547 lines
13 KiB
Tcl
547 lines
13 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 commit_author
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global repo_config
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if {[llength $PARENT] == 0} {
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error_popup [mc "There is nothing to amend.
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You are about to create the initial commit. There is no commit before this to amend.
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"]
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return
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}
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repository_state curType curHEAD curMERGE_HEAD
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if {$curType eq {merge}} {
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error_popup [mc "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 name ""
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set email ""
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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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# By default commits are assumed to be in utf-8
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set enc utf-8
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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 $line 9 end]]
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} elseif {[regexp "author (.*)\\s<(.*)>\\s(\\d.*$)" $line all name email time]} { }
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}
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set msg [read $fd]
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close $fd
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set enc [tcl_encoding $enc]
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if {$enc ne {}} {
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set msg [encoding convertfrom $enc $msg]
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set name [encoding convertfrom $enc $name]
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set email [encoding convertfrom $enc $email]
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}
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if {$name ne {} && $email ne {}} {
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set commit_author [list name $name email $email date $time]
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}
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set msg [string trim $msg]
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} err]} {
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error_popup [strcat [mc "Error loading commit data for amend:"] "\n\n$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 [strcat [mc "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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$me me GIT_COMMITTER_IDENT]} {
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error_popup [strcat [mc "Invalid GIT_COMMITTER_IDENT:"] "\n\n$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 commit_author
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set commit_type normal
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unset -nocomplain commit_author
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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 setup_commit_encoding {msg_wt {quiet 0}} {
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global repo_config
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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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set use_enc [tcl_encoding $enc]
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if {$use_enc ne {}} {
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fconfigure $msg_wt -encoding $use_enc
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} else {
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if {!$quiet} {
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error_popup [mc "warning: Tcl does not support encoding '%s'." $enc]
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}
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fconfigure $msg_wt -encoding utf-8
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}
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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 [mc "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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set s $file_states($path)
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switch -glob -- [lindex $s 0] {
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_? {continue}
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A? -
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D? -
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T? -
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M? {set files_ready 1}
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_U -
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U? {
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error_popup [mc "Unmerged files cannot be committed.
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File %s has merge conflicts. You must resolve them and stage the file before committing.
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" [short_path $path]]
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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 [mc "Unknown file state %s detected.
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File %s cannot be committed by this program.
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" [lindex $s 0] [short_path $path]]
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}
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}
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}
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if {!$files_ready && ![string match *merge $curType] && ![is_enabled nocommit]} {
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info_popup [mc "No changes to commit.
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You must stage at least 1 file before you can commit.
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"]
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unlock_index
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return
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}
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if {[is_enabled nocommitmsg]} { do_quit 0 }
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# -- A message is required.
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#
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set msg [string trim [$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 [mc "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 sentence 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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# -- Build the message file.
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#
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set msg_p [gitdir GITGUI_EDITMSG]
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set msg_wt [open $msg_p w]
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fconfigure $msg_wt -translation lf
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setup_commit_encoding $msg_wt
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puts $msg_wt $msg
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close $msg_wt
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if {[is_enabled nocommit]} { do_quit 0 }
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# -- Run the pre-commit hook.
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#
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set fd_ph [githook_read pre-commit]
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if {$fd_ph eq {}} {
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commit_commitmsg $curHEAD $msg_p
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return
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}
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ui_status [mc "Calling pre-commit hook..."]
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set pch_error {}
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fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
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fileevent $fd_ph readable \
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[list commit_prehook_wait $fd_ph $curHEAD $msg_p]
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}
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proc commit_prehook_wait {fd_ph curHEAD msg_p} {
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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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catch {file delete $msg_p}
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ui_status [mc "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_commitmsg $curHEAD $msg_p
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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 $fd_ph -blocking 0
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}
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proc commit_commitmsg {curHEAD msg_p} {
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global is_detached repo_config
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global pch_error
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if {$is_detached
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&& ![file exists [gitdir rebase-merge head-name]]
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&& [is_config_true gui.warndetachedcommit]} {
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set msg [mc "You are about to commit on a detached head.\
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This is a potentially dangerous thing to do because if you switch\
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to another branch you will lose your changes and it can be difficult\
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to retrieve them later from the reflog. You should probably cancel this\
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commit and create a new branch to continue.\n\
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\n\
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Do you really want to proceed with your Commit?"]
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if {[ask_popup $msg] ne yes} {
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unlock_index
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return
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}
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}
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# -- Run the commit-msg hook.
