Remove trailing spaces, fix indentation

contrib/hgk

@@ -1,3758 +1,3758 b''
 #!/usr/bin/env wish
 
 # 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.
 
 
 # Modified version of Tip 171:
 # http://www.tcl.tk/cgi-bin/tct/tip/171.html
 #
 # The in_mousewheel global was added to fix strange reentrancy issues.
 # The whole snipped is activated only under windows, mouse wheel
 # bindings working already under MacOSX and Linux.
 
 if {[tk windowingsystem] eq "win32"} {
 
 set mw_classes [list Text Listbox Table TreeCtrl]
    foreach class $mw_classes { bind $class <MouseWheel> {} }
 
 set in_mousewheel 0
 
 proc ::tk::MouseWheel {wFired X Y D {shifted 0}} {
     global in_mousewheel
     if { $in_mousewheel != 0 } { return }
     # Set event to check based on call
     set evt "<[expr {$shifted?{Shift-}:{}}]MouseWheel>"
     # do not double-fire in case the class already has a binding
     if {[bind [winfo class $wFired] $evt] ne ""} { return }
     # obtain the window the mouse is over
     set w [winfo containing $X $Y]
     # if we are outside the app, try and scroll the focus widget
     if {![winfo exists $w]} { catch {set w [focus]} }
     if {[winfo exists $w]} {
-        
+
         if {[bind $w $evt] ne ""} {
             # Awkward ... this widget has a MouseWheel binding, but to
             # trigger successfully in it, we must give it focus.
             catch {focus} old
             if {$w ne $old} { focus $w }
             set in_mousewheel 1
             event generate $w $evt -rootx $X -rooty $Y -delta $D
             set in_mousewheel 0
             if {$w ne $old} { focus $old }
             return
         }
 
         # aqua and x11/win32 have different delta handling
         if {[tk windowingsystem] ne "aqua"} {
             set delta [expr {- ($D / 30)}]
         } else {
             set delta [expr {- ($D)}]
         }
         # scrollbars have different call conventions
         if {[string match "*Scrollbar" [winfo class $w]]} {
             catch {tk::ScrollByUnits $w \
                        [string index [$w cget -orient] 0] $delta}
         } else {
             set cmd [list $w [expr {$shifted ? "xview" : "yview"}] \
                          scroll $delta units]
             # Walking up to find the proper widget (handles cases like
             # embedded widgets in a canvas)
             while {[catch $cmd] && [winfo toplevel $w] ne $w} {
                 set w [winfo parent $w]
             }
         }
     }
 }
 
 bind all <MouseWheel> [list ::tk::MouseWheel %W %X %Y %D 0]
 
 # end of win32 section
-} 
+}
 
 
 proc gitdir {} {
     global env
     if {[info exists env(GIT_DIR)]} {
 	return $env(GIT_DIR)
     } else {
 	return ".hg"
     }
 }
 
 proc getcommits {rargs} {
     global commits commfd phase canv mainfont env
     global startmsecs nextupdate ncmupdate
     global ctext maincursor textcursor leftover
 
     # check that we can find a .git directory somewhere...
     set gitdir [gitdir]
     if {![file isdirectory $gitdir]} {
 	error_popup "Cannot find the git directory \"$gitdir\"."
 	exit 1
     }
     set commits {}
     set phase getcommits
     set startmsecs [clock clicks -milliseconds]
     set nextupdate [expr $startmsecs + 100]
     set ncmupdate 1
     set limit 0
     set revargs {}
     for {set i 0} {$i < [llength $rargs]} {incr i} {
 	set opt [lindex $rargs $i]
 	if {$opt == "--limit"} {
 	    incr i
 	    set limit [lindex $rargs $i]
 	} else {
 	    lappend revargs $opt
 	}
     }
     if [catch {
 	set parse_args [concat --default HEAD $revargs]
 	set parse_temp [eval exec {$env(HG)} --config ui.report_untrusted=false debug-rev-parse $parse_args]
 	regsub -all "\r\n" $parse_temp "\n" parse_temp
 	set parsed_args [split $parse_temp "\n"]
     } err] {
 	# if git-rev-parse failed for some reason...
 	if {$rargs == {}} {
 	    set revargs HEAD
 	}
 	set parsed_args $revargs
     }
     if {$limit > 0} {
 	set parsed_args [concat -n $limit $parsed_args]
     }
     if [catch {
 	set commfd [open "|{$env(HG)} --config ui.report_untrusted=false debug-rev-list --header --topo-order --parents $parsed_args" r]
     } err] {
 	puts stderr "Error executing hg debug-rev-list: $err"
 	exit 1
     }
     set leftover {}
     fconfigure $commfd -blocking 0 -translation lf
     fileevent $commfd readable [list getcommitlines $commfd]
     $canv delete all
     $canv create text 3 3 -anchor nw -text "Reading commits..." \
 	-font $mainfont -tags textitems
     . config -cursor watch
     settextcursor watch
 }
 
 proc getcommitlines {commfd}  {
     global commits parents cdate children
     global commitlisted phase commitinfo nextupdate
     global stopped redisplaying leftover
 
     set stuff [read $commfd]
     if {$stuff == {}} {
 	if {![eof $commfd]} return
 	# set it blocking so we wait for the process to terminate
 	fconfigure $commfd -blocking 1
 	if {![catch {close $commfd} err]} {
 	    after idle finishcommits
 	    return
 	}
 	if {[string range $err 0 4] == "usage"} {
 	    set err \
 {Gitk: error reading commits: bad arguments to git-rev-list.
 (Note: arguments to gitk are passed to git-rev-list
 to allow selection of commits to be displayed.)}
 	} else {
 	    set err "Error reading commits: $err"
 	}
 	error_popup $err
 	exit 1
     }
     set start 0
     while 1 {
 	set i [string first "\0" $stuff $start]
 	if {$i < 0} {
 	    append leftover [string range $stuff $start end]
 	    return
 	}
 	set cmit [string range $stuff $start [expr {$i - 1}]]
 	if {$start == 0} {
 	    set cmit "$leftover$cmit"
 	    set leftover {}
 	}
 	set start [expr {$i + 1}]
 	regsub -all "\r\n" $cmit "\n" cmit
 	set j [string first "\n" $cmit]
 	set ok 0
 	if {$j >= 0} {
 	    set ids [string range $cmit 0 [expr {$j - 1}]]
 	    set ok 1
 	    foreach id $ids {
 		if {![regexp {^[0-9a-f]{12}$} $id]} {
 		    set ok 0
 		    break
 		}
 	    }
 	}
 	if {!$ok} {
 	    set shortcmit $cmit
 	    if {[string length $shortcmit] > 80} {
 		set shortcmit "[string range $shortcmit 0 80]..."
 	    }
 	    error_popup "Can't parse hg debug-rev-list output: {$shortcmit}"
 	    exit 1
 	}
 	set id [lindex $ids 0]
 	set olds [lrange $ids 1 end]
 	set cmit [string range $cmit [expr {$j + 1}] end]
 	lappend commits $id
 	set commitlisted($id) 1
 	parsecommit $id $cmit 1 [lrange $ids 1 end]
 	drawcommit $id
 	if {[clock clicks -milliseconds] >= $nextupdate} {
 	    doupdate 1
 	}
 	while {$redisplaying} {
 	    set redisplaying 0
 	    if {$stopped == 1} {
 		set stopped 0
 		set phase "getcommits"
 		foreach id $commits {
 		    drawcommit $id
 		    if {$stopped} break
 		    if {[clock clicks -milliseconds] >= $nextupdate} {
 			doupdate 1
 		    }
 		}
 	    }
 	}
     }
 }
 
 proc doupdate {reading} {
     global commfd nextupdate numcommits ncmupdate
 
     if {$reading} {
 	fileevent $commfd readable {}
     }
     update
     set nextupdate [expr {[clock clicks -milliseconds] + 100}]
     if {$numcommits < 100} {
 	set ncmupdate [expr {$numcommits + 1}]
     } elseif {$numcommits < 10000} {
 	set ncmupdate [expr {$numcommits + 10}]
     } else {
 	set ncmupdate [expr {$numcommits + 100}]
     }
     if {$reading} {
 	fileevent $commfd readable [list getcommitlines $commfd]
     }
 }
 
 proc readcommit {id} {
     global env
     if [catch {set contents [exec $env(HG) --config ui.report_untrusted=false debug-cat-file commit $id]}] return
     parsecommit $id $contents 0 {}
 }
 
 proc parsecommit {id contents listed olds} {
     global commitinfo children nchildren parents nparents cdate ncleft
 
     set inhdr 1
     set comment {}
     set headline {}
     set auname {}
     set audate {}
     set comname {}
     set comdate {}
     set rev {}
     if {![info exists nchildren($id)]} {
 	set children($id) {}
 	set nchildren($id) 0
 	set ncleft($id) 0
     }
     set parents($id) $olds
     set nparents($id) [llength $olds]
     foreach p $olds {
 	if {![info exists nchildren($p)]} {
 	    set children($p) [list $id]
 	    set nchildren($p) 1
 	    set ncleft($p) 1
 	} elseif {[lsearch -exact $children($p) $id] < 0} {
 	    lappend children($p) $id
 	    incr nchildren($p)
 	    incr ncleft($p)
 	}
     }
     regsub -all "\r\n" $contents "\n" contents
     foreach line [split $contents "\n"] {
 	if {$inhdr} {
 	    set line [split $line]
 	    if {$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 [join [lrange $line 1 [expr {$x - 1}]]]
 		} elseif {$tag == "committer"} {
 		    set x [expr {[llength $line] - 2}]
 		    set comdate [lindex $line $x]
 		    set comname [join [lrange $line 1 [expr {$x - 1}]]]
 		} elseif {$tag == "revision"} {
 		    set rev [lindex $line 1]
 		}
 	    }
 	} else {
 	    if {$comment == {}} {
 		set headline [string trim $line]
 	    } else {
 		append comment "\n"
 	    }
 	    if {!$listed} {
 		# git-rev-list indents the comment by 4 spaces;
 		# if we got this via git-cat-file, add the indentation
 		append comment "    "
 	    }
 	    append comment $line
 	}
     }
     if {$audate != {}} {
 	set audate [clock format $audate -format "%Y-%m-%d %H:%M:%S"]
     }
     if {$comdate != {}} {
 	set cdate($id) $comdate
 	set comdate [clock format $comdate -format "%Y-%m-%d %H:%M:%S"]
     }
     set commitinfo($id) [list $headline $auname $audate \
 			     $comname $comdate $comment $rev]
 }
 
 proc readrefs {} {
     global tagids idtags headids idheads tagcontents env
 
     set tags [exec $env(HG) --config ui.report_untrusted=false tags]
     regsub -all "\r\n" $tags "\n" tags
     set lines [split $tags "\n"]
     foreach f $lines {
 	regexp {(\S+)$} $f full
 	regsub {\s+(\S+)$} $f "" direct
 	set sha [split $full ':']
 	set tag [lindex $sha 1]
 	lappend tagids($direct) $tag
 	lappend idtags($tag) $direct
     }
 }
 
 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]{12}} $line id]} {
 		set name "$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 allcansmousewheel {delta} {
     set delta [expr -5*(int($delta)/abs($delta))]
     allcanvs yview scroll $delta units
 }
 
 proc error_popup msg {
     set w .error
     toplevel $w
     wm transient $w .
     message $w.m -text $msg -justify center -aspect 400
     pack $w.m -side top -fill x -padx 20 -pady 20
     button $w.ok -text OK -command "destroy $w"
     pack $w.ok -side bottom -fill x
     bind $w <Visibility> "grab $w; focus $w"
     tkwait window $w
 }
 
 proc makewindow {} {
     global canv canv2 canv3 linespc charspc ctext cflist textfont
     global findtype findtypemenu findloc findstring fstring geometry
     global entries sha1entry sha1string sha1but
     global maincursor textcursor curtextcursor
     global rowctxmenu gaudydiff mergemax
 
     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.help add command -label "About gitk" -command about
     . configure -menu .bar
 
     if {![info exists geometry(canv1)]} {
 	set geometry(canv1) [expr 45 * $charspc]
 	set geometry(canv2) [expr 30 * $charspc]
 	set geometry(canv3) [expr 15 * $charspc]
 	set geometry(canvh) [expr 25 * $linespc + 4]
 	set geometry(ctextw) 80
 	set geometry(ctexth) 30
 	set geometry(cflistw) 30
     }
     panedwindow .ctop -orient vertical
     if {[info exists geometry(width)]} {
 	.ctop conf -width $geometry(width) -height $geometry(height)
 	set texth [expr {$geometry(height) - $geometry(canvh) - 56}]
 	set geometry(ctexth) [expr {($texth - 8) /
 				    [font metrics $textfont -linespace]}]
     }
     frame .ctop.top
     frame .ctop.top.bar
     pack .ctop.top.bar -side bottom -fill x
     set cscroll .ctop.top.csb
     scrollbar $cscroll -command {allcanvs yview} -highlightthickness 0
     pack $cscroll -side right -fill y
     panedwindow .ctop.top.clist -orient horizontal -sashpad 0 -handlesize 4
     pack .ctop.top.clist -side top -fill both -expand 1
     .ctop add .ctop.top
     set canv .ctop.top.clist.canv
     canvas $canv -height $geometry(canvh) -width $geometry(canv1) \
 	-bg white -bd 0 \
 	-yscrollincr $linespc -yscrollcommand "$cscroll set" -selectbackground grey
     .ctop.top.clist add $canv
     set canv2 .ctop.top.clist.canv2
     canvas $canv2 -height $geometry(canvh) -width $geometry(canv2) \
 	-bg white -bd 0 -yscrollincr $linespc -selectbackground grey
     .ctop.top.clist add $canv2
     set canv3 .ctop.top.clist.canv3
     canvas $canv3 -height $geometry(canvh) -width $geometry(canv3) \
 	-bg white -bd 0 -yscrollincr $linespc -selectbackground grey
     .ctop.top.clist add $canv3
     bind .ctop.top.clist <Configure> {resizeclistpanes %W %w}
 
     set sha1entry .ctop.top.bar.sha1
     set entries $sha1entry
     set sha1but .ctop.top.bar.sha1label
     button $sha1but -text "SHA1 ID: " -state disabled -relief flat \
 	-command gotocommit -width 8
     $sha1but conf -disabledforeground [$sha1but cget -foreground]
     pack .ctop.top.bar.sha1label -side left
     entry $sha1entry -width 40 -font $textfont -textvariable sha1string
     trace add variable sha1string write sha1change
     pack $sha1entry -side left -pady 2
 
     image create bitmap bm-left -data {
 	#define left_width 16
 	#define left_height 16
 	static unsigned char left_bits[] = {
 	0x00, 0x00, 0xc0, 0x01, 0xe0, 0x00, 0x70, 0x00, 0x38, 0x00, 0x1c, 0x00,
 	0x0e, 0x00, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x0e, 0x00, 0x1c, 0x00,
 	0x38, 0x00, 0x70, 0x00, 0xe0, 0x00, 0xc0, 0x01};
     }
     image create bitmap bm-right -data {
 	#define right_width 16
 	#define right_height 16
 	static unsigned char right_bits[] = {
 	0x00, 0x00, 0xc0, 0x01, 0x80, 0x03, 0x00, 0x07, 0x00, 0x0e, 0x00, 0x1c,
 	0x00, 0x38, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x00, 0x38, 0x00, 0x1c,
 	0x00, 0x0e, 0x00, 0x07, 0x80, 0x03, 0xc0, 0x01};
     }
     button .ctop.top.bar.leftbut -image bm-left -command goback \
 	-state disabled -width 26
     pack .ctop.top.bar.leftbut -side left -fill y
     button .ctop.top.bar.rightbut -image bm-right -command goforw \
 	-state disabled -width 26
     pack .ctop.top.bar.rightbut -side left -fill y
 
     button .ctop.top.bar.findbut -text "Find" -command dofind
     pack .ctop.top.bar.findbut -side left
     set findstring {}
     set fstring .ctop.top.bar.findstring
     lappend entries $fstring
     entry $fstring -width 30 -font $textfont -textvariable findstring
     pack $fstring -side left -expand 1 -fill x
     set findtype Exact
     set findtypemenu [tk_optionMenu .ctop.top.bar.findtype \
 			  findtype Exact IgnCase Regexp]
     set findloc "All fields"
     tk_optionMenu .ctop.top.bar.findloc findloc "All fields" Headline \
 	Comments Author Committer Files Pickaxe
     pack .ctop.top.bar.findloc -side right
     pack .ctop.top.bar.findtype -side right
     # for making sure type==Exact whenever loc==Pickaxe
     trace add variable findloc write findlocchange
 
     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 \
 	-width $geometry(ctextw) -height $geometry(ctexth) \
 	-yscrollcommand ".ctop.cdet.left.sb set" \
 	-xscrollcommand ".ctop.cdet.left.hb set" -wrap none
     scrollbar .ctop.cdet.left.sb -command "$ctext yview"
     scrollbar .ctop.cdet.left.hb -orient horizontal -command "$ctext xview"
     pack .ctop.cdet.left.sb -side right -fill y
     pack .ctop.cdet.left.hb -side bottom -fill x
     pack $ctext -side left -fill both -expand 1
     .ctop.cdet add .ctop.cdet.left
 
     $ctext tag conf filesep -font [concat $textfont bold] -back "#aaaaaa"
     if {$gaudydiff} {
 	$ctext tag conf hunksep -back blue -fore white
 	$ctext tag conf d0 -back "#ff8080"
 	$ctext tag conf d1 -back green
     } else {
 	$ctext tag conf hunksep -fore blue
 	$ctext tag conf d0 -fore red
 	$ctext tag conf d1 -fore "#00a000"
 	$ctext tag conf m0 -fore red
 	$ctext tag conf m1 -fore blue
 	$ctext tag conf m2 -fore green
 	$ctext tag conf m3 -fore purple
 	$ctext tag conf m4 -fore brown
 	$ctext tag conf mmax -fore darkgrey
 	set mergemax 5
 	$ctext tag conf mresult -font [concat $textfont bold]
 	$ctext tag conf msep -font [concat $textfont bold]
 	$ctext tag conf found -back yellow
     }
 
     frame .ctop.cdet.right
     set cflist .ctop.cdet.right.cfiles
     listbox $cflist -bg white -selectmode extended -width $geometry(cflistw) \
 	-yscrollcommand ".ctop.cdet.right.sb set"
     scrollbar .ctop.cdet.right.sb -command "$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
     bind .ctop.cdet <Configure> {resizecdetpanes %W %w}
 
     pack .ctop -side top -fill both -expand 1
 
     bindall <1> {selcanvline %W %x %y}
     #bindall <B1-Motion> {selcanvline %W %x %y}
     bindall <MouseWheel> "allcansmousewheel %D"
     bindall <ButtonRelease-4> "allcanvs yview scroll -5 units"
     bindall <ButtonRelease-5> "allcanvs yview scroll 5 units"
     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 . <Key-Prior> "allcanvs yview scroll -1 pages"
     bind . <Key-Next> "allcanvs yview scroll 1 pages"
     bindkey <Key-Delete> "$ctext yview scroll -1 pages"
     bindkey <Key-BackSpace> "$ctext yview scroll -1 pages"
     bindkey <Key-space> "$ctext yview scroll 1 pages"
     bindkey p "selnextline -1"
     bindkey n "selnextline 1"
     bindkey b "$ctext yview scroll -1 pages"
     bindkey d "$ctext yview scroll 18 units"
     bindkey u "$ctext yview scroll -18 units"
     bindkey / {findnext 1}
     bindkey <Key-Return> {findnext 0}
     bindkey ? findprev
     bindkey f nextfile
     bind . <Control-q> doquit
     bind . <Control-w> doquit
     bind . <Control-f> dofind
     bind . <Control-g> {findnext 0}
     bind . <Control-r> findprev
     bind . <Control-equal> {incrfont 1}
     bind . <Control-KP_Add> {incrfont 1}
     bind . <Control-minus> {incrfont -1}
     bind . <Control-KP_Subtract> {incrfont -1}
     bind $cflist <<ListboxSelect>> listboxsel
     bind . <Destroy> {savestuff %W}
     bind . <Button-1> "click %W"
     bind $fstring <Key-Return> dofind
     bind $sha1entry <Key-Return> gotocommit
     bind $sha1entry <<PasteSelection>> clearsha1
 
     set maincursor [. cget -cursor]
     set textcursor [$ctext cget -cursor]
     set curtextcursor $textcursor
 
     set rowctxmenu .rowctxmenu
     menu $rowctxmenu -tearoff 0
     $rowctxmenu add command -label "Diff this -> selected" \
 	-command {diffvssel 0}
     $rowctxmenu add command -label "Diff selected -> this" \
 	-command {diffvssel 1}
     $rowctxmenu add command -label "Make patch" -command mkpatch
     $rowctxmenu add command -label "Create tag" -command mktag
     $rowctxmenu add command -label "Write commit to file" -command writecommit
 }
 
 # when we make a key binding for the toplevel, make sure
 # it doesn't get triggered when that key is pressed in the
 # find string entry widget.
 proc bindkey {ev script} {
     global entries
     bind . $ev $script
     set escript [bind Entry $ev]
     if {$escript == {}} {
 	set escript [bind Entry <Key>]
     }
     foreach e $entries {
 	bind $e $ev "$escript; break"
     }
 }
 
 # set the focus back to the toplevel for any click outside
 # the entry widgets
 proc click {w} {
     global entries
     foreach e $entries {
 	if {$w == $e} return
     }
     focus .
 }
 
 proc savestuff {w} {
     global canv canv2 canv3 ctext cflist mainfont textfont
     global stuffsaved findmergefiles gaudydiff maxgraphpct
     global maxwidth
 
     if {$stuffsaved} return
     if {![winfo viewable .]} return
     catch {
 	set f [open "~/.gitk-new" w]
 	puts $f [list set mainfont $mainfont]
 	puts $f [list set textfont $textfont]
 	puts $f [list set findmergefiles $findmergefiles]
 	puts $f [list set gaudydiff $gaudydiff]
 	puts $f [list set maxgraphpct $maxgraphpct]
 	puts $f [list set maxwidth $maxwidth]
 	puts $f "set geometry(width) [winfo width .ctop]"
 	puts $f "set geometry(height) [winfo height .ctop]"
 	puts $f "set geometry(canv1) [expr [winfo width $canv]-2]"
 	puts $f "set geometry(canv2) [expr [winfo width $canv2]-2]"
 	puts $f "set geometry(canv3) [expr [winfo width $canv3]-2]"
 	puts $f "set geometry(canvh) [expr [winfo height $canv]-2]"
 	set wid [expr {([winfo width $ctext] - 8) \
 			   / [font measure $textfont "0"]}]
 	puts $f "set geometry(ctextw) $wid"
 	set wid [expr {([winfo width $cflist] - 11) \
 			   / [font measure [$cflist cget -font] "0"]}]
 	puts $f "set geometry(cflistw) $wid"
 	close $f
 	file rename -force "~/.gitk-new" "~/.gitk"
     }
     set stuffsaved 1
 }
 
 proc resizeclistpanes {win w} {
     global oldwidth
     if [info exists oldwidth($win)] {
 	set s0 [$win sash coord 0]
 	set s1 [$win sash coord 1]
 	if {$w < 60} {
 	    set sash0 [expr {int($w/2 - 2)}]
 	    set sash1 [expr {int($w*5/6 - 2)}]
 	} else {
 	    set factor [expr {1.0 * $w / $oldwidth($win)}]
 	    set sash0 [expr {int($factor * [lindex $s0 0])}]
 	    set sash1 [expr {int($factor * [lindex $s1 0])}]
 	    if {$sash0 < 30} {
 		set sash0 30
 	    }
 	    if {$sash1 < $sash0 + 20} {
 		set sash1 [expr $sash0 + 20]
 	    }
 	    if {$sash1 > $w - 10} {
 		set sash1 [expr $w - 10]
 		if {$sash0 > $sash1 - 20} {
 		    set sash0 [expr $sash1 - 20]
 		}
 	    }
 	}
 	$win sash place 0 $sash0 [lindex $s0 1]
 	$win sash place 1 $sash1 [lindex $s1 1]
     }
     set oldwidth($win) $w
 }
 
 proc resizecdetpanes {win w} {
     global oldwidth
     if [info exists oldwidth($win)] {
 	set s0 [$win sash coord 0]
 	if {$w < 60} {
 	    set sash0 [expr {int($w*3/4 - 2)}]
 	} else {
 	    set factor [expr {1.0 * $w / $oldwidth($win)}]
 	    set sash0 [expr {int($factor * [lindex $s0 0])}]
 	    if {$sash0 < 45} {
 		set sash0 45
 	    }
 	    if {$sash0 > $w - 15} {
 		set sash0 [expr $w - 15]
 	    }
 	}
 	$win sash place 0 $sash0 [lindex $s0 1]
     }
     set oldwidth($win) $w
 }
 
 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 about {} {
     set w .about
     if {[winfo exists $w]} {
 	raise $w
 	return
     }
     toplevel $w
     wm title $w "About gitk"
     message $w.m -text {
 Gitk version 1.2
 
 Copyright � 2005 Paul Mackerras
 
 Use and redistribute under the terms of the GNU General Public License} \
 	    -justify center -aspect 400
     pack $w.m -side top -fill x -padx 20 -pady 20
     button $w.ok -text Close -command "destroy $w"
     pack $w.ok -side bottom
 }
 
 proc assigncolor {id} {
     global commitinfo colormap commcolors colors nextcolor
     global parents nparents children nchildren
     global cornercrossings crossings
 
     if [info exists colormap($id)] return
     set ncolors [llength $colors]
     if {$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 {}
     if {[info exists cornercrossings($id)]} {
 	foreach x $cornercrossings($id) {
 	    if {[info exists colormap($x)]
 		&& [lsearch -exact $badcolors $colormap($x)] < 0} {
 		lappend badcolors $colormap($x)
 	    }
 	}
 	if {[llength $badcolors] >= $ncolors} {
 	    set badcolors {}
 	}
     }
     set origbad $badcolors
     if {[llength $badcolors] < $ncolors - 1} {
 	if {[info exists crossings($id)]} {
 	    foreach x $crossings($id) {
 		if {[info exists colormap($x)]
 		    && [lsearch -exact $badcolors $colormap($x)] < 0} {
 		    lappend badcolors $colormap($x)
 		}
 	    }
 	    if {[llength $badcolors] >= $ncolors} {
 		set badcolors $origbad
 	    }
 	}
 	set origbad $badcolors
     }
     if {[llength $badcolors] < $ncolors - 1} {
 	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 $origbad
 	}
     }
     for {set i 0} {$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 initgraph {} {
     global canvy canvy0 lineno numcommits nextcolor linespc
     global mainline mainlinearrow sidelines
     global nchildren ncleft
     global displist nhyperspace
 
     allcanvs delete all
     set nextcolor 0
     set canvy $canvy0
     set lineno -1
     set numcommits 0
     catch {unset mainline}
     catch {unset mainlinearrow}
     catch {unset sidelines}
     foreach id [array names nchildren] {
 	set ncleft($id) $nchildren($id)
     }
     set displist {}
     set nhyperspace 0
 }
 
 proc bindline {t id} {
     global canv
 
     $canv bind $t <Enter> "lineenter %x %y $id"
     $canv bind $t <Motion> "linemotion %x %y $id"
     $canv bind $t <Leave> "lineleave $id"
     $canv bind $t <Button-1> "lineclick %x %y $id 1"
 }
 
 proc drawlines {id xtra} {
     global mainline mainlinearrow sidelines lthickness colormap canv
 
     $canv delete lines.$id
     if {[info exists mainline($id)]} {
 	set t [$canv create line $mainline($id) \
 		   -width [expr {($xtra + 1) * $lthickness}] \
 		   -fill $colormap($id) -tags lines.$id \
 		   -arrow $mainlinearrow($id)]
 	$canv lower $t
 	bindline $t $id
     }
     if {[info exists sidelines($id)]} {
 	foreach ls $sidelines($id) {
 	    set coords [lindex $ls 0]
 	    set thick [lindex $ls 1]
 	    set arrow [lindex $ls 2]
 	    set t [$canv create line $coords -fill $colormap($id) \
 		       -width [expr {($thick + $xtra) * $lthickness}] \
 		       -arrow $arrow -tags lines.$id]
 	    $canv lower $t
 	    bindline $t $id
 	}
     }
 }
 
