+ return $ret
+}
+
+proc unflatten {var l} {
+ global $var
+
+ catch {unset $var}
+ foreach {i v} $l {
+ set $var\($i\) $v
+ }
+}
+
+proc showview {n} {
+ global curview viewdata viewfiles
+ global displayorder parentlist childlist rowidlist rowoffsets
+ global colormap rowtextx commitrow nextcolor canvxmax
+ global numcommits rowrangelist commitlisted idrowranges
+ global selectedline currentid canv canvy0
+ global matchinglines treediffs
+ global pending_select phase
+ global commitidx rowlaidout rowoptim linesegends
+ global commfd nextupdate
+ global selectedview
+ global vparentlist vchildlist vdisporder vcmitlisted
+ global hlview selectedhlview
+
+ if {$n == $curview} return
+ set selid {}
+ if {[info exists selectedline]} {
+ set selid $currentid
+ set y [yc $selectedline]
+ set ymax [lindex [$canv cget -scrollregion] 3]
+ set span [$canv yview]
+ set ytop [expr {[lindex $span 0] * $ymax}]
+ set ybot [expr {[lindex $span 1] * $ymax}]
+ if {$ytop < $y && $y < $ybot} {
+ set yscreen [expr {$y - $ytop}]
+ } else {
+ set yscreen [expr {($ybot - $ytop) / 2}]
+ }
+ }
+ unselectline
+ normalline
+ stopfindproc
+ if {$curview >= 0} {
+ set vparentlist($curview) $parentlist
+ set vchildlist($curview) $childlist
+ set vdisporder($curview) $displayorder
+ set vcmitlisted($curview) $commitlisted
+ if {$phase ne {}} {
+ set viewdata($curview) \
+ [list $phase $rowidlist $rowoffsets $rowrangelist \
+ [flatten idrowranges] [flatten idinlist] \
+ $rowlaidout $rowoptim $numcommits $linesegends]
+ } elseif {![info exists viewdata($curview)]
+ || [lindex $viewdata($curview) 0] ne {}} {
+ set viewdata($curview) \
+ [list {} $rowidlist $rowoffsets $rowrangelist]
+ }
+ }
+ catch {unset matchinglines}
+ catch {unset treediffs}
+ clear_display
+ if {[info exists hlview] && $hlview == $n} {
+ unset hlview
+ set selectedhlview None
+ }
+
+ set curview $n
+ set selectedview $n
+ .bar.view entryconf 2 -state [expr {$n == 0? "disabled": "normal"}]
+ .bar.view entryconf 3 -state [expr {$n == 0? "disabled": "normal"}]
+
+ if {![info exists viewdata($n)]} {
+ set pending_select $selid
+ getcommits
+ return
+ }
+
+ set v $viewdata($n)
+ set phase [lindex $v 0]
+ set displayorder $vdisporder($n)
+ set parentlist $vparentlist($n)
+ set childlist $vchildlist($n)
+ set commitlisted $vcmitlisted($n)
+ set rowidlist [lindex $v 1]
+ set rowoffsets [lindex $v 2]
+ set rowrangelist [lindex $v 3]
+ if {$phase eq {}} {
+ set numcommits [llength $displayorder]
+ catch {unset idrowranges}
+ } else {
+ unflatten idrowranges [lindex $v 4]
+ unflatten idinlist [lindex $v 5]
+ set rowlaidout [lindex $v 6]
+ set rowoptim [lindex $v 7]
+ set numcommits [lindex $v 8]
+ set linesegends [lindex $v 9]
+ }
+
+ catch {unset colormap}
+ catch {unset rowtextx}
+ set nextcolor 0
+ set canvxmax [$canv cget -width]
+ set curview $n
+ set row 0
+ setcanvscroll
+ set yf 0
+ set row 0
+ if {$selid ne {} && [info exists commitrow($n,$selid)]} {
+ set row $commitrow($n,$selid)
+ # try to get the selected row in the same position on the screen
+ set ymax [lindex [$canv cget -scrollregion] 3]
+ set ytop [expr {[yc $row] - $yscreen}]
+ if {$ytop < 0} {
+ set ytop 0
+ }
+ set yf [expr {$ytop * 1.0 / $ymax}]
+ }
+ allcanvs yview moveto $yf
+ drawvisible
+ selectline $row 0
+ if {$phase ne {}} {
+ if {$phase eq "getcommits"} {
+ show_status "Reading commits..."
