зеркало из https://github.com/microsoft/git.git
Merge branch 'mk/gitweb-diff-hl'
"gitweb" learns to highlight the patch it outputs even more. By Michał Kiedrowicz (7) and Jakub Narębski (1) * mk/gitweb-diff-hl: gitweb: Refinement highlightning in combined diffs gitweb: Highlight interesting parts of diff gitweb: Push formatting diff lines to print_diff_chunk() gitweb: Use print_diff_chunk() for both side-by-side and inline diffs gitweb: Extract print_sidebyside_diff_lines() gitweb: Pass esc_html_hl_regions() options to esc_html() gitweb: esc_html_hl_regions(): Don't create empty <span> elements gitweb: Use descriptive names in esc_html_hl_regions()
This commit is contained in:
Junio C Hamano
Коммит
c6cfa5bbbb
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@ -1732,20 +1732,29 @@ sub chop_and_escape_str {
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# '<span class="mark">foo</span>bar'
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sub esc_html_hl_regions {
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my ($str, $css_class, @sel) = @_;
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return esc_html($str) unless @sel;
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my %opts = grep { ref($_) ne 'ARRAY' } @sel;
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@sel = grep { ref($_) eq 'ARRAY' } @sel;
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return esc_html($str, %opts) unless @sel;
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my $out = '';
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my $pos = 0;
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for my $s (@sel) {
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$out .= esc_html(substr($str, $pos, $s->[0] - $pos))
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if ($s->[0] - $pos > 0);
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$out .= $cgi->span({-class => $css_class},
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esc_html(substr($str, $s->[0], $s->[1] - $s->[0])));
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my ($begin, $end) = @$s;
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$pos = $s->[1];
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# Don't create empty <span> elements.
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next if $end <= $begin;
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my $escaped = esc_html(substr($str, $begin, $end - $begin),
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%opts);
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$out .= esc_html(substr($str, $pos, $begin - $pos), %opts)
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if ($begin - $pos > 0);
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$out .= $cgi->span({-class => $css_class}, $escaped);
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$pos = $end;
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}
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$out .= esc_html(substr($str, $pos))
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$out .= esc_html(substr($str, $pos), %opts)
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if ($pos < length($str));
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return $out;
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@ -2421,26 +2430,32 @@ sub format_cc_diff_chunk_header {
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}
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# process patch (diff) line (not to be used for diff headers),
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# returning class and HTML-formatted (but not wrapped) line
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sub process_diff_line {
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my $line = shift;
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my ($from, $to) = @_;
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# returning HTML-formatted (but not wrapped) line.
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# If the line is passed as a reference, it is treated as HTML and not
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# esc_html()'ed.
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sub format_diff_line {
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my ($line, $diff_class, $from, $to) = @_;
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my $diff_class = diff_line_class($line, $from, $to);
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chomp $line;
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$line = untabify($line);
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if ($from && $to && $line =~ m/^\@{2} /) {
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$line = format_unidiff_chunk_header($line, $from, $to);
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return $diff_class, $line;
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} elsif ($from && $to && $line =~ m/^\@{3}/) {
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$line = format_cc_diff_chunk_header($line, $from, $to);
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return $diff_class, $line;
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if (ref($line)) {
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$line = $$line;
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} else {
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chomp $line;
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$line = untabify($line);
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if ($from && $to && $line =~ m/^\@{2} /) {
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$line = format_unidiff_chunk_header($line, $from, $to);
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} elsif ($from && $to && $line =~ m/^\@{3}/) {
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$line = format_cc_diff_chunk_header($line, $from, $to);
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} else {
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$line = esc_html($line, -nbsp=>1);
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}
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}
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return $diff_class, esc_html($line, -nbsp=>1);
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my $diff_classes = "diff";
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$diff_classes .= " $diff_class" if ($diff_class);
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$line = "<div class=\"$diff_classes\">$line</div>\n";
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return $line;
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}
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# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
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@ -4994,10 +5009,186 @@ sub git_difftree_body {
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print "</table>\n";
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}
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sub print_sidebyside_diff_chunk {
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my @chunk = @_;
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# Print context lines and then rem/add lines in a side-by-side manner.
