git/gitk

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#!/bin/sh
# Tcl ignores the next line -*- tcl -*- \
exec wish "$0" -- "${1+$@}"
# Copyright (C) 2005 Paul Mackerras. All rights reserved.
# This program is free software; it may be used, copied, modified
# and distributed under the terms of the GNU General Public Licence,
# either version 2, or (at your option) any later version.
# CVS $Revision: 1.6 $
set datemode 0
set boldnames 0
set revtreeargs {}
set diffopts "-U 5 -p"
set mainfont {Helvetica 9}
set namefont $mainfont
set textfont {Courier 9}
if {$boldnames} {
lappend namefont bold
}
set colors {green red blue magenta darkgrey brown orange}
set colorbycommitter false
catch {source ~/.gitk}
foreach arg $argv {
switch -regexp -- $arg {
"^$" { }
"^-b" { set boldnames 1 }
"^-c" { set colorbycommitter 1 }
"^-d" { set datemode 1 }
"^-.*" {
puts stderr "unrecognized option $arg"
exit 1
}
default {
lappend revtreeargs $arg
}
}
}
proc getcommits {rargs} {
global commits parents cdate nparents children nchildren
if {$rargs == {}} {
set rargs HEAD
}
set commits {}
foreach c [split [eval exec git-rev-tree $rargs] "\n"] {
set i 0
set cid {}
foreach f $c {
if {$i == 0} {
set d $f
} else {
set id [lindex [split $f :] 0]
if {![info exists nchildren($id)]} {
set children($id) {}
set nchildren($id) 0
}
if {$i == 1} {
set cid $id
lappend commits $id
set parents($id) {}
set cdate($id) $d
set nparents($id) 0
} else {
lappend parents($cid) $id
incr nparents($cid)
incr nchildren($id)
lappend children($id) $cid
}
}
incr i
}
}
}
proc readcommit {id} {
global commitinfo
set inhdr 1
set comment {}
set headline {}
set auname {}
set audate {}
set comname {}
set comdate {}
foreach line [split [exec git-cat-file commit $id] "\n"] {
if {$inhdr} {
if {$line == {}} {
set inhdr 0
} else {
set tag [lindex $line 0]
if {$tag == "author"} {
set x [expr {[llength $line] - 2}]
set audate [lindex $line $x]
set auname [lrange $line 1 [expr {$x - 1}]]
} elseif {$tag == "committer"} {
set x [expr {[llength $line] - 2}]
set comdate [lindex $line $x]
set comname [lrange $line 1 [expr {$x - 1}]]
}
}
} else {
if {$comment == {}} {
set headline $line
} else {
append comment "\n"
}
append comment $line
}
}
if {$audate != {}} {
set audate [clock format $audate -format "%Y-%m-%d %H:%M:%S"]
}
if {$comdate != {}} {
set comdate [clock format $comdate -format "%Y-%m-%d %H:%M:%S"]
}
set commitinfo($id) [list $headline $auname $audate \
$comname $comdate $comment]
}
proc makewindow {} {
global canv canv2 canv3 linespc charspc ctext cflist textfont
panedwindow .ctop -orient vertical
panedwindow .ctop.clist -orient horizontal -sashpad 0 -handlesize 4
.ctop add .ctop.clist
set canv .ctop.clist.canv
set cscroll .ctop.clist.dates.csb
set height [expr 25 * $linespc + 4]
canvas $canv -height $height -width [expr 45 * $charspc] \
-bg white -bd 0 \
-yscrollincr $linespc -yscrollcommand "$cscroll set"
.ctop.clist add $canv
set canv2 .ctop.clist.canv2
canvas $canv2 -height $height -width [expr 30 * $charspc] \
-bg white -bd 0 -yscrollincr $linespc
.ctop.clist add $canv2
frame .ctop.clist.dates
.ctop.clist add .ctop.clist.dates
set canv3 .ctop.clist.dates.canv3
canvas $canv3 -height $height -width [expr 15 * $charspc] \
-bg white -bd 0 -yscrollincr $linespc
scrollbar $cscroll -command {allcanvs yview} -highlightthickness 0
pack .ctop.clist.dates.csb -side right -fill y
pack $canv3 -side left -fill both -expand 1
