compat: Add simplified merge sort implementation from glibc
[gitweb.git] / git-add--interactive.perl
index 1019a72d6c5840a3a30a8435ac7e425080c0f594..17ca5b84f0c077d61b9392bd7900954ce35d6cbf 100755 (executable)
@@ -3,42 +3,29 @@
 use strict;
 use Git;
 
-# Prompt colors:
-my ($prompt_color, $header_color, $help_color, $normal_color);
-# Diff colors:
-my ($new_color, $old_color, $fraginfo_color, $metainfo_color, $whitespace_color);
-
-my ($use_color, $diff_use_color);
 my $repo = Git->repository();
 
-$use_color = $repo->get_colorbool('color.interactive');
-
-if ($use_color) {
-       # Set interactive colors:
+my $menu_use_color = $repo->get_colorbool('color.interactive');
+my ($prompt_color, $header_color, $help_color) =
+       $menu_use_color ? (
+               $repo->get_color('color.interactive.prompt', 'bold blue'),
+               $repo->get_color('color.interactive.header', 'bold'),
+               $repo->get_color('color.interactive.help', 'red bold'),
+       ) : ();
 
-       # Grab the 3 main colors in git color string format, with sane
-       # (visible) defaults:
-       $prompt_color = $repo->get_color("color.interactive.prompt", "bold blue");
-       $header_color = $repo->get_color("color.interactive.header", "bold");
-       $help_color = $repo->get_color("color.interactive.help", "red bold");
-       $normal_color = $repo->get_color("", "reset");
+my $diff_use_color = $repo->get_colorbool('color.diff');
+my ($fraginfo_color) =
+       $diff_use_color ? (
+               $repo->get_color('color.diff.frag', 'cyan'),
+       ) : ();
 
-       # Do we also set diff colors?
-       $diff_use_color = $repo->get_colorbool('color.diff');
-       if ($diff_use_color) {
-               $new_color = $repo->get_color("color.diff.new", "green");
-               $old_color = $repo->get_color("color.diff.old", "red");
-               $fraginfo_color = $repo->get_color("color.diff.frag", "cyan");
-               $metainfo_color = $repo->get_color("color.diff.meta", "bold");
-               $whitespace_color = $repo->get_color("color.diff.whitespace", "normal red");
-       }
-}
+my $normal_color = $repo->get_color("", "reset");
 
 sub colored {
        my $color = shift;
        my $string = join("", @_);
 
-       if ($use_color) {
+       if (defined $color) {
                # Put a color code at the beginning of each line, a reset at the end
                # color after newlines that are not at the end of the string
                $string =~ s/(\n+)(.)/$1$color$2/g;
@@ -304,7 +291,7 @@ sub highlight_prefix {
                return "$prefix$remainder";
        }
 
-       if (!$use_color) {
+       if (!$menu_use_color) {
                return "[$prefix]$remainder";
        }
 
@@ -525,40 +512,21 @@ sub add_untracked_cmd {
 sub parse_diff {
        my ($path) = @_;
        my @diff = run_cmd_pipe(qw(git diff-files -p --), $path);
-       my (@hunk) = { TEXT => [] };
-
-       for (@diff) {
-               if (/^@@ /) {
-                       push @hunk, { TEXT => [] };
-               }
-               push @{$hunk[-1]{TEXT}}, $_;
+       my @colored = ();
+       if ($diff_use_color) {
+               @colored = run_cmd_pipe(qw(git diff-files -p --color --), $path);
        }
-       return @hunk;
-}
+       my (@hunk) = { TEXT => [], DISPLAY => [] };
 
-sub colored_diff_hunk {
-       my ($text) = @_;
-       # return the text, so that it can be passed to print()
-       my @ret;
-       for (@$text) {
-               if (!$diff_use_color) {
-                       push @ret, $_;
-                       next;
-               }
-
-               if (/^\+/) {
-                       push @ret, colored($new_color, $_);
-               } elsif (/^\-/) {
-                       push @ret, colored($old_color, $_);
-               } elsif (/^\@/) {
-                       push @ret, colored($fraginfo_color, $_);
-               } elsif (/^ /) {
-                       push @ret, colored($normal_color, $_);
-               } else {
-                       push @ret, colored($metainfo_color, $_);
+       for (my $i = 0; $i < @diff; $i++) {
+               if ($diff[$i] =~ /^@@ /) {
+                       push @hunk, { TEXT => [], DISPLAY => [] };
                }
+               push @{$hunk[-1]{TEXT}}, $diff[$i];
+               push @{$hunk[-1]{DISPLAY}},
+                       ($diff_use_color ? $colored[$i] : $diff[$i]);
        }
-       return @ret;
+       return @hunk;
 }
 
