mirror of
https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
6eb420ef61
On Windows (which includes Cygwin) Tcl defaults to leaving the EOF character of input file streams set to the ASCII EOF character, but if that character were to appear in the data stream then Tcl will close the channel early. So we have to disable eofchar on Windows. Since the default is disabled on all platforms except Windows, we can just disable it everywhere to prevent any sort of read problem. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
338 lines
7.6 KiB
Tcl
338 lines
7.6 KiB
Tcl
# 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 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 $path __
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rescan ui_ready 0
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}
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proc show_diff {path w {lno {}}} {
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global file_states file_lists
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global is_3way_diff diff_active repo_config
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global ui_diff ui_index ui_workdir
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global current_diff_path current_diff_side current_diff_header
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if {$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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ui_status "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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fconfigure $fd -eofchar {}
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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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ui_status "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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$ui_diff conf -state disabled
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set diff_active 0
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unlock_index
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ui_ready
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return
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}
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set cmd [list]
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if {$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 [eval git_read --nice $cmd]} err]} {
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set diff_active 0
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unlock_index
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ui_status "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 $fd]
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}
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proc read_diff {fd} {
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global ui_diff diff_active
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global is_3way_diff current_diff_header
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$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 $fd
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set diff_active 0
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unlock_index
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ui_ready
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if {[$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 {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 [eval git_write $apply_cmd]
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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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