diff options
Diffstat (limited to 'git-gui/lib/diff.tcl')
| -rw-r--r-- | git-gui/lib/diff.tcl | 357 |
1 files changed, 318 insertions, 39 deletions
diff --git a/git-gui/lib/diff.tcl b/git-gui/lib/diff.tcl index d04f6dbde2..bbbf15c875 100644 --- a/git-gui/lib/diff.tcl +++ b/git-gui/lib/diff.tcl @@ -16,19 +16,36 @@ proc clear_diff {} { $ui_workdir tag remove in_diff 0.0 end } -proc reshow_diff {} { +proc reshow_diff {{after {}}} { global file_states file_lists global current_diff_path current_diff_side + global ui_diff set p $current_diff_path if {$p eq {}} { # No diff is being shown. - } elseif {$current_diff_side eq {} - || [catch {set s $file_states($p)}] - || [lsearch -sorted -exact $file_lists($current_diff_side) $p] == -1} { + } elseif {$current_diff_side eq {}} { clear_diff + } elseif {[catch {set s $file_states($p)}] + || [lsearch -sorted -exact $file_lists($current_diff_side) $p] == -1} { + + if {[find_next_diff $current_diff_side $p {} {[^O]}]} { + next_diff $after + } else { + clear_diff + } } else { - show_diff $p $current_diff_side + set save_pos [lindex [$ui_diff yview] 0] + show_diff $p $current_diff_side {} $save_pos $after + } +} + +proc force_diff_encoding {enc} { + global current_diff_path + + if {$current_diff_path ne {}} { + force_path_encoding $current_diff_path $enc + reshow_diff } } @@ -52,11 +69,12 @@ A rescan will be automatically started to find other files which may have the sa rescan ui_ready 0 } -proc show_diff {path w {lno {}}} { +proc show_diff {path w {lno {}} {scroll_pos {}} {callback {}}} { global file_states file_lists - global is_3way_diff diff_active repo_config + global is_3way_diff is_conflict_diff diff_active repo_config global ui_diff ui_index ui_workdir global current_diff_path current_diff_side current_diff_header + global current_diff_queue if {$diff_active || ![lock_index read]} return @@ -69,21 +87,84 @@ proc show_diff {path w {lno {}}} { } if {$lno >= 1} { $w tag add in_diff $lno.0 [expr {$lno + 1}].0 + $w see $lno.0 } set s $file_states($path) set m [lindex $s 0] - set is_3way_diff 0 - set diff_active 1 + set is_conflict_diff 0 set current_diff_path $path set current_diff_side $w - set current_diff_header {} + set current_diff_queue {} ui_status [mc "Loading diff of %s..." [escape_path $path]] + set cont_info [list $scroll_pos $callback] + + if {[string first {U} $m] >= 0} { + merge_load_stages $path [list show_unmerged_diff $cont_info] + } elseif {$m eq {_O}} { + show_other_diff $path $w $m $cont_info + } else { + start_show_diff $cont_info + } +} + +proc show_unmerged_diff {cont_info} { + global current_diff_path current_diff_side + global merge_stages ui_diff is_conflict_diff + global current_diff_queue + + if {$merge_stages(2) eq {}} { + set is_conflict_diff 1 + lappend current_diff_queue \ + [list [mc "LOCAL: deleted\nREMOTE:\n"] d======= \ + [list ":1:$current_diff_path" ":3:$current_diff_path"]] + } elseif {$merge_stages(3) eq {}} { + set is_conflict_diff 1 + lappend current_diff_queue \ + [list [mc "REMOTE: deleted\nLOCAL:\n"] d======= \ + [list ":1:$current_diff_path" ":2:$current_diff_path"]] + } elseif {[lindex $merge_stages(1) 0] eq {120000} + || [lindex $merge_stages(2) 0] eq {120000} + || [lindex $merge_stages(3) 0] eq {120000}} { + set is_conflict_diff 1 + lappend current_diff_queue \ + [list [mc "LOCAL:\n"] d======= \ + [list ":1:$current_diff_path" ":2:$current_diff_path"]] + lappend