 # level here is an index in displist
 proc drawcommitline {level} {
     global parents children nparents displist
     global canv canv2 canv3 mainfont namefont canvy linespc
     global lineid linehtag linentag linedtag commitinfo
     global colormap numcommits currentparents dupparents
     global idtags idline idheads idotherrefs
     global lineno lthickness mainline mainlinearrow sidelines
     global commitlisted rowtextx idpos lastuse displist
     global oldnlines olddlevel olddisplist
 
     incr numcommits
     incr lineno
     set id [lindex $displist $level]
     set lastuse($id) $lineno
     set lineid($lineno) $id
     set idline($id) $lineno
     set ofill [expr {[info exists commitlisted($id)]? "blue": "white"}]
     if {![info exists commitinfo($id)]} {
 	readcommit $id
 	if {![info exists commitinfo($id)]} {
 	    set commitinfo($id) {"No commit information available"}
 	    set nparents($id) 0
 	}
     }
     assigncolor $id
     set currentparents {}
     set dupparents {}
     if {[info exists commitlisted($id)] && [info exists parents($id)]} {
 	foreach p $parents($id) {
 	    if {[lsearch -exact $currentparents $p] < 0} {
 		lappend currentparents $p
 	    } else {
 		# remember that this parent was listed twice
 		lappend dupparents $p
 	    }
 	}
     }
     set x [xcoord $level $level $lineno]
     set y1 $canvy
     set canvy [expr $canvy + $linespc]
     allcanvs conf -scrollregion \
 	[list 0 0 0 [expr $y1 + 0.5 * $linespc + 2]]
     if {[info exists mainline($id)]} {
 	lappend mainline($id) $x $y1
 	if {$mainlinearrow($id) ne "none"} {
 	    set mainline($id) [trimdiagstart $mainline($id)]
 	}
     }
     drawlines $id 0
     set orad [expr {$linespc / 3}]
     set t [$canv create oval [expr $x - $orad] [expr $y1 - $orad] \
 	       [expr $x + $orad - 1] [expr $y1 + $orad - 1] \
 	       -fill $ofill -outline black -width 1]
     $canv raise $t
     $canv bind $t <1> {selcanvline {} %x %y}
     set xt [xcoord [llength $displist] $level $lineno]
     if {[llength $currentparents] > 2} {
 	set xt [expr {$xt + ([llength $currentparents] - 2) * $linespc}]
     }
     set rowtextx($lineno) $xt
     set idpos($id) [list $x $xt $y1]
     if {[info exists idtags($id)] || [info exists idheads($id)]
 	|| [info exists idotherrefs($id)]} {
 	set xt [drawtags $id $x $xt $y1]
     }
     set headline [lindex $commitinfo($id) 0]
     set name [lindex $commitinfo($id) 1]
     set date [lindex $commitinfo($id) 2]
     set linehtag($lineno) [$canv create text $xt $y1 -anchor w \
 			       -text $headline -font $mainfont ]
     $canv bind $linehtag($lineno) <Button-3> "rowmenu %X %Y $id"
     set linentag($lineno) [$canv2 create text 3 $y1 -anchor w \
 			       -text $name -font $namefont]
     set linedtag($lineno) [$canv3 create text 3 $y1 -anchor w \
 			       -text $date -font $mainfont]
 
     set olddlevel $level
     set olddisplist $displist
     set oldnlines [llength $displist]
 }
 
 proc drawtags {id x xt y1} {
     global idtags idheads idotherrefs
     global linespc lthickness
     global canv mainfont idline rowtextx
 
     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)]
 	set nheads [llength $idheads($id)]
     }
     if {[info exists idotherrefs($id)]} {
 	set marks [concat $marks $idotherrefs($id)]
     }
     if {$marks eq {}} {
 	return $xt
     }
 
     set delta [expr {int(0.5 * ($linespc - $lthickness))}]
     set yt [expr $y1 - 0.5 * $linespc]
     set yb [expr $yt + $linespc - 1]
     set xvals {}
     set wvals {}
     foreach tag $marks {
 	set wid [font measure $mainfont $tag]
 	lappend xvals $xt
 	lappend wvals $wid
 	set xt [expr {$xt + $delta + $wid + $lthickness + $linespc}]
     }
     set t [$canv create line $x $y1 [lindex $xvals end] $y1 \
 	       -width $lthickness -fill black -tags tag.$id]
     $canv lower $t
     foreach tag $marks x $xvals wid $wvals {
 	set xl [expr $x + $delta]
 	set xr [expr $x + $delta + $wid + $lthickness]
 	if {[incr ntags -1] >= 0} {
 	    # draw a tag
 	    set t [$canv create polygon $x [expr $yt + $delta] $xl $yt \
 		       $xr $yt $xr $yb $xl $yb $x [expr $yb - $delta] \
 		       -width 1 -outline black -fill yellow -tags tag.$id]
 	    $canv bind $t <1> [list showtag $tag 1]
 	    set rowtextx($idline($id)) [expr {$xr + $linespc}]
 	} else {
 	    # 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 \
 		-width 1 -outline black -fill $col -tags tag.$id
 	}
 	set t [$canv create text $xl $y1 -anchor w -text $tag \
 		   -font $mainfont -tags tag.$id]
 	if {$ntags >= 0} {
 	    $canv bind $t <1> [list showtag $tag 1]
 	}
     }
     return $xt
 }
 
 proc notecrossings {id lo hi corner} {
     global olddisplist crossings cornercrossings
 
     for {set i $lo} {[incr i] < $hi} {} {
 	set p [lindex $olddisplist $i]
 	if {$p == {}} continue
 	if {$i == $corner} {
 	    if {![info exists cornercrossings($id)]
 		|| [lsearch -exact $cornercrossings($id) $p] < 0} {
 		lappend cornercrossings($id) $p
 	    }
 	    if {![info exists cornercrossings($p)]
 		|| [lsearch -exact $cornercrossings($p) $id] < 0} {
 		lappend cornercrossings($p) $id
 	    }
 	} else {
 	    if {![info exists crossings($id)]
 		|| [lsearch -exact $crossings($id) $p] < 0} {
 		lappend crossings($id) $p
 	    }
 	    if {![info exists crossings($p)]
 		|| [lsearch -exact $crossings($p) $id] < 0} {
 		lappend crossings($p) $id
 	    }
 	}
     }
 }
 
 proc xcoord {i level ln} {
     global canvx0 xspc1 xspc2
 
     set x [expr {$canvx0 + $i * $xspc1($ln)}]
     if {$i > 0 && $i == $level} {
 	set x [expr {$x + 0.5 * ($xspc2 - $xspc1($ln))}]
     } elseif {$i > $level} {
 	set x [expr {$x + $xspc2 - $xspc1($ln)}]
     }
     return $x
 }
 
 # it seems Tk can't draw arrows on the end of diagonal line segments...
 proc trimdiagend {line} {
     while {[llength $line] > 4} {
 	set x1 [lindex $line end-3]
 	set y1 [lindex $line end-2]
 	set x2 [lindex $line end-1]
 	set y2 [lindex $line end]
 	if {($x1 == $x2) != ($y1 == $y2)} break
 	set line [lreplace $line end-1 end]
     }
     return $line
 }
 
 proc trimdiagstart {line} {
     while {[llength $line] > 4} {
 	set x1 [lindex $line 0]
 	set y1 [lindex $line 1]
 	set x2 [lindex $line 2]
 	set y2 [lindex $line 3]
 	if {($x1 == $x2) != ($y1 == $y2)} break
 	set line [lreplace $line 0 1]
     }
     return $line
 }
 
 proc drawslants {id needonscreen nohs} {
     global canv mainline mainlinearrow sidelines
     global canvx0 canvy xspc1 xspc2 lthickness
     global currentparents dupparents
     global lthickness linespc canvy colormap lineno geometry
     global maxgraphpct maxwidth
     global displist onscreen lastuse
     global parents commitlisted
     global oldnlines olddlevel olddisplist
     global nhyperspace numcommits nnewparents
 
     if {$lineno < 0} {
 	lappend displist $id
 	set onscreen($id) 1
 	return 0
     }
 
     set y1 [expr {$canvy - $linespc}]
     set y2 $canvy
 
     # work out what we need to get back on screen
     set reins {}
     if {$onscreen($id) < 0} {
 	# next to do isn't displayed, better get it on screen...
 	lappend reins [list $id 0]
     }
     # make sure all the previous commits's parents are on the screen
     foreach p $currentparents {
 	if {$onscreen($p) < 0} {
 	    lappend reins [list $p 0]
 	}
     }
     # bring back anything requested by caller
     if {$needonscreen ne {}} {
 	lappend reins $needonscreen
     }
 
     # try the shortcut
     if {$currentparents == $id && $onscreen($id) == 0 && $reins eq {}} {
 	set dlevel $olddlevel
 	set x [xcoord $dlevel $dlevel $lineno]
 	set mainline($id) [list $x $y1]
 	set mainlinearrow($id) none
 	set lastuse($id) $lineno
 	set displist [lreplace $displist $dlevel $dlevel $id]
 	set onscreen($id) 1
 	set xspc1([expr {$lineno + 1}]) $xspc1($lineno)
 	return $dlevel
     }
 
     # update displist
     set displist [lreplace $displist $olddlevel $olddlevel]
     set j $olddlevel
     foreach p $currentparents {
 	set lastuse($p) $lineno
 	if {$onscreen($p) == 0} {
 	    set displist [linsert $displist $j $p]
 	    set onscreen($p) 1
 	    incr j
 	}
     }
     if {$onscreen($id) == 0} {
 	lappend displist $id
 	set onscreen($id) 1
     }
 
     # remove the null entry if present
     set nullentry [lsearch -exact $displist {}]
     if {$nullentry >= 0} {
 	set displist [lreplace $displist $nullentry $nullentry]
     }
 
     # bring back the ones we need now (if we did it earlier
     # it would change displist and invalidate olddlevel)
     foreach pi $reins {
 	# test again in case of duplicates in reins
 	set p [lindex $pi 0]
 	if {$onscreen($p) < 0} {
 	    set onscreen($p) 1
 	    set lastuse($p) $lineno
 	    set displist [linsert $displist [lindex $pi 1] $p]
 	    incr nhyperspace -1
 	}
     }
 
     set lastuse($id) $lineno
 
     # see if we need to make any lines jump off into hyperspace
     set displ [llength $displist]
     if {$displ > $maxwidth} {
 	set ages {}
 	foreach x $displist {
 	    lappend ages [list $lastuse($x) $x]
 	}
 	set ages [lsort -integer -index 0 $ages]
 	set k 0
 	while {$displ > $maxwidth} {
 	    set use [lindex $ages $k 0]
 	    set victim [lindex $ages $k 1]
 	    if {$use >= $lineno - 5} break
 	    incr k
 	    if {[lsearch -exact $nohs $victim] >= 0} continue
 	    set i [lsearch -exact $displist $victim]
 	    set displist [lreplace $displist $i $i]
 	    set onscreen($victim) -1
 	    incr nhyperspace
 	    incr displ -1
 	    if {$i < $nullentry} {
 		incr nullentry -1
 	    }
 	    set x [lindex $mainline($victim) end-1]
 	    lappend mainline($victim) $x $y1
 	    set line [trimdiagend $mainline($victim)]
 	    set arrow "last"
 	    if {$mainlinearrow($victim) ne "none"} {
 		set line [trimdiagstart $line]
 		set arrow "both"
 	    }
 	    lappend sidelines($victim) [list $line 1 $arrow]
 	    unset mainline($victim)
 	}
     }
 
     set dlevel [lsearch -exact $displist $id]
 
     # If we are reducing, put in a null entry
     if {$displ < $oldnlines} {
 	# does the next line look like a merge?
 	# i.e. does it have > 1 new parent?
 	if {$nnewparents($id) > 1} {
 	    set i [expr {$dlevel + 1}]
 	} elseif {$nnewparents([lindex $olddisplist $olddlevel]) == 0} {
 	    set i $olddlevel
 	    if {$nullentry >= 0 && $nullentry < $i} {
 		incr i -1
 	    }
 	} elseif {$nullentry >= 0} {
 	    set i $nullentry
 	    while {$i < $displ
 		   && [lindex $olddisplist $i] == [lindex $displist $i]} {
 		incr i
 	    }
 	} else {
 	    set i $olddlevel
 	    if {$dlevel >= $i} {
 		incr i
 	    }
 	}
 	if {$i < $displ} {
 	    set displist [linsert $displist $i {}]
 	    incr displ
 	    if {$dlevel >= $i} {
 		incr dlevel
 	    }
 	}
     }
 
     # decide on the line spacing for the next line
     set lj [expr {$lineno + 1}]
     set maxw [expr {$maxgraphpct * $geometry(canv1) / 100}]
     if {$displ <= 1 || $canvx0 + $displ * $xspc2 <= $maxw} {
 	set xspc1($lj) $xspc2
     } else {
 	set xspc1($lj) [expr {($maxw - $canvx0 - $xspc2) / ($displ - 1)}]
 	if {$xspc1($lj) < $lthickness} {
 	    set xspc1($lj) $lthickness
 	}
     }
 
     foreach idi $reins {
 	set id [lindex $idi 0]
 	set j [lsearch -exact $displist $id]
 	set xj [xcoord $j $dlevel $lj]
 	set mainline($id) [list $xj $y2]
 	set mainlinearrow($id) first
     }
 
     set i -1
     foreach id $olddisplist {
 	incr i
 	if {$id == {}} continue
 	if {$onscreen($id) <= 0} continue
 	set xi [xcoord $i $olddlevel $lineno]
 	if {$i == $olddlevel} {
 	    foreach p $currentparents {
 		set j [lsearch -exact $displist $p]
 		set coords [list $xi $y1]
 		set xj [xcoord $j $dlevel $lj]
 		if {$xj < $xi - $linespc} {
 		    lappend coords [expr {$xj + $linespc}] $y1
 		    notecrossings $p $j $i [expr {$j + 1}]
 		} elseif {$xj > $xi + $linespc} {
 		    lappend coords [expr {$xj - $linespc}] $y1
 		    notecrossings $p $i $j [expr {$j - 1}]
 		}
 		if {[lsearch -exact $dupparents $p] >= 0} {
 		    # draw a double-width line to indicate the doubled parent
 		    lappend coords $xj $y2
 		    lappend sidelines($p) [list $coords 2 none]
 		    if {![info exists mainline($p)]} {
 			set mainline($p) [list $xj $y2]
 			set mainlinearrow($p) none
 		    }
 		} else {
 		    # normal case, no parent duplicated
 		    set yb $y2
 		    set dx [expr {abs($xi - $xj)}]
 		    if {0 && $dx < $linespc} {
 			set yb [expr {$y1 + $dx}]
 		    }
 		    if {![info exists mainline($p)]} {
 			if {$xi != $xj} {
 			    lappend coords $xj $yb
 			}
 			set mainline($p) $coords
 			set mainlinearrow($p) none
 		    } else {
 			lappend coords $xj $yb
 			if {$yb < $y2} {
 			    lappend coords $xj $y2
 			}
 			lappend sidelines($p) [list $coords 1 none]
 		    }
 		}
 	    }
 	} else {
 	    set j $i
 	    if {[lindex $displist $i] != $id} {
 		set j [lsearch -exact $displist $id]
 	    }
 	    if {$j != $i || $xspc1($lineno) != $xspc1($lj)
 		|| ($olddlevel < $i && $i < $dlevel)
 		|| ($dlevel < $i && $i < $olddlevel)} {
 		set xj [xcoord $j $dlevel $lj]
 		lappend mainline($id) $xi $y1 $xj $y2
 	    }
 	}
     }
     return $dlevel
 }
 
 # search for x in a list of lists
 proc llsearch {llist x} {
     set i 0
     foreach l $llist {
 	if {$l == $x || [lsearch -exact $l $x] >= 0} {
 	    return $i
 	}
 	incr i
     }
     return -1
 }
 
 proc drawmore {reading} {
     global displayorder numcommits ncmupdate nextupdate
     global stopped nhyperspace parents commitlisted
     global maxwidth onscreen displist currentparents olddlevel
 
     set n [llength $displayorder]
     while {$numcommits < $n} {
 	set id [lindex $displayorder $numcommits]
 	set ctxend [expr {$numcommits + 10}]
 	if {!$reading && $ctxend > $n} {
 	    set ctxend $n
 	}
 	set dlist {}
 	if {$numcommits > 0} {
 	    set dlist [lreplace $displist $olddlevel $olddlevel]
 	    set i $olddlevel
 	    foreach p $currentparents {
 		if {$onscreen($p) == 0} {
 		    set dlist [linsert $dlist $i $p]
 		    incr i
 		}
 	    }
 	}
 	set nohs {}
 	set reins {}
 	set isfat [expr {[llength $dlist] > $maxwidth}]
 	if {$nhyperspace > 0 || $isfat} {
 	    if {$ctxend > $n} break
 	    # work out what to bring back and
 	    # what we want to don't want to send into hyperspace
 	    set room 1
 	    for {set k $numcommits} {$k < $ctxend} {incr k} {
 		set x [lindex $displayorder $k]
 		set i [llsearch $dlist $x]
 		if {$i < 0} {
 		    set i [llength $dlist]
 		    lappend dlist $x
 		}
 		if {[lsearch -exact $nohs $x] < 0} {
 		    lappend nohs $x
 		}
 		if {$reins eq {} && $onscreen($x) < 0 && $room} {
 		    set reins [list $x $i]
 		}
 		set newp {}
 		if {[info exists commitlisted($x)]} {
 		    set right 0
 		    foreach p $parents($x) {
 			if {[llsearch $dlist $p] < 0} {
 			    lappend newp $p
 			    if {[lsearch -exact $nohs $p] < 0} {
 				lappend nohs $p
 			    }
 			    if {$reins eq {} && $onscreen($p) < 0 && $room} {
 				set reins [list $p [expr {$i + $right}]]
 			    }
 			}
 			set right 1
 		    }
 		}
 		set l [lindex $dlist $i]
 		if {[llength $l] == 1} {
 		    set l $newp
 		} else {
 		    set j [lsearch -exact $l $x]
 		    set l [concat [lreplace $l $j $j] $newp]
 		}
 		set dlist [lreplace $dlist $i $i $l]
 		if {$room && $isfat && [llength $newp] <= 1} {
 		    set room 0
 		}
 	    }
 	}
 
 	set dlevel [drawslants $id $reins $nohs]
 	drawcommitline $dlevel
 	if {[clock clicks -milliseconds] >= $nextupdate
 	    && $numcommits >= $ncmupdate} {
 	    doupdate $reading
 	    if {$stopped} break
 	}
     }
 }
 
 # level here is an index in todo
 proc updatetodo {level noshortcut} {
     global ncleft todo nnewparents
     global commitlisted parents onscreen
 
     set id [lindex $todo $level]
     set olds {}
     if {[info exists commitlisted($id)]} {
 	foreach p $parents($id) {
 	    if {[lsearch -exact $olds $p] < 0} {
 		lappend olds $p
 	    }
 	}
     }
     if {!$noshortcut && [llength $olds] == 1} {
 	set p [lindex $olds 0]
 	if {$ncleft($p) == 1 && [lsearch -exact $todo $p] < 0} {
 	    set ncleft($p) 0
 	    set todo [lreplace $todo $level $level $p]
 	    set onscreen($p) 0
 	    set nnewparents($id) 1
 	    return 0
 	}
     }
 
     set todo [lreplace $todo $level $level]
     set i $level
     set n 0
     foreach p $olds {
 	incr ncleft($p) -1
 	set k [lsearch -exact $todo $p]
 	if {$k < 0} {
 	    set todo [linsert $todo $i $p]
 	    set onscreen($p) 0
 	    incr i
 	    incr n
 	}
     }
     set nnewparents($id) $n
 
     return 1
 }
 
 proc decidenext {{noread 0}} {
     global ncleft todo
     global datemode cdate
     global commitinfo
 
     # 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 $k]
 	if {$ncleft($p) == 0} {
 	    if {$datemode} {
 		if {![info exists commitinfo($p)]} {
 		    if {$noread} {
 			return {}
 		    }
 		    readcommit $p
 		}
 		if {$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 "  $p ($ncleft($p))"
 	    }
 	}
 	return -1
     }
 
     return $level
 }
 
 proc drawcommit {id} {
     global phase todo nchildren datemode nextupdate
     global numcommits ncmupdate displayorder todo onscreen
 
     if {$phase != "incrdraw"} {
 	set phase incrdraw
 	set displayorder {}
 	set todo {}
 	initgraph
     }
     if {$nchildren($id) == 0} {
 	lappend todo $id
 	set onscreen($id) 0
     }
     set level [decidenext 1]
     if {$level == {} || $id != [lindex $todo $level]} {
 	return
     }
     while 1 {
 	lappend displayorder [lindex $todo $level]
 	if {[updatetodo $level $datemode]} {
 	    set level [decidenext 1]
 	    if {$level == {}} break
 	}
 	set id [lindex $todo $level]
 	if {![info exists commitlisted($id)]} {
 	    break
 	}
     }
     drawmore 1
 }
 
 proc finishcommits {} {
     global phase
     global canv mainfont ctext maincursor textcursor
 
     if {$phase != "incrdraw"} {
 	$canv delete all
 	$canv create text 3 3 -anchor nw -text "No commits selected" \
 	    -font $mainfont -tags textitems
 	set phase {}
     } else {
 	drawrest
     }
     . config -cursor $maincursor
     settextcursor $textcursor
 }
 
 # Don't change the text pane cursor if it is currently the hand cursor,
 # showing that we are over a sha1 ID link.
 proc settextcursor {c} {
     global ctext curtextcursor
 
     if {[$ctext cget -cursor] == $curtextcursor} {
 	$ctext config -cursor $c
     }
     set curtextcursor $c
 }
 
 proc drawgraph {} {
     global nextupdate startmsecs ncmupdate
     global displayorder onscreen
 
     if {$displayorder == {}} return
     set startmsecs [clock clicks -milliseconds]
     set nextupdate [expr $startmsecs + 100]
     set ncmupdate 1
     initgraph
     foreach id $displayorder {
 	set onscreen($id) 0
     }
     drawmore 0
 }
 
 proc drawrest {} {
     global phase stopped redisplaying selectedline
     global datemode todo displayorder
     global numcommits ncmupdate
     global nextupdate startmsecs
 
     set level [decidenext]
     if {$level >= 0} {
 	set phase drawgraph
 	while 1 {
 	    lappend displayorder [lindex $todo $level]
 	    set hard [updatetodo $level $datemode]
 	    if {$hard} {
 		set level [decidenext]
 		if {$level < 0} break
 	    }
 	}
 	drawmore 0
     }
     set phase {}
     set drawmsecs [expr [clock clicks -milliseconds] - $startmsecs]
     #puts "overall $drawmsecs ms for $numcommits commits"
     if {$redisplaying} {
 	if {$stopped == 0 && [info exists selectedline]} {
 	    selectline $selectedline 0
 	}
 	if {$stopped == 1} {
 	    set stopped 0
 	    after idle drawgraph
 	} else {
 	    set redisplaying 0
 	}
     }
 }
 
 proc findmatches {f} {
     global findtype foundstring foundstrlen
     if {$findtype == "Regexp"} {
 	set matches [regexp -indices -all -inline $foundstring $f]
     } else {
 	if {$findtype == "IgnCase"} {
 	    set str [string tolower $f]
 	} else {
 	    set str $f
 	}
 	set matches {}
 	set i 0
 	while {[set j [string first $foundstring $str $i]] >= 0} {
 	    lappend matches [list $j [expr $j+$foundstrlen-1]]
 	    set i [expr $j + $foundstrlen]
 	}
     }
     return $matches
 }
 
 proc dofind {} {
     global findtype findloc findstring markedmatches commitinfo
     global numcommits lineid linehtag linentag linedtag
     global mainfont namefont canv canv2 canv3 selectedline
     global matchinglines foundstring foundstrlen
 
     stopfindproc
     unmarkmatches
     focus .
     set matchinglines {}
     if {$findloc == "Pickaxe"} {
 	findpatches
 	return
     }
     if {$findtype == "IgnCase"} {
 	set foundstring [string tolower $findstring]
     } else {
 	set foundstring $findstring
     }
     set foundstrlen [string length $findstring]
     if {$foundstrlen == 0} return
     if {$findloc == "Files"} {
 	findfiles
 	return
     }
     if {![info exists selectedline]} {
 	set oldsel -1
     } else {
 	set oldsel $selectedline
     }
     set didsel 0
     set fldtypes {Headline Author Date Committer CDate Comment}
     for {set l 0} {$l < $numcommits} {incr l} {
 	set id $lineid($l)
 	set info $commitinfo($id)
 	set doesmatch 0
 	foreach f $info ty $fldtypes {
 	    if {$findloc != "All fields" && $findloc != $ty} {
 		continue
 	    }
 	    set matches [findmatches $f]
 	    if {$matches == {}} continue
 	    set doesmatch 1
 	    if {$ty == "Headline"} {
 		markmatches $canv $l $f $linehtag($l) $matches $mainfont
 	    } elseif {$ty == "Author"} {
 		markmatches $canv2 $l $f $linentag($l) $matches $namefont
 	    } elseif {$ty == "Date"} {
 		markmatches $canv3 $l $f $linedtag($l) $matches $mainfont
 	    }
 	}
 	if {$doesmatch} {
 	    lappend matchinglines $l
 	    if {!$didsel && $l > $oldsel} {
 		findselectline $l
 		set didsel 1
 	    }
 	}
     }
     if {$matchinglines == {}} {
 	bell
     } elseif {!$didsel} {
 	findselectline [lindex $matchinglines 0]
     }
 }
 
 proc findselectline {l} {
     global findloc commentend ctext
     selectline $l 1
     if {$findloc == "All fields" || $findloc == "Comments"} {
 	# highlight the matches in the comments
 	set f [$ctext get 1.0 $commentend]
 	set matches [findmatches $f]
 	foreach match $matches {
 	    set start [lindex $match 0]
 	    set end [expr [lindex $match 1] + 1]
 	    $ctext tag add found "1.0 + $start c" "1.0 + $end c"
 	}
     }
 }
 
 proc findnext {restart} {
     global matchinglines selectedline
     if {![info exists matchinglines]} {
 	if {$restart} {
 	    dofind
 	}
 	return
     }
     if {![info exists selectedline]} return
     foreach l $matchinglines {
 	if {$l > $selectedline} {
 	    findselectline $l
 	    return
 	}
     }
     bell
 }
 
 proc findprev {} {
     global matchinglines selectedline
     if {![info exists matchinglines]} {
 	dofind
 	return
     }
     if {![info exists selectedline]} return
     set prev {}
     foreach l $matchinglines {
 	if {$l >= $selectedline} break
 	set prev $l
     }
     if {$prev != {}} {
 	findselectline $prev
     } else {
 	bell
     }
 }
 
 proc findlocchange {name ix op} {
     global findloc findtype findtypemenu
     if {$findloc == "Pickaxe"} {
 	set findtype Exact
 	set state disabled
     } else {
 	set state normal
     }
     $findtypemenu entryconf 1 -state $state
     $findtypemenu entryconf 2 -state $state
 }
 
 proc stopfindproc {{done 0}} {
     global findprocpid findprocfile findids
     global ctext findoldcursor phase maincursor textcursor
     global findinprogress
 
     catch {unset findids}
     if {[info exists findprocpid]} {
 	if {!$done} {
 	    catch {exec kill $findprocpid}
 	}
 	catch {close $findprocfile}
 	unset findprocpid
     }
     if {[info exists findinprogress]} {
 	unset findinprogress
 	if {$phase != "incrdraw"} {
 	    . config -cursor $maincursor
 	    settextcursor $textcursor
 	}
     }
 }
 
 proc findpatches {} {
     global findstring selectedline numcommits
     global findprocpid findprocfile
     global finddidsel ctext lineid findinprogress
     global findinsertpos
     global env
 
     if {$numcommits == 0} return
 
     # make a list of all the ids to search, starting at the one
     # after the selected line (if any)
     if {[info exists selectedline]} {
 	set l $selectedline
     } else {
 	set l -1
     }
     set inputids {}
     for {set i 0} {$i < $numcommits} {incr i} {
 	if {[incr l] >= $numcommits} {
 	    set l 0
 	}
 	append inputids $lineid($l) "\n"
     }
 
     if {[catch {
 	set f [open [list | $env(HG) --config ui.report_untrusted=false debug-diff-tree --stdin -s -r -S$findstring << $inputids] r]
     } err]} {
 	error_popup "Error starting search process: $err"
 	return
     }
 
     set findinsertpos end
     set findprocfile $f
     set findprocpid [pid $f]
     fconfigure $f -blocking 0
     fileevent $f readable readfindproc
     set finddidsel 0
     . config -cursor watch
     settextcursor watch
     set findinprogress 1
 }
 
 proc readfindproc {} {
     global findprocfile finddidsel
     global idline matchinglines findinsertpos
 
     set n [gets $findprocfile line]
     if {$n < 0} {
 	if {[eof $findprocfile]} {
 	    stopfindproc 1
 	    if {!$finddidsel} {
 		bell
 	    }
 	}
 	return
     }
     if {![regexp {^[0-9a-f]{12}} $line id]} {
 	error_popup "Can't parse git-diff-tree output: $line"
 	stopfindproc
 	return
     }
     if {![info exists idline($id)]} {
 	puts stderr "spurious id: $id"
 	return
     }
     set l $idline($id)
     insertmatch $l $id
 }
 
 proc insertmatch {l id} {
     global matchinglines findinsertpos finddidsel
 
     if {$findinsertpos == "end"} {
 	if {$matchinglines != {} && $l < [lindex $matchinglines 0]} {
 	    set matchinglines [linsert $matchinglines 0 $l]
 	    set findinsertpos 1
 	} else {
 	    lappend matchinglines $l
 	}
     } else {
 	set matchinglines [linsert $matchinglines $findinsertpos $l]
 	incr findinsertpos
     }
     markheadline $l $id
     if {!$finddidsel} {
 	findselectline $l
 	set finddidsel 1
     }
 }
 
 proc findfiles {} {
     global selectedline numcommits lineid ctext
     global ffileline finddidsel parents nparents
     global findinprogress findstartline findinsertpos
     global treediffs fdiffids fdiffsneeded fdiffpos
     global findmergefiles
     global env
 
     if {$numcommits == 0} return
 
     if {[info exists selectedline]} {
 	set l [expr {$selectedline + 1}]
     } else {
 	set l 0
     }
     set ffileline $l
     set findstartline $l
     set diffsneeded {}
     set fdiffsneeded {}
     while 1 {
 	set id $lineid($l)
 	if {$findmergefiles || $nparents($id) == 1} {
 	    foreach p $parents($id) {
 		if {![info exists treediffs([list $id $p])]} {
 		    append diffsneeded "$id $p\n"
 		    lappend fdiffsneeded [list $id $p]
 		}
 	    }
 	}
 	if {[incr l] >= $numcommits} {
 	    set l 0
 	}
 	if {$l == $findstartline} break
     }
 
