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# git-gui blame viewer
# Copyright (C) 2006, 2007 Shawn Pearce
class blame {
field commit ; # input commit to blame
field path ; # input filename to view in $commit
field w
field w_line
field w_load
field w_file
field w_cmit
field status
field highlight_line -1 ; # current line selected
field highlight_commit {} ; # sha1 of commit selected
field total_lines 0 ; # total length of file
field blame_lines 0 ; # number of lines computed
field commit_count 0 ; # number of commits in $commit_list
field commit_list {} ; # list of commit sha1 in receipt order
field order ; # array commit -> receipt order
field header ; # array commit,key -> header field
field line_commit ; # array line -> sha1 commit
field line_file ; # array line -> file name
field r_commit ; # commit currently being parsed
field r_orig_line ; # original line number
field r_final_line ; # final line number
field r_line_count ; # lines in this region
constructor new {i_commit i_path} {
set commit $i_commit
set path $i_path
make_toplevel top w
wm title $top "[appname] ([reponame]): File Viewer"
set status "Loading $commit:$path..."
label $w.path -text "$commit:$path" \
-anchor w \
-justify left \
-borderwidth 1 \
-relief sunken \
-font font_uibold
pack $w.path -side top -fill x
frame $w.out
text $w.out.loaded_t \
-background white -borderwidth 0 \
-state disabled \
-wrap none \
-height 40 \
-width 1 \
-font font_diff
$w.out.loaded_t tag conf annotated -background grey
text $w.out.linenumber_t \
-background white -borderwidth 0 \
-state disabled \
-wrap none \
-height 40 \
-width 5 \
-font font_diff
$w.out.linenumber_t tag conf linenumber -justify right
text $w.out.file_t \
-background white -borderwidth 0 \
-state disabled \
-wrap none \
-height 40 \
-width 80 \
-xscrollcommand [list $w.out.sbx set] \
-font font_diff
scrollbar $w.out.sbx -orient h -command [list $w.out.file_t xview]
scrollbar $w.out.sby -orient v \
-command [list scrollbar2many [list \
$w.out.loaded_t \
$w.out.linenumber_t \
$w.out.file_t \
] yview]
grid \
$w.out.linenumber_t \
$w.out.loaded_t \
$w.out.file_t \
$w.out.sby \
-sticky nsew
grid conf $w.out.sbx -column 2 -sticky we
grid columnconfigure $w.out 2 -weight 1
grid rowconfigure $w.out 0 -weight 1
pack $w.out -fill both -expand 1
label $w.status \
-textvariable @status \
-anchor w \
-justify left \
-borderwidth 1 \
-relief sunken
pack $w.status -side bottom -fill x
frame $w.cm
text $w.cm.t \
-background white -borderwidth 0 \
-state disabled \
-wrap none \
-height 10 \
-width 80 \
-xscrollcommand [list $w.cm.sbx set] \
-yscrollcommand [list $w.cm.sby set] \
-font font_diff
scrollbar $w.cm.sbx -orient h -command [list $w.cm.t xview]
scrollbar $w.cm.sby -orient v -command [list $w.cm.t yview]
pack $w.cm.sby -side right -fill y
pack $w.cm.sbx -side bottom -fill x
pack $w.cm.t -expand 1 -fill both
pack $w.cm -side bottom -fill x
menu $w.ctxm -tearoff 0
$w.ctxm add command \
-label "Copy Commit" \
-command [cb _copycommit]
set w_line $w.out.linenumber_t
set w_load $w.out.loaded_t
set w_file $w.out.file_t
set w_cmit $w.cm.t
foreach i [list \
$w.out.loaded_t \
$w.out.linenumber_t \
$w.out.file_t] {
$i tag conf in_sel \
-background [$i cget -foreground] \
-foreground [$i cget -background]
