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# git-gui branch (create/delete) support
# Copyright (C) 2006, 2007 Shawn Pearce
proc load_all_heads {} {
global all_heads
global some_heads_tracking
set rh refs/heads
set rh_len [expr {[string length $rh] + 1}]
set all_heads [list]
set fd [open "| git for-each-ref --format=%(refname) $rh" r]
while {[gets $fd line] > 0} {
if {!$some_heads_tracking || ![is_tracking_branch $line]} {
lappend all_heads [string range $line $rh_len end]
}
}
close $fd
set all_heads [lsort $all_heads]
}
proc load_all_tags {} {
set all_tags [list]
set fd [open "| git for-each-ref --format=%(refname) refs/tags" r]
while {[gets $fd line] > 0} {
if {![regsub ^refs/tags/ $line {} name]} continue
lappend all_tags $name
}
close $fd
return [lsort $all_tags]
}
proc populate_branch_menu {} {
global all_heads disable_on_lock
set m .mbar.branch
set last [$m index last]
for {set i 0} {$i <= $last} {incr i} {
if {[$m type $i] eq {separator}} {
$m delete $i last
set new_dol [list]
foreach a $disable_on_lock {
if {[lindex $a 0] ne $m || [lindex $a 2] < $i} {
lappend new_dol $a
}
}
set disable_on_lock $new_dol
break
}
}
if {$all_heads ne {}} {
$m add separator
}
foreach b $all_heads {
$m add radiobutton \
-label $b \
-command [list switch_branch $b] \
-variable current_branch \
-value $b
lappend disable_on_lock \
[list $m entryconf [$m index last] -state]
}
}
proc radio_selector {varname value args} {
upvar #0 $varname var
set var $value
}
proc switch_branch {new_branch} {
global HEAD commit_type current_branch repo_config
if {![lock_index switch]} return
# -- Our in memory state should match the repository.
#
repository_state curType curHEAD curMERGE_HEAD
if {[string match amend* $commit_type]
&& $curType eq {normal}
&& $curHEAD eq $HEAD} {
} elseif {$commit_type ne $curType || $HEAD ne $curHEAD} {
info_popup {Last scanned state does not match repository state.
Another Git program has modified this repository since the last scan. A rescan must be performed before the current branch can be changed.
The rescan will be automatically started now.
}
unlock_index
rescan {set ui_status_value {Ready.}}
return
}
# -- Don't do a pointless switch.
#
if {$current_branch eq $new_branch} {
unlock_index
return
}
if {$repo_config(gui.trustmtime) eq {true}} {
switch_branch_stage2 {} $new_branch
} else {
set ui_status_value {Refreshing file status...}
set cmd [list git update-index]
lappend cmd -q
lappend cmd --unmerged
lappend cmd --ignore-missing
lappend cmd --refresh
set fd_rf [open "| $cmd" r]
fconfigure $fd_rf -blocking 0 -translation binary
fileevent $fd_rf readable \
[list switch_branch_stage2 $fd_rf $new_branch]
}
}
proc switch_branch_stage2 {fd_rf new_branch} {
global ui_status_value HEAD
if {$fd_rf ne {}} {
read $fd_rf
if {![eof $fd_rf]} return
close $fd_rf
}
set ui_status_value "Updating working directory to '$new_branch'..."
set cmd [list git read-tree]
lappend cmd -m
lappend cmd -u
lappend cmd --exclude-per-directory=.gitignore
lappend cmd $HEAD
lappend cmd $new_branch
set fd_rt [open "| $cmd" r]
fconfigure $fd_rt -blocking 0 -translation binary
fileevent $fd_rt readable \
[list switch_branch_readtree_wait $fd_rt $new_branch]
}
proc switch_branch_readtree_wait {fd_rt new_branch} {
global selected_commit_type commit_type HEAD MERGE_HEAD PARENT
global current_branch
global ui_comm ui_status_value
# -- We never get interesting output on stdout; only stderr.
#
read $fd_rt
fconfigure $fd_rt -blocking 1
if {![eof $fd_rt]} {
fconfigure $fd_rt -blocking 0
return
}
# -- The working directory wasn't in sync with the index and
# we'd have to overwrite something to make the switch. A
# merge is required.
#
if {[catch {close $fd_rt} err]} {
regsub {^fatal: } $err {} err
warn_popup "File level merge required.
$err
Staying on branch '$current_branch'."
set ui_status_value "Aborted checkout of '$new_branch' (file level merging is required)."
unlock_index
return
}
# -- Update the symbolic ref. Core git doesn't even check for failure
# here, it Just Works(tm). If it doesn't we are in some really ugly
# state that is difficult to recover from within git-gui.
#
if {[catch {git symbolic-ref HEAD "refs/heads/$new_branch"} err]} {
error_popup "Failed to set current branch.
This working directory is only partially switched. We successfully updated your files, but failed to update an internal Git file.
This should not have occurred. [appname] will now close and give up.
$err"
do_quit
return
}
# -- Update our repository state. If we were previously in amend mode
# we need to toss the current buffer and do a full rescan to update
# our file lists. If we weren't in amend mode our file lists are
# accurate and we can avoid the rescan.
#
unlock_index
set selected_commit_type new
if {[string match amend* $commit_type]} {
$ui_comm delete 0.0 end
$ui_comm edit reset
$ui_comm edit modified false
rescan {set ui_status_value "Checked out branch '$current_branch'."}
} else {
repository_state commit_type HEAD MERGE_HEAD
set PARENT $HEAD
set ui_status_value "Checked out branch '$current_branch'."
}
}
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