor blue
12102set circleoutlinecolor $fgcolor
12103set foundbgcolor yellow
12104set currentsearchhitbgcolor orange
12105
12106# button for popping up context menus
12107if {[tk windowingsystem] eq "aqua"} {
12108    set ctxbut <Button-2>
12109} else {
12110    set ctxbut <Button-3>
12111}
12112
12113## For msgcat loading, first locate the installation location.
12114if { [info exists ::env(GITK_MSGSDIR)] } {
12115    ## Msgsdir was manually set in the environment.
12116    set gitk_msgsdir $::env(GITK_MSGSDIR)
12117} else {
12118    ## Let's guess the prefix from argv0.
12119    set gitk_prefix [file dirname [file dirname [file normalize $argv0]]]
12120    set gitk_libdir [file join $gitk_prefix share gitk lib]
12121    set gitk_msgsdir [file join $gitk_libdir msgs]
12122    unset gitk_prefix
12123}
12124
12125## Internationalization (i18n) through msgcat and gettext. See
12126## http://www.gnu.org/software/gettext/manual/html_node/Tcl.html
12127package require msgcat
12128namespace import ::msgcat::mc
12129## And eventually load the actual message catalog
12130::msgcat::mcload $gitk_msgsdir
12131
12132catch {
12133    # follow the XDG base directory specification by default. See
12134    # http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
12135    if {[info exists env(XDG_CONFIG_HOME)] && $env(XDG_CONFIG_HOME) ne ""} {
12136        # XDG_CONFIG_HOME environment variable is set
12137        set config_file [file join $env(XDG_CONFIG_HOME) git gitk]
12138        set config_file_tmp [file join $env(XDG_CONFIG_HOME) git gitk-tmp]
12139    } else {
12140        # default XDG_CONFIG_HOME
12141        set config_file "~/.config/git/gitk"
12142        set config_file_tmp "~/.config/git/gitk-tmp"
12143    }
12144    if {![file exists $config_file]} {
12145        # for backward compatibility use the old config file if it exists
12146        if {[file exists "~/.gitk"]} {
12147            set config_file "~/.gitk"
12148            set config_file_tmp "~/.gitk-tmp"
12149        } elseif {![file exists [file dirname $config_file]]} {
12150            file mkdir [file dirname $config_file]
12151        }
12152    }
12153    source $config_file
12154}
12155
12156parsefont mainfont $mainfont
12157eval font create mainfont [fontflags mainfont]
12158eval font create mainfontbold [fontflags mainfont 1]
12159
12160parsefont textfont $textfont
12161eval font create textfont [fontflags textfont]
12162eval font create textfontbold [fontflags textfont 1]
12163
12164parsefont uifont $uifont
12165eval font create uifont [fontflags uifont]
12166
12167setui $uicolor
12168
12169setoptions
12170
12171# check that we can find a .git directory somewhere...
12172if {[catch {set gitdir [exec git rev-parse --git-dir]}]} {
12173    show_error {} . [mc "Cannot find a git repository here."]
12174    exit 1
12175}
12176
12177set selecthead {}
12178set selectheadid {}
12179
12180set revtreeargs {}
12181set cmdline_files {}
12182set i 0
12183set revtreeargscmd {}
12184foreach arg $argv {
12185    switch -glob -- $arg {
12186        "" { }
12187        "--" {
12188            set cmdline_files [lrange $argv [expr {$i + 1}] end]
12189            break
12190        }
12191        "--select-commit=*" {
12192            set selecthead [string range $arg 16 end]
12193        }
12194        "--argscmd=*" {
12195            set revtreeargscmd [string range $arg 10 end]
12196        }
12197        default {
12198            lappend revtreeargs $arg
12199        }
12200    }
12201    incr i
12202}
12203
12204if {$selecthead eq "HEAD"} {
12205    set selecthead {}
12206}
12207
12208if {$i >= [llength $argv] && $revtreeargs ne {}} {
12209    # no -- on command line, but some arguments (other than --argscmd)
12210    if {[catch {
12211        set f [eval exec git rev-parse --no-revs --no-flags $revtreeargs]
12212        set cmdline_files [split $f "\n"]
12213        set n [llength $cmdline_files]
12214        set revtreeargs [lrange $revtreeargs 0 end-$n]
12215        # Unfortunately git rev-parse doesn't produce an error when
12216        # something is both a revision and a filename.  To be consistent
12217        # with git log and git rev-list, check revtreeargs for filenames.
12218        foreach arg $revtreeargs {
12219            if {[file exists $arg]} {
12220                show_error {} . [mc "Ambiguous argument '%s': both revision\
12221                                 and filename" $arg]
12222                exit 1
12223            }
12224        }
12225    } err]} {
12226        # unfortunately we get both stdout and stderr in $err,
12227        # so look for "fatal:".
