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336 lines
7.7 KiB
336 lines
7.7 KiB
# git-gui diff viewer |
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# Copyright (C) 2006, 2007 Shawn Pearce |
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proc clear_diff {} { |
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global ui_diff current_diff_path current_diff_header |
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global ui_index ui_workdir |
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$ui_diff conf -state normal |
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$ui_diff delete 0.0 end |
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$ui_diff conf -state disabled |
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set current_diff_path {} |
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set current_diff_header {} |
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$ui_index tag remove in_diff 0.0 end |
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$ui_workdir tag remove in_diff 0.0 end |
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} |
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proc reshow_diff {} { |
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global ui_status_value file_states file_lists |
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global current_diff_path current_diff_side |
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set p $current_diff_path |
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if {$p eq {}} { |
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# No diff is being shown. |
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} elseif {$current_diff_side eq {} |
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|| [catch {set s $file_states($p)}] |
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|| [lsearch -sorted -exact $file_lists($current_diff_side) $p] == -1} { |
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clear_diff |
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} else { |
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show_diff $p $current_diff_side |
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} |
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} |
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proc handle_empty_diff {} { |
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global current_diff_path file_states file_lists |
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set path $current_diff_path |
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set s $file_states($path) |
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if {[lindex $s 0] ne {_M}} return |
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info_popup "No differences detected. |
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[short_path $path] has no changes. |
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The modification date of this file was updated by another application, but the content within the file was not changed. |
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A rescan will be automatically started to find other files which may have the same state." |
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clear_diff |
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display_file $path __ |
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rescan {set ui_status_value {Ready.}} 0 |
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} |
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proc show_diff {path w {lno {}}} { |
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global file_states file_lists |
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global is_3way_diff diff_active repo_config |
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global ui_diff ui_status_value ui_index ui_workdir |
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global current_diff_path current_diff_side current_diff_header |
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if {$diff_active || ![lock_index read]} return |
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clear_diff |
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if {$lno == {}} { |
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set lno [lsearch -sorted -exact $file_lists($w) $path] |
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if {$lno >= 0} { |
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incr lno |
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} |
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} |
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if {$lno >= 1} { |
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$w tag add in_diff $lno.0 [expr {$lno + 1}].0 |
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} |
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set s $file_states($path) |
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set m [lindex $s 0] |
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set is_3way_diff 0 |
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set diff_active 1 |
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set current_diff_path $path |
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set current_diff_side $w |
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set current_diff_header {} |
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set ui_status_value "Loading diff of [escape_path $path]..." |
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# - Git won't give us the diff, there's nothing to compare to! |
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# |
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if {$m eq {_O}} { |
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set max_sz [expr {128 * 1024}] |
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if {[catch { |
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set fd [open $path r] |
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set content [read $fd $max_sz] |
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close $fd |
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set sz [file size $path] |
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} err ]} { |
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set diff_active 0 |
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unlock_index |
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set ui_status_value "Unable to display [escape_path $path]" |
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error_popup "Error loading file:\n\n$err" |
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return |
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} |
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$ui_diff conf -state normal |
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if {![catch {set type [exec file $path]}]} { |
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set n [string length $path] |
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if {[string equal -length $n $path $type]} { |
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set type [string range $type $n end] |
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regsub {^:?\s*} $type {} type |
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} |
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$ui_diff insert end "* $type\n" d_@ |
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} |
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if {[string first "\0" $content] != -1} { |
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$ui_diff insert end \ |
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"* Binary file (not showing content)." \ |
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d_@ |
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} else { |
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if {$sz > $max_sz} { |
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$ui_diff insert end \ |
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"* Untracked file is $sz bytes. |
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* Showing only first $max_sz bytes. |
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" d_@ |
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} |
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$ui_diff insert end $content |
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if {$sz > $max_sz} { |
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$ui_diff insert end " |
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* Untracked file clipped here by [appname]. |
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* To see the entire file, use an external editor. |
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" d_@ |
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} |
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} |
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$ui_diff conf -state disabled |
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set diff_active 0 |
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unlock_index |
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set ui_status_value {Ready.} |
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return |
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} |
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set cmd [list | git] |
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if {$w eq $ui_index} { |
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lappend cmd diff-index |
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lappend cmd --cached |
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} elseif {$w eq $ui_workdir} { |
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if {[string index $m 0] eq {U}} { |
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lappend cmd diff |
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} else { |
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lappend cmd diff-files |
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} |
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} |
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lappend cmd -p |
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lappend cmd --no-color |
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if {$repo_config(gui.diffcontext) >= 0} { |
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lappend cmd "-U$repo_config(gui.diffcontext)" |
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} |
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if {$w eq $ui_index} { |
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lappend cmd [PARENT] |
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} |
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lappend cmd -- |
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lappend cmd $path |
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if {[catch {set fd [open $cmd r]} err]} { |
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set diff_active 0 |
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unlock_index |
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set ui_status_value "Unable to display [escape_path $path]" |
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error_popup "Error loading diff:\n\n$err" |
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return |
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} |
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fconfigure $fd \ |
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-blocking 0 \ |
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-encoding binary \ |
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-translation binary |
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fileevent $fd readable [list read_diff $fd] |