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sub print_sidebyside_diff_lines {
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my ($ctx, $rem, $add) = @_;
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# print context block before add/rem block
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if (@$ctx) {
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print join '',
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'<div class="chunk_block ctx">',
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'<div class="old">',
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@$ctx,
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'</div>',
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'<div class="new">',
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@$ctx,
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'</div>',
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'</div>';
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}
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if (!@$add) {
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# pure removal
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print join '',
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'<div class="chunk_block rem">',
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'<div class="old">',
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@$rem,
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'</div>',
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'</div>';
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} elsif (!@$rem) {
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# pure addition
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print join '',
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'<div class="chunk_block add">',
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'<div class="new">',
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@$add,
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'</div>',
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'</div>';
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} else {
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print join '',
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'<div class="chunk_block chg">',
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'<div class="old">',
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@$rem,
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'</div>',
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'<div class="new">',
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@$add,
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'</div>',
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'</div>';
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}
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}
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# Print context lines and then rem/add lines in inline manner.
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sub print_inline_diff_lines {
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my ($ctx, $rem, $add) = @_;
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print @$ctx, @$rem, @$add;
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}
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# Format removed and added line, mark changed part and HTML-format them.
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# Implementation is based on contrib/diff-highlight
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sub format_rem_add_lines_pair {
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my ($rem, $add, $num_parents) = @_;
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# We need to untabify lines before split()'ing them;
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# otherwise offsets would be invalid.
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chomp $rem;
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chomp $add;
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$rem = untabify($rem);
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$add = untabify($add);
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my @rem = split(//, $rem);
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my @add = split(//, $add);
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my ($esc_rem, $esc_add);
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# Ignore leading +/- characters for each parent.
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my ($prefix_len, $suffix_len) = ($num_parents, 0);
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my ($prefix_has_nonspace, $suffix_has_nonspace);
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my $shorter = (@rem < @add) ? @rem : @add;
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while ($prefix_len < $shorter) {
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last if ($rem[$prefix_len] ne $add[$prefix_len]);
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$prefix_has_nonspace = 1 if ($rem[$prefix_len] !~ /\s/);
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$prefix_len++;
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}
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while ($prefix_len + $suffix_len < $shorter) {
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last if ($rem[-1 - $suffix_len] ne $add[-1 - $suffix_len]);
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$suffix_has_nonspace = 1 if ($rem[-1 - $suffix_len] !~ /\s/);
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$suffix_len++;
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}
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# Mark lines that are different from each other, but have some common
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# part that isn't whitespace. If lines are completely different, don't
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# mark them because that would make output unreadable, especially if
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# diff consists of multiple lines.
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if ($prefix_has_nonspace || $suffix_has_nonspace) {
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$esc_rem = esc_html_hl_regions($rem, 'marked',
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[$prefix_len, @rem - $suffix_len], -nbsp=>1);
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$esc_add = esc_html_hl_regions($add, 'marked',
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[$prefix_len, @add - $suffix_len], -nbsp=>1);
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} else {
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$esc_rem = esc_html($rem, -nbsp=>1);
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$esc_add = esc_html($add, -nbsp=>1);
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}
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return format_diff_line(\$esc_rem, 'rem'),
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format_diff_line(\$esc_add, 'add');
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}
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# HTML-format diff context, removed and added lines.
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sub format_ctx_rem_add_lines {
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my ($ctx, $rem, $add, $num_parents) = @_;
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my (@new_ctx, @new_rem, @new_add);
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my $can_highlight = 0;
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my $is_combined = ($num_parents > 1);
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# Highlight if every removed line has a corresponding added line.
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if (@$add > 0 && @$add == @$rem) {
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$can_highlight = 1;
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# Highlight lines in combined diff only if the chunk contains
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# diff between the same version, e.g.
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#
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# - a
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# - b
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# + c
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# + d
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#
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# Otherwise the highlightling would be confusing.
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if ($is_combined) {
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for (my $i = 0; $i < @$add; $i++) {
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my $prefix_rem = substr($rem->[$i], 0, $num_parents);
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my $prefix_add = substr($add->[$i], 0, $num_parents);
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$prefix_rem =~ s/-/+/g;
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if ($prefix_rem ne $prefix_add) {
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$can_highlight = 0;
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last;
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}
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}
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}
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}
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if ($can_highlight) {
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for (my $i = 0; $i < @$add; $i++) {
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my ($line_rem, $line_add) = format_rem_add_lines_pair(
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$rem->[$i], $add->[$i], $num_parents);
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push @new_rem, $line_rem;
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push @new_add, $line_add;
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}
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} else {
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@new_rem = map { format_diff_line($_, 'rem') } @$rem;
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@new_add = map { format_diff_line($_, 'add') } @$add;
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}
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@new_ctx = map { format_diff_line($_, 'ctx') } @$ctx;
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return (\@new_ctx, \@new_rem, \@new_add);
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}
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# Print context lines and then rem/add lines.
