a4a8bd30ae17e5f5de77d5ed044822f0bccf2eaa
   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
3497
3498    if {![info exists gitktmpdir]} {
3499        set gitktmpdir [file join $gitdir [format ".gitk-tmp.%s" [pid]]]
3500        if {[catch {file mkdir $gitktmpdir} err]} {
3501            error_popup "[mc "Error creating temporary directory %s:" $gitktmpdir] $err"
3502            unset gitktmpdir
3503            return {}
3504        }
3505        set diffnum 0
3506    }
3507    incr diffnum
3508    set diffdir [file join $gitktmpdir $diffnum]
3509    if {[catch {file mkdir $diffdir} err]} {
3510        error_popup "[mc "Error creating temporary directory %s:" $diffdir] $err"
3511        return {}
3512    }
3513    return $diffdir
3514}
3515
3516proc save_file_from_commit {filename output what} {
3517    global nullfile
3518
3519    if {[catch {exec git show $filename -- > $output} err]} {
3520        if {[string match "fatal: bad revision *" $err]} {
3521            return $nullfile
3522        }
3523        error_popup "[mc "Error getting \"%s\" from %s:" $filename $what] $err"
3524        return {}
3525    }
3526    return $output
3527}
3528
3529proc external_diff_get_one_file {diffid filename diffdir} {
3530    global nullid nullid2 nullfile
3531    global worktree
3532
3533    if {$diffid == $nullid} {
3534        set difffile [file join $worktree $filename]
3535        if {[file exists $difffile]} {
3536            return $difffile
3537        }
3538        return $nullfile
3539    }
3540    if {$diffid == $nullid2} {
3541        set difffile [file join $diffdir "\[index\] [file tail $filename]"]
3542        return [save_file_from_commit :$filename $difffile index]
3543    }
3544    set difffile [file join $diffdir "\[$diffid\] [file tail $filename]"]
3545    return [save_file_from_commit $diffid:$filename $difffile \
3546               "revision $diffid"]
3547}
3548
3549proc external_diff {} {
3550    global nullid nullid2
3551    global flist_menu_file
3552    global diffids
3553    global extdifftool
3554
3555    if {[llength $diffids] == 1} {
3556        # no reference commit given
3557        set diffidto [lindex $diffids 0]
3558        if {$diffidto eq $nullid} {
3559            # diffing working copy with index
3560            set diffidfrom $nullid2
3561        } elseif {$diffidto eq $nullid2} {
3562            # diffing index with HEAD
3563            set diffidfrom "HEAD"
3564        } else {
3565            # use first parent commit
3566            global parentlist selectedline
3567            set diffidfrom [lindex $parentlist $selectedline 0]
3568        }
3569    } else {
3570        set diffidfrom [lindex $diffids 0]
3571        set diffidto [lindex $diffids 1]
3572    }
3573
3574    # make sure that several diffs wont collide
3575    set diffdir [gitknewtmpdir]
3576    if {$diffdir eq {}} return
3577
3578    # gather files to diff
3579    set difffromfile [external_diff_get_one_file $diffidfrom $flist_menu_file $diffdir]
3580    set difftofile [external_diff_get_one_file $diffidto $flist_menu_file $diffdir]
3581
3582    if {$difffromfile ne {} && $difftofile ne {}} {
3583        set cmd [list [shellsplit $extdifftool] $difffromfile $difftofile]
3584        if {[catch {set fl [open |$cmd r]} err]} {
3585            file delete -force $diffdir
3586            error_popup "$extdifftool: [mc "command failed:"] $err"
3587        } else {
3588            fconfigure $fl -blocking 0
3589            filerun $fl [list delete_at_eof $fl $diffdir]
3590        }
3591    }
3592}
3593
3594proc find_hunk_blamespec {base line} {
3595    global ctext
3596
3597    # Find and parse the hunk header
3598    set s_lix [$ctext search -backwards -regexp ^@@ "$line.0 lineend" $base.0]
3599    if {$s_lix eq {}} return
3600
3601    set s_line [$ctext get $s_lix "$s_lix + 1 lines"]
3602    if {![regexp {^@@@*(( -\d+(,\d+)?)+) \+(\d+)(,\d+)? @@} $s_line \
3603            s_line old_specs osz osz1 new_line nsz]} {
3604        return
3605    }
3606
3607    # base lines for the parents
3608    set base_lines [list $new_line]
3609    foreach old_spec [lrange [split $old_specs " "] 1 end] {
3610        if {![regexp -- {-(\d+)(,\d+)?} $old_spec \
3611                old_spec old_line osz]} {
3612            return
3613        }
3614        lappend base_lines $old_line
3615    }
3616
3617    # Now scan the lines to determine offset within the hunk
3618    set max_parent [expr {[llength $base_lines]-2}]
3619    set dline 0
3620    set s_lno [lindex [split $s_lix "."] 0]
3621
3622    # Determine if the line is removed
3623    set chunk [$ctext get $line.0 "$line.1 + $max_parent chars"]
3624    if {[string match {[-+ ]*} $chunk]} {
3625        set removed_idx [string first "-" $chunk]
3626        # Choose a parent index
3627        if {$removed_idx >= 0} {
3628            set parent $removed_idx
3629        } else {
3630            set unchanged_idx [string first " " $chunk]
3631            if {$unchanged_idx >= 0} {
3632                set parent $unchanged_idx
3633            } else {
3634                # blame the current commit
3635                set parent -1
3636            }
3637        }
3638        # then count other lines that belong to it
3639        for {set i $line} {[incr i -1] > $s_lno} {} {
3640            set chunk [$ctext get $i.0 "$i.1 + $max_parent chars"]
3641            # Determine if the line is removed
3642            set removed_idx [string first "-" $chunk]
3643            if {$parent >= 0} {
3644                set code [string index $chunk $parent]
3645                if {$code eq "-" || ($removed_idx < 0 && $code ne "+")} {
3646                    incr dline
3647                }
3648            } else {
3649                if {$removed_idx < 0} {
3650                    incr dline
3651                }
3652            }
3653        }
3654        incr parent
3655    } else {
3656        set parent 0
3657    }
3658
3659    incr dline [lindex $base_lines $parent]
3660    return [list $parent $dline]
3661}
3662
3663proc external_blame_diff {} {
3664    global currentid cmitmode
3665    global diff_menu_txtpos diff_menu_line
3666    global diff_menu_filebase flist_menu_file
3667
3668    if {$cmitmode eq "tree"} {
3669        set parent_idx 0
3670        set line [expr {$diff_menu_line - $diff_menu_filebase}]
3671    } else {
3672        set hinfo [find_hunk_blamespec $diff_menu_filebase $diff_menu_line]
3673        if {$hinfo ne {}} {
3674            set parent_idx [lindex $hinfo 0]
3675            set line [lindex $hinfo 1]
3676        } else {
3677            set parent_idx 0
3678            set line 0
3679        }
3680    }
3681
3682    external_blame $parent_idx $line
3683}
3684
3685# Find the SHA1 ID of the blob for file $fname in the index
3686# at stage 0 or 2
3687proc index_sha1 {fname} {
3688    set f [open [list | git ls-files -s $fname] r]
3689    while {[gets $f line] >= 0} {
3690        set info [lindex [split $line "\t"] 0]
3691        set stage [lindex $info 2]
3692        if {$stage eq "0" || $stage eq "2"} {
3693            close $f
3694            return [lindex $info 1]
3695        }
3696    }
3697    close $f
3698    return {}
3699}
3700
3701# Turn an absolute path into one relative to the current directory
3702proc make_relative {f} {
3703    if {[file pathtype $f] eq "relative"} {
3704        return $f
3705    }
3706    set elts [file split $f]
3707    set here [file split [pwd]]
3708    set ei 0
3709    set hi 0
3710    set res {}
3711    foreach d $here {
3712        if {$ei < $hi || $ei >= [llength $elts] || [lindex $elts $ei] ne $d} {
3713            lappend res ".."
3714        } else {
3715            incr ei
3716        }
3717        incr hi
3718    }
3719    set elts [concat $res [lrange $elts $ei end]]
3720    return [eval file join $elts]
3721}
3722
3723proc external_blame {parent_idx {line {}}} {
3724    global flist_menu_file cdup
3725    global nullid nullid2
3726    global parentlist selectedline currentid
3727
3728    if {$parent_idx > 0} {
3729        set base_commit [lindex $parentlist $selectedline [expr {$parent_idx-1}]]
3730    } else {
3731        set base_commit $currentid
3732    }
3733
3734    if {$base_commit eq {} || $base_commit eq $nullid || $base_commit eq $nullid2} {
3735        error_popup [mc "No such commit"]
3736        return
3737    }
3738
3739    set cmdline [list git gui blame]
3740    if {$line ne {} && $line > 1} {
3741        lappend cmdline "--line=$line"
3742    }
3743    set f [file join $cdup $flist_menu_file]
3744    # Unfortunately it seems git gui blame doesn't like
3745    # being given an absolute path...
3746    set f [make_relative $f]
3747    lappend cmdline $base_commit $f
3748    if {[catch {eval exec $cmdline &} err]} {
3749        error_popup "[mc "git gui blame: command failed:"] $err"
3750    }
3751}
3752
3753proc show_line_source {} {
3754    global cmitmode currentid parents curview blamestuff blameinst
3755    global diff_menu_line diff_menu_filebase flist_menu_file
3756    global nullid nullid2 gitdir cdup
3757
3758    set from_index {}
3759    if {$cmitmode eq "tree"} {
3760        set id $currentid
3761        set line [expr {$diff_menu_line - $diff_menu_filebase}]
3762    } else {
3763        set h [find_hunk_blamespec $diff_menu_filebase $diff_menu_line]
3764        if {$h eq {}} return
3765        set pi [lindex $h 0]
3766        if {$pi == 0} {
3767            mark_ctext_line $diff_menu_line
3768            return
3769        }
3770        incr pi -1
3771        if {$currentid eq $nullid} {
3772            if {$pi > 0} {
3773                # must be a merge in progress...
3774                if {[catch {
3775                    # get the last line from .git/MERGE_HEAD
3776                    set f [open [file join $gitdir MERGE_HEAD] r]
3777                    set id [lindex [split [read $f] "\n"] end-1]
3778                    close $f
3779                } err]} {
3780                    error_popup [mc "Couldn't read merge head: %s" $err]
3781                    return
3782                }
3783            } elseif {$parents($curview,$currentid) eq $nullid2} {
3784                # need to do the blame from the index
3785                if {[catch {
3786                    set from_index [index_sha1 $flist_menu_file]
3787                } err]} {
3788                    error_popup [mc "Error reading index: %s" $err]
3789                    return
3790                }
3791            } else {
3792                set id $parents($curview,$currentid)
3793            }
3794        } else {
3795            set id [lindex $parents($curview,$currentid) $pi]
3796        }
3797        set line [lindex $h 1]
3798    }
3799    set blameargs {}
3800    if {$from_index ne {}} {
3801        lappend blameargs | git cat-file blob $from_index
3802    }
3803    lappend blameargs | git blame -p -L$line,+1
3804    if {$from_index ne {}} {
3805        lappend blameargs --contents -
3806    } else {
3807        lappend blameargs $id
3808    }
3809    lappend blameargs -- [file join $cdup $flist_menu_file]
3810    if {[catch {
3811        set f [open $blameargs r]
3812    } err]} {
3813        error_popup [mc "Couldn't start git blame: %s" $err]
3814        return
3815    }
3816    nowbusy blaming [mc "Searching"]
3817    fconfigure $f -blocking 0
3818    set i [reg_instance $f]
3819    set blamestuff($i) {}
3820    set blameinst $i
3821    filerun $f [list read_line_source $f $i]
3822}
3823
3824proc stopblaming {} {
3825    global blameinst
3826
3827    if {[info exists blameinst]} {
3828        stop_instance $blameinst
3829        unset blameinst
3830        notbusy blaming
3831    }
3832}
3833
3834proc read_line_source {fd inst} {
3835    global blamestuff curview commfd blameinst nullid nullid2
3836
3837    while {[gets $fd line] >= 0} {
3838        lappend blamestuff($inst) $line
3839    }
3840    if {![eof $fd]} {
3841        return 1
3842    }
3843    unset commfd($inst)
3844    unset blameinst
3845    notbusy blaming
3846    fconfigure $fd -blocking 1
3847    if {[catch {close $fd} err]} {
3848        error_popup [mc "Error running git blame: %s" $err]
3849        return 0
3850    }
3851
3852    set fname {}
3853    set line [split [lindex $blamestuff($inst) 0] " "]
3854    set id [lindex $line 0]
3855    set lnum [lindex $line 1]
3856    if {[string length $id] == 40 && [string is xdigit $id] &&
3857        [string is digit -strict $lnum]} {
3858        # look for "filename" line
3859        foreach l $blamestuff($inst) {
3860            if {[string match "filename *" $l]} {
3861                set fname [string range $l 9 end]
3862                break
3863            }
3864        }
3865    }
3866    if {$fname ne {}} {
3867        # all looks good, select it
3868        if {$id eq $nullid} {
3869            # blame uses all-zeroes to mean not committed,
3870            # which would mean a change in the index
3871            set id $nullid2
3872        }
3873        if {[commitinview $id $curview]} {
3874            selectline [rowofcommit $id] 1 [list $fname $lnum] 1
3875        } else {
3876            error_popup [mc "That line comes from commit %s, \
3877                             which is not in this view" [shortids $id]]
3878        }
3879    } else {
3880        puts "oops couldn't parse git blame output"
3881    }
3882    return 0
3883}
3884
3885# delete $dir when we see eof on $f (presumably because the child has exited)
3886proc delete_at_eof {f dir} {
3887    while {[gets $f line] >= 0} {}
3888    if {[eof $f]} {
3889        if {[catch {close $f} err]} {
3890            error_popup "[mc "External diff viewer failed:"] $err"
3891        }
3892        file delete -force $dir
3893        return 0
3894    }
3895    return 1
3896}
3897
3898# Functions for adding and removing shell-type quoting
3899
3900proc shellquote {str} {
3901    if {![string match "*\['\"\\ \t]*" $str]} {
3902        return $str
3903    }
3904    if {![string match "*\['\"\\]*" $str]} {
3905        return "\"$str\""
3906    }
3907    if {![string match "*'*" $str]} {
3908        return "'$str'"
3909    }
3910    return "\"[string map {\" \\\" \\ \\\\} $str]\""
3911}
3912
3913proc shellarglist {l} {
3914    set str {}
3915    foreach a $l {
3916        if {$str ne {}} {
3917            append str " "
3918        }
3919        append str [shellquote $a]
3920    }
3921    return $str
3922}
3923
3924proc shelldequote {str} {
3925    set ret {}
3926    set used -1
3927    while {1} {
3928        incr used
3929        if {![regexp -start $used -indices "\['\"\\\\ \t]" $str first]} {
3930            append ret [string range $str $used end]
3931            set used [string length $str]
3932            break
3933        }
3934        set first [lindex $first 0]
3935        set ch [string index $str $first]
3936        if {$first > $used} {
3937            append ret [string range $str $used [expr {$first - 1}]]
3938            set used $first
3939        }
3940        if {$ch eq " " || $ch eq "\t"} break
3941        incr used
3942        if {$ch eq "'"} {
3943            set first [string first "'" $str $used]
3944            if {$first < 0} {
3945                error "unmatched single-quote"
3946            }
3947            append ret [string range $str $used [expr {$first - 1}]]
3948            set used $first
3949            continue
3950        }
3951        if {$ch eq "\\"} {
3952            if {$used >= [string length $str]} {
3953                error "trailing backslash"
3954            }
3955            append ret [string index $str $used]
3956            continue
3957        }
3958        # here ch == "\""
3959        while {1} {
3960            if {![regexp -start $used -indices "\[\"\\\\]" $str first]} {
3961                error "unmatched double-quote"
3962            }
3963            set first [lindex $first 0]
3964            set ch [string index $str $first]
3965            if {$first > $used} {
3966                append ret [string range $str $used [expr {$first - 1}]]
3967                set used $first
3968            }
3969            if {$ch eq "\""} break
3970            incr used
3971            append ret [string index $str $used]
3972            incr used
3973        }
3974    }
3975    return [list $used $ret]
3976}
3977
3978proc shellsplit {str} {
3979    set l {}
3980    while {1} {
3981        set str [string trimleft $str]
3982        if {$str eq {}} break
3983        set dq [shelldequote $str]
3984        set n [lindex $dq 0]
3985        set word [lindex $dq 1]
3986        set str [string range $str $n end]
3987        lappend l $word
3988    }
3989    return $l
3990}
3991
3992# Code to implement multiple views
3993
3994proc newview {ishighlight} {
3995    global nextviewnum newviewname newishighlight
3996    global revtreeargs viewargscmd newviewopts curview
3997
3998    set newishighlight $ishighlight
3999    set top .gitkview
4000    if {[winfo exists $top]} {
4001        raise $top
4002        return
4003    }
4004    decode_view_opts $nextviewnum $revtreeargs
4005    set newviewname($nextviewnum) "[mc "View"] $nextviewnum"
4006    set newviewopts($nextviewnum,perm) 0
4007    set newviewopts($nextviewnum,cmd)  $viewargscmd($curview)
4008    vieweditor $top $nextviewnum [mc "Gitk view definition"]
4009}
4010
4011set known_view_options {
4012    {perm      b    .  {}               {mc "Remember this view"}}
4013    {reflabel  l    +  {}               {mc "References (space separated list):"}}
4014    {refs      t15  .. {}               {mc "Branches & tags:"}}
4015    {allrefs   b    *. "--all"          {mc "All refs"}}
4016    {branches  b    .  "--branches"     {mc "All (local) branches"}}
4017    {tags      b    .  "--tags"         {mc "All tags"}}
4018    {remotes   b    .  "--remotes"      {mc "All remote-tracking branches"}}
4019    {commitlbl l    +  {}               {mc "Commit Info (regular expressions):"}}
4020    {author    t15  .. "--author=*"     {mc "Author:"}}
4021    {committer t15  .  "--committer=*"  {mc "Committer:"}}
4022    {loginfo   t15  .. "--grep=*"       {mc "Commit Message:"}}
4023    {allmatch  b    .. "--all-match"    {mc "Matches all Commit Info criteria"}}
4024    {changes_l l    +  {}               {mc "Changes to Files:"}}
4025    {pickaxe_s r0   .  {}               {mc "Fixed String"}}
4026    {pickaxe_t r1   .  "--pickaxe-regex"  {mc "Regular Expression"}}
4027    {pickaxe   t15  .. "-S*"            {mc "Search string:"}}
4028    {datelabel l    +  {}               {mc "Commit Dates (\"2 weeks ago\", \"2009-03-17 15:27:38\", \"March 17, 2009 15:27:38\"):"}}
4029    {since     t15  ..  {"--since=*" "--after=*"}  {mc "Since:"}}
4030    {until     t15  .   {"--until=*" "--before=*"} {mc "Until:"}}
4031    {limit_lbl l    +  {}               {mc "Limit and/or skip a number of revisions (positive integer):"}}
4032    {limit     t10  *. "--max-count=*"  {mc "Number to show:"}}
4033    {skip      t10  .  "--skip=*"       {mc "Number to skip:"}}
4034    {misc_lbl  l    +  {}               {mc "Miscellaneous options:"}}
4035    {dorder    b    *. {"--date-order" "-d"}      {mc "Strictly sort by date"}}
4036    {lright    b    .  "--left-right"   {mc "Mark branch sides"}}
4037    {first     b    .  "--first-parent" {mc "Limit to first parent"}}
4038    {smplhst   b    .  "--simplify-by-decoration"   {mc "Simple history"}}
4039    {args      t50  *. {}               {mc "Additional arguments to git log:"}}
4040    {allpaths  path +  {}               {mc "Enter files and directories to include, one per line:"}}
4041    {cmd       t50= +  {}               {mc "Command to generate more commits to include:"}}
4042    }
4043
4044# Convert $newviewopts($n, ...) into args for git log.
4045proc encode_view_opts {n} {
4046    global known_view_options newviewopts
4047
4048    set rargs [list]
4049    foreach opt $known_view_options {
4050        set patterns [lindex $opt 3]
4051        if {$patterns eq {}} continue
4052        set pattern [lindex $patterns 0]
4053
4054        if {[lindex $opt 1] eq "b"} {
4055            set val $newviewopts($n,[lindex $opt 0])
4056            if {$val} {
4057                lappend rargs $pattern
4058            }
4059        } elseif {[regexp {^r(\d+)$} [lindex $opt 1] type value]} {
4060            regexp {^(.*_)} [lindex $opt 0] uselessvar button_id
4061            set val $newviewopts($n,$button_id)
4062            if {$val eq $value} {
4063                lappend rargs $pattern
4064            }
4065        } else {
4066            set val $newviewopts($n,[lindex $opt 0])
4067            set val [string trim $val]
4068            if {$val ne {}} {
4069                set pfix [string range $pattern 0 end-1]
4070                lappend rargs $pfix$val
4071            }
4072        }
4073    }
4074    set rargs [concat $rargs [shellsplit $newviewopts($n,refs)]]
4075    return [concat $rargs [shellsplit $newviewopts($n,args)]]
4076}
4077
4078# Fill $newviewopts($n, ...) based on args for git log.
4079proc decode_view_opts {n view_args} {
4080    global known_view_options newviewopts
4081
4082    foreach opt $known_view_options {
4083        set id [lindex $opt 0]
4084        if {[lindex $opt 1] eq "b"} {
4085            # Checkboxes
4086            set val 0
4087        } elseif {[regexp {^r(\d+)$} [lindex $opt 1]]} {
4088            # Radiobuttons
4089            regexp {^(.*_)} $id uselessvar id
4090            set val 0
4091        } else {
4092            # Text fields
4093            set val {}
4094        }
4095        set newviewopts($n,$id) $val
4096    }
4097    set oargs [list]
4098    set refargs [list]
4099    foreach arg $view_args {
4100        if {[regexp -- {^-([0-9]+)$} $arg arg cnt]
4101            && ![info exists found(limit)]} {
4102            set newviewopts($n,limit) $cnt
4103            set found(limit) 1
4104            continue
4105        }
4106        catch { unset val }
4107        foreach opt $known_view_options {
4108            set id [lindex $opt 0]
4109            if {[info exists found($id)]} continue
4110            foreach pattern [lindex $opt 3] {
4111                if {![string match $pattern $arg]} continue
4112                if {[lindex $opt 1] eq "b"} {
4113                    # Check buttons
4114                    set val 1
4115                } elseif {[regexp {^r(\d+)$} [lindex $opt 1] match num]} {
4116                    # Radio buttons
4117                    regexp {^(.*_)} $id uselessvar id
4118                    set val $num
4119                } else {
4120                    # Text input fields
4121                    set size [string length $pattern]
4122                    set val [string range $arg [expr {$size-1}] end]
4123                }
4124                set newviewopts($n,$id) $val
4125                set found($id) 1
4126                break
4127            }
4128            if {[info exists val]} break
4129        }
4130        if {[info exists val]} continue
4131        if {[regexp {^-} $arg]} {
4132            lappend oargs $arg
4133        } else {
4134            lappend refargs $arg
4135        }
4136    }
4137    set newviewopts($n,refs) [shellarglist $refargs]
4138    set newviewopts($n,args) [shellarglist $oargs]
4139}
4140
4141proc edit_or_newview {} {
4142    global curview
4143
4144    if {$curview > 0} {
4145        editview
4146    } else {
4147        newview 0
4148    }
4149}
4150
4151proc editview {} {
4152    global curview
4153    global viewname viewperm newviewname newviewopts
4154    global viewargs viewargscmd
4155
4156    set top .gitkvedit-$curview
4157    if {[winfo exists $top]} {
4158        raise $top
4159        return
4160    }
4161    decode_view_opts $curview $viewargs($curview)
4162    set newviewname($curview)      $viewname($curview)
4163    set newviewopts($curview,perm) $viewperm($curview)
4164    set newviewopts($curview,cmd)  $viewargscmd($curview)
4165    vieweditor $top $curview "[mc "Gitk: edit view"] $viewname($curview)"
4166}
4167
4168proc vieweditor {top n title} {
4169    global newviewname newviewopts viewfiles bgcolor
4170    global known_view_options NS
4171
4172    ttk_toplevel $top
4173    wm title $top [concat $title [mc "-- criteria for selecting revisions"]]
4174    make_transient $top .
4175
4176    # View name
4177    ${NS}::frame $top.nfr
4178    ${NS}::label $top.nl -text [mc "View Name"]
4179    ${NS}::entry $top.name -width 20 -textvariable newviewname($n)
4180    pack $top.nfr -in $top -fill x -pady 5 -padx 3
4181    pack $top.nl -in $top.nfr -side left -padx {0 5}
4182    pack $top.name -in $top.nfr -side left -padx {0 25}
4183
4184    # View options
4185    set cframe $top.nfr
4186    set cexpand 0
4187    set cnt 0
4188    foreach opt $known_view_options {
4189        set id [lindex $opt 0]
4190        set type [lindex $opt 1]
4191        set flags [lindex $opt 2]
4192        set title [eval [lindex $opt 4]]
4193        set lxpad 0
4194
4195        if {$flags eq "+" || $flags eq "*"} {
4196            set cframe $top.fr$cnt
4197            incr cnt
4198            ${NS}::frame $cframe
4199            pack $cframe -in $top -fill x -pady 3 -padx 3
4200            set cexpand [expr {$flags eq "*"}]
4201        } elseif {$flags eq ".." || $flags eq "*."} {
4202            set cframe $top.fr$cnt
4203            incr cnt
4204            ${NS}::frame $cframe
4205            pack $cframe -in $top -fill x -pady 3 -padx [list 15 3]
4206            set cexpand [expr {$flags eq "*."}]
4207        } else {
4208            set lxpad 5
4209        }
4210
4211        if {$type eq "l"} {
4212            ${NS}::label $cframe.l_$id -text $title
4213            pack $cframe.l_$id -in $cframe -side left -pady [list 3 0] -anchor w
4214        } elseif {$type eq "b"} {
4215            ${NS}::checkbutton $cframe.c_$id -text $title -variable newviewopts($n,$id)
4216            pack $cframe.c_$id -in $cframe -side left \
4217                -padx [list $lxpad 0] -expand $cexpand -anchor w
4218        } elseif {[regexp {^r(\d+)$} $type type sz]} {
4219            regexp {^(.*_)} $id uselessvar button_id
4220            ${NS}::radiobutton $cframe.c_$id -text $title -variable newviewopts($n,$button_id) -value $sz
4221            pack $cframe.c_$id -in $cframe -side left \
4222                -padx [list $lxpad 0] -expand $cexpand -anchor w
4223        } elseif {[regexp {^t(\d+)$} $type type sz]} {
4224            ${NS}::label $cframe.l_$id -text $title
4225            ${NS}::entry $cframe.e_$id -width $sz -background $bgcolor \
4226                -textvariable newviewopts($n,$id)
4227            pack $cframe.l_$id -in $cframe -side left -padx [list $lxpad 0]
4228            pack $cframe.e_$id -in $cframe -side left -expand 1 -fill x
4229        } elseif {[regexp {^t(\d+)=$} $type type sz]} {
4230            ${NS}::label $cframe.l_$id -text $title
4231            ${NS}::entry $cframe.e_$id -width $sz -background $bgcolor \
4232                -textvariable newviewopts($n,$id)
4233            pack $cframe.l_$id -in $cframe -side top -pady [list 3 0] -anchor w
4234            pack $cframe.e_$id -in $cframe -side top -fill x
4235        } elseif {$type eq "path"} {
4236            ${NS}::label $top.l -text $title
4237            pack $top.l -in $top -side top -pady [list 3 0] -anchor w -padx 3
4238            text $top.t -width 40 -height 5 -background $bgcolor
4239            if {[info exists viewfiles($n)]} {
4240                foreach f $viewfiles($n) {
4241                    $top.t insert end $f
4242                    $top.t insert end "\n"
4243                }
4244                $top.t delete {end - 1c} end
4245                $top.t mark set insert 0.0
4246            }
4247            pack $top.t -in $top -side top -pady [list 0 5] -fill both -expand 1 -padx 3
4248        }
4249    }
4250
4251    ${NS}::frame $top.buts
4252    ${NS}::button $top.buts.ok -text [mc "OK"] -command [list newviewok $top $n]
4253    ${NS}::button $top.buts.apply -text [mc "Apply (F5)"] -command [list newviewok $top $n 1]
4254    ${NS}::button $top.buts.can -text [mc "Cancel"] -command [list destroy $top]
4255    bind $top <Control-Return> [list newviewok $top $n]
4256    bind $top <F5> [list newviewok $top $n 1]
4257    bind $top <Escape> [list destroy $top]
4258    grid $top.buts.ok $top.buts.apply $top.buts.can
4259    grid columnconfigure $top.buts 0 -weight 1 -uniform a
4260    grid columnconfigure $top.buts 1 -weight 1 -uniform a
4261    grid columnconfigure $top.buts 2 -weight 1 -uniform a
4262    pack $top.buts -in $top -side top -fill x
4263    focus $top.t
4264}
4265
4266proc doviewmenu {m first cmd op argv} {
4267    set nmenu [$m index end]
4268    for {set i $first} {$i <= $nmenu} {incr i} {
4269        if {[$m entrycget $i -command] eq $cmd} {
4270            eval $m $op $i $argv
4271            break
4272        }
4273    }
4274}
4275
4276proc allviewmenus {n op args} {
4277    # global viewhlmenu
4278
4279    doviewmenu .bar.view 5 [list showview $n] $op $args
4280    # doviewmenu $viewhlmenu 1 [list addvhighlight $n] $op $args
4281}
4282
4283proc newviewok {top n {apply 0}} {
4284    global nextviewnum newviewperm newviewname newishighlight
4285    global viewname viewfiles viewperm selectedview curview
4286    global viewargs viewargscmd newviewopts viewhlmenu
4287
4288    if {[catch {
4289        set newargs [encode_view_opts $n]
4290    } err]} {
4291        error_popup "[mc "Error in commit selection arguments:"] $err" $top
4292        return
4293    }
4294    set files {}
4295    foreach f [split [$top.t get 0.0 end] "\n"] {
4296        set ft [string trim $f]
4297        if {$ft ne {}} {
4298            lappend files $ft
4299        }
4300    }
4301    if {![info exists viewfiles($n)]} {
4302        # creating a new view
4303        incr nextviewnum
4304        set viewname($n) $newviewname($n)
4305        set viewperm($n) $newviewopts($n,perm)
4306        set viewfiles($n) $files
4307        set viewargs($n) $newargs
4308        set viewargscmd($n) $newviewopts($n,cmd)
4309        addviewmenu $n
4310        if {!$newishighlight} {
4311            run showview $n
4312        } else {
4313            run addvhighlight $n
4314        }
4315    } else {
4316        # editing an existing view
4317        set viewperm($n) $newviewopts($n,perm)
4318        if {$newviewname($n) ne $viewname($n)} {
4319            set viewname($n) $newviewname($n)
4320            doviewmenu .bar.view 5 [list showview $n] \
4321                entryconf [list -label $viewname($n)]
4322            # doviewmenu $viewhlmenu 1 [list addvhighlight $n] \
4323                # entryconf [list -label $viewname($n) -value $viewname($n)]
4324        }
4325        if {$files ne $viewfiles($n) || $newargs ne $viewargs($n) || \
4326                $newviewopts($n,cmd) ne $viewargscmd($n)} {
4327            set viewfiles($n) $files
4328            set viewargs($n) $newargs
4329            set viewargscmd($n) $newviewopts($n,cmd)
4330            if {$curview == $n} {
4331                run reloadcommits
4332            }
4333        }
4334    }
4335    if {$apply} return
4336    catch {destroy $top}
4337}
4338
4339proc delview {} {
4340    global curview viewperm hlview selectedhlview
4341
4342    if {$curview == 0} return
4343    if {[info exists hlview] && $hlview == $curview} {
4344        set selectedhlview [mc "None"]
4345        unset hlview
4346    }
4347    allviewmenus $curview delete
4348    set viewperm($curview) 0
4349    showview 0
4350}
4351
4352proc addviewmenu {n} {
4353    global viewname viewhlmenu
4354
4355    .bar.view add radiobutton -label $viewname($n) \
4356        -command [list showview $n] -variable selectedview -value $n
4357    #$viewhlmenu add radiobutton -label $viewname($n) \
4358    #   -command [list addvhighlight $n] -variable selectedhlview
4359}
4360
4361proc showview {n} {
4362    global curview cached_commitrow ordertok
4363    global displayorder parentlist rowidlist rowisopt rowfinal
4364    global colormap rowtextx nextcolor canvxmax
4365    global numcommits viewcomplete
4366    global selectedline currentid canv canvy0
4367    global treediffs
4368    global pending_select mainheadid
4369    global commitidx
4370    global selectedview
4371    global hlview selectedhlview commitinterest
4372
4373    if {$n == $curview} return
4374    set selid {}
4375    set ymax [lindex [$canv cget -scrollregion] 3]
4376    set span [$canv yview]
4377    set ytop [expr {[lindex $span 0] * $ymax}]
4378    set ybot [expr {[lindex $span 1] * $ymax}]
4379    set yscreen [expr {($ybot - $ytop) / 2}]
4380    if {$selectedline ne {}} {
4381        set selid $currentid
4382        set y [yc $selectedline]
4383        if {$ytop < $y && $y < $ybot} {
4384            set yscreen [expr {$y - $ytop}]
4385        }
4386    } elseif {[info exists pending_select]} {
4387        set selid $pending_select
4388        unset pending_select
4389    }
4390    unselectline
4391    normalline
4392    catch {unset treediffs}
4393    clear_display
4394    if {[info exists hlview] && $hlview == $n} {
4395        unset hlview
4396        set selectedhlview [mc "None"]
4397    }
4398    catch {unset commitinterest}
4399    catch {unset cached_commitrow}
4400    catch {unset ordertok}
4401
4402    set curview $n
4403    set selectedview $n
4404    .bar.view entryconf [mca "Edit view..."] -state [expr {$n == 0? "disabled": "normal"}]
4405    .bar.view entryconf [mca "Delete view"] -state [expr {$n == 0? "disabled": "normal"}]
4406
4407    run refill_reflist
4408    if {![info exists viewcomplete($n)]} {
4409        getcommits $selid
4410        return
4411    }
4412
4413    set displayorder {}
4414    set parentlist {}
4415    set rowidlist {}
4416    set rowisopt {}
4417    set rowfinal {}
4418    set numcommits $commitidx($n)
4419
4420    catch {unset colormap}
4421    catch {unset rowtextx}
4422    set nextcolor 0
4423    set canvxmax [$canv cget -width]
4424    set curview $n
4425    set row 0
4426    setcanvscroll
4427    set yf 0
4428    set row {}
4429    if {$selid ne {} && [commitinview $selid $n]} {
4430        set row [rowofcommit $selid]
4431        # try to get the selected row in the same position on the screen
4432        set ymax [lindex [$canv cget -scrollregion] 3]
4433        set ytop [expr {[yc $row] - $yscreen}]
4434        if {$ytop < 0} {
4435            set ytop 0
4436        }
4437        set yf [expr {$ytop * 1.0 / $ymax}]
4438    }
4439    allcanvs yview moveto $yf
4440    drawvisible
4441    if {$row ne {}} {
4442        selectline $row 0
4443    } elseif {!$viewcomplete($n)} {
4444        reset_pending_select $selid
4445    } else {
4446        reset_pending_select {}
4447
4448        if {[commitinview $pending_select $curview]} {
4449            selectline [rowofcommit $pending_select] 1
4450        } else {
4451            set row [first_real_row]
4452            if {$row < $numcommits} {
4453                selectline $row 0
4454            }
4455        }
4456    }
4457    if {!$viewcomplete($n)} {
4458        if {$numcommits == 0} {
4459            show_status [mc "Reading commits..."]
4460        }
4461    } elseif {$numcommits == 0} {
4462        show_status [mc "No commits selected"]
4463    }
4464}
4465
4466# Stuff relating to the highlighting facility
4467
4468proc ishighlighted {id} {
4469    global vhighlights fhighlights nhighlights rhighlights
4470
4471    if {[info exists nhighlights($id)] && $nhighlights($id) > 0} {
4472        return $nhighlights($id)
4473    }
4474    if {[info exists vhighlights($id)] && $vhighlights($id) > 0} {
4475        return $vhighlights($id)
4476    }
4477    if {[info exists fhighlights($id)] && $fhighlights($id) > 0} {
4478        return $fhighlights($id)
4479    }
4480    if {[info exists rhighlights($id)] && $rhighlights($id) > 0} {
4481        return $rhighlights($id)
4482    }
4483    return 0
4484}
4485
4486proc bolden {id font} {
4487    global canv linehtag currentid boldids need_redisplay markedid
4488
4489    # need_redisplay = 1 means the display is stale and about to be redrawn
4490    if {$need_redisplay} return
4491    lappend boldids $id
4492    $canv itemconf $linehtag($id) -font $font
4493    if {[info exists currentid] && $id eq $currentid} {
4494        $canv delete secsel
4495        set t [eval $canv create rect [$canv bbox $linehtag($id)] \
4496                   -outline {{}} -tags secsel \
4497                   -fill [$canv cget -selectbackground]]
4498        $canv lower $t
4499    }
4500    if {[info exists markedid] && $id eq $markedid} {
4501        make_idmark $id
4502    }
4503}
4504
4505proc bolden_name {id font} {
4506    global canv2 linentag currentid boldnameids need_redisplay
4507
4508    if {$need_redisplay} return
4509    lappend boldnameids $id
4510    $canv2 itemconf $linentag($id) -font $font
4511    if {[info exists currentid] && $id eq $currentid} {
4512        $canv2 delete secsel
4513        set t [eval $canv2 create rect [$canv2 bbox $linentag($id)] \
4514                   -outline {{}} -tags secsel \
4515                   -fill [$canv2 cget -selectbackground]]
4516        $canv2 lower $t
4517    }
4518}
4519
4520proc unbolden {} {
4521    global boldids
4522
4523    set stillbold {}
4524    foreach id $boldids {
4525        if {![ishighlighted $id]} {
4526            bolden $id mainfont
4527        } else {
4528            lappend stillbold $id
4529        }
4530    }
4531    set boldids $stillbold
4532}
4533
4534proc addvhighlight {n} {
4535    global hlview viewcomplete curview vhl_done commitidx
4536
4537    if {[info exists hlview]} {
4538        delvhighlight
4539    }
4540    set hlview $n
4541    if {$n != $curview && ![info exists viewcomplete($n)]} {
4542        start_rev_list $n
4543    }
4544    set vhl_done $commitidx($hlview)
4545    if {$vhl_done > 0} {
4546        drawvisible
4547    }
4548}
4549
4550proc delvhighlight {} {
4551    global hlview vhighlights
4552
4553    if {![info exists hlview]} return
4554    unset hlview
4555    catch {unset vhighlights}
4556    unbolden
4557}
4558
4559proc vhighlightmore {} {
4560    global hlview vhl_done commitidx vhighlights curview
4561
4562    set max $commitidx($hlview)
4563    set vr [visiblerows]
4564    set r0 [lindex $vr 0]
4565    set r1 [lindex $vr 1]
4566    for {set i $vhl_done} {$i < $max} {incr i} {
4567        set id [commitonrow $i $hlview]
4568        if {[commitinview $id $curview]} {
4569            set row [rowofcommit $id]
4570            if {$r0 <= $row && $row <= $r1} {
4571                if {![highlighted $row]} {
4572                    bolden $id mainfontbold
4573                }
4574                set vhighlights($id) 1
4575            }
4576        }
4577    }
4578    set vhl_done $max
4579    return 0
4580}
4581
4582proc askvhighlight {row id} {
4583    global hlview vhighlights iddrawn
4584
4585    if {[commitinview $id $hlview]} {
4586        if {[info exists iddrawn($id)] && ![ishighlighted $id]} {
4587            bolden $id mainfontbold
4588        }
4589        set vhighlights($id) 1
4590    } else {
4591        set vhighlights($id) 0
4592    }
4593}
4594
4595proc hfiles_change {} {
4596    global highlight_files filehighlight fhighlights fh_serial
4597    global highlight_paths
4598
4599    if {[info exists filehighlight]} {
4600        # delete previous highlights
4601        catch {close $filehighlight}
4602        unset filehighlight
4603        catch {unset fhighlights}
4604        unbolden
4605        unhighlight_filelist
4606    }
4607    set highlight_paths {}
4608    after cancel do_file_hl $fh_serial
4609    incr fh_serial
4610    if {$highlight_files ne {}} {
4611        after 300 do_file_hl $fh_serial
4612    }
4613}
4614
4615proc gdttype_change {name ix op} {
4616    global gdttype highlight_files findstring findpattern
4617
4618    stopfinding
4619    if {$findstring ne {}} {
4620        if {$gdttype eq [mc "containing:"]} {
4621            if {$highlight_files ne {}} {
4622                set highlight_files {}
4623                hfiles_change
4624            }
4625            findcom_change
4626        } else {
4627            if {$findpattern ne {}} {
4628                set findpattern {}
4629                findcom_change
4630            }
4631            set highlight_files $findstring
4632            hfiles_change
4633        }
4634        drawvisible
4635    }
4636    # enable/disable findtype/findloc menus too
4637}
4638
4639proc find_change {name ix op} {
4640    global gdttype findstring highlight_files
4641
4642    stopfinding
4643    if {$gdttype eq [mc "containing:"]} {
4644        findcom_change
4645    } else {
4646        if {$highlight_files ne $findstring} {
4647            set highlight_files $findstring
4648            hfiles_change
4649        }
4650    }
4651    drawvisible
4652}
4653
4654proc findcom_change args {
4655    global nhighlights boldnameids
4656    global findpattern findtype findstring gdttype
4657
4658    stopfinding
4659    # delete previous highlights, if any
4660    foreach id $boldnameids {
4661        bolden_name $id mainfont
4662    }
4663    set boldnameids {}
4664    catch {unset nhighlights}
4665    unbolden
4666    unmarkmatches
4667    if {$gdttype ne [mc "containing:"] || $findstring eq {}} {
4668        set findpattern {}
4669    } elseif {$findtype eq [mc "Regexp"]} {
4670        set findpattern $findstring
4671    } else {
4672        set e [string map {"*" "\\*" "?" "\\?" "\[" "\\\[" "\\" "\\\\"} \
4673                   $findstring]
4674        set findpattern "*$e*"
4675    }
4676}
4677
4678proc makepatterns {l} {
4679    set ret {}
4680    foreach e $l {
4681        set ee [string map {"*" "\\*" "?" "\\?" "\[" "\\\[" "\\" "\\\\"} $e]
4682        if {[string index $ee end] eq "/"} {
4683            lappend ret "$ee*"
4684        } else {
4685            lappend ret $ee
4686            lappend ret "$ee/*"
4687        }
4688    }
4689    return $ret
4690}
4691
4692proc do_file_hl {serial} {
4693    global highlight_files filehighlight highlight_paths gdttype fhl_list
4694    global cdup findtype
4695
4696    if {$gdttype eq [mc "touching paths:"]} {
4697        # If "exact" match then convert backslashes to forward slashes.
