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Diffstat (limited to 'git-gui/lib/merge.tcl')
| -rw-r--r-- | git-gui/lib/merge.tcl | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/git-gui/lib/merge.tcl b/git-gui/lib/merge.tcl new file mode 100644 index 0000000000..0e50919d4c --- /dev/null +++ b/git-gui/lib/merge.tcl @@ -0,0 +1,274 @@ +# git-gui branch merge support +# Copyright (C) 2006, 2007 Shawn Pearce + +class merge { + +field w ; # top level window +field w_rev ; # mega-widget to pick the revision to merge + +method _can_merge {} { + global HEAD commit_type file_states + + if {[string match amend* $commit_type]} { + info_popup {Cannot merge while amending. + +You must finish amending this commit before starting any type of merge. +} + return 0 + } + + if {[committer_ident] eq {}} {return 0} + if {![lock_index merge]} {return 0} + + # -- Our in memory state should match the repository. + # + repository_state curType curHEAD curMERGE_HEAD + if {$commit_type ne $curType || $HEAD ne $curHEAD} { + info_popup {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 a merge can be performed. + +The rescan will be automatically started now. +} + unlock_index + rescan ui_ready + return 0 + } + + foreach path [array names file_states] { + switch -glob -- [lindex $file_states($path) 0] { + _O { + continue; # and pray it works! + } + U? { + error_popup "You are in the middle of a conflicted merge. + +File [short_path $path] has merge conflicts. + +You must resolve them, stage the file, and commit to complete the current merge. Only then can you begin another merge. +" + unlock_index + return 0 + } + ?? { + error_popup "You are in the middle of a change. + +File [short_path $path] is modified. + +You should complete the current commit before starting a merge. Doing so will help you abort a failed merge, should the need arise. +" + unlock_index + return 0 + } + } + } + + return 1 +} + +method _rev {} { + if {[catch {$w_rev commit_or_die}]} { + return {} + } + return [$w_rev get] +} + +method _visualize {} { + set rev [_rev $this] + if {$rev ne {}} { + do_gitk [list $rev --not HEAD] + } +} + +method _start {} { + global HEAD current_branch remote_url + + set name [_rev $this] + if {$name eq {}} { + return + } + + set spec [$w_rev get_tracking_branch] + set cmit [$w_rev get_commit] + + set fh [open [gitdir FETCH_HEAD] w] + fconfigure $fh -translation lf + if {$spec eq {}} { + set remote . + set branch $name + set stitle $branch + } else { + set remote $remote_url([lindex $spec 1]) + if {[regexp {^[^:@]*@[^:]*:/} $remote]} { + regsub {^[^:@]*@} $remote {} remote + } + set branch [lindex $spec 2] + set stitle "$branch of $remote" + } + regsub ^refs/heads/ $branch {} branch + puts $fh "$cmit\t\tbranch '$branch' of $remote" + close $fh + + set cmd [list git] + lappend cmd merge + lappend cmd --strategy=recursive + lappend cmd [git fmt-merge-msg <[gitdir FETCH_HEAD]] + lappend cmd HEAD + lappend cmd $name + + set msg "Merging $current_branch and $stitle" + ui_status "$msg..." + set cons [console::new "Merge" "merge $stitle"] + console::exec $cons $cmd [cb _finish $cons] + + wm protocol $w WM_DELETE_WINDOW {} + destroy $w +} + +method _finish {cons ok} { + console::done $cons $ok + if {$ok} { + set msg {Merge completed successfully.} + } else { + set msg {Merge failed. Conflict resolution is required.} + } + unlock_index + rescan [list ui_status $msg] + delete_this +} + +constructor dialog {} { + global current_branch + global M1B + + if {![_can_merge $this]} { + delete_this + return + } + + make_toplevel top w + wm title $top "[appname] ([reponame]): Merge" + if {$top ne {.}} { + wm geometry $top "+[winfo rootx .]+[winfo rooty .]" + } + + set _start [cb _start] + + label $w.header \ + -text "Merge Into $current_branch" \ + -font font_uibold + pack $w.header -side top -fill x + + frame $w.buttons + button $w.buttons.visualize \ + -text Visualize \ + -command [cb _visualize] + pack $w.buttons.visualize -side left + button $w.buttons.merge \ + -text Merge \ + -command $_start + pack $w.buttons.merge -side right + button $w.buttons.cancel \ + -text {Cancel} \ + -command [cb _cancel] + pack $w.buttons.cancel -side right -padx 5 + pack $w.buttons -side bottom -fill x -pady 10 -padx 10 + + set w_rev [::choose_rev::new_unmerged $w.rev {Revision To Merge}] + pack $w.rev -anchor nw -fill both -expand 1 -pady 5 -padx 5 + + bind $w <$M1B-Key-Return> $_start + bind $w <Key-Return> $_start + bind $w <Key-Escape> [cb _cancel] + wm protocol $w WM_DELETE_WINDOW [cb _cancel] + + bind $w.buttons.merge <Visibility> [cb _visible] + tkwait window $w +} + +method _visible {} { + grab $w + if {[is_config_true gui.matchtrackingbranch]} { + $w_rev pick_tracking_branch + } + $w_rev focus_filter +} + +method _cancel {} { + wm protocol $w WM_DELETE_WINDOW {} + unlock_index + destroy $w + delete_this +} + +} + +namespace eval merge { + +proc reset_hard {} { + global HEAD commit_type file_states + + if {[string match amend* $commit_type]} { + info_popup {Cannot abort while amending. + +You must finish amending this commit. +} + return + } + + if {![lock_index abort]} return + + if {[string match *merge* $commit_type]} { + set op_question "Abort merge? + +Aborting the current merge will cause *ALL* uncommitted changes to be lost. + +Continue with aborting the current merge?" + } else { + set op_question "Reset changes? + +Resetting the changes will cause *ALL* uncommitted changes to be lost. + +Continue with resetting the current changes?" + } + + if {[ask_popup $op_question] eq {yes}} { + set fd [git_read --stderr read-tree --reset -u -v HEAD] + fconfigure $fd -blocking 0 -translation binary + fileevent $fd readable [namespace code [list _reset_wait $fd]] + $::main_status start {Aborting} {files reset} + } else { + unlock_index + } +} + +proc _reset_wait {fd} { + global ui_comm + + $::main_status update_meter [read $fd] + + fconfigure $fd -blocking 1 + if {[eof $fd]} { + set fail [catch {close $fd} err] + $::main_status stop + unlock_index + + $ui_comm delete 0.0 end + $ui_comm edit modified false + + catch {file delete [gitdir MERGE_HEAD]} + catch {file delete [gitdir rr-cache MERGE_RR]} + catch {file delete [gitdir SQUASH_MSG]} + catch {file delete [gitdir MERGE_MSG]} + catch {file delete [gitdir GITGUI_MSG]} + + if {$fail} { + warn_popup "Abort failed.\n\n$err" + } + rescan {ui_status {Abort completed. Ready.}} + } else { + fconfigure $fd -blocking 0 + } +} + +} |