current_diff_queue \ + [list [mc "REMOTE:\n"] d======= \ + [list ":1:$current_diff_path" ":3:$current_diff_path"]] + } else { + start_show_diff $cont_info + return + } + + advance_diff_queue $cont_info +} + +proc advance_diff_queue {cont_info} { + global current_diff_queue ui_diff + + set item [lindex $current_diff_queue 0] + set current_diff_queue [lrange $current_diff_queue 1 end] + + $ui_diff conf -state normal + $ui_diff insert end [lindex $item 0] [lindex $item 1] + $ui_diff conf -state disabled + + start_show_diff $cont_info [lindex $item 2] +} + +proc show_other_diff {path w m cont_info} { + global file_states file_lists + global is_3way_diff diff_active repo_config + global ui_diff ui_index ui_workdir + global current_diff_path current_diff_side current_diff_header + # - Git won't give us the diff, there's nothing to compare to! # if {$m eq {_O}} { - set max_sz [expr {128 * 1024}] + set max_sz 100000 set type unknown if {[catch { set type [file type $path] @@ -99,7 +180,9 @@ proc show_diff {path w {lno {}}} { } file { set fd [open $path r] - fconfigure $fd -eofchar {} + fconfigure $fd \ + -eofchar {} \ + -encoding [get_path_encoding $path] set content [read $fd $max_sz] close $fd set sz [file size $path] @@ -135,32 +218,57 @@ proc show_diff {path w {lno {}}} { d_@ } else { if {$sz > $max_sz} { - $ui_diff insert end \ -"* Untracked file is $sz bytes. -* Showing only first $max_sz bytes. -" d_@ + $ui_diff insert end [mc \ +"* Untracked file is %d bytes. +* Showing only first %d bytes. +" $sz $max_sz] d_@ } $ui_diff insert end $content if {$sz > $max_sz} { - $ui_diff insert end " -* Untracked file clipped here by [appname]. + $ui_diff insert end [mc " +* Untracked file clipped here by %s. * To see the entire file, use an external editor. -" d_@ +" [appname]] d_@ } } $ui_diff conf -state disabled set diff_active 0 unlock_index + set scroll_pos [lindex $cont_info 0] + if {$scroll_pos ne {}} { + update + $ui_diff yview moveto $scroll_pos + } ui_ready + set callback [lindex $cont_info 1] + if {$callback ne {}} { + eval $callback + } return } +} + +proc start_show_diff {cont_info {add_opts {}}} { + global file_states file_lists + global is_3way_diff diff_active repo_config + global ui_diff ui_index ui_workdir + global current_diff_path current_diff_side current_diff_header + + set path $current_diff_path + set w $current_diff_side + + set s $file_states($path) + set m [lindex $s 0] + set is_3way_diff 0 + set diff_active 1 + set current_diff_header {} set cmd [list] if {$w eq $ui_index} { lappend cmd diff-index lappend cmd --cached } elseif {$w eq $ui_workdir} { - if {[string index $m 0] eq {U}} { + if {[string first {U} $m] >= 0} { lappend cmd diff } else { lappend cmd diff-files @@ -169,14 +277,18 @@ proc show_diff {path w {lno {}}} { lappend cmd -p lappend cmd --no-color - if {$repo_config(gui.diffcontext) >= 0} { + if {$repo_config(gui.diffcontext) >= 1} { lappend cmd "-U$repo_config(gui.diffcontext)" } if {$w eq $ui_index} { lappend cmd [PARENT] } - lappend cmd -- - lappend cmd $path + if {$add_opts ne {}} { + eval lappend cmd $add_opts + } else { + lappend cmd -- + lappend cmd $path + } if {[catch {set fd [eval git_read --nice $cmd]} err]} { set diff_active 0 @@ -186,33 +298,38 @@ proc show_diff {path w {lno {}}} { return } + set ::current_diff_inheader 1 fconfigure $fd \ -blocking 0 \ - -encoding binary \ - -translation binary - fileevent $fd readable [list read_diff $fd] + -encoding [get_path_encoding $path] \ + -translation lf + fileevent $fd readable [list read_diff $fd $cont_info] } -proc read_diff {fd} { +proc read_diff {fd cont_info} { global ui_diff diff_active - global is_3way_diff current_diff_header + global is_3way_diff is_conflict_diff current_diff_header + global current_diff_queue $ui_diff conf -state normal while {[gets $fd line] >= 0} { # -- Cleanup uninteresting diff header lines. # - if { [string match {diff --git *} $line] - || [string match {diff --cc *} $line] - || [string match {diff --combined *} $line] - || [string match {--- *} $line] - || [string match {+++ *} $line]} { - append current_diff_header $line "\n" - continue + if {$::current_diff_inheader} { + if { [string match {diff --git *} $line] + || [string match {diff --cc *} $line] + || [string match {diff --combined *} $line] + || [string match {--- *} $line] + || [string match {+++ *} $line]} { + append current_diff_header $line "\n" + continue + } } if {[string match {index *} $line]} continue if {$line eq {deleted file mode 120000}} { set line "deleted symlink" } + set ::current_diff_inheader 0 # -- Automatically detect if this is a 3 way diff. # @@ -239,6 +356,7 @@ proc read_diff {fd} { {--} {set tags d_--} {++} { if {[regexp {^\+\+([<>]{7} |={7})} $line _g op]} { + set is_conflict_diff 1 set line [string replace $line 0 1 { }] set tags d$op } else { @@ -258,7 +376,7 @@ proc read_diff {fd} { {-} {set tags d_-} {+} { if {[regexp {^\+([<>]{7} |={7})} $line _g op]} { - set line [string replace $line 0 0 { }] + set is_conflict_diff 1 set tags d$op } else { set tags d_+ @@ -280,13 +398,28 @@ proc read_diff {fd} { if {[eof $fd]} { close $fd + + if {$current_diff_queue ne {}} { + advance_diff_queue $cont_info + return + } + set diff_active 0 unlock_index + set scroll_pos [lindex $cont_info 0] + if {$scroll_pos ne {}} { + update + $ui_diff yview moveto $scroll_pos + } ui_ready if {[$ui_diff index end] eq {2.0}} { handle_empty_diff } + set callback [lindex $cont_info 1] + if {$callback ne {}} { + eval $callback + } } } @@ -327,8 +460,9 @@ proc apply_hunk {x y} { } if {[catch { + set enc [get_path_encoding $current_diff_path] set p [eval git_write $apply_cmd] - fconfigure $p -translation binary -encoding binary + fconfigure $p -translation binary -encoding $enc puts -nonewline $p $current_diff_header puts -nonewline $p [$ui_diff get $s_lno $e_lno] close $p} err]} { @@ -356,9 +490,154 @@ proc apply_hunk {x y} { } unlock_index display_file $current_diff_path $mi + # This should trigger shift to the next changed file if {$o eq {_}} { - clear_diff + reshow_diff + } +} + +proc apply_line {x y} { + global current_diff_path current_diff_header current_diff_side + global ui_diff ui_index file_states + + if {$current_diff_path eq {} || $current_diff_header eq {}} return + if {![lock_index apply_hunk]} return + + set apply_cmd {apply --cached --whitespace=nowarn} + set mi [lindex $file_states($current_diff_path) 0] + if {$current_diff_side eq $ui_index} { + set failed_msg [mc "Failed to unstage selected line."] + set to_context {+} + lappend apply_cmd --reverse + if {[string index $mi 0] ne {M}} { + unlock_index + return + } } else { - set current_diff_path $current_diff_path + set failed_msg [mc "Failed to stage selected line."] + set