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git-gui.sh
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git-gui.sh
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#!/bin/sh
# Tcl ignores the next line -*- tcl -*- \
if test "z$*" = zversion \
|| test "z$*" = z--version; \
then \
echo 'git-gui version @@GITGUI_VERSION@@'; \
exit; \
fi; \
exec wish "$0" -- "$@"
set appvers {@@GITGUI_VERSION@@}
set copyright {
Copyright © 2006, 2007 Shawn Pearce, et. al.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA}
######################################################################
##
## Tcl/Tk sanity check
if {[catch {package require Tcl 8.4} err]
|| [catch {package require Tk 8.4} err]
} {
catch {wm withdraw .}
tk_messageBox \
-icon error \
-type ok \
-title "git-gui: fatal error" \
-message $err
exit 1
}
catch {rename send {}} ; # What an evil concept...
######################################################################
##
## enable verbose loading?
if {![catch {set _verbose $env(GITGUI_VERBOSE)}]} {
unset _verbose
rename auto_load real__auto_load
proc auto_load {name args} {
puts stderr "auto_load $name"
return [uplevel 1 real__auto_load $name $args]
}
rename source real__source
proc source {name} {
puts stderr "source $name"
uplevel 1 real__source $name
}
}
######################################################################
##
## Fake internationalization to ease backporting of changes.
proc mc {fmt args} {
set cmk [string first @@ $fmt]
if {$cmk > 0} {
set fmt [string range $fmt 0 [expr {$cmk - 1}]]
}
return [eval [list format $fmt] $args]
}
######################################################################
##
## read only globals
set _appname [lindex [file split $argv0] end]
set _gitdir {}
set _gitexec {}
set _reponame {}
set _iscygwin {}
set _search_path {}
proc appname {} {
global _appname
return $_appname
}
proc gitdir {args} {
global _gitdir
if {$args eq {}} {
return $_gitdir
}
return [eval [list file join $_gitdir] $args]
}
proc gitexec {args} {
global _gitexec
if {$_gitexec eq {}} {
if {[catch {set _gitexec [git --exec-path]} err]} {
error "Git not installed?\n\n$err"
}
if {[is_Cygwin]} {
set _gitexec [exec cygpath \
--windows \
--absolute \
$_gitexec]
} else {
set _gitexec [file normalize $_gitexec]
}
}
if {$args eq {}} {
return $_gitexec
}
return [eval [list file join $_gitexec] $args]
}
proc reponame {} {
return $::_reponame
}
proc is_MacOSX {} {
if {[tk windowingsystem] eq {aqua}} {
return 1
}
return 0
}
proc is_Windows {} {
if {$::tcl_platform(platform) eq {windows}} {
return 1
}
return 0
}
proc is_Cygwin {} {
global _iscygwin
if {$_iscygwin eq {}} {
if {$::tcl_platform(platform) eq {windows}} {
if {[catch {set p [exec cygpath --windir]} err]} {
set _iscygwin 0
} else {
set _iscygwin 1
}
} else {
set _iscygwin 0
}
}
return $_iscygwin
}
proc is_enabled {option} {
global enabled_options
if {[catch {set on $enabled_options($option)}]} {return 0}
return $on
}
proc enable_option {option} {
global enabled_options
set enabled_options($option) 1
}
proc disable_option {option} {
global enabled_options
set enabled_options($option) 0
}
######################################################################
##
## config
proc is_many_config {name} {
switch -glob -- $name {
remote.*.fetch -
remote.*.push
{return 1}
*
{return 0}
}
}
proc is_config_true {name} {
global repo_config
if {[catch {set v $repo_config($name)}]} {
return 0
} elseif {$v eq {true} || $v eq {1} || $v eq {yes}} {
return 1
} else {
return 0
}
}
proc get_config {name} {
global repo_config
if {[catch {set v $repo_config($name)}]} {
return {}
} else {
return $v
}
}
proc load_config {include_global} {
global repo_config global_config default_config
array unset global_config
if {$include_global} {
catch {
set fd_rc [git_read config --global --list]
while {[gets $fd_rc line] >= 0} {
if {[regexp {^([^=]+)=(.*)$} $line line name value]} {
if {[is_many_config $name]} {
lappend global_config($name) $value
} else {
set global_config($name) $value
}
}
}
close $fd_rc
}
}
array unset repo_config
catch {
set fd_rc [git_read config --list]
while {[gets $fd_rc line] >= 0} {
if {[regexp {^([^=]+)=(.*)$} $line line name value]} {
if {[is_many_config $name]} {
lappend repo_config($name) $value
} else {
set repo_config($name) $value
}
}
}
close $fd_rc
}
foreach name [array names default_config] {
if {[catch {set v $global_config($name)}]} {
set global_config($name) $default_config($name)
}
if {[catch {set v $repo_config($name)}]} {
set repo_config($name) $default_config($name)
}
}
}
######################################################################
##
## handy utils
proc _git_cmd {name} {
global _git_cmd_path
if {[catch {set v $_git_cmd_path($name)}]} {
switch -- $name {
version -
--version -
--exec-path { return [list $::_git $name] }
}
set p [gitexec git-$name$::_search_exe]
if {[file exists $p]} {
set v [list $p]