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} |
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proc read_diff {fd} { |
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global ui_diff ui_status_value diff_active |
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global is_3way_diff current_diff_header |
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$ui_diff conf -state normal |
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while {[gets $fd line] >= 0} { |
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# -- Cleanup uninteresting diff header lines. |
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# |
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if { [string match {diff --git *} $line] |
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|| [string match {diff --cc *} $line] |
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|| [string match {diff --combined *} $line] |
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|| [string match {--- *} $line] |
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|| [string match {+++ *} $line]} { |
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append current_diff_header $line "\n" |
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continue |
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} |
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if {[string match {index *} $line]} continue |
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if {$line eq {deleted file mode 120000}} { |
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set line "deleted symlink" |
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} |
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# -- Automatically detect if this is a 3 way diff. |
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# |
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if {[string match {@@@ *} $line]} {set is_3way_diff 1} |
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if {[string match {mode *} $line] |
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|| [string match {new file *} $line] |
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|| [string match {deleted file *} $line] |
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|| [string match {Binary files * and * differ} $line] |
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|| $line eq {\ No newline at end of file} |
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|| [regexp {^\* Unmerged path } $line]} { |
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set tags {} |
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} elseif {$is_3way_diff} { |
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set op [string range $line 0 1] |
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switch -- $op { |
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{ } {set tags {}} |
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{@@} {set tags d_@} |
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{ +} {set tags d_s+} |
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{ -} {set tags d_s-} |
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{+ } {set tags d_+s} |
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{- } {set tags d_-s} |
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{--} {set tags d_--} |
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{++} { |
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if {[regexp {^\+\+([<>]{7} |={7})} $line _g op]} { |
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set line [string replace $line 0 1 { }] |
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set tags d$op |
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} else { |
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set tags d_++ |
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} |
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} |
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default { |
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puts "error: Unhandled 3 way diff marker: {$op}" |
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set tags {} |
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} |
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} |
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} else { |
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set op [string index $line 0] |
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switch -- $op { |
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{ } {set tags {}} |
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{@} {set tags d_@} |
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{-} {set tags d_-} |
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{+} { |
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if {[regexp {^\+([<>]{7} |={7})} $line _g op]} { |
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set line [string replace $line 0 0 { }] |
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set tags d$op |
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} else { |
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set tags d_+ |
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} |
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} |
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default { |
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puts "error: Unhandled 2 way diff marker: {$op}" |
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set tags {} |
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} |
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} |
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} |
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$ui_diff insert end $line $tags |
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if {[string index $line end] eq "\r"} { |
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$ui_diff tag add d_cr {end - 2c} |
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} |
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$ui_diff insert end "\n" $tags |
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} |
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$ui_diff conf -state disabled |
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if {[eof $fd]} { |
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close $fd |
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set diff_active 0 |
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unlock_index |
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set ui_status_value {Ready.} |
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if {[$ui_diff index end] eq {2.0}} { |
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handle_empty_diff |
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} |
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} |
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} |
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proc apply_hunk {x y} { |
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global current_diff_path current_diff_header current_diff_side |
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global ui_diff ui_index file_states |
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if {$current_diff_path eq {} || $current_diff_header eq {}} return |
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if {![lock_index apply_hunk]} return |
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set apply_cmd {git apply --cached --whitespace=nowarn} |
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set mi [lindex $file_states($current_diff_path) 0] |
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if {$current_diff_side eq $ui_index} { |
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set mode unstage |
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lappend apply_cmd --reverse |
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if {[string index $mi 0] ne {M}} { |
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unlock_index |
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return |
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} |
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} else { |
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set mode stage |
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if {[string index $mi 1] ne {M}} { |
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unlock_index |
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return |
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} |
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} |
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set s_lno [lindex [split [$ui_diff index @$x,$y] .] 0] |
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set s_lno [$ui_diff search -backwards -regexp ^@@ $s_lno.0 0.0] |
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if {$s_lno eq {}} { |
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unlock_index |
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return |
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} |
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set e_lno [$ui_diff search -forwards -regexp ^@@ "$s_lno + 1 lines" end] |
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if {$e_lno eq {}} { |
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set e_lno end |
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} |
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if {[catch { |
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set p [open "| $apply_cmd" w] |
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fconfigure $p -translation binary -encoding binary |
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puts -nonewline $p $current_diff_header |
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puts -nonewline $p [$ui_diff get $s_lno $e_lno] |
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close $p} err]} { |
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error_popup "Failed to $mode selected hunk.\n\n$err" |
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unlock_index |
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return |
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} |
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$ui_diff conf -state normal |
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$ui_diff delete $s_lno $e_lno |
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$ui_diff conf -state disabled |
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if {[$ui_diff get 1.0 end] eq "\n"} { |
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set o _ |
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} else { |
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set o ? |
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} |
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if {$current_diff_side eq $ui_index} { |
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set mi ${o}M |
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} elseif {[string index $mi 0] eq {_}} { |
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set mi M$o |
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} else { |
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set mi ?$o |
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} |
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unlock_index |
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display_file $current_diff_path $mi |
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if {$o eq {_}} { |
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clear_diff |
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} |
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}
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