4698        # Most useful to support Windows-flavoured file paths.
4699        if {$findtype eq [mc "Exact"]} {
4700            set highlight_files [string map {"\\" "/"} $highlight_files]
4701        }
4702        if {[catch {set paths [shellsplit $highlight_files]}]} return
4703        set highlight_paths [makepatterns $paths]
4704        highlight_filelist
4705        set relative_paths {}
4706        foreach path $paths {
4707            lappend relative_paths [file join $cdup $path]
4708        }
4709        set gdtargs [concat -- $relative_paths]
4710    } elseif {$gdttype eq [mc "adding/removing string:"]} {
4711        set gdtargs [list "-S$highlight_files"]
4712    } elseif {$gdttype eq [mc "changing lines matching:"]} {
4713        set gdtargs [list "-G$highlight_files"]
4714    } else {
4715        # must be "containing:", i.e. we're searching commit info
4716        return
4717    }
4718    set cmd [concat | git diff-tree -r -s --stdin $gdtargs]
4719    set filehighlight [open $cmd r+]
4720    fconfigure $filehighlight -blocking 0
4721    filerun $filehighlight readfhighlight
4722    set fhl_list {}
4723    drawvisible
4724    flushhighlights
4725}
4726
4727proc flushhighlights {} {
4728    global filehighlight fhl_list
4729
4730    if {[info exists filehighlight]} {
4731        lappend fhl_list {}
4732        puts $filehighlight ""
4733        flush $filehighlight
4734    }
4735}
4736
4737proc askfilehighlight {row id} {
4738    global filehighlight fhighlights fhl_list
4739
4740    lappend fhl_list $id
4741    set fhighlights($id) -1
4742    puts $filehighlight $id
4743}
4744
4745proc readfhighlight {} {
4746    global filehighlight fhighlights curview iddrawn
4747    global fhl_list find_dirn
4748
4749    if {![info exists filehighlight]} {
4750        return 0
4751    }
4752    set nr 0
4753    while {[incr nr] <= 100 && [gets $filehighlight line] >= 0} {
4754        set line [string trim $line]
4755        set i [lsearch -exact $fhl_list $line]
4756        if {$i < 0} continue
4757        for {set j 0} {$j < $i} {incr j} {
4758            set id [lindex $fhl_list $j]
4759            set fhighlights($id) 0
4760        }
4761        set fhl_list [lrange $fhl_list [expr {$i+1}] end]
4762        if {$line eq {}} continue
4763        if {![commitinview $line $curview]} continue
4764        if {[info exists iddrawn($line)] && ![ishighlighted $line]} {
4765            bolden $line mainfontbold
4766        }
4767        set fhighlights($line) 1
4768    }
4769    if {[eof $filehighlight]} {
4770        # strange...
4771        puts "oops, git diff-tree died"
4772        catch {close $filehighlight}
4773        unset filehighlight
4774        return 0
4775    }
4776    if {[info exists find_dirn]} {
4777        run findmore
4778    }
4779    return 1
4780}
4781
4782proc doesmatch {f} {
4783    global findtype findpattern
4784
4785    if {$findtype eq [mc "Regexp"]} {
4786        return [regexp $findpattern $f]
4787    } elseif {$findtype eq [mc "IgnCase"]} {
4788        return [string match -nocase $findpattern $f]
4789    } else {
4790        return [string match $findpattern $f]
4791    }
4792}
4793
4794proc askfindhighlight {row id} {
4795    global nhighlights commitinfo iddrawn
4796    global findloc
4797    global markingmatches
4798
4799    if {![info exists commitinfo($id)]} {
4800        getcommit $id
4801    }
4802    set info $commitinfo($id)
4803    set isbold 0
4804    set fldtypes [list [mc Headline] [mc Author] "" [mc Committer] "" [mc Comments]]
4805    foreach f $info ty $fldtypes {
4806        if {$ty eq ""} continue
4807        if {($findloc eq [mc "All fields"] || $findloc eq $ty) &&
4808            [doesmatch $f]} {
4809            if {$ty eq [mc "Author"]} {
4810                set isbold 2
4811                break
4812            }
4813            set isbold 1
4814        }
4815    }
4816    if {$isbold && [info exists iddrawn($id)]} {
4817        if {![ishighlighted $id]} {
4818            bolden $id mainfontbold
4819            if {$isbold > 1} {
4820                bolden_name $id mainfontbold
4821            }
4822        }
4823        if {$markingmatches} {
4824            markrowmatches $row $id
4825        }
4826    }
4827    set nhighlights($id) $isbold
4828}
4829
4830proc markrowmatches {row id} {
4831    global canv canv2 linehtag linentag commitinfo findloc
4832
4833    set headline [lindex $commitinfo($id) 0]
4834    set author [lindex $commitinfo($id) 1]
4835    $canv delete match$row
4836    $canv2 delete match$row
4837    if {$findloc eq [mc "All fields"] || $findloc eq [mc "Headline"]} {
4838        set m [findmatches $headline]
4839        if {$m ne {}} {
4840            markmatches $canv $row $headline $linehtag($id) $m \
4841                [$canv itemcget $linehtag($id) -font] $row
4842        }
4843    }
4844    if {$findloc eq [mc "All fields"] || $findloc eq [mc "Author"]} {
4845        set m [findmatches $author]
4846        if {$m ne {}} {
4847            markmatches $canv2 $row $author $linentag($id) $m \
4848                [$canv2 itemcget $linentag($id) -font] $row
4849        }
4850    }
4851}
4852
4853proc vrel_change {name ix op} {
4854    global highlight_related
4855
4856    rhighlight_none
4857    if {$highlight_related ne [mc "None"]} {
4858        run drawvisible
4859    }
4860}
4861
4862# prepare for testing whether commits are descendents or ancestors of a
4863proc rhighlight_sel {a} {
4864    global descendent desc_todo ancestor anc_todo
4865    global highlight_related
4866
4867    catch {unset descendent}
4868    set desc_todo [list $a]
4869    catch {unset ancestor}
4870    set anc_todo [list $a]
4871    if {$highlight_related ne [mc "None"]} {
4872        rhighlight_none
4873        run drawvisible
4874    }
4875}
4876
4877proc rhighlight_none {} {
4878    global rhighlights
4879
4880    catch {unset rhighlights}
4881    unbolden
4882}
4883
4884proc is_descendent {a} {
4885    global curview children descendent desc_todo
4886
4887    set v $curview
4888    set la [rowofcommit $a]
4889    set todo $desc_todo
4890    set leftover {}
4891    set done 0
4892    for {set i 0} {$i < [llength $todo]} {incr i} {
4893        set do [lindex $todo $i]
4894        if {[rowofcommit $do] < $la} {
4895            lappend leftover $do
4896            continue
4897        }
4898        foreach nk $children($v,$do) {
4899            if {![info exists descendent($nk)]} {
4900                set descendent($nk) 1
4901                lappend todo $nk
4902                if {$nk eq $a} {
4903                    set done 1
4904                }
4905            }
4906        }
4907        if {$done} {
4908            set desc_todo [concat $leftover [lrange $todo [expr {$i+1}] end]]
4909            return
4910        }
4911    }
4912    set descendent($a) 0
4913    set desc_todo $leftover
4914}
4915
4916proc is_ancestor {a} {
4917    global curview parents ancestor anc_todo
4918
4919    set v $curview
4920    set la [rowofcommit $a]
4921    set todo $anc_todo
4922    set leftover {}
4923    set done 0
4924    for {set i 0} {$i < [llength $todo]} {incr i} {
4925        set do [lindex $todo $i]
4926        if {![commitinview $do $v] || [rowofcommit $do] > $la} {
4927            lappend leftover $do
4928            continue
4929        }
4930        foreach np $parents($v,$do) {
4931            if {![info exists ancestor($np)]} {
4932                set ancestor($np) 1
4933                lappend todo $np
4934                if {$np eq $a} {
4935                    set done 1
4936                }
4937            }
4938        }
4939        if {$done} {
4940            set anc_todo [concat $leftover [lrange $todo [expr {$i+1}] end]]
4941            return
4942        }
4943    }
4944    set ancestor($a) 0
4945    set anc_todo $leftover
4946}
4947
4948proc askrelhighlight {row id} {
4949    global descendent highlight_related iddrawn rhighlights
4950    global selectedline ancestor
4951
4952    if {$selectedline eq {}} return
4953    set isbold 0
4954    if {$highlight_related eq [mc "Descendant"] ||
4955        $highlight_related eq [mc "Not descendant"]} {
4956        if {![info exists descendent($id)]} {
4957            is_descendent $id
4958        }
4959        if {$descendent($id) == ($highlight_related eq [mc "Descendant"])} {
4960            set isbold 1
4961        }
4962    } elseif {$highlight_related eq [mc "Ancestor"] ||
4963              $highlight_related eq [mc "Not ancestor"]} {
4964        if {![info exists ancestor($id)]} {
4965            is_ancestor $id
4966        }
4967        if {$ancestor($id) == ($highlight_related eq [mc "Ancestor"])} {
4968            set isbold 1
4969        }
4970    }
4971    if {[info exists iddrawn($id)]} {
4972        if {$isbold && ![ishighlighted $id]} {
4973            bolden $id mainfontbold
4974        }
4975    }
4976    set rhighlights($id) $isbold
4977}
4978
4979# Graph layout functions
4980
4981proc shortids {ids} {
4982    set res {}
4983    foreach id $ids {
4984        if {[llength $id] > 1} {
4985            lappend res [shortids $id]
4986        } elseif {[regexp {^[0-9a-f]{40}$} $id]} {
4987            lappend res [string range $id 0 7]
4988        } else {
4989            lappend res $id
4990        }
4991    }
4992    return $res
4993}
4994
4995proc ntimes {n o} {
4996    set ret {}
4997    set o [list $o]
4998    for {set mask 1} {$mask <= $n} {incr mask $mask} {
4999        if {($n & $mask) != 0} {
5000            set ret [concat $ret $o]
5001        }
5002        set o [concat $o $o]
5003    }
5004    return $ret
5005}
5006
5007proc ordertoken {id} {
5008    global ordertok curview varcid varcstart varctok curview parents children
5009    global nullid nullid2
5010
5011    if {[info exists ordertok($id)]} {
5012        return $ordertok($id)
5013    }
5014    set origid $id
5015    set todo {}
5016    while {1} {
5017        if {[info exists varcid($curview,$id)]} {
5018            set a $varcid($curview,$id)
5019            set p [lindex $varcstart($curview) $a]
5020        } else {
5021            set p [lindex $children($curview,$id) 0]
5022        }
5023        if {[info exists ordertok($p)]} {
5024            set tok $ordertok($p)
5025            break
5026        }
5027        set id [first_real_child $curview,$p]
5028        if {$id eq {}} {
5029            # it's a root
5030            set tok [lindex $varctok($curview) $varcid($curview,$p)]
5031            break
5032        }
5033        if {[llength $parents($curview,$id)] == 1} {
5034            lappend todo [list $p {}]
5035        } else {
5036            set j [lsearch -exact $parents($curview,$id) $p]
5037            if {$j < 0} {
5038                puts "oops didn't find [shortids $p] in parents of [shortids $id]"
5039            }
5040            lappend todo [list $p [strrep $j]]
5041        }
5042    }
5043    for {set i [llength $todo]} {[incr i -1] >= 0} {} {
5044        set p [lindex $todo $i 0]
5045        append tok [lindex $todo $i 1]
5046        set ordertok($p) $tok
5047    }
5048    set ordertok($origid) $tok
5049    return $tok
5050}
5051
5052# Work out where id should go in idlist so that order-token
5053# values increase from left to right
5054proc idcol {idlist id {i 0}} {
5055    set t [ordertoken $id]
5056    if {$i < 0} {
5057        set i 0
5058    }
5059    if {$i >= [llength $idlist] || $t < [ordertoken [lindex $idlist $i]]} {
5060        if {$i > [llength $idlist]} {
5061            set i [llength $idlist]
5062        }
5063        while {[incr i -1] >= 0 && $t < [ordertoken [lindex $idlist $i]]} {}
5064        incr i
5065    } else {
5066        if {$t > [ordertoken [lindex $idlist $i]]} {
5067            while {[incr i] < [llength $idlist] &&
5068                   $t >= [ordertoken [lindex $idlist $i]]} {}
5069        }
5070    }
5071    return $i
5072}
5073
5074proc initlayout {} {
5075    global rowidlist rowisopt rowfinal displayorder parentlist
5076    global numcommits canvxmax canv
5077    global nextcolor
5078    global colormap rowtextx
5079
5080    set numcommits 0
5081    set displayorder {}
5082    set parentlist {}
5083    set nextcolor 0
5084    set rowidlist {}
5085    set rowisopt {}
5086    set rowfinal {}
5087    set canvxmax [$canv cget -width]
5088    catch {unset colormap}
5089    catch {unset rowtextx}
5090    setcanvscroll
5091}
5092
5093proc setcanvscroll {} {
5094    global canv canv2 canv3 numcommits linespc canvxmax canvy0
5095    global lastscrollset lastscrollrows
5096
5097    set ymax [expr {$canvy0 + ($numcommits - 0.5) * $linespc + 2}]
5098    $canv conf -scrollregion [list 0 0 $canvxmax $ymax]
5099    $canv2 conf -scrollregion [list 0 0 0 $ymax]
5100    $canv3 conf -scrollregion [list 0 0 0 $ymax]
5101    set lastscrollset [clock clicks -milliseconds]
5102    set lastscrollrows $numcommits
5103}
5104
5105proc visiblerows {} {
5106    global canv numcommits linespc
5107
5108    set ymax [lindex [$canv cget -scrollregion] 3]
5109    if {$ymax eq {} || $ymax == 0} return
5110    set f [$canv yview]
5111    set y0 [expr {int([lindex $f 0] * $ymax)}]
5112    set r0 [expr {int(($y0 - 3) / $linespc) - 1}]
5113    if {$r0 < 0} {
5114        set r0 0
5115    }
5116    set y1 [expr {int([lindex $f 1] * $ymax)}]
5117    set r1 [expr {int(($y1 - 3) / $linespc) + 1}]
5118    if {$r1 >= $numcommits} {
5119        set r1 [expr {$numcommits - 1}]
5120    }
5121    return [list $r0 $r1]
5122}
5123
5124proc layoutmore {} {
5125    global commitidx viewcomplete curview
5126    global numcommits pending_select curview
5127    global lastscrollset lastscrollrows
5128
5129    if {$lastscrollrows < 100 || $viewcomplete($curview) ||
5130        [clock clicks -milliseconds] - $lastscrollset > 500} {
5131        setcanvscroll
5132    }
5133    if {[info exists pending_select] &&
5134        [commitinview $pending_select $curview]} {
5135        update
5136        selectline [rowofcommit $pending_select] 1
5137    }
5138    drawvisible
5139}
5140
5141# With path limiting, we mightn't get the actual HEAD commit,
5142# so ask git rev-list what is the first ancestor of HEAD that
5143# touches a file in the path limit.
5144proc get_viewmainhead {view} {
5145    global viewmainheadid vfilelimit viewinstances mainheadid
5146
5147    catch {
5148        set rfd [open [concat | git rev-list -1 $mainheadid \
5149                           -- $vfilelimit($view)] r]
5150        set j [reg_instance $rfd]
5151        lappend viewinstances($view) $j
5152        fconfigure $rfd -blocking 0
5153        filerun $rfd [list getviewhead $rfd $j $view]
5154        set viewmainheadid($curview) {}
5155    }
5156}
5157
5158# git rev-list should give us just 1 line to use as viewmainheadid($view)
5159proc getviewhead {fd inst view} {
5160    global viewmainheadid commfd curview viewinstances showlocalchanges
5161
5162    set id {}
5163    if {[gets $fd line] < 0} {
5164        if {![eof $fd]} {
5165            return 1
5166        }
5167    } elseif {[string length $line] == 40 && [string is xdigit $line]} {
5168        set id $line
5169    }
5170    set viewmainheadid($view) $id
5171    close $fd
5172    unset commfd($inst)
5173    set i [lsearch -exact $viewinstances($view) $inst]
5174    if {$i >= 0} {
5175        set viewinstances($view) [lreplace $viewinstances($view) $i $i]
5176    }
5177    if {$showlocalchanges && $id ne {} && $view == $curview} {
5178        doshowlocalchanges
5179    }
5180    return 0
5181}
5182
5183proc doshowlocalchanges {} {
5184    global curview viewmainheadid
5185
5186    if {$viewmainheadid($curview) eq {}} return
5187    if {[commitinview $viewmainheadid($curview) $curview]} {
5188        dodiffindex
5189    } else {
5190        interestedin $viewmainheadid($curview) dodiffindex
5191    }
5192}
5193
5194proc dohidelocalchanges {} {
5195    global nullid nullid2 lserial curview
5196
5197    if {[commitinview $nullid $curview]} {
5198        removefakerow $nullid
5199    }
5200    if {[commitinview $nullid2 $curview]} {
5201        removefakerow $nullid2
5202    }
5203    incr lserial
5204}
5205
5206# spawn off a process to do git diff-index --cached HEAD
5207proc dodiffindex {} {
5208    global lserial showlocalchanges vfilelimit curview
5209    global hasworktree
5210
5211    if {!$showlocalchanges || !$hasworktree} return
5212    incr lserial
5213    set cmd "|git diff-index --cached HEAD"
5214    if {$vfilelimit($curview) ne {}} {
5215        set cmd [concat $cmd -- $vfilelimit($curview)]
5216    }
5217    set fd [open $cmd r]
5218    fconfigure $fd -blocking 0
5219    set i [reg_instance $fd]
5220    filerun $fd [list readdiffindex $fd $lserial $i]
5221}
5222
5223proc readdiffindex {fd serial inst} {
5224    global viewmainheadid nullid nullid2 curview commitinfo commitdata lserial
5225    global vfilelimit
5226
5227    set isdiff 1
5228    if {[gets $fd line] < 0} {
5229        if {![eof $fd]} {
5230            return 1
5231        }
5232        set isdiff 0
5233    }
5234    # we only need to see one line and we don't really care what it says...
5235    stop_instance $inst
5236
5237    if {$serial != $lserial} {
5238        return 0
5239    }
5240
5241    # now see if there are any local changes not checked in to the index
5242    set cmd "|git diff-files"
5243    if {$vfilelimit($curview) ne {}} {
5244        set cmd [concat $cmd -- $vfilelimit($curview)]
5245    }
5246    set fd [open $cmd r]
5247    fconfigure $fd -blocking 0
5248    set i [reg_instance $fd]
5249    filerun $fd [list readdifffiles $fd $serial $i]
5250
5251    if {$isdiff && ![commitinview $nullid2 $curview]} {
5252        # add the line for the changes in the index to the graph
5253        set hl [mc "Local changes checked in to index but not committed"]
5254        set commitinfo($nullid2) [list  $hl {} {} {} {} "    $hl\n"]
5255        set commitdata($nullid2) "\n    $hl\n"
5256        if {[commitinview $nullid $curview]} {
5257            removefakerow $nullid
5258        }
5259        insertfakerow $nullid2 $viewmainheadid($curview)
5260    } elseif {!$isdiff && [commitinview $nullid2 $curview]} {
5261        if {[commitinview $nullid $curview]} {
5262            removefakerow $nullid
5263        }
5264        removefakerow $nullid2
5265    }
5266    return 0
5267}
5268
5269proc readdifffiles {fd serial inst} {
5270    global viewmainheadid nullid nullid2 curview
5271    global commitinfo commitdata lserial
5272
5273    set isdiff 1
5274    if {[gets $fd line] < 0} {
5275        if {![eof $fd]} {
5276            return 1
5277        }
5278        set isdiff 0
5279    }
5280    # we only need to see one line and we don't really care what it says...
5281    stop_instance $inst
5282
5283    if {$serial != $lserial} {
5284        return 0
5285    }
5286
5287    if {$isdiff && ![commitinview $nullid $curview]} {
5288        # add the line for the local diff to the graph
5289        set hl [mc "Local uncommitted changes, not checked in to index"]
5290        set commitinfo($nullid) [list  $hl {} {} {} {} "    $hl\n"]
5291        set commitdata($nullid) "\n    $hl\n"
5292        if {[commitinview $nullid2 $curview]} {
5293            set p $nullid2
5294        } else {
5295            set p $viewmainheadid($curview)
5296        }
5297        insertfakerow $nullid $p
5298    } elseif {!$isdiff && [commitinview $nullid $curview]} {
5299        removefakerow $nullid
5300    }
5301    return 0
5302}
5303
5304proc nextuse {id row} {
5305    global curview children
5306
5307    if {[info exists children($curview,$id)]} {
5308        foreach kid $children($curview,$id) {
5309            if {![commitinview $kid $curview]} {
5310                return -1
5311            }
5312            if {[rowofcommit $kid] > $row} {
5313                return [rowofcommit $kid]
5314            }
5315        }
5316    }
5317    if {[commitinview $id $curview]} {
5318        return [rowofcommit $id]
5319    }
5320    return -1
5321}
5322
5323proc prevuse {id row} {
5324    global curview children
5325
5326    set ret -1
5327    if {[info exists children($curview,$id)]} {
5328        foreach kid $children($curview,$id) {
5329            if {![commitinview $kid $curview]} break
5330            if {[rowofcommit $kid] < $row} {
5331                set ret [rowofcommit $kid]
5332            }
5333        }
5334    }
5335    return $ret
5336}
5337
5338proc make_idlist {row} {
5339    global displayorder parentlist uparrowlen downarrowlen mingaplen
5340    global commitidx curview children
5341
5342    set r [expr {$row - $mingaplen - $downarrowlen - 1}]
5343    if {$r < 0} {
5344        set r 0
5345    }
5346    set ra [expr {$row - $downarrowlen}]
5347    if {$ra < 0} {
5348        set ra 0
5349    }
5350    set rb [expr {$row + $uparrowlen}]
5351    if {$rb > $commitidx($curview)} {
5352        set rb $commitidx($curview)
5353    }
5354    make_disporder $r [expr {$rb + 1}]
5355    set ids {}
5356    for {} {$r < $ra} {incr r} {
5357        set nextid [lindex $displayorder [expr {$r + 1}]]
5358        foreach p [lindex $parentlist $r] {
5359            if {$p eq $nextid} continue
5360            set rn [nextuse $p $r]
5361            if {$rn >= $row &&
5362                $rn <= $r + $downarrowlen + $mingaplen + $uparrowlen} {
5363                lappend ids [list [ordertoken $p] $p]
5364            }
5365        }
5366    }
5367    for {} {$r < $row} {incr r} {
5368        set nextid [lindex $displayorder [expr {$r + 1}]]
5369        foreach p [lindex $parentlist $r] {
5370            if {$p eq $nextid} continue
5371            set rn [nextuse $p $r]
5372            if {$rn < 0 || $rn >= $row} {
5373                lappend ids [list [ordertoken $p] $p]
5374            }
5375        }
5376    }
5377    set id [lindex $displayorder $row]
5378    lappend ids [list [ordertoken $id] $id]
5379    while {$r < $rb} {
5380        foreach p [lindex $parentlist $r] {
5381            set firstkid [lindex $children($curview,$p) 0]
5382            if {[rowofcommit $firstkid] < $row} {
5383                lappend ids [list [ordertoken $p] $p]
5384            }
5385        }
5386        incr r
5387        set id [lindex $displayorder $r]
5388        if {$id ne {}} {
5389            set firstkid [lindex $children($curview,$id) 0]
5390            if {$firstkid ne {} && [rowofcommit $firstkid] < $row} {
5391                lappend ids [list [ordertoken $id] $id]
5392            }
5393        }
5394    }
5395    set idlist {}
5396    foreach idx [lsort -unique $ids] {
5397        lappend idlist [lindex $idx 1]
5398    }
5399    return $idlist
5400}
5401
5402proc rowsequal {a b} {
5403    while {[set i [lsearch -exact $a {}]] >= 0} {
5404        set a [lreplace $a $i $i]
5405    }
5406    while {[set i [lsearch -exact $b {}]] >= 0} {
5407        set b [lreplace $b $i $i]
5408    }
5409    return [expr {$a eq $b}]
5410}
5411
5412proc makeupline {id row rend col} {
5413    global rowidlist uparrowlen downarrowlen mingaplen
5414
5415    for {set r $rend} {1} {set r $rstart} {
5416        set rstart [prevuse $id $r]
5417        if {$rstart < 0} return
5418        if {$rstart < $row} break
5419    }
5420    if {$rstart + $uparrowlen + $mingaplen + $downarrowlen < $rend} {
5421        set rstart [expr {$rend - $uparrowlen - 1}]
5422    }
5423    for {set r $rstart} {[incr r] <= $row} {} {
5424        set idlist [lindex $rowidlist $r]
5425        if {$idlist ne {} && [lsearch -exact $idlist $id] < 0} {
5426            set col [idcol $idlist $id $col]
5427            lset rowidlist $r [linsert $idlist $col $id]
5428            changedrow $r
5429        }
5430    }
5431}
5432
5433proc layoutrows {row endrow} {
5434    global rowidlist rowisopt rowfinal displayorder
5435    global uparrowlen downarrowlen maxwidth mingaplen
5436    global children parentlist
5437    global commitidx viewcomplete curview
5438
5439    make_disporder [expr {$row - 1}] [expr {$endrow + $uparrowlen}]
5440    set idlist {}
5441    if {$row > 0} {
5442        set rm1 [expr {$row - 1}]
5443        foreach id [lindex $rowidlist $rm1] {
5444            if {$id ne {}} {
5445                lappend idlist $id
5446            }
5447        }
5448        set final [lindex $rowfinal $rm1]
5449    }
5450    for {} {$row < $endrow} {incr row} {
5451        set rm1 [expr {$row - 1}]
5452        if {$rm1 < 0 || $idlist eq {}} {
5453            set idlist [make_idlist $row]
5454            set final 1
5455        } else {
5456            set id [lindex $displayorder $rm1]
5457            set col [lsearch -exact $idlist $id]
5458            set idlist [lreplace $idlist $col $col]
5459            foreach p [lindex $parentlist $rm1] {
5460                if {[lsearch -exact $idlist $p] < 0} {
5461                    set col [idcol $idlist $p $col]
5462                    set idlist [linsert $idlist $col $p]
5463                    # if not the first child, we have to insert a line going up
5464                    if {$id ne [lindex $children($curview,$p) 0]} {
5465                        makeupline $p $rm1 $row $col
5466                    }
5467                }
5468            }
5469            set id [lindex $displayorder $row]
5470            if {$row > $downarrowlen} {
5471                set termrow [expr {$row - $downarrowlen - 1}]
5472                foreach p [lindex $parentlist $termrow] {
5473                    set i [lsearch -exact $idlist $p]
5474                    if {$i < 0} continue
5475                    set nr [nextuse $p $termrow]
5476                    if {$nr < 0 || $nr >= $row + $mingaplen + $uparrowlen} {
5477                        set idlist [lreplace $idlist $i $i]
5478                    }
5479                }
5480            }
5481            set col [lsearch -exact $idlist $id]
5482            if {$col < 0} {
5483                set col [idcol $idlist $id]
5484                set idlist [linsert $idlist $col $id]
5485                if {$children($curview,$id) ne {}} {
5486                    makeupline $id $rm1 $row $col
5487                }
5488            }
5489            set r [expr {$row + $uparrowlen - 1}]
5490            if {$r < $commitidx($curview)} {
5491                set x $col
5492                foreach p [lindex $parentlist $r] {
5493                    if {[lsearch -exact $idlist $p] >= 0} continue
5494                    set fk [lindex $children($curview,$p) 0]
5495                    if {[rowofcommit $fk] < $row} {
5496                        set x [idcol $idlist $p $x]
5497                        set idlist [linsert $idlist $x $p]
5498                    }
5499                }
5500                if {[incr r] < $commitidx($curview)} {
5501                    set p [lindex $displayorder $r]
5502                    if {[lsearch -exact $idlist $p] < 0} {
5503                        set fk [lindex $children($curview,$p) 0]
5504                        if {$fk ne {} && [rowofcommit $fk] < $row} {
5505                            set x [idcol $idlist $p $x]
5506                            set idlist [linsert $idlist $x $p]
5507                        }
5508                    }
5509                }
5510            }
5511        }
5512        if {$final && !$viewcomplete($curview) &&
5513            $row + $uparrowlen + $mingaplen + $downarrowlen
5514                >= $commitidx($curview)} {
5515            set final 0
5516        }
5517        set l [llength $rowidlist]
5518        if {$row == $l} {
5519            lappend rowidlist $idlist
5520            lappend rowisopt 0
5521            lappend rowfinal $final
5522        } elseif {$row < $l} {
5523            if {![rowsequal $idlist [lindex $rowidlist $row]]} {
5524                lset rowidlist $row $idlist
5525                changedrow $row
5526            }
5527            lset rowfinal $row $final
5528        } else {
5529            set pad [ntimes [expr {$row - $l}] {}]
5530            set rowidlist [concat $rowidlist $pad]
5531            lappend rowidlist $idlist
5532            set rowfinal [concat $rowfinal $pad]
5533            lappend rowfinal $final
5534            set rowisopt [concat $rowisopt [ntimes [expr {$row - $l + 1}] 0]]
5535        }
5536    }
5537    return $row
5538}
5539
5540proc changedrow {row} {
5541    global displayorder iddrawn rowisopt need_redisplay
5542
5543    set l [llength $rowisopt]
5544    if {$row < $l} {
5545        lset rowisopt $row 0
5546        if {$row + 1 < $l} {
5547            lset rowisopt [expr {$row + 1}] 0
5548            if {$row + 2 < $l} {
5549                lset rowisopt [expr {$row + 2}] 0
5550            }
5551        }
5552    }
5553    set id [lindex $displayorder $row]
5554    if {[info exists iddrawn($id)]} {
5555        set need_redisplay 1
5556    }
5557}
5558
5559proc insert_pad {row col npad} {
5560    global rowidlist
5561
5562    set pad [ntimes $npad {}]
5563    set idlist [lindex $rowidlist $row]
5564    set bef [lrange $idlist 0 [expr {$col - 1}]]
5565    set aft [lrange $idlist $col end]
5566    set i [lsearch -exact $aft {}]
5567    if {$i > 0} {
5568        set aft [lreplace $aft $i $i]
5569    }
5570    lset rowidlist $row [concat $bef $pad $aft]
5571    changedrow $row
5572}
5573
5574proc optimize_rows {row col endrow} {
5575    global rowidlist rowisopt displayorder curview children
5576
5577    if {$row < 1} {
5578        set row 1
5579    }
5580    for {} {$row < $endrow} {incr row; set col 0} {
5581        if {[lindex $rowisopt $row]} continue
5582        set haspad 0
5583        set y0 [expr {$row - 1}]
5584        set ym [expr {$row - 2}]
5585        set idlist [lindex $rowidlist $row]
5586        set previdlist [lindex $rowidlist $y0]
5587        if {$idlist eq {} || $previdlist eq {}} continue
5588        if {$ym >= 0} {
5589            set pprevidlist [lindex $rowidlist $ym]
5590            if {$pprevidlist eq {}} continue
5591        } else {
5592            set pprevidlist {}
5593        }
5594        set x0 -1
5595        set xm -1
5596        for {} {$col < [llength $idlist]} {incr col} {
5597            set id [lindex $idlist $col]
5598            if {[lindex $previdlist $col] eq $id} continue
5599            if {$id eq {}} {
5600                set haspad 1
5601                continue
5602            }
5603            set x0 [lsearch -exact $previdlist $id]
5604            if {$x0 < 0} continue
5605            set z [expr {$x0 - $col}]
5606            set isarrow 0
5607            set z0 {}
5608            if {$ym >= 0} {
5609                set xm [lsearch -exact $pprevidlist $id]
5610                if {$xm >= 0} {
5611                    set z0 [expr {$xm - $x0}]
5612                }
5613            }
5614            if {$z0 eq {}} {
5615                # if row y0 is the first child of $id then it's not an arrow
5616                if {[lindex $children($curview,$id) 0] ne
5617                    [lindex $displayorder $y0]} {
5618                    set isarrow 1
5619                }
5620            }
5621            if {!$isarrow && $id ne [lindex $displayorder $row] &&
5622                [lsearch -exact [lindex $rowidlist [expr {$row+1}]] $id] < 0} {
5623                set isarrow 1
5624            }
5625            # Looking at lines from this row to the previous row,
5626            # make them go straight up if they end in an arrow on
5627            # the previous row; otherwise make them go straight up
5628            # or at 45 degrees.
