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-rwxr-xr-xgitk147
1 files changed, 145 insertions, 2 deletions
diff --git a/gitk b/gitk
index 9ff25deb7c..a1eccfc6d2 100755
--- a/gitk
+++ b/gitk
@@ -1088,6 +1088,8 @@ proc makewindow {} {
-command {flist_hl 0}
$flist_menu add command -label [mc "Highlight this only"] \
-command {flist_hl 1}
+ $flist_menu add command -label [mc "External diff"] \
+ -command {external_diff}
}
# Windows sends all mouse wheel events to the current focused window, not
@@ -1192,7 +1194,7 @@ proc savestuff {w} {
global viewname viewfiles viewargs viewargscmd viewperm nextviewnum
global cmitmode wrapcomment datetimeformat limitdiffs
global colors bgcolor fgcolor diffcolors diffcontext selectbgcolor
- global autoselect
+ global autoselect extdifftool
if {$stuffsaved} return
if {![winfo viewable .]} return
@@ -1218,6 +1220,7 @@ proc savestuff {w} {
puts $f [list set diffcolors $diffcolors]
puts $f [list set diffcontext $diffcontext]
puts $f [list set selectbgcolor $selectbgcolor]
+ puts $f [list set extdifftool $extdifftool]
puts $f "set geometry(main) [wm geometry .]"
puts $f "set geometry(topwidth) [winfo width .tf]"
@@ -1768,6 +1771,12 @@ proc pop_flist_menu {w X Y x y} {
set e [lindex $treediffs($diffids) [expr {$l-2}]]
}
set flist_menu_file $e
+ set xdiffstate "normal"
+ if {$cmitmode eq "tree"} {
+ set xdiffstate "disabled"
+ }
+ # Disable "External diff" item in tree mode
+ $flist_menu entryconf 2 -state $xdiffstate
tk_popup $flist_menu $X $Y
}
@@ -1783,6 +1792,113 @@ proc flist_hl {only} {
set gdttype [mc "touching paths:"]
}
+proc save_file_from_commit {filename output what} {
+ global nullfile
+
+ if {[catch {exec git show $filename -- > $output} err]} {
+ if {[string match "fatal: bad revision *" $err]} {
+ return $nullfile
+ }
+ error_popup "Error getting \"$filename\" from $what: $err"
+ return {}
+ }
+ return $output
+}
+
+proc external_diff_get_one_file {diffid filename diffdir} {
+ global nullid nullid2 nullfile
+ global gitdir
+
+ if {$diffid == $nullid} {
+ set difffile [file join [file dirname $gitdir] $filename]
+ if {[file exists $difffile]} {
+ return $difffile
+ }
+ return $nullfile
+ }
+ if {$diffid == $nullid2} {
+ set difffile [file join $diffdir "\[index\] [file tail $filename]"]
+ return [save_file_from_commit :$filename $difffile index]
+ }
+ set difffile [file join $diffdir "\[$diffid\] [file tail $filename]"]
+ return [save_file_from_commit $diffid:$filename $difffile \
+ "revision $diffid"]
+}
+
+proc external_diff {} {
+ global gitktmpdir nullid nullid2
+ global flist_menu_file
+ global diffids
+ global diffnum
+ global gitdir extdifftool
+
+ if {[llength $diffids] == 1} {
+ # no reference commit given
+ set diffidto [lindex $diffids 0]
+ if {$diffidto eq $nullid} {
+ # diffing working copy with index
+ set diffidfrom $nullid2
+ } elseif {$diffidto eq $nullid2} {
+ # diffing index with HEAD
+ set diffidfrom "HEAD"
+ } else {
+ # use first parent commit
+ global parentlist selectedline
+ set diffidfrom [lindex $parentlist $selectedline 0]
+ }
+ } else {
+ set diffidfrom [lindex $diffids 0]
+ set diffidto [lindex $diffids 1]
+ }
+
+ # make sure that several diffs wont collide
+ if {![info exists gitktmpdir]} {
+ set gitktmpdir [file join [file dirname $gitdir] \
