1 # git-gui branch (create/delete) support
2 # Copyright (C) 2006, 2007 Shawn Pearce
4 proc load_all_heads {} {
6 global some_heads_tracking
9 set rh_len [expr {[string length $rh] + 1}]
11 set fd [open "| git for-each-ref --format=%(refname) $rh" r]
12 while {[gets $fd line] > 0} {
13 if {!$some_heads_tracking || ![is_tracking_branch $line]} {
14 lappend all_heads [string range $line $rh_len end]
19 set all_heads [lsort $all_heads]
22 proc load_all_tags {} {
24 set fd [open "| git for-each-ref --sort=-taggerdate --format=%(refname) refs/tags" r]
25 while {[gets $fd line] > 0} {
26 if {![regsub ^refs/tags/ $line {} name]} continue
27 lappend all_tags $name
33 proc populate_branch_menu {} {
34 global all_heads disable_on_lock
37 set last [$m index last]
38 for {set i 0} {$i <= $last} {incr i} {
39 if {[$m type $i] eq {separator}} {
42 foreach a $disable_on_lock {
43 if {[lindex $a 0] ne $m || [lindex $a 2] < $i} {
47 set disable_on_lock $new_dol
52 if {$all_heads ne {}} {
55 foreach b $all_heads {
58 -command [list switch_branch $b] \
59 -variable current_branch \
61 lappend disable_on_lock \
62 [list $m entryconf [$m index last] -state]
66 proc radio_selector {varname value args} {
71 proc switch_branch {new_branch} {
72 global HEAD commit_type current_branch repo_config
74 if {![lock_index switch]} return
76 # -- Our in memory state should match the repository.
78 repository_state curType curHEAD curMERGE_HEAD
79 if {[string match amend* $commit_type]
80 && $curType eq {normal}
81 && $curHEAD eq $HEAD} {
82 } elseif {$commit_type ne $curType || $HEAD ne $curHEAD} {
83 info_popup {Last scanned state does not match repository state.
85 Another Git program has modified this repository since the last scan. A rescan must be performed before the current branch can be changed.
87 The rescan will be automatically started now.
90 rescan {set ui_status_value {Ready.}}
94 # -- Don't do a pointless switch.
96 if {$current_branch eq $new_branch} {
101 if {$repo_config(gui.trustmtime) eq {true}} {
102 switch_branch_stage2 {} $new_branch
104 set ui_status_value {Refreshing file status...}
105 set cmd [list git update-index]
107 lappend cmd --unmerged
108 lappend cmd --ignore-missing
109 lappend cmd --refresh
110 set fd_rf [open "| $cmd" r]
111 fconfigure $fd_rf -blocking 0 -translation binary
112 fileevent $fd_rf readable \
113 [list switch_branch_stage2 $fd_rf $new_branch]
117 proc switch_branch_stage2 {fd_rf new_branch} {
118 global ui_status_value HEAD
122 if {![eof $fd_rf]} return
126 set ui_status_value "Updating working directory to '$new_branch'..."
127 set cmd [list git read-tree]
130 lappend cmd --exclude-per-directory=.gitignore
132 lappend cmd $new_branch
133 set fd_rt [open "| $cmd" r]
134 fconfigure $fd_rt -blocking 0 -translation binary
135 fileevent $fd_rt readable \
136 [list switch_branch_readtree_wait $fd_rt $new_branch]
139 proc switch_branch_readtree_wait {fd_rt new_branch} {
140 global selected_commit_type commit_type HEAD MERGE_HEAD PARENT
141 global current_branch
142 global ui_comm ui_status_value
144 # -- We never get interesting output on stdout; only stderr.
147 fconfigure $fd_rt -blocking 1
149 fconfigure $fd_rt -blocking 0
153 # -- The working directory wasn't in sync with the index and
154 # we'd have to overwrite something to make the switch. A
157 if {[catch {close $fd_rt} err]} {
158 regsub {^fatal: } $err {} err
159 warn_popup "File level merge required.
163 Staying on branch '$current_branch'."
164 set ui_status_value "Aborted checkout of '$new_branch' (file level merging is required)."
169 # -- Update the symbolic ref. Core git doesn't even check for failure
170 # here, it Just Works(tm). If it doesn't we are in some really ugly
171 # state that is difficult to recover from within git-gui.
173 if {[catch {git symbolic-ref HEAD "refs/heads/$new_branch"} err]} {
174 error_popup "Failed to set current branch.
176 This working directory is only partially switched. We successfully updated your files, but failed to update an internal Git file.
178 This should not have occurred. [appname] will now close and give up.
185 # -- Update our repository state. If we were previously in amend mode
186 # we need to toss the current buffer and do a full rescan to update
187 # our file lists. If we weren't in amend mode our file lists are
188 # accurate and we can avoid the rescan.
191 set selected_commit_type new
192 if {[string match amend* $commit_type]} {
193 $ui_comm delete 0.0 end
195 $ui_comm edit modified false
196 rescan {set ui_status_value "Checked out branch '$current_branch'."}
198 repository_state commit_type HEAD MERGE_HEAD
200 set ui_status_value "Checked out branch '$current_branch'."