5629            if {$z < -1 || ($z < 0 && $isarrow)} {
5630                # Line currently goes left too much;
5631                # insert pads in the previous row, then optimize it
5632                set npad [expr {-1 - $z + $isarrow}]
5633                insert_pad $y0 $x0 $npad
5634                if {$y0 > 0} {
5635                    optimize_rows $y0 $x0 $row
5636                }
5637                set previdlist [lindex $rowidlist $y0]
5638                set x0 [lsearch -exact $previdlist $id]
5639                set z [expr {$x0 - $col}]
5640                if {$z0 ne {}} {
5641                    set pprevidlist [lindex $rowidlist $ym]
5642                    set xm [lsearch -exact $pprevidlist $id]
5643                    set z0 [expr {$xm - $x0}]
5644                }
5645            } elseif {$z > 1 || ($z > 0 && $isarrow)} {
5646                # Line currently goes right too much;
5647                # insert pads in this line
5648                set npad [expr {$z - 1 + $isarrow}]
5649                insert_pad $row $col $npad
5650                set idlist [lindex $rowidlist $row]
5651                incr col $npad
5652                set z [expr {$x0 - $col}]
5653                set haspad 1
5654            }
5655            if {$z0 eq {} && !$isarrow && $ym >= 0} {
5656                # this line links to its first child on row $row-2
5657                set id [lindex $displayorder $ym]
5658                set xc [lsearch -exact $pprevidlist $id]
5659                if {$xc >= 0} {
5660                    set z0 [expr {$xc - $x0}]
5661                }
5662            }
5663            # avoid lines jigging left then immediately right
5664            if {$z0 ne {} && $z < 0 && $z0 > 0} {
5665                insert_pad $y0 $x0 1
5666                incr x0
5667                optimize_rows $y0 $x0 $row
5668                set previdlist [lindex $rowidlist $y0]
5669            }
5670        }
5671        if {!$haspad} {
5672            # Find the first column that doesn't have a line going right
5673            for {set col [llength $idlist]} {[incr col -1] >= 0} {} {
5674                set id [lindex $idlist $col]
5675                if {$id eq {}} break
5676                set x0 [lsearch -exact $previdlist $id]
5677                if {$x0 < 0} {
5678                    # check if this is the link to the first child
5679                    set kid [lindex $displayorder $y0]
5680                    if {[lindex $children($curview,$id) 0] eq $kid} {
5681                        # it is, work out offset to child
5682                        set x0 [lsearch -exact $previdlist $kid]
5683                    }
5684                }
5685                if {$x0 <= $col} break
5686            }
5687            # Insert a pad at that column as long as it has a line and
5688            # isn't the last column
5689            if {$x0 >= 0 && [incr col] < [llength $idlist]} {
5690                set idlist [linsert $idlist $col {}]
5691                lset rowidlist $row $idlist
5692                changedrow $row
5693            }
5694        }
5695    }
5696}
5697
5698proc xc {row col} {
5699    global canvx0 linespc
5700    return [expr {$canvx0 + $col * $linespc}]
5701}
5702
5703proc yc {row} {
5704    global canvy0 linespc
5705    return [expr {$canvy0 + $row * $linespc}]
5706}
5707
5708proc linewidth {id} {
5709    global thickerline lthickness
5710
5711    set wid $lthickness
5712    if {[info exists thickerline] && $id eq $thickerline} {
5713        set wid [expr {2 * $lthickness}]
5714    }
5715    return $wid
5716}
5717
5718proc rowranges {id} {
5719    global curview children uparrowlen downarrowlen
5720    global rowidlist
5721
5722    set kids $children($curview,$id)
5723    if {$kids eq {}} {
5724        return {}
5725    }
5726    set ret {}
5727    lappend kids $id
5728    foreach child $kids {
5729        if {![commitinview $child $curview]} break
5730        set row [rowofcommit $child]
5731        if {![info exists prev]} {
5732            lappend ret [expr {$row + 1}]
5733        } else {
5734            if {$row <= $prevrow} {
5735                puts "oops children of [shortids $id] out of order [shortids $child] $row <= [shortids $prev] $prevrow"
5736            }
5737            # see if the line extends the whole way from prevrow to row
5738            if {$row > $prevrow + $uparrowlen + $downarrowlen &&
5739                [lsearch -exact [lindex $rowidlist \
5740                            [expr {int(($row + $prevrow) / 2)}]] $id] < 0} {
5741                # it doesn't, see where it ends
5742                set r [expr {$prevrow + $downarrowlen}]
5743                if {[lsearch -exact [lindex $rowidlist $r] $id] < 0} {
5744                    while {[incr r -1] > $prevrow &&
5745                           [lsearch -exact [lindex $rowidlist $r] $id] < 0} {}
5746                } else {
5747                    while {[incr r] <= $row &&
5748                           [lsearch -exact [lindex $rowidlist $r] $id] >= 0} {}
5749                    incr r -1
5750                }
5751                lappend ret $r
5752                # see where it starts up again
5753                set r [expr {$row - $uparrowlen}]
5754                if {[lsearch -exact [lindex $rowidlist $r] $id] < 0} {
5755                    while {[incr r] < $row &&
5756                           [lsearch -exact [lindex $rowidlist $r] $id] < 0} {}
5757                } else {
5758                    while {[incr r -1] >= $prevrow &&
5759                           [lsearch -exact [lindex $rowidlist $r] $id] >= 0} {}
5760                    incr r
5761                }
5762                lappend ret $r
5763            }
5764        }
5765        if {$child eq $id} {
5766            lappend ret $row
5767        }
5768        set prev $child
5769        set prevrow $row
5770    }
5771    return $ret
5772}
5773
5774proc drawlineseg {id row endrow arrowlow} {
5775    global rowidlist displayorder iddrawn linesegs
5776    global canv colormap linespc curview maxlinelen parentlist
5777
5778    set cols [list [lsearch -exact [lindex $rowidlist $row] $id]]
5779    set le [expr {$row + 1}]
5780    set arrowhigh 1
5781    while {1} {
5782        set c [lsearch -exact [lindex $rowidlist $le] $id]
5783        if {$c < 0} {
5784            incr le -1
5785            break
5786        }
5787        lappend cols $c
5788        set x [lindex $displayorder $le]
5789        if {$x eq $id} {
5790            set arrowhigh 0
5791            break
5792        }
5793        if {[info exists iddrawn($x)] || $le == $endrow} {
5794            set c [lsearch -exact [lindex $rowidlist [expr {$le+1}]] $id]
5795            if {$c >= 0} {
5796                lappend cols $c
5797                set arrowhigh 0
5798            }
5799            break
5800        }
5801        incr le
5802    }
5803    if {$le <= $row} {
5804        return $row
5805    }
5806
5807    set lines {}
5808    set i 0
5809    set joinhigh 0
5810    if {[info exists linesegs($id)]} {
5811        set lines $linesegs($id)
5812        foreach li $lines {
5813            set r0 [lindex $li 0]
5814            if {$r0 > $row} {
5815                if {$r0 == $le && [lindex $li 1] - $row <= $maxlinelen} {
5816                    set joinhigh 1
5817                }
5818                break
5819            }
5820            incr i
5821        }
5822    }
5823    set joinlow 0
5824    if {$i > 0} {
5825        set li [lindex $lines [expr {$i-1}]]
5826        set r1 [lindex $li 1]
5827        if {$r1 == $row && $le - [lindex $li 0] <= $maxlinelen} {
5828            set joinlow 1
5829        }
5830    }
5831
5832    set x [lindex $cols [expr {$le - $row}]]
5833    set xp [lindex $cols [expr {$le - 1 - $row}]]
5834    set dir [expr {$xp - $x}]
5835    if {$joinhigh} {
5836        set ith [lindex $lines $i 2]
5837        set coords [$canv coords $ith]
5838        set ah [$canv itemcget $ith -arrow]
5839        set arrowhigh [expr {$ah eq "first" || $ah eq "both"}]
5840        set x2 [lindex $cols [expr {$le + 1 - $row}]]
5841        if {$x2 ne {} && $x - $x2 == $dir} {
5842            set coords [lrange $coords 0 end-2]
5843        }
5844    } else {
5845        set coords [list [xc $le $x] [yc $le]]
5846    }
5847    if {$joinlow} {
5848        set itl [lindex $lines [expr {$i-1}] 2]
5849        set al [$canv itemcget $itl -arrow]
5850        set arrowlow [expr {$al eq "last" || $al eq "both"}]
5851    } elseif {$arrowlow} {
5852        if {[lsearch -exact [lindex $rowidlist [expr {$row-1}]] $id] >= 0 ||
5853            [lsearch -exact [lindex $parentlist [expr {$row-1}]] $id] >= 0} {
5854            set arrowlow 0
5855        }
5856    }
5857    set arrow [lindex {none first last both} [expr {$arrowhigh + 2*$arrowlow}]]
5858    for {set y $le} {[incr y -1] > $row} {} {
5859        set x $xp
5860        set xp [lindex $cols [expr {$y - 1 - $row}]]
5861        set ndir [expr {$xp - $x}]
5862        if {$dir != $ndir || $xp < 0} {
5863            lappend coords [xc $y $x] [yc $y]
5864        }
5865        set dir $ndir
5866    }
5867    if {!$joinlow} {
5868        if {$xp < 0} {
5869            # join parent line to first child
5870            set ch [lindex $displayorder $row]
5871            set xc [lsearch -exact [lindex $rowidlist $row] $ch]
5872            if {$xc < 0} {
5873                puts "oops: drawlineseg: child $ch not on row $row"
5874            } elseif {$xc != $x} {
5875                if {($arrowhigh && $le == $row + 1) || $dir == 0} {
5876                    set d [expr {int(0.5 * $linespc)}]
5877                    set x1 [xc $row $x]
5878                    if {$xc < $x} {
5879                        set x2 [expr {$x1 - $d}]
5880                    } else {
5881                        set x2 [expr {$x1 + $d}]
5882                    }
5883                    set y2 [yc $row]
5884                    set y1 [expr {$y2 + $d}]
5885                    lappend coords $x1 $y1 $x2 $y2
5886                } elseif {$xc < $x - 1} {
5887                    lappend coords [xc $row [expr {$x-1}]] [yc $row]
5888                } elseif {$xc > $x + 1} {
5889                    lappend coords [xc $row [expr {$x+1}]] [yc $row]
5890                }
5891                set x $xc
5892            }
5893            lappend coords [xc $row $x] [yc $row]
5894        } else {
5895            set xn [xc $row $xp]
5896            set yn [yc $row]
5897            lappend coords $xn $yn
5898        }
5899        if {!$joinhigh} {
5900            assigncolor $id
5901            set t [$canv create line $coords -width [linewidth $id] \
5902                       -fill $colormap($id) -tags lines.$id -arrow $arrow]
5903            $canv lower $t
5904            bindline $t $id
5905            set lines [linsert $lines $i [list $row $le $t]]
5906        } else {
5907            $canv coords $ith $coords
5908            if {$arrow ne $ah} {
5909                $canv itemconf $ith -arrow $arrow
5910            }
5911            lset lines $i 0 $row
5912        }
5913    } else {
5914        set xo [lsearch -exact [lindex $rowidlist [expr {$row - 1}]] $id]
5915        set ndir [expr {$xo - $xp}]
5916        set clow [$canv coords $itl]
5917        if {$dir == $ndir} {
5918            set clow [lrange $clow 2 end]
5919        }
5920        set coords [concat $coords $clow]
5921        if {!$joinhigh} {
5922            lset lines [expr {$i-1}] 1 $le
5923        } else {
5924            # coalesce two pieces
5925            $canv delete $ith
5926            set b [lindex $lines [expr {$i-1}] 0]
5927            set e [lindex $lines $i 1]
5928            set lines [lreplace $lines [expr {$i-1}] $i [list $b $e $itl]]
5929        }
5930        $canv coords $itl $coords
5931        if {$arrow ne $al} {
5932            $canv itemconf $itl -arrow $arrow
5933        }
5934    }
5935
5936    set linesegs($id) $lines
5937    return $le
5938}
5939
5940proc drawparentlinks {id row} {
5941    global rowidlist canv colormap curview parentlist
5942    global idpos linespc
5943
5944    set rowids [lindex $rowidlist $row]
5945    set col [lsearch -exact $rowids $id]
5946    if {$col < 0} return
5947    set olds [lindex $parentlist $row]
5948    set row2 [expr {$row + 1}]
5949    set x [xc $row $col]
5950    set y [yc $row]
5951    set y2 [yc $row2]
5952    set d [expr {int(0.5 * $linespc)}]
5953    set ymid [expr {$y + $d}]
5954    set ids [lindex $rowidlist $row2]
5955    # rmx = right-most X coord used
5956    set rmx 0
5957    foreach p $olds {
5958        set i [lsearch -exact $ids $p]
5959        if {$i < 0} {
5960            puts "oops, parent $p of $id not in list"
5961            continue
5962        }
5963        set x2 [xc $row2 $i]
5964        if {$x2 > $rmx} {
5965            set rmx $x2
5966        }
5967        set j [lsearch -exact $rowids $p]
5968        if {$j < 0} {
5969            # drawlineseg will do this one for us
5970            continue
5971        }
5972        assigncolor $p
5973        # should handle duplicated parents here...
5974        set coords [list $x $y]
5975        if {$i != $col} {
5976            # if attaching to a vertical segment, draw a smaller
5977            # slant for visual distinctness
5978            if {$i == $j} {
5979                if {$i < $col} {
5980                    lappend coords [expr {$x2 + $d}] $y $x2 $ymid
5981                } else {
5982                    lappend coords [expr {$x2 - $d}] $y $x2 $ymid
5983                }
5984            } elseif {$i < $col && $i < $j} {
5985                # segment slants towards us already
5986                lappend coords [xc $row $j] $y
5987            } else {
5988                if {$i < $col - 1} {
5989                    lappend coords [expr {$x2 + $linespc}] $y
5990                } elseif {$i > $col + 1} {
5991                    lappend coords [expr {$x2 - $linespc}] $y
5992                }
5993                lappend coords $x2 $y2
5994            }
5995        } else {
5996            lappend coords $x2 $y2
5997        }
5998        set t [$canv create line $coords -width [linewidth $p] \
5999                   -fill $colormap($p) -tags lines.$p]
6000        $canv lower $t
6001        bindline $t $p
6002    }
6003    if {$rmx > [lindex $idpos($id) 1]} {
6004        lset idpos($id) 1 $rmx
6005        redrawtags $id
6006    }
6007}
6008
6009proc drawlines {id} {
6010    global canv
6011
6012    $canv itemconf lines.$id -width [linewidth $id]
6013}
6014
6015proc drawcmittext {id row col} {
6016    global linespc canv canv2 canv3 fgcolor curview
6017    global cmitlisted commitinfo rowidlist parentlist
6018    global rowtextx idpos idtags idheads idotherrefs
6019    global linehtag linentag linedtag selectedline
6020    global canvxmax boldids boldnameids fgcolor markedid
6021    global mainheadid nullid nullid2 circleitem circlecolors ctxbut
6022    global mainheadcirclecolor workingfilescirclecolor indexcirclecolor
6023    global circleoutlinecolor
6024
6025    # listed is 0 for boundary, 1 for normal, 2 for negative, 3 for left, 4 for right
6026    set listed $cmitlisted($curview,$id)
6027    if {$id eq $nullid} {
6028        set ofill $workingfilescirclecolor
6029    } elseif {$id eq $nullid2} {
6030        set ofill $indexcirclecolor
6031    } elseif {$id eq $mainheadid} {
6032        set ofill $mainheadcirclecolor
6033    } else {
6034        set ofill [lindex $circlecolors $listed]
6035    }
6036    set x [xc $row $col]
6037    set y [yc $row]
6038    set orad [expr {$linespc / 3}]
6039    if {$listed <= 2} {
6040        set t [$canv create oval [expr {$x - $orad}] [expr {$y - $orad}] \
6041                   [expr {$x + $orad - 1}] [expr {$y + $orad - 1}] \
6042                   -fill $ofill -outline $circleoutlinecolor -width 1 -tags circle]
6043    } elseif {$listed == 3} {
6044        # triangle pointing left for left-side commits
6045        set t [$canv create polygon \
6046                   [expr {$x - $orad}] $y \
6047                   [expr {$x + $orad - 1}] [expr {$y - $orad}] \
6048                   [expr {$x + $orad - 1}] [expr {$y + $orad - 1}] \
6049                   -fill $ofill -outline $circleoutlinecolor -width 1 -tags circle]
6050    } else {
6051        # triangle pointing right for right-side commits
6052        set t [$canv create polygon \
6053                   [expr {$x + $orad - 1}] $y \
6054                   [expr {$x - $orad}] [expr {$y - $orad}] \
6055                   [expr {$x - $orad}] [expr {$y + $orad - 1}] \
6056                   -fill $ofill -outline $circleoutlinecolor -width 1 -tags circle]
6057    }
6058    set circleitem($row) $t
6059    $canv raise $t
6060    $canv bind $t <1> {selcanvline {} %x %y}
6061    set rmx [llength [lindex $rowidlist $row]]
6062    set olds [lindex $parentlist $row]
6063    if {$olds ne {}} {
6064        set nextids [lindex $rowidlist [expr {$row + 1}]]
6065        foreach p $olds {
6066            set i [lsearch -exact $nextids $p]
6067            if {$i > $rmx} {
6068                set rmx $i
6069            }
6070        }
6071    }
6072    set xt [xc $row $rmx]
6073    set rowtextx($row) $xt
6074    set idpos($id) [list $x $xt $y]
6075    if {[info exists idtags($id)] || [info exists idheads($id)]
6076        || [info exists idotherrefs($id)]} {
6077        set xt [drawtags $id $x $xt $y]
6078    }
6079    if {[lindex $commitinfo($id) 6] > 0} {
6080        set xt [drawnotesign $xt $y]
6081    }
6082    set headline [lindex $commitinfo($id) 0]
6083    set name [lindex $commitinfo($id) 1]
6084    set date [lindex $commitinfo($id) 2]
6085    set date [formatdate $date]
6086    set font mainfont
6087    set nfont mainfont
6088    set isbold [ishighlighted $id]
6089    if {$isbold > 0} {
6090        lappend boldids $id
6091        set font mainfontbold
6092        if {$isbold > 1} {
6093            lappend boldnameids $id
6094            set nfont mainfontbold
6095        }
6096    }
6097    set linehtag($id) [$canv create text $xt $y -anchor w -fill $fgcolor \
6098                           -text $headline -font $font -tags text]
6099    $canv bind $linehtag($id) $ctxbut "rowmenu %X %Y $id"
6100    set linentag($id) [$canv2 create text 3 $y -anchor w -fill $fgcolor \
6101                           -text $name -font $nfont -tags text]
6102    set linedtag($id) [$canv3 create text 3 $y -anchor w -fill $fgcolor \
6103                           -text $date -font mainfont -tags text]
6104    if {$selectedline == $row} {
6105        make_secsel $id
6106    }
6107    if {[info exists markedid] && $markedid eq $id} {
6108        make_idmark $id
6109    }
6110    set xr [expr {$xt + [font measure $font $headline]}]
6111    if {$xr > $canvxmax} {
6112        set canvxmax $xr
6113        setcanvscroll
6114    }
6115}
6116
6117proc drawcmitrow {row} {
6118    global displayorder rowidlist nrows_drawn
6119    global iddrawn markingmatches
6120    global commitinfo numcommits
6121    global filehighlight fhighlights findpattern nhighlights
6122    global hlview vhighlights
6123    global highlight_related rhighlights
6124
6125    if {$row >= $numcommits} return
6126
6127    set id [lindex $displayorder $row]
6128    if {[info exists hlview] && ![info exists vhighlights($id)]} {
6129        askvhighlight $row $id
6130    }
6131    if {[info exists filehighlight] && ![info exists fhighlights($id)]} {
6132        askfilehighlight $row $id
6133    }
6134    if {$findpattern ne {} && ![info exists nhighlights($id)]} {
6135        askfindhighlight $row $id
6136    }
6137    if {$highlight_related ne [mc "None"] && ![info exists rhighlights($id)]} {
6138        askrelhighlight $row $id
6139    }
6140    if {![info exists iddrawn($id)]} {
6141        set col [lsearch -exact [lindex $rowidlist $row] $id]
6142        if {$col < 0} {
6143            puts "oops, row $row id $id not in list"
6144            return
6145        }
6146        if {![info exists commitinfo($id)]} {
6147            getcommit $id
6148        }
6149        assigncolor $id
6150        drawcmittext $id $row $col
6151        set iddrawn($id) 1
6152        incr nrows_drawn
6153    }
6154    if {$markingmatches} {
6155        markrowmatches $row $id
6156    }
6157}
6158
6159proc drawcommits {row {endrow {}}} {
6160    global numcommits iddrawn displayorder curview need_redisplay
6161    global parentlist rowidlist rowfinal uparrowlen downarrowlen nrows_drawn
6162
6163    if {$row < 0} {
6164        set row 0
6165    }
6166    if {$endrow eq {}} {
6167        set endrow $row
6168    }
6169    if {$endrow >= $numcommits} {
6170        set endrow [expr {$numcommits - 1}]
6171    }
6172
6173    set rl1 [expr {$row - $downarrowlen - 3}]
6174    if {$rl1 < 0} {
6175        set rl1 0
6176    }
6177    set ro1 [expr {$row - 3}]
6178    if {$ro1 < 0} {
6179        set ro1 0
6180    }
6181    set r2 [expr {$endrow + $uparrowlen + 3}]
6182    if {$r2 > $numcommits} {
6183        set r2 $numcommits
6184    }
6185    for {set r $rl1} {$r < $r2} {incr r} {
6186        if {[lindex $rowidlist $r] ne {} && [lindex $rowfinal $r]} {
6187            if {$rl1 < $r} {
6188                layoutrows $rl1 $r
6189            }
6190            set rl1 [expr {$r + 1}]
6191        }
6192    }
6193    if {$rl1 < $r} {
6194        layoutrows $rl1 $r
6195    }
6196    optimize_rows $ro1 0 $r2
6197    if {$need_redisplay || $nrows_drawn > 2000} {
6198        clear_display
6199    }
6200
6201    # make the lines join to already-drawn rows either side
6202    set r [expr {$row - 1}]
6203    if {$r < 0 || ![info exists iddrawn([lindex $displayorder $r])]} {
6204        set r $row
6205    }
6206    set er [expr {$endrow + 1}]
6207    if {$er >= $numcommits ||
6208        ![info exists iddrawn([lindex $displayorder $er])]} {
6209        set er $endrow
6210    }
6211    for {} {$r <= $er} {incr r} {
6212        set id [lindex $displayorder $r]
6213        set wasdrawn [info exists iddrawn($id)]
6214        drawcmitrow $r
6215        if {$r == $er} break
6216        set nextid [lindex $displayorder [expr {$r + 1}]]
6217        if {$wasdrawn && [info exists iddrawn($nextid)]} continue
6218        drawparentlinks $id $r
6219
6220        set rowids [lindex $rowidlist $r]
6221        foreach lid $rowids {
6222            if {$lid eq {}} continue
6223            if {[info exists lineend($lid)] && $lineend($lid) > $r} continue
6224            if {$lid eq $id} {
6225                # see if this is the first child of any of its parents
6226                foreach p [lindex $parentlist $r] {
6227                    if {[lsearch -exact $rowids $p] < 0} {
6228                        # make this line extend up to the child
6229                        set lineend($p) [drawlineseg $p $r $er 0]
6230                    }
6231                }
6232            } else {
6233                set lineend($lid) [drawlineseg $lid $r $er 1]
6234            }
6235        }
6236    }
6237}
6238
6239proc undolayout {row} {
6240    global uparrowlen mingaplen downarrowlen
6241    global rowidlist rowisopt rowfinal need_redisplay
6242
6243    set r [expr {$row - ($uparrowlen + $mingaplen + $downarrowlen)}]
6244    if {$r < 0} {
6245        set r 0
6246    }
6247    if {[llength $rowidlist] > $r} {
6248        incr r -1
6249        set rowidlist [lrange $rowidlist 0 $r]
6250        set rowfinal [lrange $rowfinal 0 $r]
6251        set rowisopt [lrange $rowisopt 0 $r]
6252        set need_redisplay 1
6253        run drawvisible
6254    }
6255}
6256
6257proc drawvisible {} {
6258    global canv linespc curview vrowmod selectedline targetrow targetid
6259    global need_redisplay cscroll numcommits
6260
6261    set fs [$canv yview]
6262    set ymax [lindex [$canv cget -scrollregion] 3]
6263    if {$ymax eq {} || $ymax == 0 || $numcommits == 0} return
6264    set f0 [lindex $fs 0]
6265    set f1 [lindex $fs 1]
6266    set y0 [expr {int($f0 * $ymax)}]
6267    set y1 [expr {int($f1 * $ymax)}]
6268
6269    if {[info exists targetid]} {
6270        if {[commitinview $targetid $curview]} {
6271            set r [rowofcommit $targetid]
6272            if {$r != $targetrow} {
6273                # Fix up the scrollregion and change the scrolling position
6274                # now that our target row has moved.
6275                set diff [expr {($r - $targetrow) * $linespc}]
6276                set targetrow $r
6277                setcanvscroll
6278                set ymax [lindex [$canv cget -scrollregion] 3]
6279                incr y0 $diff
6280                incr y1 $diff
6281                set f0 [expr {$y0 / $ymax}]
6282                set f1 [expr {$y1 / $ymax}]
6283                allcanvs yview moveto $f0
6284                $cscroll set $f0 $f1
6285                set need_redisplay 1
6286            }
6287        } else {
6288            unset targetid
6289        }
6290    }
6291
6292    set row [expr {int(($y0 - 3) / $linespc) - 1}]
6293    set endrow [expr {int(($y1 - 3) / $linespc) + 1}]
6294    if {$endrow >= $vrowmod($curview)} {
6295        update_arcrows $curview
6296    }
6297    if {$selectedline ne {} &&
6298        $row <= $selectedline && $selectedline <= $endrow} {
6299        set targetrow $selectedline
6300    } elseif {[info exists targetid]} {
6301        set targetrow [expr {int(($row + $endrow) / 2)}]
6302    }
6303    if {[info exists targetrow]} {
6304        if {$targetrow >= $numcommits} {
6305            set targetrow [expr {$numcommits - 1}]
6306        }
6307        set targetid [commitonrow $targetrow]
6308    }
6309    drawcommits $row $endrow
6310}
6311
6312proc clear_display {} {
6313    global iddrawn linesegs need_redisplay nrows_drawn
6314    global vhighlights fhighlights nhighlights rhighlights
6315    global linehtag linentag linedtag boldids boldnameids
6316
6317    allcanvs delete all
6318    catch {unset iddrawn}
6319    catch {unset linesegs}
6320    catch {unset linehtag}
6321    catch {unset linentag}
6322    catch {unset linedtag}
6323    set boldids {}
6324    set boldnameids {}
6325    catch {unset vhighlights}
6326    catch {unset fhighlights}
6327    catch {unset nhighlights}
6328    catch {unset rhighlights}
6329    set need_redisplay 0
6330    set nrows_drawn 0
6331}
6332
6333proc findcrossings {id} {
6334    global rowidlist parentlist numcommits displayorder
6335
6336    set cross {}
6337    set ccross {}
6338    foreach {s e} [rowranges $id] {
6339        if {$e >= $numcommits} {
6340            set e [expr {$numcommits - 1}]
6341        }
6342        if {$e <= $s} continue
6343        for {set row $e} {[incr row -1] >= $s} {} {
6344            set x [lsearch -exact [lindex $rowidlist $row] $id]
6345            if {$x < 0} break
6346            set olds [lindex $parentlist $row]
6347            set kid [lindex $displayorder $row]
6348            set kidx [lsearch -exact [lindex $rowidlist $row] $kid]
6349            if {$kidx < 0} continue
6350            set nextrow [lindex $rowidlist [expr {$row + 1}]]
6351            foreach p $olds {
6352                set px [lsearch -exact $nextrow $p]
6353                if {$px < 0} continue
6354                if {($kidx < $x && $x < $px) || ($px < $x && $x < $kidx)} {
6355                    if {[lsearch -exact $ccross $p] >= 0} continue
6356                    if {$x == $px + ($kidx < $px? -1: 1)} {
6357                        lappend ccross $p
6358                    } elseif {[lsearch -exact $cross $p] < 0} {
6359                        lappend cross $p
6360                    }
6361                }
6362            }
6363        }
6364    }
6365    return [concat $ccross {{}} $cross]
6366}
6367
6368proc assigncolor {id} {
6369    global colormap colors nextcolor
6370    global parents children children curview
6371
6372    if {[info exists colormap($id)]} return
6373    set ncolors [llength $colors]
6374    if {[info exists children($curview,$id)]} {
6375        set kids $children($curview,$id)
6376    } else {
6377        set kids {}
6378    }
6379    if {[llength $kids] == 1} {
6380        set child [lindex $kids 0]
6381        if {[info exists colormap($child)]
6382            && [llength $parents($curview,$child)] == 1} {
6383            set colormap($id) $colormap($child)
6384            return
6385        }
6386    }
6387    set badcolors {}
6388    set origbad {}
6389    foreach x [findcrossings $id] {
6390        if {$x eq {}} {
6391            # delimiter between corner crossings and other crossings
6392            if {[llength $badcolors] >= $ncolors - 1} break
6393            set origbad $badcolors
6394        }
6395        if {[info exists colormap($x)]
6396            && [lsearch -exact $badcolors $colormap($x)] < 0} {
6397            lappend badcolors $colormap($x)
6398        }
6399    }
6400    if {[llength $badcolors] >= $ncolors} {
6401        set badcolors $origbad
6402    }
6403    set origbad $badcolors
6404    if {[llength $badcolors] < $ncolors - 1} {
6405        foreach child $kids {
6406            if {[info exists colormap($child)]
6407                && [lsearch -exact $badcolors $colormap($child)] < 0} {
6408                lappend badcolors $colormap($child)
6409            }
6410            foreach p $parents($curview,$child) {
6411                if {[info exists colormap($p)]
6412                    && [lsearch -exact $badcolors $colormap($p)] < 0} {
6413                    lappend badcolors $colormap($p)
6414                }
6415            }
6416        }
6417        if {[llength $badcolors] >= $ncolors} {
6418            set badcolors $origbad
6419        }
6420    }
6421    for {set i 0} {$i <= $ncolors} {incr i} {
6422        set c [lindex $colors $nextcolor]
6423        if {[incr nextcolor] >= $ncolors} {
6424            set nextcolor 0
6425        }
6426        if {[lsearch -exact $badcolors $c]} break
6427    }
6428    set colormap($id) $c
6429}
6430
6431proc bindline {t id} {
6432    global canv
6433
6434    $canv bind $t <Enter> "lineenter %x %y $id"
6435    $canv bind $t <Motion> "linemotion %x %y $id"
6436    $canv bind $t <Leave> "lineleave $id"
6437    $canv bind $t <Button-1> "lineclick %x %y $id 1"
6438}
6439
6440proc graph_pane_width {} {
6441    global use_ttk
6442
6443    if {$use_ttk} {
6444        set g [.tf.histframe.pwclist sashpos 0]
6445    } else {
6446        set g [.tf.histframe.pwclist sash coord 0]
6447    }
6448    return [lindex $g 0]
6449}
6450
6451proc totalwidth {l font extra} {
6452    set tot 0
6453    foreach str $l {
6454        set tot [expr {$tot + [font measure $font $str] + $extra}]
6455    }
6456    return $tot
6457}
6458
6459proc drawtags {id x xt y1} {
6460    global idtags idheads idotherrefs mainhead
6461    global linespc lthickness
6462    global canv rowtextx curview fgcolor bgcolor ctxbut
6463    global headbgcolor headfgcolor headoutlinecolor remotebgcolor
6464    global tagbgcolor tagfgcolor tagoutlinecolor
6465    global reflinecolor
6466
6467    set marks {}
6468    set ntags 0
6469    set nheads 0
6470    set singletag 0
6471    set maxtags 3
6472    set maxtagpct 25
6473    set maxwidth [expr {[graph_pane_width] * $maxtagpct / 100}]
6474    set delta [expr {int(0.5 * ($linespc - $lthickness))}]
6475    set extra [expr {$delta + $lthickness + $linespc}]
6476
6477    if {[info exists idtags($id)]} {
6478        set marks $idtags($id)
6479        set ntags [llength $marks]
6480        if {$ntags > $maxtags ||
6481            [totalwidth $marks mainfont $extra] > $maxwidth} {
6482            # show just a single "n tags..." tag
6483            set singletag 1
6484            if {$ntags == 1} {
6485                set marks [list "tag..."]
6486            } else {
6487                set marks [list [format "%d tags..." $ntags]]
6488            }
6489            set ntags 1
6490        }
6491    }
6492    if {[info exists idheads($id)]} {
6493        set marks [concat $marks $idheads($id)]
6494        set nheads [llength $idheads($id)]
6495    }
6496    if {[info exists idotherrefs($id)]} {
6497        set marks [concat $marks $idotherrefs($id)]
6498    }
6499    if {$marks eq {}} {
6500        return $xt
6501    }
6502
6503    set yt [expr {$y1 - 0.5 * $linespc}]
6504    set yb [expr {$yt + $linespc - 1}]
6505    set xvals {}
6506    set wvals {}
6507    set i -1
6508    foreach tag $marks {
6509        incr i
6510        if {$i >= $ntags && $i < $ntags + $nheads && $tag eq $mainhead} {
6511            set wid [font measure mainfontbold $tag]
6512        } else {
6513            set wid [font measure mainfont $tag]
6514        }
6515        lappend xvals $xt
6516        lappend wvals $wid
6517        set xt [expr {$xt + $wid + $extra}]
6518    }
6519    set t [$canv create line $x $y1 [lindex $xvals end] $y1 \
6520               -width $lthickness -fill $reflinecolor -tags tag.$id]
6521    $canv lower $t
6522    foreach tag $marks x $xvals wid $wvals {
6523        set tag_quoted [string map {% %%} $tag]
6524        set xl [expr {$x + $delta}]
6525        set xr [expr {$x + $delta + $wid + $lthickness}]
6526        set font mainfont
6527        if {[incr ntags -1] >= 0} {
6528            # draw a tag
6529            set t [$canv create polygon $x [expr {$yt + $delta}] $xl $yt \
6530                       $xr $yt $xr $yb $xl $yb $x [expr {$yb - $delta}] \
6531                       -width 1 -outline $tagoutlinecolor -fill $tagbgcolor \
6532                       -tags tag.$id]
6533            if {$singletag} {
6534                set tagclick [list showtags $id 1]
6535            } else {
6536                set tagclick [list showtag $tag_quoted 1]
6537            }
6538            $canv bind $t <1> $tagclick
6539            set rowtextx([rowofcommit $id]) [expr {$xr + $linespc}]
6540        } else {
6541            # draw a head or other ref
6542            if {[incr nheads -1] >= 0} {
6543                set col $headbgcolor
6544                if {$tag eq $mainhead} {
6545                    set font mainfontbold
6546                }
6547            } else {
6548                set col "#ddddff"
6549            }
6550            set xl [expr {$xl - $delta/2}]
6551            $canv create polygon $x $yt $xr $yt $xr $yb $x $yb \
6552                -width 1 -outline black -fill $col -tags tag.$id
6553            if {[regexp {^(remotes/.*/|remotes/)} $tag match remoteprefix]} {
6554                set rwid [font measure mainfont $remoteprefix]
6555                set xi [expr {$x + 1}]
6556                set yti [expr {$yt + 1}]
6557                set xri [expr {$x + $rwid}]
6558                $canv create polygon $xi $yti $xri $yti $xri $yb $xi $yb \
6559                        -width 0 -fill $remotebgcolor -tags tag.$id
6560            }
6561        }
6562        set t [$canv create text $xl $y1 -anchor w -text $tag -fill $headfgcolor \
6563                   -font $font -tags [list tag.$id text]]
6564        if {$ntags >= 0} {
6565            $canv bind $t <1> $tagclick
6566        } elseif {$nheads >= 0} {
6567            $canv bind $t $ctxbut [list headmenu %X %Y $id $tag_quoted]
6568        }
6569    }
6570    return $xt
6571}
6572
6573proc drawnotesign {xt y} {
6574    global linespc canv fgcolor
6575
6576    set orad [expr {$linespc / 3}]
6577    set t [$canv create rectangle [expr {$xt - $orad}] [expr {$y - $orad}] \
6578               [expr {$xt + $orad - 1}] [expr {$y + $orad - 1}] \
6579               -fill yellow -outline $fgcolor -width 1 -tags circle]
6580    set xt [expr {$xt + $orad * 3}]
6581    return $xt
6582}
6583
6584proc xcoord {i level ln} {
6585    global canvx0 xspc1 xspc2
6586
6587    set x [expr {$canvx0 + $i * $xspc1($ln)}]
6588    if {$i > 0 && $i == $level} {
6589        set x [expr {$x + 0.5 * ($xspc2 - $xspc1($ln))}]
6590    } elseif {$i > $level} {
6591        set x [expr {$x + $xspc2 - $xspc1($ln)}]
6592    }
6593    return $x
6594}
6595
6596proc show_status {msg} {
6597    global canv fgcolor
6598
6599    clear_display
6600    $canv create text 3 3 -anchor nw -text $msg -font mainfont \
6601        -tags text -fill $fgcolor
6602}
6603
6604# Don't change the text pane cursor if it is currently the hand cursor,
6605# showing that we are over a sha1 ID link.
6606proc settextcursor {c} {
6607    global ctext curtextcursor
6608
6609    if {[$ctext cget -cursor] == $curtextcursor} {
6610        $ctext config -cursor $c
6611    }
6612    set curtextcursor $c
6613}
6614
6615proc nowbusy {what {name {}}} {
6616    global isbusy busyname statusw
6617
6618    if {[array names isbusy] eq {}} {
6619        . config -cursor watch
6620        settextcursor watch
6621    }
6622    set isbusy($what) 1
6623    set busyname($what) $name
6624    if {$name ne {}} {
6625        $statusw conf -text $name
6626    }
6627}
6628
6629proc notbusy {what} {
6630    global isbusy maincursor textcursor busyname statusw
6631
6632    catch {
6633        unset isbusy($what)
6634        if {$busyname($what) ne {} &&
6635            [$statusw cget -text] eq $busyname($what)} {
6636            $statusw conf -text {}
6637        }
6638    }
6639    if {[array names isbusy] eq {}} {
6640        . config -cursor $maincursor
6641        settextcursor $textcursor
6642    }
6643}
6644
6645proc findmatches {f} {
6646    global findtype findstring
6647    if {$findtype == [mc "Regexp"]} {
6648        set matches [regexp -indices -all -inline $findstring $f]
6649    } else {
6650        set fs $findstring
6651        if {$findtype == [mc "IgnCase"]} {
6652            set f [string tolower $f]
6653            set fs [string tolower $fs]
6654        }
6655        set matches {}
6656        set i 0
6657        set l [string length $fs]
6658        while {[set j [string first $fs $f $i]] >= 0} {
6659            lappend matches [list $j [expr {$j+$l-1}]]
6660            set i [expr {$j + $l}]
6661        }
6662    }
6663    return $matches
6664}
6665
6666proc dofind {{dirn 1} {wrap 1}} {
6667    global findstring findstartline findcurline selectedline numcommits
6668    global gdttype filehighlight fh_serial find_dirn findallowwrap
6669
6670    if {[info exists find_dirn]} {
6671        if {$find_dirn == $dirn} return
6672        stopfinding
6673    }
6674    focus .
6675    if {$findstring eq {} || $numcommits == 0} return
6676    if {$selectedline eq {}} {
6677        set findstartline [lindex [visiblerows] [expr {$dirn < 0}]]
6678    } else {
6679        set findstartline $selectedline
6680    }
6681    set findcurline $findstartline
6682    nowbusy finding [mc "Searching"]
6683    if {$gdttype ne [mc "containing:"] && ![info exists filehighlight]} {
6684        after cancel do_file_hl $fh_serial
6685        do_file_hl $fh_serial
6686    }
6687    set find_dirn $dirn
6688    set findallowwrap $wrap
6689    run findmore
6690}
6691
6692proc stopfinding {} {
6693    global find_dirn findcurline fprogcoord
6694
6695    if {[info exists find_dirn]} {
6696        unset find_dirn
6697        unset findcurline
6698        notbusy finding
6699        set fprogcoord 0
6700        adjustprogress
6701    }
6702    stopblaming
6703}
6704
6705proc findmore {} {
6706    global commitdata commitinfo numcommits findpattern findloc
6707    global findstartline findcurline findallowwrap
6708    global find_dirn gdttype fhighlights fprogcoord
6709    global curview varcorder vrownum varccommits vrowmod
6710
6711    if {![info exists find_dirn]} {
6712        return 0
6713    }
6714    set fldtypes [list [mc "Headline"] [mc "Author"] "" [mc "Committer"] "" [mc "Comments"]]
6715    set l $findcurline
6716    set moretodo 0
6717    if {$find_dirn > 0} {
6718        incr l
6719        if {$l >= $numcommits} {
6720            set l 0
6721        }
6722        if {$l <= $findstartline} {
6723            set lim [expr {$findstartline + 1}]
6724        } else {
6725            set lim $numcommits
6726            set moretodo $findallowwrap
6727        }
6728    } else {
6729        if {$l == 0} {
6730            set l $numcommits
6731        }
6732        incr l -1
6733        if {$l >= $findstartline} {
6734            set lim [expr {$findstartline - 1}]
6735        } else {
6736            set lim -1
6737            set moretodo $findallowwrap
6738        }
6739    }
6740    set n [expr {($lim - $l) * $find_dirn}]
6741    if {$n > 500} {
6742        set n 500
6743        set moretodo 1
6744    }
6745    if {$l + ($find_dirn > 0? $n: 1) > $vrowmod($curview)} {
6746        update_arcrows $curview
6747    }
6748    set found 0
6749    set domore 1
6750    set ai [bsearch $vrownum($curview) $l]
6751    set a [lindex $varcorder($curview) $ai]
6752    set arow [lindex $vrownum($curview) $ai]
6753    set ids [lindex $varccommits($curview,$a)]
6754    set arowend [expr {$arow + [llength $ids]}]
6755    if {$gdttype eq [mc "containing:"]} {
6756        for {} {$n > 0} {incr n -1; incr l $find_dirn} {
6757            if {$l < $arow || $l >= $arowend} {
6758                incr ai $find_dirn
6759                set a [lindex $varcorder($curview) $ai]
6760                set arow [lindex $vrownum($curview) $ai]
6761                set ids [lindex $varccommits($curview,$a)]
6762                set arowend [expr {$arow + [llength $ids]}]
6763            }
6764            set id [lindex $ids [expr {$l - $arow}]]
6765            # shouldn't happen unless git log doesn't give all the commits...
6766            if {![info exists commitdata($id)] ||
6767                ![doesmatch $commitdata($id)]} {
6768                continue
6769            }
6770            if {![info exists commitinfo($id)]} {
6771                getcommit $id
6772            }
6773            set info $commitinfo($id)
6774            foreach f $info ty $fldtypes {
6775                if {$ty eq ""} continue
6776                if {($findloc eq [mc "All fields"] || $findloc eq $ty) &&
6777                    [doesmatch $f]} {
6778                    set found 1
6779                    break
6780                }
6781            }
6782            if {$found} break
6783        }
6784    } else {
6785        for {} {$n > 0} {incr n -1; incr l $find_dirn} {
6786            if {$l < $arow || $l >= $arowend} {
6787                incr ai $find_dirn
6788                set a [lindex $varcorder($curview) $ai]
6789                set arow [lindex $vrownum($curview) $ai]
6790                set ids [lindex $varccommits($curview,$a)]
6791                set arowend [expr {$arow + [llength $ids]}]
6792            }
6793            set id [lindex $ids [expr {$l - $arow}]]
6794            if {![info exists fhighlights($id)]} {
6795                # this sets fhighlights($id) to -1
6796                askfilehighlight $l $id
6797            }
6798            if {$fhighlights($id) > 0} {
6799                set found $domore
6800                break
6801            }
6802            if {$fhighlights($id) < 0} {
6803                if {$domore} {
6804                    set domore 0
6805                    set findcurline [expr {$l - $find_dirn}]
6806                }
6807            }
6808        }
6809    }
6810    if {$found || ($domore && !$moretodo)} {
6811        unset findcurline
6812        unset find_dirn
6813        notbusy finding
6814        set fprogcoord 0
6815        adjustprogress
6816        if {$found} {
6817            findselectline $l
6818        } else {
6819            bell
6820        }
6821        return 0
6822    }
6823    if {!$domore} {
6824        flushhighlights
6825    } else {
6826        set findcurline [expr {$l - $find_dirn}]
6827    }
6828    set n [expr {($findcurline - $findstartline) * $find_dirn - 1}]
6829    if {$n < 0} {
6830        incr n $numcommits
6831    }
6832    set fprogcoord [expr {$n * 1.0 / $numcommits}]
6833    adjustprogress
6834    return $domore
6835}
6836
6837proc findselectline {l} {
6838    global findloc commentend ctext findcurline markingmatches gdttype
6839
6840    set markingmatches [expr {$gdttype eq [mc "containing:"]}]
6841    set findcurline $l
6842    selectline $l 1
6843    if {$markingmatches &&
6844        ($findloc eq [mc "All fields"] || $findloc eq [mc "Comments"])} {
6845        # highlight the matches in the comments
6846        set f [$ctext get 1.0 $commentend]
6847        set matches [findmatches $f]
6848        foreach match $matches {
6849            set start [lindex $match 0]
6850            set end [expr {[lindex $match 1] + 1}]
6851            $ctext tag add found "1.0 + $start c" "1.0 + $end c"
6852        }
6853    }
6854    drawvisible
6855}
6856
6857# mark the bits of a headline or author that match a find string
6858proc markmatches {canv l str tag matches font row} {
6859    global selectedline
6860
6861    set bbox [$canv bbox $tag]
6862    set x0 [lindex $bbox 0]
6863    set y0 [lindex $bbox 1]
6864    set y1 [lindex $bbox 3]
6865    foreach match $matches {
6866        set start [lindex $match 0]
6867        set end [lindex $match 1]
6868        if {$start > $end} continue
6869        set xoff [font measure $font [string range $str 0 [expr {$start-1}]]]
6870        set xlen [font measure $font [string range $str 0 [expr {$end}]]]
6871        set t [$canv create rect [expr {$x0+$xoff}] $y0 \
6872                   [expr {$x0+$xlen+2}] $y1 \
6873                   -outline {} -tags [list match$l matches] -fill yellow]
6874        $canv lower $t
6875        if {$row == $selectedline} {
6876            $canv raise $t secsel
6877        }
6878    }
6879}
6880
6881proc unmarkmatches {} {
6882    global markingmatches
6883
6884    allcanvs delete matches
6885    set markingmatches 0
6886    stopfinding
6887}
6888
6889proc selcanvline {w x y} {
6890    global canv canvy0 ctext linespc
6891    global rowtextx
6892    set ymax [lindex [$canv cget -scrollregion] 3]
6893    if {$ymax == {}} return
6894    set yfrac [lindex [$canv yview] 0]
6895    set y [expr {$y + $yfrac * $ymax}]
6896    set l [expr {int(($y - $canvy0) / $linespc + 0.5)}]
6897    if {$l < 0} {
6898        set l 0
6899    }
6900    if {$w eq $canv} {
6901        set xmax [lindex [$canv cget -scrollregion] 2]
6902        set xleft [expr {[lindex [$canv xview] 0] * $xmax}]
6903        if {![info exists rowtextx($l)] || $xleft + $x < $rowtextx($l)} return
6904    }
6905    unmarkmatches
6906    selectline $l 1
6907}
6908
6909proc commit_descriptor {p} {
6910    global commitinfo
6911    if {![info exists commitinfo($p)]} {
6912        getcommit $p
6913    }
6914    set l "..."