} elseif {[is_Windows] && [file exists [gitexec git-$name]]} {
# Try to determine what sort of magic will make
# git-$name go and do its thing, because native
# Tcl on Windows doesn't know it.
#
set p [gitexec git-$name]
set f [open $p r]
set s [gets $f]
close $f
switch -glob -- [lindex $s 0] {
#!*sh { set i sh }
#!*perl { set i perl }
#!*python { set i python }
default { error "git-$name is not supported: $s" }
}
upvar #0 _$i interp
if {![info exists interp]} {
set interp [_which $i]
}
if {$interp eq {}} {
error "git-$name requires $i (not in PATH)"
}
set v [concat [list $interp] [lrange $s 1 end] [list $p]]
} else {
# Assume it is builtin to git somehow and we
# aren't actually able to see a file for it.
#
set v [list $::_git $name]
}
set _git_cmd_path($name) $v
}
return $v
}
proc _which {what} {
global env _search_exe _search_path
if {$_search_path eq {}} {
if {[is_Cygwin]} {
set _search_path [split [exec cygpath \
--windows \
--path \
--absolute \
$env(PATH)] {;}]
set _search_exe .exe
} elseif {[is_Windows]} {
set _search_path [split $env(PATH) {;}]
set _search_exe .exe
} else {
set _search_path [split $env(PATH) :]
set _search_exe {}
}
}
foreach p $_search_path {
set p [file join $p $what$_search_exe]
if {[file exists $p]} {
return [file normalize $p]
}
}
return {}
}
proc _lappend_nice {cmd_var} {
global _nice
upvar $cmd_var cmd
if {![info exists _nice]} {
set _nice [_which nice]
}
if {$_nice ne {}} {
lappend cmd $_nice
}
}
proc git {args} {
set opt [list exec]
while {1} {
switch -- [lindex $args 0] {
--nice {
_lappend_nice opt
}
default {
break
}
}
set args [lrange $args 1 end]
}
set cmdp [_git_cmd [lindex $args 0]]
set args [lrange $args 1 end]
return [eval $opt $cmdp $args]
}
proc _open_stdout_stderr {cmd} {
if {[catch {
set fd [open $cmd r]
} err]} {
if { [lindex $cmd end] eq {2>@1}
&& $err eq {can not find channel named "1"}
} {
# Older versions of Tcl 8.4 don't have this 2>@1 IO
# redirect operator. Fallback to |& cat for those.
# The command was not actually started, so its safe
# to try to start it a second time.
#
set fd [open [concat \
[lrange $cmd 0 end-1] \
[list |& cat] \
] r]
} else {
error $err
}
}
fconfigure $fd -eofchar {}
return $fd
}
proc git_read {args} {
set opt [list |]
while {1} {
switch -- [lindex $args 0] {
--nice {
_lappend_nice opt
}
--stderr {
lappend args 2>@1
}
default {
break
}
}
set args [lrange $args 1 end]
}
set cmdp [_git_cmd [lindex $args 0]]
set args [lrange $args 1 end]
return [_open_stdout_stderr [concat $opt $cmdp $args]]
}
proc git_write {args} {
set opt [list |]
while {1} {
switch -- [lindex $args 0] {
--nice {
_lappend_nice opt
}
default {
break
}
}
set args [lrange $args 1 end]
}
set cmdp [_git_cmd [lindex $args 0]]
set args [lrange $args 1 end]
return [open [concat $opt $cmdp $args] w]
}
proc sq {value} {
regsub -all ' $value "'\\''" value
return "'$value'"
}
proc load_current_branch {} {
global current_branch is_detached
set fd [open [gitdir HEAD] r]
if {[gets $fd ref] < 1} {
set ref {}
}
close $fd
set pfx {ref: refs/heads/}
set len [string length $pfx]
