diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/diff.tcl | 242 |
1 files changed, 141 insertions, 101 deletions
diff --git a/lib/diff.tcl b/lib/diff.tcl index cd5b74c728..ec8c11eeb7 100644 --- a/lib/diff.tcl +++ b/lib/diff.tcl @@ -542,10 +542,23 @@ proc apply_hunk {x y} { } } -proc apply_line {x y} { +proc apply_range_or_line {x y} { global current_diff_path current_diff_header current_diff_side global ui_diff ui_index file_states + set selected [$ui_diff tag nextrange sel 0.0] + + if {$selected == {}} { + set first [$ui_diff index "@$x,$y"] + set last $first + } else { + set first [lindex $selected 0] + set last [lindex $selected 1] + } + + set first_l [$ui_diff index "$first linestart"] + set last_l [$ui_diff index "$last lineend"] + if {$current_diff_path eq {} || $current_diff_header eq {}} return if {![lock_index apply_hunk]} return @@ -568,120 +581,147 @@ proc apply_line {x y} { } } - set the_l [$ui_diff index @$x,$y] + set wholepatch {} - # 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 - } - # $i_l is now at the beginning of a line + while {$first_l < $last_l} { + set i_l [$ui_diff search -backwards -regexp ^@@ $first_l 0.0] + if {$i_l eq {}} { + # If there's not a @@ above, then the selected range + # must have come before the first_l @@ + set i_l [$ui_diff search -regexp ^@@ $first_l $last_l] + } + if {$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 $hh -] 1] + # pick start line number from hunk header + set hh [$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 $n+1] + # There is a special situation to take care of. Consider this + # hunk: + # + # @@ -10,4 +10,4 @@ + # context before + # -old 1 + # -old 2 + # +new 1 + # +new 2 + # context after + # + # We used to keep the context lines in the order they appear in + # the hunk. But then it is not possible to correctly stage only + # "-old 1" and "+new 1" - it would result in this staged text: + # + # context before + # old 2 + # new 1 + # context after + # + # (By symmetry it is not possible to *un*stage "old 2" and "new + # 2".) + # + # We resolve the problem by introducing an asymmetry, namely, + # when a "+" line is *staged*, it is moved in front of the + # context lines that are generated from the "-" lines that are + # immediately before the "+" block. That is, we construct this + # patch: + # + # @@ -10,4 +10,5 @@ + # context before + # +new 1 + # old 1 + # old 2 + # context after + # + # But we do *not* treat "-" lines that are *un*staged in a + # special way. + # + # With this asymmetry it is possible to stage the change "old + # 1" -> "new 1" directly, and to stage the change "old 2" -> + # "new 2" by first staging the entire hunk and then unstaging + # the change "old 1" -> "new 1". + # + # Applying multiple lines adds complexity to the special + # situation. The pre_context must be moved after the entire + # first block of consecutive staged "+" lines, so that + # staging both additions gives the following patch: + # + # @@ -10,4 +10,6 @@ + # context before + # +new 1 + # +new 2 + # old 1 + # old 2 + # context after + + # This is non-empty if and only if we are _staging_ changes; + # then it accumulates the consecutive "-" lines (after + # converting them to context lines) in order to be moved after + # "+" change lines. + set pre_context {} + + set n 0 + set m 0 + set i_l [$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 $first_l <= $i_l] && + [$ui_diff compare $i_l < $last_l] && + ($c1 eq {-} || $c1 eq {+})} { + # a line to stage/unstage + set ln [$ui_diff get $i_l $next_l] + if {$c1 eq {-}} { + set n [expr $n+1] + set patch "$patch$pre_context$ln" + set pre_context {} + } else { + set m [expr $m+1] + set patch "$patch$ln" + } + } elseif {$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 m [expr $m+1] + set pre_context {} + } elseif {$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 m [expr $m+1] } else { - set patch "$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 $ln" + # a change in the opposite direction of + # to_context which is outside the range of + # lines to apply. + set patch "$patch$pre_context" + set pre_context {} } - set n [expr $n+1] + set i_l $next_l } - set i_l $next_l + set patch "$patch$pre_context" + set wholepatch "$wholepatch@@ -$hln,$n +$hln,$m @@\n$patch" + set first_l [$ui_diff index "$next_l + 1 lines"] } - set patch "$patch$pre_context" - set patch "@@ -$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 + puts -nonewline $p $wholepatch close $p} err]} { error_popup [append $failed_msg "\n\n$err"] } |