6915    if {[llength $commitinfo($p)] > 1} {
6916        set l [lindex $commitinfo($p) 0]
6917    }
6918    return "$p ($l)\n"
6919}
6920
6921# append some text to the ctext widget, and make any SHA1 ID
6922# that we know about be a clickable link.
6923proc appendwithlinks {text tags} {
6924    global ctext linknum curview
6925
6926    set start [$ctext index "end - 1c"]
6927    $ctext insert end $text $tags
6928    set links [regexp -indices -all -inline {(?:\m|-g)[0-9a-f]{6,40}\M} $text]
6929    foreach l $links {
6930        set s [lindex $l 0]
6931        set e [lindex $l 1]
6932        set linkid [string range $text $s $e]
6933        incr e
6934        $ctext tag delete link$linknum
6935        $ctext tag add link$linknum "$start + $s c" "$start + $e c"
6936        setlink $linkid link$linknum
6937        incr linknum
6938    }
6939}
6940
6941proc setlink {id lk} {
6942    global curview ctext pendinglinks
6943    global linkfgcolor
6944
6945    if {[string range $id 0 1] eq "-g"} {
6946      set id [string range $id 2 end]
6947    }
6948
6949    set known 0
6950    if {[string length $id] < 40} {
6951        set matches [longid $id]
6952        if {[llength $matches] > 0} {
6953            if {[llength $matches] > 1} return
6954            set known 1
6955            set id [lindex $matches 0]
6956        }
6957    } else {
6958        set known [commitinview $id $curview]
6959    }
6960    if {$known} {
6961        $ctext tag conf $lk -foreground $linkfgcolor -underline 1
6962        $ctext tag bind $lk <1> [list selbyid $id]
6963        $ctext tag bind $lk <Enter> {linkcursor %W 1}
6964        $ctext tag bind $lk <Leave> {linkcursor %W -1}
6965    } else {
6966        lappend pendinglinks($id) $lk
6967        interestedin $id {makelink %P}
6968    }
6969}
6970
6971proc appendshortlink {id {pre {}} {post {}}} {
6972    global ctext linknum
6973
6974    $ctext insert end $pre
6975    $ctext tag delete link$linknum
6976    $ctext insert end [string range $id 0 7] link$linknum
6977    $ctext insert end $post
6978    setlink $id link$linknum
6979    incr linknum
6980}
6981
6982proc makelink {id} {
6983    global pendinglinks
6984
6985    if {![info exists pendinglinks($id)]} return
6986    foreach lk $pendinglinks($id) {
6987        setlink $id $lk
6988    }
6989    unset pendinglinks($id)
6990}
6991
6992proc linkcursor {w inc} {
6993    global linkentercount curtextcursor
6994
6995    if {[incr linkentercount $inc] > 0} {
6996        $w configure -cursor hand2
6997    } else {
6998        $w configure -cursor $curtextcursor
6999        if {$linkentercount < 0} {
7000            set linkentercount 0
7001        }
7002    }
7003}
7004
7005proc viewnextline {dir} {
7006    global canv linespc
7007
7008    $canv delete hover
7009    set ymax [lindex [$canv cget -scrollregion] 3]
7010    set wnow [$canv yview]
7011    set wtop [expr {[lindex $wnow 0] * $ymax}]
7012    set newtop [expr {$wtop + $dir * $linespc}]
7013    if {$newtop < 0} {
7014        set newtop 0
7015    } elseif {$newtop > $ymax} {
7016        set newtop $ymax
7017    }
7018    allcanvs yview moveto [expr {$newtop * 1.0 / $ymax}]
7019}
7020
7021# add a list of tag or branch names at position pos
7022# returns the number of names inserted
7023proc appendrefs {pos ids var} {
7024    global ctext linknum curview $var maxrefs mainheadid
7025
7026    if {[catch {$ctext index $pos}]} {
7027        return 0
7028    }
7029    $ctext conf -state normal
7030    $ctext delete $pos "$pos lineend"
7031    set tags {}
7032    foreach id $ids {
7033        foreach tag [set $var\($id\)] {
7034            lappend tags [list $tag $id]
7035        }
7036    }
7037
7038    set sep {}
7039    set tags [lsort -index 0 -decreasing $tags]
7040    set nutags 0
7041
7042    if {[llength $tags] > $maxrefs} {
7043        # If we are displaying heads, and there are too many,
7044        # see if there are some important heads to display.
7045        # Currently this means "master" and the current head.
7046        set itags {}
7047        if {$var eq "idheads"} {
7048            set utags {}
7049            foreach ti $tags {
7050                set hname [lindex $ti 0]
7051                set id [lindex $ti 1]
7052                if {($hname eq "master" || $id eq $mainheadid) &&
7053                    [llength $itags] < $maxrefs} {
7054                    lappend itags $ti
7055                } else {
7056                    lappend utags $ti
7057                }
7058            }
7059            set tags $utags
7060        }
7061        if {$itags ne {}} {
7062            set str [mc "and many more"]
7063            set sep " "
7064        } else {
7065            set str [mc "many"]
7066        }
7067        $ctext insert $pos "$str ([llength $tags])"
7068        set nutags [llength $tags]
7069        set tags $itags
7070    }
7071
7072    foreach ti $tags {
7073        set id [lindex $ti 1]
7074        set lk link$linknum
7075        incr linknum
7076        $ctext tag delete $lk
7077        $ctext insert $pos $sep
7078        $ctext insert $pos [lindex $ti 0] $lk
7079        setlink $id $lk
7080        set sep ", "
7081    }
7082    $ctext tag add wwrap "$pos linestart" "$pos lineend"
7083    $ctext conf -state disabled
7084    return [expr {[llength $tags] + $nutags}]
7085}
7086
7087# called when we have finished computing the nearby tags
7088proc dispneartags {delay} {
7089    global selectedline currentid showneartags tagphase
7090
7091    if {$selectedline eq {} || !$showneartags} return
7092    after cancel dispnexttag
7093    if {$delay} {
7094        after 200 dispnexttag
7095        set tagphase -1
7096    } else {
7097        after idle dispnexttag
7098        set tagphase 0
7099    }
7100}
7101
7102proc dispnexttag {} {
7103    global selectedline currentid showneartags tagphase ctext
7104
7105    if {$selectedline eq {} || !$showneartags} return
7106    switch -- $tagphase {
7107        0 {
7108            set dtags [desctags $currentid]
7109            if {$dtags ne {}} {
7110                appendrefs precedes $dtags idtags
7111            }
7112        }
7113        1 {
7114            set atags [anctags $currentid]
7115            if {$atags ne {}} {
7116                appendrefs follows $atags idtags
7117            }
7118        }
7119        2 {
7120            set dheads [descheads $currentid]
7121            if {$dheads ne {}} {
7122                if {[appendrefs branch $dheads idheads] > 1
7123                    && [$ctext get "branch -3c"] eq "h"} {
7124                    # turn "Branch" into "Branches"
7125                    $ctext conf -state normal
7126                    $ctext insert "branch -2c" "es"
7127                    $ctext conf -state disabled
7128                }
7129            }
7130        }
7131    }
7132    if {[incr tagphase] <= 2} {
7133        after idle dispnexttag
7134    }
7135}
7136
7137proc make_secsel {id} {
7138    global linehtag linentag linedtag canv canv2 canv3
7139
7140    if {![info exists linehtag($id)]} return
7141    $canv delete secsel
7142    set t [eval $canv create rect [$canv bbox $linehtag($id)] -outline {{}} \
7143               -tags secsel -fill [$canv cget -selectbackground]]
7144    $canv lower $t
7145    $canv2 delete secsel
7146    set t [eval $canv2 create rect [$canv2 bbox $linentag($id)] -outline {{}} \
7147               -tags secsel -fill [$canv2 cget -selectbackground]]
7148    $canv2 lower $t
7149    $canv3 delete secsel
7150    set t [eval $canv3 create rect [$canv3 bbox $linedtag($id)] -outline {{}} \
7151               -tags secsel -fill [$canv3 cget -selectbackground]]
7152    $canv3 lower $t
7153}
7154
7155proc make_idmark {id} {
7156    global linehtag canv fgcolor
7157
7158    if {![info exists linehtag($id)]} return
7159    $canv delete markid
7160    set t [eval $canv create rect [$canv bbox $linehtag($id)] \
7161               -tags markid -outline $fgcolor]
7162    $canv raise $t
7163}
7164
7165proc selectline {l isnew {desired_loc {}} {switch_to_patch 0}} {
7166    global canv ctext commitinfo selectedline
7167    global canvy0 linespc parents children curview
7168    global currentid sha1entry
7169    global commentend idtags linknum
7170    global mergemax numcommits pending_select
7171    global cmitmode showneartags allcommits
7172    global targetrow targetid lastscrollrows
7173    global autoselect autosellen jump_to_here
7174    global vinlinediff
7175
7176    catch {unset pending_select}
7177    $canv delete hover
7178    normalline
7179    unsel_reflist
7180    stopfinding
7181    if {$l < 0 || $l >= $numcommits} return
7182    set id [commitonrow $l]
7183    set targetid $id
7184    set targetrow $l
7185    set selectedline $l
7186    set currentid $id
7187    if {$lastscrollrows < $numcommits} {
7188        setcanvscroll
7189    }
7190
7191    if {$cmitmode ne "patch" && $switch_to_patch} {
7192        set cmitmode "patch"
7193    }
7194
7195    set y [expr {$canvy0 + $l * $linespc}]
7196    set ymax [lindex [$canv cget -scrollregion] 3]
7197    set ytop [expr {$y - $linespc - 1}]
7198    set ybot [expr {$y + $linespc + 1}]
7199    set wnow [$canv yview]
7200    set wtop [expr {[lindex $wnow 0] * $ymax}]
7201    set wbot [expr {[lindex $wnow 1] * $ymax}]
7202    set wh [expr {$wbot - $wtop}]
7203    set newtop $wtop
7204    if {$ytop < $wtop} {
7205        if {$ybot < $wtop} {
7206            set newtop [expr {$y - $wh / 2.0}]
7207        } else {
7208            set newtop $ytop
7209            if {$newtop > $wtop - $linespc} {
7210                set newtop [expr {$wtop - $linespc}]
7211            }
7212        }
7213    } elseif {$ybot > $wbot} {
7214        if {$ytop > $wbot} {
7215            set newtop [expr {$y - $wh / 2.0}]
7216        } else {
7217            set newtop [expr {$ybot - $wh}]
7218            if {$newtop < $wtop + $linespc} {
7219                set newtop [expr {$wtop + $linespc}]
7220            }
7221        }
7222    }
7223    if {$newtop != $wtop} {
7224        if {$newtop < 0} {
7225            set newtop 0
7226        }
7227        allcanvs yview moveto [expr {$newtop * 1.0 / $ymax}]
7228        drawvisible
7229    }
7230
7231    make_secsel $id
7232
7233    if {$isnew} {
7234        addtohistory [list selbyid $id 0] savecmitpos
7235    }
7236
7237    $sha1entry delete 0 end
7238    $sha1entry insert 0 $id
7239    if {$autoselect} {
7240        $sha1entry selection range 0 $autosellen
7241    }
7242    rhighlight_sel $id
7243
7244    $ctext conf -state normal
7245    clear_ctext
7246    set linknum 0
7247    if {![info exists commitinfo($id)]} {
7248        getcommit $id
7249    }
7250    set info $commitinfo($id)
7251    set date [formatdate [lindex $info 2]]
7252    $ctext insert end "[mc "Author"]: [lindex $info 1]  $date\n"
7253    set date [formatdate [lindex $info 4]]
7254    $ctext insert end "[mc "Committer"]: [lindex $info 3]  $date\n"
7255    if {[info exists idtags($id)]} {
7256        $ctext insert end [mc "Tags:"]
7257        foreach tag $idtags($id) {
7258            $ctext insert end " $tag"
7259        }
7260        $ctext insert end "\n"
7261    }
7262
7263    set headers {}
7264    set olds $parents($curview,$id)
7265    if {[llength $olds] > 1} {
7266        set np 0
7267        foreach p $olds {
7268            if {$np >= $mergemax} {
7269                set tag mmax
7270            } else {
7271                set tag m$np
7272            }
7273            $ctext insert end "[mc "Parent"]: " $tag
7274            appendwithlinks [commit_descriptor $p] {}
7275            incr np
7276        }
7277    } else {
7278        foreach p $olds {
7279            append headers "[mc "Parent"]: [commit_descriptor $p]"
7280        }
7281    }
7282
7283    foreach c $children($curview,$id) {
7284        append headers "[mc "Child"]:  [commit_descriptor $c]"
7285    }
7286
7287    # make anything that looks like a SHA1 ID be a clickable link
7288    appendwithlinks $headers {}
7289    if {$showneartags} {
7290        if {![info exists allcommits]} {
7291            getallcommits
7292        }
7293        $ctext insert end "[mc "Branch"]: "
7294        $ctext mark set branch "end -1c"
7295        $ctext mark gravity branch left
7296        $ctext insert end "\n[mc "Follows"]: "
7297        $ctext mark set follows "end -1c"
7298        $ctext mark gravity follows left
7299        $ctext insert end "\n[mc "Precedes"]: "
7300        $ctext mark set precedes "end -1c"
7301        $ctext mark gravity precedes left
7302        $ctext insert end "\n"
7303        dispneartags 1
7304    }
7305    $ctext insert end "\n"
7306    set comment [lindex $info 5]
7307    if {[string first "\r" $comment] >= 0} {
7308        set comment [string map {"\r" "\n    "} $comment]
7309    }
7310    appendwithlinks $comment {comment}
7311
7312    $ctext tag remove found 1.0 end
7313    $ctext conf -state disabled
7314    set commentend [$ctext index "end - 1c"]
7315
7316    set jump_to_here $desired_loc
7317    init_flist [mc "Comments"]
7318    if {$cmitmode eq "tree"} {
7319        gettree $id
7320    } elseif {$vinlinediff($curview) == 1} {
7321        showinlinediff $id
7322    } elseif {[llength $olds] <= 1} {
7323        startdiff $id
7324    } else {
7325        mergediff $id
7326    }
7327}
7328
7329proc selfirstline {} {
7330    unmarkmatches
7331    selectline 0 1
7332}
7333
7334proc sellastline {} {
7335    global numcommits
7336    unmarkmatches
7337    set l [expr {$numcommits - 1}]
7338    selectline $l 1
7339}
7340
7341proc selnextline {dir} {
7342    global selectedline
7343    focus .
7344    if {$selectedline eq {}} return
7345    set l [expr {$selectedline + $dir}]
7346    unmarkmatches
7347    selectline $l 1
7348}
7349
7350proc selnextpage {dir} {
7351    global canv linespc selectedline numcommits
7352
7353    set lpp [expr {([winfo height $canv] - 2) / $linespc}]
7354    if {$lpp < 1} {
7355        set lpp 1
7356    }
7357    allcanvs yview scroll [expr {$dir * $lpp}] units
7358    drawvisible
7359    if {$selectedline eq {}} return
7360    set l [expr {$selectedline + $dir * $lpp}]
7361    if {$l < 0} {
7362        set l 0
7363    } elseif {$l >= $numcommits} {
7364        set l [expr $numcommits - 1]
7365    }
7366    unmarkmatches
7367    selectline $l 1
7368}
7369
7370proc unselectline {} {
7371    global selectedline currentid
7372
7373    set selectedline {}
7374    catch {unset currentid}
7375    allcanvs delete secsel
7376    rhighlight_none
7377}
7378
7379proc reselectline {} {
7380    global selectedline
7381
7382    if {$selectedline ne {}} {
7383        selectline $selectedline 0
7384    }
7385}
7386
7387proc addtohistory {cmd {saveproc {}}} {
7388    global history historyindex curview
7389
7390    unset_posvars
7391    save_position
7392    set elt [list $curview $cmd $saveproc {}]
7393    if {$historyindex > 0
7394        && [lindex $history [expr {$historyindex - 1}]] == $elt} {
7395        return
7396    }
7397
7398    if {$historyindex < [llength $history]} {
7399        set history [lreplace $history $historyindex end $elt]
7400    } else {
7401        lappend history $elt
7402    }
7403    incr historyindex
7404    if {$historyindex > 1} {
7405        .tf.bar.leftbut conf -state normal
7406    } else {
7407        .tf.bar.leftbut conf -state disabled
7408    }
7409    .tf.bar.rightbut conf -state disabled
7410}
7411
7412# save the scrolling position of the diff display pane
7413proc save_position {} {
7414    global historyindex history
7415
7416    if {$historyindex < 1} return
7417    set hi [expr {$historyindex - 1}]
7418    set fn [lindex $history $hi 2]
7419    if {$fn ne {}} {
7420        lset history $hi 3 [eval $fn]
7421    }
7422}
7423
7424proc unset_posvars {} {
7425    global last_posvars
7426
7427    if {[info exists last_posvars]} {
7428        foreach {var val} $last_posvars {
7429            global $var
7430            catch {unset $var}
7431        }
7432        unset last_posvars
7433    }
7434}
7435
7436proc godo {elt} {
7437    global curview last_posvars
7438
7439    set view [lindex $elt 0]
7440    set cmd [lindex $elt 1]
7441    set pv [lindex $elt 3]
7442    if {$curview != $view} {
7443        showview $view
7444    }
7445    unset_posvars
7446    foreach {var val} $pv {
7447        global $var
7448        set $var $val
7449    }
7450    set last_posvars $pv
7451    eval $cmd
7452}
7453
7454proc goback {} {
7455    global history historyindex
7456    focus .
7457
7458    if {$historyindex > 1} {
7459        save_position
7460        incr historyindex -1
7461        godo [lindex $history [expr {$historyindex - 1}]]
7462        .tf.bar.rightbut conf -state normal
7463    }
7464    if {$historyindex <= 1} {
7465        .tf.bar.leftbut conf -state disabled
7466    }
7467}
7468
7469proc goforw {} {
7470    global history historyindex
7471    focus .
7472
7473    if {$historyindex < [llength $history]} {
7474        save_position
7475        set cmd [lindex $history $historyindex]
7476        incr historyindex
7477        godo $cmd
7478        .tf.bar.leftbut conf -state normal
7479    }
7480    if {$historyindex >= [llength $history]} {
7481        .tf.bar.rightbut conf -state disabled
7482    }
7483}
7484
7485proc gettree {id} {
7486    global treefilelist treeidlist diffids diffmergeid treepending
7487    global nullid nullid2
7488
7489    set diffids $id
7490    catch {unset diffmergeid}
7491    if {![info exists treefilelist($id)]} {
7492        if {![info exists treepending]} {
7493            if {$id eq $nullid} {
7494                set cmd [list | git ls-files]
7495            } elseif {$id eq $nullid2} {
7496                set cmd [list | git ls-files --stage -t]
7497            } else {
7498                set cmd [list | git ls-tree -r $id]
7499            }
7500            if {[catch {set gtf [open $cmd r]}]} {
7501                return
7502            }
7503            set treepending $id
7504            set treefilelist($id) {}
7505            set treeidlist($id) {}
7506            fconfigure $gtf -blocking 0 -encoding binary
7507            filerun $gtf [list gettreeline $gtf $id]
7508        }
7509    } else {
7510        setfilelist $id
7511    }
7512}
7513
7514proc gettreeline {gtf id} {
7515    global treefilelist treeidlist treepending cmitmode diffids nullid nullid2
7516
7517    set nl 0
7518    while {[incr nl] <= 1000 && [gets $gtf line] >= 0} {
7519        if {$diffids eq $nullid} {
7520            set fname $line
7521        } else {
7522            set i [string first "\t" $line]
7523            if {$i < 0} continue
7524            set fname [string range $line [expr {$i+1}] end]
7525            set line [string range $line 0 [expr {$i-1}]]
7526            if {$diffids ne $nullid2 && [lindex $line 1] ne "blob"} continue
7527            set sha1 [lindex $line 2]
7528            lappend treeidlist($id) $sha1
7529        }
7530        if {[string index $fname 0] eq "\""} {
7531            set fname [lindex $fname 0]
7532        }
7533        set fname [encoding convertfrom $fname]
7534        lappend treefilelist($id) $fname
7535    }
7536    if {![eof $gtf]} {
7537        return [expr {$nl >= 1000? 2: 1}]
7538    }
7539    close $gtf
7540    unset treepending
7541    if {$cmitmode ne "tree"} {
7542        if {![info exists diffmergeid]} {
7543            gettreediffs $diffids
7544        }
7545    } elseif {$id ne $diffids} {
7546        gettree $diffids
7547    } else {
7548        setfilelist $id
7549    }
7550    return 0
7551}
7552
7553proc showfile {f} {
7554    global treefilelist treeidlist diffids nullid nullid2
7555    global ctext_file_names ctext_file_lines
7556    global ctext commentend
7557
7558    set i [lsearch -exact $treefilelist($diffids) $f]
7559    if {$i < 0} {
7560        puts "oops, $f not in list for id $diffids"
7561        return
7562    }
7563    if {$diffids eq $nullid} {
7564        if {[catch {set bf [open $f r]} err]} {
7565            puts "oops, can't read $f: $err"
7566            return
7567        }
7568    } else {
7569        set blob [lindex $treeidlist($diffids) $i]
7570        if {[catch {set bf [open [concat | git cat-file blob $blob] r]} err]} {
7571            puts "oops, error reading blob $blob: $err"
7572            return
7573        }
7574    }
7575    fconfigure $bf -blocking 0 -encoding [get_path_encoding $f]
7576    filerun $bf [list getblobline $bf $diffids]
7577    $ctext config -state normal
7578    clear_ctext $commentend
7579    lappend ctext_file_names $f
7580    lappend ctext_file_lines [lindex [split $commentend "."] 0]
7581    $ctext insert end "\n"
7582    $ctext insert end "$f\n" filesep
7583    $ctext config -state disabled
7584    $ctext yview $commentend
7585    settabs 0
7586}
7587
7588proc getblobline {bf id} {
7589    global diffids cmitmode ctext
7590
7591    if {$id ne $diffids || $cmitmode ne "tree"} {
7592        catch {close $bf}
7593        return 0
7594    }
7595    $ctext config -state normal
7596    set nl 0
7597    while {[incr nl] <= 1000 && [gets $bf line] >= 0} {
7598        $ctext insert end "$line\n"
7599    }
7600    if {[eof $bf]} {
7601        global jump_to_here ctext_file_names commentend
7602
7603        # delete last newline
7604        $ctext delete "end - 2c" "end - 1c"
7605        close $bf
7606        if {$jump_to_here ne {} &&
7607            [lindex $jump_to_here 0] eq [lindex $ctext_file_names 0]} {
7608            set lnum [expr {[lindex $jump_to_here 1] +
7609                            [lindex [split $commentend .] 0]}]
7610            mark_ctext_line $lnum
7611        }
7612        $ctext config -state disabled
7613        return 0
7614    }
7615    $ctext config -state disabled
7616    return [expr {$nl >= 1000? 2: 1}]
7617}
7618
7619proc mark_ctext_line {lnum} {
7620    global ctext markbgcolor
7621
7622    $ctext tag delete omark
7623    $ctext tag add omark $lnum.0 "$lnum.0 + 1 line"
7624    $ctext tag conf omark -background $markbgcolor
7625    $ctext see $lnum.0
7626}
7627
7628proc mergediff {id} {
7629    global diffmergeid
7630    global diffids treediffs
7631    global parents curview
7632
7633    set diffmergeid $id
7634    set diffids $id
7635    set treediffs($id) {}
7636    set np [llength $parents($curview,$id)]
7637    settabs $np
7638    getblobdiffs $id
7639}
7640
7641proc startdiff {ids} {
7642    global treediffs diffids treepending diffmergeid nullid nullid2
7643
7644    settabs 1
7645    set diffids $ids
7646    catch {unset diffmergeid}
7647    if {![info exists treediffs($ids)] ||
7648        [lsearch -exact $ids $nullid] >= 0 ||
7649        [lsearch -exact $ids $nullid2] >= 0} {
7650        if {![info exists treepending]} {
7651            gettreediffs $ids
7652        }
7653    } else {
7654        addtocflist $ids
7655    }
7656}
7657
7658proc showinlinediff {ids} {
7659    global commitinfo commitdata ctext
7660    global treediffs
7661
7662    set info $commitinfo($ids)
7663    set diff [lindex $info 7]
7664    set difflines [split $diff "\n"]
7665
7666    initblobdiffvars
7667    set treediff {}
7668
7669    set inhdr 0
7670    foreach line $difflines {
7671        if {![string compare -length 5 "diff " $line]} {
7672            set inhdr 1
7673        } elseif {$inhdr && ![string compare -length 4 "+++ " $line]} {
7674            # offset also accounts for the b/ prefix
7675            lappend treediff [string range $line 6 end]
7676            set inhdr 0
7677        }
7678    }
7679
7680    set treediffs($ids) $treediff
7681    add_flist $treediff
7682
7683    $ctext conf -state normal
7684    foreach line $difflines {
7685        parseblobdiffline $ids $line
7686    }
7687    maybe_scroll_ctext 1
7688    $ctext conf -state disabled
7689}
7690
7691# If the filename (name) is under any of the passed filter paths
7692# then return true to include the file in the listing.
7693proc path_filter {filter name} {
7694    set worktree [gitworktree]
7695    foreach p $filter {
7696        set fq_p [file normalize $p]
7697        set fq_n [file normalize [file join $worktree $name]]
7698        if {[string match [file normalize $fq_p]* $fq_n]} {
7699            return 1
7700        }
7701    }
7702    return 0
7703}
7704
7705proc addtocflist {ids} {
7706    global treediffs
7707
7708    add_flist $treediffs($ids)
7709    getblobdiffs $ids
7710}
7711
7712proc diffcmd {ids flags} {
7713    global log_showroot nullid nullid2
7714
7715    set i [lsearch -exact $ids $nullid]
7716    set j [lsearch -exact $ids $nullid2]
7717    if {$i >= 0} {
7718        if {[llength $ids] > 1 && $j < 0} {
7719            # comparing working directory with some specific revision
7720            set cmd [concat | git diff-index $flags]
7721            if {$i == 0} {
7722                lappend cmd -R [lindex $ids 1]
7723            } else {
7724                lappend cmd [lindex $ids 0]
7725            }
7726        } else {
7727            # comparing working directory with index
7728            set cmd [concat | git diff-files $flags]
7729            if {$j == 1} {
7730                lappend cmd -R
7731            }
7732        }
7733    } elseif {$j >= 0} {
7734        set cmd [concat | git diff-index --cached $flags]
7735        if {[llength $ids] > 1} {
7736            # comparing index with specific revision
7737            if {$j == 0} {
7738                lappend cmd -R [lindex $ids 1]
7739            } else {
7740                lappend cmd [lindex $ids 0]
7741            }
7742        } else {
7743            # comparing index with HEAD
7744            lappend cmd HEAD
7745        }
7746    } else {
7747        if {$log_showroot} {
7748            lappend flags --root
7749        }
7750        set cmd [concat | git diff-tree -r $flags $ids]
7751    }
7752    return $cmd
7753}
7754
7755proc gettreediffs {ids} {
7756    global treediff treepending limitdiffs vfilelimit curview
7757
7758    set cmd [diffcmd $ids {--no-commit-id}]
7759    if {$limitdiffs && $vfilelimit($curview) ne {}} {
7760            set cmd [concat $cmd -- $vfilelimit($curview)]
7761    }
7762    if {[catch {set gdtf [open $cmd r]}]} return
7763
7764    set treepending $ids
7765    set treediff {}
7766    fconfigure $gdtf -blocking 0 -encoding binary
7767    filerun $gdtf [list gettreediffline $gdtf $ids]
7768}
7769
7770proc gettreediffline {gdtf ids} {
7771    global treediff treediffs treepending diffids diffmergeid
7772    global cmitmode vfilelimit curview limitdiffs perfile_attrs
7773
7774    set nr 0
7775    set sublist {}
7776    set max 1000
7777    if {$perfile_attrs} {
7778        # cache_gitattr is slow, and even slower on win32 where we
7779        # have to invoke it for only about 30 paths at a time
7780        set max 500
7781        if {[tk windowingsystem] == "win32"} {
7782            set max 120
7783        }
7784    }
7785    while {[incr nr] <= $max && [gets $gdtf line] >= 0} {
7786        set i [string first "\t" $line]
7787        if {$i >= 0} {
7788            set file [string range $line [expr {$i+1}] end]
7789            if {[string index $file 0] eq "\""} {
7790                set file [lindex $file 0]
7791            }
7792            set file [encoding convertfrom $file]
7793            if {$file ne [lindex $treediff end]} {
7794                lappend treediff $file
7795                lappend sublist $file
7796            }
7797        }
7798    }
7799    if {$perfile_attrs} {
7800        cache_gitattr encoding $sublist
7801    }
7802    if {![eof $gdtf]} {
7803        return [expr {$nr >= $max? 2: 1}]
7804    }
7805    close $gdtf
7806    set treediffs($ids) $treediff
7807    unset treepending
7808    if {$cmitmode eq "tree" && [llength $diffids] == 1} {
7809        gettree $diffids
7810    } elseif {$ids != $diffids} {
7811        if {![info exists diffmergeid]} {
7812            gettreediffs $diffids
7813        }
7814    } else {
7815        addtocflist $ids
7816    }
7817    return 0
7818}
7819
7820# empty string or positive integer
7821proc diffcontextvalidate {v} {
7822    return [regexp {^(|[1-9][0-9]*)$} $v]
7823}
7824
7825proc diffcontextchange {n1 n2 op} {
7826    global diffcontextstring diffcontext
7827
7828    if {[string is integer -strict $diffcontextstring]} {
7829        if {$diffcontextstring >= 0} {
7830            set diffcontext $diffcontextstring
7831            reselectline
7832        }
7833    }
7834}
7835
7836proc changeignorespace {} {
7837    reselectline
7838}
7839
7840proc changeworddiff {name ix op} {
7841    reselectline
7842}
7843
7844proc initblobdiffvars {} {
7845    global diffencoding targetline diffnparents
7846    global diffinhdr currdiffsubmod diffseehere
7847    set targetline {}
7848    set diffnparents 0
7849    set diffinhdr 0
7850    set diffencoding [get_path_encoding {}]
7851    set currdiffsubmod ""
7852    set diffseehere -1
7853}
7854
7855proc getblobdiffs {ids} {
7856    global blobdifffd diffids env
7857    global treediffs
7858    global diffcontext
7859    global ignorespace
7860    global worddiff
7861    global limitdiffs vfilelimit curview
7862    global git_version
7863
7864    set textconv {}
7865    if {[package vcompare $git_version "1.6.1"] >= 0} {
7866        set textconv "--textconv"
7867    }
7868    set submodule {}
7869    if {[package vcompare $git_version "1.6.6"] >= 0} {
7870        set submodule "--submodule"
7871    }
7872    set cmd [diffcmd $ids "-p $textconv $submodule  -C --cc --no-commit-id -U$diffcontext"]
7873    if {$ignorespace} {
7874        append cmd " -w"
7875    }
7876    if {$worddiff ne [mc "Line diff"]} {
7877        append cmd " --word-diff=porcelain"
7878    }
7879    if {$limitdiffs && $vfilelimit($curview) ne {}} {
7880        set cmd [concat $cmd -- $vfilelimit($curview)]
7881    }
7882    if {[catch {set bdf [open $cmd r]} err]} {
7883        error_popup [mc "Error getting diffs: %s" $err]
7884        return
7885    }
7886    fconfigure $bdf -blocking 0 -encoding binary -eofchar {}
7887    set blobdifffd($ids) $bdf
7888    initblobdiffvars
7889    filerun $bdf [list getblobdiffline $bdf $diffids]
7890}
7891
7892proc savecmitpos {} {
7893    global ctext cmitmode
7894
7895    if {$cmitmode eq "tree"} {
7896        return {}
7897    }
7898    return [list target_scrollpos [$ctext index @0,0]]
7899}
7900
7901proc savectextpos {} {
7902    global ctext
7903
7904    return [list target_scrollpos [$ctext index @0,0]]
7905}
7906
7907proc maybe_scroll_ctext {ateof} {
7908    global ctext target_scrollpos
7909
7910    if {![info exists target_scrollpos]} return
7911    if {!$ateof} {
7912        set nlines [expr {[winfo height $ctext]
7913                          / [font metrics textfont -linespace]}]
7914        if {[$ctext compare "$target_scrollpos + $nlines lines" <= end]} return
7915    }
7916    $ctext yview $target_scrollpos
7917    unset target_scrollpos
7918}
7919
7920proc setinlist {var i val} {
7921    global $var
7922
7923    while {[llength [set $var]] < $i} {
7924        lappend $var {}
7925    }
7926    if {[llength [set $var]] == $i} {
7927        lappend $var $val
7928    } else {
7929        lset $var $i $val
7930    }
7931}
7932
7933proc makediffhdr {fname ids} {
7934    global ctext curdiffstart treediffs diffencoding
7935    global ctext_file_names jump_to_here targetline diffline
7936
7937    set fname [encoding convertfrom $fname]
7938    set diffencoding [get_path_encoding $fname]
7939    set i [lsearch -exact $treediffs($ids) $fname]
7940    if {$i >= 0} {
7941        setinlist difffilestart $i $curdiffstart
7942    }
7943    lset ctext_file_names end $fname
7944    set l [expr {(78 - [string length $fname]) / 2}]
7945    set pad [string range "----------------------------------------" 1 $l]
7946    $ctext insert $curdiffstart "$pad $fname $pad" filesep
7947    set targetline {}
7948    if {$jump_to_here ne {} && [lindex $jump_to_here 0] eq $fname} {
7949        set targetline [lindex $jump_to_here 1]
7950    }
7951    set diffline 0
7952}
7953
7954proc blobdiffmaybeseehere {ateof} {
7955    global diffseehere
7956    if {$diffseehere >= 0} {
7957        mark_ctext_line [lindex [split $diffseehere .] 0]
7958    }
7959    maybe_scroll_ctext $ateof
7960}
7961
7962proc getblobdiffline {bdf ids} {
7963    global diffids blobdifffd
7964    global ctext
7965
7966    set nr 0
7967    $ctext conf -state normal
7968    while {[incr nr] <= 1000 && [gets $bdf line] >= 0} {
7969        if {$ids != $diffids || $bdf != $blobdifffd($ids)} {
7970            catch {close $bdf}
7971            return 0
7972        }
7973        parseblobdiffline $ids $line
7974    }
7975    $ctext conf -state disabled
7976    blobdiffmaybeseehere [eof $bdf]
7977    if {[eof $bdf]} {
7978        catch {close $bdf}
7979        return 0
7980    }
7981    return [expr {$nr >= 1000? 2: 1}]
7982}
7983
7984proc parseblobdiffline {ids line} {
7985    global ctext curdiffstart
7986    global diffnexthead diffnextnote difffilestart
7987    global ctext_file_names ctext_file_lines
7988    global diffinhdr treediffs mergemax diffnparents
7989    global diffencoding jump_to_here targetline diffline currdiffsubmod
7990    global worddiff diffseehere
7991
7992    if {![string compare -length 5 "diff " $line]} {
7993        if {![regexp {^diff (--cc|--git) } $line m type]} {
7994            set line [encoding convertfrom $line]
7995            $ctext insert end "$line\n" hunksep
7996            continue
7997        }
7998        # start of a new file
7999        set diffinhdr 1
8000        $ctext insert end "\n"
8001        set curdiffstart [$ctext index "end - 1c"]
8002        lappend ctext_file_names ""
8003        lappend ctext_file_lines [lindex [split $curdiffstart "."] 0]
8004        $ctext insert end "\n" filesep
8005
8006        if {$type eq "--cc"} {
8007            # start of a new file in a merge diff
8008            set fname [string range $line 10 end]
8009            if {[lsearch -exact $treediffs($ids) $fname] < 0} {
8010                lappend treediffs($ids) $fname
8011                add_flist [list $fname]
8012            }
8013
8014        } else {
8015            set line [string range $line 11 end]
8016            # If the name hasn't changed the length will be odd,
8017            # the middle char will be a space, and the two bits either
8018            # side will be a/name and b/name, or "a/name" and "b/name".
8019            # If the name has changed we'll get "rename from" and
8020            # "rename to" or "copy from" and "copy to" lines following
8021            # this, and we'll use them to get the filenames.
8022            # This complexity is necessary because spaces in the
8023            # filename(s) don't get escaped.
