git-am: add --message-id/--no-message-id
[git] / git-gui / lib / blame.tcl
1 # git-gui blame viewer
2 # Copyright (C) 2006, 2007 Shawn Pearce
3
4 class blame {
5
6 image create photo ::blame::img_back_arrow -data {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}
7
8 # Persistent data (survives loads)
9 #
10 field history {}; # viewer history: {commit path}
11 field header    ; # array commit,key -> header field
12
13 # Tk UI control paths
14 #
15 field w          ; # top window in this viewer
16 field w_back     ; # our back button
17 field w_path     ; # label showing the current file path
18 field w_columns  ; # list of all column widgets in the viewer
19 field w_line     ; # text column: all line numbers
20 field w_amov     ; # text column: annotations + move tracking
21 field w_asim     ; # text column: annotations (simple computation)
22 field w_file     ; # text column: actual file data
23 field w_cviewer  ; # pane showing commit message
24 field finder     ; # find mini-dialog frame
25 field gotoline   ; # line goto mini-dialog frame
26 field status     ; # status mega-widget instance
27 field old_height ; # last known height of $w.file_pane
28
29
30 # Tk UI colors
31 #
32 variable active_color #c0edc5
33 variable group_colors {
34         #d6d6d6
35         #e1e1e1
36         #ececec
37 }
38
39 # Current blame data; cleared/reset on each load
40 #
41 field commit               ; # input commit to blame
42 field path                 ; # input filename to view in $commit
43
44 field current_fd        {} ; # background process running
45 field highlight_line    -1 ; # current line selected
46 field highlight_column  {} ; # current commit column selected
47 field highlight_commit  {} ; # sha1 of commit selected
48
49 field total_lines       0  ; # total length of file
50 field blame_lines       0  ; # number of lines computed
51 field amov_data            ; # list of {commit origfile origline}
52 field asim_data            ; # list of {commit origfile origline}
53
54 field r_commit             ; # commit currently being parsed
55 field r_orig_line          ; # original line number
56 field r_final_line         ; # final line number
57 field r_line_count         ; # lines in this region
58
59 field tooltip_wm        {} ; # Current tooltip toplevel, if open
60 field tooltip_t         {} ; # Text widget in $tooltip_wm
61 field tooltip_timer     {} ; # Current timer event for our tooltip
62 field tooltip_commit    {} ; # Commit(s) in tooltip
63
64 constructor 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 0 \
223                 -columnspan [expr {[llength $w_columns] + 1}] \
224                 -sticky we
225         grid columnconfigure \
226                 $w.file_pane.out \
227                 [expr {[llength $w_columns] - 1}] \
228                 -weight 1
229         grid rowconfigure $w.file_pane.out 0 -weight 1
230
231         set finder [::searchbar::new \
232                 $w.file_pane.out.ff $w_file \
233                 -column 0 \
234                 -columnspan [expr {[llength $w_columns] + 1}] \
235                 ]
236
237         set gotoline [::linebar::new \
238                 $w.file_pane.out.lf $w_file \
239                 -column 0 \
240                 -columnspan [expr {[llength $w_columns] + 1}] \
241                 ]
242
243         set w_cviewer $w.file_pane.cm.t
244         text $w_cviewer \
245                 -background white \
246                 -foreground black \
247                 -borderwidth 0 \
248                 -state disabled \
249                 -wrap none \
250                 -height 10 \
251                 -width 80 \
252                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
253                 -yscrollcommand [list $w.file_pane.cm.sby set] \
254                 -font font_diff
255         $w_cviewer tag conf still_loading \
256                 -font font_uiitalic \
257                 -justify center
258         $w_cviewer tag conf header_key \
259                 -tabs {3c} \
260                 -background $active_color \
261                 -font font_uibold
262         $w_cviewer tag conf header_val \
263                 -background $active_color \
264                 -font font_ui
265         $w_cviewer tag raise sel
266         ${NS}::scrollbar $w.file_pane.cm.sbx \
267                 -orient h \
268                 -command [list $w_cviewer xview]
269         ${NS}::scrollbar $w.file_pane.cm.sby \
270                 -orient v \
271                 -command [list $w_cviewer yview]
272         pack $w.file_pane.cm.sby -side right -fill y
273         pack $w.file_pane.cm.sbx -side bottom -fill x
274         pack $w_cviewer -expand 1 -fill both
275
276         set status [::status_bar::new $w.status]
277
278         menu $w.ctxm -tearoff 0
279         $w.ctxm add command \
280                 -label [mc "Copy Commit"] \
281                 -command [cb _copycommit]
282         $w.ctxm add separator
