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# git-gui misc. commit reading/writing support
# Copyright (C) 2006, 2007 Shawn Pearce
proc load_last_commit {} {
global HEAD PARENT MERGE_HEAD commit_type ui_comm
global repo_config
if {[llength $PARENT] == 0} {
error_popup [mc "There is nothing to amend.
You are about to create the initial commit. There is no commit before this to amend.
"]
return
}
repository_state curType curHEAD curMERGE_HEAD
if {$curType eq {merge}} {
error_popup [mc "Cannot amend while merging.
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.
"]
return
}
set msg {}
set parents [list]
if {[catch {
set fd [git_read cat-file commit $curHEAD]
fconfigure $fd -encoding binary -translation lf
if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
set enc utf-8
}
while {[gets $fd line] > 0} {
if {[string match {parent *} $line]} {
lappend parents [string range $line 7 end]
} elseif {[string match {encoding *} $line]} {
set enc [string tolower [string range $line 9 end]]
}
}
set msg [read $fd]
close $fd
set enc [tcl_encoding $enc]
if {$enc ne {}} {
set msg [encoding convertfrom $enc $msg]
}
set msg [string trim $msg]
} err]} {
error_popup [append [mc "Error loading commit data for amend:"] "\n\n$err"]
return
}
set HEAD $curHEAD
set PARENT $parents
set MERGE_HEAD [list]
switch -- [llength $parents] {
0 {set commit_type amend-initial}
1 {set commit_type amend}
default {set commit_type amend-merge}
}
$ui_comm delete 0.0 end
$ui_comm insert end $msg
$ui_comm edit reset
$ui_comm edit modified false
rescan ui_ready
}
set GIT_COMMITTER_IDENT {}
proc committer_ident {} {
global GIT_COMMITTER_IDENT
if {$GIT_COMMITTER_IDENT eq {}} {
if {[catch {set me [git var GIT_COMMITTER_IDENT]} err]} {
error_popup [append [mc "Unable to obtain your identity:"] "\n\n$err"]
return {}
}
if {![regexp {^(.*) [0-9]+ [-+0-9]+$} \
$me me GIT_COMMITTER_IDENT]} {
error_popup [append [mc "Invalid GIT_COMMITTER_IDENT:"] "\n\n$me"]
return {}
}
}
return $GIT_COMMITTER_IDENT
}
proc do_signoff {} {
global ui_comm
set me [committer_ident]
if {$me eq {}} return
set sob "Signed-off-by: $me"
set last [$ui_comm get {end -1c linestart} {end -1c}]
if {$last ne $sob} {
$ui_comm edit separator
if {$last ne {}
&& ![regexp {^[A-Z][A-Za-z]*-[A-Za-z-]+: *} $last]} {
$ui_comm insert end "\n"
}
$ui_comm insert end "\n$sob"
$ui_comm edit separator
$ui_comm see end
}
}
proc create_new_commit {} {
global commit_type ui_comm
set commit_type normal
$ui_comm delete 0.0 end
$ui_comm edit reset
$ui_comm edit modified false
rescan ui_ready
}
proc commit_tree {} {
global HEAD commit_type file_states ui_comm repo_config
global pch_error
if {[committer_ident] eq {}} return
if {![lock_index update]} return
# -- Our in memory state should match the repository.
#
repository_state curType curHEAD curMERGE_HEAD
if {[string match amend* $commit_type]
&& $curType eq {normal}
&& $curHEAD eq $HEAD} {
} elseif {$commit_type ne $curType || $HEAD ne $curHEAD} {
info_popup [mc "Last scanned state does not match repository state.
Another Git program has modified this repository since the last scan. A rescan must be performed before another commit can be created.
The rescan will be automatically started now.
"]
unlock_index
rescan ui_ready
return
}
# -- At least one file should differ in the index.
#
set files_ready 0
foreach path [array names file_states] {
switch -glob -- [lindex $file_states($path) 0] {
_? {continue}
A? -
D? -
M? {set files_ready 1}
U? {
error_popup [mc "Unmerged files cannot be committed.
File %s has merge conflicts. You must resolve them and stage the file before committing.
" [short_path $path]]
unlock_index
return
}
default {
error_popup [mc "Unknown file state %s detected.
File %s cannot be committed by this program.
" [lindex $s 0] [short_path $path]]
}
}
}
if {!$files_ready && ![string match *merge $curType]} {
info_popup [mc "No changes to commit.
You must stage at least 1 file before you can commit.
"]
unlock_index
return
}
# -- A message is required.
#
set msg [string trim [$ui_comm get 1.0 end]]
regsub -all -line {[ \t\r]+$} $msg {} msg
if {$msg eq {}} {
error_popup [mc "Please supply a commit message.
A good commit message has the following format:
- First line: Describe in one sentance what you did.
- Second line: Blank
- Remaining lines: Describe why this change is good.
