1 # git-gui misc. commit reading/writing support
2 # Copyright (C) 2006, 2007 Shawn Pearce
4 proc load_last_commit {} {
5 global HEAD PARENT MERGE_HEAD commit_type ui_comm
8 if {[llength $PARENT] == 0} {
9 error_popup [mc "There is nothing to amend.
11 You are about to create the initial commit. There is no commit before this to amend.
16 repository_state curType curHEAD curMERGE_HEAD
17 if {$curType eq {merge}} {
18 error_popup [mc "Cannot amend while merging.
20 You are currently in the middle of a merge that has not been fully completed. You cannot amend the prior commit unless you first abort the current merge activity.
28 set fd [git_read cat-file commit $curHEAD]
29 fconfigure $fd -encoding binary -translation lf
30 if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
33 while {[gets $fd line] > 0} {
34 if {[string match {parent *} $line]} {
35 lappend parents [string range $line 7 end]
36 } elseif {[string match {encoding *} $line]} {
37 set enc [string tolower [string range $line 9 end]]
43 set enc [tcl_encoding $enc]
45 set msg [encoding convertfrom $enc $msg]
47 set msg [string trim $msg]
49 error_popup [strcat [mc "Error loading commit data for amend:"] "\n\n$err"]
56 switch -- [llength $parents] {
57 0 {set commit_type amend-initial}
58 1 {set commit_type amend}
59 default {set commit_type amend-merge}
62 $ui_comm delete 0.0 end
63 $ui_comm insert end $msg
65 $ui_comm edit modified false
69 set GIT_COMMITTER_IDENT {}
71 proc committer_ident {} {
72 global GIT_COMMITTER_IDENT
74 if {$GIT_COMMITTER_IDENT eq {}} {
75 if {[catch {set me [git var GIT_COMMITTER_IDENT]} err]} {
76 error_popup [strcat [mc "Unable to obtain your identity:"] "\n\n$err"]
79 if {![regexp {^(.*) [0-9]+ [-+0-9]+$} \
80 $me me GIT_COMMITTER_IDENT]} {
81 error_popup [strcat [mc "Invalid GIT_COMMITTER_IDENT:"] "\n\n$me"]
86 return $GIT_COMMITTER_IDENT
92 set me [committer_ident]
95 set sob "Signed-off-by: $me"
96 set last [$ui_comm get {end -1c linestart} {end -1c}]
98 $ui_comm edit separator
100 && ![regexp {^[A-Z][A-Za-z]*-[A-Za-z-]+: *} $last]} {
101 $ui_comm insert end "\n"
103 $ui_comm insert end "\n$sob"
104 $ui_comm edit separator
109 proc create_new_commit {} {
110 global commit_type ui_comm
112 set commit_type normal
113 $ui_comm delete 0.0 end
115 $ui_comm edit modified false
119 proc commit_tree {} {
120 global HEAD commit_type file_states ui_comm repo_config
123 if {[committer_ident] eq {}} return
124 if {![lock_index update]} return
126 # -- Our in memory state should match the repository.
128 repository_state curType curHEAD curMERGE_HEAD
129 if {[string match amend* $commit_type]
130 && $curType eq {normal}
131 && $curHEAD eq $HEAD} {
132 } elseif {$commit_type ne $curType || $HEAD ne $curHEAD} {
133 info_popup [mc "Last scanned state does not match repository state.
135 Another Git program has modified this repository since the last scan. A rescan must be performed before another commit can be created.
137 The rescan will be automatically started now.
144 # -- At least one file should differ in the index.
147 foreach path [array names file_states] {
148 switch -glob -- [lindex $file_states($path) 0] {
152 M? {set files_ready 1}
154 error_popup [mc "Unmerged files cannot be committed.
156 File %s has merge conflicts. You must resolve them and stage the file before committing.
157 " [short_path $path]]
162 error_popup [mc "Unknown file state %s detected.
164 File %s cannot be committed by this program.
165 " [lindex $s 0] [short_path $path]]
169 if {!$files_ready && ![string match *merge $curType]} {
170 info_popup [mc "No changes to commit.
172 You must stage at least 1 file before you can commit.
178 # -- A message is required.
180 set msg [string trim [$ui_comm get 1.0 end]]
181 regsub -all -line {[ \t\r]+$} $msg {} msg
183 error_popup [mc "Please supply a commit message.
185 A good commit message has the following format:
187 - First line: Describe in one sentence what you did.
189 - Remaining lines: Describe why this change is good.
195 # -- Run the pre-commit hook.
197 set pchook [gitdir hooks pre-commit]
199 # On Cygwin [file executable] might lie so we need to ask
200 # the shell if the hook is executable. Yes that's annoying.