if {[string equal -length $len $pfx $ref]} {
# We're on a branch. It might not exist. But
# HEAD looks good enough to be a branch.
#
set current_branch [string range $ref $len end]
set is_detached 0
} else {
# Assume this is a detached head.
#
set current_branch HEAD
set is_detached 1
}
}
auto_load tk_optionMenu
rename tk_optionMenu real__tkOptionMenu
proc tk_optionMenu {w varName args} {
set m [eval real__tkOptionMenu $w $varName $args]
$m configure -font font_ui
$w configure -font font_ui
return $m
}
proc rmsel_tag {text} {
$text tag conf sel \
-background [$text cget -background] \
-foreground [$text cget -foreground] \
-borderwidth 0
$text tag conf in_sel -background lightgray
bind $text <Motion> break
return $text
}
######################################################################
##
## find git
set _git [_which git]
if {$_git eq {}} {
catch {wm withdraw .}
error_popup "Cannot find git in PATH."
exit 1
}
######################################################################
##
## version check
if {[catch {set _git_version [git --version]} err]} {
catch {wm withdraw .}
tk_messageBox \
-icon error \
-type ok \
-title "git-gui: fatal error" \
-message "Cannot determine Git version:
$err
[appname] requires Git 1.5.0 or later."
exit 1
}
if {![regsub {^git version } $_git_version {} _git_version]} {
catch {wm withdraw .}
tk_messageBox \
-icon error \
-type ok \
-title "git-gui: fatal error" \
-message "Cannot parse Git version string:\n\n$_git_version"
exit 1
}
set _real_git_version $_git_version
regsub -- {-dirty$} $_git_version {} _git_version
regsub {\.[0-9]+\.g[0-9a-f]+$} $_git_version {} _git_version
regsub {\.rc[0-9]+$} $_git_version {} _git_version
regsub {\.GIT$} $_git_version {} _git_version
if {![regexp {^[1-9]+(\.[0-9]+)+$} $_git_version]} {
catch {wm withdraw .}
if {[tk_messageBox \
-icon warning \
-type yesno \
-default no \
-title "[appname]: warning" \
-message "Git version cannot be determined.
$_git claims it is version '$_real_git_version'.
[appname] requires at least Git 1.5.0 or later.
Assume '$_real_git_version' is version 1.5.0?
"] eq {yes}} {
set _git_version 1.5.0
} else {
exit 1
}
}
unset _real_git_version
proc git-version {args} {
global _git_version
switch [llength $args] {
0 {
return $_git_version
}
2 {
set op [lindex $args 0]
set vr [lindex $args 1]
set cm [package vcompare $_git_version $vr]
return [expr $cm $op 0]
}
4 {
set type [lindex $args 0]
set name [lindex $args 1]
set parm [lindex $args 2]
set body [lindex $args 3]
if {($type ne {proc} && $type ne {method})} {
error "Invalid arguments to git-version"
}
if {[llength $body] < 2 || [lindex $body end-1] ne {default}} {
error "Last arm of $type $name must be default"
}
foreach {op vr cb} [lrange $body 0 end-2] {
if {[git-version $op $vr]} {
return [uplevel [list $type $name $parm $cb]]
}
}
return [uplevel [list $type $name $parm [lindex $body end]]]
}
default {
error "git-version >= x"
}
}
}
if {[git-version < 1.5]} {
catch {wm withdraw .}
tk_messageBox \
-icon error \
-type ok \
-title "git-gui: fatal error" \
-message "[appname] requires Git 1.5.0 or later.