283         $w.ctxm add command \
284                 -label [mc "Find Text..."] \
285                 -accelerator F7 \
286                 -command [cb _show_finder]
287         $w.ctxm add command \
288                 -label [mc "Goto Line..."] \
289                 -accelerator "Ctrl-G" \
290                 -command [cb _show_linebar]
291         menu $w.ctxm.enc
292         build_encoding_menu $w.ctxm.enc [cb _setencoding]
293         $w.ctxm add cascade \
294                 -label [mc "Encoding"] \
295                 -menu $w.ctxm.enc
296         $w.ctxm add command \
297                 -label [mc "Do Full Copy Detection"] \
298                 -command [cb _fullcopyblame]
299         $w.ctxm add separator
300         $w.ctxm add command \
301                 -label [mc "Show History Context"] \
302                 -command [cb _gitkcommit]
303         $w.ctxm add command \
304                 -label [mc "Blame Parent Commit"] \
305                 -command [cb _blameparent]
306
307         foreach i $w_columns {
308                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
309                         $i tag conf color$g -background [lindex $group_colors $g]
310                 }
311
312                 if {$i eq $w_file} {
313                         $w_file tag raise found
314                 }
315                 $i tag raise sel
316
317                 $i conf -cursor $cursor_ptr
318                 $i conf -yscrollcommand \
319                         "[list ::searchbar::scrolled $finder]
320                          [list many2scrollbar $w_columns yview $w.file_pane.out.sby]"
321                 bind $i <Button-1> "
322                         [cb _hide_tooltip]
323                         [cb _click $i @%x,%y]
324                         focus $i
325                 "
326                 bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
327                 bind $i <Any-Enter>   [cb _hide_tooltip]
328                 bind $i <Any-Leave>   [cb _hide_tooltip]
329                 bind_button3 $i "
330                         [cb _hide_tooltip]
331                         set cursorX %x
332                         set cursorY %y
333                         set cursorW %W
334                         tk_popup $w.ctxm %X %Y
335                 "
336                 bind $i <Shift-Tab> "[list focus $w_cviewer];break"
337                 bind $i <Tab>       "[cb _focus_search $w_cviewer];break"
338         }
339
340         foreach i [concat $w_columns $w_cviewer] {
341                 bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
342                 bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
343                 bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
344                 bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
345                 bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
346                 bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
347                 bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
348                 bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
349                 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
350                 bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
351         }
352
353         bind $w_cviewer <Shift-Tab> "[cb _focus_search $w_file];break"
354         bind $w_cviewer <Tab>       "[list focus $w_file];break"
355         bind $w_cviewer <Button-1>   [list focus $w_cviewer]
356         bind $w_file    <Visibility> [cb _focus_search $w_file]
357         bind $top       <F7>         [cb _show_finder]
358         bind $top       <Key-slash>  [cb _show_finder]
359         bind $top    <Control-Key-s> [cb _show_finder]
360         bind $top       <Escape>     [list searchbar::hide $finder]
361         bind $top       <F3>         [list searchbar::find_next $finder]
362         bind $top       <Shift-F3>   [list searchbar::find_prev $finder]
363         bind $top    <Control-Key-g> [cb _show_linebar]
364         catch { bind $top <Shift-Key-XF86_Switch_VT_3> [list searchbar::find_prev $finder] }
365
366         grid configure $w.header -sticky ew
367         grid configure $w.file_pane -sticky nsew
368         grid configure $w.status -sticky ew
369         grid columnconfigure $top 0 -weight 1
370         grid rowconfigure $top 0 -weight 0
371         grid rowconfigure $top 1 -weight 1
372         grid rowconfigure $top 2 -weight 0
373
374         set req_w [winfo reqwidth  $top]
375         set req_h [winfo reqheight $top]
376         set scr_w [expr {[winfo screenwidth $top] - 40}]
377         set scr_h [expr {[winfo screenheight $top] - 120}]
378         set opt_w [expr {$font_w * (80 + 5*3 + 3)}]
379         if {$req_w < $opt_w} {set req_w $opt_w}
380         if {$req_w > $scr_w} {set req_w $scr_w}
381         set opt_h [expr {$req_w*4/3}]
382         if {$req_h < $scr_h} {set req_h $scr_h}
383         if {$req_h > $opt_h} {set req_h $opt_h}