"]
unlock_index
return
}
# -- Run the pre-commit hook.
#
set pchook [gitdir hooks pre-commit]
# On Cygwin [file executable] might lie so we need to ask
# the shell if the hook is executable. Yes that's annoying.
#
if {[is_Cygwin] && [file isfile $pchook]} {
set pchook [list sh -c [concat \
"if test -x \"$pchook\";" \
"then exec \"$pchook\" 2>&1;" \
"fi"]]
} elseif {[file executable $pchook]} {
set pchook [list $pchook |& cat]
} else {
commit_writetree $curHEAD $msg
return
}
ui_status {Calling pre-commit hook...}
set pch_error {}
set fd_ph [open "| $pchook" r]
fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
fileevent $fd_ph readable \
[list commit_prehook_wait $fd_ph $curHEAD $msg]
}
proc commit_prehook_wait {fd_ph curHEAD msg} {
global pch_error
append pch_error [read $fd_ph]
fconfigure $fd_ph -blocking 1
if {[eof $fd_ph]} {
if {[catch {close $fd_ph}]} {
ui_status {Commit declined by pre-commit hook.}
hook_failed_popup pre-commit $pch_error
unlock_index
} else {
commit_writetree $curHEAD $msg
}
set pch_error {}
return
}
fconfigure $fd_ph -blocking 0
}
proc commit_writetree {curHEAD msg} {
ui_status {Committing changes...}
set fd_wt [git_read write-tree]
fileevent $fd_wt readable \
[list commit_committree $fd_wt $curHEAD $msg]
}
proc commit_committree {fd_wt curHEAD msg} {
global HEAD PARENT MERGE_HEAD commit_type
global current_branch
global ui_comm selected_commit_type
global file_states selected_paths rescan_active
global repo_config
gets $fd_wt tree_id
if {$tree_id eq {} || [catch {close $fd_wt} err]} {
error_popup [append [mc "write-tree failed:"] "\n\n$err"]
ui_status {Commit failed.}
unlock_index
return
}
# -- Verify this wasn't an empty change.
#
if {$commit_type eq {normal}} {
set fd_ot [git_read cat-file commit $PARENT]
fconfigure $fd_ot -encoding binary -translation lf
set old_tree [gets $fd_ot]
close $fd_ot
if {[string equal -length 5 {tree } $old_tree]
&& [string length $old_tree] == 45} {
set old_tree [string range $old_tree 5 end]
} else {
error "Commit $PARENT appears to be corrupt"
}
if {$tree_id eq $old_tree} {
info_popup [mc "No changes to commit.
No files were modified by this commit and it was not a merge commit.
A rescan will be automatically started now.
"]
unlock_index
rescan {ui_status [mc "No changes to commit."]}
return
}
}
# -- Build the message.
#
set msg_p [gitdir COMMIT_EDITMSG]
set msg_wt [open $msg_p w]
fconfigure $msg_wt -translation lf
if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
set enc utf-8
}
set use_enc [tcl_encoding $enc]
if {$use_enc ne {}} {
fconfigure $msg_wt -encoding $use_enc
} else {
puts stderr "warning: Tcl does not support encoding '$enc'."
fconfigure $msg_wt -encoding utf-8
}
puts -nonewline $msg_wt $msg
close $msg_wt
# -- Create the commit.
#
set cmd [list commit-tree $tree_id]
foreach p [concat $PARENT $MERGE_HEAD] {
lappend cmd -p $p
}
lappend cmd <$msg_p
if {[catch {set cmt_id [eval git $cmd]} err]} {
error_popup [append [mc "commit-tree failed:"] "\n\n$err"]
ui_status {Commit failed.}
unlock_index
return
}
# -- Update the HEAD ref.
#
set reflogm commit
if {$commit_type ne {normal}} {
append reflogm " ($commit_type)"
}
set i [string first "\n" $msg]
if {$i >= 0} {
set subject [string range $msg 0 [expr {$i - 1}]]
} else {
set subject $msg
}
append reflogm {: } $subject
if {[catch {
git update-ref -m $reflogm HEAD $cmt_id $curHEAD
} err]} {
error_popup [append [mc "update-ref failed:"] "\n\n$err"]
ui_status {Commit failed.}
unlock_index
return
}
# -- Cleanup after ourselves.
#
catch {file delete $msg_p}
catch {file delete [gitdir MERGE_HEAD]}
catch {file delete [gitdir MERGE_MSG]}
catch {file delete [gitdir SQUASH_MSG]}
catch {file delete [gitdir GITGUI_MSG]}
# -- Let rerere do its thing.
#
if {[get_config rerere.enabled] eq {}} {
set rerere [file isdirectory [gitdir rr-cache]]
} else {
set rerere [is_config_true rerere.enabled]
}
if {$rerere} {
catch {git rerere}
}
# -- Run the post-commit hook.
#
set pchook [gitdir hooks post-commit]
if {[is_Cygwin] && [file isfile $pchook]} {
set pchook [list sh -c [concat \
"if test -x \"$pchook\";" \
"then exec \"$pchook\";" \
"fi"]]
} elseif {![file executable $pchook]} {
set pchook {}
}
if {$pchook ne {}} {
catch {exec $pchook &}
}
$ui_comm delete 0.0 end
$ui_comm edit reset
$ui_comm edit modified false
if {$::GITGUI_BCK_exists} {
catch {file delete [gitdir GITGUI_BCK]}
set ::GITGUI_BCK_exists 0
}
if {[is_enabled singlecommit]} do_quit
# -- Update in memory status
#
set selected_commit_type new
set commit_type normal
set HEAD $cmt_id
set PARENT $cmt_id
set MERGE_HEAD [list]
foreach path [array names file_states] {
set s $file_states($path)
set m [lindex $s 0]
switch -glob -- $m {
_O -
_M -
_D {continue}
__ -
A_ -
M_ -
D_ {
unset file_states($path)
catch {unset selected_paths($path)}
}
DO {
set file_states($path) [list _O [lindex $s 1] {} {}]
}
AM -
AD -
MM -
MD {
set file_states($path) [list \
_[string index $m 1] \
[lindex $s 1] \
[lindex $s 3] \
{}]
}
}
}
display_all_files
unlock_index
reshow_diff
ui_status [mc "Created commit %s: %s" [string range $cmt_id 0 7] $subject]
}
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