 sub hunk_splittable {
@@ -578,9 +546,11 @@ sub parse_hunk_header {
 }
 
 sub split_hunk {
-       my ($text) = @_;
+       my ($text, $display) = @_;
        my @split = ();
-
+       if (!defined $display) {
+               $display = $text;
+       }
        # If there are context lines in the middle of a hunk,
        # it can be split, but we would need to take care of
        # overlaps later.
@@ -594,16 +564,19 @@ sub split_hunk {
                my $i = $hunk_start - 1;
                my $this = +{
                        TEXT => [],
+                       DISPLAY => [],
                        OLD => $o_ofs,
                        NEW => $n_ofs,
                        OCNT => 0,
                        NCNT => 0,
                        ADDDEL => 0,
                        POSTCTX => 0,
+                       USE => undef,
                };
 
                while (++$i < @$text) {
                        my $line = $text->[$i];
+                       my $display = $display->[$i];
                        if ($line =~ /^ /) {
                                if ($this->{ADDDEL} &&
                                    !defined $next_hunk_start) {
@@ -615,6 +588,7 @@ sub split_hunk {
                                        $next_hunk_start = $i;
                                }
                                push @{$this->{TEXT}}, $line;
+                               push @{$this->{DISPLAY}}, $display;
                                $this->{OCNT}++;
                                $this->{NCNT}++;
                                if (defined $next_hunk_start) {
@@ -637,6 +611,7 @@ sub split_hunk {
                                redo OUTER;
                        }
                        push @{$this->{TEXT}}, $line;
+                       push @{$this->{DISPLAY}}, $display;
                        $this->{ADDDEL}++;
                        if ($line =~ /^-/) {
                                $this->{OCNT}++;
@@ -661,9 +636,14 @@ sub split_hunk {
                            " +$n_ofs" .
                            (($n_cnt != 1) ? ",$n_cnt" : '') .
                            " @@\n");
+               my $display_head = $head;
                unshift @{$hunk->{TEXT}}, $head;
+               if ($diff_use_color) {
+                       $display_head = colored($fraginfo_color, $head);
+               }
+               unshift @{$hunk->{DISPLAY}}, $display_head;
        }
-       return map { $_->{TEXT} } @split;
+       return @split;
 }
 
 sub find_last_o_ctx {
@@ -794,7 +774,9 @@ sub patch_update_file {
        my ($ix, $num);
        my $path = shift;
        my ($head, @hunk) = parse_diff($path);
-       print colored_diff_hunk($head->{TEXT});
+       for (@{$head->{DISPLAY}}) {
+               print;
+       }
        $num = scalar @hunk;
        $ix = 0;
 
@@ -836,7 +818,9 @@ sub patch_update_file {
                if (hunk_splittable($hunk[$ix]{TEXT})) {
                        $other .= '/s';
                }
-               print colored_diff_hunk($hunk[$ix]{TEXT});
+               for (@{$hunk[$ix]{DISPLAY}}) {
+                       print;
+               }
                print colored $prompt_color, "Stage this hunk [y/n/a/d$other/?]? ";
                my $line = <STDIN>;
                if ($line) {
@@ -889,14 +873,12 @@ sub patch_update_file {
                                next;
                        }
                        elsif ($other =~ /s/ && $line =~ /^s/) {
-                               my @split = split_hunk($hunk[$ix]{TEXT});
+                               my @split = split_hunk($hunk[$ix]{TEXT}, $hunk[$ix]{DISPLAY});
                                if (1 < @split) {
                                        print colored $header_color, "Split into ",
                                        scalar(@split), " hunks.\n";
                                }
-                               splice(@hunk, $ix, 1,
-                                      map { +{ TEXT => $_, USE => undef } }
-                                      @split);
+                               splice (@hunk, $ix, 1, @split);
                                $num = scalar @hunk;
                                next;
                        }