+ [format ".gitk-tmp.%s" [pid]]]
+ if {[catch {file mkdir $gitktmpdir} err]} {
+ error_popup "Error creating temporary directory $gitktmpdir: $err"
+ unset gitktmpdir
+ return
+ }
+ set diffnum 0
+ }
+ incr diffnum
+ set diffdir [file join $gitktmpdir $diffnum]
+ if {[catch {file mkdir $diffdir} err]} {
+ error_popup "Error creating temporary directory $diffdir: $err"
+ return
+ }
+
+ # gather files to diff
+ set difffromfile [external_diff_get_one_file $diffidfrom $flist_menu_file $diffdir]
+ set difftofile [external_diff_get_one_file $diffidto $flist_menu_file $diffdir]
+
+ if {$difffromfile ne {} && $difftofile ne {}} {
+ set cmd [concat | [shellsplit $extdifftool] \
+ [list $difffromfile $difftofile]]
+ if {[catch {set fl [open $cmd r]} err]} {
+ file delete -force $diffdir
+ error_popup [mc "$extdifftool: command failed: $err"]
+ } else {
+ fconfigure $fl -blocking 0
+ filerun $fl [list delete_at_eof $fl $diffdir]
+ }
+ }
+}
+
+# delete $dir when we see eof on $f (presumably because the child has exited)
+proc delete_at_eof {f dir} {
+ while {[gets $f line] >= 0} {}
+ if {[eof $f]} {
+ if {[catch {close $f} err]} {
+ error_popup "External diff viewer failed: $err"
+ }
+ file delete -force $dir
+ return 0
+ }
+ return 1
+}
+
# Functions for adding and removing shell-type quoting
proc shellquote {str} {
@@ -7881,9 +7997,15 @@ proc showtag {tag isnew} {
proc doquit {} {
global stopped
+ global gitktmpdir
+
set stopped 100
savestuff .
destroy .
+
+ if {[info exists gitktmpdir]} {
+ catch {file delete -force $gitktmpdir}
+ }
}
proc mkfontdisp {font top which} {
@@ -8012,7 +8134,7 @@ proc doprefs {} {
global maxwidth maxgraphpct
global oldprefs prefstop showneartags showlocalchanges
global bgcolor fgcolor ctext diffcolors selectbgcolor
- global tabstop limitdiffs autoselect
+ global tabstop limitdiffs autoselect extdifftool
set top .gitkprefs
set prefstop $top
@@ -8064,6 +8186,15 @@ proc doprefs {} {
pack $top.ldiff.b $top.ldiff.l -side left
grid x $top.ldiff -sticky w
+ entry $top.extdifft -textvariable extdifftool
+ frame $top.extdifff
+ label $top.extdifff.l -text [mc "External diff tool" ] -font optionfont \
+ -padx 10
+ button $top.extdifff.b -text [mc "Choose..."] -font optionfont \
+ -command choose_extdiff
+ pack $top.extdifff.l $top.extdifff.b -side left
+ grid x $top.extdifff $top.extdifft -sticky w
+
label $top.cdisp -text [mc "Colors: press to choose"]
grid $top.cdisp - -sticky w -pady 10
label $top.bg -padx 40 -relief sunk -background $bgcolor
@@ -8111,6 +8242,15 @@ proc doprefs {} {
bind $top <Visibility> "focus $top.buts.ok"
}
+proc choose_extdiff {} {
+ global extdifftool
+
+ set prog [tk_getOpenFile -title "External diff tool" -multiple false]
+ if {$prog ne {}} {
+ set extdifftool $prog
+ }
+}
+
proc choosecolor {v vi w x cmd} {
global $v
@@ -8539,6 +8679,8 @@ set limitdiffs 1
set datetimeformat "%Y-%m-%d %H:%M:%S"
set autoselect 1
+set extdifftool "meld"
+
set colors {green red blue magenta darkgrey brown orange}
set bgcolor white
set fgcolor black
@@ -8685,6 +8827,7 @@ if {$mergeonly} {
set nullid "0000000000000000000000000000000000000000"
set nullid2 "0000000000000000000000000000000000000001"
+set nullfile "/dev/null"
set have_tk85 [expr {[package vcompare $tk_version "8.5"] >= 0}]