202 if {[is_Cygwin] && [file isfile $pchook]} {
203 set pchook [list sh -c [concat \
204 "if test -x \"$pchook\";" \
205 "then exec \"$pchook\" 2>&1;" \
207 } elseif {[file executable $pchook]} {
208 set pchook [list $pchook |& cat]
210 commit_writetree $curHEAD $msg
214 ui_status {Calling pre-commit hook...}
216 set fd_ph [open "| $pchook" r]
217 fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
218 fileevent $fd_ph readable \
219 [list commit_prehook_wait $fd_ph $curHEAD $msg]
222 proc commit_prehook_wait {fd_ph curHEAD msg} {
225 append pch_error [read $fd_ph]
226 fconfigure $fd_ph -blocking 1
228 if {[catch {close $fd_ph}]} {
229 ui_status {Commit declined by pre-commit hook.}
230 hook_failed_popup pre-commit $pch_error
233 commit_writetree $curHEAD $msg
238 fconfigure $fd_ph -blocking 0
241 proc commit_writetree {curHEAD msg} {
242 ui_status {Committing changes...}
243 set fd_wt [git_read write-tree]
244 fileevent $fd_wt readable \
245 [list commit_committree $fd_wt $curHEAD $msg]
248 proc commit_committree {fd_wt curHEAD msg} {
249 global HEAD PARENT MERGE_HEAD commit_type
250 global current_branch
251 global ui_comm selected_commit_type
252 global file_states selected_paths rescan_active
256 if {[catch {close $fd_wt} err]} {
257 error_popup [strcat [mc "write-tree failed:"] "\n\n$err"]
258 ui_status {Commit failed.}
263 # -- Verify this wasn't an empty change.
265 if {$commit_type eq {normal}} {
266 set fd_ot [git_read cat-file commit $PARENT]
267 fconfigure $fd_ot -encoding binary -translation lf
268 set old_tree [gets $fd_ot]
271 if {[string equal -length 5 {tree } $old_tree]
272 && [string length $old_tree] == 45} {
273 set old_tree [string range $old_tree 5 end]
275 error [mc "Commit %s appears to be corrupt" $PARENT]
278 if {$tree_id eq $old_tree} {
279 info_popup [mc "No changes to commit.
281 No files were modified by this commit and it was not a merge commit.
283 A rescan will be automatically started now.
286 rescan {ui_status [mc "No changes to commit."]}
291 # -- Build the message.
293 set msg_p [gitdir COMMIT_EDITMSG]
294 set msg_wt [open $msg_p w]
295 fconfigure $msg_wt -translation lf
296 if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
299 set use_enc [tcl_encoding $enc]
300 if {$use_enc ne {}} {
301 fconfigure $msg_wt -encoding $use_enc
303 puts stderr [mc "warning: Tcl does not support encoding '%s'." $enc]
304 fconfigure $msg_wt -encoding utf-8
306 puts -nonewline $msg_wt $msg
309 # -- Create the commit.
311 set cmd [list commit-tree $tree_id]
312 foreach p [concat $PARENT $MERGE_HEAD] {
316 if {[catch {set cmt_id [eval git $cmd]} err]} {
317 error_popup [strcat [mc "commit-tree failed:"] "\n\n$err"]
318 ui_status {Commit failed.}
323 # -- Update the HEAD ref.
326 if {$commit_type ne {normal}} {
327 append reflogm " ($commit_type)"
329 set i [string first "\n" $msg]
331 set subject [string range $msg 0 [expr {$i - 1}]]
335 append reflogm {: } $subject
337 git update-ref -m $reflogm HEAD $cmt_id $curHEAD
339 error_popup [strcat [mc "update-ref failed:"] "\n\n$err"]
340 ui_status {Commit failed.}
345 # -- Cleanup after ourselves.
347 catch {file delete $msg_p}
348 catch {file delete [gitdir MERGE_HEAD]}
349 catch {file delete [gitdir MERGE_MSG]}
350 catch {file delete [gitdir SQUASH_MSG]}
351 catch {file delete [gitdir GITGUI_MSG]}
353 # -- Let rerere do its thing.
355 if {[get_config rerere.enabled] eq {}} {
356 set rerere [file isdirectory [gitdir rr-cache]]
358 set rerere [is_config_true rerere.enabled]
364 # -- Run the post-commit hook.
366 set pchook [gitdir hooks post-commit]
367 if {[is_Cygwin] && [file isfile $pchook]} {
368 set pchook [list sh -c [concat \
369 "if test -x \"$pchook\";" \
370 "then exec \"$pchook\";" \
372 } elseif {![file executable $pchook]} {
376 catch {exec $pchook &}
379 $ui_comm delete 0.0 end
381 $ui_comm edit modified false
382 if {$::GITGUI_BCK_exists} {
383 catch {file delete [gitdir GITGUI_BCK]}
384 set ::GITGUI_BCK_exists 0
387 if {[is_enabled singlecommit]} do_quit
389 # -- Update in memory status
391 set selected_commit_type new
392 set commit_type normal
395 set MERGE_HEAD [list]
397 foreach path [array names file_states] {
398 set s $file_states($path)
408 unset file_states($path)
409 catch {unset selected_paths($path)}
412 set file_states($path) [list _O [lindex $s 1] {} {}]
418 set file_states($path) [list \
419 _[string index $m 1] \
430 ui_status [mc "Created commit %s: %s" [string range $cmt_id 0 7] $subject]