12228        set i [string first "fatal:" $err]
12229        if {$i > 0} {
12230            set err [string range $err [expr {$i + 6}] end]
12231        }
12232        show_error {} . "[mc "Bad arguments to gitk:"]\n$err"
12233        exit 1
12234    }
12235}
12236
12237set nullid "0000000000000000000000000000000000000000"
12238set nullid2 "0000000000000000000000000000000000000001"
12239set nullfile "/dev/null"
12240
12241set have_tk85 [expr {[package vcompare $tk_version "8.5"] >= 0}]
12242if {![info exists have_ttk]} {
12243    set have_ttk [llength [info commands ::ttk::style]]
12244}
12245set use_ttk [expr {$have_ttk && $want_ttk}]
12246set NS [expr {$use_ttk ? "ttk" : ""}]
12247
12248regexp {^git version ([\d.]*\d)} [exec git version] _ git_version
12249
12250set show_notes {}
12251if {[package vcompare $git_version "1.6.6.2"] >= 0} {
12252    set show_notes "--show-notes"
12253}
12254
12255set appname "gitk"
12256
12257set runq {}
12258set history {}
12259set historyindex 0
12260set fh_serial 0
12261set nhl_names {}
12262set highlight_paths {}
12263set findpattern {}
12264set searchdirn -forwards
12265set boldids {}
12266set boldnameids {}
12267set diffelide {0 0}
12268set markingmatches 0
12269set linkentercount 0
12270set need_redisplay 0
12271set nrows_drawn 0
12272set firsttabstop 0
12273
12274set nextviewnum 1
12275set curview 0
12276set selectedview 0
12277set selectedhlview [mc "None"]
12278set highlight_related [mc "None"]
12279set highlight_files {}
12280set viewfiles(0) {}
12281set viewperm(0) 0
12282set viewargs(0) {}
12283set viewargscmd(0) {}
12284
12285set selectedline {}
12286set numcommits 0
12287set loginstance 0
12288set cmdlineok 0
12289set stopped 0
12290set stuffsaved 0
12291set patchnum 0
12292set lserial 0
12293set hasworktree [hasworktree]
12294set cdup {}
12295if {[expr {[exec git rev-parse --is-inside-work-tree] == "true"}]} {
12296    set cdup [exec git rev-parse --show-cdup]
12297}
12298set worktree [exec git rev-parse --show-toplevel]
12299setcoords
12300makewindow
12301catch {
12302    image create photo gitlogo      -width 16 -height 16
12303
12304    image create photo gitlogominus -width  4 -height  2
12305    gitlogominus put #C00000 -to 0 0 4 2
12306    gitlogo copy gitlogominus -to  1 5
12307    gitlogo copy gitlogominus -to  6 5
12308    gitlogo copy gitlogominus -to 11 5
12309    image delete gitlogominus
12310
12311    image create photo gitlogoplus  -width  4 -height  4
12312    gitlogoplus  put #008000 -to 1 0 3 4
12313    gitlogoplus  put #008000 -to 0 1 4 3
12314    gitlogo copy gitlogoplus  -to  1 9
12315    gitlogo copy gitlogoplus  -to  6 9
12316    gitlogo copy gitlogoplus  -to 11 9
12317    image delete gitlogoplus
12318
12319    image create photo gitlogo32    -width 32 -height 32
12320    gitlogo32 copy gitlogo -zoom 2 2
12321
12322    wm iconphoto . -default gitlogo gitlogo32
12323}
12324# wait for the window to become visible
12325tkwait visibility .
12326wm title . "$appname: [reponame]"
12327update
12328readrefs
12329
12330if {$cmdline_files ne {} || $revtreeargs ne {} || $revtreeargscmd ne {}} {
12331    # create a view for the files/dirs specified on the command line
12332    set curview 1
12333    set selectedview 1
12334    set nextviewnum 2
12335    set viewname(1) [mc "Command line"]
12336    set viewfiles(1) $cmdline_files
12337    set viewargs(1) $revtreeargs
12338    set viewargscmd(1) $revtreeargscmd
12339    set viewperm(1) 0
12340    set vdatemode(1) 0
12341    addviewmenu 1
12342    .bar.view entryconf [mca "Edit view..."] -state normal
12343    .bar.view entryconf [mca "Delete view"] -state normal
12344}
12345
12346if {[info exists permviews]} {
12347    foreach v $permviews {
12348        set n $nextviewnum
12349        incr nextviewnum
12350        set viewname($n) [lindex $v 0]
12351        set viewfiles($n) [lindex $v 1]
12352        set viewargs($n) [lindex $v 2]
12353        set viewargscmd($n) [lindex $v 3]
12354        set viewperm($n) 1
12355        addviewmenu $n
12356    }
12357}
12358
12359if {[tk windowingsystem] eq "win32"} {
12360    focus -force .
12361}
12362
12363getcommits {}
12364
12365# Local variables:
12366# mode: tcl
12367# indent-tabs-mode: t
12368# tab-width: 8
12369# End: