git-gui / lib / blame.tclon commit Merge branch 'cb/httpd-test-fix-port' (43a3b02)
   1# git-gui blame viewer
   2# Copyright (C) 2006, 2007 Shawn Pearce
   3
   4class blame {
   5
   6image create photo ::blame::img_back_arrow -data {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}
   7
   8# Persistant data (survives loads)
   9#
  10field history {}; # viewer history: {commit path}
  11field header    ; # array commit,key -> header field
  12
  13# Tk UI control paths
  14#
  15field w          ; # top window in this viewer
  16field w_back     ; # our back button
  17field w_path     ; # label showing the current file path
  18field w_columns  ; # list of all column widgets in the viewer
  19field w_line     ; # text column: all line numbers
  20field w_amov     ; # text column: annotations + move tracking
  21field w_asim     ; # text column: annotations (simple computation)
  22field w_file     ; # text column: actual file data
  23field w_cviewer  ; # pane showing commit message
  24field finder     ; # find mini-dialog frame
  25field gotoline   ; # line goto mini-dialog frame
  26field status     ; # status mega-widget instance
  27field old_height ; # last known height of $w.file_pane
  28
  29
  30# Tk UI colors
  31#
  32variable active_color #c0edc5
  33variable group_colors {
  34        #d6d6d6
  35        #e1e1e1
  36        #ececec
  37}
  38
  39# Current blame data; cleared/reset on each load
  40#
  41field commit               ; # input commit to blame
  42field path                 ; # input filename to view in $commit
  43
  44field current_fd        {} ; # background process running
  45field highlight_line    -1 ; # current line selected
  46field highlight_column  {} ; # current commit column selected
  47field highlight_commit  {} ; # sha1 of commit selected
  48
  49field total_lines       0  ; # total length of file
  50field blame_lines       0  ; # number of lines computed
  51field amov_data            ; # list of {commit origfile origline}
  52field asim_data            ; # list of {commit origfile origline}
  53
  54field r_commit             ; # commit currently being parsed
  55field r_orig_line          ; # original line number
  56field r_final_line         ; # final line number
  57field r_line_count         ; # lines in this region
  58
  59field tooltip_wm        {} ; # Current tooltip toplevel, if open
  60field tooltip_t         {} ; # Text widget in $tooltip_wm
  61field tooltip_timer     {} ; # Current timer event for our tooltip
  62field tooltip_commit    {} ; # Commit(s) in tooltip
  63
  64constructor new {i_commit i_path i_jump} {
  65        global cursor_ptr M1B M1T have_tk85 use_ttk NS
  66        variable active_color
  67        variable group_colors
  68
  69        set commit $i_commit
  70        set path   $i_path
  71
  72        make_toplevel top w
  73        wm title $top [append "[appname] ([reponame]): " [mc "File Viewer"]]
  74
  75        set font_w [font measure font_diff "0"]
  76
  77        gold_frame $w.header
  78        tlabel $w.header.commit_l \
  79                -text [mc "Commit:"] \
  80                -background gold \
  81                -foreground black \
  82                -anchor w \
  83                -justify left
  84        set w_back $w.header.commit_b
  85        tlabel $w_back \
  86                -image ::blame::img_back_arrow \
  87                -borderwidth 0 \
  88                -relief flat \
  89                -state disabled \
  90                -background gold \
  91                -foreground black \
  92                -activebackground gold
  93        bind $w_back <Button-1> "
  94                if {\[$w_back cget -state\] eq {normal}} {
  95                        [cb _history_menu]
  96                }
  97                "
  98        tlabel $w.header.commit \
  99                -textvariable @commit \
 100                -background gold \
 101                -foreground black \
 102                -anchor w \
 103                -justify left
 104        tlabel $w.header.path_l \
 105                -text [mc "File:"] \
 106                -background gold \
 107                -foreground black \
 108                -anchor w \
 109                -justify left
 110        set w_path $w.header.path
 111        tlabel $w_path \
 112                -background gold \
 113                -foreground black \
 114                -anchor w \
 115                -justify left
 116        pack $w.header.commit_l -side left
 117        pack $w_back -side left
 118        pack $w.header.commit -side left
 119        pack $w_path -fill x -side right
 120        pack $w.header.path_l -side right
 121
 122        panedwindow $w.file_pane -orient vertical -borderwidth 0 -sashwidth 3
 123        frame $w.file_pane.out -relief flat -borderwidth 1
 124        frame $w.file_pane.cm -relief sunken -borderwidth 1
 125        $w.file_pane add $w.file_pane.out \
 126                -sticky nsew \
 127                -minsize 100 \
 128                -height 100 \
 129                -width 100
 130        $w.file_pane add $w.file_pane.cm \
 131                -sticky nsew \
 132                -minsize 25 \
 133                -height 25 \
 134                -width 100
 135
 136        set w_line $w.file_pane.out.linenumber_t
 137        text $w_line \
 138                -takefocus 0 \
 139                -highlightthickness 0 \
 140                -padx 0 -pady 0 \
 141                -background white \
 142                -foreground black \
 143                -borderwidth 0 \
 144                -state disabled \
 145                -wrap none \
 146                -height 40 \
 147                -width 6 \
 148                -font font_diff
 149        $w_line tag conf linenumber -justify right -rmargin 5
 150
 151        set w_amov $w.file_pane.out.amove_t
 152        text $w_amov \
 153                -takefocus 0 \
 154                -highlightthickness 0 \
 155                -padx 0 -pady 0 \
 156                -background white \
 157                -foreground black \
 158                -borderwidth 0 \
 159                -state disabled \
 160                -wrap none \
 161                -height 40 \
 162                -width 5 \
 163                -font font_diff
 164        $w_amov tag conf author_abbr -justify right -rmargin 5
 165        $w_amov tag conf curr_commit
 166        $w_amov tag conf prior_commit -foreground blue -underline 1
 167        $w_amov tag bind prior_commit \
 168                <Button-1> \
 169                "[cb _load_commit $w_amov @amov_data @%x,%y];break"
 170
 171        set w_asim $w.file_pane.out.asimple_t
 172        text $w_asim \
 173                -takefocus 0 \
 174                -highlightthickness 0 \
 175                -padx 0 -pady 0 \
 176                -background white \
 177                -foreground black \
 178                -borderwidth 0 \
 179                -state disabled \
 180                -wrap none \
 181                -height 40 \
 182                -width 4 \
 183                -font font_diff
 184        $w_asim tag conf author_abbr -justify right
 185        $w_asim tag conf curr_commit
 186        $w_asim tag conf prior_commit -foreground blue -underline 1
 187        $w_asim tag bind prior_commit \
 188                <Button-1> \
 189                "[cb _load_commit $w_asim @asim_data @%x,%y];break"
 190
 191        set w_file $w.file_pane.out.file_t
 192        text $w_file \
 193                -takefocus 0 \
 194                -highlightthickness 0 \
 195                -padx 0 -pady 0 \
 196                -background white \
 197                -foreground black \
 198                -borderwidth 0 \
 199                -state disabled \
 200                -wrap none \
 201                -height 40 \
 202                -width 80 \
 203                -xscrollcommand [list $w.file_pane.out.sbx set] \
 204                -font font_diff
 205        if {$have_tk85} {
 206                $w_file configure -inactiveselectbackground darkblue
 207        }
 208        $w_file tag conf found \
 209                -background yellow
 210
 211        set w_columns [list $w_amov $w_asim $w_line $w_file]
 212
 213        ${NS}::scrollbar $w.file_pane.out.sbx \
 214                -orient h \
 215                -command [list $w_file xview]
 216        ${NS}::scrollbar $w.file_pane.out.sby \
 217                -orient v \
 218                -command [list scrollbar2many $w_columns yview]
 219        eval grid $w_columns $w.file_pane.out.sby -sticky nsew
 220        grid conf \
 221                $w.file_pane.out.sbx \
 222                -column [expr {[llength $w_columns] - 1}] \
 223                -sticky we
 224        grid columnconfigure \
 225                $w.file_pane.out \
 226                [expr {[llength $w_columns] - 1}] \
 227                -weight 1
 228        grid rowconfigure $w.file_pane.out 0 -weight 1
 229
 230        set finder [::searchbar::new \
 231                $w.file_pane.out.ff $w_file \
 232                -column [expr {[llength $w_columns] - 1}] \
 233                ]
 234
 235        set gotoline [::linebar::new \
 236                $w.file_pane.out.lf $w_file \
 237                -column [expr {[llength $w_columns] - 1}] \
 238                ]
 239
 240        set w_cviewer $w.file_pane.cm.t
 241        text $w_cviewer \
 242                -background white \
 243                -foreground black \
 244                -borderwidth 0 \
 245                -state disabled \
 246                -wrap none \
 247                -height 10 \
 248                -width 80 \
 249                -xscrollcommand [list $w.file_pane.cm.sbx set] \
 250                -yscrollcommand [list $w.file_pane.cm.sby set] \
 251                -font font_diff
 252        $w_cviewer tag conf still_loading \
 253                -font font_uiitalic \
 254                -justify center
 255        $w_cviewer tag conf header_key \
 256                -tabs {3c} \
 257                -background $active_color \
 258                -font font_uibold
 259        $w_cviewer tag conf header_val \
 260                -background $active_color \
 261                -font font_ui
 262        $w_cviewer tag raise sel
 263        ${NS}::scrollbar $w.file_pane.cm.sbx \
 264                -orient h \
 265                -command [list $w_cviewer xview]
 266        ${NS}::scrollbar $w.file_pane.cm.sby \
 267                -orient v \
 268                -command [list $w_cviewer yview]
 269        pack $w.file_pane.cm.sby -side right -fill y
 270        pack $w.file_pane.cm.sbx -side bottom -fill x
 271        pack $w_cviewer -expand 1 -fill both
 272
 273        set status [::status_bar::new $w.status]
 274
 275        menu $w.ctxm -tearoff 0
 276        $w.ctxm add command \
 277                -label [mc "Copy Commit"] \
 278                -command [cb _copycommit]
 279        $w.ctxm add separator
 280        $w.ctxm add command \
 281                -label [mc "Find Text..."] \
 282                -accelerator F7 \
 283                -command [cb _show_finder]
 284        $w.ctxm add command \
 285                -label [mc "Goto Line..."] \
 286                -accelerator "Ctrl-G" \
 287                -command [cb _show_linebar]
 288        menu $w.ctxm.enc
 289        build_encoding_menu $w.ctxm.enc [cb _setencoding]
 290        $w.ctxm add cascade \
 291                -label [mc "Encoding"] \
 292                -menu $w.ctxm.enc
 293        $w.ctxm add command \
 294                -label [mc "Do Full Copy Detection"] \
 295                -command [cb _fullcopyblame]
 296        $w.ctxm add separator
 297        $w.ctxm add command \
 298                -label [mc "Show History Context"] \
 299                -command [cb _gitkcommit]
 300        $w.ctxm add command \
 301                -label [mc "Blame Parent Commit"] \
 302                -command [cb _blameparent]
 303
 304        foreach i $w_columns {
 305                for {set g 0} {$g < [llength $group_colors]} {incr g} {
 306                        $i tag conf color$g -background [lindex $group_colors $g]
 307                }
 308
 309                if {$i eq $w_file} {
 310                        $w_file tag raise found
 311                }
 312                $i tag raise sel
 313
 314                $i conf -cursor $cursor_ptr
 315                $i conf -yscrollcommand \
 316                        "[list ::searchbar::scrolled $finder]
 317                         [list many2scrollbar $w_columns yview $w.file_pane.out.sby]"
 318                bind $i <Button-1> "
 319                        [cb _hide_tooltip]
 320                        [cb _click $i @%x,%y]
 321                        focus $i
 322                "
 323                bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
 324                bind $i <Any-Enter>   [cb _hide_tooltip]
 325                bind $i <Any-Leave>   [cb _hide_tooltip]
 326                bind_button3 $i "
 327                        [cb _hide_tooltip]
 328                        set cursorX %x
 329                        set cursorY %y
 330                        set cursorW %W
 331                        tk_popup $w.ctxm %X %Y
 332                "
 333                bind $i <Shift-Tab> "[list focus $w_cviewer];break"
 334                bind $i <Tab>       "[cb _focus_search $w_cviewer];break"
 335        }
 336
 337        foreach i [concat $w_columns $w_cviewer] {
 338                bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
 339                bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
 340                bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
 341                bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
 342                bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
 343                bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
 344                bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
 345                bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
 346                bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
 347                bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 348        }
 349
 350        bind $w_cviewer <Shift-Tab> "[cb _focus_search $w_file];break"
 351        bind $w_cviewer <Tab>       "[list focus $w_file];break"
 352        bind $w_cviewer <Button-1>   [list focus $w_cviewer]
 353        bind $w_file    <Visibility> [cb _focus_search $w_file]
 354        bind $top       <F7>         [cb _show_finder]
 355        bind $top       <Key-slash>  [cb _show_finder]
 356        bind $top    <Control-Key-s> [cb _show_finder]
 357        bind $top       <Escape>     [list searchbar::hide $finder]
 358        bind $top       <F3>         [list searchbar::find_next $finder]
 359        bind $top       <Shift-F3>   [list searchbar::find_prev $finder]
 360        bind $top    <Control-Key-g> [cb _show_linebar]
 361        catch { bind $top <Shift-Key-XF86_Switch_VT_3> [list searchbar::find_prev $finder] }
 362
 363        grid configure $w.header -sticky ew
 364        grid configure $w.file_pane -sticky nsew
 365        grid configure $w.status -sticky ew
 366        grid columnconfigure $top 0 -weight 1
 367        grid rowconfigure $top 0 -weight 0
 368        grid rowconfigure $top 1 -weight 1
 369        grid rowconfigure $top 2 -weight 0
 370
 371        set req_w [winfo reqwidth  $top]
 372        set req_h [winfo reqheight $top]
 373        set scr_w [expr {[winfo screenwidth $top] - 40}]
 374        set scr_h [expr {[winfo screenheight $top] - 120}]
 375        set opt_w [expr {$font_w * (80 + 5*3 + 3)}]
 376        if {$req_w < $opt_w} {set req_w $opt_w}
 377        if {$req_w > $scr_w} {set req_w $scr_w}
 378        set opt_h [expr {$req_w*4/3}]
 379        if {$req_h < $scr_h} {set req_h $scr_h}
 380        if {$req_h > $opt_h} {set req_h $opt_h}
 381        set g "${req_w}x${req_h}"
 382        wm geometry $top $g
 383        update
 384
 385        set old_height [winfo height $w.file_pane]
 386        $w.file_pane sash place 0 \
 387                [lindex [$w.file_pane sash coord 0] 0] \
 388                [expr {int($old_height * 0.80)}]
 389        bind $w.file_pane <Configure> \
 390        "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 391
 392        wm protocol $top WM_DELETE_WINDOW "destroy $top"
 393        bind $top <Destroy> [cb _handle_destroy %W]
 394
 395        _load $this $i_jump
 396}
 397
 398method _focus_search {win} {
 399        if {[searchbar::visible $finder]} {
 400                focus [searchbar::editor $finder]
 401        } else {
 402                focus $win
 403        }
 404}
 405
 406method _handle_destroy {win} {
 407        if {$win eq $w} {
 408                _kill $this
 409                delete_this
 410        }
 411}
 412
 413method _kill {} {
 414        if {$current_fd ne {}} {
 415                kill_file_process $current_fd
 416                catch {close $current_fd}
 417                set current_fd {}
 418        }
 419}
 420
 421method _load {jump} {
 422        variable group_colors
 423
 424        _hide_tooltip $this
 425
 426        if {$total_lines != 0 || $current_fd ne {}} {
 427                _kill $this
 428
 429                foreach i $w_columns {
 430                        $i conf -state normal
 431                        $i delete 0.0 end
 432                        foreach g [$i tag names] {
 433                                if {[regexp {^g[0-9a-f]{40}$} $g]} {
 434                                        $i tag delete $g
 435                                }
 436                        }
 437                        $i conf -state disabled
 438                }
 439
 440                $w_cviewer conf -state normal
 441                $w_cviewer delete 0.0 end
 442                $w_cviewer conf -state disabled
 443
 444                set highlight_line -1
 445                set highlight_column {}
 446                set highlight_commit {}
 447                set total_lines 0
 448        }
 449
 450        if {$history eq {}} {
 451                $w_back conf -state disabled
 452        } else {
 453                $w_back conf -state normal
 454        }
 455
 456        # Index 0 is always empty.  There is never line 0 as
 457        # we use only 1 based lines, as that matches both with
 458        # git-blame output and with Tk's text widget.
 459        #
 460        set amov_data [list [list]]
 461        set asim_data [list [list]]
 462
 463        $status show [mc "Reading %s..." "$commit:[escape_path $path]"]
 464        $w_path conf -text [escape_path $path]
 465
 466        set do_textconv 0
 467        if {![is_config_false gui.textconv] && [git-version >= 1.7.2]} {
 468                set filter [gitattr $path diff set]
 469                set textconv [get_config [join [list diff $filter textconv] .]]
 470                if {$filter ne {set} && $textconv ne {}} {
 471                        set do_textconv 1
 472                }
 473        }
 474        if {$commit eq {}} {
 475                if {$do_textconv ne 0} {
 476                        # Run textconv with sh -c "..." to allow it to
 477                        # contain command + arguments. On windows, just
 478                        # call the filter command.
 479                        if {![file executable [shellpath]]} {
 480                                set fd [open |[linsert $textconv end $path] r]
 481                        } else {
 482                                set fd [open |[list [shellpath] -c "$textconv \"\$0\"" $path] r]
 483                        }
 484                } else {
 485                        set fd [open $path r]
 486                }
 487                fconfigure $fd -eofchar {}
 488        } else {
 489                if {$do_textconv ne 0} {
 490                        set fd [git_read cat-file --textconv "$commit:$path"]
 491                } else {
 492                        set fd [git_read cat-file blob "$commit:$path"]
 493                }
 494        }
 495        fconfigure $fd \
 496                -blocking 0 \
 497                -translation lf \
 498                -encoding [get_path_encoding $path]
 499        fileevent $fd readable [cb _read_file $fd $jump]
 500        set current_fd $fd
 501}
 502
 503method _history_menu {} {
 504        set m $w.backmenu
 505        if {[winfo exists $m]} {
 506                $m delete 0 end
 507        } else {
 508                menu $m -tearoff 0
 509        }
 510
 511        for {set i [expr {[llength $history] - 1}]
 512                } {$i >= 0} {incr i -1} {
 513                set e [lindex $history $i]
 514                set c [lindex $e 0]
 515                set f [lindex $e 1]
 516
 517                if {[regexp {^[0-9a-f]{40}$} $c]} {
 518                        set t [string range $c 0 8]...
 519                } elseif {$c eq {}} {
 520                        set t {Working Directory}
 521                } else {
 522                        set t $c
 523                }
 524                if {![catch {set summary $header($c,summary)}]} {
 525                        append t " $summary"
 526                        if {[string length $t] > 70} {
 527                                set t [string range $t 0 66]...
 528                        }
 529                }
 530
 531                $m add command -label $t -command [cb _goback $i]
 532        }
 533        set X [winfo rootx $w_back]
 534        set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 535        tk_popup $m $X $Y
 536}
 537
 538method _goback {i} {
 539        set dat [lindex $history $i]
 540        set history [lrange $history 0 [expr {$i - 1}]]
 541        set commit [lindex $dat 0]
 542        set path [lindex $dat 1]
 543        _load $this [lrange $dat 2 5]
 544}
 545
 546method _read_file {fd jump} {
 547        if {$fd ne $current_fd} {
 548                catch {close $fd}
 549                return
 550        }
 551
 552        foreach i $w_columns {$i conf -state normal}
 553        while {[gets $fd line] >= 0} {
 554                regsub "\r\$" $line {} line
 555                incr total_lines
 556                lappend amov_data {}
 557                lappend asim_data {}
 558
 559                if {$total_lines > 1} {
 560                        foreach i $w_columns {$i insert end "\n"}
 561                }
 562
 563                $w_line insert end "$total_lines" linenumber
 564                $w_file insert end "$line"
 565        }
 566
 567        set ln_wc [expr {[string length $total_lines] + 2}]
 568        if {[$w_line cget -width] < $ln_wc} {
 569                $w_line conf -width $ln_wc
 570        }
 571
 572        foreach i $w_columns {$i conf -state disabled}
 573
 574        if {[eof $fd]} {
 575                close $fd
 576
 577                # If we don't force Tk to update the widgets *right now*
 578                # none of our jump commands will cause a change in the UI.
 579                #
 580                update
 581
 582                if {[llength $jump] == 1} {
 583                        set highlight_line [lindex $jump 0]
 584                        $w_file see "$highlight_line.0"
 585                } elseif {[llength $jump] == 4} {
 586                        set highlight_column [lindex $jump 0]
 587                        set highlight_line [lindex $jump 1]
 588                        $w_file xview moveto [lindex $jump 2]
 589                        $w_file yview moveto [lindex $jump 3]
 590                }
 591
 592                _exec_blame $this $w_asim @asim_data \
 593                        [list] \
 594                        [mc "Loading copy/move tracking annotations..."]
 595        }
 596} ifdeleted { catch {close $fd} }
 597
 598method _exec_blame {cur_w cur_d options cur_s} {
 599        lappend options --incremental --encoding=utf-8
 600        if {$commit eq {}} {
 601                lappend options --contents $path
 602        } else {
 603                lappend options $commit
 604        }
 605        lappend options -- $path
 606        set fd [eval git_read --nice blame $options]
 607        fconfigure $fd -blocking 0 -translation lf -encoding utf-8
 608        fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
 609        set current_fd $fd
 610        set blame_lines 0
 611
 612        $status start \
 613                $cur_s \
 614                [mc "lines annotated"]
 615}
 616
 617method _read_blame {fd cur_w cur_d} {
 618        upvar #0 $cur_d line_data
 619        variable group_colors
 620
 621        if {$fd ne $current_fd} {
 622                catch {close $fd}
 623                return
 624        }
 625
 626        $cur_w conf -state normal
 627        while {[gets $fd line] >= 0} {
 628                if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 629                        cmit original_line final_line line_count]} {
 630                        set r_commit     $cmit
 631                        set r_orig_line  $original_line
 632                        set r_final_line $final_line
 633                        set r_line_count $line_count
 634                } elseif {[string match {filename *} $line]} {
 635                        set file [string range $line 9 end]
 636                        set n    $r_line_count
 637                        set lno  $r_final_line
 638                        set oln  $r_orig_line
 639                        set cmit $r_commit
 640
 641                        if {[regexp {^0{40}$} $cmit]} {
 642                                set commit_abbr work
 643                                set commit_type curr_commit
 644                        } elseif {$cmit eq $commit} {
 645                                set commit_abbr this
 646                                set commit_type curr_commit
 647                        } else {
 648                                set commit_type prior_commit
 649                                set commit_abbr [string range $cmit 0 3]
 650                        }
 651
 652                        set author_abbr {}
 653                        set a_name {}
 654                        catch {set a_name $header($cmit,author)}
 655                        while {$a_name ne {}} {
 656                                if {$author_abbr ne {}
 657                                        && [string index $a_name 0] eq {'}} {
 658                                        regsub {^'[^']+'\s+} $a_name {} a_name
 659                                }
 660                                if {![regexp {^([[:upper:]])} $a_name _a]} break
 661                                append author_abbr $_a
 662                                unset _a
 663                                if {![regsub \
 664                                        {^[[:upper:]][^\s]*\s+} \
 665                                        $a_name {} a_name ]} break
 666                        }
 667                        if {$author_abbr eq {}} {
 668                                set author_abbr { |}
 669                        } else {
 670                                set author_abbr [string range $author_abbr 0 3]
 671                        }
 672                        unset a_name
 673
 674                        set first_lno $lno
 675                        while {
 676                           $first_lno > 1
 677                        && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
 678                        && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
 679                        } {
 680                                incr first_lno -1
 681                        }
 682
 683                        set color {}
 684                        if {$first_lno < $lno} {
 685                                foreach g [$w_file tag names $first_lno.0] {
 686                                        if {[regexp {^color[0-9]+$} $g]} {
 687                                                set color $g
 688                                                break
 689                                        }
 690                                }
 691                        } else {
 692                                set i [lsort [concat \
 693                                        [$w_file tag names "[expr {$first_lno - 1}].0"] \
 694                                        [$w_file tag names "[expr {$lno + $n}].0"] \
 695                                        ]]
 696                                for {set g 0} {$g < [llength $group_colors]} {incr g} {
 697                                        if {[lsearch -sorted -exact $i color$g] == -1} {
 698                                                set color color$g
 699                                                break
 700                                        }
 701                                }
 702                        }
 703                        if {$color eq {}} {
 704                                set color color0
 705                        }
 706
 707                        while {$n > 0} {
 708                                set lno_e "$lno.0 lineend + 1c"
 709                                if {[lindex $line_data $lno] ne {}} {
 710                                        set g [lindex $line_data $lno 0]
 711                                        foreach i $w_columns {
 712                                                $i tag remove g$g $lno.0 $lno_e
 713                                        }
 714                                }
 715                                lset line_data $lno [list $cmit $file $oln]
 716
 717                                $cur_w delete $lno.0 "$lno.0 lineend"
 718                                if {$lno == $first_lno} {
 719                                        $cur_w insert $lno.0 $commit_abbr $commit_type
 720                                } elseif {$lno == [expr {$first_lno + 1}]} {
 721                                        $cur_w insert $lno.0 $author_abbr author_abbr
 722                                } else {
 723                                        $cur_w insert $lno.0 { |}
 724                                }
 725
 726                                foreach i $w_columns {
 727                                        if {$cur_w eq $w_amov} {
 728                                                for {set g 0} \
 729                                                        {$g < [llength $group_colors]} \
 730                                                        {incr g} {
 731                                                        $i tag remove color$g $lno.0 $lno_e
 732                                                }
 733                                                $i tag add $color $lno.0 $lno_e
 734                                        }
 735                                        $i tag add g$cmit $lno.0 $lno_e
 736                                }
 737
 738                                if {$highlight_column eq $cur_w} {
 739                                        if {$highlight_line == -1
 740                                         && [lindex [$w_file yview] 0] == 0} {
 741                                                $w_file see $lno.0
 742                                                set highlight_line $lno
 743                                        }
 744                                        if {$highlight_line == $lno} {
 745                                                _showcommit $this $cur_w $lno
 746                                        }
 747                                }
 748
 749                                incr n -1
 750                                incr lno
 751                                incr oln
 752                                incr blame_lines
 753                        }
 754
 755                        while {
 756                           $cmit eq [lindex $line_data $lno 0]
 757                        && $file eq [lindex $line_data $lno 1]
 758                        } {
 759                                $cur_w delete $lno.0 "$lno.0 lineend"
 760
 761                                if {$lno == $first_lno} {
 762                                        $cur_w insert $lno.0 $commit_abbr $commit_type
 763                                } elseif {$lno == [expr {$first_lno + 1}]} {
 764                                        $cur_w insert $lno.0 $author_abbr author_abbr
 765                                } else {
 766                                        $cur_w insert $lno.0 { |}
 767                                }
 768
 769                                if {$cur_w eq $w_amov} {
 770                                        foreach i $w_columns {
 771                                                for {set g 0} \
 772                                                        {$g < [llength $group_colors]} \
 773                                                        {incr g} {
 774                                                        $i tag remove color$g $lno.0 $lno_e
 775                                                }
 776                                                $i tag add $color $lno.0 $lno_e
 777                                        }
 778                                }
 779
 780                                incr lno
 781                        }
 782
 783                } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 784                        set header($r_commit,$key) $data
 785                }
 786        }
 787        $cur_w conf -state disabled
 788
 789        if {[eof $fd]} {
 790                close $fd
 791                if {$cur_w eq $w_asim} {
 792                        # Switches for original location detection
 793                        set threshold [get_config gui.copyblamethreshold]
 794                        set original_options [list "-C$threshold"]
 795
 796                        if {![is_config_true gui.fastcopyblame]} {
 797                                # thorough copy search; insert before the threshold
 798                                set original_options [linsert $original_options 0 -C]
 799                        }
 800                        if {[git-version >= 1.5.3]} {
 801                                lappend original_options -w ; # ignore indentation changes
 802                        }
 803
 804                        _exec_blame $this $w_amov @amov_data \
 805                                $original_options \
 806                                [mc "Loading original location annotations..."]
 807                } else {
 808                        set current_fd {}
 809                        $status stop [mc "Annotation complete."]
 810                }
 811        } else {
 812                $status update $blame_lines $total_lines
 813        }
 814} ifdeleted { catch {close $fd} }
 815
 816method _find_commit_bound {data_list start_idx delta} {
 817        upvar #0 $data_list line_data
 818        set pos $start_idx
 819        set limit       [expr {[llength $line_data] - 1}]
 820        set base_commit [lindex $line_data $pos 0]
 821
 822        while {$pos > 0 && $pos < $limit} {
 823                set new_pos [expr {$pos + $delta}]
 824                if {[lindex $line_data $new_pos 0] ne $base_commit} {
 825                        return $pos
 826                }
 827
 828                set pos $new_pos
 829        }
 830
 831        return $pos
 832}
 833
 834method _fullcopyblame {} {
 835        if {$current_fd ne {}} {
 836                tk_messageBox \
 837                        -icon error \
 838                        -type ok \
 839                        -title [mc "Busy"] \
 840                        -message [mc "Annotation process is already running."]
 841
 842                return
 843        }
 844
 845        # Switches for original location detection
 846        set threshold [get_config gui.copyblamethreshold]
 847        set original_options [list -C -C "-C$threshold"]
 848
 849        if {[git-version >= 1.5.3]} {
 850                lappend original_options -w ; # ignore indentation changes
 851        }
 852
 853        # Find the line range
 854        set pos @$::cursorX,$::cursorY
 855        set lno [lindex [split [$::cursorW index $pos] .] 0]
 856        set min_amov_lno [_find_commit_bound $this @amov_data $lno -1]
 857        set max_amov_lno [_find_commit_bound $this @amov_data $lno 1]
 858        set min_asim_lno [_find_commit_bound $this @asim_data $lno -1]
 859        set max_asim_lno [_find_commit_bound $this @asim_data $lno 1]
 860
 861        if {$min_asim_lno < $min_amov_lno} {
 862                set min_amov_lno $min_asim_lno
 863        }
 864
 865        if {$max_asim_lno > $max_amov_lno} {
 866                set max_amov_lno $max_asim_lno
 867        }
 868
 869        lappend original_options -L "$min_amov_lno,$max_amov_lno"
 870
 871        # Clear lines
 872        for {set i $min_amov_lno} {$i <= $max_amov_lno} {incr i} {
 873                lset amov_data $i [list ]
 874        }
 875
 876        # Start the back-end process
 877        _exec_blame $this $w_amov @amov_data \
 878                $original_options \
 879                [mc "Running thorough copy detection..."]
 880}
 881
 882method _click {cur_w pos} {
 883        set lno [lindex [split [$cur_w index $pos] .] 0]
 884        _showcommit $this $cur_w $lno
 885}
 886
 887method _setencoding {enc} {
 888        force_path_encoding $path $enc
 889        _load $this [list \
 890                $highlight_column \
 891                $highlight_line \
 892                [lindex [$w_file xview] 0] \
 893                [lindex [$w_file yview] 0] \
 894                ]
 895}
 896
 897method _load_commit {cur_w cur_d pos} {
 898        upvar #0 $cur_d line_data
 899        set lno [lindex [split [$cur_w index $pos] .] 0]
 900        set dat [lindex $line_data $lno]
 901        if {$dat ne {}} {
 902                _load_new_commit $this  \
 903                        [lindex $dat 0] \
 904                        [lindex $dat 1] \
 905                        [list [lindex $dat 2]]
 906        }
 907}
 908
 909method _load_new_commit {new_commit new_path jump} {
 910        lappend history [list \
 911                $commit $path \
 912                $highlight_column \
 913                $highlight_line \
 914                [lindex [$w_file xview] 0] \
 915                [lindex [$w_file yview] 0] \
 916                ]
 917
 918        set commit $new_commit
 919        set path   $new_path
 920        _load $this $jump
 921}
 922
 923method _showcommit {cur_w lno} {
 924        global repo_config
 925        variable active_color
 926
 927        if {$highlight_commit ne {}} {
 928                foreach i $w_columns {
 929                        $i tag conf g$highlight_commit -background {}
 930                        $i tag lower g$highlight_commit
 931                }
 932        }
 933
 934        if {$cur_w eq $w_asim} {
 935                set dat [lindex $asim_data $lno]
 936                set highlight_column $w_asim
 937        } else {
 938                set dat [lindex $amov_data $lno]
 939                set highlight_column $w_amov
 940        }
 941
 942        $w_cviewer conf -state normal
 943        $w_cviewer delete 0.0 end
 944
 945        if {$dat eq {}} {
 946                set cmit {}
 947                $w_cviewer insert end [mc "Loading annotation..."] still_loading
 948        } else {
 949                set cmit [lindex $dat 0]
 950                set file [lindex $dat 1]
 951
 952                foreach i $w_columns {
 953                        $i tag conf g$cmit -background $active_color
 954                        $i tag raise g$cmit
 955                        if {$i eq $w_file} {
 956                                $w_file tag raise found
 957                        }
 958                        $i tag raise sel
 959                }
 960
 961                set author_name {}
 962                set author_email {}
 963                set author_time {}
 964                catch {set author_name $header($cmit,author)}
 965                catch {set author_email $header($cmit,author-mail)}
 966                catch {set author_time [format_date $header($cmit,author-time)]}
 967
 968                set committer_name {}
 969                set committer_email {}
 970                set committer_time {}
 971                catch {set committer_name $header($cmit,committer)}
 972                catch {set committer_email $header($cmit,committer-mail)}
 973                catch {set committer_time [format_date $header($cmit,committer-time)]}
 974
 975                if {[catch {set msg $header($cmit,message)}]} {
 976                        set msg {}
 977                        catch {
 978                                set fd [git_read cat-file commit $cmit]
 979                                fconfigure $fd -encoding binary -translation lf
 980                                # By default commits are assumed to be in utf-8
 981                                set enc utf-8
 982                                while {[gets $fd line] > 0} {
 983                                        if {[string match {encoding *} $line]} {
 984                                                set enc [string tolower [string range $line 9 end]]
 985                                        }
 986                                }
 987                                set msg [read $fd]
 988                                close $fd
 989
 990                                set enc [tcl_encoding $enc]
 991                                if {$enc ne {}} {
 992                                        set msg [encoding convertfrom $enc $msg]
 993                                }
 994                                set msg [string trim $msg]
 995                        }
 996                        set header($cmit,message) $msg
 997                }
 998
 999                $w_cviewer insert end "commit $cmit\n" header_key
1000                $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
1001                $w_cviewer insert end "$author_name $author_email" header_val
1002                $w_cviewer insert end "  $author_time\n" header_val
1003
1004                $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
1005                $w_cviewer insert end "$committer_name $committer_email" header_val
1006                $w_cviewer insert end "  $committer_time\n" header_val
1007
1008                if {$file ne $path} {
1009                        $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
1010                        $w_cviewer insert end "[escape_path $file]\n" header_val
1011                }
1012
1013                $w_cviewer insert end "\n$msg"
1014        }
1015        $w_cviewer conf -state disabled
1016
1017        set highlight_line $lno
1018        set highlight_commit $cmit
1019
1020        if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
1021                _hide_tooltip $this
1022        }
1023}
1024
1025method _get_click_amov_info {} {
1026        set pos @$::cursorX,$::cursorY
1027        set lno [lindex [split [$::cursorW index $pos] .] 0]
1028        return [lindex $amov_data $lno]
1029}
1030
1031method _copycommit {} {
1032        set dat [_get_click_amov_info $this]
1033        if {$dat ne {}} {
1034                clipboard clear
1035                clipboard append \
1036                        -format STRING \
1037                        -type STRING \
1038                        -- [lindex $dat 0]
1039        }
1040}
1041
1042method _format_offset_date {base offset} {
1043        set exval [expr {$base + $offset*24*60*60}]
1044        return [clock format $exval -format {%Y-%m-%d}]
1045}
1046
1047method _gitkcommit {} {
1048        global nullid
1049
1050        set dat [_get_click_amov_info $this]
1051        if {$dat ne {}} {
1052                set cmit [lindex $dat 0]
1053
1054                # If the line belongs to the working copy, use HEAD instead
1055                if {$cmit eq $nullid} {
1056                        if {[catch {set cmit [git rev-parse --verify HEAD]} err]} {
1057                                error_popup [strcat [mc "Cannot find HEAD commit:"] "\n\n$err"]
1058                                return;
1059                        }
1060                }
1061
1062                set radius [get_config gui.blamehistoryctx]
1063                set cmdline [list --select-commit=$cmit]
1064
1065                if {$radius > 0} {
1066                        set author_time {}
1067                        set committer_time {}
1068
1069                        catch {set author_time $header($cmit,author-time)}
1070                        catch {set committer_time $header($cmit,committer-time)}
1071
1072                        if {$committer_time eq {}} {
1073                                set committer_time $author_time
1074                        }
1075
1076                        set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
1077                        set before_time [_format_offset_date $this $committer_time $radius]
1078
1079                        lappend cmdline --after=$after_time --before=$before_time
1080                }
1081
1082                lappend cmdline $cmit
1083
1084                set base_rev "HEAD"
1085                if {$commit ne {}} {
1086                        set base_rev $commit
1087                }
1088
1089                if {$base_rev ne $cmit} {
1090                        lappend cmdline $base_rev
1091                }
1092
1093                do_gitk $cmdline
1094        }
1095}
1096
1097method _blameparent {} {
1098        global nullid
1099
1100        set dat [_get_click_amov_info $this]
1101        if {$dat ne {}} {
1102                set cmit [lindex $dat 0]
1103                set new_path [lindex $dat 1]
1104
1105                # Allow using Blame Parent on lines modified in the working copy
1106                if {$cmit eq $nullid} {
1107                        set parent_ref "HEAD"
1108                } else {
1109                        set parent_ref "$cmit^"
1110                }
1111                if {[catch {set cparent [git rev-parse --verify $parent_ref]} err]} {
1112                        error_popup [strcat [mc "Cannot find parent commit:"] "\n\n$err"]
1113                        return;
1114                }
1115
1116                _kill $this
1117
1118                # Generate a diff between the commit and its parent,
1119                # and use the hunks to update the line number.
1120                # Request zero context to simplify calculations.
1121                if {$cmit eq $nullid} {
1122                        set diffcmd [list diff-index --unified=0 $cparent -- $new_path]
1123                } else {
1124                        set diffcmd [list diff-tree --unified=0 $cparent $cmit -- $new_path]
1125                }
1126                if {[catch {set fd [eval git_read $diffcmd]} err]} {
1127                        $status stop [mc "Unable to display parent"]
1128                        error_popup [strcat [mc "Error loading diff:"] "\n\n$err"]
1129                        return
1130                }
1131
1132                set r_orig_line [lindex $dat 2]
1133
1134                fconfigure $fd \
1135                        -blocking 0 \
1136                        -encoding binary \
1137                        -translation binary
1138                fileevent $fd readable [cb _read_diff_load_commit \
1139                        $fd $cparent $new_path $r_orig_line]
1140                set current_fd $fd
1141        }
1142}
1143
1144method _read_diff_load_commit {fd cparent new_path tline} {
1145        if {$fd ne $current_fd} {
1146                catch {close $fd}
1147                return
1148        }
1149
1150        while {[gets $fd line] >= 0} {
1151                if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
1152                        old_line osz old_size new_line nsz new_size]} {
1153
1154                        if {$osz eq {}} { set old_size 1 }
1155                        if {$nsz eq {}} { set new_size 1 }
1156
1157                        if {$new_line <= $tline} {
1158                                if {[expr {$new_line + $new_size}] > $tline} {
1159                                        # Target line within the hunk
1160                                        set line_shift [expr {
1161                                                ($new_size-$old_size)*($tline-$new_line)/$new_size
1162                                                }]
1163                                } else {
1164                                        set line_shift [expr {$new_size-$old_size}]
1165                                }
1166
1167                                set r_orig_line [expr {$r_orig_line - $line_shift}]
1168                        }
1169                }
1170        }
1171
1172        if {[eof $fd]} {
1173                close $fd;
1174                set current_fd {}
1175
1176                _load_new_commit $this  \
1177                        $cparent        \
