mirror of
https://github.com/git/git.git
synced 2024-11-18 16:53:53 +01:00
416 lines
9.4 KiB
Tcl
416 lines
9.4 KiB
Tcl
# git-gui misc. commit reading/writing support
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# Copyright (C) 2006, 2007 Shawn Pearce
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proc load_last_commit {} {
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global HEAD PARENT MERGE_HEAD commit_type ui_comm
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global repo_config
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if {[llength $PARENT] == 0} {
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error_popup {There is nothing to amend.
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You are about to create the initial commit. There is no commit before this to amend.
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}
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return
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}
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repository_state curType curHEAD curMERGE_HEAD
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if {$curType eq {merge}} {
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error_popup {Cannot amend while merging.
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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.
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}
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return
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}
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set msg {}
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set parents [list]
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if {[catch {
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set fd [git_read cat-file commit $curHEAD]
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fconfigure $fd -encoding binary -translation lf
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if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
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set enc utf-8
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}
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while {[gets $fd line] > 0} {
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if {[string match {parent *} $line]} {
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lappend parents [string range $line 7 end]
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} elseif {[string match {encoding *} $line]} {
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set enc [string tolower [string range $line 9 end]]
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}
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}
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set msg [encoding convertfrom $enc [read $fd]]
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set msg [string trim $msg]
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close $fd
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} err]} {
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error_popup "Error loading commit data for amend:\n\n$err"
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return
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}
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set HEAD $curHEAD
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set PARENT $parents
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set MERGE_HEAD [list]
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switch -- [llength $parents] {
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0 {set commit_type amend-initial}
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1 {set commit_type amend}
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default {set commit_type amend-merge}
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}
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$ui_comm delete 0.0 end
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$ui_comm insert end $msg
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$ui_comm edit reset
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$ui_comm edit modified false
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rescan ui_ready
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}
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set GIT_COMMITTER_IDENT {}
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proc committer_ident {} {
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global GIT_COMMITTER_IDENT
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if {$GIT_COMMITTER_IDENT eq {}} {
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if {[catch {set me [git var GIT_COMMITTER_IDENT]} err]} {
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error_popup "Unable to obtain your identity:\n\n$err"
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return {}
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}
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if {![regexp {^(.*) [0-9]+ [-+0-9]+$} \
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$me me GIT_COMMITTER_IDENT]} {
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error_popup "Invalid GIT_COMMITTER_IDENT:\n\n$me"
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return {}
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}
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}
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return $GIT_COMMITTER_IDENT
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}
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proc do_signoff {} {
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global ui_comm
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set me [committer_ident]
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if {$me eq {}} return
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set sob "Signed-off-by: $me"
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set last [$ui_comm get {end -1c linestart} {end -1c}]
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if {$last ne $sob} {
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$ui_comm edit separator
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if {$last ne {}
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&& ![regexp {^[A-Z][A-Za-z]*-[A-Za-z-]+: *} $last]} {
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$ui_comm insert end "\n"
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}
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$ui_comm insert end "\n$sob"
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$ui_comm edit separator
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$ui_comm see end
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}
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}
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proc create_new_commit {} {
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global commit_type ui_comm
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set commit_type normal
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$ui_comm delete 0.0 end
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$ui_comm edit reset
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$ui_comm edit modified false
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rescan ui_ready
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}
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proc commit_tree {} {
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global HEAD commit_type file_states ui_comm repo_config
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global pch_error
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if {[committer_ident] eq {}} return
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if {![lock_index update]} return
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# -- Our in memory state should match the repository.
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#
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repository_state curType curHEAD curMERGE_HEAD
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if {[string match amend* $commit_type]
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&& $curType eq {normal}
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&& $curHEAD eq $HEAD} {
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} elseif {$commit_type ne $curType || $HEAD ne $curHEAD} {
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info_popup {Last scanned state does not match repository state.