+ }
+ if {[info exists commfd($n)]} {
+ layoutmore
+ } else {
+ finishcommits
+ }
+ } elseif {$numcommits == 0} {
+ show_status "No commits selected"
+ }
+}
+
+# Stuff relating to the highlighting facility
+
+proc ishighlighted {row} {
+ global vhighlights fhighlights nhighlights rhighlights
+
+ if {[info exists nhighlights($row)] && $nhighlights($row) > 0} {
+ return $nhighlights($row)
+ }
+ if {[info exists vhighlights($row)] && $vhighlights($row) > 0} {
+ return $vhighlights($row)
+ }
+ if {[info exists fhighlights($row)] && $fhighlights($row) > 0} {
+ return $fhighlights($row)
+ }
+ if {[info exists rhighlights($row)] && $rhighlights($row) > 0} {
+ return $rhighlights($row)
+ }
+ return 0
+}
+
+proc bolden {row font} {
+ global canv linehtag selectedline boldrows
+
+ lappend boldrows $row
+ $canv itemconf $linehtag($row) -font $font
+ if {[info exists selectedline] && $row == $selectedline} {
+ $canv delete secsel
+ set t [eval $canv create rect [$canv bbox $linehtag($row)] \
+ -outline {{}} -tags secsel \
+ -fill [$canv cget -selectbackground]]
+ $canv lower $t
+ }
+}
+
+proc bolden_name {row font} {
+ global canv2 linentag selectedline boldnamerows
+
+ lappend boldnamerows $row
+ $canv2 itemconf $linentag($row) -font $font
+ if {[info exists selectedline] && $row == $selectedline} {
+ $canv2 delete secsel
+ set t [eval $canv2 create rect [$canv2 bbox $linentag($row)] \
+ -outline {{}} -tags secsel \
+ -fill [$canv2 cget -selectbackground]]
+ $canv2 lower $t
+ }
+}
+
+proc unbolden {} {
+ global mainfont boldrows
+
+ set stillbold {}
+ foreach row $boldrows {
+ if {![ishighlighted $row]} {
+ bolden $row $mainfont
+ } else {
+ lappend stillbold $row
+ }
+ }
+ set boldrows $stillbold
+}
+
+proc addvhighlight {n} {
+ global hlview curview viewdata vhl_done vhighlights commitidx
+
+ if {[info exists hlview]} {
+ delvhighlight
+ }
+ set hlview $n
+ if {$n != $curview && ![info exists viewdata($n)]} {
+ set viewdata($n) [list getcommits {{}} {{}} {} {} {} 0 0 0 {}]
+ set vparentlist($n) {}
+ set vchildlist($n) {}
+ set vdisporder($n) {}
+ set vcmitlisted($n) {}
+ start_rev_list $n
+ }
+ set vhl_done $commitidx($hlview)
+ if {$vhl_done > 0} {
+ drawvisible
+ }
+}
+
+proc delvhighlight {} {
+ global hlview vhighlights
+
+ if {![info exists hlview]} return
+ unset hlview
+ catch {unset vhighlights}
+ unbolden
+}
+
+proc vhighlightmore {} {
+ global hlview vhl_done commitidx vhighlights
+ global displayorder vdisporder curview mainfont
+
+ set font [concat $mainfont bold]
+ set max $commitidx($hlview)
+ if {$hlview == $curview} {
+ set disp $displayorder
+ } else {
+ set disp $vdisporder($hlview)
+ }
+ set vr [visiblerows]
+ set r0 [lindex $vr 0]
+ set r1 [lindex $vr 1]
+ for {set i $vhl_done} {$i < $max} {incr i} {
+ set id [lindex $disp $i]
+ if {[info exists commitrow($curview,$id)]} {
+ set row $commitrow($curview,$id)
+ if {$r0 <= $row && $row <= $r1} {