1178                        $new_path       \
1179                        [list $r_orig_line]
1180        }
1181} ifdeleted { catch {close $fd} }
1182
1183method _show_tooltip {cur_w pos} {
1184        if {$tooltip_wm ne {}} {
1185                _open_tooltip $this $cur_w
1186        } elseif {$tooltip_timer eq {}} {
1187                set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
1188        }
1189}
1190
1191method _open_tooltip {cur_w} {
1192        set tooltip_timer {}
1193        set pos_x [winfo pointerx $cur_w]
1194        set pos_y [winfo pointery $cur_w]
1195        if {[winfo containing $pos_x $pos_y] ne $cur_w} {
1196                _hide_tooltip $this
1197                return
1198        }
1199
1200        if {$tooltip_wm ne "$cur_w.tooltip"} {
1201                _hide_tooltip $this
1202
1203                set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
1204                wm overrideredirect $tooltip_wm 1
1205                wm transient $tooltip_wm [winfo toplevel $cur_w]
1206                set tooltip_t $tooltip_wm.label
1207                text $tooltip_t \
1208                        -takefocus 0 \
1209                        -highlightthickness 0 \
1210                        -relief flat \
1211                        -borderwidth 0 \
1212                        -wrap none \
1213                        -background lightyellow \
1214                        -foreground black
1215                $tooltip_t tag conf section_header -font font_uibold
1216                pack $tooltip_t
1217        } else {
1218                $tooltip_t conf -state normal
1219                $tooltip_t delete 0.0 end
1220        }
1221
1222        set pos @[join [list \
1223                [expr {$pos_x - [winfo rootx $cur_w]}] \
1224                [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1225        set lno [lindex [split [$cur_w index $pos] .] 0]
1226        if {$cur_w eq $w_amov} {
1227                set dat [lindex $amov_data $lno]
1228                set org {}
1229        } else {
1230                set dat [lindex $asim_data $lno]
1231                set org [lindex $amov_data $lno]
1232        }
1233
1234        if {$dat eq {}} {
1235                _hide_tooltip $this
1236                return
1237        }
1238
1239        set cmit [lindex $dat 0]
1240        set tooltip_commit [list $cmit]
1241
1242        set author_name {}
1243        set summary     {}
1244        set author_time {}
1245        catch {set author_name $header($cmit,author)}
1246        catch {set summary     $header($cmit,summary)}
1247        catch {set author_time [format_date $header($cmit,author-time)]}
1248
1249        $tooltip_t insert end "commit $cmit\n"
1250        $tooltip_t insert end "$author_name  $author_time\n"
1251        $tooltip_t insert end "$summary"
1252
1253        if {$org ne {} && [lindex $org 0] ne $cmit} {
1254                set save [$tooltip_t get 0.0 end]
1255                $tooltip_t delete 0.0 end
1256
1257                set cmit [lindex $org 0]
1258                set file [lindex $org 1]
1259                lappend tooltip_commit $cmit
1260
1261                set author_name {}
1262                set summary     {}
1263                set author_time {}
1264                catch {set author_name $header($cmit,author)}
1265                catch {set summary     $header($cmit,summary)}
1266                catch {set author_time [format_date $header($cmit,author-time)]}
1267
1268                $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1269                $tooltip_t insert end "commit $cmit\n"
1270                $tooltip_t insert end "$author_name  $author_time\n"
1271                $tooltip_t insert end "$summary\n"
1272
1273                if {$file ne $path} {
1274                        $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1275                        $tooltip_t insert end "$file\n"
1276                }
1277
1278                $tooltip_t insert end "\n"
1279                $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1280                $tooltip_t insert end $save
1281        }
1282
1283        $tooltip_t conf -state disabled
1284        _position_tooltip $this
1285
1286        # On MacOS raising a window causes it to acquire focus.
1287        # Tk 8.5 on MacOS seems to properly support wm transient,
1288        # so we can safely counter the effect there.
1289        if {$::have_tk85 && [is_MacOSX]} {
1290                update
1291                if {$w eq {}} {
1292                        raise .
1293                } else {
1294                        raise $w
1295                }
1296        }
1297}
1298
1299method _position_tooltip {} {
1300        set max_h [lindex [split [$tooltip_t index end] .] 0]
1301        set max_w 0
1302        for {set i 1} {$i <= $max_h} {incr i} {
1303                set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1304                if {$c > $max_w} {set max_w $c}
1305        }
1306        $tooltip_t conf -width $max_w -height $max_h
1307
1308        set req_w [winfo reqwidth  $tooltip_t]
1309        set req_h [winfo reqheight $tooltip_t]
1310        set pos_x [expr {[winfo pointerx .] +  5}]
1311        set pos_y [expr {[winfo pointery .] + 10}]
1312
1313        set g "${req_w}x${req_h}"
1314        if {[tk windowingsystem] eq "win32" || $pos_x >= 0} {append g +}
1315        append g $pos_x
1316        if {[tk windowingsystem] eq "win32" || $pos_y >= 0} {append g +}
1317        append g $pos_y
1318
1319        wm geometry $tooltip_wm $g
1320        if {![is_MacOSX]} {
1321                raise $tooltip_wm
1322        }
1323}
1324
1325method _hide_tooltip {} {
1326        if {$tooltip_wm ne {}} {
1327                destroy $tooltip_wm
1328                set tooltip_wm {}
1329                set tooltip_commit {}
1330        }
1331        if {$tooltip_timer ne {}} {
1332                after cancel $tooltip_timer
1333                set tooltip_timer {}
1334        }
1335}
1336
1337method _resize {new_height} {
1338        set diff [expr {$new_height - $old_height}]
1339        if {$diff == 0} return
1340
1341        set my [expr {[winfo height $w.file_pane] - 25}]
1342        set o [$w.file_pane sash coord 0]
1343        set ox [lindex $o 0]
1344        set oy [expr {[lindex $o 1] + $diff}]
1345        if {$oy < 0}   {set oy 0}
1346        if {$oy > $my} {set oy $my}
1347        $w.file_pane sash place 0 $ox $oy
1348
1349        set old_height $new_height
1350}
1351
1352method _show_finder {} {
1353        linebar::hide $gotoline
1354        searchbar::show $finder
1355}
1356
1357method _show_linebar {} {
1358        searchbar::hide $finder
1359        linebar::show $gotoline
1360}
1361
1362}