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git-gui: Simplify consecutive lines that come from the same commit
[git/jrn.git] / lib / blame.tcl
blob86160092c662673dfe0d852228097d9a68ed91df
1 # git-gui blame viewer
2 # Copyright (C) 2006, 2007 Shawn Pearce
3
4 class blame {
5
6 field commit ; # input commit to blame
7 field path ; # input filename to view in $commit
8
9 field w
10 field w_line
11 field w_cgrp
12 field w_load
13 field w_file
14 field w_cmit
15 field status
16
17 field highlight_line -1 ; # current line selected
18 field highlight_commit {} ; # sha1 of commit selected
19
20 field total_lines 0 ; # total length of file
21 field blame_lines 0 ; # number of lines computed
22 field commit_count 0 ; # number of commits in $commit_list
23 field commit_list {} ; # list of commit sha1 in receipt order
24 field order ; # array commit -> receipt order
25 field header ; # array commit,key -> header field
26 field line_commit ; # array line -> sha1 commit
27 field line_file ; # array line -> file name
28
29 field r_commit ; # commit currently being parsed
30 field r_orig_line ; # original line number
31 field r_final_line ; # final line number
32 field r_line_count ; # lines in this region
33
34 variable active_color #98e1a0
35 variable group_colors {
36 #cbcbcb
37 #e1e1e1
38 }
39
40 constructor new {i_commit i_path} {
41 set commit $i_commit
42 set path $i_path
43
44 make_toplevel top w
45 wm title $top "[appname] ([reponame]): File Viewer"
46 set status "Loading $commit:$path..."
47
48 label $w.path -text "$commit:$path" \
49 -anchor w \
50 -justify left \
51 -borderwidth 1 \
52 -relief sunken \
53 -font font_uibold
54 pack $w.path -side top -fill x
55
56 frame $w.out
57 set w_load $w.out.loaded_t
58 text $w_load \
59 -background white -borderwidth 0 \
60 -state disabled \
61 -wrap none \
62 -height 40 \
63 -width 1 \
64 -font font_diff
65 $w_load tag conf annotated -background grey
66
67 set w_line $w.out.linenumber_t
68 text $w_line \
69 -background white -borderwidth 0 \
70 -state disabled \
71 -wrap none \
72 -height 40 \
73 -width 5 \
74 -font font_diff
75 $w_line tag conf linenumber -justify right
76
77 set w_cgrp $w.out.commit_t
78 text $w_cgrp \
79 -background white -borderwidth 0 \
80 -state disabled \
81 -wrap none \
82 -height 40 \
83 -width 4 \
84 -font font_diff
85
86 set w_file $w.out.file_t
87 text $w_file \
88 -background white -borderwidth 0 \
89 -state disabled \
90 -wrap none \
91 -height 40 \
92 -width 80 \
93 -xscrollcommand [list $w.out.sbx set] \
94 -font font_diff
95
96 scrollbar $w.out.sbx -orient h -command [list $w_file xview]
97 scrollbar $w.out.sby -orient v \
98 -command [list scrollbar2many [list \
99 $w_load \
100 $w_line \
101 $w_cgrp \
102 $w_file \
103 ] yview]
104 grid \
105 $w_cgrp \
106 $w_line \
107 $w_load \
108 $w_file \
109 $w.out.sby \
110 -sticky nsew
111 grid conf $w.out.sbx -column 3 -sticky we
112 grid columnconfigure $w.out 3 -weight 1
113 grid rowconfigure $w.out 0 -weight 1
114 pack $w.out -fill both -expand 1
115
116 label $w.status \
117 -textvariable @status \
118 -anchor w \
119 -justify left \
120 -borderwidth 1 \
121 -relief sunken
122 pack $w.status -side bottom -fill x
123
124 frame $w.cm
125 set w_cmit $w.cm.t
126 text $w_cmit \
127 -background white -borderwidth 0 \
128 -state disabled \
129 -wrap none \
130 -height 10 \
131 -width 80 \
132 -xscrollcommand [list $w.cm.sbx set] \
133 -yscrollcommand [list $w.cm.sby set] \
134 -font font_diff
135 scrollbar $w.cm.sbx -orient h -command [list $w_cmit xview]
136 scrollbar $w.cm.sby -orient v -command [list $w_cmit yview]
137 pack $w.cm.sby -side right -fill y
138 pack $w.cm.sbx -side bottom -fill x
139 pack $w_cmit -expand 1 -fill both
140 pack $w.cm -side bottom -fill x
141
142 menu $w.ctxm -tearoff 0
143 $w.ctxm add command \
144 -label "Copy Commit" \
145 -command [cb _copycommit]
146
147 foreach i [list \
148 $w_cgrp \
149 $w_load \
150 $w_line \
151 $w_file] {
152 $i conf -yscrollcommand \
153 [list many2scrollbar [list \
154 $w_cgrp \
155 $w_load \
156 $w_line \
157 $w_file \
158 ] yview $w.out.sby]
159 bind $i <Button-1> "[cb _click $i @%x,%y]; focus $i"