You are using [git-version]:
[git --version]"
exit 1
}
######################################################################
##
## configure our library
set oguilib {@@GITGUI_LIBDIR@@}
set oguirel {@@GITGUI_RELATIVE@@}
if {$oguirel eq {1}} {
set oguilib [file dirname [file dirname [file normalize $argv0]]]
set oguilib [file join $oguilib share git-gui lib]
} elseif {[string match @@* $oguirel]} {
set oguilib [file join [file dirname [file normalize $argv0]] lib]
}
set idx [file join $oguilib tclIndex]
if {[catch {set fd [open $idx r]} err]} {
catch {wm withdraw .}
tk_messageBox \
-icon error \
-type ok \
-title "git-gui: fatal error" \
-message $err
exit 1
}
if {[gets $fd] eq {# Autogenerated by git-gui Makefile}} {
set idx [list]
while {[gets $fd n] >= 0} {
if {$n ne {} && ![string match #* $n]} {
lappend idx $n
}
}
} else {
set idx {}
}
close $fd
if {$idx ne {}} {
set loaded [list]
foreach p $idx {
if {[lsearch -exact $loaded $p] >= 0} continue
source [file join $oguilib $p]
lappend loaded $p
}
unset loaded p
} else {
set auto_path [concat [list $oguilib] $auto_path]
}
unset -nocomplain oguirel idx fd
######################################################################
##
## feature option selection
if {[regexp {^git-(.+)$} [appname] _junk subcommand]} {
unset _junk
} else {
set subcommand gui
}
if {$subcommand eq {gui.sh}} {
set subcommand gui
}
if {$subcommand eq {gui} && [llength $argv] > 0} {
set subcommand [lindex $argv 0]
set argv [lrange $argv 1 end]
}
enable_option multicommit
enable_option branch
enable_option transport
disable_option bare
switch -- $subcommand {
browser -
blame {
enable_option bare
disable_option multicommit
disable_option branch
disable_option transport
}
citool {
enable_option singlecommit
disable_option multicommit
disable_option branch
disable_option transport
}
}
######################################################################
##
## repository setup
if {[catch {
set _gitdir $env(GIT_DIR)
set _prefix {}
}]
&& [catch {
set _gitdir [git rev-parse --git-dir]
set _prefix [git rev-parse --show-prefix]
} err]} {
catch {wm withdraw .}
error_popup "Cannot find the git directory:\n\n$err"
exit 1
}
if {![file isdirectory $_gitdir] && [is_Cygwin]} {
catch {set _gitdir [exec cygpath --unix $_gitdir]}
}
if {![file isdirectory $_gitdir]} {
catch {wm withdraw .}
error_popup "Git directory not found:\n\n$_gitdir"
exit 1
}
if {$_prefix ne {}} {
regsub -all {[^/]+/} $_prefix ../ cdup
if {[catch {cd $cdup} err]} {
catch {wm withdraw .}
error_popup "Cannot move to top of working directory:\n\n$err"
exit 1
}
unset cdup
} elseif {![is_enabled bare]} {
if {[lindex [file split $_gitdir] end] ne {.git}} {
catch {wm withdraw .}
error_popup "Cannot use funny .git directory:\n\n$_gitdir"
exit 1
}
if {[catch {cd [file dirname $_gitdir]} err]} {
catch {wm withdraw .}
error_popup "No working directory [file dirname $_gitdir]:\n\n$err"
exit 1
}
}
set _reponame [file split [file normalize $_gitdir]]
if {[lindex $_reponame end] eq {.git}} {
set _reponame [lindex $_reponame end-1]
} else {
set _reponame [lindex $_reponame end]
}
######################################################################
##
## global init
set current_diff_path {}
set current_diff_side {}
set diff_actions [list]
set HEAD {}
set PARENT {}
set MERGE_HEAD [list]
set commit_type {}
set empty_tree {}
set current_branch {}
set is_detached 0
set current_diff_path {}
set is_3way_diff 0
set selected_commit_type new
######################################################################
##
## task management
set rescan_active 0
set diff_active 0
set last_clicked {}
set disable_on_lock [list]
set index_lock_type none
proc lock_index {type} {
global index_lock_type disable_on_lock
if {$index_lock_type eq {none}} {
set index_lock_type $type
foreach w $disable_on_lock {
uplevel #0 $w disabled
}
return 1
} elseif {$index_lock_type eq "begin-$type"} {
set index_lock_type $type
return 1
}
return 0
}
proc unlock_index {} {
global index_lock_type disable_on_lock
set index_lock_type none
foreach w $disable_on_lock {