8024            set l [string length $line]
8025            set i [expr {$l / 2}]
8026            if {!(($l & 1) && [string index $line $i] eq " " &&
8027                  [string range $line 2 [expr {$i - 1}]] eq \
8028                      [string range $line [expr {$i + 3}] end])} {
8029                return
8030            }
8031            # unescape if quoted and chop off the a/ from the front
8032            if {[string index $line 0] eq "\""} {
8033                set fname [string range [lindex $line 0] 2 end]
8034            } else {
8035                set fname [string range $line 2 [expr {$i - 1}]]
8036            }
8037        }
8038        makediffhdr $fname $ids
8039
8040    } elseif {![string compare -length 16 "* Unmerged path " $line]} {
8041        set fname [encoding convertfrom [string range $line 16 end]]
8042        $ctext insert end "\n"
8043        set curdiffstart [$ctext index "end - 1c"]
8044        lappend ctext_file_names $fname
8045        lappend ctext_file_lines [lindex [split $curdiffstart "."] 0]
8046        $ctext insert end "$line\n" filesep
8047        set i [lsearch -exact $treediffs($ids) $fname]
8048        if {$i >= 0} {
8049            setinlist difffilestart $i $curdiffstart
8050        }
8051
8052    } elseif {![string compare -length 2 "@@" $line]} {
8053        regexp {^@@+} $line ats
8054        set line [encoding convertfrom $diffencoding $line]
8055        $ctext insert end "$line\n" hunksep
8056        if {[regexp { \+(\d+),\d+ @@} $line m nl]} {
8057            set diffline $nl
8058        }
8059        set diffnparents [expr {[string length $ats] - 1}]
8060        set diffinhdr 0
8061
8062    } elseif {![string compare -length 10 "Submodule " $line]} {
8063        # start of a new submodule
8064        if {[regexp -indices "\[0-9a-f\]+\\.\\." $line nameend]} {
8065            set fname [string range $line 10 [expr [lindex $nameend 0] - 2]]
8066        } else {
8067            set fname [string range $line 10 [expr [string first "contains " $line] - 2]]
8068        }
8069        if {$currdiffsubmod != $fname} {
8070            $ctext insert end "\n";     # Add newline after commit message
8071        }
8072        set curdiffstart [$ctext index "end - 1c"]
8073        lappend ctext_file_names ""
8074        if {$currdiffsubmod != $fname} {
8075            lappend ctext_file_lines $fname
8076            makediffhdr $fname $ids
8077            set currdiffsubmod $fname
8078            $ctext insert end "\n$line\n" filesep
8079        } else {
8080            $ctext insert end "$line\n" filesep
8081        }
8082    } elseif {![string compare -length 3 "  >" $line]} {
8083        set $currdiffsubmod ""
8084        set line [encoding convertfrom $diffencoding $line]
8085        $ctext insert end "$line\n" dresult
8086    } elseif {![string compare -length 3 "  <" $line]} {
8087        set $currdiffsubmod ""
8088        set line [encoding convertfrom $diffencoding $line]
8089        $ctext insert end "$line\n" d0
8090    } elseif {$diffinhdr} {
8091        if {![string compare -length 12 "rename from " $line]} {
8092            set fname [string range $line [expr 6 + [string first " from " $line] ] end]
8093            if {[string index $fname 0] eq "\""} {
8094                set fname [lindex $fname 0]
8095            }
8096            set fname [encoding convertfrom $fname]
8097            set i [lsearch -exact $treediffs($ids) $fname]
8098            if {$i >= 0} {
8099                setinlist difffilestart $i $curdiffstart
8100            }
8101        } elseif {![string compare -length 10 $line "rename to "] ||
8102                  ![string compare -length 8 $line "copy to "]} {
8103            set fname [string range $line [expr 4 + [string first " to " $line] ] end]
8104            if {[string index $fname 0] eq "\""} {
8105                set fname [lindex $fname 0]
8106            }
8107            makediffhdr $fname $ids
8108        } elseif {[string compare -length 3 $line "---"] == 0} {
8109            # do nothing
8110            return
8111        } elseif {[string compare -length 3 $line "+++"] == 0} {
8112            set diffinhdr 0
8113            return
8114        }
8115        $ctext insert end "$line\n" filesep
8116
8117    } else {
8118        set line [string map {\x1A ^Z} \
8119                      [encoding convertfrom $diffencoding $line]]
8120        # parse the prefix - one ' ', '-' or '+' for each parent
8121        set prefix [string range $line 0 [expr {$diffnparents - 1}]]
8122        set tag [expr {$diffnparents > 1? "m": "d"}]
8123        set dowords [expr {$worddiff ne [mc "Line diff"] && $diffnparents == 1}]
8124        set words_pre_markup ""
8125        set words_post_markup ""
8126        if {[string trim $prefix " -+"] eq {}} {
8127            # prefix only has " ", "-" and "+" in it: normal diff line
8128            set num [string first "-" $prefix]
8129            if {$dowords} {
8130                set line [string range $line 1 end]
8131            }
8132            if {$num >= 0} {
8133                # removed line, first parent with line is $num
8134                if {$num >= $mergemax} {
8135                    set num "max"
8136                }
8137                if {$dowords && $worddiff eq [mc "Markup words"]} {
8138                    $ctext insert end "\[-$line-\]" $tag$num
8139                } else {
8140                    $ctext insert end "$line" $tag$num
8141                }
8142                if {!$dowords} {
8143                    $ctext insert end "\n" $tag$num
8144                }
8145            } else {
8146                set tags {}
8147                if {[string first "+" $prefix] >= 0} {
8148                    # added line
8149                    lappend tags ${tag}result
8150                    if {$diffnparents > 1} {
8151                        set num [string first " " $prefix]
8152                        if {$num >= 0} {
8153                            if {$num >= $mergemax} {
8154                                set num "max"
8155                            }
8156                            lappend tags m$num
8157                        }
8158                    }
8159                    set words_pre_markup "{+"
8160                    set words_post_markup "+}"
8161                }
8162                if {$targetline ne {}} {
8163                    if {$diffline == $targetline} {
8164                        set diffseehere [$ctext index "end - 1 chars"]
8165                        set targetline {}
8166                    } else {
8167                        incr diffline
8168                    }
8169                }
8170                if {$dowords && $worddiff eq [mc "Markup words"]} {
8171                    $ctext insert end "$words_pre_markup$line$words_post_markup" $tags
8172                } else {
8173                    $ctext insert end "$line" $tags
8174                }
8175                if {!$dowords} {
8176                    $ctext insert end "\n" $tags
8177                }
8178            }
8179        } elseif {$dowords && $prefix eq "~"} {
8180            $ctext insert end "\n" {}
8181        } else {
8182            # "\ No newline at end of file",
8183            # or something else we don't recognize
8184            $ctext insert end "$line\n" hunksep
8185        }
8186    }
8187}
8188
8189proc changediffdisp {} {
8190    global ctext diffelide
8191
8192    $ctext tag conf d0 -elide [lindex $diffelide 0]
8193    $ctext tag conf dresult -elide [lindex $diffelide 1]
8194}
8195
8196proc highlightfile {cline} {
8197    global cflist cflist_top
8198
8199    if {![info exists cflist_top]} return
8200
8201    $cflist tag remove highlight $cflist_top.0 "$cflist_top.0 lineend"
8202    $cflist tag add highlight $cline.0 "$cline.0 lineend"
8203    $cflist see $cline.0
8204    set cflist_top $cline
8205}
8206
8207proc highlightfile_for_scrollpos {topidx} {
8208    global cmitmode difffilestart
8209
8210    if {$cmitmode eq "tree"} return
8211    if {![info exists difffilestart]} return
8212
8213    set top [lindex [split $topidx .] 0]
8214    if {$difffilestart eq {} || $top < [lindex $difffilestart 0]} {
8215        highlightfile 0
8216    } else {
8217        highlightfile [expr {[bsearch $difffilestart $top] + 2}]
8218    }
8219}
8220
8221proc prevfile {} {
8222    global difffilestart ctext cmitmode
8223
8224    if {$cmitmode eq "tree"} return
8225    set prev 0.0
8226    set here [$ctext index @0,0]
8227    foreach loc $difffilestart {
8228        if {[$ctext compare $loc >= $here]} {
8229            $ctext yview $prev
8230            return
8231        }
8232        set prev $loc
8233    }
8234    $ctext yview $prev
8235}
8236
8237proc nextfile {} {
8238    global difffilestart ctext cmitmode
8239
8240    if {$cmitmode eq "tree"} return
8241    set here [$ctext index @0,0]
8242    foreach loc $difffilestart {
8243        if {[$ctext compare $loc > $here]} {
8244            $ctext yview $loc
8245            return
8246        }
8247    }
8248}
8249
8250proc clear_ctext {{first 1.0}} {
8251    global ctext smarktop smarkbot
8252    global ctext_file_names ctext_file_lines
8253    global pendinglinks
8254
8255    set l [lindex [split $first .] 0]
8256    if {![info exists smarktop] || [$ctext compare $first < $smarktop.0]} {
8257        set smarktop $l
8258    }
8259    if {![info exists smarkbot] || [$ctext compare $first < $smarkbot.0]} {
8260        set smarkbot $l
8261    }
8262    $ctext delete $first end
8263    if {$first eq "1.0"} {
8264        catch {unset pendinglinks}
8265    }
8266    set ctext_file_names {}
8267    set ctext_file_lines {}
8268}
8269
8270proc settabs {{firstab {}}} {
8271    global firsttabstop tabstop ctext have_tk85
8272
8273    if {$firstab ne {} && $have_tk85} {
8274        set firsttabstop $firstab
8275    }
8276    set w [font measure textfont "0"]
8277    if {$firsttabstop != 0} {
8278        $ctext conf -tabs [list [expr {($firsttabstop + $tabstop) * $w}] \
8279                               [expr {($firsttabstop + 2 * $tabstop) * $w}]]
8280    } elseif {$have_tk85 || $tabstop != 8} {
8281        $ctext conf -tabs [expr {$tabstop * $w}]
8282    } else {
8283        $ctext conf -tabs {}
8284    }
8285}
8286
8287proc incrsearch {name ix op} {
8288    global ctext searchstring searchdirn
8289
8290    if {[catch {$ctext index anchor}]} {
8291        # no anchor set, use start of selection, or of visible area
8292        set sel [$ctext tag ranges sel]
8293        if {$sel ne {}} {
8294            $ctext mark set anchor [lindex $sel 0]
8295        } elseif {$searchdirn eq "-forwards"} {
8296            $ctext mark set anchor @0,0
8297        } else {
8298            $ctext mark set anchor @0,[winfo height $ctext]
8299        }
8300    }
8301    if {$searchstring ne {}} {
8302        set here [$ctext search -count mlen $searchdirn -- $searchstring anchor]
8303        if {$here ne {}} {
8304            $ctext see $here
8305            set mend "$here + $mlen c"
8306            $ctext tag remove sel 1.0 end
8307            $ctext tag add sel $here $mend
8308            suppress_highlighting_file_for_current_scrollpos
8309            highlightfile_for_scrollpos $here
8310        }
8311    }
8312    rehighlight_search_results
8313}
8314
8315proc dosearch {} {
8316    global sstring ctext searchstring searchdirn
8317
8318    focus $sstring
8319    $sstring icursor end
8320    set searchdirn -forwards
8321    if {$searchstring ne {}} {
8322        set sel [$ctext tag ranges sel]
8323        if {$sel ne {}} {
8324            set start "[lindex $sel 0] + 1c"
8325        } elseif {[catch {set start [$ctext index anchor]}]} {
8326            set start "@0,0"
8327        }
8328        set match [$ctext search -count mlen -- $searchstring $start]
8329        $ctext tag remove sel 1.0 end
8330        if {$match eq {}} {
8331            bell
8332            return
8333        }
8334        $ctext see $match
8335        suppress_highlighting_file_for_current_scrollpos
8336        highlightfile_for_scrollpos $match
8337        set mend "$match + $mlen c"
8338        $ctext tag add sel $match $mend
8339        $ctext mark unset anchor
8340        rehighlight_search_results
8341    }
8342}
8343
8344proc dosearchback {} {
8345    global sstring ctext searchstring searchdirn
8346
8347    focus $sstring
8348    $sstring icursor end
8349    set searchdirn -backwards
8350    if {$searchstring ne {}} {
8351        set sel [$ctext tag ranges sel]
8352        if {$sel ne {}} {
8353            set start [lindex $sel 0]
8354        } elseif {[catch {set start [$ctext index anchor]}]} {
8355            set start @0,[winfo height $ctext]
8356        }
8357        set match [$ctext search -backwards -count ml -- $searchstring $start]
8358        $ctext tag remove sel 1.0 end
8359        if {$match eq {}} {
8360            bell
8361            return
8362        }
8363        $ctext see $match
8364        suppress_highlighting_file_for_current_scrollpos
8365        highlightfile_for_scrollpos $match
8366        set mend "$match + $ml c"
8367        $ctext tag add sel $match $mend
8368        $ctext mark unset anchor
8369        rehighlight_search_results
8370    }
8371}
8372
8373proc rehighlight_search_results {} {
8374    global ctext searchstring
8375
8376    $ctext tag remove found 1.0 end
8377    $ctext tag remove currentsearchhit 1.0 end
8378
8379    if {$searchstring ne {}} {
8380        searchmarkvisible 1
8381    }
8382}
8383
8384proc searchmark {first last} {
8385    global ctext searchstring
8386
8387    set sel [$ctext tag ranges sel]
8388
8389    set mend $first.0
8390    while {1} {
8391        set match [$ctext search -count mlen -- $searchstring $mend $last.end]
8392        if {$match eq {}} break
8393        set mend "$match + $mlen c"
8394        if {$sel ne {} && [$ctext compare $match == [lindex $sel 0]]} {
8395            $ctext tag add currentsearchhit $match $mend
8396        } else {
8397            $ctext tag add found $match $mend
8398        }
8399    }
8400}
8401
8402proc searchmarkvisible {doall} {
8403    global ctext smarktop smarkbot
8404
8405    set topline [lindex [split [$ctext index @0,0] .] 0]
8406    set botline [lindex [split [$ctext index @0,[winfo height $ctext]] .] 0]
8407    if {$doall || $botline < $smarktop || $topline > $smarkbot} {
8408        # no overlap with previous
8409        searchmark $topline $botline
8410        set smarktop $topline
8411        set smarkbot $botline
8412    } else {
8413        if {$topline < $smarktop} {
8414            searchmark $topline [expr {$smarktop-1}]
8415            set smarktop $topline
8416        }
8417        if {$botline > $smarkbot} {
8418            searchmark [expr {$smarkbot+1}] $botline
8419            set smarkbot $botline
8420        }
8421    }
8422}
8423
8424proc suppress_highlighting_file_for_current_scrollpos {} {
8425    global ctext suppress_highlighting_file_for_this_scrollpos
8426
8427    set suppress_highlighting_file_for_this_scrollpos [$ctext index @0,0]
8428}
8429
8430proc scrolltext {f0 f1} {
8431    global searchstring cmitmode ctext
8432    global suppress_highlighting_file_for_this_scrollpos
8433
8434    set topidx [$ctext index @0,0]
8435    if {![info exists suppress_highlighting_file_for_this_scrollpos]
8436        || $topidx ne $suppress_highlighting_file_for_this_scrollpos} {
8437        highlightfile_for_scrollpos $topidx
8438    }
8439
8440    catch {unset suppress_highlighting_file_for_this_scrollpos}
8441
8442    .bleft.bottom.sb set $f0 $f1
8443    if {$searchstring ne {}} {
8444        searchmarkvisible 0
8445    }
8446}
8447
8448proc setcoords {} {
8449    global linespc charspc canvx0 canvy0
8450    global xspc1 xspc2 lthickness
8451
8452    set linespc [font metrics mainfont -linespace]
8453    set charspc [font measure mainfont "m"]
8454    set canvy0 [expr {int(3 + 0.5 * $linespc)}]
8455    set canvx0 [expr {int(3 + 0.5 * $linespc)}]
8456    set lthickness [expr {int($linespc / 9) + 1}]
8457    set xspc1(0) $linespc
8458    set xspc2 $linespc
8459}
8460
8461proc redisplay {} {
8462    global canv
8463    global selectedline
8464
8465    set ymax [lindex [$canv cget -scrollregion] 3]
8466    if {$ymax eq {} || $ymax == 0} return
8467    set span [$canv yview]
8468    clear_display
8469    setcanvscroll
8470    allcanvs yview moveto [lindex $span 0]
8471    drawvisible
8472    if {$selectedline ne {}} {
8473        selectline $selectedline 0
8474        allcanvs yview moveto [lindex $span 0]
8475    }
8476}
8477
8478proc parsefont {f n} {
8479    global fontattr
8480
8481    set fontattr($f,family) [lindex $n 0]
8482    set s [lindex $n 1]
8483    if {$s eq {} || $s == 0} {
8484        set s 10
8485    } elseif {$s < 0} {
8486        set s [expr {int(-$s / [winfo fpixels . 1p] + 0.5)}]
8487    }
8488    set fontattr($f,size) $s
8489    set fontattr($f,weight) normal
8490    set fontattr($f,slant) roman
8491    foreach style [lrange $n 2 end] {
8492        switch -- $style {
8493            "normal" -
8494            "bold"   {set fontattr($f,weight) $style}
8495            "roman" -
8496            "italic" {set fontattr($f,slant) $style}
8497        }
8498    }
8499}
8500
8501proc fontflags {f {isbold 0}} {
8502    global fontattr
8503
8504    return [list -family $fontattr($f,family) -size $fontattr($f,size) \
8505                -weight [expr {$isbold? "bold": $fontattr($f,weight)}] \
8506                -slant $fontattr($f,slant)]
8507}
8508
8509proc fontname {f} {
8510    global fontattr
8511
8512    set n [list $fontattr($f,family) $fontattr($f,size)]
8513    if {$fontattr($f,weight) eq "bold"} {
8514        lappend n "bold"
8515    }
8516    if {$fontattr($f,slant) eq "italic"} {
8517        lappend n "italic"
8518    }
8519    return $n
8520}
8521
8522proc incrfont {inc} {
8523    global mainfont textfont ctext canv cflist showrefstop
8524    global stopped entries fontattr
8525
8526    unmarkmatches
8527    set s $fontattr(mainfont,size)
8528    incr s $inc
8529    if {$s < 1} {
8530        set s 1
8531    }
8532    set fontattr(mainfont,size) $s
8533    font config mainfont -size $s
8534    font config mainfontbold -size $s
8535    set mainfont [fontname mainfont]
8536    set s $fontattr(textfont,size)
8537    incr s $inc
8538    if {$s < 1} {
8539        set s 1
8540    }
8541    set fontattr(textfont,size) $s
8542    font config textfont -size $s
8543    font config textfontbold -size $s
8544    set textfont [fontname textfont]
8545    setcoords
8546    settabs
8547    redisplay
8548}
8549
8550proc clearsha1 {} {
8551    global sha1entry sha1string
8552    if {[string length $sha1string] == 40} {
8553        $sha1entry delete 0 end
8554    }
8555}
8556
8557proc sha1change {n1 n2 op} {
8558    global sha1string currentid sha1but
8559    if {$sha1string == {}
8560        || ([info exists currentid] && $sha1string == $currentid)} {
8561        set state disabled
8562    } else {
8563        set state normal
8564    }
8565    if {[$sha1but cget -state] == $state} return
8566    if {$state == "normal"} {
8567        $sha1but conf -state normal -relief raised -text "[mc "Goto:"] "
8568    } else {
8569        $sha1but conf -state disabled -relief flat -text "[mc "SHA1 ID:"] "
8570    }
8571}
8572
8573proc gotocommit {} {
8574    global sha1string tagids headids curview varcid
8575
8576    if {$sha1string == {}
8577        || ([info exists currentid] && $sha1string == $currentid)} return
8578    if {[info exists tagids($sha1string)]} {
8579        set id $tagids($sha1string)
8580    } elseif {[info exists headids($sha1string)]} {
8581        set id $headids($sha1string)
8582    } else {
8583        set id [string tolower $sha1string]
8584        if {[regexp {^[0-9a-f]{4,39}$} $id]} {
8585            set matches [longid $id]
8586            if {$matches ne {}} {
8587                if {[llength $matches] > 1} {
8588                    error_popup [mc "Short SHA1 id %s is ambiguous" $id]
8589                    return
8590                }
8591                set id [lindex $matches 0]
8592            }
8593        } else {
8594            if {[catch {set id [exec git rev-parse --verify $sha1string]}]} {
8595                error_popup [mc "Revision %s is not known" $sha1string]
8596                return
8597            }
8598        }
8599    }
8600    if {[commitinview $id $curview]} {
8601        selectline [rowofcommit $id] 1
8602        return
8603    }
8604    if {[regexp {^[0-9a-fA-F]{4,}$} $sha1string]} {
8605        set msg [mc "SHA1 id %s is not known" $sha1string]
8606    } else {
8607        set msg [mc "Revision %s is not in the current view" $sha1string]
8608    }
8609    error_popup $msg
8610}
8611
8612proc lineenter {x y id} {
8613    global hoverx hovery hoverid hovertimer
8614    global commitinfo canv
8615
8616    if {![info exists commitinfo($id)] && ![getcommit $id]} return
8617    set hoverx $x
8618    set hovery $y
8619    set hoverid $id
8620    if {[info exists hovertimer]} {
8621        after cancel $hovertimer
8622    }
8623    set hovertimer [after 500 linehover]
8624    $canv delete hover
8625}
8626
8627proc linemotion {x y id} {
8628    global hoverx hovery hoverid hovertimer
8629
8630    if {[info exists hoverid] && $id == $hoverid} {
8631        set hoverx $x
8632        set hovery $y
8633        if {[info exists hovertimer]} {
8634            after cancel $hovertimer
8635        }
8636        set hovertimer [after 500 linehover]
8637    }
8638}
8639
8640proc lineleave {id} {
8641    global hoverid hovertimer canv
8642
8643    if {[info exists hoverid] && $id == $hoverid} {
8644        $canv delete hover
8645        if {[info exists hovertimer]} {
8646            after cancel $hovertimer
8647            unset hovertimer
8648        }
8649        unset hoverid
8650    }
8651}
8652
8653proc linehover {} {
8654    global hoverx hovery hoverid hovertimer
8655    global canv linespc lthickness
8656    global linehoverbgcolor linehoverfgcolor linehoveroutlinecolor
8657
8658    global commitinfo
8659
8660    set text [lindex $commitinfo($hoverid) 0]
8661    set ymax [lindex [$canv cget -scrollregion] 3]
8662    if {$ymax == {}} return
8663    set yfrac [lindex [$canv yview] 0]
8664    set x [expr {$hoverx + 2 * $linespc}]
8665    set y [expr {$hovery + $yfrac * $ymax - $linespc / 2}]
8666    set x0 [expr {$x - 2 * $lthickness}]
8667    set y0 [expr {$y - 2 * $lthickness}]
8668    set x1 [expr {$x + [font measure mainfont $text] + 2 * $lthickness}]
8669    set y1 [expr {$y + $linespc + 2 * $lthickness}]
8670    set t [$canv create rectangle $x0 $y0 $x1 $y1 \
8671               -fill $linehoverbgcolor -outline $linehoveroutlinecolor \
8672               -width 1 -tags hover]
8673    $canv raise $t
8674    set t [$canv create text $x $y -anchor nw -text $text -tags hover \
8675               -font mainfont -fill $linehoverfgcolor]
8676    $canv raise $t
8677}
8678
8679proc clickisonarrow {id y} {
8680    global lthickness
8681
8682    set ranges [rowranges $id]
8683    set thresh [expr {2 * $lthickness + 6}]
8684    set n [expr {[llength $ranges] - 1}]
8685    for {set i 1} {$i < $n} {incr i} {
8686        set row [lindex $ranges $i]
8687        if {abs([yc $row] - $y) < $thresh} {
8688            return $i
8689        }
8690    }
8691    return {}
8692}
8693
8694proc arrowjump {id n y} {
8695    global canv
8696
8697    # 1 <-> 2, 3 <-> 4, etc...
8698    set n [expr {(($n - 1) ^ 1) + 1}]
8699    set row [lindex [rowranges $id] $n]
8700    set yt [yc $row]
8701    set ymax [lindex [$canv cget -scrollregion] 3]
8702    if {$ymax eq {} || $ymax <= 0} return
8703    set view [$canv yview]
8704    set yspan [expr {[lindex $view 1] - [lindex $view 0]}]
8705    set yfrac [expr {$yt / $ymax - $yspan / 2}]
8706    if {$yfrac < 0} {
8707        set yfrac 0
8708    }
8709    allcanvs yview moveto $yfrac
8710}
8711
8712proc lineclick {x y id isnew} {
8713    global ctext commitinfo children canv thickerline curview
8714
8715    if {![info exists commitinfo($id)] && ![getcommit $id]} return
8716    unmarkmatches
8717    unselectline
8718    normalline
8719    $canv delete hover
8720    # draw this line thicker than normal
8721    set thickerline $id
8722    drawlines $id
8723    if {$isnew} {
8724        set ymax [lindex [$canv cget -scrollregion] 3]
8725        if {$ymax eq {}} return
8726        set yfrac [lindex [$canv yview] 0]
8727        set y [expr {$y + $yfrac * $ymax}]
8728    }
8729    set dirn [clickisonarrow $id $y]
8730    if {$dirn ne {}} {
8731        arrowjump $id $dirn $y
8732        return
8733    }
8734
8735    if {$isnew} {
8736        addtohistory [list lineclick $x $y $id 0] savectextpos
8737    }
8738    # fill the details pane with info about this line
8739    $ctext conf -state normal
8740    clear_ctext
8741    settabs 0
8742    $ctext insert end "[mc "Parent"]:\t"
8743    $ctext insert end $id link0
8744    setlink $id link0
8745    set info $commitinfo($id)
8746    $ctext insert end "\n\t[lindex $info 0]\n"
8747    $ctext insert end "\t[mc "Author"]:\t[lindex $info 1]\n"
8748    set date [formatdate [lindex $info 2]]
8749    $ctext insert end "\t[mc "Date"]:\t$date\n"
8750    set kids $children($curview,$id)
8751    if {$kids ne {}} {
8752        $ctext insert end "\n[mc "Children"]:"
8753        set i 0
8754        foreach child $kids {
8755            incr i
8756            if {![info exists commitinfo($child)] && ![getcommit $child]} continue
8757            set info $commitinfo($child)
8758            $ctext insert end "\n\t"
8759            $ctext insert end $child link$i
8760            setlink $child link$i
8761            $ctext insert end "\n\t[lindex $info 0]"
8762            $ctext insert end "\n\t[mc "Author"]:\t[lindex $info 1]"
8763            set date [formatdate [lindex $info 2]]
8764            $ctext insert end "\n\t[mc "Date"]:\t$date\n"
8765        }
8766    }
8767    maybe_scroll_ctext 1
8768    $ctext conf -state disabled
8769    init_flist {}
8770}
8771
8772proc normalline {} {
8773    global thickerline
8774    if {[info exists thickerline]} {
8775        set id $thickerline
8776        unset thickerline
8777        drawlines $id
8778    }
8779}
8780
8781proc selbyid {id {isnew 1}} {
8782    global curview
8783    if {[commitinview $id $curview]} {
8784        selectline [rowofcommit $id] $isnew
8785    }
8786}
8787
8788proc mstime {} {
8789    global startmstime
8790    if {![info exists startmstime]} {
8791        set startmstime [clock clicks -milliseconds]
8792    }
8793    return [format "%.3f" [expr {([clock click -milliseconds] - $startmstime) / 1000.0}]]
8794}
8795
8796proc rowmenu {x y id} {
8797    global rowctxmenu selectedline rowmenuid curview
8798    global nullid nullid2 fakerowmenu mainhead markedid
8799
8800    stopfinding
8801    set rowmenuid $id
8802    if {$selectedline eq {} || [rowofcommit $id] eq $selectedline} {
8803        set state disabled
8804    } else {
8805        set state normal
8806    }
8807    if {[info exists markedid] && $markedid ne $id} {
8808        set mstate normal
8809    } else {
8810        set mstate disabled
8811    }
8812    if {$id ne $nullid && $id ne $nullid2} {
8813        set menu $rowctxmenu
8814        if {$mainhead ne {}} {
8815            $menu entryconfigure 7 -label [mc "Reset %s branch to here" $mainhead] -state normal
8816        } else {
8817            $menu entryconfigure 7 -label [mc "Detached head: can't reset" $mainhead] -state disabled
8818        }
8819        $menu entryconfigure 9 -state $mstate
8820        $menu entryconfigure 10 -state $mstate
8821        $menu entryconfigure 11 -state $mstate
8822    } else {
8823        set menu $fakerowmenu
8824    }
8825    $menu entryconfigure [mca "Diff this -> selected"] -state $state
8826    $menu entryconfigure [mca "Diff selected -> this"] -state $state
8827    $menu entryconfigure [mca "Make patch"] -state $state
8828    $menu entryconfigure [mca "Diff this -> marked commit"] -state $mstate
8829    $menu entryconfigure [mca "Diff marked commit -> this"] -state $mstate
8830    tk_popup $menu $x $y
8831}
8832
8833proc markhere {} {
8834    global rowmenuid markedid canv
8835
8836    set markedid $rowmenuid
8837    make_idmark $markedid
8838}
8839
8840proc gotomark {} {
8841    global markedid
8842
8843    if {[info exists markedid]} {
8844        selbyid $markedid
8845    }
8846}
8847
8848proc replace_by_kids {l r} {
8849    global curview children
8850
8851    set id [commitonrow $r]
8852    set l [lreplace $l 0 0]
8853    foreach kid $children($curview,$id) {
8854        lappend l [rowofcommit $kid]
8855    }
8856    return [lsort -integer -decreasing -unique $l]
8857}
8858
8859proc find_common_desc {} {
8860    global markedid rowmenuid curview children
8861
8862    if {![info exists markedid]} return
8863    if {![commitinview $markedid $curview] ||
8864        ![commitinview $rowmenuid $curview]} return
8865    #set t1 [clock clicks -milliseconds]
8866    set l1 [list [rowofcommit $markedid]]
8867    set l2 [list [rowofcommit $rowmenuid]]
8868    while 1 {
8869        set r1 [lindex $l1 0]
8870        set r2 [lindex $l2 0]
8871        if {$r1 eq {} || $r2 eq {}} break
8872        if {$r1 == $r2} {
8873            selectline $r1 1
8874            break
8875        }
8876        if {$r1 > $r2} {
8877            set l1 [replace_by_kids $l1 $r1]
8878        } else {
8879            set l2 [replace_by_kids $l2 $r2]
8880        }
8881    }
8882    #set t2 [clock clicks -milliseconds]
8883    #puts "took [expr {$t2-$t1}]ms"
8884}
8885
8886proc compare_commits {} {
8887    global markedid rowmenuid curview children
8888
8889    if {![info exists markedid]} return
8890    if {![commitinview $markedid $curview]} return
8891    addtohistory [list do_cmp_commits $markedid $rowmenuid]
8892    do_cmp_commits $markedid $rowmenuid
8893}
8894
8895proc getpatchid {id} {
8896    global patchids
8897
8898    if {![info exists patchids($id)]} {
8899        set cmd [diffcmd [list $id] {-p --root}]
8900        # trim off the initial "|"
8901        set cmd [lrange $cmd 1 end]
8902        if {[catch {
8903            set x [eval exec $cmd | git patch-id]
8904            set patchids($id) [lindex $x 0]
8905        }]} {
8906            set patchids($id) "error"
8907        }
8908    }
8909    return $patchids($id)
8910}
8911
8912proc do_cmp_commits {a b} {
8913    global ctext curview parents children patchids commitinfo
8914
8915    $ctext conf -state normal
8916    clear_ctext
8917    init_flist {}
8918    for {set i 0} {$i < 100} {incr i} {
8919        set skipa 0
8920        set skipb 0
8921        if {[llength $parents($curview,$a)] > 1} {
8922            appendshortlink $a [mc "Skipping merge commit "] "\n"
8923            set skipa 1
8924        } else {
8925            set patcha [getpatchid $a]
8926        }
8927        if {[llength $parents($curview,$b)] > 1} {
8928            appendshortlink $b [mc "Skipping merge commit "] "\n"
8929            set skipb 1
8930        } else {
8931            set patchb [getpatchid $b]
8932        }
8933        if {!$skipa && !$skipb} {
8934            set heada [lindex $commitinfo($a) 0]
8935            set headb [lindex $commitinfo($b) 0]
8936            if {$patcha eq "error"} {
8937                appendshortlink $a [mc "Error getting patch ID for "] \
8938                    [mc " - stopping\n"]
8939                break
8940            }
8941            if {$patchb eq "error"} {
8942                appendshortlink $b [mc "Error getting patch ID for "] \
8943                    [mc " - stopping\n"]
8944                break
8945            }
8946            if {$patcha eq $patchb} {
8947                if {$heada eq $headb} {
8948                    appendshortlink $a [mc "Commit "]
8949                    appendshortlink $b " == " "  $heada\n"
8950                } else {
8951                    appendshortlink $a [mc "Commit "] "  $heada\n"
8952                    appendshortlink $b [mc " is the same patch as\n       "] \
8953                        "  $headb\n"
8954                }
8955                set skipa 1
8956                set skipb 1
8957            } else {
8958                $ctext insert end "\n"
8959                appendshortlink $a [mc "Commit "] "  $heada\n"
8960                appendshortlink $b [mc " differs from\n       "] \
8961                    "  $headb\n"
8962                $ctext insert end [mc "Diff of commits:\n\n"]
8963                $ctext conf -state disabled
8964                update
8965                diffcommits $a $b
8966                return
8967            }
8968        }
8969        if {$skipa} {
8970            set kids [real_children $curview,$a]
8971            if {[llength $kids] != 1} {
8972                $ctext insert end "\n"
8973                appendshortlink $a [mc "Commit "] \
8974                    [mc " has %s children - stopping\n" [llength $kids]]
8975                break
8976            }
8977            set a [lindex $kids 0]
8978        }
8979        if {$skipb} {
8980            set kids [real_children $curview,$b]
8981            if {[llength $kids] != 1} {
8982                appendshortlink $b [mc "Commit "] \
8983                    [mc " has %s children - stopping\n" [llength $kids]]
8984                break
8985            }
8986            set b [lindex $kids 0]
8987        }
8988    }
8989    $ctext conf -state disabled
8990}
8991
8992proc diffcommits {a b} {
8993    global diffcontext diffids blobdifffd diffinhdr currdiffsubmod
8994
8995    set tmpdir [gitknewtmpdir]
8996    set fna [file join $tmpdir "commit-[string range $a 0 7]"]
8997    set fnb [file join $tmpdir "commit-[string range $b 0 7]"]
8998    if {[catch {
8999        exec git diff-tree -p --pretty $a >$fna
9000        exec git diff-tree -p --pretty $b >$fnb
9001    } err]} {
9002        error_popup [mc "Error writing commit to file: %s" $err]
9003        return
9004    }
9005    if {[catch {
9006        set fd [open "| diff -U$diffcontext $fna $fnb" r]
9007    } err]} {
9008        error_popup [mc "Error diffing commits: %s" $err]
9009        return
9010    }
9011    set diffids [list commits $a $b]
9012    set blobdifffd($diffids) $fd
9013    set diffinhdr 0
9014    set currdiffsubmod ""
9015    filerun $fd [list getblobdiffline $fd $diffids]
9016}
9017
9018proc diffvssel {dirn} {
9019    global rowmenuid selectedline
9020
9021    if {$selectedline eq {}} return
9022    if {$dirn} {
9023        set oldid [commitonrow $selectedline]
9024        set newid $rowmenuid
9025    } else {
9026        set oldid $rowmenuid
9027        set newid [commitonrow $selectedline]
9028    }
9029    addtohistory [list doseldiff $oldid $newid] savectextpos
9030    doseldiff $oldid $newid
9031}
9032
9033proc diffvsmark {dirn} {
9034    global rowmenuid markedid
9035
9036    if {![info exists markedid]} return
9037    if {$dirn} {
9038        set oldid $markedid
9039        set newid $rowmenuid
9040    } else {
9041        set oldid $rowmenuid
9042        set newid $markedid
9043    }
9044    addtohistory [list doseldiff $oldid $newid] savectextpos
9045    doseldiff $oldid $newid
9046}
9047
9048proc doseldiff {oldid newid} {
9049    global ctext
9050    global commitinfo
9051
9052    $ctext conf -state normal
9053    clear_ctext
9054    init_flist [mc "Top"]
9055    $ctext insert end "[mc "From"] "
9056    $ctext insert end $oldid link0
9057    setlink $oldid link0
9058    $ctext insert end "\n     "
9059    $ctext insert end [lindex $commitinfo($oldid) 0]
9060    $ctext insert end "\n\n[mc "To"]   "
9061    $ctext insert end $newid link1
9062    setlink $newid link1
9063    $ctext insert end "\n     "
9064    $ctext insert end [lindex $commitinfo($newid) 0]
9065    $ctext insert end "\n"
9066    $ctext conf -state disabled
9067    $ctext tag remove found 1.0 end
9068    startdiff [list $oldid $newid]
9069}
9070
9071proc mkpatch {} {
9072    global rowmenuid currentid commitinfo patchtop patchnum NS
9073
9074    if {![info exists currentid]} return
9075    set oldid $currentid
9076    set oldhead [lindex $commitinfo($oldid) 0]
9077    set newid $rowmenuid
9078    set newhead [lindex $commitinfo($newid) 0]
9079    set top .patch
9080    set patchtop $top
9081    catch {destroy $top}
9082    ttk_toplevel $top
9083    make_transient $top .
9084    ${NS}::label $top.title -text [mc "Generate patch"]
9085    grid $top.title - -pady 10
9086    ${NS}::label $top.from -text [mc "From:"]
9087    ${NS}::entry $top.fromsha1 -width 40
9088    $top.fromsha1 insert 0 $oldid
9089    $top.fromsha1 conf -state readonly
9090    grid $top.from $top.fromsha1 -sticky w
9091    ${NS}::entry $top.fromhead -width 60
9092    $top.fromhead insert 0 $oldhead
9093    $top.fromhead conf -state readonly
9094    grid x $top.fromhead -sticky w
9095    ${NS}::label $top.to -text [mc "To:"]
9096    ${NS}::entry $top.tosha1 -width 40
9097    $top.tosha1 insert 0 $newid
9098    $top.tosha1 conf -state readonly
9099    grid $top.to $top.tosha1 -sticky w
9100    ${NS}::entry $top.tohead -width 60
9101    $top.tohead insert 0 $newhead
9102    $top.tohead conf -state readonly
9103    grid x $top.tohead -sticky w
9104    ${NS}::button $top.rev -text [mc "Reverse"] -command mkpatchrev
9105    grid $top.rev x -pady 10 -padx 5
9106    ${NS}::label $top.flab -text [mc "Output file:"]
9107    ${NS}::entry $top.fname -width 60
9108    $top.fname insert 0 [file normalize "patch$patchnum.patch"]
9109    incr patchnum
9110    grid $top.flab $top.fname -sticky w
9111    ${NS}::frame $top.buts
9112    ${NS}::button $top.buts.gen -text [mc "Generate"] -command mkpatchgo
9113    ${NS}::button $top.buts.can -text [mc "Cancel"] -command mkpatchcan
9114    bind $top <Key-Return> mkpatchgo
9115    bind $top <Key-Escape> mkpatchcan
9116    grid $top.buts.gen $top.buts.can
9117    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9118    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9119    grid $top.buts - -pady 10 -sticky ew
9120    focus $top.fname
9121}
9122
9123proc mkpatchrev {} {
9124    global patchtop
9125
9126    set oldid [$patchtop.fromsha1 get]
9127    set oldhead [$patchtop.fromhead get]
9128    set newid [$patchtop.tosha1 get]
9129    set newhead [$patchtop.tohead get]
9130    foreach e [list fromsha1 fromhead tosha1 tohead] \
9131            v [list $newid $newhead $oldid $oldhead] {
9132        $patchtop.$e conf -state normal
9133        $patchtop.$e delete 0 end
9134        $patchtop.$e insert 0 $v
9135        $patchtop.$e conf -state readonly
9136    }
9137}
9138
9139proc mkpatchgo {} {
9140    global patchtop nullid nullid2
9141
9142    set oldid [$patchtop.fromsha1 get]
9143    set newid [$patchtop.tosha1 get]
9144    set fname [$patchtop.fname get]
9145    set cmd [diffcmd [list $oldid $newid] -p]
9146    # trim off the initial "|"
9147    set cmd [lrange $cmd 1 end]
9148    lappend cmd >$fname &
9149    if {[catch {eval exec $cmd} err]} {
9150        error_popup "[mc "Error creating patch:"] $err" $patchtop
9151    }
9152    catch {destroy $patchtop}
9153    unset patchtop
9154}
9155
9156proc mkpatchcan {} {
9157    global patchtop
9158
9159    catch {destroy $patchtop}
9160    unset patchtop
9161}
9162
9163proc mktag {} {
9164    global rowmenuid mktagtop commitinfo NS
9165
9166    set top .maketag
9167    set mktagtop $top
9168    catch {destroy $top}
9169    ttk_toplevel $top
9170    make_transient $top .
