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authorPaul Mackerras <paulus@samba.org>2005-07-29 14:23:03 (GMT)
committerPaul Mackerras <paulus@samba.org>2005-07-29 14:23:03 (GMT)
commitc8a4acbf4a7b0f9da3e320877b2b2d12cd58700b (patch)
tree13456d48d88a17ba647acadc0fafe7c4fe5d00e2
parent73b6a6cbda9cd568e2544f2c7dd6c217e369cc37 (diff)
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Improve the merge display when the result differs from all parents.
Now we see if the result is quite similar to one of the parents, and if it is, display the result as a diff from that parent. If the result is similar to more than one parent, pick the one that it's most similar to.
-rwxr-xr-xgitk91
1 files changed, 84 insertions, 7 deletions
diff --git a/gitk b/gitk
index dd8f1f1..2aa970d 100755
--- a/gitk
+++ b/gitk
@@ -2054,7 +2054,6 @@ proc processgroup {} {
set pnum 0
foreach p $parents($id) {
set startline [expr {$grouplinestart + $diffoffset($p)}]
- set offset($p) $diffoffset($p)
set ol $startline
set nl $grouplinestart
if {[info exists grouphunks($p)]} {
@@ -2098,9 +2097,8 @@ proc processgroup {} {
set events [lsort -integer -index 0 $events]
set nevents [llength $events]
set nmerge $nparents($diffmergeid)
- set i 0
set l $grouplinestart
- while {$i < $nevents} {
+ for {set i 0} {$i < $nevents} {set i $j} {
set nl [lindex $events $i 0]
while {$l < $nl} {
$ctext insert end " $filelines($id,$f,$l)\n"
@@ -2129,7 +2127,9 @@ proc processgroup {} {
}
set nlc [expr {$enl - $l}]
set ncol mresult
+ set bestpn -1
if {[llength $active] == $nmerge - 1} {
+ # no diff for one of the parents, i.e. it's identical
for {set pnum 0} {$pnum < $nmerge} {incr pnum} {
if {![info exists delta($pnum)]} {
if {$pnum < $mergemax} {
@@ -2140,11 +2140,25 @@ proc processgroup {} {
break
}
}
+ } elseif {[llength $active] == $nmerge} {
+ # all parents are different, see if one is very similar
+ set bestsim 30
+ for {set pnum 0} {$pnum < $nmerge} {incr pnum} {
+ set sim [similarity $pnum $l $nlc $f \
+ [lrange $events $i [expr {$j-1}]]]
+ if {$sim > $bestsim} {
+ set bestsim $sim
+ set bestpn $pnum
+ }
+ }
+ if {$bestpn >= 0} {
+ lappend ncol m$bestpn
+ }
}
set pnum -1
foreach p $parents($id) {
incr pnum
- if {![info exists delta($pnum)]} continue
+ if {![info exists delta($pnum)] || $pnum == $bestpn} continue
set olc [expr {$nlc + $delta($pnum)}]
set ol [expr {$l + $diffoffset($p)}]
incr diffoffset($p) $delta($pnum)
@@ -2154,11 +2168,35 @@ proc processgroup {} {
incr ol
}
}
- for {} {$nlc > 0} {incr nlc -1} {
+ set endl [expr {$l + $nlc}]
+ if {$bestpn >= 0} {
+ # show this pretty much as a normal diff
+ set p [lindex $parents($id) $bestpn]
+ set ol [expr {$l + $diffoffset($p)}]
+ incr diffoffset($p) $delta($bestpn)
+ unset delta($bestpn)
+ for {set k $i} {$k < $j} {incr k} {
+ set e [lindex $events $k]
+ if {[lindex $e 2] != $bestpn} continue
+ set nl [lindex $e 0]
+ set ol [expr {$ol + $nl - $l}]
+ for {} {$l < $nl} {incr l} {
+ $ctext insert end "+$filelines($id,$f,$l)\n" $ncol
+ }
+ set c [lindex $e 3]
+ for {} {$c > 0} {incr c -1} {
+ $ctext insert end "-$filelines($p,$f,$ol)\n" m$bestpn
+ incr ol
+ }
+ set nl [lindex $e 1]
+ for {} {$l < $nl} {incr l} {
+ $ctext insert end "+$filelines($id,$f,$l)\n" mresult
+ }
+ }
+ }
+ for {} {$l < $endl} {incr l} {
$ctext insert end "+$filelines($id,$f,$l)\n" $ncol
- incr l
}
- set i $j
}
while {$l < $grouplineend} {
$ctext insert end " $filelines($id,$f,$l)\n"
@@ -2167,6 +2205,45 @@ proc processgroup {} {
$ctext conf -state disabled
}
+proc similarity {pnum l nlc f events} {
+ global diffmergeid parents diffoffset filelines
+
+ set id $diffmergeid
+ set p [lindex $parents($id) $pnum]
+ set ol [expr {$l + $diffoffset($p)}]
+ set endl [expr {$l + $nlc}]
+ set same 0
+ set diff 0
+ foreach e $events {
+ if {[lindex $e 2] != $pnum} continue
+ set nl [lindex $e 0]
+ set ol [expr {$ol + $nl - $l}]
+ for {} {$l < $nl} {incr l} {
+ incr same [string length $filelines($id,$f,$l)]
+ incr same
+ }
+ set oc [lindex $e 3]
+ for {} {$oc > 0} {incr oc -1} {
+ incr diff [string length $filelines($p,$f,$ol)]
+ incr diff
+ incr ol
+ }
+ set nl [lindex $e 1]
+ for {} {$l < $nl} {incr l} {
+ incr diff [string length $filelines($id,$f,$l)]
+ incr diff
+ }
+ }
+ for {} {$l < $endl} {incr l} {
+ incr same [string length $filelines($id,$f,$l)]
+ incr same
+ }
+ if {$same == 0} {
+ return 0
+ }
+ return [expr {200 * $same / (2 * $same + $diff)}]
+}
+
proc startdiff {ids} {
global treediffs diffids treepending diffmergeid