uplevel #0 $w normal
}
}
######################################################################
##
## status
proc repository_state {ctvar hdvar mhvar} {
global current_branch
upvar $ctvar ct $hdvar hd $mhvar mh
set mh [list]
load_current_branch
if {[catch {set hd [git rev-parse --verify HEAD]}]} {
set hd {}
set ct initial
return
}
set merge_head [gitdir MERGE_HEAD]
if {[file exists $merge_head]} {
set ct merge
set fd_mh [open $merge_head r]
while {[gets $fd_mh line] >= 0} {
lappend mh $line
}
close $fd_mh
return
}
set ct normal
}
proc PARENT {} {
global PARENT empty_tree
set p [lindex $PARENT 0]
if {$p ne {}} {
return $p
}
if {$empty_tree eq {}} {
set empty_tree [git mktree << {}]
}
return $empty_tree
}
proc rescan {after {honor_trustmtime 1}} {
global HEAD PARENT MERGE_HEAD commit_type
global ui_index ui_workdir ui_comm
global rescan_active file_states
global repo_config
if {$rescan_active > 0 || ![lock_index read]} return
repository_state newType newHEAD newMERGE_HEAD
if {[string match amend* $commit_type]
&& $newType eq {normal}
&& $newHEAD eq $HEAD} {
} else {
set HEAD $newHEAD
set PARENT $newHEAD
set MERGE_HEAD $newMERGE_HEAD
set commit_type $newType
}
array unset file_states
if {!$::GITGUI_BCK_exists &&
(![$ui_comm edit modified]
|| [string trim [$ui_comm get 0.0 end]] eq {})} {
if {[string match amend* $commit_type]} {
} elseif {[load_message GITGUI_MSG]} {
} elseif {[load_message MERGE_MSG]} {
} elseif {[load_message SQUASH_MSG]} {
}
$ui_comm edit reset
$ui_comm edit modified false
}
if {$honor_trustmtime && $repo_config(gui.trustmtime) eq {true}} {
rescan_stage2 {} $after
} else {
set rescan_active 1
ui_status {Refreshing file status...}
set fd_rf [git_read update-index \
-q \
--unmerged \
--ignore-missing \
--refresh \
]
fconfigure $fd_rf -blocking 0 -translation binary
fileevent $fd_rf readable \
[list rescan_stage2 $fd_rf $after]
}
}
proc rescan_stage2 {fd after} {
global rescan_active buf_rdi buf_rdf buf_rlo
if {$fd ne {}} {
read $fd
if {![eof $fd]} return
close $fd
}
set ls_others [list --exclude-per-directory=.gitignore]
set info_exclude [gitdir info exclude]
if {[file readable $info_exclude]} {
lappend ls_others "--exclude-from=$info_exclude"
}
set user_exclude [get_config core.excludesfile]
if {$user_exclude ne {} && [file readable $user_exclude]} {
lappend ls_others "--exclude-from=$user_exclude"
}
set buf_rdi {}
set buf_rdf {}
set buf_rlo {}
set rescan_active 3
ui_status {Scanning for modified files ...}
set fd_di [git_read diff-index --cached -z [PARENT]]
set fd_df [git_read diff-files -z]
set fd_lo [eval git_read ls-files --others -z $ls_others]
fconfigure $fd_di -blocking 0 -translation binary -encoding binary
fconfigure $fd_df -blocking 0 -translation binary -encoding binary
fconfigure $fd_lo -blocking 0 -translation binary -encoding binary
fileevent $fd_di readable [list read_diff_index $fd_di $after]
fileevent $fd_df readable [list read_diff_files $fd_df $after]
fileevent $fd_lo readable [list read_ls_others $fd_lo $after]
}
proc load_message {file} {
global ui_comm
set f [gitdir $file]
if {[file isfile $f]} {
if {[catch {set fd [open $f r]}]} {
return 0
}
fconfigure $fd -eofchar {}
set content [string trim [read $fd]]
close $fd
regsub -all -line {[ \r\t]+$} $content {} content
$ui_comm delete 0.0 end
$ui_comm insert end $content
return 1
}
return 0
}
proc read_diff_index {fd after} {
global buf_rdi
append buf_rdi [read $fd]
set c 0
set n [string length $buf_rdi]
while {$c < $n} {
set z1 [string first "\0" $buf_rdi $c]
if {$z1 == -1} break
incr z1
set z2 [string first "\0" $buf_rdi $z1]
if {$z2 == -1} break
incr c
set i [split [string range $buf_rdi $c [expr {$z1 - 2}]] { }]
set p [string range $buf_rdi $z1 [expr {$z2 - 1}]]
merge_state \
[encoding convertfrom $p] \
[lindex $i 4]? \
[list [lindex $i 0] [lindex $i 2]] \
[list]
set c $z2
incr c
}
if {$c < $n} {
set buf_rdi [string range $buf_rdi $c end]
} else {
set buf_rdi {}
}
rescan_done $fd buf_rdi $after
}
proc read_diff_files {fd after} {
global buf_rdf
append buf_rdf [read $fd]
set c 0
set n [string length $buf_rdf]