9171    ${NS}::label $top.title -text [mc "Create tag"]
9172    grid $top.title - -pady 10
9173    ${NS}::label $top.id -text [mc "ID:"]
9174    ${NS}::entry $top.sha1 -width 40
9175    $top.sha1 insert 0 $rowmenuid
9176    $top.sha1 conf -state readonly
9177    grid $top.id $top.sha1 -sticky w
9178    ${NS}::entry $top.head -width 60
9179    $top.head insert 0 [lindex $commitinfo($rowmenuid) 0]
9180    $top.head conf -state readonly
9181    grid x $top.head -sticky w
9182    ${NS}::label $top.tlab -text [mc "Tag name:"]
9183    ${NS}::entry $top.tag -width 60
9184    grid $top.tlab $top.tag -sticky w
9185    ${NS}::label $top.op -text [mc "Tag message is optional"]
9186    grid $top.op -columnspan 2 -sticky we
9187    ${NS}::label $top.mlab -text [mc "Tag message:"]
9188    ${NS}::entry $top.msg -width 60
9189    grid $top.mlab $top.msg -sticky w
9190    ${NS}::frame $top.buts
9191    ${NS}::button $top.buts.gen -text [mc "Create"] -command mktaggo
9192    ${NS}::button $top.buts.can -text [mc "Cancel"] -command mktagcan
9193    bind $top <Key-Return> mktaggo
9194    bind $top <Key-Escape> mktagcan
9195    grid $top.buts.gen $top.buts.can
9196    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9197    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9198    grid $top.buts - -pady 10 -sticky ew
9199    focus $top.tag
9200}
9201
9202proc domktag {} {
9203    global mktagtop env tagids idtags
9204
9205    set id [$mktagtop.sha1 get]
9206    set tag [$mktagtop.tag get]
9207    set msg [$mktagtop.msg get]
9208    if {$tag == {}} {
9209        error_popup [mc "No tag name specified"] $mktagtop
9210        return 0
9211    }
9212    if {[info exists tagids($tag)]} {
9213        error_popup [mc "Tag \"%s\" already exists" $tag] $mktagtop
9214        return 0
9215    }
9216    if {[catch {
9217        if {$msg != {}} {
9218            exec git tag -a -m $msg $tag $id
9219        } else {
9220            exec git tag $tag $id
9221        }
9222    } err]} {
9223        error_popup "[mc "Error creating tag:"] $err" $mktagtop
9224        return 0
9225    }
9226
9227    set tagids($tag) $id
9228    lappend idtags($id) $tag
9229    redrawtags $id
9230    addedtag $id
9231    dispneartags 0
9232    run refill_reflist
9233    return 1
9234}
9235
9236proc redrawtags {id} {
9237    global canv linehtag idpos currentid curview cmitlisted markedid
9238    global canvxmax iddrawn circleitem mainheadid circlecolors
9239    global mainheadcirclecolor
9240
9241    if {![commitinview $id $curview]} return
9242    if {![info exists iddrawn($id)]} return
9243    set row [rowofcommit $id]
9244    if {$id eq $mainheadid} {
9245        set ofill $mainheadcirclecolor
9246    } else {
9247        set ofill [lindex $circlecolors $cmitlisted($curview,$id)]
9248    }
9249    $canv itemconf $circleitem($row) -fill $ofill
9250    $canv delete tag.$id
9251    set xt [eval drawtags $id $idpos($id)]
9252    $canv coords $linehtag($id) $xt [lindex $idpos($id) 2]
9253    set text [$canv itemcget $linehtag($id) -text]
9254    set font [$canv itemcget $linehtag($id) -font]
9255    set xr [expr {$xt + [font measure $font $text]}]
9256    if {$xr > $canvxmax} {
9257        set canvxmax $xr
9258        setcanvscroll
9259    }
9260    if {[info exists currentid] && $currentid == $id} {
9261        make_secsel $id
9262    }
9263    if {[info exists markedid] && $markedid eq $id} {
9264        make_idmark $id
9265    }
9266}
9267
9268proc mktagcan {} {
9269    global mktagtop
9270
9271    catch {destroy $mktagtop}
9272    unset mktagtop
9273}
9274
9275proc mktaggo {} {
9276    if {![domktag]} return
9277    mktagcan
9278}
9279
9280proc writecommit {} {
9281    global rowmenuid wrcomtop commitinfo wrcomcmd NS
9282
9283    set top .writecommit
9284    set wrcomtop $top
9285    catch {destroy $top}
9286    ttk_toplevel $top
9287    make_transient $top .
9288    ${NS}::label $top.title -text [mc "Write commit to file"]
9289    grid $top.title - -pady 10
9290    ${NS}::label $top.id -text [mc "ID:"]
9291    ${NS}::entry $top.sha1 -width 40
9292    $top.sha1 insert 0 $rowmenuid
9293    $top.sha1 conf -state readonly
9294    grid $top.id $top.sha1 -sticky w
9295    ${NS}::entry $top.head -width 60
9296    $top.head insert 0 [lindex $commitinfo($rowmenuid) 0]
9297    $top.head conf -state readonly
9298    grid x $top.head -sticky w
9299    ${NS}::label $top.clab -text [mc "Command:"]
9300    ${NS}::entry $top.cmd -width 60 -textvariable wrcomcmd
9301    grid $top.clab $top.cmd -sticky w -pady 10
9302    ${NS}::label $top.flab -text [mc "Output file:"]
9303    ${NS}::entry $top.fname -width 60
9304    $top.fname insert 0 [file normalize "commit-[string range $rowmenuid 0 6]"]
9305    grid $top.flab $top.fname -sticky w
9306    ${NS}::frame $top.buts
9307    ${NS}::button $top.buts.gen -text [mc "Write"] -command wrcomgo
9308    ${NS}::button $top.buts.can -text [mc "Cancel"] -command wrcomcan
9309    bind $top <Key-Return> wrcomgo
9310    bind $top <Key-Escape> wrcomcan
9311    grid $top.buts.gen $top.buts.can
9312    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9313    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9314    grid $top.buts - -pady 10 -sticky ew
9315    focus $top.fname
9316}
9317
9318proc wrcomgo {} {
9319    global wrcomtop
9320
9321    set id [$wrcomtop.sha1 get]
9322    set cmd "echo $id | [$wrcomtop.cmd get]"
9323    set fname [$wrcomtop.fname get]
9324    if {[catch {exec sh -c $cmd >$fname &} err]} {
9325        error_popup "[mc "Error writing commit:"] $err" $wrcomtop
9326    }
9327    catch {destroy $wrcomtop}
9328    unset wrcomtop
9329}
9330
9331proc wrcomcan {} {
9332    global wrcomtop
9333
9334    catch {destroy $wrcomtop}
9335    unset wrcomtop
9336}
9337
9338proc mkbranch {} {
9339    global rowmenuid mkbrtop NS
9340
9341    set top .makebranch
9342    catch {destroy $top}
9343    ttk_toplevel $top
9344    make_transient $top .
9345    ${NS}::label $top.title -text [mc "Create new branch"]
9346    grid $top.title - -pady 10
9347    ${NS}::label $top.id -text [mc "ID:"]
9348    ${NS}::entry $top.sha1 -width 40
9349    $top.sha1 insert 0 $rowmenuid
9350    $top.sha1 conf -state readonly
9351    grid $top.id $top.sha1 -sticky w
9352    ${NS}::label $top.nlab -text [mc "Name:"]
9353    ${NS}::entry $top.name -width 40
9354    grid $top.nlab $top.name -sticky w
9355    ${NS}::frame $top.buts
9356    ${NS}::button $top.buts.go -text [mc "Create"] -command [list mkbrgo $top]
9357    ${NS}::button $top.buts.can -text [mc "Cancel"] -command "catch {destroy $top}"
9358    bind $top <Key-Return> [list mkbrgo $top]
9359    bind $top <Key-Escape> "catch {destroy $top}"
9360    grid $top.buts.go $top.buts.can
9361    grid columnconfigure $top.buts 0 -weight 1 -uniform a
9362    grid columnconfigure $top.buts 1 -weight 1 -uniform a
9363    grid $top.buts - -pady 10 -sticky ew
9364    focus $top.name
9365}
9366
9367proc mkbrgo {top} {
9368    global headids idheads
9369
9370    set name [$top.name get]
9371    set id [$top.sha1 get]
9372    set cmdargs {}
9373    set old_id {}
9374    if {$name eq {}} {
9375        error_popup [mc "Please specify a name for the new branch"] $top
9376        return
9377    }
9378    if {[info exists headids($name)]} {
9379        if {![confirm_popup [mc \
9380                "Branch '%s' already exists. Overwrite?" $name] $top]} {
9381            return
9382        }
9383        set old_id $headids($name)
9384        lappend cmdargs -f
9385    }
9386    catch {destroy $top}
9387    lappend cmdargs $name $id
9388    nowbusy newbranch
9389    update
9390    if {[catch {
9391        eval exec git branch $cmdargs
9392    } err]} {
9393        notbusy newbranch
9394        error_popup $err
9395    } else {
9396        notbusy newbranch
9397        if {$old_id ne {}} {
9398            movehead $id $name
9399            movedhead $id $name
9400            redrawtags $old_id
9401            redrawtags $id
9402        } else {
9403            set headids($name) $id
9404            lappend idheads($id) $name
9405            addedhead $id $name
9406            redrawtags $id
9407        }
9408        dispneartags 0
9409        run refill_reflist
9410    }
9411}
9412
9413proc exec_citool {tool_args {baseid {}}} {
9414    global commitinfo env
9415
9416    set save_env [array get env GIT_AUTHOR_*]
9417
9418    if {$baseid ne {}} {
9419        if {![info exists commitinfo($baseid)]} {
9420            getcommit $baseid
9421        }
9422        set author [lindex $commitinfo($baseid) 1]
9423        set date [lindex $commitinfo($baseid) 2]
9424        if {[regexp {^\s*(\S.*\S|\S)\s*<(.*)>\s*$} \
9425                    $author author name email]
9426            && $date ne {}} {
9427            set env(GIT_AUTHOR_NAME) $name
9428            set env(GIT_AUTHOR_EMAIL) $email
9429            set env(GIT_AUTHOR_DATE) $date
9430        }
9431    }
9432
9433    eval exec git citool $tool_args &
9434
9435    array unset env GIT_AUTHOR_*
9436    array set env $save_env
9437}
9438
9439proc cherrypick {} {
9440    global rowmenuid curview
9441    global mainhead mainheadid
9442    global gitdir
9443
9444    set oldhead [exec git rev-parse HEAD]
9445    set dheads [descheads $rowmenuid]
9446    if {$dheads ne {} && [lsearch -exact $dheads $oldhead] >= 0} {
9447        set ok [confirm_popup [mc "Commit %s is already\
9448                included in branch %s -- really re-apply it?" \
9449                                   [string range $rowmenuid 0 7] $mainhead]]
9450        if {!$ok} return
9451    }
9452    nowbusy cherrypick [mc "Cherry-picking"]
9453    update
9454    # Unfortunately git-cherry-pick writes stuff to stderr even when
9455    # no error occurs, and exec takes that as an indication of error...
9456    if {[catch {exec sh -c "git cherry-pick -r $rowmenuid 2>&1"} err]} {
9457        notbusy cherrypick
9458        if {[regexp -line \
9459                 {Entry '(.*)' (would be overwritten by merge|not uptodate)} \
9460                 $err msg fname]} {
9461            error_popup [mc "Cherry-pick failed because of local changes\
9462                        to file '%s'.\nPlease commit, reset or stash\
9463                        your changes and try again." $fname]
9464        } elseif {[regexp -line \
9465                       {^(CONFLICT \(.*\):|Automatic cherry-pick failed|error: could not apply)} \
9466                       $err]} {
9467            if {[confirm_popup [mc "Cherry-pick failed because of merge\
9468                        conflict.\nDo you wish to run git citool to\
9469                        resolve it?"]]} {
9470                # Force citool to read MERGE_MSG
9471                file delete [file join $gitdir "GITGUI_MSG"]
9472                exec_citool {} $rowmenuid
9473            }
9474        } else {
9475            error_popup $err
9476        }
9477        run updatecommits
9478        return
9479    }
9480    set newhead [exec git rev-parse HEAD]
9481    if {$newhead eq $oldhead} {
9482        notbusy cherrypick
9483        error_popup [mc "No changes committed"]
9484        return
9485    }
9486    addnewchild $newhead $oldhead
9487    if {[commitinview $oldhead $curview]} {
9488        # XXX this isn't right if we have a path limit...
9489        insertrow $newhead $oldhead $curview
9490        if {$mainhead ne {}} {
9491            movehead $newhead $mainhead
9492            movedhead $newhead $mainhead
9493        }
9494        set mainheadid $newhead
9495        redrawtags $oldhead
9496        redrawtags $newhead
9497        selbyid $newhead
9498    }
9499    notbusy cherrypick
9500}
9501
9502proc revert {} {
9503    global rowmenuid curview
9504    global mainhead mainheadid
9505    global gitdir
9506
9507    set oldhead [exec git rev-parse HEAD]
9508    set dheads [descheads $rowmenuid]
9509    if { $dheads eq {} || [lsearch -exact $dheads $oldhead] == -1 } {
9510       set ok [confirm_popup [mc "Commit %s is not\
9511           included in branch %s -- really revert it?" \
9512                      [string range $rowmenuid 0 7] $mainhead]]
9513       if {!$ok} return
9514    }
9515    nowbusy revert [mc "Reverting"]
9516    update
9517
9518    if [catch {exec git revert --no-edit $rowmenuid} err] {
9519        notbusy revert
9520        if [regexp {files would be overwritten by merge:(\n(( |\t)+[^\n]+\n)+)}\
9521                $err match files] {
9522            regsub {\n( |\t)+} $files "\n" files
9523            error_popup [mc "Revert failed because of local changes to\
9524                the following files:%s Please commit, reset or stash \
9525                your changes and try again." $files]
9526        } elseif [regexp {error: could not revert} $err] {
9527            if [confirm_popup [mc "Revert failed because of merge conflict.\n\
9528                Do you wish to run git citool to resolve it?"]] {
9529                # Force citool to read MERGE_MSG
9530                file delete [file join $gitdir "GITGUI_MSG"]
9531                exec_citool {} $rowmenuid
9532            }
9533        } else { error_popup $err }
9534        run updatecommits
9535        return
9536    }
9537
9538    set newhead [exec git rev-parse HEAD]
9539    if { $newhead eq $oldhead } {
9540        notbusy revert
9541        error_popup [mc "No changes committed"]
9542        return
9543    }
9544
9545    addnewchild $newhead $oldhead
9546
9547    if [commitinview $oldhead $curview] {
9548        # XXX this isn't right if we have a path limit...
9549        insertrow $newhead $oldhead $curview
9550        if {$mainhead ne {}} {
9551            movehead $newhead $mainhead
9552            movedhead $newhead $mainhead
9553        }
9554        set mainheadid $newhead
9555        redrawtags $oldhead
9556        redrawtags $newhead
9557        selbyid $newhead
9558    }
9559
9560    notbusy revert
9561}
9562
9563proc resethead {} {
9564    global mainhead rowmenuid confirm_ok resettype NS
9565
9566    set confirm_ok 0
9567    set w ".confirmreset"
9568    ttk_toplevel $w
9569    make_transient $w .
9570    wm title $w [mc "Confirm reset"]
9571    ${NS}::label $w.m -text \
9572        [mc "Reset branch %s to %s?" $mainhead [string range $rowmenuid 0 7]]
9573    pack $w.m -side top -fill x -padx 20 -pady 20
9574    ${NS}::labelframe $w.f -text [mc "Reset type:"]
9575    set resettype mixed
9576    ${NS}::radiobutton $w.f.soft -value soft -variable resettype \
9577        -text [mc "Soft: Leave working tree and index untouched"]
9578    grid $w.f.soft -sticky w
9579    ${NS}::radiobutton $w.f.mixed -value mixed -variable resettype \
9580        -text [mc "Mixed: Leave working tree untouched, reset index"]
9581    grid $w.f.mixed -sticky w
9582    ${NS}::radiobutton $w.f.hard -value hard -variable resettype \
9583        -text [mc "Hard: Reset working tree and index\n(discard ALL local changes)"]
9584    grid $w.f.hard -sticky w
9585    pack $w.f -side top -fill x -padx 4
9586    ${NS}::button $w.ok -text [mc OK] -command "set confirm_ok 1; destroy $w"
9587    pack $w.ok -side left -fill x -padx 20 -pady 20
9588    ${NS}::button $w.cancel -text [mc Cancel] -command "destroy $w"
9589    bind $w <Key-Escape> [list destroy $w]
9590    pack $w.cancel -side right -fill x -padx 20 -pady 20
9591    bind $w <Visibility> "grab $w; focus $w"
9592    tkwait window $w
9593    if {!$confirm_ok} return
9594    if {[catch {set fd [open \
9595            [list | git reset --$resettype $rowmenuid 2>@1] r]} err]} {
9596        error_popup $err
9597    } else {
9598        dohidelocalchanges
9599        filerun $fd [list readresetstat $fd]
9600        nowbusy reset [mc "Resetting"]
9601        selbyid $rowmenuid
9602    }
9603}
9604
9605proc readresetstat {fd} {
9606    global mainhead mainheadid showlocalchanges rprogcoord
9607
9608    if {[gets $fd line] >= 0} {
9609        if {[regexp {([0-9]+)% \(([0-9]+)/([0-9]+)\)} $line match p m n]} {
9610            set rprogcoord [expr {1.0 * $m / $n}]
9611            adjustprogress
9612        }
9613        return 1
9614    }
9615    set rprogcoord 0
9616    adjustprogress
9617    notbusy reset
9618    if {[catch {close $fd} err]} {
9619        error_popup $err
9620    }
9621    set oldhead $mainheadid
9622    set newhead [exec git rev-parse HEAD]
9623    if {$newhead ne $oldhead} {
9624        movehead $newhead $mainhead
9625        movedhead $newhead $mainhead
9626        set mainheadid $newhead
9627        redrawtags $oldhead
9628        redrawtags $newhead
9629    }
9630    if {$showlocalchanges} {
9631        doshowlocalchanges
9632    }
9633    return 0
9634}
9635
9636# context menu for a head
9637proc headmenu {x y id head} {
9638    global headmenuid headmenuhead headctxmenu mainhead
9639
9640    stopfinding
9641    set headmenuid $id
9642    set headmenuhead $head
9643    set state normal
9644    if {[string match "remotes/*" $head]} {
9645        set state disabled
9646    }
9647    if {$head eq $mainhead} {
9648        set state disabled
9649    }
9650    $headctxmenu entryconfigure 0 -state $state
9651    $headctxmenu entryconfigure 1 -state $state
9652    tk_popup $headctxmenu $x $y
9653}
9654
9655proc cobranch {} {
9656    global headmenuid headmenuhead headids
9657    global showlocalchanges
9658
9659    # check the tree is clean first??
9660    nowbusy checkout [mc "Checking out"]
9661    update
9662    dohidelocalchanges
9663    if {[catch {
9664        set fd [open [list | git checkout $headmenuhead 2>@1] r]
9665    } err]} {
9666        notbusy checkout
9667        error_popup $err
9668        if {$showlocalchanges} {
9669            dodiffindex
9670        }
9671    } else {
9672        filerun $fd [list readcheckoutstat $fd $headmenuhead $headmenuid]
9673    }
9674}
9675
9676proc readcheckoutstat {fd newhead newheadid} {
9677    global mainhead mainheadid headids showlocalchanges progresscoords
9678    global viewmainheadid curview
9679
9680    if {[gets $fd line] >= 0} {
9681        if {[regexp {([0-9]+)% \(([0-9]+)/([0-9]+)\)} $line match p m n]} {
9682            set progresscoords [list 0 [expr {1.0 * $m / $n}]]
9683            adjustprogress
9684        }
9685        return 1
9686    }
9687    set progresscoords {0 0}
9688    adjustprogress
9689    notbusy checkout
9690    if {[catch {close $fd} err]} {
9691        error_popup $err
9692    }
9693    set oldmainid $mainheadid
9694    set mainhead $newhead
9695    set mainheadid $newheadid
9696    set viewmainheadid($curview) $newheadid
9697    redrawtags $oldmainid
9698    redrawtags $newheadid
9699    selbyid $newheadid
9700    if {$showlocalchanges} {
9701        dodiffindex
9702    }
9703}
9704
9705proc rmbranch {} {
9706    global headmenuid headmenuhead mainhead
9707    global idheads
9708
9709    set head $headmenuhead
9710    set id $headmenuid
9711    # this check shouldn't be needed any more...
9712    if {$head eq $mainhead} {
9713        error_popup [mc "Cannot delete the currently checked-out branch"]
9714        return
9715    }
9716    set dheads [descheads $id]
9717    if {[llength $dheads] == 1 && $idheads($dheads) eq $head} {
9718        # the stuff on this branch isn't on any other branch
9719        if {![confirm_popup [mc "The commits on branch %s aren't on any other\
9720                        branch.\nReally delete branch %s?" $head $head]]} return
9721    }
9722    nowbusy rmbranch
9723    update
9724    if {[catch {exec git branch -D $head} err]} {
9725        notbusy rmbranch
9726        error_popup $err
9727        return
9728    }
9729    removehead $id $head
9730    removedhead $id $head
9731    redrawtags $id
9732    notbusy rmbranch
9733    dispneartags 0
9734    run refill_reflist
9735}
9736
9737# Display a list of tags and heads
9738proc showrefs {} {
9739    global showrefstop bgcolor fgcolor selectbgcolor NS
9740    global bglist fglist reflistfilter reflist maincursor
9741
9742    set top .showrefs
9743    set showrefstop $top
9744    if {[winfo exists $top]} {
9745        raise $top
9746        refill_reflist
9747        return
9748    }
9749    ttk_toplevel $top
9750    wm title $top [mc "Tags and heads: %s" [file tail [pwd]]]
9751    make_transient $top .
9752    text $top.list -background $bgcolor -foreground $fgcolor \
9753        -selectbackground $selectbgcolor -font mainfont \
9754        -xscrollcommand "$top.xsb set" -yscrollcommand "$top.ysb set" \
9755        -width 30 -height 20 -cursor $maincursor \
9756        -spacing1 1 -spacing3 1 -state disabled
9757    $top.list tag configure highlight -background $selectbgcolor
9758    lappend bglist $top.list
9759    lappend fglist $top.list
9760    ${NS}::scrollbar $top.ysb -command "$top.list yview" -orient vertical
9761    ${NS}::scrollbar $top.xsb -command "$top.list xview" -orient horizontal
9762    grid $top.list $top.ysb -sticky nsew
9763    grid $top.xsb x -sticky ew
9764    ${NS}::frame $top.f
9765    ${NS}::label $top.f.l -text "[mc "Filter"]: "
9766    ${NS}::entry $top.f.e -width 20 -textvariable reflistfilter
9767    set reflistfilter "*"
9768    trace add variable reflistfilter write reflistfilter_change
9769    pack $top.f.e -side right -fill x -expand 1
9770    pack $top.f.l -side left
9771    grid $top.f - -sticky ew -pady 2
9772    ${NS}::button $top.close -command [list destroy $top] -text [mc "Close"]
9773    bind $top <Key-Escape> [list destroy $top]
9774    grid $top.close -
9775    grid columnconfigure $top 0 -weight 1
9776    grid rowconfigure $top 0 -weight 1
9777    bind $top.list <1> {break}
9778    bind $top.list <B1-Motion> {break}
9779    bind $top.list <ButtonRelease-1> {sel_reflist %W %x %y; break}
9780    set reflist {}
9781    refill_reflist
9782}
9783
9784proc sel_reflist {w x y} {
9785    global showrefstop reflist headids tagids otherrefids
9786
9787    if {![winfo exists $showrefstop]} return
9788    set l [lindex [split [$w index "@$x,$y"] "."] 0]
9789    set ref [lindex $reflist [expr {$l-1}]]
9790    set n [lindex $ref 0]
9791    switch -- [lindex $ref 1] {
9792        "H" {selbyid $headids($n)}
9793        "T" {selbyid $tagids($n)}
9794        "o" {selbyid $otherrefids($n)}
9795    }
9796    $showrefstop.list tag add highlight $l.0 "$l.0 lineend"
9797}
9798
9799proc unsel_reflist {} {
9800    global showrefstop
9801
9802    if {![info exists showrefstop] || ![winfo exists $showrefstop]} return
9803    $showrefstop.list tag remove highlight 0.0 end
9804}
9805
9806proc reflistfilter_change {n1 n2 op} {
9807    global reflistfilter
9808
9809    after cancel refill_reflist
9810    after 200 refill_reflist
9811}
9812
9813proc refill_reflist {} {
9814    global reflist reflistfilter showrefstop headids tagids otherrefids
9815    global curview
9816
9817    if {![info exists showrefstop] || ![winfo exists $showrefstop]} return
9818    set refs {}
9819    foreach n [array names headids] {
9820        if {[string match $reflistfilter $n]} {
9821            if {[commitinview $headids($n) $curview]} {
9822                lappend refs [list $n H]
9823            } else {
9824                interestedin $headids($n) {run refill_reflist}
9825            }
9826        }
9827    }
9828    foreach n [array names tagids] {
9829        if {[string match $reflistfilter $n]} {
9830            if {[commitinview $tagids($n) $curview]} {
9831                lappend refs [list $n T]
9832            } else {
9833                interestedin $tagids($n) {run refill_reflist}
9834            }
9835        }
9836    }
9837    foreach n [array names otherrefids] {
9838        if {[string match $reflistfilter $n]} {
9839            if {[commitinview $otherrefids($n) $curview]} {
9840                lappend refs [list $n o]
9841            } else {
9842                interestedin $otherrefids($n) {run refill_reflist}
9843            }
9844        }
9845    }
9846    set refs [lsort -index 0 $refs]
9847    if {$refs eq $reflist} return
9848
9849    # Update the contents of $showrefstop.list according to the
9850    # differences between $reflist (old) and $refs (new)
9851    $showrefstop.list conf -state normal
9852    $showrefstop.list insert end "\n"
9853    set i 0
9854    set j 0
9855    while {$i < [llength $reflist] || $j < [llength $refs]} {
9856        if {$i < [llength $reflist]} {
9857            if {$j < [llength $refs]} {
9858                set cmp [string compare [lindex $reflist $i 0] \
9859                             [lindex $refs $j 0]]
9860                if {$cmp == 0} {
9861                    set cmp [string compare [lindex $reflist $i 1] \
9862                                 [lindex $refs $j 1]]
9863                }
9864            } else {
9865                set cmp -1
9866            }
9867        } else {
9868            set cmp 1
9869        }
9870        switch -- $cmp {
9871            -1 {
9872                $showrefstop.list delete "[expr {$j+1}].0" "[expr {$j+2}].0"
9873                incr i
9874            }
9875            0 {
9876                incr i
9877                incr j
9878            }
9879            1 {
9880                set l [expr {$j + 1}]
9881                $showrefstop.list image create $l.0 -align baseline \
9882                    -image reficon-[lindex $refs $j 1] -padx 2
9883                $showrefstop.list insert $l.1 "[lindex $refs $j 0]\n"
9884                incr j
9885            }
9886        }
9887    }
9888    set reflist $refs
9889    # delete last newline
9890    $showrefstop.list delete end-2c end-1c
9891    $showrefstop.list conf -state disabled
9892}
9893
9894# Stuff for finding nearby tags
9895proc getallcommits {} {
9896    global allcommits nextarc seeds allccache allcwait cachedarcs allcupdate
9897    global idheads idtags idotherrefs allparents tagobjid
9898    global gitdir
9899
9900    if {![info exists allcommits]} {
9901        set nextarc 0
9902        set allcommits 0
9903        set seeds {}
9904        set allcwait 0
9905        set cachedarcs 0
9906        set allccache [file join $gitdir "gitk.cache"]
9907        if {![catch {
9908            set f [open $allccache r]
9909            set allcwait 1
9910            getcache $f
9911        }]} return
9912    }
9913
9914    if {$allcwait} {
9915        return
9916    }
9917    set cmd [list | git rev-list --parents]
9918    set allcupdate [expr {$seeds ne {}}]
9919    if {!$allcupdate} {
9920        set ids "--all"
9921    } else {
9922        set refs [concat [array names idheads] [array names idtags] \
9923                      [array names idotherrefs]]
9924        set ids {}
9925        set tagobjs {}
9926        foreach name [array names tagobjid] {
9927            lappend tagobjs $tagobjid($name)
9928        }
9929        foreach id [lsort -unique $refs] {
9930            if {![info exists allparents($id)] &&
9931                [lsearch -exact $tagobjs $id] < 0} {
9932                lappend ids $id
9933            }
9934        }
9935        if {$ids ne {}} {
9936            foreach id $seeds {
9937                lappend ids "^$id"
9938            }
9939        }
9940    }
9941    if {$ids ne {}} {
9942        set fd [open [concat $cmd $ids] r]
9943        fconfigure $fd -blocking 0
9944        incr allcommits
9945        nowbusy allcommits
9946        filerun $fd [list getallclines $fd]
9947    } else {
9948        dispneartags 0
9949    }
9950}
9951
9952# Since most commits have 1 parent and 1 child, we group strings of
9953# such commits into "arcs" joining branch/merge points (BMPs), which
9954# are commits that either don't have 1 parent or don't have 1 child.
9955#
9956# arcnos(id) - incoming arcs for BMP, arc we're on for other nodes
9957# arcout(id) - outgoing arcs for BMP
9958# arcids(a) - list of IDs on arc including end but not start
9959# arcstart(a) - BMP ID at start of arc
9960# arcend(a) - BMP ID at end of arc
9961# growing(a) - arc a is still growing
9962# arctags(a) - IDs out of arcids (excluding end) that have tags
9963# archeads(a) - IDs out of arcids (excluding end) that have heads
9964# The start of an arc is at the descendent end, so "incoming" means
9965# coming from descendents, and "outgoing" means going towards ancestors.
9966
9967proc getallclines {fd} {
9968    global allparents allchildren idtags idheads nextarc
9969    global arcnos arcids arctags arcout arcend arcstart archeads growing
9970    global seeds allcommits cachedarcs allcupdate
9971
9972    set nid 0
9973    while {[incr nid] <= 1000 && [gets $fd line] >= 0} {
9974        set id [lindex $line 0]
9975        if {[info exists allparents($id)]} {
9976            # seen it already
9977            continue
9978        }
9979        set cachedarcs 0
9980        set olds [lrange $line 1 end]
9981        set allparents($id) $olds
9982        if {![info exists allchildren($id)]} {
9983            set allchildren($id) {}
9984            set arcnos($id) {}
9985            lappend seeds $id
9986        } else {
9987            set a $arcnos($id)
9988            if {[llength $olds] == 1 && [llength $a] == 1} {
9989                lappend arcids($a) $id
9990                if {[info exists idtags($id)]} {
9991                    lappend arctags($a) $id
9992                }
9993                if {[info exists idheads($id)]} {
9994                    lappend archeads($a) $id
9995                }
9996                if {[info exists allparents($olds)]} {
9997                    # seen parent already
9998                    if {![info exists arcout($olds)]} {
9999                        splitarc $olds
10000                    }
10001                    lappend arcids($a) $olds
10002                    set arcend($a) $olds
10003                    unset growing($a)
10004                }
10005                lappend allchildren($olds) $id
10006                lappend arcnos($olds) $a
10007                continue
10008            }
10009        }
10010        foreach a $arcnos($id) {
10011            lappend arcids($a) $id
10012            set arcend($a) $id
10013            unset growing($a)
10014        }
10015
10016        set ao {}
10017        foreach p $olds {
10018            lappend allchildren($p) $id
10019            set a [incr nextarc]
10020            set arcstart($a) $id
10021            set archeads($a) {}
10022            set arctags($a) {}
10023            set archeads($a) {}
10024            set arcids($a) {}
10025            lappend ao $a
10026            set growing($a) 1
10027            if {[info exists allparents($p)]} {
10028                # seen it already, may need to make a new branch
10029                if {![info exists arcout($p)]} {
10030                    splitarc $p
10031                }
10032                lappend arcids($a) $p
10033                set arcend($a) $p
10034                unset growing($a)
10035            }
10036            lappend arcnos($p) $a
10037        }
10038        set arcout($id) $ao
10039    }
10040    if {$nid > 0} {
10041        global cached_dheads cached_dtags cached_atags
10042        catch {unset cached_dheads}
10043        catch {unset cached_dtags}
10044        catch {unset cached_atags}
10045    }
10046    if {![eof $fd]} {
10047        return [expr {$nid >= 1000? 2: 1}]
10048    }
10049    set cacheok 1
10050    if {[catch {
10051        fconfigure $fd -blocking 1
10052        close $fd
10053    } err]} {
10054        # got an error reading the list of commits
10055        # if we were updating, try rereading the whole thing again
10056        if {$allcupdate} {
10057            incr allcommits -1
10058            dropcache $err
10059            return
10060        }
10061        error_popup "[mc "Error reading commit topology information;\
10062                branch and preceding/following tag information\
10063                will be incomplete."]\n($err)"
10064        set cacheok 0
10065    }
10066    if {[incr allcommits -1] == 0} {
10067        notbusy allcommits
10068        if {$cacheok} {
10069            run savecache
10070        }
10071    }
10072    dispneartags 0
10073    return 0
10074}
10075
10076proc recalcarc {a} {
10077    global arctags archeads arcids idtags idheads
10078
10079    set at {}
10080    set ah {}
10081    foreach id [lrange $arcids($a) 0 end-1] {
10082        if {[info exists idtags($id)]} {
10083            lappend at $id
10084        }
10085        if {[info exists idheads($id)]} {
10086            lappend ah $id
10087        }
10088    }
10089    set arctags($a) $at
10090    set archeads($a) $ah
10091}
10092
10093proc splitarc {p} {
10094    global arcnos arcids nextarc arctags archeads idtags idheads
10095    global arcstart arcend arcout allparents growing
10096
10097    set a $arcnos($p)
10098    if {[llength $a] != 1} {
10099        puts "oops splitarc called but [llength $a] arcs already"
10100        return
10101    }
10102    set a [lindex $a 0]
10103    set i [lsearch -exact $arcids($a) $p]
10104    if {$i < 0} {
10105        puts "oops splitarc $p not in arc $a"
10106        return
10107    }
10108    set na [incr nextarc]
10109    if {[info exists arcend($a)]} {
10110        set arcend($na) $arcend($a)
10111    } else {
10112        set l [lindex $allparents([lindex $arcids($a) end]) 0]
10113        set j [lsearch -exact $arcnos($l) $a]
10114        set arcnos($l) [lreplace $arcnos($l) $j $j $na]
10115    }
10116    set tail [lrange $arcids($a) [expr {$i+1}] end]
10117    set arcids($a) [lrange $arcids($a) 0 $i]
10118    set arcend($a) $p
10119    set arcstart($na) $p
10120    set arcout($p) $na
10121    set arcids($na) $tail
10122    if {[info exists growing($a)]} {
10123        set growing($na) 1
10124        unset growing($a)
10125    }
10126
10127    foreach id $tail {
10128        if {[llength $arcnos($id)] == 1} {
10129            set arcnos($id) $na
10130        } else {
10131            set j [lsearch -exact $arcnos($id) $a]
10132            set arcnos($id) [lreplace $arcnos($id) $j $j $na]
10133        }
10134    }
10135
10136    # reconstruct tags and heads lists
10137    if {$arctags($a) ne {} || $archeads($a) ne {}} {
10138        recalcarc $a
10139        recalcarc $na
10140    } else {
10141        set arctags($na) {}
10142        set archeads($na) {}
10143    }
10144}
10145
10146# Update things for a new commit added that is a child of one
10147# existing commit.  Used when cherry-picking.
10148proc addnewchild {id p} {
10149    global allparents allchildren idtags nextarc
10150    global arcnos arcids arctags arcout arcend arcstart archeads growing
10151    global seeds allcommits
10152
10153    if {![info exists allcommits] || ![info exists arcnos($p)]} return
10154    set allparents($id) [list $p]
10155    set allchildren($id) {}
10156    set arcnos($id) {}
10157    lappend seeds $id
10158    lappend allchildren($p) $id
10159    set a [incr nextarc]
10160    set arcstart($a) $id
10161    set archeads($a) {}
10162    set arctags($a) {}
10163    set arcids($a) [list $p]
10164    set arcend($a) $p
10165    if {![info exists arcout($p)]} {
10166        splitarc $p
10167    }
10168    lappend arcnos($p) $a
10169    set arcout($id) [list $a]
10170}
10171
10172# This implements a cache for the topology information.
10173# The cache saves, for each arc, the start and end of the arc,
10174# the ids on the arc, and the outgoing arcs from the end.
10175proc readcache {f} {
10176    global arcnos arcids arcout arcstart arcend arctags archeads nextarc
10177    global idtags idheads allparents cachedarcs possible_seeds seeds growing
10178    global allcwait
10179
10180    set a $nextarc
10181    set lim $cachedarcs
10182    if {$lim - $a > 500} {
10183        set lim [expr {$a + 500}]
10184    }
10185    if {[catch {
10186        if {$a == $lim} {
10187            # finish reading the cache and setting up arctags, etc.
10188            set line [gets $f]
10189            if {$line ne "1"} {error "bad final version"}
10190            close $f
10191            foreach id [array names idtags] {
10192                if {[info exists arcnos($id)] && [llength $arcnos($id)] == 1 &&
10193                    [llength $allparents($id)] == 1} {
10194                    set a [lindex $arcnos($id) 0]
10195                    if {$arctags($a) eq {}} {
10196                        recalcarc $a
10197                    }
10198                }
10199            }
10200            foreach id [array names idheads] {
10201                if {[info exists arcnos($id)] && [llength $arcnos($id)] == 1 &&
10202                    [llength $allparents($id)] == 1} {
10203                    set a [lindex $arcnos($id) 0]
10204                    if {$archeads($a) eq {}} {
10205                        recalcarc $a
10206                    }
10207                }
10208            }
10209            foreach id [lsort -unique $possible_seeds] {
10210                if {$arcnos($id) eq {}} {
10211                    lappend seeds $id
10212                }
10213            }
10214            set allcwait 0
10215        } else {
10216            while {[incr a] <= $lim} {
10217                set line [gets $f]
10218                if {[llength $line] != 3} {error "bad line"}
10219                set s [lindex $line 0]
10220                set arcstart($a) $s
10221                lappend arcout($s) $a
10222                if {![info exists arcnos($s)]} {
10223                    lappend possible_seeds $s
10224                    set arcnos($s) {}
10225                }
10226                set e [lindex $line 1]
10227                if {$e eq {}} {
10228                    set growing($a) 1
10229                } else {
10230                    set arcend($a) $e
10231                    if {![info exists arcout($e)]} {
10232                        set arcout($e) {}
10233                    }
10234                }
10235                set arcids($a) [lindex $line 2]
10236                foreach id $arcids($a) {
10237                    lappend allparents($s) $id
10238                    set s $id
10239                    lappend arcnos($id) $a
10240                }
10241                if {![info exists allparents($s)]} {
10242                    set allparents($s) {}
10243                }
10244                set arctags($a) {}
10245                set archeads($a) {}
10246            }
10247            set nextarc [expr {$a - 1}]
10248        }
10249    } err]} {
10250        dropcache $err
10251        return 0
10252    }
10253    if {!$allcwait} {
10254        getallcommits
10255    }
10256    return $allcwait
10257}
10258
10259proc getcache {f} {
10260    global nextarc cachedarcs possible_seeds
10261
10262    if {[catch {
10263        set line [gets $f]
10264        if {[llength $line] != 2 || [lindex $line 0] ne "1"} {error "bad version"}
10265        # make sure it's an integer
10266        set cachedarcs [expr {int([lindex $line 1])}]
10267        if {$cachedarcs < 0} {error "bad number of arcs"}
10268        set nextarc 0
10269        set possible_seeds {}
10270        run readcache $f
10271    } err]} {
10272        dropcache $err
10273    }
10274    return 0
10275}
10276
10277proc dropcache {err} {
10278    global allcwait nextarc cachedarcs seeds
10279
10280    #puts "dropping cache ($err)"
10281    foreach v {arcnos arcout arcids arcstart arcend growing \
10282                   arctags archeads allparents allchildren} {
10283        global $v
10284        catch {unset $v}
10285    }
10286    set allcwait 0
10287    set nextarc 0
10288    set cachedarcs 0
10289    set seeds {}
10290    getallcommits
10291}
10292
10293proc writecache {f} {
10294    global cachearc cachedarcs allccache
10295    global arcstart arcend arcnos arcids arcout
10296
10297    set a $cachearc
10298    set lim $cachedarcs
10299    if {$lim - $a > 1000} {
10300        set lim [expr {$a + 1000}]
10301    }
10302    if {[catch {
10303        while {[incr a] <= $lim} {
10304            if {[info exists arcend($a)]} {
10305                puts $f [list $arcstart($a) $arcend($a) $arcids($a)]
10306            } else {
10307                puts $f [list $arcstart($a) {} $arcids($a)]
10308            }
10309        }
10310    } err]} {
10311        catch {close $f}
10312        catch {file delete $allccache}
10313        #puts "writing cache failed ($err)"
10314        return 0
10315    }
10316    set cachearc [expr {$a - 1}]
10317    if {$a > $cachedarcs} {
10318        puts $f "1"
10319        close $f
10320        return 0
10321    }
10322    return 1
10323}
10324
10325proc savecache {} {
10326    global nextarc cachedarcs cachearc allccache
10327
10328    if {$nextarc == $cachedarcs} return
10329    set cachearc 0
10330    set cachedarcs $nextarc
10331    catch {
10332        set f [open $allccache w]
10333        puts $f [list 1 $cachedarcs]
10334        run writecache $f
10335    }
10336}
10337
10338# Returns 1 if a is an ancestor of b, -1 if b is an ancestor of a,
10339# or 0 if neither is true.
10340proc anc_or_desc {a b} {
10341    global arcout arcstart arcend arcnos cached_isanc
10342
10343    if {$arcnos($a) eq $arcnos($b)} {
10344        # Both are on the same arc(s); either both are the same BMP,
10345        # or if one is not a BMP, the other is also not a BMP or is
10346        # the BMP at end of the arc (and it only has 1 incoming arc).
10347        # Or both can be BMPs with no incoming arcs.
10348        if {$a eq $b || $arcnos($a) eq {}} {
10349            return 0
10350        }
10351        # assert {[llength $arcnos($a)] == 1}
10352        set arc [lindex $arcnos($a) 0]
10353        set i [lsearch -exact $arcids($arc) $a]
10354        set j [lsearch -exact $arcids($arc) $b]
10355        if {$i < 0 || $i > $j} {
10356            return 1
10357        } else {
10358            return -1
10359        }
10360    }
10361
10362    if {![info exists arcout($a)]} {
10363        set arc [lindex $arcnos($a) 0]
10364        if {[info exists arcend($arc)]} {
10365            set aend $arcend($arc)
10366        } else {
10367            set aend {}
10368        }
10369        set a $arcstart($arc)
10370    } else {
10371        set aend $a
10372    }
10373    if {![info exists arcout($b)]} {
10374        set arc [lindex $arcnos($b) 0]
10375        if {[info exists arcend($arc)]} {
10376            set bend $arcend($arc)
10377        } else {
10378            set bend {}
10379        }
10380        set b $arcstart($arc)
10381    } else {
10382        set bend $b
10383    }
10384    if {$a eq $bend} {
10385        return 1
10386    }
10387    if {$b eq $aend} {
10388        return -1
10389    }
10390    if {[info exists cached_isanc($a,$bend)]} {
10391        if {$cached_isanc($a,$bend)} {
10392            return 1
10393        }
10394    }
10395    if {[info exists cached_isanc($b,$aend)]} {
10396        if {$cached_isanc($b,$aend)} {
10397            return -1
10398        }
10399        if {[info exists cached_isanc($a,$bend)]} {
10400            return 0
10401        }
10402    }
10403
10404    set todo [list $a $b]
10405    set anc($a) a
10406    set anc($b) b
10407    for {set i 0} {$i < [llength $todo]} {incr i} {
10408        set x [lindex $todo $i]
10409        if {$anc($x) eq {}} {
10410            continue
10411        }
10412        foreach arc $arcnos($x) {
10413            set xd $arcstart($arc)
10414            if {$xd eq $bend} {
10415                set cached_isanc($a,$bend) 1
10416                set cached_isanc($b,$aend) 0
10417                return 1
10418            } elseif {$xd eq $aend} {
10419                set cached_isanc($b,$aend) 1
10420                set cached_isanc($a,$bend) 0
10421                return -1
10422            }
10423            if {![info exists anc($xd)]} {
10424                set anc($xd) $anc($x)
10425                lappend todo $xd
10426            } elseif {$anc($xd) ne $anc($x)} {
10427                set anc($xd) {}
10428            }
10429        }
10430    }
10431    set cached_isanc($a,$bend) 0
10432    set cached_isanc($b,$aend) 0
10433    return 0
10434}
10435
10436# This identifies whether $desc has an ancestor that is
10437# a growing tip of the graph and which is not an ancestor of $anc
10438# and returns 0 if so and 1 if not.
10439# If we subsequently discover a tag on such a growing tip, and that
10440# turns out to be a descendent of $anc (which it could, since we
10441# don't necessarily see children before parents), then $desc
10442# isn't a good choice to display as a descendent tag of
10443# $anc (since it is the descendent of another tag which is
10444# a descendent of $anc).  Similarly, $anc isn't a good choice to
10445# display as a ancestor tag of $desc.
10446#
10447proc is_certain {desc anc} {
10448    global arcnos arcout arcstart arcend growing problems
10449
10450    set certain {}
10451    if {[llength $arcnos($anc)] == 1} {
10452        # tags on the same arc are certain
10453        if {$arcnos($desc) eq $arcnos($anc)} {
10454            return 1
10455        }
10456        if {![info exists arcout($anc)]} {
10457            # if $anc is partway along an arc, use the start of the arc instead
10458            set a [lindex $arcnos($anc) 0]
10459            set anc $arcstart($a)
10460        }
10461    }
10462    if {[llength $arcnos($desc)] > 1 || [info exists arcout($desc)]} {
10463        set x $desc
10464    } else {
10465        set a [lindex $arcnos($desc) 0]
10466        set x $arcend($a)
10467    }
10468    if {$x == $anc} {
10469        return 1
10470    }
10471    set anclist [list $x]
10472    set dl($x) 1
10473    set nnh 1
10474    set ngrowanc 0
10475    for {set i 0} {$i < [llength $anclist] && ($nnh > 0 || $ngrowanc > 0)} {incr i} {
10476        set x [lindex $anclist $i]
10477        if {$dl($x)} {
10478            incr nnh -1
10479        }
10480        set done($x) 1
10481        foreach a $arcout($x) {
10482            if {[info exists growing($a)]} {
10483                if {![info exists growanc($x)] && $dl($x)} {
10484                    set growanc($x) 1
10485                    incr ngrowanc
10486                }
10487            } else {
10488                set y $arcend($a)
10489                if {[info exists dl($y)]} {
10490                    if {$dl($y)} {
10491                        if {!$dl($x)} {
10492                            set dl($y) 0
10493                            if {![info exists done($y)]} {
10494                                incr nnh -1
10495                            }
10496                            if {[info exists growanc($x)]} {
10497                                incr ngrowanc -1
10498                            }
10499                            set xl [list $y]
10500                            for {set k 0} {$k < [llength $xl]} {incr k} {
10501                                set z [lindex $xl $k]
10502                                foreach c $arcout($z) {
10503                                    if {[info exists arcend($c)]} {
10504                                        set v $arcend($c)
10505                                        if {[info exists dl($v)] && $dl($v)} {
10506                                            set dl($v) 0
10507                                            if {![info exists done($v)]} {
10508                                                incr nnh -1
10509                                            }
10510                                            if {[info exists growanc($v)]} {
10511                                                incr ngrowanc -1
10512                                            }
10513                                            lappend xl $v
10514                                        }
10515                                    }
10516                                }
10517                            }
10518                        }
10519                    }
10520                } elseif {$y eq $anc || !$dl($x)} {
10521                    set dl($y) 0
10522                    lappend anclist $y
10523                } else {
10524                    set dl($y) 1
10525                    lappend anclist $y
10526                    incr nnh
10527                }
10528            }
10529        }
10530    }
10531    foreach x [array names growanc] {
10532        if {$dl($x)} {
10533            return 0
10534        }
10535        return 0
10536    }
10537    return 1
10538}
10539
10540proc validate_arctags {a} {
10541    global arctags idtags
10542
10543    set i -1
10544    set na $arctags($a)
10545    foreach id $arctags($a) {
10546        incr i
10547        if {![info exists idtags($id)]} {
10548            set na [lreplace $na $i $i]
10549            incr i -1
10550        }
10551    }
10552    set arctags($a) $na
10553}
10554
10555proc validate_archeads {a} {
10556    global archeads idheads
10557
10558    set i -1
10559    set na $archeads($a)
10560    foreach id $archeads($a) {
10561        incr i
10562        if {![info exists idheads($id)]} {
10563            set na [lreplace $na $i $i]
10564            incr i -1
10565        }
10566    }
10567    set archeads($a) $na
10568}
10569
10570# Return the list of IDs that have tags that are descendents of id,
10571# ignoring IDs that are descendents of IDs already reported.
10572proc desctags {id} {
10573    global arcnos arcstart arcids arctags idtags allparents
10574    global growing cached_dtags
10575
10576    if {![info exists allparents($id)]} {
10577        return {}
10578    }
10579    set t1 [clock clicks -milliseconds]
10580    set argid $id
10581    if {[llength $arcnos($id)] == 1 && [llength $allparents($id)] == 1} {
10582        # part-way along an arc; check that arc first
10583        set a [lindex $arcnos($id) 0]
10584        if {$arctags($a) ne {}} {
10585            validate_arctags $a
10586            set i [lsearch -exact $arcids($a) $id]
10587            set tid {}
10588            foreach t $arctags($a) {
10589                set j [lsearch -exact $arcids($a) $t]
10590                if {$j >= $i} break
10591                set tid $t
10592            }
10593            if {$tid ne {}} {
10594                return $tid
10595            }
10596        }
10597        set id $arcstart($a)
10598        if {[info exists idtags($id)]} {
10599            return $id
10600        }
10601    }
10602    if {[info exists cached_dtags($id)]} {
10603        return $cached_dtags($id)
10604    }
10605
10606    set origid $id
10607    set todo [list $id]
10608    set queued($id) 1
10609    set nc 1
10610    for {set i 0} {$i < [llength $todo] && $nc > 0} {incr i} {
10611        set id [lindex $todo $i]
10612        set done($id) 1
10613        set ta [info exists hastaggedancestor($id)]
10614        if {!$ta} {
10615            incr nc -1
10616        }
10617        # ignore tags on starting node
10618        if {!$ta && $i > 0} {
10619            if {[info exists idtags($id)]} {
10620                set tagloc($id) $id
10621                set ta 1
10622            } elseif {[info exists cached_dtags($id)]} {
10623                set tagloc($id) $cached_dtags($id)
10624                set ta 1
10625            }
10626        }
10627        foreach a $arcnos($id) {
10628            set d $arcstart($a)
10629            if {!$ta && $arctags($a) ne {}} {
10630                validate_arctags $a
10631                if {$arctags($a) ne {}} {
10632                    lappend tagloc($id) [lindex $arctags($a) end]
10633                }
10634            }
10635            if {$ta || $arctags($a) ne {}} {
10636                set tomark [list $d]
10637                for {set j 0} {$j < [llength $tomark]} {incr j} {
10638                    set dd [lindex $tomark $j]
10639                    if {![info exists hastaggedancestor($dd)]} {
10640                        if {[info exists done($dd)]} {
10641                            foreach b $arcnos($dd) {
10642                                lappend tomark $arcstart($b)
10643                            }
10644                            if {[info exists tagloc($dd)]} {
10645                                unset tagloc($dd)
10646                            }
10647                        } elseif {[info exists queued($dd)]} {
10648                            incr nc -1
10649                        }
10650                        set hastaggedancestor($dd) 1
10651                    }
10652                }
10653            }
10654            if {![info exists queued($d)]} {
10655                lappend todo $d
10656                set queued($d) 1
10657                if {![info exists hastaggedancestor($d)]} {
10658                    incr nc
10659                }
10660            }
10661        }
10662    }
10663    set tags {}
10664    foreach id [array names tagloc] {
10665        if {![info exists hastaggedancestor($id)]} {
10666            foreach t $tagloc($id) {
10667                if {[lsearch -exact $tags $t] < 0} {
10668                    lappend tags $t
10669                }
10670            }
10671        }
10672    }
10673    set t2 [clock clicks -milliseconds]
10674    set loopix $i
10675
10676    # remove tags that are descendents of other tags
10677    for {set i 0} {$i < [llength $tags]} {incr i} {
10678        set a [lindex $tags $i]
10679        for {set j 0} {$j < $i} {incr j} {
10680            set b [lindex $tags $j]
10681            set r [anc_or_desc $a $b]
10682            if {$r == 1} {
10683                set tags [lreplace $tags $j $j]
10684                incr j -1
10685                incr i -1
10686            } elseif {$r == -1} {
10687                set tags [lreplace $tags $i $i]
10688                incr i -1
10689                break
10690            }
10691        }
10692    }
10693
10694    if {[array names growing] ne {}} {
10695        # graph isn't finished, need to check if any tag could get
10696        # eclipsed by another tag coming later.  Simply ignore any
10697        # tags that could later get eclipsed.
10698        set ctags {}
10699        foreach t $tags {
10700            if {[is_certain $t $origid]} {
10701                lappend ctags $t
10702            }
10703        }
10704        if {$tags eq $ctags} {
10705            set cached_dtags($origid) $tags
10706        } else {
10707            set tags $ctags
10708        }
10709    } else {
10710        set cached_dtags($origid) $tags
10711    }
10712    set t3 [clock clicks -milliseconds]
10713    if {0 && $t3 - $t1 >= 100} {
10714        puts "iterating descendents ($loopix/[llength $todo] nodes) took\
10715            [expr {$t2-$t1}]+[expr {$t3-$t2}]ms, $nc candidates left"
10716    }
10717    return $tags
10718}
10719
10720proc anctags {id} {
10721    global arcnos arcids arcout arcend arctags idtags allparents
10722    global growing cached_atags
10723
10724    if {![info exists allparents($id)]} {
10725        return {}
10726    }
10727    set t1 [clock clicks -milliseconds]
10728    set argid $id
10729    if {[llength $arcnos($id)] == 1 && [llength $allparents($id)] == 1} {
10730        # part-way along an arc; check that arc first
10731        set a [lindex $arcnos($id) 0]
10732        if {$arctags($a) ne {}} {
10733            validate_arctags $a
10734            set i [lsearch -exact $arcids($a) $id]
10735            foreach t $arctags($a) {
10736                set j [lsearch -exact $arcids($a) $t]
10737                if {$j > $i} {
10738                    return $t
10739                }
10740            }
10741        }
10742        if {![info exists arcend($a)]} {
10743            return {}
10744        }
10745        set id $arcend($a)
10746        if {[info exists idtags($id)]} {
10747            return $id
10748        }
10749    }
10750    if {[info exists cached_atags($id)]} {
10751        return $cached_atags($id)
10752    }
10753
10754    set origid $id
10755    set todo [list $id]
10756    set queued($id) 1
10757    set taglist {}
10758    set nc 1
10759    for {set i 0} {$i < [llength $todo] && $nc > 0} {incr i} {
10760        set id [lindex $todo $i]
10761        set done($id) 1
10762        set td [info exists hastaggeddescendent($id)]
10763        if {!$td} {
10764            incr nc -1
10765        }
10766        # ignore tags on starting node
10767        if {!$td && $i > 0} {
10768            if {[info exists idtags($id)]} {
10769                set tagloc($id) $id
10770                set td 1
10771            } elseif {[info exists cached_atags($id)]} {
10772                set tagloc($id) $cached_atags($id)
10773                set td 1
10774            }
10775        }
10776        foreach a $arcout($id) {
10777            if {!$td && $arctags($a) ne {}} {
10778                validate_arctags $a
10779                if {$arctags($a) ne {}} {
10780                    lappend tagloc($id) [lindex $arctags($a) 0]
10781                }
10782            }
10783            if {![info exists arcend($a)]} continue
10784            set d $arcend($a)
10785            if {$td || $arctags($a) ne {}} {
10786                set tomark [list $d]
10787                for {set j 0} {$j < [llength $tomark]} {incr j} {
10788                    set dd [lindex $tomark $j]
10789                    if {![info exists hastaggeddescendent($dd)]} {
10790                        if {[info exists done($dd)]} {
10791                            foreach b $arcout($dd) {
10792                                if {[info exists arcend($b)]} {
10793                                    lappend tomark $arcend($b)
10794                                }
10795                            }
10796                            if {[info exists tagloc($dd)]} {
10797                                unset tagloc($dd)
10798                            }
10799                        } elseif {[info exists queued($dd)]} {
10800                            incr nc -1
10801                        }
10802                        set hastaggeddescendent($dd) 1
10803                    }
10804                }
10805            }
10806            if {![info exists queued($d)]} {
10807                lappend todo $d
10808                set queued($d) 1
10809                if {![info exists hastaggeddescendent($d)]} {
10810                    incr nc
10811                }
10812            }
10813        }
10814    }
10815    set t2 [clock clicks -milliseconds]
10816    set loopix $i
10817    set tags {}
10818    foreach id [array names tagloc] {
10819        if {![info exists hastaggeddescendent($id)]} {
10820            foreach t $tagloc($id) {
10821                if {[lsearch -exact $tags $t] < 0} {
10822                    lappend tags $t
10823                }
10824            }
10825        }
10826    }
10827
10828    # remove tags that are ancestors of other tags
10829    for {set i 0} {$i < [llength $tags]} {incr i} {
10830        set a [lindex $tags $i]
10831        for {set j 0} {$j < $i} {incr j} {
10832            set b [lindex $tags $j]
10833            set r [anc_or_desc $a $b]
10834            if {$r == -1} {
10835                set tags [lreplace $tags $j $j]
10836                incr j -1
10837                incr i -1
10838            } elseif {$r == 1} {
10839                set tags [lreplace $tags $i $i]
10840                incr i -1
10841                break
10842            }
10843        }
10844    }
10845
10846    if {[array names growing] ne {}} {
10847        # graph isn't finished, need to check if any tag could get
10848        # eclipsed by another tag coming later.  Simply ignore any
10849        # tags that could later get eclipsed.
10850        set ctags {}
10851        foreach t $tags {
10852            if {[is_certain $origid $t]} {
10853                lappend ctags $t
10854            }
10855        }
10856        if {$tags eq $ctags} {
10857            set cached_atags($origid) $tags
10858        } else {
10859            set tags $ctags
10860        }
10861    } else {
10862        set cached_atags($origid) $tags
10863    }
10864    set t3 [clock clicks -milliseconds]
10865    if {0 && $t3 - $t1 >= 100} {
10866        puts "iterating ancestors ($loopix/[llength $todo] nodes) took\
10867            [expr {$t2-$t1}]+[expr {$t3-$t2}]ms, $nc candidates left"
10868    }
10869    return $tags
10870}
10871
10872# Return the list of IDs that have heads that are descendents of id,
10873# including id itself if it has a head.
10874proc descheads {id} {
10875    global arcnos arcstart arcids archeads idheads cached_dheads
10876    global allparents arcout
10877
10878    if {![info exists allparents($id)]} {
10879        return {}
10880    }
10881    set aret {}
10882    if {![info exists arcout($id)]} {
10883        # part-way along an arc; check it first
10884        set a [lindex $arcnos($id) 0]
10885        if {$archeads($a) ne {}} {
10886            validate_archeads $a
10887            set i [lsearch -exact $arcids($a) $id]
10888            foreach t $archeads($a) {
10889                set j [lsearch -exact $arcids($a) $t]
10890                if {$j > $i} break
10891                lappend aret $t
10892            }
10893        }
10894        set id $arcstart($a)
10895    }
10896    set origid $id
10897    set todo [list $id]
10898    set seen($id) 1
10899    set ret {}
10900    for {set i 0} {$i < [llength $todo]} {incr i} {
10901        set id [lindex $todo $i]
10902        if {[info exists cached_dheads($id)]} {
10903            set ret [concat $ret $cached_dheads($id)]
10904        } else {
10905            if {[info exists idheads($id)]} {
10906                lappend ret $id
10907            }
10908            foreach a $arcnos($id) {
10909                if {$archeads($a) ne {}} {
10910                    validate_archeads $a
10911                    if {$archeads($a) ne {}} {
10912                        set ret [concat $ret $archeads($a)]
10913                    }
10914                }
10915                set d $arcstart($a)
10916                if {![info exists seen($d)]} {
10917                    lappend todo $d
10918                    set seen($d) 1
10919                }
10920            }
10921        }
10922    }
10923    set ret [lsort -unique $ret]
10924    set cached_dheads($origid) $ret
10925    return [concat $ret $aret]
10926}
10927
10928proc addedtag {id} {
10929    global arcnos arcout cached_dtags cached_atags
10930
10931    if {![info exists arcnos($id)]} return
10932    if {![info exists arcout($id)]} {
10933        recalcarc [lindex $arcnos($id) 0]
10934    }
10935    catch {unset cached_dtags}
10936    catch {unset cached_atags}
10937}
10938
10939proc addedhead {hid head} {
10940    global arcnos arcout cached_dheads
10941
10942    if {![info exists arcnos($hid)]} return
10943    if {![info exists arcout($hid)]} {
10944        recalcarc [lindex $arcnos($hid) 0]
10945    }
10946    catch {unset cached_dheads}
10947}
10948
10949proc removedhead {hid head} {
10950    global cached_dheads
10951
10952    catch {unset cached_dheads}
10953}
10954
10955proc movedhead {hid head} {
10956    global arcnos arcout cached_dheads
10957
10958    if {![info exists arcnos($hid)]} return
10959    if {![info exists arcout($hid)]} {
10960        recalcarc [lindex $arcnos($hid) 0]
10961    }
10962    catch {unset cached_dheads}
10963}
10964
10965proc changedrefs {} {
10966    global cached_dheads cached_dtags cached_atags cached_tagcontent
10967    global arctags archeads arcnos arcout idheads idtags
10968
10969    foreach id [concat [array names idheads] [array names idtags]] {
10970        if {[info exists arcnos($id)] && ![info exists arcout($id)]} {
10971            set a [lindex $arcnos($id) 0]
10972            if {![info exists donearc($a)]} {
10973                recalcarc $a
10974                set donearc($a) 1
10975            }
10976        }
10977    }
10978    catch {unset cached_tagcontent}
10979    catch {unset cached_dtags}
10980    catch {unset cached_atags}
10981    catch {unset cached_dheads}
10982}
10983
10984proc rereadrefs {} {
10985    global idtags idheads idotherrefs mainheadid
10986
10987    set refids [concat [array names idtags] \
10988                    [array names idheads] [array names idotherrefs]]
10989    foreach id $refids {
10990        if {![info exists ref($id)]} {
10991            set ref($id) [listrefs $id]
10992        }
10993    }
10994    set oldmainhead $mainheadid
10995    readrefs
10996    changedrefs
10997    set refids [lsort -unique [concat $refids [array names idtags] \
10998                        [array names idheads] [array names idotherrefs]]]
10999    foreach id $refids {
11000        set v [listrefs $id]
11001        if {![info exists ref($id)] || $ref($id) != $v} {
11002            redrawtags $id
11003        }
11004    }
11005    if {$oldmainhead ne $mainheadid} {
11006        redrawtags $oldmainhead
11007        redrawtags $mainheadid
11008    }
11009    run refill_reflist
11010}
11011
11012proc listrefs {id} {
11013    global idtags idheads idotherrefs
11014
11015    set x {}
11016    if {[info exists idtags($id)]} {
11017        set x $idtags($id)
11018    }
11019    set y {}
11020    if {[info exists idheads($id)]} {
11021        set y $idheads($id)
11022    }
11023    set z {}
11024    if {[info exists idotherrefs($id)]} {
11025        set z $idotherrefs($id)
11026    }
11027    return [list $x $y $z]
11028}
11029
11030proc add_tag_ctext {tag} {
11031    global ctext cached_tagcontent tagids
11032
11033    if {![info exists cached_tagcontent($tag)]} {
11034        catch {
11035            set cached_tagcontent($tag) [exec git cat-file -p $tag]
11036        }
11037    }
11038    $ctext insert end "[mc "Tag"]: $tag\n" bold
11039    if {[info exists cached_tagcontent($tag)]} {
11040        set text $cached_tagcontent($tag)
11041    } else {
11042        set text "[mc "Id"]:  $tagids($tag)"
11043    }
11044    appendwithlinks $text {}
11045}
11046
11047proc showtag {tag isnew} {
11048    global ctext cached_tagcontent tagids linknum tagobjid
11049
11050    if {$isnew} {
11051        addtohistory [list showtag $tag 0] savectextpos
11052    }
11053    $ctext conf -state normal
11054    clear_ctext
11055    settabs 0
11056    set linknum 0
11057    add_tag_ctext $tag
11058    maybe_scroll_ctext 1
11059    $ctext conf -state disabled
11060    init_flist {}
11061}
11062
11063proc showtags {id isnew} {
11064    global idtags ctext linknum
11065
11066    if {$isnew} {
11067        addtohistory [list showtags $id 0] savectextpos
11068    }
11069    $ctext conf -state normal
11070    clear_ctext
11071    settabs 0
11072    set linknum 0
11073    set sep {}
11074    foreach tag $idtags($id) {
11075        $ctext insert end $sep
11076        add_tag_ctext $tag
11077        set sep "\n\n"
11078    }
11079    maybe_scroll_ctext 1
11080    $ctext conf -state disabled
11081    init_flist {}
11082}
11083
11084proc doquit {} {
11085    global stopped
11086    global gitktmpdir
11087
11088    set stopped 100
11089    savestuff .
11090    destroy .
11091
11092    if {[info exists gitktmpdir]} {
11093        catch {file delete -force $gitktmpdir}
11094    }
11095}
11096
11097proc mkfontdisp {font top which} {
11098    global fontattr fontpref $font NS use_ttk
11099
11100    set fontpref($font) [set $font]
11101    ${NS}::button $top.${font}but -text $which \
11102        -command [list choosefont $font $which]
11103    ${NS}::label $top.$font -relief flat -font $font \
11104        -text $fontattr($font,family) -justify left
11105    grid x $top.${font}but $top.$font -sticky w
11106}
11107
11108proc choosefont {font which} {
11109    global fontparam fontlist fonttop fontattr
11110    global prefstop NS
11111
11112    set fontparam(which) $which
11113    set fontparam(font) $font
11114    set fontparam(family) [font actual $font -family]
11115    set fontparam(size) $fontattr($font,size)
11116    set fontparam(weight) $fontattr($font,weight)
11117    set fontparam(slant) $fontattr($font,slant)
11118    set top .gitkfont
11119    set fonttop $top
11120    if {![winfo exists $top]} {
11121        font create sample
11122        eval font config sample [font actual $font]
11123        ttk_toplevel $top
11124        make_transient $top $prefstop
11125        wm title $top [mc "Gitk font chooser"]
11126        ${NS}::label $top.l -textvariable fontparam(which)
11127        pack $top.l -side top
11128        set fontlist [lsort [font families]]
11129        ${NS}::frame $top.f
11130        listbox $top.f.fam -listvariable fontlist \
11131            -yscrollcommand [list $top.f.sb set]
11132        bind $top.f.fam <<ListboxSelect>> selfontfam
11133        ${NS}::scrollbar $top.f.sb -command [list $top.f.fam yview]
11134        pack $top.f.sb -side right -fill y
11135        pack $top.f.fam -side left -fill both -expand 1
11136        pack $top.f -side top -fill both -expand 1
11137        ${NS}::frame $top.g
11138        spinbox $top.g.size -from 4 -to 40 -width 4 \
11139            -textvariable fontparam(size) \
11140            -validatecommand {string is integer -strict %s}
11141        checkbutton $top.g.bold -padx 5 \
11142            -font {{Times New Roman} 12 bold} -text [mc "B"] -indicatoron 0 \
11143            -variable fontparam(weight) -onvalue bold -offvalue normal
11144        checkbutton $top.g.ital -padx 5 \
11145            -font {{Times New Roman} 12 italic} -text [mc "I"] -indicatoron 0  \
11146            -variable fontparam(slant) -onvalue italic -offvalue roman
11147        pack $top.g.size $top.g.bold $top.g.ital -side left
11148        pack $top.g -side top
11149        canvas $top.c -width 150 -height 50 -border 2 -relief sunk \
11150            -background white
11151        $top.c create text 100 25 -anchor center -text $which -font sample \
11152            -fill black -tags text
11153        bind $top.c <Configure> [list centertext $top.c]
11154        pack $top.c -side top -fill x
11155        ${NS}::frame $top.buts
11156        ${NS}::button $top.buts.ok -text [mc "OK"] -command fontok -default active
11157        ${NS}::button $top.buts.can -text [mc "Cancel"] -command fontcan -default normal
11158        bind $top <Key-Return> fontok
11159        bind $top <Key-Escape> fontcan
11160        grid $top.buts.ok $top.buts.can
11161        grid columnconfigure $top.buts 0 -weight 1 -uniform a
11162        grid columnconfigure $top.buts 1 -weight 1 -uniform a
11163        pack $top.buts -side bottom -fill x
11164        trace add variable fontparam write chg_fontparam
11165    } else {
11166        raise $top
11167        $top.c itemconf text -text $which
11168    }
11169    set i [lsearch -exact $fontlist $fontparam(family)]
11170    if {$i >= 0} {
11171        $top.f.fam selection set $i
11172        $top.f.fam see $i
11173    }
11174}
11175
11176proc centertext {w} {
11177    $w coords text [expr {[winfo width $w] / 2}] [expr {[winfo height $w] / 2}]
11178}
11179
11180proc fontok {} {
11181    global fontparam fontpref prefstop
11182
11183    set f $fontparam(font)
11184    set fontpref($f) [list $fontparam(family) $fontparam(size)]
11185    if {$fontparam(weight) eq "bold"} {
11186        lappend fontpref($f) "bold"
11187    }
11188    if {$fontparam(slant) eq "italic"} {
11189        lappend fontpref($f) "italic"
11190    }
11191    set w $prefstop.notebook.fonts.$f
11192    $w conf -text $fontparam(family) -font $fontpref($f)
11193
11194    fontcan
11195}
11196
11197proc fontcan {} {
11198    global fonttop fontparam
11199
11200    if {[info exists fonttop]} {
11201        catch {destroy $fonttop}
11202        catch {font delete sample}
11203        unset fonttop
11204        unset fontparam
11205    }
11206}
11207
11208if {[package vsatisfies [package provide Tk] 8.6]} {
11209    # In Tk 8.6 we have a native font chooser dialog. Overwrite the above
11210    # function to make use of it.
11211    proc choosefont {font which} {
11212        tk fontchooser configure -title $which -font $font \
11213            -command [list on_choosefont $font $which]
11214        tk fontchooser show
11215    }
11216    proc on_choosefont {font which newfont} {
11217        global fontparam
11218        puts stderr "$font $newfont"
11219        array set f [font actual $newfont]
11220        set fontparam(which) $which
11221        set fontparam(font) $font
11222        set fontparam(family) $f(-family)
11223        set fontparam(size) $f(-size)
11224        set fontparam(weight) $f(-weight)
11225        set fontparam(slant) $f(-slant)
11226        fontok
11227    }
11228}
11229
11230proc selfontfam {} {
11231    global fonttop fontparam
11232
11233    set i [$fonttop.f.fam curselection]
11234    if {$i ne {}} {
11235        set fontparam(family) [$fonttop.f.fam get $i]
11236    }
11237}
11238
11239proc chg_fontparam {v sub op} {
11240    global fontparam
11241
11242    font config sample -$sub $fontparam($sub)
11243}
11244
11245# Create a property sheet tab page
11246proc create_prefs_page {w} {
11247    global NS
11248    set parent [join [lrange [split $w .] 0 end-1] .]
11249    if {[winfo class $parent] eq "TNotebook"} {
11250        ${NS}::frame $w
11251    } else {
11252        ${NS}::labelframe $w
11253    }
11254}
11255
11256proc prefspage_general {notebook} {
11257    global NS maxwidth maxgraphpct showneartags showlocalchanges
11258    global tabstop limitdiffs autoselect autosellen extdifftool perfile_attrs
11259    global hideremotes want_ttk have_ttk maxrefs
11260
11261    set page [create_prefs_page $notebook.general]
11262
11263    ${NS}::label $page.ldisp -text [mc "Commit list display options"]
11264    grid $page.ldisp - -sticky w -pady 10
11265    ${NS}::label $page.spacer -text " "
11266    ${NS}::label $page.maxwidthl -text [mc "Maximum graph width (lines)"]
11267    spinbox $page.maxwidth -from 0 -to 100 -width 4 -textvariable maxwidth
11268    grid $page.spacer $page.maxwidthl $page.maxwidth -sticky w
11269    ${NS}::label $page.maxpctl -text [mc "Maximum graph width (% of pane)"]
11270    spinbox $page.maxpct -from 1 -to 100 -width 4 -textvariable maxgraphpct
11271    grid x $page.maxpctl $page.maxpct -sticky w
11272    ${NS}::checkbutton $page.showlocal -text [mc "Show local changes"] \
11273        -variable showlocalchanges
11274    grid x $page.showlocal -sticky w
11275    ${NS}::checkbutton $page.autoselect -text [mc "Auto-select SHA1 (length)"] \
11276        -variable autoselect
11277    spinbox $page.autosellen -from 1 -to 40 -width 4 -textvariable autosellen
11278    grid x $page.autoselect $page.autosellen -sticky w
11279    ${NS}::checkbutton $page.hideremotes -text [mc "Hide remote refs"] \
11280        -variable hideremotes
11281    grid x $page.hideremotes -sticky w
11282
11283    ${NS}::label $page.ddisp -text [mc "Diff display options"]
11284    grid $page.ddisp - -sticky w -pady 10
11285    ${NS}::label $page.tabstopl -text [mc "Tab spacing"]
11286    spinbox $page.tabstop -from 1 -to 20 -width 4 -textvariable tabstop
11287    grid x $page.tabstopl $page.tabstop -sticky w
11288    ${NS}::checkbutton $page.ntag -text [mc "Display nearby tags/heads"] \
11289        -variable showneartags
11290    grid x $page.ntag -sticky w
11291    ${NS}::label $page.maxrefsl -text [mc "Maximum # tags/heads to show"]
11292    spinbox $page.maxrefs -from 1 -to 1000 -width 4 -textvariable maxrefs
11293    grid x $page.maxrefsl $page.maxrefs -sticky w
11294    ${NS}::checkbutton $page.ldiff -text [mc "Limit diffs to listed paths"] \
11295        -variable limitdiffs
11296    grid x $page.ldiff -sticky w
11297    ${NS}::checkbutton $page.lattr -text [mc "Support per-file encodings"] \
11298        -variable perfile_attrs
11299    grid x $page.lattr -sticky w
11300
11301    ${NS}::entry $page.extdifft -textvariable extdifftool
11302    ${NS}::frame $page.extdifff
11303    ${NS}::label $page.extdifff.l -text [mc "External diff tool" ]
11304    ${NS}::button $page.extdifff.b -text [mc "Choose..."] -command choose_extdiff
11305    pack $page.extdifff.l $page.extdifff.b -side left
11306    pack configure $page.extdifff.l -padx 10
11307    grid x $page.extdifff $page.extdifft -sticky ew
11308
11309    ${NS}::label $page.lgen -text [mc "General options"]
11310    grid $page.lgen - -sticky w -pady 10
11311    ${NS}::checkbutton $page.want_ttk -variable want_ttk \
11312        -text [mc "Use themed widgets"]
11313    if {$have_ttk} {
11314        ${NS}::label $page.ttk_note -text [mc "(change requires restart)"]
11315    } else {
11316        ${NS}::label $page.ttk_note -text [mc "(currently unavailable)"]
11317    }
11318    grid x $page.want_ttk $page.ttk_note -sticky w
11319    return $page
11320}
11321
11322proc prefspage_colors {notebook} {
11323    global NS uicolor bgcolor fgcolor ctext diffcolors selectbgcolor markbgcolor
11324
11325    set page [create_prefs_page $notebook.colors]
11326
11327    ${NS}::label $page.cdisp -text [mc "Colors: press to choose"]
11328    grid $page.cdisp - -sticky w -pady 10
11329    label $page.ui -padx 40 -relief sunk -background $uicolor
11330    ${NS}::button $page.uibut -text [mc "Interface"] \
11331       -command [list choosecolor uicolor {} $page.ui [mc "interface"] setui]
11332    grid x $page.uibut $page.ui -sticky w
11333    label $page.bg -padx 40 -relief sunk -background $bgcolor
11334    ${NS}::button $page.bgbut -text [mc "Background"] \
11335        -command [list choosecolor bgcolor {} $page.bg [mc "background"] setbg]
11336    grid x $page.bgbut $page.bg -sticky w
11337    label $page.fg -padx 40 -relief sunk -background $fgcolor
11338    ${NS}::button $page.fgbut -text [mc "Foreground"] \
11339        -command [list choosecolor fgcolor {} $page.fg [mc "foreground"] setfg]
11340    grid x $page.fgbut $page.fg -sticky w
11341    label $page.diffold -padx 40 -relief sunk -background [lindex $diffcolors 0]
11342    ${NS}::button $page.diffoldbut -text [mc "Diff: old lines"] \
11343        -command [list choosecolor diffcolors 0 $page.diffold [mc "diff old lines"] \
11344                      [list $ctext tag conf d0 -foreground]]
11345    grid x $page.diffoldbut $page.diffold -sticky w
11346    label $page.diffnew -padx 40 -relief sunk -background [lindex $diffcolors 1]
11347    ${NS}::button $page.diffnewbut -text [mc "Diff: new lines"] \
11348        -command [list choosecolor diffcolors 1 $page.diffnew [mc "diff new lines"] \
11349                      [list $ctext tag conf dresult -foreground]]
11350    grid x $page.diffnewbut $page.diffnew -sticky w
11351    label $page.hunksep -padx 40 -relief sunk -background [lindex $diffcolors 2]
11352    ${NS}::button $page.hunksepbut -text [mc "Diff: hunk header"] \
11353        -command [list choosecolor diffcolors 2 $page.hunksep \
11354                      [mc "diff hunk header"] \
11355                      [list $ctext tag conf hunksep -foreground]]
11356    grid x $page.hunksepbut $page.hunksep -sticky w
11357    label $page.markbgsep -padx 40 -relief sunk -background $markbgcolor
11358    ${NS}::button $page.markbgbut -text [mc "Marked line bg"] \
11359        -command [list choosecolor markbgcolor {} $page.markbgsep \
11360                      [mc "marked line background"] \
11361                      [list $ctext tag conf omark -background]]
11362    grid x $page.markbgbut $page.markbgsep -sticky w
11363    label $page.selbgsep -padx 40 -relief sunk -background $selectbgcolor
11364    ${NS}::button $page.selbgbut -text [mc "Select bg"] \
11365        -command [list choosecolor selectbgcolor {} $page.selbgsep [mc "background"] setselbg]
11366    grid x $page.selbgbut $page.selbgsep -sticky w
11367    return $page
11368}
11369
11370proc prefspage_fonts {notebook} {
11371    global NS
11372    set page [create_prefs_page $notebook.fonts]
11373    ${NS}::label $page.cfont -text [mc "Fonts: press to choose"]
11374    grid $page.cfont - -sticky w -pady 10
11375    mkfontdisp mainfont $page [mc "Main font"]
11376    mkfontdisp textfont $page [mc "Diff display font"]
11377    mkfontdisp uifont $page [mc "User interface font"]
11378    return $page
11379}
11380
11381proc doprefs {} {
11382    global maxwidth maxgraphpct use_ttk NS
11383    global oldprefs prefstop showneartags showlocalchanges
11384    global uicolor bgcolor fgcolor ctext diffcolors selectbgcolor markbgcolor
11385    global tabstop limitdiffs autoselect autosellen extdifftool perfile_attrs
11386    global hideremotes want_ttk have_ttk
11387
11388    set top .gitkprefs
11389    set prefstop $top
11390    if {[winfo exists $top]} {
11391        raise $top
11392        return
11393    }
11394    foreach v {maxwidth maxgraphpct showneartags showlocalchanges \
11395                   limitdiffs tabstop perfile_attrs hideremotes want_ttk} {
11396        set oldprefs($v) [set $v]
11397    }
11398    ttk_toplevel $top
11399    wm title $top [mc "Gitk preferences"]
11400    make_transient $top .
11401
11402    if {[set use_notebook [expr {$use_ttk && [info command ::ttk::notebook] ne ""}]]} {
11403        set notebook [ttk::notebook $top.notebook]
11404    } else {
11405        set notebook [${NS}::frame $top.notebook -borderwidth 0 -relief flat]
11406    }
11407
11408    lappend pages [prefspage_general $notebook] [mc "General"]
11409    lappend pages [prefspage_colors $notebook] [mc "Colors"]
11410    lappend pages [prefspage_fonts $notebook] [mc "Fonts"]
11411    set col 0
11412    foreach {page title} $pages {
11413        if {$use_notebook} {
11414            $notebook add $page -text $title
11415        } else {
11416            set btn [${NS}::button $notebook.b_[string map {. X} $page] \
11417                         -text $title -command [list raise $page]]
11418            $page configure -text $title
11419            grid $btn -row 0 -column [incr col] -sticky w
11420            grid $page -row 1 -column 0 -sticky news -columnspan 100
11421        }
11422    }
11423
11424    if {!$use_notebook} {
11425        grid columnconfigure $notebook 0 -weight 1
11426        grid rowconfigure $notebook 1 -weight 1
11427        raise [lindex $pages 0]
11428    }
11429
11430    grid $notebook -sticky news -padx 2 -pady 2
11431    grid rowconfigure $top 0 -weight 1
11432    grid columnconfigure $top 0 -weight 1
11433
11434    ${NS}::frame $top.buts
11435    ${NS}::button $top.buts.ok -text [mc "OK"] -command prefsok -default active
11436    ${NS}::button $top.buts.can -text [mc "Cancel"] -command prefscan -default normal
11437    bind $top <Key-Return> prefsok
11438    bind $top <Key-Escape> prefscan
11439    grid $top.buts.ok $top.buts.can
11440    grid columnconfigure $top.buts 0 -weight 1 -uniform a
11441    grid columnconfigure $top.buts 1 -weight 1 -uniform a
11442    grid $top.buts - - -pady 10 -sticky ew
11443    grid columnconfigure $top 2 -weight 1
11444    bind $top <Visibility> [list focus $top.buts.ok]
11445}
11446
11447proc choose_extdiff {} {
11448    global extdifftool
11449
11450    set prog [tk_getOpenFile -title [mc "External diff tool"] -multiple false]
11451    if {$prog ne {}} {
11452        set extdifftool $prog
11453    }
11454}
11455
11456proc choosecolor {v vi w x cmd} {
11457    global $v
11458
11459    set c [tk_chooseColor -initialcolor [lindex [set $v] $vi] \
11460               -title [mc "Gitk: choose color for %s" $x]]
11461    if {$c eq {}} return
11462    $w conf -background $c
11463    lset $v $vi $c
11464    eval $cmd $c
11465}
11466
11467proc setselbg {c} {
11468    global bglist cflist
11469    foreach w $bglist {
11470        $w configure -selectbackground $c
11471    }
11472    $cflist tag configure highlight \
11473        -background [$cflist cget -selectbackground]
11474    allcanvs itemconf secsel -fill $c
11475}
11476
11477# This sets the background color and the color scheme for the whole UI.