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#
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set fd_ph [githook_read commit-msg $msg_p]
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if {$fd_ph eq {}} {
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commit_writetree $curHEAD $msg_p
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return
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}
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ui_status [mc "Calling commit-msg hook..."]
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set pch_error {}
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fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
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fileevent $fd_ph readable \
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[list commit_commitmsg_wait $fd_ph $curHEAD $msg_p]
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}
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proc commit_commitmsg_wait {fd_ph curHEAD msg_p} {
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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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catch {file delete $msg_p}
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ui_status [mc "Commit declined by commit-msg hook."]
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hook_failed_popup commit-msg $pch_error
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unlock_index
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} else {
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commit_writetree $curHEAD $msg_p
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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_p} {
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ui_status [mc "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_p]
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}
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proc commit_committree {fd_wt curHEAD msg_p} {
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global HEAD PARENT MERGE_HEAD commit_type commit_author
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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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global env
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gets $fd_wt tree_id
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if {[catch {close $fd_wt} err]} {
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catch {file delete $msg_p}
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error_popup [strcat [mc "write-tree failed:"] "\n\n$err"]
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ui_status [mc "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 [git_read cat-file commit $PARENT]
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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 [mc "Commit %s appears to be corrupt" $PARENT]
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}
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if {$tree_id eq $old_tree} {
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catch {file delete $msg_p}
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info_popup [mc "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 [mc "No changes to commit."]}
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return
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}
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}
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if {[info exists commit_author]} {
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set old_author [commit_author_ident $commit_author]
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}
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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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if {[is_config_true commit.gpgsign]} {
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lappend cmd -S
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}
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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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catch {file delete $msg_p}
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error_popup [strcat [mc "commit-tree failed:"] "\n\n$err"]
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ui_status [mc "Commit failed."]
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unlock_index
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unset -nocomplain commit_author
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commit_author_reset $old_author
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return
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}
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if {[info exists commit_author]} {
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unset -nocomplain commit_author
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commit_author_reset $old_author
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}
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# -- Update the HEAD ref.
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#
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set reflogm commit
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if {$commit_type ne {normal}} {
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append reflogm " ($commit_type)"
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}
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set msg_fd [open $msg_p r]
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setup_commit_encoding $msg_fd 1
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gets $msg_fd subject
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close $msg_fd
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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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catch {file delete $msg_p}
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error_popup [strcat [mc "update-ref failed:"] "\n\n$err"]
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ui_status [mc "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 $msg_p}
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catch {file delete [gitdir MERGE_HEAD]}
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catch {file delete [gitdir MERGE_MSG]}
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catch {file delete [gitdir SQUASH_MSG]}
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catch {file delete [gitdir GITGUI_MSG]}
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catch {file delete [gitdir CHERRY_PICK_HEAD]}
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# -- Let rerere do its thing.
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#
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if {[get_config rerere.enabled] eq {}} {
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set rerere [file isdirectory [gitdir rr-cache]]
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} else {
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set rerere [is_config_true rerere.enabled]
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}
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if {$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 fd_ph [githook_read post-commit]
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if {$fd_ph ne {}} {
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global pch_error
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set pch_error {}
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fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
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fileevent $fd_ph readable \
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[list commit_postcommit_wait $fd_ph $cmt_id]
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}
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$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 {$::GITGUI_BCK_exists} {
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catch {file delete [gitdir GITGUI_BCK]}
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set ::GITGUI_BCK_exists 0
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}
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if {[is_enabled singlecommit]} { do_quit 0 }
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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 -- $m {
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_O -
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_M -
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_D {continue}
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__ -
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A_ -
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M_ -
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T_ -
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D_ {
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unset file_states($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 $s 1] {} {}]
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}
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AM -
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AD -
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AT -
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TM -
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TD -
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MM -
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MT -
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MD {
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set file_states($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 [mc "Created commit %s: %s" [string range $cmt_id 0 7] $subject]
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}
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proc commit_postcommit_wait {fd_ph cmt_id} {
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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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hook_failed_popup post-commit $pch_error 0
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}
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unset 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_author_ident {details} {
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global env
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array set author $details
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set old [array get env GIT_AUTHOR_*]
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set env(GIT_AUTHOR_NAME) $author(name)
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set env(GIT_AUTHOR_EMAIL) $author(email)
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set env(GIT_AUTHOR_DATE) $author(date)
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return $old
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}
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proc commit_author_reset {details} {
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global env
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unset env(GIT_AUTHOR_NAME) env(GIT_AUTHOR_EMAIL) env(GIT_AUTHOR_DATE)
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if {$details ne {}} {
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array set env $details
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}
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}
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