Added re-read refs command, and display all refs.

These are features requested by Junio.  Any plain file under .git/refs
whose contents start with 40 hex characters is taken as a reference
and displayed like a head but with a light blue background (unless it
is in .git/refs/tags or .git/refs/heads, in which case it is displayed
as before).  There is now a "Reread references" menu item in the File
menu which re-reads all the plain files under .git/refs and redisplays
any references that have changed.

diff --git a/gitk b/gitk
index 1c6b382..de1c65c 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -281,6 +281,32 @@ proc readrefs {} {
            close $fd
        }
     }
            close $fd
        }
     }

+    readotherrefs refs {} {tags heads}
+}
+
+proc readotherrefs {base dname excl} {
+    global otherrefids idotherrefs
+
+    set git [gitdir]
+    set files [glob -nocomplain -types f [file join $git $base *]]
+    foreach f $files {
+       catch {
+           set fd [open $f r]
+           set line [read $fd 40]
+           if {[regexp {^[0-9a-f]{40}} $line id]} {
+               set name "$dname[file tail $f]"
+               set otherrefids($name) $id
+               lappend idotherrefs($id) $name
+           }
+           close $fd
+       }
+    }
+    set dirs [glob -nocomplain -types d [file join $git $base *]]
+    foreach d $dirs {
+       set dir [file tail $d]
+       if {[lsearch -exact $excl $dir] >= 0} continue
+       readotherrefs [file join $base $dir] "$dname$dir/" {}
+    }

 }
 
 proc error_popup msg {
 }
 
 proc error_popup msg {


@@ -305,6 +331,7 @@ proc makewindow {} {
     menu .bar
     .bar add cascade -label "File" -menu .bar.file
     menu .bar.file
     menu .bar
     .bar add cascade -label "File" -menu .bar.file
     menu .bar.file

+    .bar.file add command -label "Reread references" -command rereadrefs

     .bar.file add command -label "Quit" -command doquit
     menu .bar.help
     .bar add cascade -label "Help" -menu .bar.help
     .bar.file add command -label "Quit" -command doquit
     menu .bar.help
     .bar add cascade -label "Help" -menu .bar.help


@@ -751,7 +778,7 @@ proc drawcommitline {level} {
     global canv canv2 canv3 mainfont namefont canvy linespc
     global lineid linehtag linentag linedtag commitinfo
     global colormap numcommits currentparents dupparents
     global canv canv2 canv3 mainfont namefont canvy linespc
     global lineid linehtag linentag linedtag commitinfo
     global colormap numcommits currentparents dupparents

-    global idtags idline idheads
+    global idtags idline idheads idotherrefs

     global lineno lthickness mainline mainlinearrow sidelines
     global commitlisted rowtextx idpos lastuse displist
     global oldnlines olddlevel olddisplist
     global lineno lthickness mainline mainlinearrow sidelines
     global commitlisted rowtextx idpos lastuse displist
     global oldnlines olddlevel olddisplist


@@ -822,7 +849,8 @@ proc drawcommitline {level} {
     }
     set rowtextx($lineno) $xt
     set idpos($id) [list $x $xt $y1]
     }
     set rowtextx($lineno) $xt
     set idpos($id) [list $x $xt $y1]

-    if {[info exists idtags($id)] || [info exists idheads($id)]} {
+    if {[info exists idtags($id)] || [info exists idheads($id)]
+       || [info exists idotherrefs($id)]} {

        set xt [drawtags $id $x $xt $y1]
     }
     set headline [lindex $commitinfo($id) 0]
        set xt [drawtags $id $x $xt $y1]
     }
     set headline [lindex $commitinfo($id) 0]


@@ -842,18 +870,23 @@ proc drawcommitline {level} {
 }
 
 proc drawtags {id x xt y1} {
 }
 
 proc drawtags {id x xt y1} {

-    global idtags idheads
+    global idtags idheads idotherrefs

     global linespc lthickness
     global canv mainfont
 
     set marks {}
     set ntags 0
     global linespc lthickness
     global canv mainfont
 
     set marks {}
     set ntags 0

+    set nheads 0

     if {[info exists idtags($id)]} {
        set marks $idtags($id)
        set ntags [llength $marks]
     }
     if {[info exists idheads($id)]} {
        set marks [concat $marks $idheads($id)]
     if {[info exists idtags($id)]} {
        set marks $idtags($id)
        set ntags [llength $marks]
     }
     if {[info exists idheads($id)]} {
        set marks [concat $marks $idheads($id)]

+       set nheads [llength $idheads($id)]
+    }
+    if {[info exists idotherrefs($id)]} {
+       set marks [concat $marks $idotherrefs($id)]

     }
     if {$marks eq {}} {
        return $xt
     }
     if {$marks eq {}} {
        return $xt


@@ -882,10 +915,15 @@ proc drawtags {id x xt y1} {
                $xr $yt $xr $yb $xl $yb $x [expr $yb - $delta] \
                -width 1 -outline black -fill yellow -tags tag.$id
        } else {
                $xr $yt $xr $yb $xl $yb $x [expr $yb - $delta] \
                -width 1 -outline black -fill yellow -tags tag.$id
        } else {

-           # draw a head
+           # draw a head or other ref
+           if {[incr nheads -1] >= 0} {
+               set col green
+           } else {
+               set col "#ddddff"
+           }

            set xl [expr $xl - $delta/2]
            $canv create polygon $x $yt $xr $yt $xr $yb $x $yb \
            set xl [expr $xl - $delta/2]
            $canv create polygon $x $yt $xr $yt $xr $yb $x $yb \

-               -width 1 -outline black -fill green -tags tag.$id
+               -width 1 -outline black -fill $col -tags tag.$id

        }
        $canv create text $xl $y1 -anchor w -text $tag \
            -font $mainfont -tags tag.$id
        }
        $canv create text $xl $y1 -anchor w -text $tag \
            -font $mainfont -tags tag.$id


@@ -3307,7 +3345,6 @@ proc mktag {} {
 
 proc domktag {} {
     global mktagtop env tagids idtags
 
 proc domktag {} {
     global mktagtop env tagids idtags

-    global idpos idline linehtag canv selectedline

 
     set id [$mktagtop.sha1 get]
     set tag [$mktagtop.tag get]
 
     set id [$mktagtop.sha1 get]
     set tag [$mktagtop.tag get]


@@ -3332,6 +3369,13 @@ proc domktag {} {
 
     set tagids($tag) $id
     lappend idtags($id) $tag
 
     set tagids($tag) $id
     lappend idtags($id) $tag

+    redrawtags $id
+}
+
+proc redrawtags {id} {
+    global canv linehtag idline idpos selectedline
+
+    if {![info exists idline($id)]} return

     $canv delete tag.$id
     set xt [eval drawtags $id $idpos($id)]
     $canv coords $linehtag($idline($id)) $xt [lindex $idpos($id) 2]
     $canv delete tag.$id
     set xt [eval drawtags $id $idpos($id)]
     $canv coords $linehtag($idline($id)) $xt [lindex $idpos($id) 2]


@@ -3407,6 +3451,49 @@ proc wrcomcan {} {
     unset wrcomtop
 }
 
     unset wrcomtop
 }
 

+proc listrefs {id} {
+    global idtags idheads idotherrefs
+
+    set x {}
+    if {[info exists idtags($id)]} {
+       set x $idtags($id)
+    }
+    set y {}
+    if {[info exists idheads($id)]} {
+       set y $idheads($id)
+    }
+    set z {}
+    if {[info exists idotherrefs($id)]} {
+       set z $idotherrefs($id)
+    }
+    return [list $x $y $z]
+}
+
+proc rereadrefs {} {
+    global idtags idheads idotherrefs
+    global tagids headids otherrefids
+
+    set refids [concat [array names idtags] \
+                   [array names idheads] [array names idotherrefs]]
+    foreach id $refids {
+       if {![info exists ref($id)]} {
+           set ref($id) [listrefs $id]
+       }
+    }
+    foreach v {tagids idtags headids idheads otherrefids idotherrefs} {
+       catch {unset $v}
+    }
+    readrefs
+    set refids [lsort -unique [concat $refids [array names idtags] \
+                       [array names idheads] [array names idotherrefs]]]
+    foreach id $refids {
+       set v [listrefs $id]
+       if {![info exists ref($id)] || $ref($id) != $v} {
+           redrawtags $id
+       }
+    }
+}
+

 proc doquit {} {
     global stopped
     set stopped 100
 proc doquit {} {
     global stopped
     set stopped 100