384         set g "${req_w}x${req_h}"
385         wm geometry $top $g
386         update
387
388         set old_height [winfo height $w.file_pane]
389         $w.file_pane sash place 0 \
390                 [lindex [$w.file_pane sash coord 0] 0] \
391                 [expr {int($old_height * 0.80)}]
392         bind $w.file_pane <Configure> \
393         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
394
395         wm protocol $top WM_DELETE_WINDOW "destroy $top"
396         bind $top <Destroy> [cb _handle_destroy %W]
397
398         _load $this $i_jump
399 }
400
401 method _focus_search {win} {
402         if {[searchbar::visible $finder]} {
403                 focus [searchbar::editor $finder]
404         } else {
405                 focus $win
406         }
407 }
408
409 method _handle_destroy {win} {
410         if {$win eq $w} {
411                 _kill $this
412                 delete_this
413         }
414 }
415
416 method _kill {} {
417         if {$current_fd ne {}} {
418                 kill_file_process $current_fd
419                 catch {close $current_fd}
420                 set current_fd {}
421         }
422 }
423
424 method _load {jump} {
425         variable group_colors
426
427         _hide_tooltip $this
428
429         if {$total_lines != 0 || $current_fd ne {}} {
430                 _kill $this
431
432                 foreach i $w_columns {
433                         $i conf -state normal
434                         $i delete 0.0 end
435                         foreach g [$i tag names] {
436                                 if {[regexp {^g[0-9a-f]{40}$} $g]} {
437                                         $i tag delete $g
438                                 }
439                         }
440                         $i conf -state disabled
441                 }
442
443                 $w_cviewer conf -state normal
444                 $w_cviewer delete 0.0 end
445                 $w_cviewer conf -state disabled
446
447                 set highlight_line -1
448                 set highlight_column {}
449                 set highlight_commit {}
450                 set total_lines 0
451         }
452
453         if {$history eq {}} {
454                 $w_back conf -state disabled
455         } else {
456                 $w_back conf -state normal
457         }
458
459         # Index 0 is always empty.  There is never line 0 as
460         # we use only 1 based lines, as that matches both with
461         # git-blame output and with Tk's text widget.
462         #
463         set amov_data [list [list]]
464         set asim_data [list [list]]
465
466         $status show [mc "Reading %s..." "$commit:[escape_path $path]"]
467         $w_path conf -text [escape_path $path]
468
469         set do_textconv 0
470         if {![is_config_false gui.textconv] && [git-version >= 1.7.2]} {
471                 set filter [gitattr $path diff set]
472                 set textconv [get_config [join [list diff $filter textconv] .]]
473                 if {$filter ne {set} && $textconv ne {}} {
474                         set do_textconv 1
475                 }
476         }
477         if {$commit eq {}} {
478                 if {$do_textconv ne 0} {
479                         set fd [open_cmd_pipe $textconv $path]
480                 } else {
481                         set fd [open $path r]
482                 }
483                 fconfigure $fd -eofchar {}
484         } else {
485                 if {$do_textconv ne 0} {
486                         set fd [git_read cat-file --textconv "$commit:$path"]
487                 } else {
488                         set fd [git_read cat-file blob "$commit:$path"]
489                 }
490         }
491         fconfigure $fd \
492                 -blocking 0 \
493                 -translation lf \
494                 -encoding [get_path_encoding $path]
495         fileevent $fd readable [cb _read_file $fd $jump]
496         set current_fd $fd
497 }
498
499 method _history_menu {} {
500         set m $w.backmenu
501         if {[winfo exists $m]} {
502                 $m delete 0 end
503         } else {
504                 menu $m -tearoff 0
505         }
506
507         for {set i [expr {[llength $history] - 1}]
508                 } {$i >= 0} {incr i -1} {
509                 set e [lindex $history $i]
510                 set c [lindex $e 0]
511                 set f [lindex $e 1]
512
513                 if {[regexp {^[0-9a-f]{40}$} $c]} {
514                         set t [string range $c 0 8]...
515                 } elseif {$c eq {}} {
516                         set t {Working Directory}
517                 } else {
518                         set t $c
519                 }
520                 if {![catch {set summary $header($c,summary)}]} {
521                         append t " $summary"
522                         if {[string length $t] > 70} {
523                                 set t [string range $t 0 66]...
