+proc show_line_source {} {
+ global cmitmode currentid parents curview blamestuff blameinst
+ global diff_menu_line diff_menu_filebase flist_menu_file
+ global nullid nullid2 gitdir
+
+ set from_index {}
+ if {$cmitmode eq "tree"} {
+ set id $currentid
+ set line [expr {$diff_menu_line - $diff_menu_filebase}]
+ } else {
+ set h [find_hunk_blamespec $diff_menu_filebase $diff_menu_line]
+ if {$h eq {}} return
+ set pi [lindex $h 0]
+ if {$pi == 0} {
+ mark_ctext_line $diff_menu_line
+ return
+ }
+ incr pi -1
+ if {$currentid eq $nullid} {
+ if {$pi > 0} {
+ # must be a merge in progress...
+ if {[catch {
+ # get the last line from .git/MERGE_HEAD
+ set f [open [file join $gitdir MERGE_HEAD] r]
+ set id [lindex [split [read $f] "\n"] end-1]
+ close $f
+ } err]} {
+ error_popup [mc "Couldn't read merge head: %s" $err]
+ return
+ }
+ } elseif {$parents($curview,$currentid) eq $nullid2} {
+ # need to do the blame from the index
+ if {[catch {
+ set from_index [index_sha1 $flist_menu_file]
+ } err]} {
+ error_popup [mc "Error reading index: %s" $err]
+ return
+ }
+ }
+ } else {
+ set id [lindex $parents($curview,$currentid) $pi]
+ }
+ set line [lindex $h 1]
+ }
+ set blameargs {}
+ if {$from_index ne {}} {
+ lappend blameargs | git cat-file blob $from_index
+ }
+ lappend blameargs | git blame -p -L$line,+1
+ if {$from_index ne {}} {
+ lappend blameargs --contents -
+ } else {
+ lappend blameargs $id
+ }
+ lappend blameargs -- $flist_menu_file
+ if {[catch {
+ set f [open $blameargs r]
+ } err]} {
+ error_popup [mc "Couldn't start git blame: %s" $err]
+ return
+ }
+ fconfigure $f -blocking 0
+ set i [reg_instance $f]
+ set blamestuff($i) {}
+ set blameinst $i
+ filerun $f [list read_line_source $f $i]
+}
+
+proc stopblaming {} {
+ global blameinst
+
+ if {[info exists blameinst]} {
+ stop_instance $blameinst
+ unset blameinst
+ }
+}
+
+proc read_line_source {fd inst} {
+ global blamestuff curview commfd blameinst nullid nullid2
+
+ while {[gets $fd line] >= 0} {
+ lappend blamestuff($inst) $line
+ }
+ if {![eof $fd]} {
+ return 1
+ }
+ unset commfd($inst)
+ unset blameinst
+ fconfigure $fd -blocking 1
+ if {[catch {close $fd} err]} {
+ error_popup [mc "Error running git blame: %s" $err]
+ return 0
+ }
+
+ set fname {}
+ set line [split [lindex $blamestuff($inst) 0] " "]
+ set id [lindex $line 0]
+ set lnum [lindex $line 1]
+ if {[string length $id] == 40 && [string is xdigit $id] &&
+ [string is digit -strict $lnum]} {
+ # look for "filename" line
+ foreach l $blamestuff($inst) {
+ if {[string match "filename *" $l]} {
+ set fname [string range $l 9 end]
+ break
+ }
+ }
+ }
+ if {$fname ne {}} {
+ # all looks good, select it
+ if {$id eq $nullid} {
+ # blame uses all-zeroes to mean not committed,
+ # which would mean a change in the index
+ set id $nullid2
+ }
+ if {[commitinview $id $curview]} {
+ selectline [rowofcommit $id] 1 [list $fname $lnum]
+ } else {
+ error_popup [mc "That line comes from commit %s, \
+ which is not in this view" [shortids $id]]
+ }
+ } else {
+ puts "oops couldn't parse git blame output"
+ }
+ return 0
+}
+
projects / git.git / blobdiff