11478# For some reason, tk_setPalette chooses a nasty dark red for selectColor
11479# if we don't specify one ourselves, which makes the checkbuttons and
11480# radiobuttons look bad.  This chooses white for selectColor if the
11481# background color is light, or black if it is dark.
11482proc setui {c} {
11483    if {[tk windowingsystem] eq "win32"} { return }
11484    set bg [winfo rgb . $c]
11485    set selc black
11486    if {[lindex $bg 0] + 1.5 * [lindex $bg 1] + 0.5 * [lindex $bg 2] > 100000} {
11487        set selc white
11488    }
11489    tk_setPalette background $c selectColor $selc
11490}
11491
11492proc setbg {c} {
11493    global bglist
11494
11495    foreach w $bglist {
11496        $w conf -background $c
11497    }
11498}
11499
11500proc setfg {c} {
11501    global fglist canv
11502
11503    foreach w $fglist {
11504        $w conf -foreground $c
11505    }
11506    allcanvs itemconf text -fill $c
11507    $canv itemconf circle -outline $c
11508    $canv itemconf markid -outline $c
11509}
11510
11511proc prefscan {} {
11512    global oldprefs prefstop
11513
11514    foreach v {maxwidth maxgraphpct showneartags showlocalchanges \
11515                   limitdiffs tabstop perfile_attrs hideremotes want_ttk} {
11516        global $v
11517        set $v $oldprefs($v)
11518    }
11519    catch {destroy $prefstop}
11520    unset prefstop
11521    fontcan
11522}
11523
11524proc prefsok {} {
11525    global maxwidth maxgraphpct
11526    global oldprefs prefstop showneartags showlocalchanges
11527    global fontpref mainfont textfont uifont
11528    global limitdiffs treediffs perfile_attrs
11529    global hideremotes
11530
11531    catch {destroy $prefstop}
11532    unset prefstop
11533    fontcan
11534    set fontchanged 0
11535    if {$mainfont ne $fontpref(mainfont)} {
11536        set mainfont $fontpref(mainfont)
11537        parsefont mainfont $mainfont
11538        eval font configure mainfont [fontflags mainfont]
11539        eval font configure mainfontbold [fontflags mainfont 1]
11540        setcoords
11541        set fontchanged 1
11542    }
11543    if {$textfont ne $fontpref(textfont)} {
11544        set textfont $fontpref(textfont)
11545        parsefont textfont $textfont
11546        eval font configure textfont [fontflags textfont]
11547        eval font configure textfontbold [fontflags textfont 1]
11548    }
11549    if {$uifont ne $fontpref(uifont)} {
11550        set uifont $fontpref(uifont)
11551        parsefont uifont $uifont
11552        eval font configure uifont [fontflags uifont]
11553    }
11554    settabs
11555    if {$showlocalchanges != $oldprefs(showlocalchanges)} {
11556        if {$showlocalchanges} {
11557            doshowlocalchanges
11558        } else {
11559            dohidelocalchanges
11560        }
11561    }
11562    if {$limitdiffs != $oldprefs(limitdiffs) ||
11563        ($perfile_attrs && !$oldprefs(perfile_attrs))} {
11564        # treediffs elements are limited by path;
11565        # won't have encodings cached if perfile_attrs was just turned on
11566        catch {unset treediffs}
11567    }
11568    if {$fontchanged || $maxwidth != $oldprefs(maxwidth)
11569        || $maxgraphpct != $oldprefs(maxgraphpct)} {
11570        redisplay
11571    } elseif {$showneartags != $oldprefs(showneartags) ||
11572          $limitdiffs != $oldprefs(limitdiffs)} {
11573        reselectline
11574    }
11575    if {$hideremotes != $oldprefs(hideremotes)} {
11576        rereadrefs
11577    }
11578}
11579
11580proc formatdate {d} {
11581    global datetimeformat
11582    if {$d ne {}} {
11583        set d [clock format [lindex $d 0] -format $datetimeformat]
11584    }
11585    return $d
11586}
11587
11588# This list of encoding names and aliases is distilled from
11589# http://www.iana.org/assignments/character-sets.
11590# Not all of them are supported by Tcl.
11591set encoding_aliases {
11592    { ANSI_X3.4-1968 iso-ir-6 ANSI_X3.4-1986 ISO_646.irv:1991 ASCII
11593      ISO646-US US-ASCII us IBM367 cp367 csASCII }
11594    { ISO-10646-UTF-1 csISO10646UTF1 }
11595    { ISO_646.basic:1983 ref csISO646basic1983 }
11596    { INVARIANT csINVARIANT }
11597    { ISO_646.irv:1983 iso-ir-2 irv csISO2IntlRefVersion }
11598    { BS_4730 iso-ir-4 ISO646-GB gb uk csISO4UnitedKingdom }
11599    { NATS-SEFI iso-ir-8-1 csNATSSEFI }
11600    { NATS-SEFI-ADD iso-ir-8-2 csNATSSEFIADD }
11601    { NATS-DANO iso-ir-9-1 csNATSDANO }
11602    { NATS-DANO-ADD iso-ir-9-2 csNATSDANOADD }
11603    { SEN_850200_B iso-ir-10 FI ISO646-FI ISO646-SE se csISO10Swedish }
11604    { SEN_850200_C iso-ir-11 ISO646-SE2 se2 csISO11SwedishForNames }
11605    { KS_C_5601-1987 iso-ir-149 KS_C_5601-1989 KSC_5601 korean csKSC56011987 }
11606    { ISO-2022-KR csISO2022KR }
11607    { EUC-KR csEUCKR }
11608    { ISO-2022-JP csISO2022JP }
11609    { ISO-2022-JP-2 csISO2022JP2 }
11610    { JIS_C6220-1969-jp JIS_C6220-1969 iso-ir-13 katakana x0201-7
11611      csISO13JISC6220jp }
11612    { JIS_C6220-1969-ro iso-ir-14 jp ISO646-JP csISO14JISC6220ro }
11613    { IT iso-ir-15 ISO646-IT csISO15Italian }
11614    { PT iso-ir-16 ISO646-PT csISO16Portuguese }
11615    { ES iso-ir-17 ISO646-ES csISO17Spanish }
11616    { greek7-old iso-ir-18 csISO18Greek7Old }
11617    { latin-greek iso-ir-19 csISO19LatinGreek }
11618    { DIN_66003 iso-ir-21 de ISO646-DE csISO21German }
11619    { NF_Z_62-010_(1973) iso-ir-25 ISO646-FR1 csISO25French }
11620    { Latin-greek-1 iso-ir-27 csISO27LatinGreek1 }
11621    { ISO_5427 iso-ir-37 csISO5427Cyrillic }
11622    { JIS_C6226-1978 iso-ir-42 csISO42JISC62261978 }
11623    { BS_viewdata iso-ir-47 csISO47BSViewdata }
11624    { INIS iso-ir-49 csISO49INIS }
11625    { INIS-8 iso-ir-50 csISO50INIS8 }
11626    { INIS-cyrillic iso-ir-51 csISO51INISCyrillic }
11627    { ISO_5427:1981 iso-ir-54 ISO5427Cyrillic1981 }
11628    { ISO_5428:1980 iso-ir-55 csISO5428Greek }
11629    { GB_1988-80 iso-ir-57 cn ISO646-CN csISO57GB1988 }
11630    { GB_2312-80 iso-ir-58 chinese csISO58GB231280 }
11631    { NS_4551-1 iso-ir-60 ISO646-NO no csISO60DanishNorwegian
11632      csISO60Norwegian1 }
11633    { NS_4551-2 ISO646-NO2 iso-ir-61 no2 csISO61Norwegian2 }
11634    { NF_Z_62-010 iso-ir-69 ISO646-FR fr csISO69French }
11635    { videotex-suppl iso-ir-70 csISO70VideotexSupp1 }
11636    { PT2 iso-ir-84 ISO646-PT2 csISO84Portuguese2 }
11637    { ES2 iso-ir-85 ISO646-ES2 csISO85Spanish2 }
11638    { MSZ_7795.3 iso-ir-86 ISO646-HU hu csISO86Hungarian }
11639    { JIS_C6226-1983 iso-ir-87 x0208 JIS_X0208-1983 csISO87JISX0208 }
11640    { greek7 iso-ir-88 csISO88Greek7 }
11641    { ASMO_449 ISO_9036 arabic7 iso-ir-89 csISO89ASMO449 }
11642    { iso-ir-90 csISO90 }
11643    { JIS_C6229-1984-a iso-ir-91 jp-ocr-a csISO91JISC62291984a }
11644    { JIS_C6229-1984-b iso-ir-92 ISO646-JP-OCR-B jp-ocr-b
11645      csISO92JISC62991984b }
11646    { JIS_C6229-1984-b-add iso-ir-93 jp-ocr-b-add csISO93JIS62291984badd }
11647    { JIS_C6229-1984-hand iso-ir-94 jp-ocr-hand csISO94JIS62291984hand }
11648    { JIS_C6229-1984-hand-add iso-ir-95 jp-ocr-hand-add
11649      csISO95JIS62291984handadd }
11650    { JIS_C6229-1984-kana iso-ir-96 csISO96JISC62291984kana }
11651    { ISO_2033-1983 iso-ir-98 e13b csISO2033 }
11652    { ANSI_X3.110-1983 iso-ir-99 CSA_T500-1983 NAPLPS csISO99NAPLPS }
11653    { ISO_8859-1:1987 iso-ir-100 ISO_8859-1 ISO-8859-1 latin1 l1 IBM819
11654      CP819 csISOLatin1 }
11655    { ISO_8859-2:1987 iso-ir-101 ISO_8859-2 ISO-8859-2 latin2 l2 csISOLatin2 }
11656    { T.61-7bit iso-ir-102 csISO102T617bit }
11657    { T.61-8bit T.61 iso-ir-103 csISO103T618bit }
11658    { ISO_8859-3:1988 iso-ir-109 ISO_8859-3 ISO-8859-3 latin3 l3 csISOLatin3 }
11659    { ISO_8859-4:1988 iso-ir-110 ISO_8859-4 ISO-8859-4 latin4 l4 csISOLatin4 }
11660    { ECMA-cyrillic iso-ir-111 KOI8-E csISO111ECMACyrillic }
11661    { CSA_Z243.4-1985-1 iso-ir-121 ISO646-CA csa7-1 ca csISO121Canadian1 }
11662    { CSA_Z243.4-1985-2 iso-ir-122 ISO646-CA2 csa7-2 csISO122Canadian2 }
11663    { CSA_Z243.4-1985-gr iso-ir-123 csISO123CSAZ24341985gr }
11664    { ISO_8859-6:1987 iso-ir-127 ISO_8859-6 ISO-8859-6 ECMA-114 ASMO-708
11665      arabic csISOLatinArabic }
11666    { ISO_8859-6-E csISO88596E ISO-8859-6-E }
11667    { ISO_8859-6-I csISO88596I ISO-8859-6-I }
11668    { ISO_8859-7:1987 iso-ir-126 ISO_8859-7 ISO-8859-7 ELOT_928 ECMA-118
11669      greek greek8 csISOLatinGreek }
11670    { T.101-G2 iso-ir-128 csISO128T101G2 }
11671    { ISO_8859-8:1988 iso-ir-138 ISO_8859-8 ISO-8859-8 hebrew
11672      csISOLatinHebrew }
11673    { ISO_8859-8-E csISO88598E ISO-8859-8-E }
11674    { ISO_8859-8-I csISO88598I ISO-8859-8-I }
11675    { CSN_369103 iso-ir-139 csISO139CSN369103 }
11676    { JUS_I.B1.002 iso-ir-141 ISO646-YU js yu csISO141JUSIB1002 }
11677    { ISO_6937-2-add iso-ir-142 csISOTextComm }
11678    { IEC_P27-1 iso-ir-143 csISO143IECP271 }
11679    { ISO_8859-5:1988 iso-ir-144 ISO_8859-5 ISO-8859-5 cyrillic
11680      csISOLatinCyrillic }
11681    { JUS_I.B1.003-serb iso-ir-146 serbian csISO146Serbian }
11682    { JUS_I.B1.003-mac macedonian iso-ir-147 csISO147Macedonian }
11683    { ISO_8859-9:1989 iso-ir-148 ISO_8859-9 ISO-8859-9 latin5 l5 csISOLatin5 }
11684    { greek-ccitt iso-ir-150 csISO150 csISO150GreekCCITT }
11685    { NC_NC00-10:81 cuba iso-ir-151 ISO646-CU csISO151Cuba }
11686    { ISO_6937-2-25 iso-ir-152 csISO6937Add }
11687    { GOST_19768-74 ST_SEV_358-88 iso-ir-153 csISO153GOST1976874 }
11688    { ISO_8859-supp iso-ir-154 latin1-2-5 csISO8859Supp }
11689    { ISO_10367-box iso-ir-155 csISO10367Box }
11690    { ISO-8859-10 iso-ir-157 l6 ISO_8859-10:1992 csISOLatin6 latin6 }
11691    { latin-lap lap iso-ir-158 csISO158Lap }
11692    { JIS_X0212-1990 x0212 iso-ir-159 csISO159JISX02121990 }
11693    { DS_2089 DS2089 ISO646-DK dk csISO646Danish }
11694    { us-dk csUSDK }
11695    { dk-us csDKUS }
11696    { JIS_X0201 X0201 csHalfWidthKatakana }
11697    { KSC5636 ISO646-KR csKSC5636 }
11698    { ISO-10646-UCS-2 csUnicode }
11699    { ISO-10646-UCS-4 csUCS4 }
11700    { DEC-MCS dec csDECMCS }
11701    { hp-roman8 roman8 r8 csHPRoman8 }
11702    { macintosh mac csMacintosh }
11703    { IBM037 cp037 ebcdic-cp-us ebcdic-cp-ca ebcdic-cp-wt ebcdic-cp-nl
11704      csIBM037 }
11705    { IBM038 EBCDIC-INT cp038 csIBM038 }
11706    { IBM273 CP273 csIBM273 }
11707    { IBM274 EBCDIC-BE CP274 csIBM274 }
11708    { IBM275 EBCDIC-BR cp275 csIBM275 }
11709    { IBM277 EBCDIC-CP-DK EBCDIC-CP-NO csIBM277 }
11710    { IBM278 CP278 ebcdic-cp-fi ebcdic-cp-se csIBM278 }
11711    { IBM280 CP280 ebcdic-cp-it csIBM280 }
11712    { IBM281 EBCDIC-JP-E cp281 csIBM281 }
11713    { IBM284 CP284 ebcdic-cp-es csIBM284 }
11714    { IBM285 CP285 ebcdic-cp-gb csIBM285 }
11715    { IBM290 cp290 EBCDIC-JP-kana csIBM290 }
11716    { IBM297 cp297 ebcdic-cp-fr csIBM297 }
11717    { IBM420 cp420 ebcdic-cp-ar1 csIBM420 }
11718    { IBM423 cp423 ebcdic-cp-gr csIBM423 }
11719    { IBM424 cp424 ebcdic-cp-he csIBM424 }
11720    { IBM437 cp437 437 csPC8CodePage437 }
11721    { IBM500 CP500 ebcdic-cp-be ebcdic-cp-ch csIBM500 }
11722    { IBM775 cp775 csPC775Baltic }
11723    { IBM850 cp850 850 csPC850Multilingual }
11724    { IBM851 cp851 851 csIBM851 }
11725    { IBM852 cp852 852 csPCp852 }
11726    { IBM855 cp855 855 csIBM855 }
11727    { IBM857 cp857 857 csIBM857 }
11728    { IBM860 cp860 860 csIBM860 }
11729    { IBM861 cp861 861 cp-is csIBM861 }
11730    { IBM862 cp862 862 csPC862LatinHebrew }
11731    { IBM863 cp863 863 csIBM863 }
11732    { IBM864 cp864 csIBM864 }
11733    { IBM865 cp865 865 csIBM865 }
11734    { IBM866 cp866 866 csIBM866 }
11735    { IBM868 CP868 cp-ar csIBM868 }
11736    { IBM869 cp869 869 cp-gr csIBM869 }
11737    { IBM870 CP870 ebcdic-cp-roece ebcdic-cp-yu csIBM870 }
11738    { IBM871 CP871 ebcdic-cp-is csIBM871 }
11739    { IBM880 cp880 EBCDIC-Cyrillic csIBM880 }
11740    { IBM891 cp891 csIBM891 }
11741    { IBM903 cp903 csIBM903 }
11742    { IBM904 cp904 904 csIBBM904 }
11743    { IBM905 CP905 ebcdic-cp-tr csIBM905 }
11744    { IBM918 CP918 ebcdic-cp-ar2 csIBM918 }
11745    { IBM1026 CP1026 csIBM1026 }
11746    { EBCDIC-AT-DE csIBMEBCDICATDE }
11747    { EBCDIC-AT-DE-A csEBCDICATDEA }
11748    { EBCDIC-CA-FR csEBCDICCAFR }
11749    { EBCDIC-DK-NO csEBCDICDKNO }
11750    { EBCDIC-DK-NO-A csEBCDICDKNOA }
11751    { EBCDIC-FI-SE csEBCDICFISE }
11752    { EBCDIC-FI-SE-A csEBCDICFISEA }
11753    { EBCDIC-FR csEBCDICFR }
11754    { EBCDIC-IT csEBCDICIT }
11755    { EBCDIC-PT csEBCDICPT }
11756    { EBCDIC-ES csEBCDICES }
11757    { EBCDIC-ES-A csEBCDICESA }
11758    { EBCDIC-ES-S csEBCDICESS }
11759    { EBCDIC-UK csEBCDICUK }
11760    { EBCDIC-US csEBCDICUS }
11761    { UNKNOWN-8BIT csUnknown8BiT }
11762    { MNEMONIC csMnemonic }
11763    { MNEM csMnem }
11764    { VISCII csVISCII }
11765    { VIQR csVIQR }
11766    { KOI8-R csKOI8R }
11767    { IBM00858 CCSID00858 CP00858 PC-Multilingual-850+euro }
11768    { IBM00924 CCSID00924 CP00924 ebcdic-Latin9--euro }
11769    { IBM01140 CCSID01140 CP01140 ebcdic-us-37+euro }
11770    { IBM01141 CCSID01141 CP01141 ebcdic-de-273+euro }
11771    { IBM01142 CCSID01142 CP01142 ebcdic-dk-277+euro ebcdic-no-277+euro }
11772    { IBM01143 CCSID01143 CP01143 ebcdic-fi-278+euro ebcdic-se-278+euro }
11773    { IBM01144 CCSID01144 CP01144 ebcdic-it-280+euro }
11774    { IBM01145 CCSID01145 CP01145 ebcdic-es-284+euro }
11775    { IBM01146 CCSID01146 CP01146 ebcdic-gb-285+euro }
11776    { IBM01147 CCSID01147 CP01147 ebcdic-fr-297+euro }
11777    { IBM01148 CCSID01148 CP01148 ebcdic-international-500+euro }
11778    { IBM01149 CCSID01149 CP01149 ebcdic-is-871+euro }
11779    { IBM1047 IBM-1047 }
11780    { PTCP154 csPTCP154 PT154 CP154 Cyrillic-Asian }
11781    { Amiga-1251 Ami1251 Amiga1251 Ami-1251 }
11782    { UNICODE-1-1 csUnicode11 }
11783    { CESU-8 csCESU-8 }
11784    { BOCU-1 csBOCU-1 }
11785    { UNICODE-1-1-UTF-7 csUnicode11UTF7 }
11786    { ISO-8859-14 iso-ir-199 ISO_8859-14:1998 ISO_8859-14 latin8 iso-celtic
11787      l8 }
11788    { ISO-8859-15 ISO_8859-15 Latin-9 }
11789    { ISO-8859-16 iso-ir-226 ISO_8859-16:2001 ISO_8859-16 latin10 l10 }
11790    { GBK CP936 MS936 windows-936 }
11791    { JIS_Encoding csJISEncoding }
11792    { Shift_JIS MS_Kanji csShiftJIS ShiftJIS Shift-JIS }
11793    { Extended_UNIX_Code_Packed_Format_for_Japanese csEUCPkdFmtJapanese
11794      EUC-JP }
11795    { Extended_UNIX_Code_Fixed_Width_for_Japanese csEUCFixWidJapanese }
11796    { ISO-10646-UCS-Basic csUnicodeASCII }
11797    { ISO-10646-Unicode-Latin1 csUnicodeLatin1 ISO-10646 }
11798    { ISO-Unicode-IBM-1261 csUnicodeIBM1261 }
11799    { ISO-Unicode-IBM-1268 csUnicodeIBM1268 }
11800    { ISO-Unicode-IBM-1276 csUnicodeIBM1276 }
11801    { ISO-Unicode-IBM-1264 csUnicodeIBM1264 }
11802    { ISO-Unicode-IBM-1265 csUnicodeIBM1265 }
11803    { ISO-8859-1-Windows-3.0-Latin-1 csWindows30Latin1 }
11804    { ISO-8859-1-Windows-3.1-Latin-1 csWindows31Latin1 }
11805    { ISO-8859-2-Windows-Latin-2 csWindows31Latin2 }
11806    { ISO-8859-9-Windows-Latin-5 csWindows31Latin5 }
11807    { Adobe-Standard-Encoding csAdobeStandardEncoding }
11808    { Ventura-US csVenturaUS }
11809    { Ventura-International csVenturaInternational }
11810    { PC8-Danish-Norwegian csPC8DanishNorwegian }
11811    { PC8-Turkish csPC8Turkish }
11812    { IBM-Symbols csIBMSymbols }
11813    { IBM-Thai csIBMThai }
11814    { HP-Legal csHPLegal }
11815    { HP-Pi-font csHPPiFont }
11816    { HP-Math8 csHPMath8 }
11817    { Adobe-Symbol-Encoding csHPPSMath }
11818    { HP-DeskTop csHPDesktop }
11819    { Ventura-Math csVenturaMath }
11820    { Microsoft-Publishing csMicrosoftPublishing }
11821    { Windows-31J csWindows31J }
11822    { GB2312 csGB2312 }
11823    { Big5 csBig5 }
11824}
11825
11826proc tcl_encoding {enc} {
11827    global encoding_aliases tcl_encoding_cache
11828    if {[info exists tcl_encoding_cache($enc)]} {
11829        return $tcl_encoding_cache($enc)
11830    }
11831    set names [encoding names]
11832    set lcnames [string tolower $names]
11833    set enc [string tolower $enc]
11834    set i [lsearch -exact $lcnames $enc]
11835    if {$i < 0} {
11836        # look for "isonnn" instead of "iso-nnn" or "iso_nnn"
11837        if {[regsub {^(iso|cp|ibm|jis)[-_]} $enc {\1} encx]} {
11838            set i [lsearch -exact $lcnames $encx]
11839        }
11840    }
11841    if {$i < 0} {
11842        foreach l $encoding_aliases {
11843            set ll [string tolower $l]
11844            if {[lsearch -exact $ll $enc] < 0} continue
11845            # look through the aliases for one that tcl knows about
11846            foreach e $ll {
11847                set i [lsearch -exact $lcnames $e]
11848                if {$i < 0} {
11849                    if {[regsub {^(iso|cp|ibm|jis)[-_]} $e {\1} ex]} {
11850                        set i [lsearch -exact $lcnames $ex]
11851                    }
11852                }
11853                if {$i >= 0} break
11854            }
11855            break
11856        }
11857    }
11858    set tclenc {}
11859    if {$i >= 0} {
11860        set tclenc [lindex $names $i]
11861    }
11862    set tcl_encoding_cache($enc) $tclenc
11863    return $tclenc
11864}
11865
11866proc gitattr {path attr default} {
11867    global path_attr_cache
11868    if {[info exists path_attr_cache($attr,$path)]} {
11869        set r $path_attr_cache($attr,$path)
11870    } else {
11871        set r "unspecified"
11872        if {![catch {set line [exec git check-attr $attr -- $path]}]} {
11873            regexp "(.*): $attr: (.*)" $line m f r
11874        }
11875        set path_attr_cache($attr,$path) $r
11876    }
11877    if {$r eq "unspecified"} {
11878        return $default
11879    }
11880    return $r
11881}
11882
11883proc cache_gitattr {attr pathlist} {
11884    global path_attr_cache
11885    set newlist {}
11886    foreach path $pathlist {
11887        if {![info exists path_attr_cache($attr,$path)]} {
11888            lappend newlist $path
11889        }
11890    }
11891    set lim 1000
11892    if {[tk windowingsystem] == "win32"} {
11893        # windows has a 32k limit on the arguments to a command...
11894        set lim 30
11895    }
11896    while {$newlist ne {}} {
11897        set head [lrange $newlist 0 [expr {$lim - 1}]]
11898        set newlist [lrange $newlist $lim end]
11899        if {![catch {set rlist [eval exec git check-attr $attr -- $head]}]} {
11900            foreach row [split $rlist "\n"] {
11901                if {[regexp "(.*): $attr: (.*)" $row m path value]} {
11902                    if {[string index $path 0] eq "\""} {
11903                        set path [encoding convertfrom [lindex $path 0]]
11904                    }
11905                    set path_attr_cache($attr,$path) $value
11906                }
11907            }
11908        }
11909    }
11910}
11911
11912proc get_path_encoding {path} {
11913    global gui_encoding perfile_attrs
11914    set tcl_enc $gui_encoding
11915    if {$path ne {} && $perfile_attrs} {
11916        set enc2 [tcl_encoding [gitattr $path encoding $tcl_enc]]
11917        if {$enc2 ne {}} {
11918            set tcl_enc $enc2
11919        }
11920    }
11921    return $tcl_enc
11922}
11923
11924# First check that Tcl/Tk is recent enough
11925if {[catch {package require Tk 8.4} err]} {
11926    show_error {} . "Sorry, gitk cannot run with this version of Tcl/Tk.\n\
11927                     Gitk requires at least Tcl/Tk 8.4." list
11928    exit 1
11929}
11930
11931# on OSX bring the current Wish process window to front
11932if {[tk windowingsystem] eq "aqua"} {
11933    exec osascript -e [format {
11934        tell application "System Events"
11935            set frontmost of processes whose unix id is %d to true
11936        end tell
11937    } [pid] ]
11938}
11939
11940# Unset GIT_TRACE var if set
11941if { [info exists ::env(GIT_TRACE)] } {
11942    unset ::env(GIT_TRACE)
11943}
11944
11945# defaults...
11946set wrcomcmd "git diff-tree --stdin -p --pretty"
11947
11948set gitencoding {}
11949catch {
11950    set gitencoding [exec git config --get i18n.commitencoding]
11951}
11952catch {
11953    set gitencoding [exec git config --get i18n.logoutputencoding]
11954}
11955if {$gitencoding == ""} {
11956    set gitencoding "utf-8"
11957}
11958set tclencoding [tcl_encoding $gitencoding]
11959if {$tclencoding == {}} {
11960    puts stderr "Warning: encoding $gitencoding is not supported by Tcl/Tk"
11961}
11962
11963set gui_encoding [encoding system]
11964catch {
11965    set enc [exec git config --get gui.encoding]
11966    if {$enc ne {}} {
11967        set tclenc [tcl_encoding $enc]
11968        if {$tclenc ne {}} {
11969            set gui_encoding $tclenc
11970        } else {
11971            puts stderr "Warning: encoding $enc is not supported by Tcl/Tk"
11972        }
11973    }
11974}
11975
11976set log_showroot true
11977catch {
11978    set log_showroot [exec git config --bool --get log.showroot]
11979}
11980
11981if {[tk windowingsystem] eq "aqua"} {
11982    set mainfont {{Lucida Grande} 9}
11983    set textfont {Monaco 9}
11984    set uifont {{Lucida Grande} 9 bold}
11985} elseif {![catch {::tk::pkgconfig get fontsystem} xft] && $xft eq "xft"} {
11986    # fontconfig!
11987    set mainfont {sans 9}
11988    set textfont {monospace 9}
11989    set uifont {sans 9 bold}
11990} else {
11991    set mainfont {Helvetica 9}
11992    set textfont {Courier 9}
11993    set uifont {Helvetica 9 bold}
11994}
11995set tabstop 8
11996set findmergefiles 0
11997set maxgraphpct 50
11998set maxwidth 16
11999set revlistorder 0
12000set fastdate 0
12001set uparrowlen 5
12002set downarrowlen 5
12003set mingaplen 100
12004set cmitmode "patch"
12005set wrapcomment "none"
12006set showneartags 1
12007set hideremotes 0
12008set maxrefs 20
12009set maxlinelen 200
12010set showlocalchanges 1
12011set limitdiffs 1
12012set datetimeformat "%Y-%m-%d %H:%M:%S"
12013set autoselect 1
12014set autosellen 40
12015set perfile_attrs 0
12016set want_ttk 1
12017
12018if {[tk windowingsystem] eq "aqua"} {
12019    set extdifftool "opendiff"
12020} else {
12021    set extdifftool "meld"
12022}
12023
12024set colors {green red blue magenta darkgrey brown orange}
12025if {[tk windowingsystem] eq "win32"} {
12026    set uicolor SystemButtonFace
12027    set uifgcolor SystemButtonText
12028    set uifgdisabledcolor SystemDisabledText
12029    set bgcolor SystemWindow
12030    set fgcolor SystemWindowText
12031    set selectbgcolor SystemHighlight
12032} else {
12033    set uicolor grey85
12034    set uifgcolor black
12035    set uifgdisabledcolor "#999"
12036    set bgcolor white
12037    set fgcolor black
12038    set selectbgcolor gray85
12039}
12040set diffcolors {red "#00a000" blue}
12041set diffcontext 3
12042set mergecolors {red blue green purple brown "#009090" magenta "#808000" "#009000" "#ff0080" cyan "#b07070" "#70b0f0" "#70f0b0" "#f0b070" "#ff70b0"}
12043set ignorespace 0
12044set worddiff ""
12045set markbgcolor "#e0e0ff"
12046
12047set headbgcolor green
12048set headfgcolor black
12049set headoutlinecolor black
12050set remotebgcolor #ffddaa
12051set tagbgcolor yellow
12052set tagfgcolor black
12053set tagoutlinecolor black
12054set reflinecolor black
12055set filesepbgcolor #aaaaaa
12056set filesepfgcolor black
12057set linehoverbgcolor #ffff80
12058set linehoverfgcolor black
12059set linehoveroutlinecolor black
12060set mainheadcirclecolor yellow
12061set workingfilescirclecolor red
12062set indexcirclecolor green
12063set circlecolors {white blue gray blue blue}
12064set linkfgcolor blue
12065set circleoutlinecolor $fgcolor
12066set foundbgcolor yellow
12067set currentsearchhitbgcolor orange
12068
12069# button for popping up context menus
12070if {[tk windowingsystem] eq "aqua"} {
12071    set ctxbut <Button-2>
12072} else {
12073    set ctxbut <Button-3>
12074}
12075
12076## For msgcat loading, first locate the installation location.
12077if { [info exists ::env(GITK_MSGSDIR)] } {
12078    ## Msgsdir was manually set in the environment.
12079    set gitk_msgsdir $::env(GITK_MSGSDIR)
12080} else {
12081    ## Let's guess the prefix from argv0.
12082    set gitk_prefix [file dirname [file dirname [file normalize $argv0]]]
12083    set gitk_libdir [file join $gitk_prefix share gitk lib]
12084    set gitk_msgsdir [file join $gitk_libdir msgs]
12085    unset gitk_prefix
12086}
12087
12088## Internationalization (i18n) through msgcat and gettext. See
12089## http://www.gnu.org/software/gettext/manual/html_node/Tcl.html
12090package require msgcat
12091namespace import ::msgcat::mc
12092## And eventually load the actual message catalog
12093::msgcat::mcload $gitk_msgsdir
12094
12095catch {
12096    # follow the XDG base directory specification by default. See
12097    # http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
12098    if {[info exists env(XDG_CONFIG_HOME)] && $env(XDG_CONFIG_HOME) ne ""} {
12099        # XDG_CONFIG_HOME environment variable is set
12100        set config_file [file join $env(XDG_CONFIG_HOME) git gitk]
12101        set config_file_tmp [file join $env(XDG_CONFIG_HOME) git gitk-tmp]
12102    } else {
12103        # default XDG_CONFIG_HOME
12104        set config_file "~/.config/git/gitk"
12105        set config_file_tmp "~/.config/git/gitk-tmp"
12106    }
12107    if {![file exists $config_file]} {
12108        # for backward compatibility use the old config file if it exists
12109        if {[file exists "~/.gitk"]} {
12110            set config_file "~/.gitk"
12111            set config_file_tmp "~/.gitk-tmp"
12112        } elseif {![file exists [file dirname $config_file]]} {
12113            file mkdir [file dirname $config_file]
12114        }
12115    }
12116    source $config_file
12117}
12118
12119parsefont mainfont $mainfont
12120eval font create mainfont [fontflags mainfont]
12121eval font create mainfontbold [fontflags mainfont 1]
12122
12123parsefont textfont $textfont
12124eval font create textfont [fontflags textfont]
12125eval font create textfontbold [fontflags textfont 1]
12126
12127parsefont uifont $uifont
12128eval font create uifont [fontflags uifont]
12129
12130setui $uicolor
12131
12132setoptions
12133
12134# check that we can find a .git directory somewhere...
12135if {[catch {set gitdir [exec git rev-parse --git-dir]}]} {
12136    show_error {} . [mc "Cannot find a git repository here."]
12137    exit 1
12138}
12139
12140set selecthead {}
12141set selectheadid {}
12142
12143set revtreeargs {}
12144set cmdline_files {}
12145set i 0
12146set revtreeargscmd {}
12147foreach arg $argv {
12148    switch -glob -- $arg {
12149        "" { }
12150        "--" {
12151            set cmdline_files [lrange $argv [expr {$i + 1}] end]
12152            break
12153        }
12154        "--select-commit=*" {
12155            set selecthead [string range $arg 16 end]
12156        }
12157        "--argscmd=*" {
12158            set revtreeargscmd [string range $arg 10 end]
12159        }
12160        default {
12161            lappend revtreeargs $arg
12162        }
12163    }
12164    incr i
12165}
12166
12167if {$selecthead eq "HEAD"} {
12168    set selecthead {}
12169}
12170
12171if {$i >= [llength $argv] && $revtreeargs ne {}} {
12172    # no -- on command line, but some arguments (other than --argscmd)
12173    if {[catch {
12174        set f [eval exec git rev-parse --no-revs --no-flags $revtreeargs]
12175        set cmdline_files [split $f "\n"]
12176        set n [llength $cmdline_files]
12177        set revtreeargs [lrange $revtreeargs 0 end-$n]
12178        # Unfortunately git rev-parse doesn't produce an error when
12179        # something is both a revision and a filename.  To be consistent
12180        # with git log and git rev-list, check revtreeargs for filenames.
12181        foreach arg $revtreeargs {
12182            if {[file exists $arg]} {
12183                show_error {} . [mc "Ambiguous argument '%s': both revision\
12184                                 and filename" $arg]
12185                exit 1
12186            }
12187        }
12188    } err]} {
12189        # unfortunately we get both stdout and stderr in $err,
12190        # so look for "fatal:".
12191        set i [string first "fatal:" $err]
12192        if {$i > 0} {
12193            set err [string range $err [expr {$i + 6}] end]
12194        }
12195        show_error {} . "[mc "Bad arguments to gitk:"]\n$err"
12196        exit 1
12197    }
12198}
12199
12200set nullid "0000000000000000000000000000000000000000"
12201set nullid2 "0000000000000000000000000000000000000001"
12202set nullfile "/dev/null"
12203
12204set have_tk85 [expr {[package vcompare $tk_version "8.5"] >= 0}]
12205if {![info exists have_ttk]} {
12206    set have_ttk [llength [info commands ::ttk::style]]
12207}
12208set use_ttk [expr {$have_ttk && $want_ttk}]
12209set NS [expr {$use_ttk ? "ttk" : ""}]
12210
12211regexp {^git version ([\d.]*\d)} [exec git version] _ git_version
12212
12213set show_notes {}
12214if {[package vcompare $git_version "1.6.6.2"] >= 0} {
12215    set show_notes "--show-notes"
12216}
12217
12218set appname "gitk"
12219
12220set runq {}
12221set history {}
12222set historyindex 0
12223set fh_serial 0
12224set nhl_names {}
12225set highlight_paths {}
12226set findpattern {}
12227set searchdirn -forwards
12228set boldids {}
12229set boldnameids {}
12230set diffelide {0 0}
12231set markingmatches 0
12232set linkentercount 0
12233set need_redisplay 0
12234set nrows_drawn 0
12235set firsttabstop 0
12236
12237set nextviewnum 1
12238set curview 0
12239set selectedview 0
12240set selectedhlview [mc "None"]
12241set highlight_related [mc "None"]
12242set highlight_files {}
12243set viewfiles(0) {}
12244set viewperm(0) 0
12245set viewargs(0) {}
12246set viewargscmd(0) {}
12247
12248set selectedline {}
12249set numcommits 0
12250set loginstance 0
12251set cmdlineok 0
12252set stopped 0
12253set stuffsaved 0
12254set patchnum 0
12255set lserial 0
12256set hasworktree [hasworktree]
12257set cdup {}
12258if {[expr {[exec git rev-parse --is-inside-work-tree] == "true"}]} {
12259    set cdup [exec git rev-parse --show-cdup]
12260}
12261set worktree [exec git rev-parse --show-toplevel]
12262setcoords
12263makewindow
12264catch {
12265    image create photo gitlogo      -width 16 -height 16
12266
12267    image create photo gitlogominus -width  4 -height  2
12268    gitlogominus put #C00000 -to 0 0 4 2
12269    gitlogo copy gitlogominus -to  1 5
12270    gitlogo copy gitlogominus -to  6 5
12271    gitlogo copy gitlogominus -to 11 5
12272    image delete gitlogominus
12273
12274    image create photo gitlogoplus  -width  4 -height  4
12275    gitlogoplus  put #008000 -to 1 0 3 4
12276    gitlogoplus  put #008000 -to 0 1 4 3
12277    gitlogo copy gitlogoplus  -to  1 9
12278    gitlogo copy gitlogoplus  -to  6 9
12279    gitlogo copy gitlogoplus  -to 11 9
12280    image delete gitlogoplus
12281
12282    image create photo gitlogo32    -width 32 -height 32
12283    gitlogo32 copy gitlogo -zoom 2 2
12284
12285    wm iconphoto . -default gitlogo gitlogo32
12286}
12287# wait for the window to become visible
12288tkwait visibility .
12289wm title . "$appname: [reponame]"
12290update
12291readrefs
12292
12293if {$cmdline_files ne {} || $revtreeargs ne {} || $revtreeargscmd ne {}} {
12294    # create a view for the files/dirs specified on the command line
12295    set curview 1
12296    set selectedview 1
12297    set nextviewnum 2
12298    set viewname(1) [mc "Command line"]
12299    set viewfiles(1) $cmdline_files
12300    set viewargs(1) $revtreeargs
12301    set viewargscmd(1) $revtreeargscmd
12302    set viewperm(1) 0
12303    set vdatemode(1) 0
12304    addviewmenu 1
12305    .bar.view entryconf [mca "Edit view..."] -state normal
12306    .bar.view entryconf [mca "Delete view"] -state normal
12307}
12308
12309if {[info exists permviews]} {
12310    foreach v $permviews {
12311        set n $nextviewnum
12312        incr nextviewnum
12313        set viewname($n) [lindex $v 0]
12314        set viewfiles($n) [lindex $v 1]
12315        set viewargs($n) [lindex $v 2]
12316        set viewargscmd($n) [lindex $v 3]
12317        set viewperm($n) 1
12318        addviewmenu $n
12319    }
12320}
12321
12322if {[tk windowingsystem] eq "win32"} {
12323    focus -force .
12324}
12325
12326getcommits {}
12327
12328# Local variables:
12329# mode: tcl
12330# indent-tabs-mode: t
12331# tab-width: 8
12332# End: