31bb1d1b2d
The Tcl expression "[append [mc Foo] Bar]" does not return the string "FooBar" after translation; instead it is setting the variable Foo to the value Bar, or if Foo is already defined it is appending Bar onto the end of it. This is *not* what we wanted to have happen here. Tcl's join function is actually the correct function but its default joinStr argument is a single space. Unfortunately all of our call sites do not want an extra space added to their string. So we need a small wrapper function to make the call to join with an empty join string. In C this is (roughly) the job of the strcat function. Since strcat is not yet used at the global level it is a reasonable name to use here. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
362 lines
8.3 KiB
Tcl
362 lines
8.3 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 [mc "No differences detected.
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%s 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." [short_path $path]]
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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 [mc "Loading diff of %s..." [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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set type unknown
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if {[catch {
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set type [file type $path]
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switch -- $type {
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directory {
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set type submodule
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set content {}
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set sz 0
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}
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link {
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set content [file readlink $path]
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set sz [string length $content]
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}
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file {
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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 $path]
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}
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default {
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error "'$type' not supported"
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}
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}
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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 [mc "Unable to display %s" [escape_path $path]]
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error_popup [strcat [mc "Error loading file:"] "\n\n$err"]
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return
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}
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$ui_diff conf -state normal
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if {$type eq {submodule}} {
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$ui_diff insert end [append \
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"* " \
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[mc "Git Repository (subproject)"] \
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"\n"] d_@
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} elseif {![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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[mc "* 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 [mc "Unable to display %s" [escape_path $path]]
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error_popup [strcat [mc "Error loading diff:"] "\n\n$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 {deleted symlink} $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 failed_msg [mc "Failed to unstage selected hunk."]
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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 failed_msg [mc "Failed to stage selected hunk."]
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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 [append $failed_msg "\n\n$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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