+ if {![highlighted $row]} {
+ bolden $row $font
+ }
+ set vhighlights($row) 1
+ }
+ }
+ }
+ set vhl_done $max
+}
+
+proc askvhighlight {row id} {
+ global hlview vhighlights commitrow iddrawn mainfont
+
+ if {[info exists commitrow($hlview,$id)]} {
+ if {[info exists iddrawn($id)] && ![ishighlighted $row]} {
+ bolden $row [concat $mainfont bold]
+ }
+ set vhighlights($row) 1
+ } else {
+ set vhighlights($row) 0
+ }
+}
+
+proc hfiles_change {name ix op} {
+ global highlight_files filehighlight fhighlights fh_serial
+ global mainfont highlight_paths
+
+ if {[info exists filehighlight]} {
+ # delete previous highlights
+ catch {close $filehighlight}
+ unset filehighlight
+ catch {unset fhighlights}
+ unbolden
+ unhighlight_filelist
+ }
+ set highlight_paths {}
+ after cancel do_file_hl $fh_serial
+ incr fh_serial
+ if {$highlight_files ne {}} {
+ after 300 do_file_hl $fh_serial
+ }
+}
+
+proc makepatterns {l} {
+ set ret {}
+ foreach e $l {
+ set ee [string map {"*" "\\*" "?" "\\?" "\[" "\\\[" "\\" "\\\\"} $e]
+ if {[string index $ee end] eq "/"} {
+ lappend ret "$ee*"
+ } else {
+ lappend ret $ee
+ lappend ret "$ee/*"
+ }
+ }
+ return $ret
+}
+
+proc do_file_hl {serial} {
+ global highlight_files filehighlight highlight_paths gdttype fhl_list
+
+ if {$gdttype eq "touching paths:"} {
+ if {[catch {set paths [shellsplit $highlight_files]}]} return
+ set highlight_paths [makepatterns $paths]
+ highlight_filelist
+ set gdtargs [concat -- $paths]
+ } else {
+ set gdtargs [list "-S$highlight_files"]
+ }
+ set cmd [concat | git-diff-tree -r -s --stdin $gdtargs]
+ set filehighlight [open $cmd r+]
+ fconfigure $filehighlight -blocking 0
+ fileevent $filehighlight readable readfhighlight
+ set fhl_list {}
+ drawvisible
+ flushhighlights
+}
+
+proc flushhighlights {} {
+ global filehighlight fhl_list
+
+ if {[info exists filehighlight]} {
+ lappend fhl_list {}
+ puts $filehighlight ""
+ flush $filehighlight
+ }
+}
+
+proc askfilehighlight {row id} {
+ global filehighlight fhighlights fhl_list
+
+ lappend fhl_list $id
+ set fhighlights($row) -1
+ puts $filehighlight $id
+}
+
+proc readfhighlight {} {
+ global filehighlight fhighlights commitrow curview mainfont iddrawn
+ global fhl_list
+
+ while {[gets $filehighlight line] >= 0} {
+ set line [string trim $line]
+ set i [lsearch -exact $fhl_list $line]
+ if {$i < 0} continue
+ for {set j 0} {$j < $i} {incr j} {
+ set id [lindex $fhl_list $j]
+ if {[info exists commitrow($curview,$id)]} {
+ set fhighlights($commitrow($curview,$id)) 0
+ }
+ }
+ set fhl_list [lrange $fhl_list [expr {$i+1}] end]
+ if {$line eq {}} continue
+ if {![info exists commitrow($curview,$line)]} continue
+ set row $commitrow($curview,$line)
+ if {[info exists iddrawn($line)] && ![ishighlighted $row]} {
+ bolden $row [concat $mainfont bold]
+ }
+ set fhighlights($row) 1
+ }
+ if {[eof $filehighlight]} {
+ # strange...