524                         }
525                 }
526
527                 $m add command -label $t -command [cb _goback $i]
528         }
529         set X [winfo rootx $w_back]
530         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
531         tk_popup $m $X $Y
532 }
533
534 method _goback {i} {
535         set dat [lindex $history $i]
536         set history [lrange $history 0 [expr {$i - 1}]]
537         set commit [lindex $dat 0]
538         set path [lindex $dat 1]
539         _load $this [lrange $dat 2 5]
540 }
541
542 method _read_file {fd jump} {
543         if {$fd ne $current_fd} {
544                 catch {close $fd}
545                 return
546         }
547
548         foreach i $w_columns {$i conf -state normal}
549         while {[gets $fd line] >= 0} {
550                 regsub "\r\$" $line {} line
551                 incr total_lines
552                 lappend amov_data {}
553                 lappend asim_data {}
554
555                 if {$total_lines > 1} {
556                         foreach i $w_columns {$i insert end "\n"}
557                 }
558
559                 $w_line insert end "$total_lines" linenumber
560                 $w_file insert end "$line"
561         }
562
563         set ln_wc [expr {[string length $total_lines] + 2}]
564         if {[$w_line cget -width] < $ln_wc} {
565                 $w_line conf -width $ln_wc
566         }
567
568         foreach i $w_columns {$i conf -state disabled}
569
570         if {[eof $fd]} {
571                 fconfigure $fd -blocking 1; # enable error reporting on close
572                 if {[catch {close $fd} err]} {
573                         tk_messageBox -icon error -title [mc Error] \
574                                 -message $err
575                 }
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 $fd} }
597
598 method _exec_blame {cur_w cur_d options cur_s} {
599         lappend options --incremental --encoding=utf-8
600         if {$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
617 method _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
816 method _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 $pos
832 }
833
834 method _fullcopyblame {} {
835         if {$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                 $original_options \
879                 [mc "Running thorough copy detection..."]
880 }
881
882 method _click {cur_w pos} {
883         set lno [lindex [split [$cur_w index $pos] .] 0]
884         _showcommit $this $cur_w $lno
885 }
886
887 method _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
897 method _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
909 method _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 $jump
921 }
922
923 method _showcommit {cur_w lno} {
924         global repo_config
925         variable active_color
926
927         if {$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 $this
1022         }
1023 }
1024
1025 method _get_click_amov_info {} {
1026         set pos @$::cursorX,$::cursorY
1027         set lno [lindex [split [$::cursorW index $pos] .] 0]
1028         return [lindex $amov_data $lno]
1029 }
1030
1031 method _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 $dat 0]
1039         }
1040 }
1041
1042 method _format_offset_date {base offset} {
1043         set exval [expr {$base + $offset*24*60*60}]
1044         return [clock format $exval -format {%Y-%m-%d}]
1045 }
1046
1047 method _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
1097 method _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 $fd
1141         }
1142 }
1143
1144 method _read_diff_load_commit {fd cparent new_path tline} {
1145         if {$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 $fd} }
1182
1183 method _show_tooltip {cur_w pos} {
1184         if {$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
1191 method _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                 catch {wm attributes $tooltip_wm -type tooltip}
1205                 wm overrideredirect $tooltip_wm 1
1206                 wm transient $tooltip_wm [winfo toplevel $cur_w]
1207                 set tooltip_t $tooltip_wm.label
1208                 text $tooltip_t \
1209                         -takefocus 0 \
1210                         -highlightthickness 0 \
1211                         -relief flat \
1212                         -borderwidth 0 \
1213                         -wrap none \
1214                         -background lightyellow \
1215                         -foreground black
1216                 $tooltip_t tag conf section_header -font font_uibold
1217                 pack $tooltip_t
1218         } else {
1219                 $tooltip_t conf -state normal
1220                 $tooltip_t delete 0.0 end
1221         }
1222
1223         set pos @[join [list \
1224                 [expr {$pos_x - [winfo rootx $cur_w]}] \
1225                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1226         set lno [lindex [split [$cur_w index $pos] .] 0]