     # start off a git-diff-tree process if needed
     if {$diffsneeded ne {}} {
 	if {[catch {
 	    set df [open [list | $env(HG) --config ui.report_untrusted=false debug-diff-tree -r --stdin << $diffsneeded] r]
 	} err ]} {
 	    error_popup "Error starting search process: $err"
 	    return
 	}
 	catch {unset fdiffids}
 	set fdiffpos 0
 	fconfigure $df -blocking 0
 	fileevent $df readable [list readfilediffs $df]
     }
 
     set finddidsel 0
     set findinsertpos end
     set id $lineid($l)
     set p [lindex $parents($id) 0]
     . config -cursor watch
     settextcursor watch
     set findinprogress 1
     findcont [list $id $p]
     update
 }
 
 proc readfilediffs {df} {
     global findids fdiffids fdiffs
 
     set n [gets $df line]
     if {$n < 0} {
 	if {[eof $df]} {
 	    donefilediff
 	    if {[catch {close $df} err]} {
 		stopfindproc
 		bell
 		error_popup "Error in hg debug-diff-tree: $err"
 	    } elseif {[info exists findids]} {
 		set ids $findids
 		stopfindproc
 		bell
 		error_popup "Couldn't find diffs for {$ids}"
 	    }
 	}
 	return
     }
     if {[regexp {^([0-9a-f]{12}) \(from ([0-9a-f]{12})\)} $line match id p]} {
 	# start of a new string of diffs
 	donefilediff
 	set fdiffids [list $id $p]
 	set fdiffs {}
     } elseif {[string match ":*" $line]} {
 	lappend fdiffs [lindex $line 5]
     }
 }
 
 proc donefilediff {} {
     global fdiffids fdiffs treediffs findids
     global fdiffsneeded fdiffpos
 
     if {[info exists fdiffids]} {
 	while {[lindex $fdiffsneeded $fdiffpos] ne $fdiffids
 	       && $fdiffpos < [llength $fdiffsneeded]} {
 	    # git-diff-tree doesn't output anything for a commit
 	    # which doesn't change anything
 	    set nullids [lindex $fdiffsneeded $fdiffpos]
 	    set treediffs($nullids) {}
 	    if {[info exists findids] && $nullids eq $findids} {
 		unset findids
 		findcont $nullids
 	    }
 	    incr fdiffpos
 	}
 	incr fdiffpos
 
 	if {![info exists treediffs($fdiffids)]} {
 	    set treediffs($fdiffids) $fdiffs
 	}
 	if {[info exists findids] && $fdiffids eq $findids} {
 	    unset findids
 	    findcont $fdiffids
 	}
     }
 }
 
 proc findcont {ids} {
     global findids treediffs parents nparents
     global ffileline findstartline finddidsel
     global lineid numcommits matchinglines findinprogress
     global findmergefiles
 
     set id [lindex $ids 0]
     set p [lindex $ids 1]
     set pi [lsearch -exact $parents($id) $p]
     set l $ffileline
     while 1 {
 	if {$findmergefiles || $nparents($id) == 1} {
 	    if {![info exists treediffs($ids)]} {
 		set findids $ids
 		set ffileline $l
 		return
 	    }
 	    set doesmatch 0
 	    foreach f $treediffs($ids) {
 		set x [findmatches $f]
 		if {$x != {}} {
 		    set doesmatch 1
 		    break
 		}
 	    }
 	    if {$doesmatch} {
 		insertmatch $l $id
 		set pi $nparents($id)
 	    }
 	} else {
 	    set pi $nparents($id)
 	}
 	if {[incr pi] >= $nparents($id)} {
 	    set pi 0
 	    if {[incr l] >= $numcommits} {
 		set l 0
 	    }
 	    if {$l == $findstartline} break
 	    set id $lineid($l)
 	}
 	set p [lindex $parents($id) $pi]
 	set ids [list $id $p]
     }
     stopfindproc
     if {!$finddidsel} {
 	bell
     }
 }
 
 # mark a commit as matching by putting a yellow background
 # behind the headline
 proc markheadline {l id} {
     global canv mainfont linehtag commitinfo
 
     set bbox [$canv bbox $linehtag($l)]
     set t [$canv create rect $bbox -outline {} -tags matches -fill yellow]
     $canv lower $t
 }
 
 # mark the bits of a headline, author or date that match a find string
 proc markmatches {canv l str tag matches font} {
     set bbox [$canv bbox $tag]
     set x0 [lindex $bbox 0]
     set y0 [lindex $bbox 1]
     set y1 [lindex $bbox 3]
     foreach match $matches {
 	set start [lindex $match 0]
 	set end [lindex $match 1]
 	if {$start > $end} continue
 	set xoff [font measure $font [string range $str 0 [expr $start-1]]]
 	set xlen [font measure $font [string range $str 0 [expr $end]]]
 	set t [$canv create rect [expr $x0+$xoff] $y0 [expr $x0+$xlen+2] $y1 \
 		   -outline {} -tags matches -fill yellow]
 	$canv lower $t
     }
 }
 
 proc unmarkmatches {} {
     global matchinglines findids
     allcanvs delete matches
     catch {unset matchinglines}
     catch {unset findids}
 }
 
 proc selcanvline {w x y} {
     global canv canvy0 ctext linespc
     global lineid linehtag linentag linedtag rowtextx
     set ymax [lindex [$canv cget -scrollregion] 3]
     if {$ymax == {}} return
     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 {$w eq $canv} {
 	if {![info exists rowtextx($l)] || $x < $rowtextx($l)} return
     }
     unmarkmatches
     selectline $l 1
 }
 
 proc commit_descriptor {p} {
     global commitinfo
     set l "..."
     if {[info exists commitinfo($p)]} {
 	set l [lindex $commitinfo($p) 0]
 	set r [lindex $commitinfo($p) 6]
     }
     return "$r:$p ($l)"
 }
 
 # append some text to the ctext widget, and make any SHA1 ID
 # that we know about be a clickable link.
 proc appendwithlinks {text} {
     global ctext idline linknum
 
     set start [$ctext index "end - 1c"]
     $ctext insert end $text
     $ctext insert end "\n"
     set links [regexp -indices -all -inline {[0-9a-f]{12}} $text]
     foreach l $links {
 	set s [lindex $l 0]
 	set e [lindex $l 1]
 	set linkid [string range $text $s $e]
 	if {![info exists idline($linkid)]} continue
 	incr e
 	$ctext tag add link "$start + $s c" "$start + $e c"
 	$ctext tag add link$linknum "$start + $s c" "$start + $e c"
 	$ctext tag bind link$linknum <1> [list selectline $idline($linkid) 1]
 	incr linknum
     }
     $ctext tag conf link -foreground blue -underline 1
     $ctext tag bind link <Enter> { %W configure -cursor hand2 }
     $ctext tag bind link <Leave> { %W configure -cursor $curtextcursor }
 }
 
 proc selectline {l isnew} {
     global canv canv2 canv3 ctext commitinfo selectedline
     global lineid linehtag linentag linedtag
     global canvy0 linespc parents nparents children
     global cflist currentid sha1entry
     global commentend idtags idline linknum
 
     $canv delete hover
     normalline
     if {![info exists lineid($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 * $linespc}]
     set ymax [lindex [$canv cget -scrollregion] 3]
     set ytop [expr {$y - $linespc - 1}]
     set ybot [expr {$y + $linespc + 1}]
     set wnow [$canv yview]
     set wtop [expr [lindex $wnow 0] * $ymax]
     set wbot [expr [lindex $wnow 1] * $ymax]
     set wh [expr {$wbot - $wtop}]
     set newtop $wtop
     if {$ytop < $wtop} {
 	if {$ybot < $wtop} {
 	    set newtop [expr {$y - $wh / 2.0}]
 	} else {
 	    set newtop $ytop
 	    if {$newtop > $wtop - $linespc} {
 		set newtop [expr {$wtop - $linespc}]
 	    }
 	}
     } elseif {$ybot > $wbot} {
 	if {$ytop > $wbot} {
 	    set newtop [expr {$y - $wh / 2.0}]
 	} else {
 	    set newtop [expr {$ybot - $wh}]
 	    if {$newtop < $wtop + $linespc} {
 		set newtop [expr {$wtop + $linespc}]
 	    }
 	}
     }
     if {$newtop != $wtop} {
 	if {$newtop < 0} {
 	    set newtop 0
 	}
 	allcanvs yview moveto [expr $newtop * 1.0 / $ymax]
     }
 
     if {$isnew} {
 	addtohistory [list selectline $l 0]
     }
 
     set selectedline $l
 
     set id $lineid($l)
     set currentid $id
     $sha1entry delete 0 end
     $sha1entry insert 0 $id
     $sha1entry selection from 0
     $sha1entry selection to end
 
     $ctext conf -state normal
     $ctext delete 0.0 end
     set linknum 0
     $ctext mark set fmark.0 0.0
     $ctext mark gravity fmark.0 left
     set info $commitinfo($id)
     $ctext insert end "Revision: [lindex $info 6]\n"
     $ctext insert end "Author: [lindex $info 1]  [lindex $info 2]\n"
     $ctext insert end "Committer: [lindex $info 3]  [lindex $info 4]\n"
     if {[info exists idtags($id)]} {
 	$ctext insert end "Tags:"
 	foreach tag $idtags($id) {
 	    $ctext insert end " $tag"
 	}
 	$ctext insert end "\n"
     }
 
     set comment {}
     if {[info exists parents($id)]} {
 	foreach p $parents($id) {
 	    append comment "Parent: [commit_descriptor $p]\n"
 	}
     }
     if {[info exists children($id)]} {
 	foreach c $children($id) {
 	    append comment "Child:  [commit_descriptor $c]\n"
 	}
     }
     append comment "\n"
     append comment [lindex $info 5]
 
     # make anything that looks like a SHA1 ID be a clickable link
     appendwithlinks $comment
 
     $ctext tag delete Comments
     $ctext tag remove found 1.0 end
     $ctext conf -state disabled
     set commentend [$ctext index "end - 1c"]
 
     $cflist delete 0 end
     $cflist insert end "Comments"
     if {$nparents($id) == 1} {
 	startdiff [concat $id $parents($id)]
     } elseif {$nparents($id) > 1} {
 	mergediff $id
     }
 }
 
 proc selnextline {dir} {
     global selectedline
     if {![info exists selectedline]} return
     set l [expr $selectedline + $dir]
     unmarkmatches
     selectline $l 1
 }
 
 proc unselectline {} {
     global selectedline
 
     catch {unset selectedline}
     allcanvs delete secsel
 }
 
 proc addtohistory {cmd} {
     global history historyindex
 
     if {$historyindex > 0
 	&& [lindex $history [expr {$historyindex - 1}]] == $cmd} {
 	return
     }
 
     if {$historyindex < [llength $history]} {
 	set history [lreplace $history $historyindex end $cmd]
     } else {
 	lappend history $cmd
     }
     incr historyindex
     if {$historyindex > 1} {
 	.ctop.top.bar.leftbut conf -state normal
     } else {
 	.ctop.top.bar.leftbut conf -state disabled
     }
     .ctop.top.bar.rightbut conf -state disabled
 }
 
 proc goback {} {
     global history historyindex
 
     if {$historyindex > 1} {
 	incr historyindex -1
 	set cmd [lindex $history [expr {$historyindex - 1}]]
 	eval $cmd
 	.ctop.top.bar.rightbut conf -state normal
     }
     if {$historyindex <= 1} {
 	.ctop.top.bar.leftbut conf -state disabled
     }
 }
 
 proc goforw {} {
     global history historyindex
 
     if {$historyindex < [llength $history]} {
 	set cmd [lindex $history $historyindex]
 	incr historyindex
 	eval $cmd
 	.ctop.top.bar.leftbut conf -state normal
     }
     if {$historyindex >= [llength $history]} {
 	.ctop.top.bar.rightbut conf -state disabled
     }
 }
 
 proc mergediff {id} {
     global parents diffmergeid diffmergegca mergefilelist diffpindex
 
     set diffmergeid $id
     set diffpindex -1
     set diffmergegca [findgca $parents($id)]
     if {[info exists mergefilelist($id)]} {
 	if {$mergefilelist($id) ne {}} {
 	    showmergediff
 	}
     } else {
 	contmergediff {}
     }
 }
 
 proc findgca {ids} {
     global env
     set gca {}
     foreach id $ids {
 	if {$gca eq {}} {
 	    set gca $id
 	} else {
 	    if {[catch {
 		set gca [exec $env(HG) --config ui.report_untrusted=false debug-merge-base $gca $id]
 	    } err]} {
 		return {}
 	    }
 	}
     }
     return $gca
 }
 
 proc contmergediff {ids} {
     global diffmergeid diffpindex parents nparents diffmergegca
     global treediffs mergefilelist diffids treepending
 
     # diff the child against each of the parents, and diff
     # each of the parents against the GCA.
     while 1 {
 	if {[lindex $ids 0] == $diffmergeid && $diffmergegca ne {}} {
 	    set ids [list [lindex $ids 1] $diffmergegca]
 	} else {
 	    if {[incr diffpindex] >= $nparents($diffmergeid)} break
 	    set p [lindex $parents($diffmergeid) $diffpindex]
 	    set ids [list $diffmergeid $p]
 	}
 	if {![info exists treediffs($ids)]} {
 	    set diffids $ids
 	    if {![info exists treepending]} {
 		gettreediffs $ids
 	    }
 	    return
 	}
     }
 
     # If a file in some parent is different from the child and also
     # different from the GCA, then it's interesting.
     # If we don't have a GCA, then a file is interesting if it is
     # different from the child in all the parents.
     if {$diffmergegca ne {}} {
 	set files {}
 	foreach p $parents($diffmergeid) {
 	    set gcadiffs $treediffs([list $p $diffmergegca])
 	    foreach f $treediffs([list $diffmergeid $p]) {
 		if {[lsearch -exact $files $f] < 0
 		    && [lsearch -exact $gcadiffs $f] >= 0} {
 		    lappend files $f
 		}
 	    }
 	}
 	set files [lsort $files]
     } else {
 	set p [lindex $parents($diffmergeid) 0]
 	set files $treediffs([list $diffmergeid $p])
 	for {set i 1} {$i < $nparents($diffmergeid) && $files ne {}} {incr i} {
 	    set p [lindex $parents($diffmergeid) $i]
 	    set df $treediffs([list $diffmergeid $p])
 	    set nf {}
 	    foreach f $files {
 		if {[lsearch -exact $df $f] >= 0} {
 		    lappend nf $f
 		}
 	    }
 	    set files $nf
 	}
     }
 
     set mergefilelist($diffmergeid) $files
     if {$files ne {}} {
 	showmergediff
     }
 }
 
 proc showmergediff {} {
     global cflist diffmergeid mergefilelist parents
     global diffopts diffinhunk currentfile currenthunk filelines
     global diffblocked groupfilelast mergefds groupfilenum grouphunks
     global env
 
     set files $mergefilelist($diffmergeid)
     foreach f $files {
 	$cflist insert end $f
     }
     set env(GIT_DIFF_OPTS) $diffopts
     set flist {}
     catch {unset currentfile}
     catch {unset currenthunk}
     catch {unset filelines}
     catch {unset groupfilenum}
     catch {unset grouphunks}
     set groupfilelast -1
     foreach p $parents($diffmergeid) {
 	set cmd [list | $env(HG) --config ui.report_untrusted=false debug-diff-tree -p $p $diffmergeid]
 	set cmd [concat $cmd $mergefilelist($diffmergeid)]
 	if {[catch {set f [open $cmd r]} err]} {
 	    error_popup "Error getting diffs: $err"
 	    foreach f $flist {
 		catch {close $f}
 	    }
 	    return
 	}
 	lappend flist $f
 	set ids [list $diffmergeid $p]
 	set mergefds($ids) $f
 	set diffinhunk($ids) 0
 	set diffblocked($ids) 0
 	fconfigure $f -blocking 0
 	fileevent $f readable [list getmergediffline $f $ids $diffmergeid]
     }
 }
 
 proc getmergediffline {f ids id} {
     global diffmergeid diffinhunk diffoldlines diffnewlines
     global currentfile currenthunk
     global diffoldstart diffnewstart diffoldlno diffnewlno
     global diffblocked mergefilelist
     global noldlines nnewlines difflcounts filelines
 
     set n [gets $f line]
     if {$n < 0} {
 	if {![eof $f]} return
     }
 
     if {!([info exists diffmergeid] && $diffmergeid == $id)} {
 	if {$n < 0} {
 	    close $f
 	}
 	return
     }
 
     if {$diffinhunk($ids) != 0} {
 	set fi $currentfile($ids)
 	if {$n > 0 && [regexp {^[-+ \\]} $line match]} {
 	    # continuing an existing hunk
 	    set line [string range $line 1 end]
 	    set p [lindex $ids 1]
 	    if {$match eq "-" || $match eq " "} {
 		set filelines($p,$fi,$diffoldlno($ids)) $line
 		incr diffoldlno($ids)
 	    }
 	    if {$match eq "+" || $match eq " "} {
 		set filelines($id,$fi,$diffnewlno($ids)) $line
 		incr diffnewlno($ids)
 	    }
 	    if {$match eq " "} {
 		if {$diffinhunk($ids) == 2} {
 		    lappend difflcounts($ids) \
 			[list $noldlines($ids) $nnewlines($ids)]
 		    set noldlines($ids) 0
 		    set diffinhunk($ids) 1
 		}
 		incr noldlines($ids)
 	    } elseif {$match eq "-" || $match eq "+"} {
 		if {$diffinhunk($ids) == 1} {
 		    lappend difflcounts($ids) [list $noldlines($ids)]
 		    set noldlines($ids) 0
 		    set nnewlines($ids) 0
 		    set diffinhunk($ids) 2
 		}
 		if {$match eq "-"} {
 		    incr noldlines($ids)
 		} else {
 		    incr nnewlines($ids)
 		}
 	    }
 	    # and if it's \ No newline at end of line, then what?
 	    return
 	}
 	# end of a hunk
 	if {$diffinhunk($ids) == 1 && $noldlines($ids) != 0} {
 	    lappend difflcounts($ids) [list $noldlines($ids)]
 	} elseif {$diffinhunk($ids) == 2
 		  && ($noldlines($ids) != 0 || $nnewlines($ids) != 0)} {
 	    lappend difflcounts($ids) [list $noldlines($ids) $nnewlines($ids)]
 	}
 	set currenthunk($ids) [list $currentfile($ids) \
 				   $diffoldstart($ids) $diffnewstart($ids) \
 				   $diffoldlno($ids) $diffnewlno($ids) \
 				   $difflcounts($ids)]
 	set diffinhunk($ids) 0
 	# -1 = need to block, 0 = unblocked, 1 = is blocked
 	set diffblocked($ids) -1
 	processhunks
 	if {$diffblocked($ids) == -1} {
 	    fileevent $f readable {}
 	    set diffblocked($ids) 1
 	}
     }
 
     if {$n < 0} {
 	# eof
 	if {!$diffblocked($ids)} {
 	    close $f
 	    set currentfile($ids) [llength $mergefilelist($diffmergeid)]
 	    set currenthunk($ids) [list $currentfile($ids) 0 0 0 0 {}]
 	    processhunks
 	}
     } elseif {[regexp {^diff --git a/(.*) b/} $line match fname]} {
 	# start of a new file
 	set currentfile($ids) \
 	    [lsearch -exact $mergefilelist($diffmergeid) $fname]
     } elseif {[regexp {^@@ -([0-9]+),([0-9]+) \+([0-9]+),([0-9]+) @@(.*)} \
 		   $line match f1l f1c f2l f2c rest]} {
 	if {[info exists currentfile($ids)] && $currentfile($ids) >= 0} {
 	    # start of a new hunk
 	    if {$f1l == 0 && $f1c == 0} {
 		set f1l 1
 	    }
 	    if {$f2l == 0 && $f2c == 0} {
 		set f2l 1
 	    }
 	    set diffinhunk($ids) 1
 	    set diffoldstart($ids) $f1l
 	    set diffnewstart($ids) $f2l
 	    set diffoldlno($ids) $f1l
 	    set diffnewlno($ids) $f2l
 	    set difflcounts($ids) {}
 	    set noldlines($ids) 0
 	    set nnewlines($ids) 0
 	}
     }
 }
 
 proc processhunks {} {
     global diffmergeid parents nparents currenthunk
     global mergefilelist diffblocked mergefds
     global grouphunks grouplinestart grouplineend groupfilenum
 
     set nfiles [llength $mergefilelist($diffmergeid)]
     while 1 {
 	set fi $nfiles
 	set lno 0
 	# look for the earliest hunk
 	foreach p $parents($diffmergeid) {
 	    set ids [list $diffmergeid $p]
 	    if {![info exists currenthunk($ids)]} return
 	    set i [lindex $currenthunk($ids) 0]
 	    set l [lindex $currenthunk($ids) 2]
 	    if {$i < $fi || ($i == $fi && $l < $lno)} {
 		set fi $i
 		set lno $l
 		set pi $p
 	    }
 	}
 
 	if {$fi < $nfiles} {
 	    set ids [list $diffmergeid $pi]
 	    set hunk $currenthunk($ids)
 	    unset currenthunk($ids)
 	    if {$diffblocked($ids) > 0} {
 		fileevent $mergefds($ids) readable \
 		    [list getmergediffline $mergefds($ids) $ids $diffmergeid]
 	    }
 	    set diffblocked($ids) 0
 
 	    if {[info exists groupfilenum] && $groupfilenum == $fi
 		&& $lno <= $grouplineend} {
 		# add this hunk to the pending group
 		lappend grouphunks($pi) $hunk
 		set endln [lindex $hunk 4]
 		if {$endln > $grouplineend} {
 		    set grouplineend $endln
 		}
 		continue
 	    }
 	}
 
 	# succeeding stuff doesn't belong in this group, so
 	# process the group now
 	if {[info exists groupfilenum]} {
 	    processgroup
 	    unset groupfilenum
 	    unset grouphunks
 	}
 
 	if {$fi >= $nfiles} break
 
 	# start a new group
 	set groupfilenum $fi
 	set grouphunks($pi) [list $hunk]
 	set grouplinestart $lno
 	set grouplineend [lindex $hunk 4]
     }
 }
 
 proc processgroup {} {
     global groupfilelast groupfilenum difffilestart
     global mergefilelist diffmergeid ctext filelines
     global parents diffmergeid diffoffset
     global grouphunks grouplinestart grouplineend nparents
     global mergemax
 
     $ctext conf -state normal
     set id $diffmergeid
     set f $groupfilenum
     if {$groupfilelast != $f} {
 	$ctext insert end "\n"
 	set here [$ctext index "end - 1c"]
 	set difffilestart($f) $here
 	set mark fmark.[expr {$f + 1}]
 	$ctext mark set $mark $here
 	$ctext mark gravity $mark left
 	set header [lindex $mergefilelist($id) $f]
 	set l [expr {(78 - [string length $header]) / 2}]
 	set pad [string range "----------------------------------------" 1 $l]
 	$ctext insert end "$pad $header $pad\n" filesep
 	set groupfilelast $f
 	foreach p $parents($id) {
 	    set diffoffset($p) 0
 	}
     }
 