+ puts "oops, git-diff-tree died"
+ catch {close $filehighlight}
+ unset filehighlight
+ }
+ next_hlcont
+}
+
+proc find_change {name ix op} {
+ global nhighlights mainfont boldnamerows
+ global findstring findpattern findtype
+
+ # delete previous highlights, if any
+ foreach row $boldnamerows {
+ bolden_name $row $mainfont
+ }
+ set boldnamerows {}
+ catch {unset nhighlights}
+ unbolden
+ if {$findtype ne "Regexp"} {
+ set e [string map {"*" "\\*" "?" "\\?" "\[" "\\\[" "\\" "\\\\"} \
+ $findstring]
+ set findpattern "*$e*"
+ }
+ drawvisible
+}
+
+proc askfindhighlight {row id} {
+ global nhighlights commitinfo iddrawn mainfont
+ global findstring findtype findloc findpattern
+
+ if {![info exists commitinfo($id)]} {
+ getcommit $id
+ }
+ set info $commitinfo($id)
+ set isbold 0
+ set fldtypes {Headline Author Date Committer CDate Comments}
+ foreach f $info ty $fldtypes {
+ if {$findloc ne "All fields" && $findloc ne $ty} {
+ continue
+ }
+ if {$findtype eq "Regexp"} {
+ set doesmatch [regexp $findstring $f]
+ } elseif {$findtype eq "IgnCase"} {
+ set doesmatch [string match -nocase $findpattern $f]
+ } else {
+ set doesmatch [string match $findpattern $f]
+ }
+ if {$doesmatch} {
+ if {$ty eq "Author"} {
+ set isbold 2
+ } else {
+ set isbold 1
+ }
+ }
+ }
+ if {[info exists iddrawn($id)]} {
+ if {$isbold && ![ishighlighted $row]} {
+ bolden $row [concat $mainfont bold]
+ }
+ if {$isbold >= 2} {
+ bolden_name $row [concat $mainfont bold]
+ }
+ }
+ set nhighlights($row) $isbold
+}
+
+proc vrel_change {name ix op} {
+ global highlight_related
+
+ rhighlight_none
+ if {$highlight_related ne "None"} {
+ after idle drawvisible
+ }
+}
+
+# prepare for testing whether commits are descendents or ancestors of a
+proc rhighlight_sel {a} {
+ global descendent desc_todo ancestor anc_todo
+ global highlight_related rhighlights
+
+ catch {unset descendent}
+ set desc_todo [list $a]
+ catch {unset ancestor}
+ set anc_todo [list $a]
+ if {$highlight_related ne "None"} {
+ rhighlight_none
+ after idle drawvisible
+ }
+}
+
+proc rhighlight_none {} {
+ global rhighlights
+
+ catch {unset rhighlights}
+ unbolden
+}
+
+proc is_descendent {a} {
+ global curview children commitrow descendent desc_todo
+
+ set v $curview
+ set la $commitrow($v,$a)
+ set todo $desc_todo
+ set leftover {}
+ set done 0
+ for {set i 0} {$i < [llength $todo]} {incr i} {
+ set do [lindex $todo $i]
+ if {$commitrow($v,$do) < $la} {
+ lappend leftover $do
+ continue
+ }
+ foreach nk $children($v,$do) {
+ if {![info exists descendent($nk)]} {
+ set descendent($nk) 1
+ lappend todo $nk
+ if {$nk eq $a} {
+ set done 1
+ }
+ }
+ }
+ if {$done} {
+ set desc_todo [concat $leftover [lrange $todo [expr {$i+1}] end]]
+ return
+ }
+ }
+ set descendent($a) 0
+ set desc_todo $leftover
+}
+
+proc is_ancestor {a} {
+ global curview parentlist commitrow ancestor anc_todo
+
+ set v $curview
+ set la $commitrow($v,$a)
+ set todo $anc_todo
+ set leftover {}
+ set done 0
+ for {set i 0} {$i < [llength $todo]} {incr i} {
+ set do [lindex $todo $i]
+ if {![info exists commitrow($v,$do)] || $commitrow($v,$do) > $la} {
+ lappend leftover $do
+ continue
+ }
+ foreach np [lindex $parentlist $commitrow($v,$do)] {
+ if {![info exists ancestor($np)]} {
+ set ancestor($np) 1
+ lappend todo $np
+ if {$np eq $a} {
+ set done 1
+ }
+ }
+ }
+ if {$done} {
+ set anc_todo [concat $leftover [lrange $todo [expr {$i+1}] end]]
+ return
+ }
+ }
+ set ancestor($a) 0
+ set anc_todo $leftover