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Another Git program has modified this repository since the last scan. A rescan must be performed before another commit can be created.
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The rescan will be automatically started now.
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}
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unlock_index
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rescan ui_ready
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return
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}
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# -- At least one file should differ in the index.
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#
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set files_ready 0
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foreach path [array names file_states] {
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switch -glob -- [lindex $file_states($path) 0] {
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_? {continue}
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A? -
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D? -
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M? {set files_ready 1}
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U? {
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error_popup "Unmerged files cannot be committed.
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File [short_path $path] has merge conflicts. You must resolve them and add the file before committing.
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"
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unlock_index
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return
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}
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default {
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error_popup "Unknown file state [lindex $s 0] detected.
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File [short_path $path] cannot be committed by this program.
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"
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}
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}
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}
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if {!$files_ready && ![string match *merge $curType]} {
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info_popup {No changes to commit.
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You must add at least 1 file before you can commit.
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}
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unlock_index
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return
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}
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# -- A message is required.
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#
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set msg [string trim [$ui_comm get 1.0 end]]
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regsub -all -line {[ \t\r]+$} $msg {} msg
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if {$msg eq {}} {
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error_popup {Please supply a commit message.
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A good commit message has the following format:
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- First line: Describe in one sentance what you did.
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- Second line: Blank
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- Remaining lines: Describe why this change is good.
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}
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unlock_index
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return
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}
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# -- Run the pre-commit hook.
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#
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set pchook [gitdir hooks pre-commit]
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# On Cygwin [file executable] might lie so we need to ask
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# the shell if the hook is executable. Yes that's annoying.
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#
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if {[is_Cygwin] && [file isfile $pchook]} {
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set pchook [list sh -c [concat \
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"if test -x \"$pchook\";" \
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"then exec \"$pchook\" 2>&1;" \
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"fi"]]
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} elseif {[file executable $pchook]} {
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set pchook [list $pchook |& cat]
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} else {
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commit_writetree $curHEAD $msg
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return
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}
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ui_status {Calling pre-commit hook...}
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set pch_error {}
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set fd_ph [open "| $pchook" r]
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fconfigure $fd_ph -blocking 0 -translation binary
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fileevent $fd_ph readable \
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[list commit_prehook_wait $fd_ph $curHEAD $msg]
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}
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proc commit_prehook_wait {fd_ph curHEAD msg} {
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global pch_error
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append pch_error [read $fd_ph]
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fconfigure $fd_ph -blocking 1
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if {[eof $fd_ph]} {
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if {[catch {close $fd_ph}]} {
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ui_status {Commit declined by pre-commit hook.}
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hook_failed_popup pre-commit $pch_error
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unlock_index
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} else {
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commit_writetree $curHEAD $msg
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}
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set pch_error {}
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return
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}
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fconfigure $fd_ph -blocking 0
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}
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proc commit_writetree {curHEAD msg} {
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ui_status {Committing changes...}
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set fd_wt [git_read write-tree]
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fileevent $fd_wt readable \
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[list commit_committree $fd_wt $curHEAD $msg]
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}
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proc commit_committree {fd_wt curHEAD msg} {
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global HEAD PARENT MERGE_HEAD commit_type
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global current_branch
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global ui_comm selected_commit_type
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global file_states selected_paths rescan_active
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global repo_config
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gets $fd_wt tree_id
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if {$tree_id eq {} || [catch {close $fd_wt} err]} {
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error_popup "write-tree failed:\n\n$err"
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ui_status {Commit failed.}
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unlock_index
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return
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}
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# -- Verify this wasn't an empty change.
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#
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if {$commit_type eq {normal}} {
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set fd_ot [open "| git cat-file commit $PARENT" r]
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fconfigure $fd_ot -encoding binary -translation lf
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set old_tree [gets $fd_ot]
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close $fd_ot
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if {[string equal -length 5 {tree } $old_tree]
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&& [string length $old_tree] == 45} {
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set old_tree [string range $old_tree 5 end]
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} else {
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error "Commit $PARENT appears to be corrupt"
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}
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if {$tree_id eq $old_tree} {
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info_popup {No changes to commit.
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No files were modified by this commit and it was not a merge commit.
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A rescan will be automatically started now.
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}
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unlock_index
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rescan {ui_status {No changes to commit.}}
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return
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}
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}
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# -- Build the message.
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#
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set msg_p [gitdir COMMIT_EDITMSG]
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set msg_wt [open $msg_p w]
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if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
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set enc utf-8
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}
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fconfigure $msg_wt -encoding binary -translation binary
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puts -nonewline $msg_wt [encoding convertto $enc $msg]
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close $msg_wt
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# -- Create the commit.
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#
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set cmd [list commit-tree $tree_id]
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foreach p [concat $PARENT $MERGE_HEAD] {
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lappend cmd -p $p
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}
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lappend cmd <$msg_p
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if {[catch {set cmt_id [eval git $cmd]} err]} {
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error_popup "commit-tree failed:\n\n$err"
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ui_status {Commit failed.}
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unlock_index
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return
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}
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# -- Update the HEAD ref.
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#
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set reflogm commit
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if {$commit_type ne {normal}} {
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append reflogm " ($commit_type)"
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}
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set i [string first "\n" $msg]
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if {$i >= 0} {
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set subject [string range $msg 0 [expr {$i - 1}]]
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} else {
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set subject $msg
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}
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append reflogm {: } $subject
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if {[catch {
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git update-ref -m $reflogm HEAD $cmt_id $curHEAD
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} err]} {
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error_popup "update-ref failed:\n\n$err"
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ui_status {Commit failed.}
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unlock_index
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return
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}
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# -- Cleanup after ourselves.
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#
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catch {file delete $msg_p}
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catch {file delete [gitdir MERGE_HEAD]}
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catch {file delete [gitdir MERGE_MSG]}
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catch {file delete [gitdir SQUASH_MSG]}
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catch {file delete [gitdir GITGUI_MSG]}
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# -- Let rerere do its thing.
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#
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if {[get_config rerere.enabled] eq {}} {
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set rerere [file isdirectory [gitdir rr-cache]]
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} else {
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set rerere [is_config_true rerere.enabled]
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}
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if {$rerere} {
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catch {git rerere}
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}
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# -- Run the post-commit hook.
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#
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set pchook [gitdir hooks post-commit]
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if {[is_Cygwin] && [file isfile $pchook]} {
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set pchook [list sh -c [concat \
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"if test -x \"$pchook\";" \
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"then exec \"$pchook\";" \
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"fi"]]
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} elseif {![file executable $pchook]} {
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set pchook {}
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}
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if {$pchook ne {}} {
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catch {exec $pchook &}
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}
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$ui_comm delete 0.0 end
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$ui_comm edit reset
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$ui_comm edit modified false
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if {[is_enabled singlecommit]} do_quit
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# -- Update in memory status
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#
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set selected_commit_type new
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set commit_type normal
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set HEAD $cmt_id
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set PARENT $cmt_id
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set MERGE_HEAD [list]
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foreach path [array names file_states] {
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set s $file_states($path)
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set m [lindex $s 0]
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switch -glob -- $m {
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_O -
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_M -
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_D {continue}
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__ -
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A_ -
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M_ -
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D_ {
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unset file_states($path)
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catch {unset selected_paths($path)}
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}
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DO {
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set file_states($path) [list _O [lindex $s 1] {} {}]
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}
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AM -
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AD -
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MM -
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MD {
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set file_states($path) [list \
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_[string index $m 1] \
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[lindex $s 1] \
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[lindex $s 3] \
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{}]
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}
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}
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}
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display_all_files
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unlock_index
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reshow_diff
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ui_status "Created commit [string range $cmt_id 0 7]: $subject"
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}
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