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# 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* $commit_type]} {
info_popup [mc "Cannot merge while amending.
You must finish amending this commit before starting any type of merge.
"]
return 0
}
if {[committer_ident] eq {}} {return 0}
if {![lock_index merge]} {return 0}
# -- Our in memory state should match the repository.
#
repository_state curType curHEAD curMERGE_HEAD
if {$commit_type ne $curType || $HEAD ne $curHEAD} {
info_popup [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 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 -
U? {
error_popup [mc "You are in the middle of a conflicted merge.
File %s has merge conflicts.
You must resolve them, stage the file, and commit to complete the current merge. Only then can you begin another merge.
" [short_path $path]]
unlock_index
return 0
}
?? {
error_popup [mc "You are in the middle of a change.
File %s 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.
" [short_path $path]]
unlock_index
return 0
}
}
}
return 1
}
method _rev {} {
if {[catch {$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
global _last_merged_branch
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 [mc "%s of %s" $branch $remote]
}
regsub ^refs/heads/ $branch {} branch
puts $fh "$cmit\t\tbranch '$branch' of $remote"
close $fh
set _last_merged_branch $branch
if {[git-version >= "2.5.0"]} {
set cmd [list git merge --strategy=recursive FETCH_HEAD]
} else {
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
}
ui_status [mc "Merging %s and %s..." $current_branch $stitle]
set cons [console::new [mc "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 [mc "Merge completed successfully."]
} else {
set msg [mc "Merge failed. Conflict resolution is required."]
}
unlock_index
rescan [list ui_status $msg]
delete_this
}
constructor dialog {} {
global current_branch
global M1B use_ttk NS
if {![_can_merge $this]} {
delete_this
return
}
make_dialog top w
wm title $top [mc "%s (%s): Merge" [appname] [reponame]]
if {$top ne {.}} {
wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
}
set _start [cb _start]
${NS}::label $w.header \
-text [mc "Merge Into %s" $current_branch] \
-font font_uibold
pack $w.header -side top -fill x
${NS}::frame $w.buttons
${NS}::button $w.buttons.visualize \
-text [mc Visualize] \
-command [cb _visualize]
pack $w.buttons.visualize -side left
${NS}::button $w.buttons.merge \
-text [mc Merge] \
-command $_start
pack $w.buttons.merge -side right
${NS}::button $w.buttons.cancel \
-text [mc "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 [mc "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 [mc "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 [mc "Abort merge?
Aborting the current merge will cause *ALL* uncommitted changes to be lost.
Continue with aborting the current merge?"]
} else {
set op_question [mc "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 $fd -blocking 0 -translation binary
set status_bar_operation [$::main_status \
start \
[mc "Aborting"] \
[mc "files reset"]
fileevent $fd readable [namespace code [list \
_reset_wait $fd $status_bar_operation]]
} else {
unlock_index
}
}
proc _reset_wait {fd status_bar_operation} {
global ui_comm
$status_bar_operation update_meter [read $fd]
fconfigure $fd -blocking 1
if {[eof $fd]} {
set fail [catch {close $fd} err]
unlock_index
$status_bar_operation stop
$ui_comm delete 0.0 end
$ui_comm edit modified false
catch {file delete [gitdir MERGE_HEAD]}
catch {file delete [gitdir rr-cache MERGE_RR]}
catch {file delete [gitdir MERGE_RR]}
catch {file delete [gitdir SQUASH_MSG]}
catch {file delete [gitdir MERGE_MSG]}
catch {file delete [gitdir GITGUI_MSG]}
if {$fail} {
warn_popup "[mc "Abort failed."]\n\n$err"
}
rescan {ui_status [mc "Abort completed. Ready."]}
} else {
fconfigure $fd -blocking 0
}
}
}
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