panedwindow .ctop.cdet -orient horizontal
.ctop add .ctop.cdet
frame .ctop.cdet.left
set ctext .ctop.cdet.left.ctext
text $ctext -bg white -state disabled -font $textfont -height 32 \
-yscrollcommand ".ctop.cdet.left.sb set"
scrollbar .ctop.cdet.left.sb -command "$ctext yview"
pack .ctop.cdet.left.sb -side right -fill y
pack $ctext -side left -fill both -expand 1
.ctop.cdet add .ctop.cdet.left
$ctext tag conf filesep -font [concat $textfont bold]
$ctext tag conf hunksep -back blue -fore white
$ctext tag conf d0 -back "#ff8080"
$ctext tag conf d1 -back green
frame .ctop.cdet.right
set cflist .ctop.cdet.right.cfiles
listbox $cflist -width 30 -bg white -selectmode extended \
-yscrollcommand ".ctop.cdet.right.sb set"
scrollbar .ctop.cdet.right.sb -command "$cflist yview"
pack .ctop.cdet.right.sb -side right -fill y
pack $cflist -side left -fill both -expand 1
.ctop.cdet add .ctop.cdet.right
pack .ctop -side top -fill both -expand 1
bindall <1> {selcanvline %x %y}
bindall <B1-Motion> {selcanvline %x %y}
bindall <ButtonRelease-4> "allcanvs yview scroll -5 u"
bindall <ButtonRelease-5> "allcanvs yview scroll 5 u"
bindall <2> "allcanvs scan mark 0 %y"
bindall <B2-Motion> "allcanvs scan dragto 0 %y"
bind . <Key-Up> "selnextline -1"
bind . <Key-Down> "selnextline 1"
bind . p "selnextline -1"
bind . n "selnextline 1"
bind . <Key-Prior> "allcanvs yview scroll -1 p"
bind . <Key-Next> "allcanvs yview scroll 1 p"
bind . <Key-Delete> "$ctext yview scroll -1 p"
bind . <Key-BackSpace> "$ctext yview scroll -1 p"
bind . <Key-space> "$ctext yview scroll 1 p"
bind . b "$ctext yview scroll -1 p"
bind . d "$ctext yview scroll 18 u"
bind . u "$ctext yview scroll -18 u"
bind . Q "set stopped 1; destroy ."
bind $cflist <<ListboxSelect>> listboxsel
}
proc allcanvs args {
global canv canv2 canv3
eval $canv $args
eval $canv2 $args
eval $canv3 $args
}
proc bindall {event action} {
global canv canv2 canv3
bind $canv $event $action
bind $canv2 $event $action
bind $canv3 $event $action
}
proc truncatetofit {str width font} {
if {[font measure $font $str] <= $width} {
return $str
}
set best 0
set bad [string length $str]
set tmp $str
while {$best < $bad - 1} {
set try [expr {int(($best + $bad) / 2)}]
set tmp "[string range $str 0 [expr $try-1]]..."
if {[font measure $font $tmp] <= $width} {
set best $try
} else {
set bad $try
}
}
return $tmp
}
proc assigncolor {id} {
global commitinfo colormap commcolors colors nextcolor
global colorbycommitter
global parents nparents children nchildren
if [info exists colormap($id)] return
set ncolors [llength $colors]
if {$colorbycommitter} {
if {![info exists commitinfo($id)]} {
readcommit $id
}
set comm [lindex $commitinfo($id) 3]
if {![info exists commcolors($comm)]} {
set commcolors($comm) [lindex $colors $nextcolor]
if {[incr nextcolor] >= $ncolors} {
set nextcolor 0
}
}
set colormap($id) $commcolors($comm)
} else {
if {$nparents($id) == 1 && $nchildren($id) == 1} {
set child [lindex $children($id) 0]
if {[info exists colormap($child)]
&& $nparents($child) == 1} {
set colormap($id) $colormap($child)
return
}
}
set badcolors {}
foreach child $children($id) {
if {[info exists colormap($child)]
&& [lsearch -exact $badcolors $colormap($child)] < 0} {
lappend badcolors $colormap($child)
}
if {[info exists parents($child)]} {
foreach p $parents($child) {
if {[info exists colormap($p)]
&& [lsearch -exact $badcolors $colormap($p)] < 0} {