$i conf -yscrollcommand \
[list many2scrollbar [list \
$w.out.loaded_t \
$w.out.linenumber_t \
$w.out.file_t \
] yview $w.out.sby]
bind $i <Button-1> "[cb _click $i @%x,%y]; focus $i"
bind_button3 $i "
set cursorX %x
set cursorY %y
set cursorW %W
tk_popup $w.ctxm %X %Y
"
}
foreach i [list \
$w.out.loaded_t \
$w.out.linenumber_t \
$w.out.file_t \
$w.cm.t] {
bind $i <Key-Up> {catch {%W yview scroll -1 units};break}
bind $i <Key-Down> {catch {%W yview scroll 1 units};break}
bind $i <Key-Left> {catch {%W xview scroll -1 units};break}
bind $i <Key-Right> {catch {%W xview scroll 1 units};break}
bind $i <Key-k> {catch {%W yview scroll -1 units};break}
bind $i <Key-j> {catch {%W yview scroll 1 units};break}
bind $i <Key-h> {catch {%W xview scroll -1 units};break}
bind $i <Key-l> {catch {%W xview scroll 1 units};break}
bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
bind $i <Control-Key-f> {catch {%W yview scroll 1 pages};break}
}
bind $w.cm.t <Button-1> [list focus $w.cm.t]
bind $top <Visibility> [list focus $top]
bind $top <Destroy> [list delete_this $this]
if {$commit eq {}} {
set fd [open $path r]
} else {
set cmd [list git cat-file blob "$commit:$path"]
set fd [open "| $cmd" r]
}
fconfigure $fd -blocking 0 -translation lf -encoding binary
fileevent $fd readable [cb _read_file $fd]
}
method _read_file {fd} {
$w_load conf -state normal
$w_line conf -state normal
$w_file conf -state normal
while {[gets $fd line] >= 0} {
regsub "\r\$" $line {} line
incr total_lines
$w_load insert end "\n"
$w_line insert end "$total_lines\n" linenumber
$w_file insert end "$line\n"
}
$w_load conf -state disabled
$w_line conf -state disabled
$w_file conf -state disabled
if {[eof $fd]} {
close $fd
_status $this
set cmd [list git blame -M -C --incremental]
if {$commit eq {}} {
lappend cmd --contents $path
} else {
lappend cmd $commit
}
lappend cmd -- $path
set fd [open "| $cmd" r]
fconfigure $fd -blocking 0 -translation lf -encoding binary
fileevent $fd readable [cb _read_blame $fd]
}
} ifdeleted { catch {close $fd} }
method _read_blame {fd} {
while {[gets $fd line] >= 0} {
if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
cmit original_line final_line line_count]} {
set r_commit $cmit
set r_orig_line $original_line
set r_final_line $final_line
set r_line_count $line_count
if {[catch {set g $order($cmit)}]} {
$w_line tag conf g$cmit
$w_file tag conf g$cmit
$w_line tag raise in_sel
$w_file tag raise in_sel
$w_file tag raise sel
set order($cmit) $commit_count
incr commit_count
lappend commit_list $cmit
}
} elseif {[string match {filename *} $line]} {
set file [string range $line 9 end]
set n $r_line_count
set lno $r_final_line
set cmit $r_commit
while {$n > 0} {
set lno_e "$lno.0 lineend + 1c"
if {[catch {set g g$line_commit($lno)}]} {
$w_load tag add annotated $lno.0 $lno_e
} else {
$w_line tag remove g$g $lno.0 $lno_e
$w_file tag remove g$g $lno.0 $lno_e
}
set line_commit($lno) $cmit
set line_file($lno) $file
$w_line tag add g$cmit $lno.0 $lno_e
$w_file tag add g$cmit $lno.0 $lno_e
if {$highlight_line == -1} {
if {[lindex [$w_file yview] 0] == 0} {
$w_file see $lno.0
_showcommit $this $lno
}
} elseif {$highlight_line == $lno} {
_showcommit $this $lno
}
incr n -1
incr lno
incr blame_lines
}
set hc $highlight_commit
if {$hc ne {}