160 bind_button3 $i "
161 set cursorX %x
162 set cursorY %y
163 set cursorW %W
164 tk_popup $w.ctxm %X %Y
165 "
166 }
167
168 foreach i [list \
169 $w_cgrp \
170 $w_load \
171 $w_line \
172 $w_file \
173 $w_cmit] {
174 bind $i <Key-Up> {catch {%W yview scroll -1 units};break}
175 bind $i <Key-Down> {catch {%W yview scroll 1 units};break}
176 bind $i <Key-Left> {catch {%W xview scroll -1 units};break}
177 bind $i <Key-Right> {catch {%W xview scroll 1 units};break}
178 bind $i <Key-k> {catch {%W yview scroll -1 units};break}
179 bind $i <Key-j> {catch {%W yview scroll 1 units};break}
180 bind $i <Key-h> {catch {%W xview scroll -1 units};break}
181 bind $i <Key-l> {catch {%W xview scroll 1 units};break}
182 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
183 bind $i <Control-Key-f> {catch {%W yview scroll 1 pages};break}
184 }
185
186 bind $w_cmit <Button-1> [list focus $w_cmit]
187 bind $top <Visibility> [list focus $top]
188 bind $top <Destroy> [list delete_this $this]
189
190 if {$commit eq {}} {
191 set fd [open $path r]
192 } else {
193 set cmd [list git cat-file blob "$commit:$path"]
194 set fd [open "| $cmd" r]
195 }
196 fconfigure $fd -blocking 0 -translation lf -encoding binary
197 fileevent $fd readable [cb _read_file $fd]
198 }
199
200 method _read_file {fd} {
201 $w_load conf -state normal
202 $w_cgrp conf -state normal
203 $w_line conf -state normal
204 $w_file conf -state normal
205 while {[gets $fd line] >= 0} {
206 regsub "\r\$" $line {} line
207 incr total_lines
208
209 if {$total_lines > 1} {
210 $w_load insert end "\n"
211 $w_cgrp insert end "\n"
212 $w_line insert end "\n"
213 $w_file insert end "\n"
214 }
215
216 $w_line insert end "$total_lines" linenumber
217 $w_file insert end "$line"
218 }
219 $w_load conf -state disabled
220 $w_cgrp conf -state disabled
221 $w_line conf -state disabled
222 $w_file conf -state disabled
223
224 if {[eof $fd]} {
225 close $fd
226 _status $this
227 set cmd [list git blame -M -C --incremental]
228 if {$commit eq {}} {
229 lappend cmd --contents $path
230 } else {
231 lappend cmd $commit
232 }
233 lappend cmd -- $path
234 set fd [open "| $cmd" r]
235 fconfigure $fd -blocking 0 -translation lf -encoding binary
236 fileevent $fd readable [cb _read_blame $fd]
237 }
238 } ifdeleted { catch {close $fd} }
239
240 method _read_blame {fd} {
241 variable group_colors
242
243 $w_cgrp conf -state normal
244 while {[gets $fd line] >= 0} {
245 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
246 cmit original_line final_line line_count]} {
247 set r_commit $cmit
248 set r_orig_line $original_line
249 set r_final_line $final_line
250 set r_line_count $line_count
251
252 if {[catch {set g $order($cmit)}]} {
253 set bg [lindex $group_colors 0]
254 set group_colors [lrange $group_colors 1 end]
255 lappend group_colors $bg
256
257 $w_cgrp tag conf g$cmit -background $bg
258 $w_line tag conf g$cmit -background $bg
259 $w_file tag conf g$cmit -background $bg
260
261 set order($cmit) $commit_count
262 incr commit_count
263 lappend commit_list $cmit
264 }
265 } elseif {[string match {filename *} $line]} {
266 set file [string range $line 9 end]
267 set n $r_line_count
268 set lno $r_final_line
269 set cmit $r_commit
270
271 if {[regexp {^0{40}$} $cmit]} {
272 set abbr work
273 } else {
274 set abbr [string range $cmit 0 4]
275 }
276
277 if {![catch {set ncmit $line_commit([expr {$lno - 1}])}]} {
278 if {$ncmit eq $cmit} {
279 set abbr |
280 }
281 }
282
283 while {$n > 0} {
284 set lno_e "$lno.0 lineend + 1c"
285 if {[catch {set g g$line_commit($lno)}]} {
286 $w_load tag add annotated $lno.0 $lno_e
287 } else {
288 $w_cgrp tag remove g$g $lno.0 $lno_e
289 $w_line tag remove g$g $lno.0 $lno_e
290 $w_file tag remove g$g $lno.0 $lno_e
291
292 $w_cgrp tag remove a$g $lno.0 $lno_e
293 $w_line tag remove a$g $lno.0 $lno_e
294 $w_file tag remove a$g $lno.0 $lno_e
295 }
296
297 set line_commit($lno) $cmit
298 set line_file($lno) $file
299
300 $w_cgrp delete $lno.0 "$lno.0 lineend"
301 $w_cgrp insert $lno.0 $abbr
302 set abbr |
303
304 $w_cgrp tag add g$cmit $lno.0 $lno_e
305 $w_line tag add g$cmit $lno.0 $lno_e
306 $w_file tag add g$cmit $lno.0 $lno_e