to_context {-} + if {[string index $mi 1] ne {M}} { + unlock_index + return + } } + + set the_l [$ui_diff index @$x,$y] + + # operate only on change lines + set c1 [$ui_diff get "$the_l linestart"] + if {$c1 ne {+} && $c1 ne {-}} { + unlock_index + return + } + set sign $c1 + + set i_l [$ui_diff search -backwards -regexp ^@@ $the_l 0.0] + if {$i_l eq {}} { + unlock_index + return + } + # $i_l is now at the beginning of a line + + # pick start line number from hunk header + set hh [$ui_diff get $i_l "$i_l + 1 lines"] + set hh [lindex [split $hh ,] 0] + set hln [lindex [split $hh -] 1] + + # There is a special situation to take care of. Consider this hunk: + # + # @@ -10,4 +10,4 @@ + # context before + # -old 1 + # -old 2 + # +new 1 + # +new 2 + # context after + # + # We used to keep the context lines in the order they appear in the + # hunk. But then it is not possible to correctly stage only + # "-old 1" and "+new 1" - it would result in this staged text: + # + # context before + # old 2 + # new 1 + # context after + # + # (By symmetry it is not possible to *un*stage "old 2" and "new 2".) + # + # We resolve the problem by introducing an asymmetry, namely, when + # a "+" line is *staged*, it is moved in front of the context lines + # that are generated from the "-" lines that are immediately before + # the "+" block. That is, we construct this patch: + # + # @@ -10,4 +10,5 @@ + # context before + # +new 1 + # old 1 + # old 2 + # context after + # + # But we do *not* treat "-" lines that are *un*staged in a special + # way. + # + # With this asymmetry it is possible to stage the change + # "old 1" -> "new 1" directly, and to stage the change + # "old 2" -> "new 2" by first staging the entire hunk and + # then unstaging the change "old 1" -> "new 1". + + # This is non-empty if and only if we are _staging_ changes; + # then it accumulates the consecutive "-" lines (after converting + # them to context lines) in order to be moved after the "+" change + # line. + set pre_context {} + + set n 0 + set i_l [$ui_diff index "$i_l + 1 lines"] + set patch {} + while {[$ui_diff compare $i_l < "end - 1 chars"] && + [$ui_diff get $i_l "$i_l + 2 chars"] ne {@@}} { + set next_l [$ui_diff index "$i_l + 1 lines"] + set c1 [$ui_diff get $i_l] + if {[$ui_diff compare $i_l <= $the_l] && + [$ui_diff compare $the_l < $next_l]} { + # the line to stage/unstage + set ln [$ui_diff get $i_l $next_l] + if {$c1 eq {-}} { + set n [expr $n+1] + set patch "$patch$pre_context$ln" + } else { + set patch "$patch$ln$pre_context" + } + set pre_context {} + } elseif {$c1 ne {-} && $c1 ne {+}} { + # context line + set ln [$ui_diff get $i_l $next_l] + set patch "$patch$pre_context$ln" + set n [expr $n+1] + set pre_context {} + } elseif {$c1 eq $to_context} { + # turn change line into context line + set ln [$ui_diff get "$i_l + 1 chars" $next_l] + if {$c1 eq {-}} { + set pre_context "$pre_context $ln" + } else { + set patch "$patch $ln" + } + set n [expr $n+1] + } + set i_l $next_l + } + set patch "@@ -$hln,$n +$hln,[eval expr $n $sign 1] @@\n$patch" + + if {[catch { + set enc [get_path_encoding $current_diff_path] + set p [eval git_write $apply_cmd] + fconfigure $p -translation binary -encoding $enc + puts -nonewline $p $current_diff_header + puts -nonewline $p $patch + close $p} err]} { + error_popup [append $failed_msg "\n\n$err"] + } + + unlock_index } |