&& [expr {$order($hc) + 1}] == $order($cmit)} {
_showcommit $this $highlight_line
}
} elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
set header($r_commit,$key) $data
}
}
if {[eof $fd]} {
close $fd
set status {Annotation complete.}
} else {
_status $this
}
} ifdeleted { catch {close $fd} }
method _status {} {
set have $blame_lines
set total $total_lines
set pdone 0
if {$total} {set pdone [expr {100 * $have / $total}]}
set status [format \
"Loading annotations... %i of %i lines annotated (%2i%%)" \
$have $total $pdone]
}
method _click {cur_w pos} {
set lno [lindex [split [$cur_w index $pos] .] 0]
if {$lno eq {}} return
set lno_e "$lno.0 + 1 line"
$w_line tag remove in_sel 0.0 end
$w_file tag remove in_sel 0.0 end
$w_line tag add in_sel $lno.0 $lno_e
$w_file tag add in_sel $lno.0 $lno_e
_showcommit $this $lno
}
variable blame_colors {
#ff4040
#ff40ff
#4040ff
}
method _showcommit {lno} {
global repo_config
variable blame_colors
if {$highlight_commit ne {}} {
set idx $order($highlight_commit)
set i 0
foreach c $blame_colors {
set h [lindex $commit_list [expr {$idx - 1 + $i}]]
$w_line tag conf g$h -background white
$w_file tag conf g$h -background white
incr i
}
}
$w_cmit conf -state normal
$w_cmit delete 0.0 end
if {[catch {set cmit $line_commit($lno)}]} {
set cmit {}
$w_cmit insert end "Loading annotation..."
} else {
set idx $order($cmit)
set i 0
foreach c $blame_colors {
set h [lindex $commit_list [expr {$idx - 1 + $i}]]
$w_line tag conf g$h -background $c
$w_file tag conf g$h -background $c
incr i
}
set author_name {}
set author_email {}
set author_time {}
catch {set author_name $header($cmit,author)}
catch {set author_email $header($cmit,author-mail)}
catch {set author_time [clock format \
$header($cmit,author-time) \
-format {%Y-%m-%d %H:%M:%S}
]}
set committer_name {}
set committer_email {}
set committer_time {}
catch {set committer_name $header($cmit,committer)}
catch {set committer_email $header($cmit,committer-mail)}
catch {set committer_time [clock format \
$header($cmit,committer-time) \
-format {%Y-%m-%d %H:%M:%S}
]}
if {[catch {set msg $header($cmit,message)}]} {
set msg {}
catch {
set fd [open "| git cat-file commit $cmit" r]
fconfigure $fd -encoding binary -translation lf
if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
set enc utf-8
}
while {[gets $fd line] > 0} {
if {[string match {encoding *} $line]} {
set enc [string tolower [string range $line 9 end]]
}
}
set msg [encoding convertfrom $enc [read $fd]]
set msg [string trim $msg]
close $fd
set author_name [encoding convertfrom $enc $author_name]
set committer_name [encoding convertfrom $enc $committer_name]
set header($cmit,author) $author_name
set header($cmit,committer) $committer_name
}
set header($cmit,message) $msg
}
$w_cmit insert end "commit $cmit
Author: $author_name $author_email $author_time
Committer: $committer_name $committer_email $committer_time
Original File: [escape_path $line_file($lno)]
$msg"
}
$w_cmit conf -state disabled
set highlight_line $lno
set highlight_commit $cmit
}
method _copycommit {} {
set pos @$::cursorX,$::cursorY
set lno [lindex [split [$::cursorW index $pos] .] 0]
if {![catch {set commit $line_commit($lno)}]} {
clipboard clear
clipboard append \
-format STRING \
-type STRING \
-- $commit
}
}
}