gitk: Make commitdata an array rather than a list

This turns out to be slightly simpler and faster, and will make
things a little easier when we do multiple view support.

Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/gitk b/gitk
index 3b8ecd0..ad2fe3b 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -35,7 +35,6 @@ proc parse_args {rargs} {
 proc start_rev_list {rlargs} {
     global startmsecs nextupdate ncmupdate
     global commfd leftover tclencoding datemode
-    global commitdata
 
     set startmsecs [clock clicks -milliseconds]
     set nextupdate [expr {$startmsecs + 100}]
@@ -53,7 +52,6 @@ proc start_rev_list {rlargs} {
        exit 1
     }
     set leftover {}
-    set commitdata {}
     fconfigure $commfd -blocking 0 -translation lf
     if {$tclencoding != {}} {
        fconfigure $commfd -encoding $tclencoding
@@ -137,8 +135,8 @@ proc getcommitlines {commfd}  {
        set id [lindex $ids 0]
        set olds [lrange $ids 1 end]
        set commitlisted($id) 1
-       updatechildren $id [lrange $ids 1 end]
-       lappend commitdata [string range $cmit [expr {$j + 1}] end]
+       updatechildren $id $olds
+       set commitdata($id) [string range $cmit [expr {$j + 1}] end]
        set commitrow($id) $commitidx
        incr commitidx
        lappend displayorder $id
@@ -266,15 +264,11 @@ proc parsecommit {id contents listed} {
                             $comname $comdate $comment]
 }
 
-proc getcommit {id {row {}}} {
-    global commitdata commitrow commitinfo nparents
+proc getcommit {id} {
+    global commitdata commitinfo nparents
 
-    if {$row eq {}} {
-       if {![info exists commitrow($id)]} {return 0}
-       set row $commitrow($id)
-    }
-    if {$row < [llength $commitdata]} {
-       parsecommit $id [lindex $commitdata $row] 1
+    if {[info exists commitdata($id)]} {
+       parsecommit $id $commitdata($id) 1
     } else {
        readcommit $id
        if {![info exists commitinfo($id)]} {
@@ -1341,7 +1335,6 @@ proc drawcmitrow {row} {
     global displayorder rowidlist
     global idrowranges idrangedrawn iddrawn
     global commitinfo commitlisted parents numcommits
-    global commitdata
 
     if {$row >= $numcommits} return
     foreach id [lindex $rowidlist $row] {
@@ -1369,7 +1362,7 @@ proc drawcmitrow {row} {
        return
     }
     if {![info exists commitinfo($id)]} {
-       getcommit $id $row
+       getcommit $id
     }
     assigncolor $id
     if {[info exists commitlisted($id)] && [info exists parents($id)]
@@ -1723,7 +1716,8 @@ proc dofind {} {
     set didsel 0
     set fldtypes {Headline Author Date Committer CDate Comment}
     set l -1
-    foreach d $commitdata {
+    foreach id $displayorder {
+       set d $commitdata($id)
        incr l
        if {$findtype == "Regexp"} {
            set doesmatch [regexp $foundstring $d]
@@ -1733,9 +1727,8 @@ proc dofind {} {
            set doesmatch [string match $matchstring $d]
        }
        if {!$doesmatch} continue
-       set id [lindex $displayorder $l]
        if {![info exists commitinfo($id)]} {
-           getcommit $id $l
+           getcommit $id
        }
        set info $commitinfo($id)
        set doesmatch 0