1227         if {$cur_w eq $w_amov} {
1228                 set dat [lindex $amov_data $lno]
1229                 set org {}
1230         } else {
1231                 set dat [lindex $asim_data $lno]
1232                 set org [lindex $amov_data $lno]
1233         }
1234
1235         if {$dat eq {}} {
1236                 _hide_tooltip $this
1237                 return
1238         }
1239
1240         set cmit [lindex $dat 0]
1241         set tooltip_commit [list $cmit]
1242
1243         set author_name {}
1244         set summary     {}
1245         set author_time {}
1246         catch {set author_name $header($cmit,author)}
1247         catch {set summary     $header($cmit,summary)}
1248         catch {set author_time [format_date $header($cmit,author-time)]}
1249
1250         $tooltip_t insert end "commit $cmit\n"
1251         $tooltip_t insert end "$author_name  $author_time\n"
1252         $tooltip_t insert end "$summary"
1253
1254         if {$org ne {} && [lindex $org 0] ne $cmit} {
1255                 set save [$tooltip_t get 0.0 end]
1256                 $tooltip_t delete 0.0 end
1257
1258                 set cmit [lindex $org 0]
1259                 set file [lindex $org 1]
1260                 lappend tooltip_commit $cmit
1261
1262                 set author_name {}
1263                 set summary     {}
1264                 set author_time {}
1265                 catch {set author_name $header($cmit,author)}
1266                 catch {set summary     $header($cmit,summary)}
1267                 catch {set author_time [format_date $header($cmit,author-time)]}
1268
1269                 $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1270                 $tooltip_t insert end "commit $cmit\n"
1271                 $tooltip_t insert end "$author_name  $author_time\n"
1272                 $tooltip_t insert end "$summary\n"
1273
1274                 if {$file ne $path} {
1275                         $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1276                         $tooltip_t insert end "$file\n"
1277                 }
1278
1279                 $tooltip_t insert end "\n"
1280                 $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1281                 $tooltip_t insert end $save
1282         }
1283
1284         $tooltip_t conf -state disabled
1285         _position_tooltip $this
1286
1287         # On MacOS raising a window causes it to acquire focus.
1288         # Tk 8.5 on MacOS seems to properly support wm transient,
1289         # so we can safely counter the effect there.
1290         if {$::have_tk85 && [is_MacOSX]} {
1291                 update
1292                 if {$w eq {}} {
1293                         raise .
1294                 } else {
1295                         raise $w
1296                 }
1297         }
1298 }
1299
1300 method _position_tooltip {} {
1301         set max_h [lindex [split [$tooltip_t index end] .] 0]
1302         set max_w 0
1303         for {set i 1} {$i <= $max_h} {incr i} {
1304                 set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1305                 if {$c > $max_w} {set max_w $c}
1306         }
1307         $tooltip_t conf -width $max_w -height $max_h
1308
1309         set req_w [winfo reqwidth  $tooltip_t]
1310         set req_h [winfo reqheight $tooltip_t]
1311         set pos_x [expr {[winfo pointerx .] +  5}]
1312         set pos_y [expr {[winfo pointery .] + 10}]
1313
1314         set g "${req_w}x${req_h}"
1315         if {[tk windowingsystem] eq "win32" || $pos_x >= 0} {append g +}
1316         append g $pos_x
1317         if {[tk windowingsystem] eq "win32" || $pos_y >= 0} {append g +}
1318         append g $pos_y
1319
1320         wm geometry $tooltip_wm $g
1321         if {![is_MacOSX]} {
1322                 raise $tooltip_wm
1323         }
1324 }
1325
1326 method _hide_tooltip {} {
1327         if {$tooltip_wm ne {}} {
1328                 destroy $tooltip_wm
1329                 set tooltip_wm {}
1330                 set tooltip_commit {}
1331         }
1332         if {$tooltip_timer ne {}} {
1333                 after cancel $tooltip_timer
1334                 set tooltip_timer {}
1335         }
1336 }
1337
1338 method _resize {new_height} {
1339         set diff [expr {$new_height - $old_height}]
1340         if {$diff == 0} return
1341
1342         set my [expr {[winfo height $w.file_pane] - 25}]
1343         set o [$w.file_pane sash coord 0]
1344         set ox [lindex $o 0]
1345         set oy [expr {[lindex $o 1] + $diff}]
1346         if {$oy < 0}   {set oy 0}
1347         if {$oy > $my} {set oy $my}
1348         $w.file_pane sash place 0 $ox $oy
1349
1350         set old_height $new_height
1351 }
1352
1353 method _show_finder {} {
1354         linebar::hide $gotoline
1355         searchbar::show $finder
1356 }
1357
1358 method _show_linebar {} {
1359         searchbar::hide $finder
1360         linebar::show $gotoline
1361 }
1362
1363 }