307
308 $w_cgrp tag add a$cmit $lno.0 $lno_e
309 $w_line tag add a$cmit $lno.0 $lno_e
310 $w_file tag add a$cmit $lno.0 $lno_e
311
312 if {$highlight_line == -1} {
313 if {[lindex [$w_file yview] 0] == 0} {
314 $w_file see $lno.0
315 _showcommit $this $lno
316 }
317 } elseif {$highlight_line == $lno} {
318 _showcommit $this $lno
319 }
320
321 incr n -1
322 incr lno
323 incr blame_lines
324 }
325
326 if {![catch {set ncmit $line_commit($lno)}]} {
327 if {$ncmit eq $cmit} {
328 $w_cgrp delete $lno.0 "$lno.0 lineend + 1c"
329 $w_cgrp insert $lno.0 "|\n"
330 }
331 }
332
333 set hc $highlight_commit
334 if {$hc ne {}
335 && [expr {$order($hc) + 1}] == $order($cmit)} {
336 _showcommit $this $highlight_line
337 }
338 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
339 set header($r_commit,$key) $data
340 }
341 }
342 $w_cgrp conf -state disabled
343
344 if {[eof $fd]} {
345 close $fd
346 set status {Annotation complete.}
347 } else {
348 _status $this
349 }
350 } ifdeleted { catch {close $fd} }
351
352 method _status {} {
353 set have $blame_lines
354 set total $total_lines
355 set pdone 0
356 if {$total} {set pdone [expr {100 * $have / $total}]}
357
358 set status [format \
359 "Loading annotations... %i of %i lines annotated (%2i%%)" \
360 $have $total $pdone]
361 }
362
363 method _click {cur_w pos} {
364 set lno [lindex [split [$cur_w index $pos] .] 0]
365 if {$lno eq {}} return
366 _showcommit $this $lno
367 }
368
369 method _showcommit {lno} {
370 global repo_config
371 variable active_color
372
373 if {$highlight_commit ne {}} {
374 set cmit $highlight_commit
375 $w_cgrp tag conf a$cmit -background {}
376 $w_line tag conf a$cmit -background {}
377 $w_file tag conf a$cmit -background {}
378 }
379
380 $w_cmit conf -state normal
381 $w_cmit delete 0.0 end
382 if {[catch {set cmit $line_commit($lno)}]} {
383 set cmit {}
384 $w_cmit insert end "Loading annotation..."
385 } else {
386 $w_cgrp tag conf a$cmit -background $active_color
387 $w_line tag conf a$cmit -background $active_color
388 $w_file tag conf a$cmit -background $active_color
389
390 set author_name {}
391 set author_email {}
392 set author_time {}
393 catch {set author_name $header($cmit,author)}
394 catch {set author_email $header($cmit,author-mail)}
395 catch {set author_time [clock format \
396 $header($cmit,author-time) \
397 -format {%Y-%m-%d %H:%M:%S}
398 ]}
399
400 set committer_name {}
401 set committer_email {}
402 set committer_time {}
403 catch {set committer_name $header($cmit,committer)}
404 catch {set committer_email $header($cmit,committer-mail)}
405 catch {set committer_time [clock format \
406 $header($cmit,committer-time) \
407 -format {%Y-%m-%d %H:%M:%S}
408 ]}
409
410 if {[catch {set msg $header($cmit,message)}]} {
411 set msg {}
412 catch {
413 set fd [open "| git cat-file commit $cmit" r]
414 fconfigure $fd -encoding binary -translation lf
415 if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
416 set enc utf-8
417 }
418 while {[gets $fd line] > 0} {
419 if {[string match {encoding *} $line]} {
420 set enc [string tolower [string range $line 9 end]]
421 }
422 }
423 set msg [encoding convertfrom $enc [read $fd]]
424 set msg [string trim $msg]
425 close $fd
426
427 set author_name [encoding convertfrom $enc $author_name]
428 set committer_name [encoding convertfrom $enc $committer_name]
429
430 set header($cmit,author) $author_name
431 set header($cmit,committer) $committer_name
432 }
433 set header($cmit,message) $msg
434 }
435
436 $w_cmit insert end "commit $cmit
437 Author: $author_name $author_email $author_time
438 Committer: $committer_name $committer_email $committer_time
439 Original File: [escape_path $line_file($lno)]
440
441 $msg"
442 }
443 $w_cmit conf -state disabled
444
445 set highlight_line $lno
446 set highlight_commit $cmit
447 }
448
449 method _copycommit {} {
450 set pos @$::cursorX,$::cursorY
451 set lno [lindex [split [$::cursorW index $pos] .] 0]
452 if {![catch {set commit $line_commit($lno)}]} {
453 clipboard clear
454 clipboard append \
455 -format STRING \
456 -type STRING \
457 -- $commit
458 }
459 }
460
461 }
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