     $ctext insert end "@@" msep
     set nlines [expr {$grouplineend - $grouplinestart}]
     set events {}
     set pnum 0
     foreach p $parents($id) {
 	set startline [expr {$grouplinestart + $diffoffset($p)}]
 	set ol $startline
 	set nl $grouplinestart
 	if {[info exists grouphunks($p)]} {
 	    foreach h $grouphunks($p) {
 		set l [lindex $h 2]
 		if {$nl < $l} {
 		    for {} {$nl < $l} {incr nl} {
 			set filelines($p,$f,$ol) $filelines($id,$f,$nl)
 			incr ol
 		    }
 		}
 		foreach chunk [lindex $h 5] {
 		    if {[llength $chunk] == 2} {
 			set olc [lindex $chunk 0]
 			set nlc [lindex $chunk 1]
 			set nnl [expr {$nl + $nlc}]
 			lappend events [list $nl $nnl $pnum $olc $nlc]
 			incr ol $olc
 			set nl $nnl
 		    } else {
 			incr ol [lindex $chunk 0]
 			incr nl [lindex $chunk 0]
 		    }
 		}
 	    }
 	}
 	if {$nl < $grouplineend} {
 	    for {} {$nl < $grouplineend} {incr nl} {
 		set filelines($p,$f,$ol) $filelines($id,$f,$nl)
 		incr ol
 	    }
 	}
 	set nlines [expr {$ol - $startline}]
 	$ctext insert end " -$startline,$nlines" msep
 	incr pnum
     }
 
     set nlines [expr {$grouplineend - $grouplinestart}]
     $ctext insert end " +$grouplinestart,$nlines @@\n" msep
 
     set events [lsort -integer -index 0 $events]
     set nevents [llength $events]
     set nmerge $nparents($diffmergeid)
     set l $grouplinestart
     for {set i 0} {$i < $nevents} {set i $j} {
 	set nl [lindex $events $i 0]
 	while {$l < $nl} {
 	    $ctext insert end " $filelines($id,$f,$l)\n"
 	    incr l
 	}
 	set e [lindex $events $i]
 	set enl [lindex $e 1]
 	set j $i
 	set active {}
 	while 1 {
 	    set pnum [lindex $e 2]
 	    set olc [lindex $e 3]
 	    set nlc [lindex $e 4]
 	    if {![info exists delta($pnum)]} {
 		set delta($pnum) [expr {$olc - $nlc}]
 		lappend active $pnum
 	    } else {
 		incr delta($pnum) [expr {$olc - $nlc}]
 	    }
 	    if {[incr j] >= $nevents} break
 	    set e [lindex $events $j]
 	    if {[lindex $e 0] >= $enl} break
 	    if {[lindex $e 1] > $enl} {
 		set enl [lindex $e 1]
 	    }
 	}
 	set nlc [expr {$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 < $mergemax} {
 			lappend ncol m$pnum
 		    } else {
 			lappend ncol mmax
 		    }
 		    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)] || $pnum == $bestpn} continue
 	    set olc [expr {$nlc + $delta($pnum)}]
 	    set ol [expr {$l + $diffoffset($p)}]
 	    incr diffoffset($p) $delta($pnum)
 	    unset delta($pnum)
 	    for {} {$olc > 0} {incr olc -1} {
 		$ctext insert end "-$filelines($p,$f,$ol)\n" m$pnum
 		incr ol
 	    }
 	}
 	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" $ncol
 	}
     }
     while {$l < $grouplineend} {
 	$ctext insert end " $filelines($id,$f,$l)\n"
 	incr l
     }
     $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
 
     set diffids $ids
     catch {unset diffmergeid}
     if {![info exists treediffs($ids)]} {
 	if {![info exists treepending]} {
 	    gettreediffs $ids
 	}
     } else {
 	addtocflist $ids
     }
 }
 
 proc addtocflist {ids} {
     global treediffs cflist
     foreach f $treediffs($ids) {
 	$cflist insert end $f
     }
     getblobdiffs $ids
 }
 
 proc gettreediffs {ids} {
     global treediff parents treepending env
     set treepending $ids
     set treediff {}
     set id [lindex $ids 0]
     set p [lindex $ids 1]
     if [catch {set gdtf [open "|{$env(HG)} --config ui.report_untrusted=false debug-diff-tree -r $p $id" r]}] return
     fconfigure $gdtf -blocking 0
     fileevent $gdtf readable [list gettreediffline $gdtf $ids]
 }
 
 proc gettreediffline {gdtf ids} {
     global treediff treediffs treepending diffids diffmergeid
 
     set n [gets $gdtf line]
     if {$n < 0} {
 	if {![eof $gdtf]} return
 	close $gdtf
 	set treediffs($ids) $treediff
 	unset treepending
 	if {$ids != $diffids} {
 	    gettreediffs $diffids
 	} else {
 	    if {[info exists diffmergeid]} {
 		contmergediff $ids
 	    } else {
 		addtocflist $ids
 	    }
 	}
 	return
     }
     set tab1 [expr [string first "\t" $line] + 1]
     set tab2 [expr [string first "\t" $line $tab1] - 1]
     set file [string range $line $tab1 $tab2]
     lappend treediff $file
 }
 
 proc getblobdiffs {ids} {
     global diffopts blobdifffd diffids env curdifftag curtagstart
     global difffilestart nextupdate diffinhdr treediffs
 
     set id [lindex $ids 0]
     set p [lindex $ids 1]
     set env(GIT_DIFF_OPTS) $diffopts
     set cmd [list | $env(HG) --config ui.report_untrusted=false debug-diff-tree -r -p -C $p $id]
     if {[catch {set bdf [open $cmd r]} err]} {
 	puts "error getting diffs: $err"
 	return
     }
     set diffinhdr 0
     fconfigure $bdf -blocking 0
     set blobdifffd($ids) $bdf
     set curdifftag Comments
     set curtagstart 0.0
     catch {unset difffilestart}
     fileevent $bdf readable [list getblobdiffline $bdf $diffids]
     set nextupdate [expr {[clock clicks -milliseconds] + 100}]
 }
 
 proc getblobdiffline {bdf ids} {
     global diffids blobdifffd ctext curdifftag curtagstart
     global diffnexthead diffnextnote difffilestart
     global nextupdate diffinhdr treediffs
     global gaudydiff
 
     set n [gets $bdf line]
     if {$n < 0} {
 	if {[eof $bdf]} {
 	    close $bdf
 	    if {$ids == $diffids && $bdf == $blobdifffd($ids)} {
 		$ctext tag add $curdifftag $curtagstart end
 	    }
 	}
 	return
     }
     if {$ids != $diffids || $bdf != $blobdifffd($ids)} {
 	return
     }
     regsub -all "\r" $line "" line
     $ctext conf -state normal
     if {[regexp {^diff --git a/(.*) b/(.*)} $line match fname newname]} {
 	# start of a new file
 	$ctext insert end "\n"
 	$ctext tag add $curdifftag $curtagstart end
 	set curtagstart [$ctext index "end - 1c"]
 	set header $newname
 	set here [$ctext index "end - 1c"]
 	set i [lsearch -exact $treediffs($diffids) $fname]
 	if {$i >= 0} {
 	    set difffilestart($i) $here
 	    incr i
 	    $ctext mark set fmark.$i $here
 	    $ctext mark gravity fmark.$i left
 	}
 	if {$newname != $fname} {
 	    set i [lsearch -exact $treediffs($diffids) $newname]
 	    if {$i >= 0} {
 		set difffilestart($i) $here
 		incr i
 		$ctext mark set fmark.$i $here
 		$ctext mark gravity fmark.$i left
 	    }
 	}
 	set curdifftag "f:$fname"
 	$ctext tag delete $curdifftag
 	set l [expr {(78 - [string length $header]) / 2}]
 	set pad [string range "----------------------------------------" 1 $l]
 	$ctext insert end "$pad $header $pad\n" filesep
 	set diffinhdr 1
     } elseif {[regexp {^(---|\+\+\+)} $line]} {
 	set diffinhdr 0
     } elseif {[regexp {^@@ -([0-9]+),([0-9]+) \+([0-9]+),([0-9]+) @@(.*)} \
 		   $line match f1l f1c f2l f2c rest]} {
 	if {$gaudydiff} {
 	    $ctext insert end "\t" hunksep
 	    $ctext insert end "    $f1l    " d0 "    $f2l    " d1
 	    $ctext insert end "    $rest \n" hunksep
 	} else {
 	    $ctext insert end "$line\n" hunksep
 	}
 	set diffinhdr 0
     } else {
 	set x [string range $line 0 0]
 	if {$x == "-" || $x == "+"} {
 	    set tag [expr {$x == "+"}]
 	    if {$gaudydiff} {
 		set line [string range $line 1 end]
 	    }
 	    $ctext insert end "$line\n" d$tag
 	} elseif {$x == " "} {
 	    if {$gaudydiff} {
 		set line [string range $line 1 end]
 	    }
 	    $ctext insert end "$line\n"
 	} elseif {$diffinhdr || $x == "\\"} {
 	    # e.g. "\ No newline at end of file"
 	    $ctext insert end "$line\n" filesep
 	} elseif  {$line != ""} {
 	    # Something else we don't recognize
 	    if {$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
     if {[clock clicks -milliseconds] >= $nextupdate} {
 	incr nextupdate 100
 	fileevent $bdf readable {}
 	update
 	fileevent $bdf readable "getblobdiffline $bdf {$ids}"
     }
 }
 
 proc nextfile {} {
     global difffilestart ctext
     set here [$ctext index @0,0]
     for {set i 0} {[info exists difffilestart($i)]} {incr i} {
 	if {[$ctext compare $difffilestart($i) > $here]} {
 	    if {![info exists pos]
 		|| [$ctext compare $difffilestart($i) < $pos]} {
 		set pos $difffilestart($i)
 	    }
 	}
     }
     if {[info exists pos]} {
 	$ctext yview $pos
     }
 }
 
 proc listboxsel {} {
     global ctext cflist currentid
     if {![info exists currentid]} return
     set sel [lsort [$cflist curselection]]
     if {$sel eq {}} return
     set first [lindex $sel 0]
     catch {$ctext yview fmark.$first}
 }
 
 proc setcoords {} {
     global linespc charspc canvx0 canvy0 mainfont
     global xspc1 xspc2 lthickness
 
     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 * $linespc]
     set lthickness [expr {int($linespc / 9) + 1}]
     set xspc1(0) $linespc
     set xspc2 $linespc
 }
 
 proc redisplay {} {
     global stopped redisplaying phase
     if {$stopped > 1} return
     if {$phase == "getcommits"} return
     set redisplaying 1
     if {$phase == "drawgraph" || $phase == "incrdraw"} {
 	set stopped 1
     } else {
 	drawgraph
     }
 }
 
 proc incrfont {inc} {
     global mainfont namefont textfont ctext canv phase
     global stopped entries
     unmarkmatches
     set mainfont [lreplace $mainfont 1 1 [expr {[lindex $mainfont 1] + $inc}]]
     set namefont [lreplace $namefont 1 1 [expr {[lindex $namefont 1] + $inc}]]
     set textfont [lreplace $textfont 1 1 [expr {[lindex $textfont 1] + $inc}]]
     setcoords
     $ctext conf -font $textfont
     $ctext tag conf filesep -font [concat $textfont bold]
     foreach e $entries {
 	$e conf -font $mainfont
     }
     if {$phase == "getcommits"} {
 	$canv itemconf textitems -font $mainfont
     }
     redisplay
 }
 
 proc clearsha1 {} {
     global sha1entry sha1string
     if {[string length $sha1string] == 40} {
 	$sha1entry delete 0 end
     }
 }
 
 proc sha1change {n1 n2 op} {
     global sha1string currentid sha1but
     if {$sha1string == {}
 	|| ([info exists currentid] && $sha1string == $currentid)} {
 	set state disabled
     } else {
 	set state normal
     }
     if {[$sha1but cget -state] == $state} return
     if {$state == "normal"} {
 	$sha1but conf -state normal -relief raised -text "Goto: "
     } else {
 	$sha1but conf -state disabled -relief flat -text "SHA1 ID: "
     }
 }
 
 proc gotocommit {} {
     global sha1string currentid idline tagids
     global lineid numcommits
 
     if {$sha1string == {}
 	|| ([info exists currentid] && $sha1string == $currentid)} return
     if {[info exists tagids($sha1string)]} {
 	set id $tagids($sha1string)
     } else {
 	set id [string tolower $sha1string]
 	if {[regexp {^[0-9a-f]{4,39}$} $id]} {
 	    set matches {}
 	    for {set l 0} {$l < $numcommits} {incr l} {
 		if {[string match $id* $lineid($l)]} {
 		    lappend matches $lineid($l)
 		}
 	    }
 	    if {$matches ne {}} {
 		if {[llength $matches] > 1} {
 		    error_popup "Short SHA1 id $id is ambiguous"
 		    return
 		}
 		set id [lindex $matches 0]
 	    }
 	}
     }
     if {[info exists idline($id)]} {
 	selectline $idline($id) 1
 	return
     }
     if {[regexp {^[0-9a-fA-F]{4,}$} $sha1string]} {
 	set type "SHA1 id"
     } else {
 	set type "Tag"
     }
     error_popup "$type $sha1string is not known"
 }
 
 proc lineenter {x y id} {
     global hoverx hovery hoverid hovertimer
     global commitinfo canv
 
     if {![info exists commitinfo($id)]} return
     set hoverx $x
     set hovery $y
     set hoverid $id
     if {[info exists hovertimer]} {
 	after cancel $hovertimer
     }
     set hovertimer [after 500 linehover]
     $canv delete hover
 }
 
 proc linemotion {x y id} {
     global hoverx hovery hoverid hovertimer
 
     if {[info exists hoverid] && $id == $hoverid} {
 	set hoverx $x
 	set hovery $y
 	if {[info exists hovertimer]} {
 	    after cancel $hovertimer
 	}
 	set hovertimer [after 500 linehover]
     }
 }
 
 proc lineleave {id} {
     global hoverid hovertimer canv
 
     if {[info exists hoverid] && $id == $hoverid} {
 	$canv delete hover
 	if {[info exists hovertimer]} {
 	    after cancel $hovertimer
 	    unset hovertimer
 	}
 	unset hoverid
     }
 }
 
 proc linehover {} {
     global hoverx hovery hoverid hovertimer
     global canv linespc lthickness
     global commitinfo mainfont
 
     set text [lindex $commitinfo($hoverid) 0]
     set ymax [lindex [$canv cget -scrollregion] 3]
     if {$ymax == {}} return
     set yfrac [lindex [$canv yview] 0]
     set x [expr {$hoverx + 2 * $linespc}]
     set y [expr {$hovery + $yfrac * $ymax - $linespc / 2}]
     set x0 [expr {$x - 2 * $lthickness}]
     set y0 [expr {$y - 2 * $lthickness}]
     set x1 [expr {$x + [font measure $mainfont $text] + 2 * $lthickness}]
     set y1 [expr {$y + $linespc + 2 * $lthickness}]
     set t [$canv create rectangle $x0 $y0 $x1 $y1 \
 	       -fill \#ffff80 -outline black -width 1 -tags hover]
     $canv raise $t
     set t [$canv create text $x $y -anchor nw -text $text -tags hover]
     $canv raise $t
 }
 
 proc clickisonarrow {id y} {
     global mainline mainlinearrow sidelines lthickness
 
     set thresh [expr {2 * $lthickness + 6}]
     if {[info exists mainline($id)]} {
 	if {$mainlinearrow($id) ne "none"} {
 	    if {abs([lindex $mainline($id) 1] - $y) < $thresh} {
 		return "up"
 	    }
 	}
     }
     if {[info exists sidelines($id)]} {
 	foreach ls $sidelines($id) {
 	    set coords [lindex $ls 0]
 	    set arrow [lindex $ls 2]
 	    if {$arrow eq "first" || $arrow eq "both"} {
 		if {abs([lindex $coords 1] - $y) < $thresh} {
 		    return "up"
 		}
 	    }
 	    if {$arrow eq "last" || $arrow eq "both"} {
 		if {abs([lindex $coords end] - $y) < $thresh} {
 		    return "down"
 		}
 	    }
 	}
     }
     return {}
 }
 
 proc arrowjump {id dirn y} {
     global mainline sidelines canv
 
     set yt {}
     if {$dirn eq "down"} {
 	if {[info exists mainline($id)]} {
 	    set y1 [lindex $mainline($id) 1]
 	    if {$y1 > $y} {
 		set yt $y1
 	    }
 	}
 	if {[info exists sidelines($id)]} {
 	    foreach ls $sidelines($id) {
 		set y1 [lindex $ls 0 1]
 		if {$y1 > $y && ($yt eq {} || $y1 < $yt)} {
 		    set yt $y1
 		}
 	    }
 	}
     } else {
 	if {[info exists sidelines($id)]} {
 	    foreach ls $sidelines($id) {
 		set y1 [lindex $ls 0 end]
 		if {$y1 < $y && ($yt eq {} || $y1 > $yt)} {
 		    set yt $y1
 		}
 	    }
 	}
     }
     if {$yt eq {}} return
     set ymax [lindex [$canv cget -scrollregion] 3]
     if {$ymax eq {} || $ymax <= 0} return
     set view [$canv yview]
     set yspan [expr {[lindex $view 1] - [lindex $view 0]}]
     set yfrac [expr {$yt / $ymax - $yspan / 2}]
     if {$yfrac < 0} {
 	set yfrac 0
     }
     $canv yview moveto $yfrac
 }
 
 proc lineclick {x y id isnew} {
     global ctext commitinfo children cflist canv thickerline
 
     unmarkmatches
     unselectline
     normalline
     $canv delete hover
     # draw this line thicker than normal
     drawlines $id 1
     set thickerline $id
     if {$isnew} {
 	set ymax [lindex [$canv cget -scrollregion] 3]
 	if {$ymax eq {}} return
 	set yfrac [lindex [$canv yview] 0]
 	set y [expr {$y + $yfrac * $ymax}]
     }
     set dirn [clickisonarrow $id $y]
     if {$dirn ne {}} {
 	arrowjump $id $dirn $y
 	return
     }
 
     if {$isnew} {
 	addtohistory [list lineclick $x $y $id 0]
     }
     # fill the details pane with info about this line
     $ctext conf -state normal
     $ctext delete 0.0 end
     $ctext tag conf link -foreground blue -underline 1
     $ctext tag bind link <Enter> { %W configure -cursor hand2 }
     $ctext tag bind link <Leave> { %W configure -cursor $curtextcursor }
     $ctext insert end "Parent:\t"
     $ctext insert end $id [list link link0]
     $ctext tag bind link0 <1> [list selbyid $id]
     set info $commitinfo($id)
     $ctext insert end "\n\t[lindex $info 0]\n"
     $ctext insert end "\tAuthor:\t[lindex $info 1]\n"
     $ctext insert end "\tDate:\t[lindex $info 2]\n"
     if {[info exists children($id)]} {
 	$ctext insert end "\nChildren:"
 	set i 0
 	foreach child $children($id) {
 	    incr i
 	    set info $commitinfo($child)
 	    $ctext insert end "\n\t"
 	    $ctext insert end $child [list link link$i]
 	    $ctext tag bind link$i <1> [list selbyid $child]
 	    $ctext insert end "\n\t[lindex $info 0]"
 	    $ctext insert end "\n\tAuthor:\t[lindex $info 1]"
 	    $ctext insert end "\n\tDate:\t[lindex $info 2]\n"
 	}
     }
     $ctext conf -state disabled
 
     $cflist delete 0 end
 }
 
 proc normalline {} {
     global thickerline
     if {[info exists thickerline]} {
 	drawlines $thickerline 0
 	unset thickerline
     }
 }
 
 proc selbyid {id} {
     global idline
     if {[info exists idline($id)]} {
 	selectline $idline($id) 1
     }
 }
 
 proc mstime {} {
     global startmstime
     if {![info exists startmstime]} {
 	set startmstime [clock clicks -milliseconds]
     }
     return [format "%.3f" [expr {([clock click -milliseconds] - $startmstime) / 1000.0}]]
 }
 
 proc rowmenu {x y id} {
     global rowctxmenu idline selectedline rowmenuid
 
     if {![info exists selectedline] || $idline($id) eq $selectedline} {
 	set state disabled
     } else {
 	set state normal
     }
     $rowctxmenu entryconfigure 0 -state $state
     $rowctxmenu entryconfigure 1 -state $state
     $rowctxmenu entryconfigure 2 -state $state
     set rowmenuid $id
     tk_popup $rowctxmenu $x $y
 }
 
 proc diffvssel {dirn} {
     global rowmenuid selectedline lineid
 
     if {![info exists selectedline]} return
     if {$dirn} {
 	set oldid $lineid($selectedline)
 	set newid $rowmenuid
     } else {
 	set oldid $rowmenuid
 	set newid $lineid($selectedline)
     }
     addtohistory [list doseldiff $oldid $newid]
     doseldiff $oldid $newid
 }
 
 proc doseldiff {oldid newid} {
     global ctext cflist
     global commitinfo
 
     $ctext conf -state normal
     $ctext delete 0.0 end
     $ctext mark set fmark.0 0.0
     $ctext mark gravity fmark.0 left
     $cflist delete 0 end
     $cflist insert end "Top"
     $ctext insert end "From "
     $ctext tag conf link -foreground blue -underline 1
     $ctext tag bind link <Enter> { %W configure -cursor hand2 }
     $ctext tag bind link <Leave> { %W configure -cursor $curtextcursor }
     $ctext tag bind link0 <1> [list selbyid $oldid]
     $ctext insert end $oldid [list link link0]
     $ctext insert end "\n     "
     $ctext insert end [lindex $commitinfo($oldid) 0]
     $ctext insert end "\n\nTo   "
     $ctext tag bind link1 <1> [list selbyid $newid]
     $ctext insert end $newid [list link link1]
     $ctext insert end "\n     "
     $ctext insert end [lindex $commitinfo($newid) 0]
     $ctext insert end "\n"
     $ctext conf -state disabled
     $ctext tag delete Comments
     $ctext tag remove found 1.0 end
     startdiff [list $newid $oldid]
 }
 
 proc mkpatch {} {
     global rowmenuid currentid commitinfo patchtop patchnum
 
     if {![info exists currentid]} return
     set oldid $currentid
     set oldhead [lindex $commitinfo($oldid) 0]
     set newid $rowmenuid
     set newhead [lindex $commitinfo($newid) 0]
     set top .patch
     set patchtop $top
     catch {destroy $top}
     toplevel $top
     label $top.title -text "Generate patch"
     grid $top.title - -pady 10
     label $top.from -text "From:"
     entry $top.fromsha1 -width 40 -relief flat
     $top.fromsha1 insert 0 $oldid
     $top.fromsha1 conf -state readonly
     grid $top.from $top.fromsha1 -sticky w
     entry $top.fromhead -width 60 -relief flat
     $top.fromhead insert 0 $oldhead
     $top.fromhead conf -state readonly
     grid x $top.fromhead -sticky w
     label $top.to -text "To:"
     entry $top.tosha1 -width 40 -relief flat
     $top.tosha1 insert 0 $newid
     $top.tosha1 conf -state readonly
     grid $top.to $top.tosha1 -sticky w
     entry $top.tohead -width 60 -relief flat
     $top.tohead insert 0 $newhead
     $top.tohead conf -state readonly
     grid x $top.tohead -sticky w
     button $top.rev -text "Reverse" -command mkpatchrev -padx 5
     grid $top.rev x -pady 10
     label $top.flab -text "Output file:"
     entry $top.fname -width 60
     $top.fname insert 0 [file normalize "patch$patchnum.patch"]
     incr patchnum
     grid $top.flab $top.fname -sticky w
     frame $top.buts
     button $top.buts.gen -text "Generate" -command mkpatchgo
     button $top.buts.can -text "Cancel" -command mkpatchcan
     grid $top.buts.gen $top.buts.can
     grid columnconfigure $top.buts 0 -weight 1 -uniform a
     grid columnconfigure $top.buts 1 -weight 1 -uniform a
     grid $top.buts - -pady 10 -sticky ew
     focus $top.fname
 }
 
 proc mkpatchrev {} {
     global patchtop
 
     set oldid [$patchtop.fromsha1 get]
     set oldhead [$patchtop.fromhead get]
     set newid [$patchtop.tosha1 get]
     set newhead [$patchtop.tohead get]
     foreach e [list fromsha1 fromhead tosha1 tohead] \
 	    v [list $newid $newhead $oldid $oldhead] {
 	$patchtop.$e conf -state normal
 	$patchtop.$e delete 0 end
 	$patchtop.$e insert 0 $v
 	$patchtop.$e conf -state readonly
     }
 }
 
 proc mkpatchgo {} {
     global patchtop env
 
     set oldid [$patchtop.fromsha1 get]
     set newid [$patchtop.tosha1 get]
     set fname [$patchtop.fname get]
     if {[catch {exec $env(HG) --config ui.report_untrusted=false debug-diff-tree -p $oldid $newid >$fname &} err]} {
 	error_popup "Error creating patch: $err"
     }
     catch {destroy $patchtop}
     unset patchtop
 }
 
 proc mkpatchcan {} {
     global patchtop
 
     catch {destroy $patchtop}
     unset patchtop
 }
 
 proc mktag {} {
     global rowmenuid mktagtop commitinfo
 
     set top .maketag
     set mktagtop $top
     catch {destroy $top}
     toplevel $top
     label $top.title -text "Create tag"
     grid $top.title - -pady 10
     label $top.id -text "ID:"
     entry $top.sha1 -width 40 -relief flat
     $top.sha1 insert 0 $rowmenuid
     $top.sha1 conf -state readonly
     grid $top.id $top.sha1 -sticky w
     entry $top.head -width 60 -relief flat
     $top.head insert 0 [lindex $commitinfo($rowmenuid) 0]
     $top.head conf -state readonly
     grid x $top.head -sticky w
     label $top.tlab -text "Tag name:"
     entry $top.tag -width 60
     grid $top.tlab $top.tag -sticky w
     frame $top.buts
     button $top.buts.gen -text "Create" -command mktaggo
     button $top.buts.can -text "Cancel" -command mktagcan
     grid $top.buts.gen $top.buts.can
     grid columnconfigure $top.buts 0 -weight 1 -uniform a
     grid columnconfigure $top.buts 1 -weight 1 -uniform a
     grid $top.buts - -pady 10 -sticky ew
     focus $top.tag
 }
 
 proc domktag {} {
     global mktagtop env tagids idtags
 
     set id [$mktagtop.sha1 get]
     set tag [$mktagtop.tag get]
     if {$tag == {}} {
 	error_popup "No tag name specified"
 	return
     }
     if {[info exists tagids($tag)]} {
 	error_popup "Tag \"$tag\" already exists"
 	return
     }
     if {[catch {
 	set out [exec $env(HG) --config ui.report_untrusted=false tag -r $id $tag]
     } err]} {
 	error_popup "Error creating tag: $err"
 	return
     }
 
     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]
     if {[info exists selectedline] && $selectedline == $idline($id)} {
 	selectline $selectedline 0
     }
 }
 
 proc mktagcan {} {
     global mktagtop
 
     catch {destroy $mktagtop}
     unset mktagtop
 }
 
 proc mktaggo {} {
     domktag
     mktagcan
 }
 
 proc writecommit {} {
     global rowmenuid wrcomtop commitinfo wrcomcmd
 
     set top .writecommit
     set wrcomtop $top
     catch {destroy $top}
     toplevel $top
     label $top.title -text "Write commit to file"
     grid $top.title - -pady 10
     label $top.id -text "ID:"
     entry $top.sha1 -width 40 -relief flat
     $top.sha1 insert 0 $rowmenuid
     $top.sha1 conf -state readonly
     grid $top.id $top.sha1 -sticky w
     entry $top.head -width 60 -relief flat
     $top.head insert 0 [lindex $commitinfo($rowmenuid) 0]
     $top.head conf -state readonly
     grid x $top.head -sticky w
     label $top.clab -text "Command:"
     entry $top.cmd -width 60 -textvariable wrcomcmd
     grid $top.clab $top.cmd -sticky w -pady 10
     label $top.flab -text "Output file:"
     entry $top.fname -width 60
     $top.fname insert 0 [file normalize "commit-[string range $rowmenuid 0 6]"]
     grid $top.flab $top.fname -sticky w
     frame $top.buts
     button $top.buts.gen -text "Write" -command wrcomgo
     button $top.buts.can -text "Cancel" -command wrcomcan
     grid $top.buts.gen $top.buts.can
     grid columnconfigure $top.buts 0 -weight 1 -uniform a
     grid columnconfigure $top.buts 1 -weight 1 -uniform a
     grid $top.buts - -pady 10 -sticky ew
     focus $top.fname
 }
 
 proc wrcomgo {} {
     global wrcomtop
 
     set id [$wrcomtop.sha1 get]
     set cmd "echo $id | [$wrcomtop.cmd get]"
     set fname [$wrcomtop.fname get]
     if {[catch {exec sh -c $cmd > $fname &} err]} {
 	error_popup "Error writing commit: $err"
     }
     catch {destroy $wrcomtop}
     unset wrcomtop
 }
 
 proc wrcomcan {} {
     global wrcomtop
 
     catch {destroy $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 showtag {tag isnew} {
     global ctext cflist tagcontents tagids linknum
 
     if {$isnew} {
 	addtohistory [list showtag $tag 0]
     }
     $ctext conf -state normal
     $ctext delete 0.0 end
     set linknum 0
     if {[info exists tagcontents($tag)]} {
 	set text $tagcontents($tag)
     } else {
 	set text "Tag: $tag\nId:  $tagids($tag)"
     }
     appendwithlinks $text
     $ctext conf -state disabled
     $cflist delete 0 end
 }
 
 proc doquit {} {
     global stopped
     set stopped 100
     destroy .
 }
 
 # defaults...
 set datemode 0
 set boldnames 0
 set diffopts "-U 5 -p"
 set wrcomcmd "\"\$HG\" --config ui.report_untrusted=false debug-diff-tree --stdin -p --pretty"
 
 set mainfont {Helvetica 9}
 set textfont {Courier 9}
 set findmergefiles 0
 set gaudydiff 0
 set maxgraphpct 50
 set maxwidth 16
 
 set colors {green red blue magenta darkgrey brown orange}
 
 catch {source ~/.gitk}
 
 set namefont $mainfont
 if {$boldnames} {
     lappend namefont bold
 }
 
 set revtreeargs {}
 foreach arg $argv {
     switch -regexp -- $arg {
 	"^$" { }
 	"^-b" { set boldnames 1 }
 	"^-d" { set datemode 1 }
 	default {
 	    lappend revtreeargs $arg
 	}
     }
 }
 
 set history {}
 set historyindex 0
 
 set stopped 0
 set redisplaying 0
 set stuffsaved 0
 set patchnum 0
 setcoords
 makewindow
 readrefs
 getcommits $revtreeargs

hgext/convert/__init__.py

@@ -1,450 +1,450 b''
 # convert.py Foreign SCM converter
 #
 # Copyright 2005-2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from common import NoRepo, converter_source, converter_sink
 from cvs import convert_cvs
 from git import convert_git
 from hg import mercurial_source, mercurial_sink
 from subversion import convert_svn, debugsvnlog
 
 import os, shlex, shutil
 from mercurial import hg, ui, util, commands
 from mercurial.i18n import _
 
 commands.norepo += " convert debugsvnlog"
 
 converters = [convert_cvs, convert_git, convert_svn, mercurial_source,
               mercurial_sink]
 
 def convertsource(ui, path, **opts):
     for c in converters:
         try:
             return c.getcommit and c(ui, path, **opts)
         except (AttributeError, NoRepo):
             pass
     raise util.Abort('%s: unknown repository type' % path)
 
 def convertsink(ui, path):
     if not os.path.isdir(path):
         raise util.Abort("%s: not a directory" % path)
     for c in converters:
         try:
             return c.putcommit and c(ui, path)
         except (AttributeError, NoRepo):
             pass
     raise util.Abort('%s: unknown repository type' % path)
 
 class convert(object):
     def __init__(self, ui, source, dest, revmapfile, filemapper, opts):
 
         self.source = source
         self.dest = dest
         self.ui = ui
         self.opts = opts
         self.commitcache = {}
         self.revmapfile = revmapfile
         self.revmapfilefd = None
         self.authors = {}
         self.authorfile = None
         self.mapfile = filemapper
 
         self.map = {}
         try:
             origrevmapfile = open(self.revmapfile, 'r')
             for l in origrevmapfile:
                 sv, dv = l[:-1].split()
                 self.map[sv] = dv
             origrevmapfile.close()
         except IOError:
             pass
 
         # Read first the dst author map if any
         authorfile = self.dest.authorfile()
         if authorfile and os.path.exists(authorfile):
             self.readauthormap(authorfile)
         # Extend/Override with new author map if necessary
         if opts.get('authors'):
             self.readauthormap(opts.get('authors'))
             self.authorfile = self.dest.authorfile()
 
     def walktree(self, heads):
         '''Return a mapping that identifies the uncommitted parents of every
         uncommitted changeset.'''
         visit = heads
         known = {}
         parents = {}
         while visit:
             n = visit.pop(0)
             if n in known or n in self.map: continue
             known[n] = 1
             self.commitcache[n] = self.source.getcommit(n)
             cp = self.commitcache[n].parents
             parents[n] = []
             for p in cp:
                 parents[n].append(p)
                 visit.append(p)
 
         return parents
 
     def toposort(self, parents):
         '''Return an ordering such that every uncommitted changeset is
         preceeded by all its uncommitted ancestors.'''
         visit = parents.keys()
         seen = {}
         children = {}
 
         while visit:
             n = visit.pop(0)
             if n in seen: continue
             seen[n] = 1
             # Ensure that nodes without parents are present in the 'children'
             # mapping.
             children.setdefault(n, [])
             for p in parents[n]:
                 if not p in self.map:
                     visit.append(p)
                 children.setdefault(p, []).append(n)
 
         s = []
         removed = {}
         visit = children.keys()
         while visit:
             n = visit.pop(0)
             if n in removed: continue
             dep = 0
             if n in parents:
                 for p in parents[n]:
                     if p in self.map: continue
                     if p not in removed:
                         # we're still dependent
                         visit.append(n)
                         dep = 1
                         break
 
             if not dep:
                 # all n's parents are in the list
                 removed[n] = 1
                 if n not in self.map:
                     s.append(n)
                 if n in children:
                     for c in children[n]:
                         visit.insert(0, c)
 
         if self.opts.get('datesort'):
             depth = {}
             for n in s:
                 depth[n] = 0
                 pl = [p for p in self.commitcache[n].parents
                       if p not in self.map]
                 if pl:
                     depth[n] = max([depth[p] for p in pl]) + 1
 
             s = [(depth[n], self.commitcache[n].date, n) for n in s]
             s.sort()
             s = [e[2] for e in s]
 
         return s
 
     def mapentry(self, src, dst):
         if self.revmapfilefd is None:
             try:
                 self.revmapfilefd = open(self.revmapfile, "a")
             except IOError, (errno, strerror):
                 raise util.Abort("Could not open map file %s: %s, %s\n" % (self.revmapfile, errno, strerror))
         self.map[src] = dst
         self.revmapfilefd.write("%s %s\n" % (src, dst))
         self.revmapfilefd.flush()
 
     def writeauthormap(self):
         authorfile = self.authorfile
         if authorfile:
            self.ui.status('Writing author map file %s\n' % authorfile)
            ofile = open(authorfile, 'w+')
            for author in self.authors:
                ofile.write("%s=%s\n" % (author, self.authors[author]))
            ofile.close()
 
     def readauthormap(self, authorfile):
         afile = open(authorfile, 'r')
         for line in afile:
             try:
                 srcauthor = line.split('=')[0].strip()
                 dstauthor = line.split('=')[1].strip()
                 if srcauthor in self.authors and dstauthor != self.authors[srcauthor]:
                     self.ui.status(
                         'Overriding mapping for author %s, was %s, will be %s\n'
                         % (srcauthor, self.authors[srcauthor], dstauthor))
                 else:
                     self.ui.debug('Mapping author %s to %s\n'
                                   % (srcauthor, dstauthor))
                     self.authors[srcauthor] = dstauthor
             except IndexError:
                 self.ui.warn(
                     'Ignoring bad line in author file map %s: %s\n'
                     % (authorfile, line))
         afile.close()
 
     def copy(self, rev):
         commit = self.commitcache[rev]
         do_copies = hasattr(self.dest, 'copyfile')
         filenames = []
 
         files, copies = self.source.getchanges(rev)
         for f, v in files:
             newf = self.mapfile(f)
             if not newf:
                 continue
             filenames.append(newf)
             try:
                 data = self.source.getfile(f, v)
             except IOError, inst:
                 self.dest.delfile(newf)
             else:
                 e = self.source.getmode(f, v)
                 self.dest.putfile(newf, e, data)
                 if do_copies:
                     if f in copies:
                         copyf = self.mapfile(copies[f])
                         if copyf:
                             # Merely marks that a copy happened.
                             self.dest.copyfile(copyf, newf)
 
         parents = [self.map[r] for r in commit.parents]
         newnode = self.dest.putcommit(filenames, parents, commit)
         self.mapentry(rev, newnode)
 
     def convert(self):
         try:
             self.dest.before()
             self.source.setrevmap(self.map)
             self.ui.status("scanning source...\n")
             heads = self.source.getheads()
             parents = self.walktree(heads)
             self.ui.status("sorting...\n")
             t = self.toposort(parents)
             num = len(t)
             c = None
 
             self.ui.status("converting...\n")
             for c in t:
                 num -= 1
                 desc = self.commitcache[c].desc
                 if "\n" in desc:
                     desc = desc.splitlines()[0]
                 author = self.commitcache[c].author
                 author = self.authors.get(author, author)
                 self.commitcache[c].author = author
                 self.ui.status("%d %s\n" % (num, desc))
                 self.copy(c)
 
             tags = self.source.gettags()
             ctags = {}
             for k in tags:
                 v = tags[k]
                 if v in self.map:
                     ctags[k] = self.map[v]
 
             if c and ctags:
                 nrev = self.dest.puttags(ctags)
                 # write another hash correspondence to override the previous
                 # one so we don't end up with extra tag heads
                 if nrev:
                     self.mapentry(c, nrev)
 
             self.writeauthormap()
         finally:
             self.cleanup()
 
     def cleanup(self):
         self.dest.after()
         if self.revmapfilefd:
             self.revmapfilefd.close()
 
 def rpairs(name):
     e = len(name)
     while e != -1:
         yield name[:e], name[e+1:]
         e = name.rfind('/', 0, e)
 
 class filemapper(object):
     '''Map and filter filenames when importing.
     A name can be mapped to itself, a new name, or None (omit from new
     repository).'''
 
     def __init__(self, ui, path=None):
         self.ui = ui
         self.include = {}
         self.exclude = {}
         self.rename = {}
         if path:
             if self.parse(path):
                 raise util.Abort(_('errors in filemap'))
 
     def parse(self, path):
         errs = 0
         def check(name, mapping, listname):
             if name in mapping:
                 self.ui.warn(_('%s:%d: %r already in %s list\n') %
                              (lex.infile, lex.lineno, name, listname))
                 return 1
             return 0
         lex = shlex.shlex(open(path), path, True)
         lex.wordchars += '!@#$%^&*()-=+[]{}|;:,./<>?'
         cmd = lex.get_token()
         while cmd:
             if cmd == 'include':
                 name = lex.get_token()
                 errs += check(name, self.exclude, 'exclude')
                 self.include[name] = name
             elif cmd == 'exclude':
                 name = lex.get_token()
                 errs += check(name, self.include, 'include')
                 errs += check(name, self.rename, 'rename')
                 self.exclude[name] = name
             elif cmd == 'rename':
                 src = lex.get_token()
                 dest = lex.get_token()
                 errs += check(src, self.exclude, 'exclude')
                 self.rename[src] = dest
             elif cmd == 'source':
                 errs += self.parse(lex.get_token())
             else:
                 self.ui.warn(_('%s:%d: unknown directive %r\n') %
                              (lex.infile, lex.lineno, cmd))
                 errs += 1
             cmd = lex.get_token()
         return errs
 
     def lookup(self, name, mapping):
         for pre, suf in rpairs(name):
             try:
                 return mapping[pre], pre, suf
             except KeyError, err:
                 pass
         return '', name, ''
-        
+
     def __call__(self, name):
         if self.include:
             inc = self.lookup(name, self.include)[0]
         else:
             inc = name
         if self.exclude:
             exc = self.lookup(name, self.exclude)[0]
         else:
             exc = ''
         if not inc or exc:
             return None
         newpre, pre, suf = self.lookup(name, self.rename)
         if newpre:
             if newpre == '.':
                 return suf
             if suf:
                 return newpre + '/' + suf
             return newpre
         return name
 
 def _convert(ui, src, dest=None, revmapfile=None, **opts):
     """Convert a foreign SCM repository to a Mercurial one.
 
     Accepted source formats:
     - GIT
     - CVS
     - SVN
 
     Accepted destination formats:
     - Mercurial
 
     If no revision is given, all revisions will be converted. Otherwise,
     convert will only import up to the named revision (given in a format
     understood by the source).
 
     If no destination directory name is specified, it defaults to the
     basename of the source with '-hg' appended.  If the destination
     repository doesn't exist, it will be created.
 
     If <revmapfile> isn't given, it will be put in a default location
     (<dest>/.hg/shamap by default).  The <revmapfile> is a simple text
     file that maps each source commit ID to the destination ID for
     that revision, like so:
     <source ID> <destination ID>
 
     If the file doesn't exist, it's automatically created.  It's updated
     on each commit copied, so convert-repo can be interrupted and can
     be run repeatedly to copy new commits.
 
     The [username mapping] file is a simple text file that maps each source
     commit author to a destination commit author. It is handy for source SCMs
     that use unix logins to identify authors (eg: CVS). One line per author
     mapping and the line format is:
     srcauthor=whatever string you want
     """
 
     util._encoding = 'UTF-8'
 
     if not dest:
         dest = hg.defaultdest(src) + "-hg"
         ui.status("assuming destination %s\n" % dest)
 
     # Try to be smart and initalize things when required
     created = False
     if os.path.isdir(dest):
         if len(os.listdir(dest)) > 0:
             try:
                 hg.repository(ui, dest)
                 ui.status("destination %s is a Mercurial repository\n" % dest)
             except hg.RepoError:
                 raise util.Abort(
                     "destination directory %s is not empty.\n"
                     "Please specify an empty directory to be initialized\n"
                     "or an already initialized mercurial repository"
                     % dest)
         else:
             ui.status("initializing destination %s repository\n" % dest)
             hg.repository(ui, dest, create=True)
             created = True
     elif os.path.exists(dest):
         raise util.Abort("destination %s exists and is not a directory" % dest)
     else:
         ui.status("initializing destination %s repository\n" % dest)
         hg.repository(ui, dest, create=True)
         created = True
 
     destc = convertsink(ui, dest)
 
     try:
         srcc = convertsource(ui, src, rev=opts.get('rev'))
     except Exception:
         if created:
             shutil.rmtree(dest, True)
         raise
 
     if not revmapfile:
         try:
             revmapfile = destc.revmapfile()
         except:
             revmapfile = os.path.join(destc, "map")
 
 
     c = convert(ui, srcc, destc, revmapfile, filemapper(ui, opts['filemap']),
                 opts)
     c.convert()
 
 
 cmdtable = {
     "convert":
         (_convert,
          [('A', 'authors', '', 'username mapping filename'),
           ('', 'filemap', '', 'remap file names using contents of file'),
           ('r', 'rev', '', 'import up to target revision REV'),
           ('', 'datesort', None, 'try to sort changesets by date')],
          'hg convert [OPTION]... SOURCE [DEST [MAPFILE]]'),
     "debugsvnlog":
         (debugsvnlog,
          [],
          'hg debugsvnlog'),
 }
 

hgext/convert/common.py

@@ -1,136 +1,136 b''
 # common code for the convert extension
 import base64
 import cPickle as pickle
 
 def encodeargs(args):
     def encodearg(s):
         lines = base64.encodestring(s)
         lines = [l.splitlines()[0] for l in lines]
         return ''.join(lines)
-    
+
     s = pickle.dumps(args)
     return encodearg(s)
 
 def decodeargs(s):
     s = base64.decodestring(s)
     return pickle.loads(s)
 
 class NoRepo(Exception): pass
 
 class commit(object):
     def __init__(self, author, date, desc, parents, branch=None, rev=None):
         self.author = author
         self.date = date
         self.desc = desc
         self.parents = parents
         self.branch = branch
         self.rev = rev
 
 class converter_source(object):
     """Conversion source interface"""
 
     def __init__(self, ui, path, rev=None):
         """Initialize conversion source (or raise NoRepo("message")
         exception if path is not a valid repository)"""
         self.ui = ui
         self.path = path
         self.rev = rev
 
         self.encoding = 'utf-8'
 
     def setrevmap(self, revmap):
         """set the map of already-converted revisions"""
         pass
 
     def getheads(self):
         """Return a list of this repository's heads"""
         raise NotImplementedError()
 
     def getfile(self, name, rev):
         """Return file contents as a string"""
         raise NotImplementedError()
 
     def getmode(self, name, rev):
         """Return file mode, eg. '', 'x', or 'l'"""
         raise NotImplementedError()
 
     def getchanges(self, version):
         """Returns a tuple of (files, copies)
         Files is a sorted list of (filename, id) tuples for all files changed
         in version, where id is the source revision id of the file.
 
         copies is a dictionary of dest: source
         """
         raise NotImplementedError()
 
     def getcommit(self, version):
         """Return the commit object for version"""
         raise NotImplementedError()
 
     def gettags(self):
         """Return the tags as a dictionary of name: revision"""
         raise NotImplementedError()
 
     def recode(self, s, encoding=None):
         if not encoding:
             encoding = self.encoding or 'utf-8'
 
         try:
             return s.decode(encoding).encode("utf-8")
         except:
             try:
                 return s.decode("latin-1").encode("utf-8")
             except:
                 return s.decode(encoding, "replace").encode("utf-8")
 
 class converter_sink(object):
     """Conversion sink (target) interface"""
 
     def __init__(self, ui, path):
         """Initialize conversion sink (or raise NoRepo("message")
         exception if path is not a valid repository)"""
         raise NotImplementedError()
 
     def getheads(self):
         """Return a list of this repository's heads"""
         raise NotImplementedError()
 
     def revmapfile(self):
         """Path to a file that will contain lines
         source_rev_id sink_rev_id
         mapping equivalent revision identifiers for each system."""
         raise NotImplementedError()
 
     def authorfile(self):
         """Path to a file that will contain lines
         srcauthor=dstauthor
         mapping equivalent authors identifiers for each system."""
         return None
 
     def putfile(self, f, e, data):
         """Put file for next putcommit().
         f: path to file
         e: '', 'x', or 'l' (regular file, executable, or symlink)
         data: file contents"""
         raise NotImplementedError()
 
     def delfile(self, f):
         """Delete file for next putcommit().
         f: path to file"""
         raise NotImplementedError()
 
     def putcommit(self, files, parents, commit):
         """Create a revision with all changed files listed in 'files'
         and having listed parents. 'commit' is a commit object containing
         at a minimum the author, date, and message for this changeset.
         Called after putfile() and delfile() calls. Note that the sink
         repository is not told to update itself to a particular revision
         (or even what that revision would be) before it receives the
         file data."""
         raise NotImplementedError()
 
     def puttags(self, tags):
         """Put tags into sink.
         tags: {tagname: sink_rev_id, ...}"""
         raise NotImplementedError()
 

hgext/convert/hg.py

@@ -1,178 +1,178 b''
 # hg backend for convert extension
 
 # Note for hg->hg conversion: Old versions of Mercurial didn't trim
 # the whitespace from the ends of commit messages, but new versions
 # do.  Changesets created by those older versions, then converted, may
 # thus have different hashes for changesets that are otherwise
 # identical.
 
 
 import os, time
 from mercurial.i18n import _
 from mercurial.node import *
 from mercurial import hg, lock, revlog, util
 
 from common import NoRepo, commit, converter_source, converter_sink
 
 class mercurial_sink(converter_sink):
     def __init__(self, ui, path):
         self.path = path
         self.ui = ui
         try:
             self.repo = hg.repository(self.ui, path)
         except:
             raise NoRepo("could not open hg repo %s as sink" % path)
         self.lock = None
         self.wlock = None
         self.branchnames = ui.configbool('convert', 'hg.usebranchnames', True)
 
     def before(self):
         self.wlock = self.repo.wlock()
         self.lock = self.repo.lock()
 
     def after(self):
         self.lock = None
         self.wlock = None
 
     def revmapfile(self):
         return os.path.join(self.path, ".hg", "shamap")
 
     def authorfile(self):
         return os.path.join(self.path, ".hg", "authormap")
 
     def getheads(self):
         h = self.repo.changelog.heads()
         return [ hex(x) for x in h ]
 
     def putfile(self, f, e, data):
         self.repo.wwrite(f, data, e)
         if f not in self.repo.dirstate:
             self.repo.dirstate.add(f)
 
     def copyfile(self, source, dest):
         self.repo.copy(source, dest)
 
     def delfile(self, f):
         try:
             os.unlink(self.repo.wjoin(f))
             #self.repo.remove([f])
         except:
             pass
 
     def putcommit(self, files, parents, commit):
         if not files:
             return hex(self.repo.changelog.tip())
 
         seen = {hex(nullid): 1}
         pl = []
         for p in parents:
             if p not in seen:
                 pl.append(p)
                 seen[p] = 1
         parents = pl
 
         if len(parents) < 2: parents.append("0" * 40)
         if len(parents) < 2: parents.append("0" * 40)
         p2 = parents.pop(0)
 
         text = commit.desc
         extra = {}
         if self.branchnames and commit.branch:
             extra['branch'] = commit.branch
         if commit.rev:
             extra['convert_revision'] = commit.rev
 
         while parents:
             p1 = p2
             p2 = parents.pop(0)
             a = self.repo.rawcommit(files, text, commit.author, commit.date,
                                     bin(p1), bin(p2), extra=extra)
             self.repo.dirstate.invalidate()
             text = "(octopus merge fixup)\n"
             p2 = hg.hex(self.repo.changelog.tip())
 
         return p2
 
     def puttags(self, tags):
         try:
             old = self.repo.wfile(".hgtags").read()
             oldlines = old.splitlines(1)
             oldlines.sort()
         except:
             oldlines = []
 
         k = tags.keys()
         k.sort()
         newlines = []
         for tag in k:
             newlines.append("%s %s\n" % (tags[tag], tag))
 
         newlines.sort()
 
         if newlines != oldlines:
             self.ui.status("updating tags\n")
             f = self.repo.wfile(".hgtags", "w")
             f.write("".join(newlines))
             f.close()
             if not oldlines: self.repo.add([".hgtags"])
             date = "%s 0" % int(time.mktime(time.gmtime()))
             self.repo.rawcommit([".hgtags"], "update tags", "convert-repo",
                                 date, self.repo.changelog.tip(), nullid)
             return hex(self.repo.changelog.tip())
 
 class mercurial_source(converter_source):
     def __init__(self, ui, path, rev=None):
         converter_source.__init__(self, ui, path, rev)
         self.repo = hg.repository(self.ui, path)
         self.lastrev = None
         self.lastctx = None
 
     def changectx(self, rev):
         if self.lastrev != rev:
             self.lastctx = self.repo.changectx(rev)
             self.lastrev = rev
         return self.lastctx
 
     def getheads(self):
         if self.rev:
             return [hex(self.repo.changectx(self.rev).node())]
         else:
             return [hex(node) for node in self.repo.heads()]
 
     def getfile(self, name, rev):
         try:
             return self.changectx(rev).filectx(name).data()
         except revlog.LookupError, err:
             raise IOError(err)
 
     def getmode(self, name, rev):
         m = self.changectx(rev).manifest()
         return (m.execf(name) and 'x' or '') + (m.linkf(name) and 'l' or '')
 
     def getchanges(self, rev):
         ctx = self.changectx(rev)
         m, a, r = self.repo.status(ctx.parents()[0].node(), ctx.node())[:3]
         changes = [(name, rev) for name in m + a + r]
         changes.sort()
         return (changes, self.getcopies(ctx))
 
     def getcopies(self, ctx):
         added = self.repo.status(ctx.parents()[0].node(), ctx.node())[1]
         copies = {}
         for name in added:
             try:
                 copies[name] = ctx.filectx(name).renamed()[0]
             except TypeError:
                 pass
         return copies
-        
+
     def getcommit(self, rev):
         ctx = self.changectx(rev)
         parents = [hex(p.node()) for p in ctx.parents() if p.node() != nullid]
         return commit(author=ctx.user(), date=util.datestr(ctx.date()),
                       desc=ctx.description(), parents=parents,
                       branch=ctx.branch())
 
     def gettags(self):
         tags = [t for t in self.repo.tagslist() if t[0] != 'tip']
         return dict([(name, hex(node)) for name, node in tags])

hgext/convert/subversion.py

@@ -1,645 +1,645 b''
 # Subversion 1.4/1.5 Python API backend
 #
 # Copyright(C) 2007 Daniel Holth et al
 #
 # Configuration options:
 #
 # convert.svn.trunk
 #   Relative path to the trunk (default: "trunk")
 # convert.svn.branches
 #   Relative path to tree of branches (default: "branches")
 #
 # Set these in a hgrc, or on the command line as follows:
 #
 #   hg convert --config convert.svn.trunk=wackoname [...]
 
 import locale
 import os
 import sys
 import cPickle as pickle
 from mercurial import util
 
 # Subversion stuff. Works best with very recent Python SVN bindings
 # e.g. SVN 1.5 or backports. Thanks to the bzr folks for enhancing
 # these bindings.
 
 from cStringIO import StringIO
 
 from common import NoRepo, commit, converter_source, encodeargs, decodeargs
 
 try:
     from svn.core import SubversionException, Pool
     import svn
     import svn.client
     import svn.core
     import svn.ra
     import svn.delta
     import transport
 except ImportError:
     pass
 
 def geturl(path):
     try:
         return svn.client.url_from_path(svn.core.svn_path_canonicalize(path))
     except SubversionException:
         pass
     if os.path.isdir(path):
         return 'file://%s' % os.path.normpath(os.path.abspath(path))
     return path
 
 def optrev(number):
     optrev = svn.core.svn_opt_revision_t()
     optrev.kind = svn.core.svn_opt_revision_number
     optrev.value.number = number
     return optrev
 
 class changedpath(object):
     def __init__(self, p):
         self.copyfrom_path = p.copyfrom_path
         self.copyfrom_rev = p.copyfrom_rev
         self.action = p.action
 
 def get_log_child(fp, url, paths, start, end, limit=0, discover_changed_paths=True,
                     strict_node_history=False):
     protocol = -1
     def receiver(orig_paths, revnum, author, date, message, pool):
         if orig_paths is not None:
             for k, v in orig_paths.iteritems():
                 orig_paths[k] = changedpath(v)
         pickle.dump((orig_paths, revnum, author, date, message),
-                                fp, protocol)
-        
+                    fp, protocol)
+
     try:
         # Use an ra of our own so that our parent can consume
         # our results without confusing the server.
         t = transport.SvnRaTransport(url=url)
         svn.ra.get_log(t.ra, paths, start, end, limit,
                        discover_changed_paths,
                        strict_node_history,
                        receiver)
     except SubversionException, (inst, num):
         pickle.dump(num, fp, protocol)
     else:
         pickle.dump(None, fp, protocol)
     fp.close()
 
 def debugsvnlog(ui, **opts):
     """Fetch SVN log in a subprocess and channel them back to parent to
     avoid memory collection issues.
     """
     util.set_binary(sys.stdin)
     util.set_binary(sys.stdout)
     args = decodeargs(sys.stdin.read())
     get_log_child(sys.stdout, *args)
 
 # SVN conversion code stolen from bzr-svn and tailor
 class convert_svn(converter_source):
     def __init__(self, ui, url, rev=None):
         super(convert_svn, self).__init__(ui, url, rev=rev)
 
         try:
             SubversionException
         except NameError:
             msg = 'subversion python bindings could not be loaded\n'
             ui.warn(msg)
             raise NoRepo(msg)
 
         self.encoding = locale.getpreferredencoding()
         self.lastrevs = {}
 
         latest = None
         if rev:
             try:
                 latest = int(rev)
             except ValueError:
                 raise NoRepo('svn: revision %s is not an integer' % rev)
         try:
             # Support file://path@rev syntax. Useful e.g. to convert
             # deleted branches.
             at = url.rfind('@')
             if at >= 0:
                 latest = int(url[at+1:])
                 url = url[:at]
         except ValueError, e:
             pass
         self.url = geturl(url)
         self.encoding = 'UTF-8' # Subversion is always nominal UTF-8
         try:
             self.transport = transport.SvnRaTransport(url=self.url)
             self.ra = self.transport.ra
             self.ctx = self.transport.client
             self.base = svn.ra.get_repos_root(self.ra)
             self.module = self.url[len(self.base):]
             self.modulemap = {} # revision, module
             self.commits = {}
             self.paths = {}
             self.uuid = svn.ra.get_uuid(self.ra).decode(self.encoding)
         except SubversionException, e:
             raise NoRepo("couldn't open SVN repo %s" % self.url)
 
         try:
             self.get_blacklist()
         except IOError, e:
             pass
 
         self.last_changed = self.latest(self.module, latest)
 
         self.head = self.revid(self.last_changed)
 
     def setrevmap(self, revmap):
         lastrevs = {}
         for revid in revmap.keys():
             uuid, module, revnum = self.revsplit(revid)
             lastrevnum = lastrevs.setdefault(module, revnum)
             if revnum > lastrevnum:
                 lastrevs[module] = revnum
         self.lastrevs = lastrevs
 
     def exists(self, path, optrev):
         try:
             return svn.client.ls(self.url.rstrip('/') + '/' + path,
                                  optrev, False, self.ctx)
         except SubversionException, err:
             return []
 
     def getheads(self):
         # detect standard /branches, /tags, /trunk layout
         rev = optrev(self.last_changed)
         rpath = self.url.strip('/')
         cfgtrunk = self.ui.config('convert', 'svn.trunk')
         cfgbranches = self.ui.config('convert', 'svn.branches')
         trunk = (cfgtrunk or 'trunk').strip('/')
         branches = (cfgbranches or 'branches').strip('/')
         if self.exists(trunk, rev) and self.exists(branches, rev):
             self.ui.note('found trunk at %r and branches at %r\n' %
                          (trunk, branches))
             oldmodule = self.module
             self.module += '/' + trunk
             lt = self.latest(self.module, self.last_changed)
             self.head = self.revid(lt)
             self.heads = [self.head]
             branchnames = svn.client.ls(rpath + '/' + branches, rev, False,
                                         self.ctx)
             for branch in branchnames.keys():
                 if oldmodule:
                     module = '/' + oldmodule + '/' + branches + '/' + branch
                 else:
                     module = '/' + branches + '/' + branch
                 brevnum = self.latest(module, self.last_changed)
                 brev = self.revid(brevnum, module)
                 self.ui.note('found branch %s at %d\n' % (branch, brevnum))
                 self.heads.append(brev)
         elif cfgtrunk or cfgbranches:
             raise util.Abort('trunk/branch layout expected, but not found')
         else:
             self.ui.note('working with one branch\n')
             self.heads = [self.head]
         return self.heads
 
     def getfile(self, file, rev):
         data, mode = self._getfile(file, rev)
         self.modecache[(file, rev)] = mode
         return data
 
     def getmode(self, file, rev):
         return self.modecache[(file, rev)]
 
     def getchanges(self, rev):
         self.modecache = {}
         (paths, parents) = self.paths[rev]
         files, copies = self.expandpaths(rev, paths, parents)
         files.sort()
         files = zip(files, [rev] * len(files))
 
         # caller caches the result, so free it here to release memory
         del self.paths[rev]
         return (files, copies)
 
     def getcommit(self, rev):
         if rev not in self.commits:
             uuid, module, revnum = self.revsplit(rev)
             self.module = module
             self.reparent(module)
             stop = self.lastrevs.get(module, 0)
             self._fetch_revisions(from_revnum=revnum, to_revnum=stop)
         commit = self.commits[rev]
         # caller caches the result, so free it here to release memory
         del self.commits[rev]
         return commit
 
     def get_log(self, paths, start, end, limit=0, discover_changed_paths=True,
                 strict_node_history=False):
 
         def parent(fp):
             while True:
                 entry = pickle.load(fp)
                 try:
                     orig_paths, revnum, author, date, message = entry
                 except:
                     if entry is None:
                         break
                     raise SubversionException("child raised exception", entry)
                 yield entry
-            
+
         args = [self.url, paths, start, end, limit, discover_changed_paths,
                 strict_node_history]
         arg = encodeargs(args)
         hgexe = util.hgexecutable()
         cmd = '"%s "debugsvnlog""' % util.shellquote(hgexe)
         stdin, stdout = os.popen2(cmd, 'b')
-        
+
         stdin.write(arg)
         stdin.close()
 
         for p in parent(stdout):
             yield p
 
     def gettags(self):
         tags = {}
         start = self.revnum(self.head)
         try:
             for entry in self.get_log(['/tags'], 0, start):
                 orig_paths, revnum, author, date, message = entry
                 for path in orig_paths:
                     if not path.startswith('/tags/'):
                         continue
                     ent = orig_paths[path]
                     source = ent.copyfrom_path
                     rev = ent.copyfrom_rev
                     tag = path.split('/', 2)[2]
                     tags[tag] = self.revid(rev, module=source)
         except SubversionException, (inst, num):
             self.ui.note('no tags found at revision %d\n' % start)
         return tags
 
     # -- helper functions --
 
     def revid(self, revnum, module=None):
         if not module:
             module = self.module
         return (u"svn:%s%s@%s" % (self.uuid, module, revnum)).decode(self.encoding)
 
     def revnum(self, rev):
         return int(rev.split('@')[-1])
 
     def revsplit(self, rev):
         url, revnum = rev.encode(self.encoding).split('@', 1)
         revnum = int(revnum)
         parts = url.split('/', 1)
         uuid = parts.pop(0)[4:]
         mod = ''
         if parts:
             mod = '/' + parts[0]
         return uuid, mod, revnum
 
     def latest(self, path, stop=0):
         'find the latest revision affecting path, up to stop'
         if not stop:
             stop = svn.ra.get_latest_revnum(self.ra)
         try:
             self.reparent('')
             dirent = svn.ra.stat(self.ra, path.strip('/'), stop)
             self.reparent(self.module)
         except SubversionException:
             dirent = None
         if not dirent:
             raise util.Abort('%s not found up to revision %d' % (path, stop))
 
         return dirent.created_rev
 
     def get_blacklist(self):
         """Avoid certain revision numbers.
         It is not uncommon for two nearby revisions to cancel each other
         out, e.g. 'I copied trunk into a subdirectory of itself instead
         of making a branch'. The converted repository is significantly
         smaller if we ignore such revisions."""
         self.blacklist = set()
         blacklist = self.blacklist
         for line in file("blacklist.txt", "r"):
             if not line.startswith("#"):
                 try:
                     svn_rev = int(line.strip())
                     blacklist.add(svn_rev)
                 except ValueError, e:
                     pass # not an integer or a comment
 
     def is_blacklisted(self, svn_rev):
         return svn_rev in self.blacklist
 
     def reparent(self, module):
         svn_url = self.base + module
         self.ui.debug("reparent to %s\n" % svn_url.encode(self.encoding))
         svn.ra.reparent(self.ra, svn_url.encode(self.encoding))
 
     def expandpaths(self, rev, paths, parents):
         def get_entry_from_path(path, module=self.module):
             # Given the repository url of this wc, say
             #   "http://server/plone/CMFPlone/branches/Plone-2_0-branch"
             # extract the "entry" portion (a relative path) from what
             # svn log --xml says, ie
             #   "/CMFPlone/branches/Plone-2_0-branch/tests/PloneTestCase.py"
             # that is to say "tests/PloneTestCase.py"
             if path.startswith(module):
                 relative = path[len(module):]
                 if relative.startswith('/'):
                     return relative[1:]
                 else:
                     return relative
 
             # The path is outside our tracked tree...
             self.ui.debug('%r is not under %r, ignoring\n' % (path, module))
             return None
 
         entries = []
         copyfrom = {} # Map of entrypath, revision for finding source of deleted revisions.
         copies = {}
         revnum = self.revnum(rev)
 
         if revnum in self.modulemap:
             new_module = self.modulemap[revnum]
             if new_module != self.module:
                 self.module = new_module
                 self.reparent(self.module)
 
         for path, ent in paths:
             entrypath = get_entry_from_path(path, module=self.module)
             entry = entrypath.decode(self.encoding)
 
             kind = svn.ra.check_path(self.ra, entrypath, revnum)
             if kind == svn.core.svn_node_file:
                 if ent.copyfrom_path:
                     copyfrom_path = get_entry_from_path(ent.copyfrom_path)
                     if copyfrom_path:
                         self.ui.debug("Copied to %s from %s@%s\n" % (entry, copyfrom_path, ent.copyfrom_rev))
                         # It's probably important for hg that the source
                         # exists in the revision's parent, not just the
                         # ent.copyfrom_rev
                         fromkind = svn.ra.check_path(self.ra, copyfrom_path, ent.copyfrom_rev)
                         if fromkind != 0:
                             copies[self.recode(entry)] = self.recode(copyfrom_path)
                 entries.append(self.recode(entry))
             elif kind == 0: # gone, but had better be a deleted *file*
                 self.ui.debug("gone from %s\n" % ent.copyfrom_rev)
 
                 # if a branch is created but entries are removed in the same
                 # changeset, get the right fromrev
                 if parents:
                     uuid, old_module, fromrev = self.revsplit(parents[0])
                 else:
                     fromrev = revnum - 1
                     # might always need to be revnum - 1 in these 3 lines?
                     old_module = self.modulemap.get(fromrev, self.module)
 
                 basepath = old_module + "/" + get_entry_from_path(path, module=self.module)
                 entrypath = old_module + "/" + get_entry_from_path(path, module=self.module)
 
                 def lookup_parts(p):
                     rc = None
                     parts = p.split("/")
                     for i in range(len(parts)):
                         part = "/".join(parts[:i])
                         info = part, copyfrom.get(part, None)
                         if info[1] is not None:
                             self.ui.debug("Found parent directory %s\n" % info[1])
                             rc = info
                     return rc
 
                 self.ui.debug("base, entry %s %s\n" % (basepath, entrypath))
 
                 frompath, froment = lookup_parts(entrypath) or (None, revnum - 1)
 
                 # need to remove fragment from lookup_parts and replace with copyfrom_path
                 if frompath is not None:
                     self.ui.debug("munge-o-matic\n")
                     self.ui.debug(entrypath + '\n')
                     self.ui.debug(entrypath[len(frompath):] + '\n')
                     entrypath = froment.copyfrom_path + entrypath[len(frompath):]
                     fromrev = froment.copyfrom_rev
                     self.ui.debug("Info: %s %s %s %s\n" % (frompath, froment, ent, entrypath))
 
                 fromkind = svn.ra.check_path(self.ra, entrypath, fromrev)
                 if fromkind == svn.core.svn_node_file:   # a deleted file
                     entries.append(self.recode(entry))
                 elif fromkind == svn.core.svn_node_dir:
                     # print "Deleted/moved non-file:", revnum, path, ent
                     # children = self._find_children(path, revnum - 1)
                     # print "find children %s@%d from %d action %s" % (path, revnum, ent.copyfrom_rev, ent.action)
                     # Sometimes this is tricky. For example: in
                     # The Subversion Repository revision 6940 a dir
                     # was copied and one of its files was deleted
                     # from the new location in the same commit. This
                     # code can't deal with that yet.
                     if ent.action == 'C':
                         children = self._find_children(path, fromrev)
                     else:
                         oroot = entrypath.strip('/')
                         nroot = path.strip('/')
                         children = self._find_children(oroot, fromrev)
                         children = [s.replace(oroot,nroot) for s in children]
                     # Mark all [files, not directories] as deleted.
                     for child in children:
                         # Can we move a child directory and its
                         # parent in the same commit? (probably can). Could
                         # cause problems if instead of revnum -1,
                         # we have to look in (copyfrom_path, revnum - 1)
                         entrypath = get_entry_from_path("/" + child, module=old_module)
                         if entrypath:
                             entry = self.recode(entrypath.decode(self.encoding))
                             if entry in copies:
                                 # deleted file within a copy
                                 del copies[entry]
                             else:
                                 entries.append(entry)
                 else:
                     self.ui.debug('unknown path in revision %d: %s\n' % \
                                   (revnum, path))
             elif kind == svn.core.svn_node_dir:
                 # Should probably synthesize normal file entries
                 # and handle as above to clean up copy/rename handling.
 
                 # If the directory just had a prop change,
                 # then we shouldn't need to look for its children.
                 # Also this could create duplicate entries. Not sure
                 # whether this will matter. Maybe should make entries a set.
                 # print "Changed directory", revnum, path, ent.action, ent.copyfrom_path, ent.copyfrom_rev
                 # This will fail if a directory was copied
                 # from another branch and then some of its files
                 # were deleted in the same transaction.
                 children = self._find_children(path, revnum)
                 children.sort()
                 for child in children:
                     # Can we move a child directory and its
                     # parent in the same commit? (probably can). Could
                     # cause problems if instead of revnum -1,
                     # we have to look in (copyfrom_path, revnum - 1)
                     entrypath = get_entry_from_path("/" + child, module=self.module)
                     # print child, self.module, entrypath
                     if entrypath:
                         # Need to filter out directories here...
                         kind = svn.ra.check_path(self.ra, entrypath, revnum)
                         if kind != svn.core.svn_node_dir:
                             entries.append(self.recode(entrypath))
 
                 # Copies here (must copy all from source)
                 # Probably not a real problem for us if
                 # source does not exist
 
                 # Can do this with the copy command "hg copy"
                 # if ent.copyfrom_path:
                 #     copyfrom_entry = get_entry_from_path(ent.copyfrom_path.decode(self.encoding),
                 #             module=self.module)
                 #     copyto_entry = entrypath
                 #
                 #     print "copy directory", copyfrom_entry, 'to', copyto_entry
                 #
                 #     copies.append((copyfrom_entry, copyto_entry))
 
                 if ent.copyfrom_path:
                     copyfrom_path = ent.copyfrom_path.decode(self.encoding)
                     copyfrom_entry = get_entry_from_path(copyfrom_path, module=self.module)
                     if copyfrom_entry:
                         copyfrom[path] = ent
                         self.ui.debug("mark %s came from %s\n" % (path, copyfrom[path]))
 
                         # Good, /probably/ a regular copy. Really should check
                         # to see whether the parent revision actually contains
                         # the directory in question.
                         children = self._find_children(self.recode(copyfrom_path), ent.copyfrom_rev)
                         children.sort()
                         for child in children:
                             entrypath = get_entry_from_path("/" + child, module=self.module)
                             if entrypath:
                                 entry = entrypath.decode(self.encoding)
                                 # print "COPY COPY From", copyfrom_entry, entry
                                 copyto_path = path + entry[len(copyfrom_entry):]
                                 copyto_entry =  get_entry_from_path(copyto_path, module=self.module)
                                 # print "COPY", entry, "COPY To", copyto_entry
                                 copies[self.recode(copyto_entry)] = self.recode(entry)
                                 # copy from quux splort/quuxfile
 
         return (entries, copies)
 
     def _fetch_revisions(self, from_revnum = 0, to_revnum = 347):
         self.child_cset = None
         def parselogentry(orig_paths, revnum, author, date, message):
             self.ui.debug("parsing revision %d (%d changes)\n" %
                           (revnum, len(orig_paths)))
 
             if revnum in self.modulemap:
                 new_module = self.modulemap[revnum]
                 if new_module != self.module:
                     self.module = new_module
                     self.reparent(self.module)
 
             rev = self.revid(revnum)
             # branch log might return entries for a parent we already have
             if (rev in self.commits or
                 (revnum < self.lastrevs.get(self.module, 0))):
                 return
 
             parents = []
             orig_paths = orig_paths.items()
             orig_paths.sort()
-            
+
             # check whether this revision is the start of a branch
             path, ent = orig_paths and orig_paths[0] or (None, None)
             if ent and path == self.module:
                 if ent.copyfrom_path:
                     # ent.copyfrom_rev may not be the actual last revision
                     prev = self.latest(ent.copyfrom_path, ent.copyfrom_rev)
                     self.modulemap[prev] = ent.copyfrom_path
                     parents = [self.revid(prev, ent.copyfrom_path)]
                     self.ui.note('found parent of branch %s at %d: %s\n' % \
                                      (self.module, prev, ent.copyfrom_path))
                 else:
                     self.ui.debug("No copyfrom path, don't know what to do.\n")
 
             self.modulemap[revnum] = self.module # track backwards in time
 
             paths = []
             # filter out unrelated paths
             for path, ent in orig_paths:
                 if not path.startswith(self.module):
                     self.ui.debug("boring@%s: %s\n" % (revnum, path))
                     continue
                 paths.append((path, ent))
 
             self.paths[rev] = (paths, parents)
 
             # Example SVN datetime. Includes microseconds.
             # ISO-8601 conformant
             # '2007-01-04T17:35:00.902377Z'
             date = util.parsedate(date[:18] + " UTC", ["%Y-%m-%dT%H:%M:%S"])
 
             log = message and self.recode(message)
             author = author and self.recode(author) or ''
             try:
                 branch = self.module.split("/")[-1]
                 if branch == 'trunk':
                     branch = ''
             except IndexError:
                 branch = None
 
             cset = commit(author=author,
                           date=util.datestr(date),
                           desc=log,
                           parents=parents,
                           branch=branch,
                           rev=rev.encode('utf-8'))
 
             self.commits[rev] = cset
             if self.child_cset and not self.child_cset.parents:
                 self.child_cset.parents = [rev]
             self.child_cset = cset
 
         self.ui.note('fetching revision log for "%s" from %d to %d\n' %
                      (self.module, from_revnum, to_revnum))
 
         try:
             for entry in self.get_log([self.module], from_revnum, to_revnum):
                 orig_paths, revnum, author, date, message = entry
                 if self.is_blacklisted(revnum):
                     self.ui.note('skipping blacklisted revision %d\n' % revnum)
                     continue
                 if orig_paths is None:
                     self.ui.debug('revision %d has no entries\n' % revnum)
                     continue
                 parselogentry(orig_paths, revnum, author, date, message)
         except SubversionException, (inst, num):
             if num == svn.core.SVN_ERR_FS_NO_SUCH_REVISION:
                 raise NoSuchRevision(branch=self,
                     revision="Revision number %d" % to_revnum)
             raise
 
     def _getfile(self, file, rev):
         io = StringIO()
         # TODO: ra.get_file transmits the whole file instead of diffs.
         mode = ''
         try:
             revnum = self.revnum(rev)
             if self.module != self.modulemap[revnum]:
                 self.module = self.modulemap[revnum]
                 self.reparent(self.module)
             info = svn.ra.get_file(self.ra, file, revnum, io)
             if isinstance(info, list):
                 info = info[-1]
             mode = ("svn:executable" in info) and 'x' or ''
             mode = ("svn:special" in info) and 'l' or mode
         except SubversionException, e:
             notfound = (svn.core.SVN_ERR_FS_NOT_FOUND,
                 svn.core.SVN_ERR_RA_DAV_PATH_NOT_FOUND)
             if e.apr_err in notfound: # File not found
                 raise IOError()
             raise
         data = io.getvalue()
         if mode == 'l':
             link_prefix = "link "
             if data.startswith(link_prefix):
                 data = data[len(link_prefix):]
         return data, mode
 
     def _find_children(self, path, revnum):
         path = path.strip('/')
         pool = Pool()
         rpath = '/'.join([self.base, path]).strip('/')
         return ['%s/%s' % (path, x) for x in svn.client.ls(rpath, optrev(revnum), True, self.ctx, pool).keys()]

hgext/extdiff.py

@@ -1,215 +1,215 b''
 # extdiff.py - external diff program support for mercurial
 #
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 #
 # The `extdiff' Mercurial extension allows you to use external programs
 # to compare revisions, or revision with working dir.  The external diff
 # programs are called with a configurable set of options and two
 # non-option arguments: paths to directories containing snapshots of
 # files to compare.
 #
 # To enable this extension:
 #
 #   [extensions]
 #   hgext.extdiff =
 #
 # The `extdiff' extension also allows to configure new diff commands, so
 # you do not need to type "hg extdiff -p kdiff3" always.
 #
 #   [extdiff]
 #   # add new command that runs GNU diff(1) in 'context diff' mode
 #   cmd.cdiff = gdiff
 #   opts.cdiff = -Nprc5
 
 #   # add new command called vdiff, runs kdiff3
 #   cmd.vdiff = kdiff3
 
 #   # add new command called meld, runs meld (no need to name twice)
 #   cmd.meld =
 
 #   # add new command called vimdiff, runs gvimdiff with DirDiff plugin
 #   #(see http://www.vim.org/scripts/script.php?script_id=102)
 #   # Non english user, be sure to put "let g:DirDiffDynamicDiffText = 1" in
 #   # your .vimrc
 #   cmd.vimdiff = gvim
 #   opts.vimdiff = -f '+next' '+execute "DirDiff" argv(0) argv(1)'
 #
 # Each custom diff commands can have two parts: a `cmd' and an `opts'
 # part.  The cmd.xxx option defines the name of an executable program
 # that will be run, and opts.xxx defines a set of command-line options
 # which will be inserted to the command between the program name and
 # the files/directories to diff (i.e. the cdiff example above).
 #
 # You can use -I/-X and list of file or directory names like normal
 # "hg diff" command.  The `extdiff' extension makes snapshots of only
 # needed files, so running the external diff program will actually be
 # pretty fast (at least faster than having to compare the entire tree).
 
 from mercurial.i18n import _
 from mercurial.node import *
 from mercurial import cmdutil, util
 import os, shutil, tempfile
 
 
 def snapshot_node(ui, repo, files, node, tmproot):
     '''snapshot files as of some revision'''
     mf = repo.changectx(node).manifest()
     dirname = os.path.basename(repo.root)
     if dirname == "":
         dirname = "root"
     dirname = '%s.%s' % (dirname, short(node))
     base = os.path.join(tmproot, dirname)
     os.mkdir(base)
     ui.note(_('making snapshot of %d files from rev %s\n') %
-                 (len(files), short(node)))
+            (len(files), short(node)))
     for fn in files:
         if not fn in mf:
             # skipping new file after a merge ?
             continue
         wfn = util.pconvert(fn)
         ui.note('  %s\n' % wfn)
         dest = os.path.join(base, wfn)
         destdir = os.path.dirname(dest)
         if not os.path.isdir(destdir):
             os.makedirs(destdir)
         data = repo.wwritedata(wfn, repo.file(wfn).read(mf[wfn]))
         open(dest, 'wb').write(data)
     return dirname
 
 
 def snapshot_wdir(ui, repo, files, tmproot):
     '''snapshot files from working directory.
     if not using snapshot, -I/-X does not work and recursive diff
     in tools like kdiff3 and meld displays too many files.'''
     dirname = os.path.basename(repo.root)
     if dirname == "":
         dirname = "root"
     base = os.path.join(tmproot, dirname)
     os.mkdir(base)
     ui.note(_('making snapshot of %d files from working dir\n') %
-                 (len(files)))
+            (len(files)))
     for fn in files:
         wfn = util.pconvert(fn)
         ui.note('  %s\n' % wfn)
         dest = os.path.join(base, wfn)
         destdir = os.path.dirname(dest)
         if not os.path.isdir(destdir):
             os.makedirs(destdir)
         fp = open(dest, 'wb')
         for chunk in util.filechunkiter(repo.wopener(wfn)):
             fp.write(chunk)
     return dirname
-    
+
 
 def dodiff(ui, repo, diffcmd, diffopts, pats, opts):
     node1, node2 = cmdutil.revpair(repo, opts['rev'])
     files, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
     modified, added, removed, deleted, unknown = repo.status(
         node1, node2, files, match=matchfn)[:5]
     if not (modified or added or removed):
         return 0
 
     tmproot = tempfile.mkdtemp(prefix='extdiff.')
     dir2root = ''
     try:
         # Always make a copy of node1
         dir1 = snapshot_node(ui, repo, modified + removed, node1, tmproot)
         changes = len(modified) + len(removed) + len(added)
 
         # If node2 in not the wc or there is >1 change, copy it
         if node2:
             dir2 = snapshot_node(ui, repo, modified + added, node2, tmproot)
         elif changes > 1:
             dir2 = snapshot_wdir(ui, repo, modified + added, tmproot)
         else:
             # This lets the diff tool open the changed file directly
             dir2 = ''
             dir2root = repo.root
 
         # If only one change, diff the files instead of the directories
         if changes == 1 :
             if len(modified):
                 dir1 = os.path.join(dir1, util.localpath(modified[0]))
-                dir2 = os.path.join(dir2root, dir2, util.localpath(modified[0]))  
+                dir2 = os.path.join(dir2root, dir2, util.localpath(modified[0]))
             elif len(removed) :
                 dir1 = os.path.join(dir1, util.localpath(removed[0]))
                 dir2 = os.devnull
             else:
                 dir1 = os.devnull
-                dir2 = os.path.join(dir2root, dir2, util.localpath(added[0]))  
-    
+                dir2 = os.path.join(dir2root, dir2, util.localpath(added[0]))
+
         cmdline = ('%s %s %s %s' %
                    (util.shellquote(diffcmd), ' '.join(diffopts),
                     util.shellquote(dir1), util.shellquote(dir2)))
         ui.debug('running %r in %s\n' % (cmdline, tmproot))
         util.system(cmdline, cwd=tmproot)
         return 1
     finally:
         ui.note(_('cleaning up temp directory\n'))
         shutil.rmtree(tmproot)
 
 def extdiff(ui, repo, *pats, **opts):
     '''use external program to diff repository (or selected files)
 
     Show differences between revisions for the specified files, using
     an external program.  The default program used is diff, with
     default options "-Npru".
 
     To select a different program, use the -p option.  The program
     will be passed the names of two directories to compare.  To pass
     additional options to the program, use the -o option.  These will
     be passed before the names of the directories to compare.
 
     When two revision arguments are given, then changes are
     shown between those revisions. If only one revision is
     specified then that revision is compared to the working
     directory, and, when no revisions are specified, the
     working directory files are compared to its parent.'''
     program = opts['program'] or 'diff'
     if opts['program']:
         option = opts['option']
     else:
         option = opts['option'] or ['-Npru']
     return dodiff(ui, repo, program, option, pats, opts)
 
 cmdtable = {
     "extdiff":
     (extdiff,
      [('p', 'program', '', _('comparison program to run')),
       ('o', 'option', [], _('pass option to comparison program')),
       ('r', 'rev', [], _('revision')),
       ('I', 'include', [], _('include names matching the given patterns')),
       ('X', 'exclude', [], _('exclude names matching the given patterns'))],
      _('hg extdiff [OPT]... [FILE]...')),
     }
 
 def uisetup(ui):
     for cmd, path in ui.configitems('extdiff'):
         if not cmd.startswith('cmd.'): continue
         cmd = cmd[4:]
         if not path: path = cmd
         diffopts = ui.config('extdiff', 'opts.' + cmd, '')
         diffopts = diffopts and [diffopts] or []
         def save(cmd, path, diffopts):
             '''use closure to save diff command to use'''
             def mydiff(ui, repo, *pats, **opts):
                 return dodiff(ui, repo, path, diffopts, pats, opts)
             mydiff.__doc__ = '''use %(path)r to diff repository (or selected files)
 
             Show differences between revisions for the specified
             files, using the %(path)r program.
 
             When two revision arguments are given, then changes are
             shown between those revisions. If only one revision is
             specified then that revision is compared to the working
             directory, and, when no revisions are specified, the
             working directory files are compared to its parent.''' % {
                 'path': path,
                 }
             return mydiff
         cmdtable[cmd] = (save(cmd, path, diffopts),
                          cmdtable['extdiff'][1][1:],
                          _('hg %s [OPTION]... [FILE]...') % cmd)

hgext/imerge.py

@@ -1,361 +1,361 b''
 # Copyright (C) 2007 Brendan Cully <[e-mail]>
 # Published under the GNU GPL
 
 '''
 imerge - interactive merge
 '''
 
 from mercurial.i18n import _
 from mercurial.node import *
 from mercurial import commands, cmdutil, fancyopts, hg, merge, util
 import os, tarfile
 
 class InvalidStateFileException(Exception): pass
 
 class ImergeStateFile(object):
     def __init__(self, im):
         self.im = im
 
     def save(self, dest):
         tf = tarfile.open(dest, 'w:gz')
 
         st = os.path.join(self.im.path, 'status')
         tf.add(st, os.path.join('.hg', 'imerge', 'status'))
 
         for f in self.im.resolved:
             (fd, fo) = self.im.conflicts[f]
             abssrc = self.im.repo.wjoin(fd)
             tf.add(abssrc, fd)
 
         tf.close()
 
     def load(self, source):
         wlock = self.im.repo.wlock()
         lock = self.im.repo.lock()
 
         tf = tarfile.open(source, 'r')
         contents = tf.getnames()
         statusfile = os.path.join('.hg', 'imerge', 'status')
         if statusfile not in contents:
             raise InvalidStateFileException('no status file')
 
         tf.extract(statusfile, self.im.repo.root)
         p1, p2 = self.im.load()
         if self.im.repo.dirstate.parents()[0] != p1.node():
             hg.clean(self.im.repo, p1.node())
         self.im.start(p2.node())
         for tarinfo in tf:
             tf.extract(tarinfo, self.im.repo.root)
         self.im.load()
 
 class Imerge(object):
     def __init__(self, ui, repo):
         self.ui = ui
         self.repo = repo
 
         self.path = repo.join('imerge')
         self.opener = util.opener(self.path)
 
         self.wctx = self.repo.workingctx()
         self.conflicts = {}
         self.resolved = []
 
     def merging(self):
         return len(self.wctx.parents()) > 1
 
     def load(self):
         # status format. \0-delimited file, fields are
         # p1, p2, conflict count, conflict filenames, resolved filenames
         # conflict filenames are tuples of localname, remoteorig, remotenew
 
         statusfile = self.opener('status')
 
         status = statusfile.read().split('\0')
         if len(status) < 3:
             raise util.Abort('invalid imerge status file')
 
         try:
             parents = [self.repo.changectx(n) for n in status[:2]]
         except LookupError:
             raise util.Abort('merge parent %s not in repository' % short(p))
 
         status = status[2:]
         conflicts = int(status.pop(0)) * 3
         self.resolved = status[conflicts:]
         for i in xrange(0, conflicts, 3):
             self.conflicts[status[i]] = (status[i+1], status[i+2])
 
         return parents
 
     def save(self):
         lock = self.repo.lock()
 
         if not os.path.isdir(self.path):
             os.mkdir(self.path)
         statusfile = self.opener('status', 'wb')
 
         out = [hex(n.node()) for n in self.wctx.parents()]
         out.append(str(len(self.conflicts)))
         conflicts = self.conflicts.items()
         conflicts.sort()
         for fw, fd_fo in conflicts:
             out.append(fw)
             out.extend(fd_fo)
         out.extend(self.resolved)
 
         statusfile.write('\0'.join(out))
 
     def remaining(self):
         return [f for f in self.conflicts if f not in self.resolved]
 
     def filemerge(self, fn):
         wlock = self.repo.wlock()
 
         (fd, fo) = self.conflicts[fn]
         p2 = self.wctx.parents()[1]
         return merge.filemerge(self.repo, fn, fd, fo, self.wctx, p2)
 
     def start(self, rev=None):
         _filemerge = merge.filemerge
         def filemerge(repo, fw, fd, fo, wctx, mctx):
             self.conflicts[fw] = (fd, fo)
 
         merge.filemerge = filemerge
         commands.merge(self.ui, self.repo, rev=rev)
         merge.filemerge = _filemerge
 
         self.wctx = self.repo.workingctx()
         self.save()
 
     def resume(self):
         self.load()
 
         dp = self.repo.dirstate.parents()
         p1, p2 = self.wctx.parents()
         if p1.node() != dp[0] or p2.node() != dp[1]:
             raise util.Abort('imerge state does not match working directory')
 
     def next(self):
         remaining = self.remaining()
         return remaining and remaining[0]
 
     def resolve(self, files):
         resolved = dict.fromkeys(self.resolved)
         for fn in files:
             if fn not in self.conflicts:
                 raise util.Abort('%s is not in the merge set' % fn)
             resolved[fn] = True
         self.resolved = resolved.keys()
         self.resolved.sort()
         self.save()
         return 0
 
     def unresolve(self, files):
         resolved = dict.fromkeys(self.resolved)
         for fn in files:
             if fn not in resolved:
                 raise util.Abort('%s is not resolved' % fn)
             del resolved[fn]
         self.resolved = resolved.keys()
         self.resolved.sort()
         self.save()
         return 0
 
     def pickle(self, dest):
         '''write current merge state to file to be resumed elsewhere'''
         state = ImergeStateFile(self)
         return state.save(dest)
 
     def unpickle(self, source):
         '''read merge state from file'''
         state = ImergeStateFile(self)
         return state.load(source)
 
 def load(im, source):
     if im.merging():
         raise util.Abort('there is already a merge in progress '
                          '(update -C <rev> to abort it)' )
     m, a, r, d =  im.repo.status()[:4]
     if m or a or r or d:
         raise util.Abort('working directory has uncommitted changes')
 
     rc = im.unpickle(source)
     if not rc:
         status(im)
     return rc
 
 def merge_(im, filename=None):
     if not filename:
         filename = im.next()
         if not filename:
             im.ui.write('all conflicts resolved\n')
             return 0
 
     rc = im.filemerge(filename)
     if not rc:
         im.resolve([filename])
         if not im.next():
             im.ui.write('all conflicts resolved\n')
             return 0
     return rc
 
 def next(im):
     n = im.next()
     if n:
         im.ui.write('%s\n' % n)
     else:
         im.ui.write('all conflicts resolved\n')
     return 0
 
 def resolve(im, *files):
     if not files:
         raise util.Abort('resolve requires at least one filename')
     return im.resolve(files)
 
 def save(im, dest):
     return im.pickle(dest)
 
 def status(im, **opts):
     if not opts.get('resolved') and not opts.get('unresolved'):
         opts['resolved'] = True
         opts['unresolved'] = True
 
     if im.ui.verbose:
         p1, p2 = [short(p.node()) for p in im.wctx.parents()]
         im.ui.note(_('merging %s and %s\n') % (p1, p2))
 
     conflicts = im.conflicts.keys()
     conflicts.sort()
     remaining = dict.fromkeys(im.remaining())
     st = []
     for fn in conflicts:
         if opts.get('no_status'):
             mode = ''
         elif fn in remaining:
             mode = 'U '
         else:
             mode = 'R '
         if ((opts.get('resolved') and fn not in remaining)
             or (opts.get('unresolved') and fn in remaining)):
             st.append((mode, fn))
     st.sort()
     for (mode, fn) in st:
         if im.ui.verbose:
             fo, fd = im.conflicts[fn]
             if fd != fn:
                 fn = '%s (%s)' % (fn, fd)
         im.ui.write('%s%s\n' % (mode, fn))
     if opts.get('unresolved') and not remaining:
         im.ui.write(_('all conflicts resolved\n'))
 
     return 0
 
 def unresolve(im, *files):
     if not files:
         raise util.Abort('unresolve requires at least one filename')
     return im.unresolve(files)
 
 subcmdtable = {
     'load': (load, []),
     'merge': (merge_, []),
     'next': (next, []),
     'resolve': (resolve, []),
     'save': (save, []),
     'status': (status,
                [('n', 'no-status', None, _('hide status prefix')),
                 ('', 'resolved', None, _('only show resolved conflicts')),
                 ('', 'unresolved', None, _('only show unresolved conflicts'))]),
     'unresolve': (unresolve, [])
 }
 
 def dispatch(im, args, opts):
     def complete(s, choices):
         candidates = []
         for choice in choices:
             if choice.startswith(s):
                 candidates.append(choice)
         return candidates
 
     c, args = args[0], list(args[1:])
     cmd = complete(c, subcmdtable.keys())
     if not cmd:
         raise cmdutil.UnknownCommand('imerge ' + c)
     if len(cmd) > 1:
         cmd.sort()
         raise cmdutil.AmbiguousCommand('imerge ' + c, cmd)
     cmd = cmd[0]
 
     func, optlist = subcmdtable[cmd]
     opts = {}
     try:
         args = fancyopts.fancyopts(args, optlist, opts)
         return func(im, *args, **opts)
     except fancyopts.getopt.GetoptError, inst:
         raise cmdutil.ParseError('imerge', '%s: %s' % (cmd, inst))
     except TypeError:
         raise cmdutil.ParseError('imerge', _('%s: invalid arguments') % cmd)
 
 def imerge(ui, repo, *args, **opts):
     '''interactive merge
 
     imerge lets you split a merge into pieces. When you start a merge
     with imerge, the names of all files with conflicts are recorded.
     You can then merge any of these files, and if the merge is
     successful, they will be marked as resolved. When all files are
     resolved, the merge is complete.
 
     If no merge is in progress, hg imerge [rev] will merge the working
     directory with rev (defaulting to the other head if the repository
     only has two heads). You may also resume a saved merge with
     hg imerge load <file>.
 
     If a merge is in progress, hg imerge will default to merging the
     next unresolved file.
 
     The following subcommands are available:
 
     status:
       show the current state of the merge
     next:
       show the next unresolved file merge
     merge [<file>]:
       merge <file>. If the file merge is successful, the file will be
       recorded as resolved. If no file is given, the next unresolved
       file will be merged.
     resolve <file>...:
       mark files as successfully merged
     unresolve <file>...:
       mark files as requiring merging.
     save <file>:
       save the state of the merge to a file to be resumed elsewhere
     load <file>:
       load the state of the merge from a file created by save
     '''
 
     im = Imerge(ui, repo)
 
     if im.merging():
         im.resume()
     else:
         rev = opts.get('rev')
         if rev and args:
             raise util.Abort('please specify just one revision')
-        
+
         if len(args) == 2 and args[0] == 'load':
             pass
         else:
             if args:
                 rev = args[0]
             im.start(rev=rev)
             args = ['status']
 
     if not args:
         args = ['merge']
 
     return dispatch(im, args, opts)
 
 cmdtable = {
     '^imerge':
     (imerge,
      [('r', 'rev', '', _('revision to merge'))], 'hg imerge [command]')
 }

hgext/record.py

@@ -1,382 +1,382 b''
 # record.py
 #
 # Copyright 2007 Bryan O'Sullivan <[e-mail]>
 #
 # This software may be used and distributed according to the terms of
 # the GNU General Public License, incorporated herein by reference.
 
 '''interactive change selection during commit'''
 
 from mercurial.i18n import _
 from mercurial import cmdutil, commands, cmdutil, hg, mdiff, patch, revlog
 from mercurial import util
 import copy, cStringIO, errno, operator, os, re, shutil, tempfile
 
 lines_re = re.compile(r'@@ -(\d+),(\d+) \+(\d+),(\d+) @@\s*(.*)')
 
 def scanpatch(fp):
     lr = patch.linereader(fp)
 
     def scanwhile(first, p):
         lines = [first]
         while True:
             line = lr.readline()
             if not line:
                 break
             if p(line):
                 lines.append(line)
             else:
                 lr.push(line)
                 break
         return lines
 
     while True:
         line = lr.readline()
         if not line:
             break
         if line.startswith('diff --git a/'):
             def notheader(line):
                 s = line.split(None, 1)
                 return not s or s[0] not in ('---', 'diff')
             header = scanwhile(line, notheader)
             fromfile = lr.readline()
             if fromfile.startswith('---'):
                 tofile = lr.readline()
                 header += [fromfile, tofile]
             else:
                 lr.push(fromfile)
             yield 'file', header
         elif line[0] == ' ':
             yield 'context', scanwhile(line, lambda l: l[0] in ' \\')
         elif line[0] in '-+':
             yield 'hunk', scanwhile(line, lambda l: l[0] in '-+\\')
         else:
             m = lines_re.match(line)
             if m:
                 yield 'range', m.groups()
             else:
                 raise patch.PatchError('unknown patch content: %r' % line)
 
 class header(object):
     diff_re = re.compile('diff --git a/(.*) b/(.*)$')
     allhunks_re = re.compile('(?:index|new file|deleted file) ')
     pretty_re = re.compile('(?:new file|deleted file) ')
     special_re = re.compile('(?:index|new|deleted|copy|rename) ')
 
     def __init__(self, header):
         self.header = header
         self.hunks = []
 
     def binary(self):
         for h in self.header:
             if h.startswith('index '):
                 return True
-        
+
     def pretty(self, fp):
         for h in self.header:
             if h.startswith('index '):
                 fp.write(_('this modifies a binary file (all or nothing)\n'))
                 break
             if self.pretty_re.match(h):
                 fp.write(h)
                 if self.binary():
                     fp.write(_('this is a binary file\n'))
                 break
             if h.startswith('---'):
                 fp.write(_('%d hunks, %d lines changed\n') %
                          (len(self.hunks),
                           sum([h.added + h.removed for h in self.hunks])))
                 break
             fp.write(h)
 
     def write(self, fp):
         fp.write(''.join(self.header))
 
     def allhunks(self):
         for h in self.header:
             if self.allhunks_re.match(h):
                 return True
 
     def files(self):
         fromfile, tofile = self.diff_re.match(self.header[0]).groups()
         if fromfile == tofile:
             return [fromfile]
         return [fromfile, tofile]
 
     def filename(self):
         return self.files()[-1]
 
     def __repr__(self):
         return '<header %s>' % (' '.join(map(repr, self.files())))
 
     def special(self):
         for h in self.header:
             if self.special_re.match(h):
                 return True
 
 def countchanges(hunk):
     add = len([h for h in hunk if h[0] == '+'])
     rem = len([h for h in hunk if h[0] == '-'])
     return add, rem
 
 class hunk(object):
     maxcontext = 3
 
     def __init__(self, header, fromline, toline, proc, before, hunk, after):
         def trimcontext(number, lines):
             delta = len(lines) - self.maxcontext
             if False and delta > 0:
                 return number + delta, lines[:self.maxcontext]
             return number, lines
 
         self.header = header
         self.fromline, self.before = trimcontext(fromline, before)
         self.toline, self.after = trimcontext(toline, after)
         self.proc = proc
         self.hunk = hunk
         self.added, self.removed = countchanges(self.hunk)
 
     def write(self, fp):
         delta = len(self.before) + len(self.after)
         fromlen = delta + self.removed
         tolen = delta + self.added
         fp.write('@@ -%d,%d +%d,%d @@%s\n' %
                  (self.fromline, fromlen, self.toline, tolen,
                   self.proc and (' ' + self.proc)))
         fp.write(''.join(self.before + self.hunk + self.after))
 
     pretty = write
 
     def filename(self):
         return self.header.filename()
 
     def __repr__(self):
         return '<hunk %r@%d>' % (self.filename(), self.fromline)
 
 def parsepatch(fp):
     class parser(object):
         def __init__(self):
             self.fromline = 0
             self.toline = 0
             self.proc = ''
             self.header = None
             self.context = []
             self.before = []
             self.hunk = []
             self.stream = []
 
         def addrange(self, (fromstart, fromend, tostart, toend, proc)):
             self.fromline = int(fromstart)
             self.toline = int(tostart)
             self.proc = proc
 
         def addcontext(self, context):
             if self.hunk:
                 h = hunk(self.header, self.fromline, self.toline, self.proc,
                          self.before, self.hunk, context)
                 self.header.hunks.append(h)
                 self.stream.append(h)
                 self.fromline += len(self.before) + h.removed
                 self.toline += len(self.before) + h.added
                 self.before = []
                 self.hunk = []
                 self.proc = ''
             self.context = context
 
         def addhunk(self, hunk):
             if self.context:
                 self.before = self.context
                 self.context = []
             self.hunk = data
 
         def newfile(self, hdr):
             self.addcontext([])
             h = header(hdr)
             self.stream.append(h)
             self.header = h
 
         def finished(self):
             self.addcontext([])
             return self.stream
 
         transitions = {
             'file': {'context': addcontext,
                      'file': newfile,
                      'hunk': addhunk,
                      'range': addrange},
             'context': {'file': newfile,
                         'hunk': addhunk,
                         'range': addrange},
             'hunk': {'context': addcontext,
                      'file': newfile,
                      'range': addrange},
             'range': {'context': addcontext,
                       'hunk': addhunk},
             }
-             
+
     p = parser()
 
     state = 'context'
     for newstate, data in scanpatch(fp):
         try:
             p.transitions[state][newstate](p, data)
         except KeyError:
             raise patch.PatchError('unhandled transition: %s -> %s' %
                                    (state, newstate))
         state = newstate
     return p.finished()
 
 def filterpatch(ui, chunks):
     chunks = list(chunks)
     chunks.reverse()
     seen = {}
     def consumefile():
         consumed = []
         while chunks:
             if isinstance(chunks[-1], header):
                 break
             else:
                 consumed.append(chunks.pop())
         return consumed
     resp = None
     applied = {}
     while chunks:
         chunk = chunks.pop()
         if isinstance(chunk, header):
             fixoffset = 0
             hdr = ''.join(chunk.header)
             if hdr in seen:
                 consumefile()
                 continue
             seen[hdr] = True
             if not resp:
                 chunk.pretty(ui)
             r = resp or ui.prompt(_('record changes to %s? [y]es [n]o') %
                                   _(' and ').join(map(repr, chunk.files())),
                                   '(?:|[yYnNqQaA])$') or 'y'
             if r in 'aA':
                 r = 'y'
                 resp = 'y'
             if r in 'qQ':
                 raise util.Abort(_('user quit'))
             if r in 'yY':
                 applied[chunk.filename()] = [chunk]
                 if chunk.allhunks():
                     applied[chunk.filename()] += consumefile()
             else:
                 consumefile()
         else:
             if not resp:
                 chunk.pretty(ui)
             r = resp or ui.prompt(_('record this change to %r? [y]es [n]o') %
                                   chunk.filename(), '(?:|[yYnNqQaA])$') or 'y'
             if r in 'aA':
                 r = 'y'
                 resp = 'y'
             if r in 'qQ':
                 raise util.Abort(_('user quit'))
             if r in 'yY':
                 if fixoffset:
                     chunk = copy.copy(chunk)
                     chunk.toline += fixoffset
                 applied[chunk.filename()].append(chunk)
             else:
                 fixoffset += chunk.removed - chunk.added
     return reduce(operator.add, [h for h in applied.itervalues()
                                  if h[0].special() or len(h) > 1], [])
 
 def record(ui, repo, *pats, **opts):
     '''interactively select changes to commit'''
 
     if not ui.interactive:
         raise util.Abort(_('running non-interactively, use commit instead'))
 
     def recordfunc(ui, repo, files, message, match, opts):
         if files:
             changes = None
         else:
             changes = repo.status(files=files, match=match)[:5]
             modified, added, removed = changes[:3]
             files = modified + added + removed
         diffopts = mdiff.diffopts(git=True, nodates=True)
         fp = cStringIO.StringIO()
         patch.diff(repo, repo.dirstate.parents()[0], files=files,
                    match=match, changes=changes, opts=diffopts, fp=fp)
         fp.seek(0)
 
         chunks = filterpatch(ui, parsepatch(fp))
         del fp
 
         contenders = {}
         for h in chunks:
             try: contenders.update(dict.fromkeys(h.files()))
             except AttributeError: pass
-            
+
         newfiles = [f for f in files if f in contenders]
 
         if not newfiles:
             ui.status(_('no changes to record\n'))
             return 0
 
         if changes is None:
             changes = repo.status(files=newfiles, match=match)[:5]
         modified = dict.fromkeys(changes[0])
 
         backups = {}
         backupdir = repo.join('record-backups')
         try:
             os.mkdir(backupdir)
         except OSError, err:
             if err.errno != errno.EEXIST:
                 raise
         try:
             for f in newfiles:
                 if f not in modified:
                     continue
                 fd, tmpname = tempfile.mkstemp(prefix=f.replace('/', '_')+'.',
                                                dir=backupdir)
                 os.close(fd)
                 ui.debug('backup %r as %r\n' % (f, tmpname))
                 util.copyfile(repo.wjoin(f), tmpname)
                 backups[f] = tmpname
 
             fp = cStringIO.StringIO()
             for c in chunks:
                 if c.filename() in backups:
                     c.write(fp)
             dopatch = fp.tell()
             fp.seek(0)
 
             if backups:
                 hg.revert(repo, repo.dirstate.parents()[0], backups.has_key)
 
             if dopatch:
                 ui.debug('applying patch\n')
                 ui.debug(fp.getvalue())
                 patch.internalpatch(fp, ui, 1, repo.root)
             del fp
 
             repo.commit(newfiles, message, opts['user'], opts['date'], match,
                         force_editor=opts.get('force_editor'))
             return 0
         finally:
             try:
                 for realname, tmpname in backups.iteritems():
                     ui.debug('restoring %r to %r\n' % (tmpname, realname))
                     util.copyfile(tmpname, repo.wjoin(realname))
                     os.unlink(tmpname)
                 os.rmdir(backupdir)
             except OSError:
                 pass
     return cmdutil.commit(ui, repo, recordfunc, pats, opts)
 
 cmdtable = {
     "record":
         (record,
          [('A', 'addremove', None,
            _('mark new/missing files as added/removed before committing')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('u', 'user', '', _('record user as commiter')),
          ] + commands.walkopts + commands.commitopts,
          _('hg record [OPTION]... [FILE]...')),
 }

mercurial/patch.py

@@ -1,1330 +1,1330 b''
 # patch.py - patch file parsing routines
 #
 # Copyright 2006 Brendan Cully <[e-mail]>
 # Copyright 2007 Chris Mason <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from i18n import _
 from node import *
 import base85, cmdutil, mdiff, util, context, revlog, diffhelpers
 import cStringIO, email.Parser, os, popen2, re, sha
 import sys, tempfile, zlib
 
 class PatchError(Exception):
     pass
 
 class NoHunks(PatchError):
     pass
 
 # helper functions
 
 def copyfile(src, dst, basedir=None):
     if not basedir:
         basedir = os.getcwd()
 
     abssrc, absdst = [os.path.join(basedir, n) for n in (src, dst)]
     if os.path.exists(absdst):
         raise util.Abort(_("cannot create %s: destination already exists") %
                          dst)
 
     targetdir = os.path.dirname(absdst)
     if not os.path.isdir(targetdir):
         os.makedirs(targetdir)
 
     util.copyfile(abssrc, absdst)
 
 # public functions
 
 def extract(ui, fileobj):
     '''extract patch from data read from fileobj.
 
     patch can be a normal patch or contained in an email message.
 
     return tuple (filename, message, user, date, node, p1, p2).
     Any item in the returned tuple can be None. If filename is None,
     fileobj did not contain a patch. Caller must unlink filename when done.'''
 
     # attempt to detect the start of a patch
     # (this heuristic is borrowed from quilt)
     diffre = re.compile(r'^(?:Index:[ \t]|diff[ \t]|RCS file: |' +
                         'retrieving revision [0-9]+(\.[0-9]+)*$|' +
                         '(---|\*\*\*)[ \t])', re.MULTILINE)
 
     fd, tmpname = tempfile.mkstemp(prefix='hg-patch-')
     tmpfp = os.fdopen(fd, 'w')
     try:
         msg = email.Parser.Parser().parse(fileobj)
 
         subject = msg['Subject']
         user = msg['From']
         # should try to parse msg['Date']
         date = None
         nodeid = None
         branch = None
         parents = []
 
         if subject:
             if subject.startswith('[PATCH'):
                 pend = subject.find(']')
                 if pend >= 0:
                     subject = subject[pend+1:].lstrip()
             subject = subject.replace('\n\t', ' ')
             ui.debug('Subject: %s\n' % subject)
         if user:
             ui.debug('From: %s\n' % user)
         diffs_seen = 0
         ok_types = ('text/plain', 'text/x-diff', 'text/x-patch')
         message = ''
         for part in msg.walk():
             content_type = part.get_content_type()
             ui.debug('Content-Type: %s\n' % content_type)
             if content_type not in ok_types:
                 continue
             payload = part.get_payload(decode=True)
             m = diffre.search(payload)
             if m:
                 hgpatch = False
                 ignoretext = False
 
                 ui.debug(_('found patch at byte %d\n') % m.start(0))
                 diffs_seen += 1
                 cfp = cStringIO.StringIO()
                 for line in payload[:m.start(0)].splitlines():
                     if line.startswith('# HG changeset patch'):
                         ui.debug(_('patch generated by hg export\n'))
                         hgpatch = True
                         # drop earlier commit message content
                         cfp.seek(0)
                         cfp.truncate()
                         subject = None
                     elif hgpatch:
                         if line.startswith('# User '):
                             user = line[7:]
                             ui.debug('From: %s\n' % user)
                         elif line.startswith("# Date "):
                             date = line[7:]
                         elif line.startswith("# Branch "):
                             branch = line[9:]
                         elif line.startswith("# Node ID "):
                             nodeid = line[10:]
                         elif line.startswith("# Parent "):
                             parents.append(line[10:])
                     elif line == '---' and 'git-send-email' in msg['X-Mailer']:
                         ignoretext = True
                     if not line.startswith('# ') and not ignoretext:
                         cfp.write(line)
                         cfp.write('\n')
                 message = cfp.getvalue()
                 if tmpfp:
                     tmpfp.write(payload)
                     if not payload.endswith('\n'):
                         tmpfp.write('\n')
             elif not diffs_seen and message and content_type == 'text/plain':
                 message += '\n' + payload
     except:
         tmpfp.close()
         os.unlink(tmpname)
         raise
 
     if subject and not message.startswith(subject):
         message = '%s\n%s' % (subject, message)
     tmpfp.close()
     if not diffs_seen:
         os.unlink(tmpname)
         return None, message, user, date, branch, None, None, None
     p1 = parents and parents.pop(0) or None
     p2 = parents and parents.pop(0) or None
     return tmpname, message, user, date, branch, nodeid, p1, p2
 
 GP_PATCH  = 1 << 0  # we have to run patch
 GP_FILTER = 1 << 1  # there's some copy/rename operation
 GP_BINARY = 1 << 2  # there's a binary patch
 
 def readgitpatch(fp, firstline=None):
     """extract git-style metadata about patches from <patchname>"""
     class gitpatch:
         "op is one of ADD, DELETE, RENAME, MODIFY or COPY"
         def __init__(self, path):
             self.path = path
             self.oldpath = None
             self.mode = None
             self.op = 'MODIFY'
             self.copymod = False
             self.lineno = 0
             self.binary = False
 
     def reader(fp, firstline):
         if firstline is not None:
             yield firstline
         for line in fp:
             yield line
 
     # Filter patch for git information
     gitre = re.compile('diff --git a/(.*) b/(.*)')
     gp = None
     gitpatches = []
     # Can have a git patch with only metadata, causing patch to complain
     dopatch = 0
 
     lineno = 0
     for line in reader(fp, firstline):
         lineno += 1
         if line.startswith('diff --git'):
             m = gitre.match(line)
             if m:
                 if gp:
                     gitpatches.append(gp)
                 src, dst = m.group(1, 2)
                 gp = gitpatch(dst)
                 gp.lineno = lineno
         elif gp:
             if line.startswith('--- '):
                 if gp.op in ('COPY', 'RENAME'):
                     gp.copymod = True
                     dopatch |= GP_FILTER
                 gitpatches.append(gp)
                 gp = None
                 dopatch |= GP_PATCH
                 continue
             if line.startswith('rename from '):
                 gp.op = 'RENAME'
                 gp.oldpath = line[12:].rstrip()
             elif line.startswith('rename to '):
                 gp.path = line[10:].rstrip()
             elif line.startswith('copy from '):
                 gp.op = 'COPY'
                 gp.oldpath = line[10:].rstrip()
             elif line.startswith('copy to '):
                 gp.path = line[8:].rstrip()
             elif line.startswith('deleted file'):
                 gp.op = 'DELETE'
             elif line.startswith('new file mode '):
                 gp.op = 'ADD'
                 gp.mode = int(line.rstrip()[-6:], 8)
             elif line.startswith('new mode '):
                 gp.mode = int(line.rstrip()[-6:], 8)
             elif line.startswith('GIT binary patch'):
                 dopatch |= GP_BINARY
                 gp.binary = True
     if gp:
         gitpatches.append(gp)
 
     if not gitpatches:
         dopatch = GP_PATCH
 
     return (dopatch, gitpatches)
 
 def patch(patchname, ui, strip=1, cwd=None, files={}):
     """apply <patchname> to the working directory.
     returns whether patch was applied with fuzz factor."""
     patcher = ui.config('ui', 'patch')
     args = []
     try:
         if patcher:
             return externalpatch(patcher, args, patchname, ui, strip, cwd,
                                  files)
         else:
             try:
                 return internalpatch(patchname, ui, strip, cwd, files)
             except NoHunks:
                 patcher = util.find_exe('gpatch') or util.find_exe('patch')
                 ui.debug('no valid hunks found; trying with %r instead\n' %
                          patcher)
                 if util.needbinarypatch():
                     args.append('--binary')
                 return externalpatch(patcher, args, patchname, ui, strip, cwd,
                                      files)
     except PatchError, err:
         s = str(err)
         if s:
             raise util.Abort(s)
         else:
             raise util.Abort(_('patch failed to apply'))
 
 def externalpatch(patcher, args, patchname, ui, strip, cwd, files):
     """use <patcher> to apply <patchname> to the working directory.
     returns whether patch was applied with fuzz factor."""
 
     fuzz = False
     if cwd:
         args.append('-d %s' % util.shellquote(cwd))
     fp = os.popen('%s %s -p%d < %s' % (patcher, ' '.join(args), strip,
                                        util.shellquote(patchname)))
 
     for line in fp:
         line = line.rstrip()
         ui.note(line + '\n')
         if line.startswith('patching file '):
             pf = util.parse_patch_output(line)
             printed_file = False
             files.setdefault(pf, (None, None))
         elif line.find('with fuzz') >= 0:
             fuzz = True
             if not printed_file:
                 ui.warn(pf + '\n')
                 printed_file = True
             ui.warn(line + '\n')
         elif line.find('saving rejects to file') >= 0:
             ui.warn(line + '\n')
         elif line.find('FAILED') >= 0:
             if not printed_file:
                 ui.warn(pf + '\n')
                 printed_file = True
             ui.warn(line + '\n')
     code = fp.close()
     if code:
         raise PatchError(_("patch command failed: %s") %
                          util.explain_exit(code)[0])
     return fuzz
 
 def internalpatch(patchobj, ui, strip, cwd, files={}):
     """use builtin patch to apply <patchobj> to the working directory.
     returns whether patch was applied with fuzz factor."""
     try:
         fp = file(patchobj, 'rb')
     except TypeError:
         fp = patchobj
     if cwd:
         curdir = os.getcwd()
         os.chdir(cwd)
     try:
         ret = applydiff(ui, fp, files, strip=strip)
     finally:
         if cwd:
             os.chdir(curdir)
     if ret < 0:
         raise PatchError
     return ret > 0
 
 # @@ -start,len +start,len @@ or @@ -start +start @@ if len is 1
 unidesc = re.compile('@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@')
 contextdesc = re.compile('(---|\*\*\*) (\d+)(,(\d+))? (---|\*\*\*)')
 
 class patchfile:
     def __init__(self, ui, fname):
         self.fname = fname
         self.ui = ui
         try:
             fp = file(fname, 'rb')
             self.lines = fp.readlines()
             self.exists = True
         except IOError:
             dirname = os.path.dirname(fname)
             if dirname and not os.path.isdir(dirname):
                 dirs = dirname.split(os.path.sep)
                 d = ""
                 for x in dirs:
                     d = os.path.join(d, x)
                     if not os.path.isdir(d):
                         os.mkdir(d)
             self.lines = []
             self.exists = False
-            
+
         self.hash = {}
         self.dirty = 0
         self.offset = 0
         self.rej = []
         self.fileprinted = False
         self.printfile(False)
         self.hunks = 0
 
     def printfile(self, warn):
         if self.fileprinted:
             return
         if warn or self.ui.verbose:
             self.fileprinted = True
         s = _("patching file %s\n") % self.fname
         if warn:
             self.ui.warn(s)
         else:
             self.ui.note(s)
 
 
     def findlines(self, l, linenum):
         # looks through the hash and finds candidate lines.  The
         # result is a list of line numbers sorted based on distance
         # from linenum
         def sorter(a, b):
             vala = abs(a - linenum)
             valb = abs(b - linenum)
             return cmp(vala, valb)
-            
+
         try:
             cand = self.hash[l]
         except:
             return []
 
         if len(cand) > 1:
             # resort our list of potentials forward then back.
             cand.sort(cmp=sorter)
         return cand
 
     def hashlines(self):
         self.hash = {}
         for x in xrange(len(self.lines)):
             s = self.lines[x]
             self.hash.setdefault(s, []).append(x)
 
     def write_rej(self):
         # our rejects are a little different from patch(1).  This always
         # creates rejects in the same form as the original patch.  A file
         # header is inserted so that you can run the reject through patch again
         # without having to type the filename.
 
         if not self.rej:
             return
         if self.hunks != 1:
             hunkstr = "s"
         else:
             hunkstr = ""
 
         fname = self.fname + ".rej"
         self.ui.warn(
             _("%d out of %d hunk%s FAILED -- saving rejects to file %s\n") %
             (len(self.rej), self.hunks, hunkstr, fname))
         try: os.unlink(fname)
         except:
             pass
         fp = file(fname, 'wb')
         base = os.path.basename(self.fname)
         fp.write("--- %s\n+++ %s\n" % (base, base))
         for x in self.rej:
             for l in x.hunk:
                 fp.write(l)
                 if l[-1] != '\n':
                     fp.write("\n\ No newline at end of file\n")
 
     def write(self, dest=None):
         if self.dirty:
             if not dest:
                 dest = self.fname
             st = None
             try:
                 st = os.lstat(dest)
                 if st.st_nlink > 1:
                     os.unlink(dest)
             except: pass
             fp = file(dest, 'wb')
             if st:
                 os.chmod(dest, st.st_mode)
             fp.writelines(self.lines)
             fp.close()
 
     def close(self):
         self.write()
         self.write_rej()
 
     def apply(self, h, reverse):
         if not h.complete():
             raise PatchError(_("bad hunk #%d %s (%d %d %d %d)") %
                             (h.number, h.desc, len(h.a), h.lena, len(h.b),
                             h.lenb))
 
         self.hunks += 1
         if reverse:
             h.reverse()
 
         if self.exists and h.createfile():
             self.ui.warn(_("file %s already exists\n") % self.fname)
             self.rej.append(h)
             return -1
 
         if isinstance(h, binhunk):
             if h.rmfile():
                 os.unlink(self.fname)
             else:
                 self.lines[:] = h.new()
                 self.offset += len(h.new())
                 self.dirty = 1
             return 0
 
         # fast case first, no offsets, no fuzz
         old = h.old()
         # patch starts counting at 1 unless we are adding the file
         if h.starta == 0:
             start = 0
         else:
             start = h.starta + self.offset - 1
         orig_start = start
         if diffhelpers.testhunk(old, self.lines, start) == 0:
             if h.rmfile():
                 os.unlink(self.fname)
             else:
                 self.lines[start : start + h.lena] = h.new()
                 self.offset += h.lenb - h.lena
                 self.dirty = 1
             return 0
 
         # ok, we couldn't match the hunk.  Lets look for offsets and fuzz it
         self.hashlines()
         if h.hunk[-1][0] != ' ':
             # if the hunk tried to put something at the bottom of the file
             # override the start line and use eof here
             search_start = len(self.lines)
         else:
             search_start = orig_start
 
         for fuzzlen in xrange(3):
             for toponly in [ True, False ]:
                 old = h.old(fuzzlen, toponly)
 
                 cand = self.findlines(old[0][1:], search_start)
                 for l in cand:
                     if diffhelpers.testhunk(old, self.lines, l) == 0:
                         newlines = h.new(fuzzlen, toponly)
                         self.lines[l : l + len(old)] = newlines
                         self.offset += len(newlines) - len(old)
                         self.dirty = 1
                         if fuzzlen:
                             fuzzstr = "with fuzz %d " % fuzzlen
                             f = self.ui.warn
                             self.printfile(True)
                         else:
                             fuzzstr = ""
                             f = self.ui.note
                         offset = l - orig_start - fuzzlen
                         if offset == 1:
                             linestr = "line"
                         else:
                             linestr = "lines"
                         f(_("Hunk #%d succeeded at %d %s(offset %d %s).\n") %
                           (h.number, l+1, fuzzstr, offset, linestr))
                         return fuzzlen
         self.printfile(True)
         self.ui.warn(_("Hunk #%d FAILED at %d\n") % (h.number, orig_start))
         self.rej.append(h)
         return -1
 
 class hunk:
     def __init__(self, desc, num, lr, context):
         self.number = num
         self.desc = desc
         self.hunk = [ desc ]
         self.a = []
         self.b = []
         if context:
             self.read_context_hunk(lr)
         else:
             self.read_unified_hunk(lr)
 
     def read_unified_hunk(self, lr):
         m = unidesc.match(self.desc)
         if not m:
             raise PatchError(_("bad hunk #%d") % self.number)
         self.starta, foo, self.lena, self.startb, foo2, self.lenb = m.groups()
         if self.lena == None:
             self.lena = 1
         else:
             self.lena = int(self.lena)
         if self.lenb == None:
             self.lenb = 1
         else:
             self.lenb = int(self.lenb)
         self.starta = int(self.starta)
         self.startb = int(self.startb)
         diffhelpers.addlines(lr.fp, self.hunk, self.lena, self.lenb, self.a, self.b)
         # if we hit eof before finishing out the hunk, the last line will
         # be zero length.  Lets try to fix it up.
         while len(self.hunk[-1]) == 0:
                 del self.hunk[-1]
                 del self.a[-1]
                 del self.b[-1]
                 self.lena -= 1
                 self.lenb -= 1
 
     def read_context_hunk(self, lr):
         self.desc = lr.readline()
         m = contextdesc.match(self.desc)
         if not m:
             raise PatchError(_("bad hunk #%d") % self.number)
         foo, self.starta, foo2, aend, foo3 = m.groups()
         self.starta = int(self.starta)
         if aend == None:
             aend = self.starta
         self.lena = int(aend) - self.starta
         if self.starta:
             self.lena += 1
         for x in xrange(self.lena):
             l = lr.readline()
             if l.startswith('---'):
                 lr.push(l)
                 break
             s = l[2:]
             if l.startswith('- ') or l.startswith('! '):
                 u = '-' + s
             elif l.startswith('  '):
                 u = ' ' + s
             else:
                 raise PatchError(_("bad hunk #%d old text line %d") %
                                  (self.number, x))
             self.a.append(u)
             self.hunk.append(u)
 
         l = lr.readline()
         if l.startswith('\ '):
             s = self.a[-1][:-1]
             self.a[-1] = s
             self.hunk[-1] = s
             l = lr.readline()
         m = contextdesc.match(l)
         if not m:
             raise PatchError(_("bad hunk #%d") % self.number)
         foo, self.startb, foo2, bend, foo3 = m.groups()
         self.startb = int(self.startb)
         if bend == None:
             bend = self.startb
         self.lenb = int(bend) - self.startb
         if self.startb:
             self.lenb += 1
         hunki = 1
         for x in xrange(self.lenb):
             l = lr.readline()
             if l.startswith('\ '):
                 s = self.b[-1][:-1]
                 self.b[-1] = s
                 self.hunk[hunki-1] = s
                 continue
             if not l:
                 lr.push(l)
                 break
             s = l[2:]
             if l.startswith('+ ') or l.startswith('! '):
                 u = '+' + s
             elif l.startswith('  '):
                 u = ' ' + s
             elif len(self.b) == 0:
                 # this can happen when the hunk does not add any lines
                 lr.push(l)
                 break
             else:
                 raise PatchError(_("bad hunk #%d old text line %d") %
                                  (self.number, x))
             self.b.append(s)
             while True:
                 if hunki >= len(self.hunk):
                     h = ""
                 else:
                     h = self.hunk[hunki]
                 hunki += 1
                 if h == u:
                     break
                 elif h.startswith('-'):
                     continue
                 else:
                     self.hunk.insert(hunki-1, u)
                     break
 
         if not self.a:
             # this happens when lines were only added to the hunk
             for x in self.hunk:
                 if x.startswith('-') or x.startswith(' '):
                     self.a.append(x)
         if not self.b:
             # this happens when lines were only deleted from the hunk
             for x in self.hunk:
                 if x.startswith('+') or x.startswith(' '):
                     self.b.append(x[1:])
         # @@ -start,len +start,len @@
         self.desc = "@@ -%d,%d +%d,%d @@\n" % (self.starta, self.lena,
                                              self.startb, self.lenb)
         self.hunk[0] = self.desc
 
     def reverse(self):
         origlena = self.lena
         origstarta = self.starta
         self.lena = self.lenb
         self.starta = self.startb
         self.lenb = origlena
         self.startb = origstarta
         self.a = []
         self.b = []
         # self.hunk[0] is the @@ description
         for x in xrange(1, len(self.hunk)):
             o = self.hunk[x]
             if o.startswith('-'):
                 n = '+' + o[1:]
                 self.b.append(o[1:])
             elif o.startswith('+'):
                 n = '-' + o[1:]
                 self.a.append(n)
             else:
                 n = o
                 self.b.append(o[1:])
                 self.a.append(o)
             self.hunk[x] = o
 
     def fix_newline(self):
         diffhelpers.fix_newline(self.hunk, self.a, self.b)
 
     def complete(self):
         return len(self.a) == self.lena and len(self.b) == self.lenb
 
     def createfile(self):
         return self.starta == 0 and self.lena == 0
 
     def rmfile(self):
         return self.startb == 0 and self.lenb == 0
 
     def fuzzit(self, l, fuzz, toponly):
         # this removes context lines from the top and bottom of list 'l'.  It
         # checks the hunk to make sure only context lines are removed, and then
         # returns a new shortened list of lines.
         fuzz = min(fuzz, len(l)-1)
         if fuzz:
             top = 0
             bot = 0
             hlen = len(self.hunk)
             for x in xrange(hlen-1):
                 # the hunk starts with the @@ line, so use x+1
                 if self.hunk[x+1][0] == ' ':
                     top += 1
                 else:
                     break
             if not toponly:
                 for x in xrange(hlen-1):
                     if self.hunk[hlen-bot-1][0] == ' ':
                         bot += 1
                     else:
                         break
 
             # top and bot now count context in the hunk
             # adjust them if either one is short
             context = max(top, bot, 3)
             if bot < context:
                 bot = max(0, fuzz - (context - bot))
             else:
                 bot = min(fuzz, bot)
             if top < context:
                 top = max(0, fuzz - (context - top))
             else:
                 top = min(fuzz, top)
 
             return l[top:len(l)-bot]
         return l
 
     def old(self, fuzz=0, toponly=False):
         return self.fuzzit(self.a, fuzz, toponly)
-        
+
     def newctrl(self):
         res = []
         for x in self.hunk:
             c = x[0]
             if c == ' ' or c == '+':
                 res.append(x)
         return res
 
     def new(self, fuzz=0, toponly=False):
         return self.fuzzit(self.b, fuzz, toponly)
 
 class binhunk:
     'A binary patch file. Only understands literals so far.'
     def __init__(self, gitpatch):
         self.gitpatch = gitpatch
         self.text = None
         self.hunk = ['GIT binary patch\n']
 
     def createfile(self):
         return self.gitpatch.op in ('ADD', 'RENAME', 'COPY')
 
     def rmfile(self):
         return self.gitpatch.op == 'DELETE'
 
     def complete(self):
         return self.text is not None
 
     def new(self):
         return [self.text]
 
     def extract(self, fp):
         line = fp.readline()
         self.hunk.append(line)
         while line and not line.startswith('literal '):
             line = fp.readline()
             self.hunk.append(line)
         if not line:
             raise PatchError(_('could not extract binary patch'))
         size = int(line[8:].rstrip())
         dec = []
         line = fp.readline()
         self.hunk.append(line)
         while len(line) > 1:
             l = line[0]
             if l <= 'Z' and l >= 'A':
                 l = ord(l) - ord('A') + 1
             else:
                 l = ord(l) - ord('a') + 27
             dec.append(base85.b85decode(line[1:-1])[:l])
             line = fp.readline()
             self.hunk.append(line)
         text = zlib.decompress(''.join(dec))
         if len(text) != size:
             raise PatchError(_('binary patch is %d bytes, not %d') %
                              len(text), size)
         self.text = text
 
 def parsefilename(str):
     # --- filename \t|space stuff
     s = str[4:]
     i = s.find('\t')
     if i < 0:
         i = s.find(' ')
         if i < 0:
             return s
     return s[:i]
 
 def selectfile(afile_orig, bfile_orig, hunk, strip, reverse):
     def pathstrip(path, count=1):
         pathlen = len(path)
         i = 0
         if count == 0:
             return path.rstrip()
         while count > 0:
             i = path.find('/', i)
             if i == -1:
                 raise PatchError(_("unable to strip away %d dirs from %s") %
                                  (count, path))
             i += 1
             # consume '//' in the path
             while i < pathlen - 1 and path[i] == '/':
                 i += 1
             count -= 1
         return path[i:].rstrip()
 
     nulla = afile_orig == "/dev/null"
     nullb = bfile_orig == "/dev/null"
     afile = pathstrip(afile_orig, strip)
     gooda = os.path.exists(afile) and not nulla
     bfile = pathstrip(bfile_orig, strip)
     if afile == bfile:
         goodb = gooda
     else:
         goodb = os.path.exists(bfile) and not nullb
     createfunc = hunk.createfile
     if reverse:
         createfunc = hunk.rmfile
     if not goodb and not gooda and not createfunc():
         raise PatchError(_("unable to find %s or %s for patching") %
                          (afile, bfile))
     if gooda and goodb:
         fname = bfile
         if afile in bfile:
             fname = afile
     elif gooda:
         fname = afile
     elif not nullb:
         fname = bfile
         if afile in bfile:
             fname = afile
     elif not nulla:
         fname = afile
     return fname
 
 class linereader:
     # simple class to allow pushing lines back into the input stream
     def __init__(self, fp):
         self.fp = fp
         self.buf = []
 
     def push(self, line):
         self.buf.append(line)
 
     def readline(self):
         if self.buf:
             l = self.buf[0]
             del self.buf[0]
             return l
         return self.fp.readline()
 
 def applydiff(ui, fp, changed, strip=1, sourcefile=None, reverse=False,
               rejmerge=None, updatedir=None):
     """reads a patch from fp and tries to apply it.  The dict 'changed' is
        filled in with all of the filenames changed by the patch.  Returns 0
        for a clean patch, -1 if any rejects were found and 1 if there was
-       any fuzz.""" 
+       any fuzz."""
 
     def scangitpatch(fp, firstline, cwd=None):
         '''git patches can modify a file, then copy that file to
         a new file, but expect the source to be the unmodified form.
         So we scan the patch looking for that case so we can do
         the copies ahead of time.'''
 
         pos = 0
         try:
             pos = fp.tell()
         except IOError:
             fp = cStringIO.StringIO(fp.read())
 
         (dopatch, gitpatches) = readgitpatch(fp, firstline)
         for gp in gitpatches:
             if gp.copymod:
                 copyfile(gp.oldpath, gp.path, basedir=cwd)
 
         fp.seek(pos)
 
         return fp, dopatch, gitpatches
 
     current_hunk = None
     current_file = None
     afile = ""
     bfile = ""
     state = None
     hunknum = 0
     rejects = 0
 
     git = False
     gitre = re.compile('diff --git (a/.*) (b/.*)')
 
     # our states
     BFILE = 1
     err = 0
     context = None
     lr = linereader(fp)
     dopatch = True
     gitworkdone = False
 
     while True:
         newfile = False
         x = lr.readline()
         if not x:
             break
         if current_hunk:
             if x.startswith('\ '):
                 current_hunk.fix_newline()
             ret = current_file.apply(current_hunk, reverse)
             if ret >= 0:
                 changed.setdefault(current_file.fname, (None, None))
                 if ret > 0:
                     err = 1
             current_hunk = None
             gitworkdone = False
         if ((sourcefile or state == BFILE) and ((not context and x[0] == '@') or
             ((context or context == None) and x.startswith('***************')))):
             try:
                 if context == None and x.startswith('***************'):
                     context = True
                 current_hunk = hunk(x, hunknum + 1, lr, context)
             except PatchError, err:
                 ui.debug(err)
                 current_hunk = None
                 continue
             hunknum += 1
             if not current_file:
                 if sourcefile:
                     current_file = patchfile(ui, sourcefile)
                 else:
                     current_file = selectfile(afile, bfile, current_hunk,
                                               strip, reverse)
                     current_file = patchfile(ui, current_file)
         elif state == BFILE and x.startswith('GIT binary patch'):
             current_hunk = binhunk(changed[bfile[2:]][1])
             if not current_file:
                 if sourcefile:
                     current_file = patchfile(ui, sourcefile)
                 else:
                     current_file = selectfile(afile, bfile, current_hunk,
                                               strip, reverse)
                     current_file = patchfile(ui, current_file)
             hunknum += 1
             current_hunk.extract(fp)
         elif x.startswith('diff --git'):
             # check for git diff, scanning the whole patch file if needed
             m = gitre.match(x)
             if m:
                 afile, bfile = m.group(1, 2)
                 if not git:
                     git = True
                     fp, dopatch, gitpatches = scangitpatch(fp, x)
                     for gp in gitpatches:
                         changed[gp.path] = (gp.op, gp)
                 # else error?
                 # copy/rename + modify should modify target, not source
                 if changed.get(bfile[2:], (None, None))[0] in ('COPY',
                                                                'RENAME'):
                     afile = bfile
                     gitworkdone = True
             newfile = True
         elif x.startswith('---'):
             # check for a unified diff
             l2 = lr.readline()
             if not l2.startswith('+++'):
                 lr.push(l2)
                 continue
             newfile = True
             context = False
             afile = parsefilename(x)
             bfile = parsefilename(l2)
         elif x.startswith('***'):
             # check for a context diff
             l2 = lr.readline()
             if not l2.startswith('---'):
                 lr.push(l2)
                 continue
             l3 = lr.readline()
             lr.push(l3)
             if not l3.startswith("***************"):
                 lr.push(l2)
                 continue
             newfile = True
             context = True
             afile = parsefilename(x)
             bfile = parsefilename(l2)
 
         if newfile:
             if current_file:
                 current_file.close()
                 if rejmerge:
                     rejmerge(current_file)
                 rejects += len(current_file.rej)
             state = BFILE
             current_file = None
             hunknum = 0
     if current_hunk:
         if current_hunk.complete():
             ret = current_file.apply(current_hunk, reverse)
             if ret >= 0:
                 changed.setdefault(current_file.fname, (None, None))
                 if ret > 0:
                     err = 1
         else:
             fname = current_file and current_file.fname or None
             raise PatchError(_("malformed patch %s %s") % (fname,
                              current_hunk.desc))
     if current_file:
         current_file.close()
         if rejmerge:
             rejmerge(current_file)
         rejects += len(current_file.rej)
     if updatedir and git:
         updatedir(gitpatches)
     if rejects:
         return -1
     if hunknum == 0 and dopatch and not gitworkdone:
         raise NoHunks
     return err
 
 def diffopts(ui, opts={}, untrusted=False):
     def get(key, name=None):
         return (opts.get(key) or
                 ui.configbool('diff', name or key, None, untrusted=untrusted))
     return mdiff.diffopts(
         text=opts.get('text'),
         git=get('git'),
         nodates=get('nodates'),
         showfunc=get('show_function', 'showfunc'),
         ignorews=get('ignore_all_space', 'ignorews'),
         ignorewsamount=get('ignore_space_change', 'ignorewsamount'),
         ignoreblanklines=get('ignore_blank_lines', 'ignoreblanklines'))
 
 def updatedir(ui, repo, patches):
     '''Update dirstate after patch application according to metadata'''
     if not patches:
         return
     copies = []
     removes = {}
     cfiles = patches.keys()
     cwd = repo.getcwd()
     if cwd:
         cfiles = [util.pathto(repo.root, cwd, f) for f in patches.keys()]
     for f in patches:
         ctype, gp = patches[f]
         if ctype == 'RENAME':
             copies.append((gp.oldpath, gp.path, gp.copymod))
             removes[gp.oldpath] = 1
         elif ctype == 'COPY':
             copies.append((gp.oldpath, gp.path, gp.copymod))
         elif ctype == 'DELETE':
             removes[gp.path] = 1
     for src, dst, after in copies:
         if not after:
             copyfile(src, dst, repo.root)
         repo.copy(src, dst)
     removes = removes.keys()
     if removes:
         removes.sort()
         repo.remove(removes, True)
     for f in patches:
         ctype, gp = patches[f]
         if gp and gp.mode:
             x = gp.mode & 0100 != 0
             l = gp.mode & 020000 != 0
             dst = os.path.join(repo.root, gp.path)
             # patch won't create empty files
             if ctype == 'ADD' and not os.path.exists(dst):
                 repo.wwrite(gp.path, '', x and 'x' or '')
             else:
                 util.set_link(dst, l)
                 if not l:
                     util.set_exec(dst, x)
     cmdutil.addremove(repo, cfiles)
     files = patches.keys()
     files.extend([r for r in removes if r not in files])
     files.sort()
 
     return files
 
 def b85diff(to, tn):
     '''print base85-encoded binary diff'''
     def gitindex(text):
         if not text:
             return '0' * 40
         l = len(text)
         s = sha.new('blob %d\0' % l)
         s.update(text)
         return s.hexdigest()
 
     def fmtline(line):
         l = len(line)
         if l <= 26:
             l = chr(ord('A') + l - 1)
         else:
             l = chr(l - 26 + ord('a') - 1)
         return '%c%s\n' % (l, base85.b85encode(line, True))
 
     def chunk(text, csize=52):
         l = len(text)
         i = 0
         while i < l:
             yield text[i:i+csize]
             i += csize
 
     tohash = gitindex(to)
     tnhash = gitindex(tn)
     if tohash == tnhash:
         return ""
 
     # TODO: deltas
     ret = ['index %s..%s\nGIT binary patch\nliteral %s\n' %
            (tohash, tnhash, len(tn))]
     for l in chunk(zlib.compress(tn)):
         ret.append(fmtline(l))
     ret.append('\n')
     return ''.join(ret)
 
 def diff(repo, node1=None, node2=None, files=None, match=util.always,
          fp=None, changes=None, opts=None):
     '''print diff of changes to files between two nodes, or node and
     working directory.
 
     if node1 is None, use first dirstate parent instead.
     if node2 is None, compare node1 with working directory.'''
 
     if opts is None:
         opts = mdiff.defaultopts
     if fp is None:
         fp = repo.ui
 
     if not node1:
         node1 = repo.dirstate.parents()[0]
 
     ccache = {}
     def getctx(r):
         if r not in ccache:
             ccache[r] = context.changectx(repo, r)
         return ccache[r]
 
     flcache = {}
     def getfilectx(f, ctx):
         flctx = ctx.filectx(f, filelog=flcache.get(f))
         if f not in flcache:
             flcache[f] = flctx._filelog
         return flctx
 
     # reading the data for node1 early allows it to play nicely
     # with repo.status and the revlog cache.
     ctx1 = context.changectx(repo, node1)
     # force manifest reading
     man1 = ctx1.manifest()
     date1 = util.datestr(ctx1.date())
 
     if not changes:
         changes = repo.status(node1, node2, files, match=match)[:5]
     modified, added, removed, deleted, unknown = changes
 
     if not modified and not added and not removed:
         return
 
     if node2:
         ctx2 = context.changectx(repo, node2)
         execf2 = ctx2.manifest().execf
         linkf2 = ctx2.manifest().linkf
     else:
         ctx2 = context.workingctx(repo)
         execf2 = util.execfunc(repo.root, None)
         linkf2 = util.linkfunc(repo.root, None)
         if execf2 is None:
             mc = ctx2.parents()[0].manifest().copy()
             execf2 = mc.execf
             linkf2 = mc.linkf
 
     # returns False if there was no rename between ctx1 and ctx2
     # returns None if the file was created between ctx1 and ctx2
     # returns the (file, node) present in ctx1 that was renamed to f in ctx2
     def renamed(f):
         startrev = ctx1.rev()
         c = ctx2
         crev = c.rev()
         if crev is None:
             crev = repo.changelog.count()
         orig = f
         while crev > startrev:
             if f in c.files():
                 try:
                     src = getfilectx(f, c).renamed()
                 except revlog.LookupError:
                     return None
                 if src:
                     f = src[0]
             crev = c.parents()[0].rev()
             # try to reuse
             c = getctx(crev)
         if f not in man1:
             return None
         if f == orig:
             return False
         return f
 
     if repo.ui.quiet:
         r = None
     else:
         hexfunc = repo.ui.debugflag and hex or short
         r = [hexfunc(node) for node in [node1, node2] if node]
 
     if opts.git:
         copied = {}
         for f in added:
             src = renamed(f)
             if src:
                 copied[f] = src
         srcs = [x[1] for x in copied.items()]
 
     all = modified + added + removed
     all.sort()
     gone = {}
 
     for f in all:
         to = None
         tn = None
         dodiff = True
         header = []
         if f in man1:
             to = getfilectx(f, ctx1).data()
         if f not in removed:
             tn = getfilectx(f, ctx2).data()
         if opts.git:
             def gitmode(x, l):
                 return l and '120000' or (x and '100755' or '100644')
             def addmodehdr(header, omode, nmode):
                 if omode != nmode:
                     header.append('old mode %s\n' % omode)
                     header.append('new mode %s\n' % nmode)
 
             a, b = f, f
             if f in added:
                 mode = gitmode(execf2(f), linkf2(f))
                 if f in copied:
                     a = copied[f]
                     omode = gitmode(man1.execf(a), man1.linkf(a))
                     addmodehdr(header, omode, mode)
                     if a in removed and a not in gone:
                         op = 'rename'
                         gone[a] = 1
                     else:
                         op = 'copy'
                     header.append('%s from %s\n' % (op, a))
                     header.append('%s to %s\n' % (op, f))
                     to = getfilectx(a, ctx1).data()
                 else:
                     header.append('new file mode %s\n' % mode)
                 if util.binary(tn):
                     dodiff = 'binary'
             elif f in removed:
                 if f in srcs:
                     dodiff = False
                 else:
                     mode = gitmode(man1.execf(f), man1.linkf(f))
                     header.append('deleted file mode %s\n' % mode)
             else:
                 omode = gitmode(man1.execf(f), man1.linkf(f))
                 nmode = gitmode(execf2(f), linkf2(f))
                 addmodehdr(header, omode, nmode)
                 if util.binary(to) or util.binary(tn):
                     dodiff = 'binary'
             r = None
             header.insert(0, 'diff --git a/%s b/%s\n' % (a, b))
         if dodiff:
             if dodiff == 'binary':
                 text = b85diff(to, tn)
             else:
                 text = mdiff.unidiff(to, date1,
                                     # ctx2 date may be dynamic
                                     tn, util.datestr(ctx2.date()),
                                     f, r, opts=opts)
             if text or len(header) > 1:
                 fp.write(''.join(header))
             fp.write(text)
 
 def export(repo, revs, template='hg-%h.patch', fp=None, switch_parent=False,
            opts=None):
     '''export changesets as hg patches.'''
 
     total = len(revs)
     revwidth = max([len(str(rev)) for rev in revs])
 
     def single(rev, seqno, fp):
         ctx = repo.changectx(rev)
         node = ctx.node()
         parents = [p.node() for p in ctx.parents() if p]
         branch = ctx.branch()
         if switch_parent:
             parents.reverse()
         prev = (parents and parents[0]) or nullid
 
         if not fp:
             fp = cmdutil.make_file(repo, template, node, total=total,
                                    seqno=seqno, revwidth=revwidth)
         if fp != sys.stdout and hasattr(fp, 'name'):
             repo.ui.note("%s\n" % fp.name)
 
         fp.write("# HG changeset patch\n")
         fp.write("# User %s\n" % ctx.user())
         fp.write("# Date %d %d\n" % ctx.date())
         if branch and (branch != 'default'):
             fp.write("# Branch %s\n" % branch)
         fp.write("# Node ID %s\n" % hex(node))
         fp.write("# Parent  %s\n" % hex(prev))
         if len(parents) > 1:
             fp.write("# Parent  %s\n" % hex(parents[1]))
         fp.write(ctx.description().rstrip())
         fp.write("\n\n")
 
         diff(repo, prev, node, fp=fp, opts=opts)
         if fp not in (sys.stdout, repo.ui):
             fp.close()
 
     for seqno, rev in enumerate(revs):
         single(rev, seqno+1, fp)
 
 def diffstat(patchlines):
     if not util.find_exe('diffstat'):
         return
     fd, name = tempfile.mkstemp(prefix="hg-patchbomb-", suffix=".txt")
     try:
         p = popen2.Popen3('diffstat -p1 -w79 2>/dev/null > ' + name)
         try:
             for line in patchlines: print >> p.tochild, line
             p.tochild.close()
             if p.wait(): return
             fp = os.fdopen(fd, 'r')
             stat = []
             for line in fp: stat.append(line.lstrip())
             last = stat.pop()
             stat.insert(0, last)
             stat = ''.join(stat)
             if stat.startswith('0 files'): raise ValueError
             return stat
         except: raise
     finally:
         try: os.unlink(name)
         except: pass

tests/test-extdiff

@@ -1,40 +1,40 b''
 #!/bin/sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "extdiff=" >> $HGRCPATH
 
 hg init a
 cd a
 echo a > a
 echo b > b
 hg add
 # should diff cloned directories
 hg extdiff -o -r $opt
 
 echo "[extdiff]" >> $HGRCPATH
 echo "cmd.falabala=echo" >> $HGRCPATH
 echo "opts.falabala=diffing" >> $HGRCPATH
 
 hg falabala
 
 hg help falabala
 
 hg ci -d '0 0' -mtest1
 
 echo b >> a
 hg ci -d '1 0' -mtest2
 
-# should diff cloned files directly 
+# should diff cloned files directly
 hg falabala -r 0:1
 
 # test diff during merge
 hg update 0
 echo c >> c
 hg add c
 hg ci -m "new branch" -d '1 0'
 hg update -C 1
 hg merge tip
-# should diff cloned file against wc file 
+# should diff cloned file against wc file
 hg falabala > out || echo "diff-like tools yield a non-zero exit code"
 # cleanup the output since the wc is a tmp directory
 sed  's:\(.* \).*\(\/test-extdiff\):\1[tmp]\2:' out