lappend badcolors $colormap($p)
}
}
}
}
if {[llength $badcolors] >= $ncolors} {
set badcolors {}
}
for {set i 0} {$i <= $ncolors} {incr i} {
set c [lindex $colors $nextcolor]
if {[incr nextcolor] >= $ncolors} {
set nextcolor 0
}
if {[lsearch -exact $badcolors $c]} break
}
set colormap($id) $c
}
}
proc drawgraph {start} {
global parents children nparents nchildren commits
global canv canv2 canv3 mainfont namefont canvx0 canvy0 canvy linespc
global datemode cdate
global lineid linehtag linentag linedtag commitinfo
global nextcolor colormap
set nextcolor 0
assigncolor $start
foreach id $commits {
set ncleft($id) $nchildren($id)
}
set todo [list $start]
set level 0
set y2 $canvy0
set linestarty(0) $canvy0
set nullentry -1
set lineno -1
while 1 {
set canvy $y2
allcanvs conf -scrollregion [list 0 0 0 $canvy]
update
incr lineno
set nlines [llength $todo]
set id [lindex $todo $level]
set lineid($lineno) $id
set actualparents {}
foreach p $parents($id) {
if {[info exists ncleft($p)]} {
incr ncleft($p) -1
lappend actualparents $p
}
}
if {![info exists commitinfo($id)]} {
readcommit $id
}
set x [expr $canvx0 + $level * $linespc]
set y2 [expr $canvy + $linespc]
if {$linestarty($level) < $canvy} {
set t [$canv create line $x $linestarty($level) $x $canvy \
-width 2 -fill $colormap($id)]
$canv lower $t
set linestarty($level) $canvy
}
set t [$canv create oval [expr $x - 4] [expr $canvy - 4] \
[expr $x + 3] [expr $canvy + 3] \
-fill blue -outline black -width 1]
$canv raise $t
set xt [expr $canvx0 + $nlines * $linespc]
set headline [lindex $commitinfo($id) 0]
set name [lindex $commitinfo($id) 1]
set date [lindex $commitinfo($id) 2]
set linehtag($lineno) [$canv create text $xt $canvy -anchor w \
-text $headline -font $mainfont ]
set linentag($lineno) [$canv2 create text 3 $canvy -anchor w \
-text $name -font $namefont]
set linedtag($lineno) [$canv3 create text 3 $canvy -anchor w \
-text $date -font $mainfont]
if {!$datemode && [llength $actualparents] == 1} {
set p [lindex $actualparents 0]
if {$ncleft($p) == 0 && [lsearch -exact $todo $p] < 0} {
assigncolor $p
set todo [lreplace $todo $level $level $p]
continue
}
}
set oldtodo $todo
set oldlevel $level
set lines {}
for {set i 0} {$i < $nlines} {incr i} {
if {[lindex $todo $i] == {}} continue
set oldstarty($i) $linestarty($i)
if {$i != $level} {
lappend lines [list $i [lindex $todo $i]]
}
}
unset linestarty
if {$nullentry >= 0} {
set todo [lreplace $todo $nullentry $nullentry]
if {$nullentry < $level} {
incr level -1
}
}
set todo [lreplace $todo $level $level]
if {$nullentry > $level} {
incr nullentry -1
}
set i $level
foreach p $actualparents {
set k [lsearch -exact $todo $p]
if {$k < 0} {
assigncolor $p
set todo [linsert $todo $i $p]
if {$nullentry >= $i} {
incr nullentry
}
}
lappend lines [list $oldlevel $p]
}
# choose which one to do next time around
set todol [llength $todo]
set level -1
set latest {}
for {set k $todol} {[incr k -1] >= 0} {} {
set p [lindex $todo $k]
if {$p == {}} continue
if {$ncleft($p) == 0} {
if {$datemode} {
if {$latest == {} || $cdate($p) > $latest} {
set level $k
set latest $cdate($p)
}
} else {
set level $k
break
}
}
}
if {$level < 0} {
if {$todo != {}} {
puts "ERROR: none of the pending commits can be done yet:"
foreach p $todo {
puts " $p"
}
}
break
}
# If we are reducing, put in a null entry
if {$todol < $nlines} {
if {$nullentry >= 0} {
set i $nullentry
while {$i < $todol
&& [lindex $oldtodo $i] == [lindex $todo $i]} {
incr i
}
} else {
set i $oldlevel
if {$level >= $i} {
incr i
}
}
if {$i >= $todol} {
set nullentry -1
} else {
set nullentry $i
set todo [linsert $todo $nullentry {}]
if {$level >= $i} {
incr level
}
}
} else {
set nullentry -1
}
foreach l $lines {
set i [lindex $l 0]
set dst [lindex $l 1]
set j [lsearch -exact $todo $dst]
if {$i == $j} {
set linestarty($i) $oldstarty($i)
continue
}
set xi [expr {$canvx0 + $i * $linespc}]
set xj [expr {$canvx0 + $j * $linespc}]
set coords {}
if {$oldstarty($i) < $canvy} {
lappend coords $xi $oldstarty($i)
}
lappend coords $xi $canvy
if {$j < $i - 1} {
lappend coords [expr $xj + $linespc] $canvy
} elseif {$j > $i + 1} {
lappend coords [expr $xj - $linespc] $canvy
}
lappend coords $xj $y2
set t [$canv create line $coords -width 2 -fill $colormap($dst)]
$canv lower $t
if {![info exists linestarty($j)]} {
set linestarty($j) $y2
}
}
}
}
proc selcanvline {x y} {
global canv canvy0 ctext linespc selectedline
global lineid linehtag linentag linedtag
set ymax [lindex [$canv cget -scrollregion] 3]
set yfrac [lindex [$canv yview] 0]
set y [expr {$y + $yfrac * $ymax}]
set l [expr {int(($y - $canvy0) / $linespc + 0.5)}]
if {$l < 0} {
set l 0
}
if {[info exists selectedline] && $selectedline == $l} return
selectline $l
}
proc selectline {l} {
global canv canv2 canv3 ctext commitinfo selectedline
global lineid linehtag linentag linedtag
global canvy canvy0 linespc nparents treepending
global cflist treediffs currentid
if {![info exists lineid($l)] || ![info exists linehtag($l)]} return
$canv delete secsel
set t [eval $canv create rect [$canv bbox $linehtag($l)] -outline {{}} \
-tags secsel -fill [$canv cget -selectbackground]]
$canv lower $t
$canv2 delete secsel
set t [eval $canv2 create rect [$canv2 bbox $linentag($l)] -outline {{}} \
-tags secsel -fill [$canv2 cget -selectbackground]]
$canv2 lower $t
$canv3 delete secsel
set t [eval $canv3 create rect [$canv3 bbox $linedtag($l)] -outline {{}} \
-tags secsel -fill [$canv3 cget -selectbackground]]
$canv3 lower $t
set y [expr {$canvy0 + $l * $linespc}]
set ytop [expr {($y - $linespc / 2.0) / $canvy}]
set ybot [expr {($y + $linespc / 2.0) / $canvy}]
set wnow [$canv yview]
if {$ytop < [lindex $wnow 0]} {
allcanvs yview moveto $ytop
} elseif {$ybot > [lindex $wnow 1]} {
set wh [expr {[lindex $wnow 1] - [lindex $wnow 0]}]
allcanvs yview moveto [expr {$ybot - $wh}]
}
set selectedline $l
set id $lineid($l)
$ctext conf -state normal
$ctext delete 0.0 end
set info $commitinfo($id)
$ctext insert end "Author: [lindex $info 1] [lindex $info 2]\n"
$ctext insert end "Committer: [lindex $info 3] [lindex $info 4]\n"
$ctext insert end "\n"
$ctext insert end [lindex $info 5]
$ctext insert end "\n"
$ctext tag delete Comments
$ctext conf -state disabled
$cflist delete 0 end
set currentid $id
if {$nparents($id) == 1} {
if {![info exists treediffs($id)]} {
if {![info exists treepending]} {
gettreediffs $id
}
} else {
addtocflist $id
}
}
}
proc selnextline {dir} {
global selectedline
if {![info exists selectedline]} return
set l [expr $selectedline + $dir]
selectline $l
}
proc addtocflist {id} {
global currentid treediffs cflist treepending
if {$id != $currentid} {
gettreediffs $currentid
return
}
$cflist insert end "All files"
foreach f $treediffs($currentid) {
$cflist insert end $f
}
getblobdiffs $id
}
proc gettreediffs {id} {
global treediffs parents treepending
set treepending $id
set treediffs($id) {}
set p [lindex $parents($id) 0]
if [catch {set gdtf [open "|git-diff-tree -r $p $id" r]}] return
fconfigure $gdtf -blocking 0
fileevent $gdtf readable "gettreediffline $gdtf $id"
}
proc gettreediffline {gdtf id} {
global treediffs treepending
set n [gets $gdtf line]
if {$n < 0} {
if {![eof $gdtf]} return
close $gdtf
unset treepending
addtocflist $id
return
}
set type [lindex $line 1]
set file [lindex $line 3]
if {$type == "blob"} {
lappend treediffs($id) $file
}
}
proc getblobdiffs {id} {
global parents diffopts blobdifffd env curdifftag curtagstart
set p [lindex $parents($id) 0]
set env(GIT_DIFF_OPTS) $diffopts
if [catch {set bdf [open "|git-diff-tree -r -p $p $id" r]} err] {
puts "error getting diffs: $err"
return
}
fconfigure $bdf -blocking 0
set blobdifffd($id) $bdf
set curdifftag Comments
set curtagstart 0.0
fileevent $bdf readable "getblobdiffline $bdf $id"
}
proc getblobdiffline {bdf id} {
global currentid blobdifffd ctext curdifftag curtagstart
set n [gets $bdf line]
if {$n < 0} {
if {[eof $bdf]} {
close $bdf
if {$id == $currentid && $bdf == $blobdifffd($id)} {
$ctext tag add $curdifftag $curtagstart end
}
}
return
}
if {$id != $currentid || $bdf != $blobdifffd($id)} {
return
}
$ctext conf -state normal
if {[regexp {^---[ \t]+([^/])+/(.*)} $line match s1 fname]} {
# start of a new file
$ctext insert end "\n"
$ctext tag add $curdifftag $curtagstart end
set curtagstart [$ctext index "end - 1c"]
set curdifftag "f:$fname"
$ctext tag delete $curdifftag
set l [expr {(78 - [string length $fname]) / 2}]
set pad [string range "----------------------------------------" 1 $l]
$ctext insert end "$pad $fname $pad\n" filesep
} elseif {[string range $line 0 2] == "+++"} {
# no need to do anything with this
} elseif {[regexp {^@@ -([0-9]+),([0-9]+) \+([0-9]+),([0-9]+) @@(.*)} \
$line match f1l f1c f2l f2c rest]} {
$ctext insert end "\t" hunksep
$ctext insert end " $f1l " d0 " $f2l " d1
$ctext insert end " $rest \n" hunksep
} else {
set x [string range $line 0 0]
if {$x == "-" || $x == "+"} {
set tag [expr {$x == "+"}]
set line [string range $line 1 end]
$ctext insert end "$line\n" d$tag
} elseif {$x == " "} {
set line [string range $line 1 end]
$ctext insert end "$line\n"
} else {
# Something else we don't recognize
if {$curdifftag != "Comments"} {
$ctext insert end "\n"
$ctext tag add $curdifftag $curtagstart end
set curtagstart [$ctext index "end - 1c"]
set curdifftag Comments
}
$ctext insert end "$line\n" filesep
}
}
$ctext conf -state disabled
}
proc listboxsel {} {
global ctext cflist currentid treediffs
set sel [$cflist curselection]
if {$sel == {} || [lsearch -exact $sel 0] >= 0} {
# show everything
$ctext tag conf Comments -elide 0
foreach f $treediffs($currentid) {
$ctext tag conf "f:$f" -elide 0
}
} else {
# just show selected files
$ctext tag conf Comments -elide 1
set i 1
foreach f $treediffs($currentid) {
set elide [expr {[lsearch -exact $sel $i] < 0}]
$ctext tag conf "f:$f" -elide $elide
incr i
}
}
}
getcommits $revtreeargs
set linespc [font metrics $mainfont -linespace]
set charspc [font measure $mainfont "m"]
set canvy0 [expr 3 + 0.5 * $linespc]
set canvx0 [expr 3 + 0.5 * $linespc]
set namex [expr 45 * $charspc]
set datex [expr 75 * $charspc]
makewindow
set start {}
foreach id $commits {
if {$nchildren($id) == 0} {
set start $id
break
}
}
if {$start != {}} {
drawgraph $start
}