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sub print_diff_lines {
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my ($ctx, $rem, $add, $diff_style, $num_parents) = @_;
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my $is_combined = $num_parents > 1;
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($ctx, $rem, $add) = format_ctx_rem_add_lines($ctx, $rem, $add,
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$num_parents);
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if ($diff_style eq 'sidebyside' && !$is_combined) {
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print_sidebyside_diff_lines($ctx, $rem, $add);
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} else {
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# default 'inline' style and unknown styles
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print_inline_diff_lines($ctx, $rem, $add);
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}
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}
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sub print_diff_chunk {
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my ($diff_style, $num_parents, $from, $to, @chunk) = @_;
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my (@ctx, @rem, @add);
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# The class of the previous line.
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my $prev_class = '';
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return unless @chunk;
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# incomplete last line might be among removed or added lines,
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@ -5016,55 +5207,19 @@ sub print_sidebyside_diff_chunk {
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# print chunk headers
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if ($class && $class eq 'chunk_header') {
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print $line;
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print format_diff_line($line, $class, $from, $to);
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next;
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}
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## print from accumulator when type of class of lines change
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# empty contents block on start rem/add block, or end of chunk
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if (@ctx && (!$class || $class eq 'rem' || $class eq 'add')) {
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print join '',
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'<div class="chunk_block ctx">',
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'<div class="old">',
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@ctx,
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'</div>',
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'<div class="new">',
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@ctx,
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'</div>',
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'</div>';
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@ctx = ();
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}
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# empty add/rem block on start context block, or end of chunk
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if ((@rem || @add) && (!$class || $class eq 'ctx')) {
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if (!@add) {
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# pure removal
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print join '',
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'<div class="chunk_block rem">',
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'<div class="old">',
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@rem,
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'</div>',
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'</div>';
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} elsif (!@rem) {
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# pure addition
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print join '',
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'<div class="chunk_block add">',
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'<div class="new">',
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@add,
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'</div>',
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'</div>';
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} else {
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# assume that it is change
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print join '',
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'<div class="chunk_block chg">',
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'<div class="old">',
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@rem,
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'</div>',
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'<div class="new">',
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@add,
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'</div>',
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'</div>';
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}
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@rem = @add = ();
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## print from accumulator when have some add/rem lines or end
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# of chunk (flush context lines), or when have add and rem
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# lines and new block is reached (otherwise add/rem lines could
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# be reordered)
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if (!$class || ((@rem || @add) && $class eq 'ctx') ||
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(@rem && @add && $class ne $prev_class)) {
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print_diff_lines(\@ctx, \@rem, \@add,
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$diff_style, $num_parents);
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@ctx = @rem = @add = ();
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}
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## adding lines to accumulator
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@ -5080,6 +5235,8 @@ sub print_sidebyside_diff_chunk {
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if ($class eq 'ctx') {
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push @ctx, $line;
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}
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$prev_class = $class;
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}
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}
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@ -5201,27 +5358,19 @@ sub git_patchset_body {
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next PATCH if ($patch_line =~ m/^diff /);
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my ($class, $line) = process_diff_line($patch_line, \%from, \%to);
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my $diff_classes = "diff";
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$diff_classes .= " $class" if ($class);
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$line = "<div class=\"$diff_classes\">$line</div>\n";
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my $class = diff_line_class($patch_line, \%from, \%to);
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|
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if ($diff_style eq 'sidebyside' && !$is_combined) {
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if ($class eq 'chunk_header') {
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print_sidebyside_diff_chunk(@chunk);
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@chunk = ( [ $class, $line ] );
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} else {
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push @chunk, [ $class, $line ];
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}
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} else {
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# default 'inline' style and unknown styles
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print $line;
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if ($class eq 'chunk_header') {
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print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
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@chunk = ();
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}
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|
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push @chunk, [ $class, $patch_line ];
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}
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|
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} continue {
|
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if (@chunk) {
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print_sidebyside_diff_chunk(@chunk);
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print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
|
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@chunk = ();
|
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}
|
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print "</div>\n"; # class="patch"
|
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|
|
|
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|
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@ -438,6 +438,10 @@ div.diff.add {
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color: #008800;
|
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}
|
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|
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div.diff.add span.marked {
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background-color: #aaffaa;
|
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}
|
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|
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div.diff.from_file a.path,
|
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div.diff.from_file {
|
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color: #aa0000;
|
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|
|
@ -447,6 +451,10 @@ div.diff.rem {
|
|||
color: #cc0000;
|
||||
}
|
||||
|
||||
div.diff.rem span.marked {
|
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background-color: #ffaaaa;
|
||||
}
|
||||
|
||||
div.diff.chunk_header a,
|
||||
div.diff.chunk_header {
|
||||
color: #990099;
|
||||
|
|
|
|||
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