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Merge branch 'jk/diff-highlight-graph-fix'
"diff-highlight" filter (in contrib/) learned to undertand "git log --graph" output better. * jk/diff-highlight-graph-fix: diff-highlight: detect --graph by indent diff-highlight: use flush() helper consistently diff-highlight: test graphs with --color diff-highlight: test interleaved parallel lines of history diff-highlight: prefer "echo" to "cat" in tests diff-highlight: use test_tick in graph test diff-highlight: correct test graph diagram
This commit is contained in:
Junio C Hamano
commit
d19e556529
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@ -21,37 +21,82 @@ package DiffHighlight;
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my $COLOR = qr/\x1b\[[0-9;]*m/;
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my $BORING = qr/$COLOR|\s/;
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# The patch portion of git log -p --graph should only ever have preceding | and
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# not / or \ as merge history only shows up on the commit line.
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my $GRAPH = qr/$COLOR?\|$COLOR?\s+/;
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my @removed;
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my @added;
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my $in_hunk;
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my $graph_indent = 0;
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our $line_cb = sub { print @_ };
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our $flush_cb = sub { local $| = 1 };
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sub handle_line {
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# Count the visible width of a string, excluding any terminal color sequences.
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sub visible_width {
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local $_ = shift;
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my $ret = 0;
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while (length) {
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if (s/^$COLOR//) {
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# skip colors
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} elsif (s/^.//) {
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$ret++;
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}
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}
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return $ret;
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}
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# Return a substring of $str, omitting $len visible characters from the
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# beginning, where terminal color sequences do not count as visible.
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sub visible_substr {
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my ($str, $len) = @_;
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while ($len > 0) {
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if ($str =~ s/^$COLOR//) {
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next
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}
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$str =~ s/^.//;
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$len--;
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}
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return $str;
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}
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sub handle_line {
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my $orig = shift;
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local $_ = $orig;
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# match a graph line that begins a commit
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if (/^(?:$COLOR?\|$COLOR?[ ])* # zero or more leading "|" with space
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$COLOR?\*$COLOR?[ ] # a "*" with its trailing space
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(?:$COLOR?\|$COLOR?[ ])* # zero or more trailing "|"
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[ ]* # trailing whitespace for merges
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/x) {
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my $graph_prefix = $&;
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# We must flush before setting graph indent, since the
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# new commit may be indented differently from what we
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# queued.
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flush();
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$graph_indent = visible_width($graph_prefix);
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} elsif ($graph_indent) {
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if (length($_) < $graph_indent) {
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$graph_indent = 0;
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} else {
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$_ = visible_substr($_, $graph_indent);
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}
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}
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if (!$in_hunk) {
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$line_cb->($_);
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$in_hunk = /^$GRAPH*$COLOR*\@\@ /;
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$line_cb->($orig);
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$in_hunk = /^$COLOR*\@\@ /;
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}
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elsif (/^$GRAPH*$COLOR*-/) {
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push @removed, $_;
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elsif (/^$COLOR*-/) {
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push @removed, $orig;
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}
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elsif (/^$GRAPH*$COLOR*\+/) {
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push @added, $_;
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elsif (/^$COLOR*\+/) {
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push @added, $orig;
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}
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else {
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show_hunk(\@removed, \@added);
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@removed = ();
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@added = ();
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$line_cb->($_);
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$in_hunk = /^$GRAPH*$COLOR*[\@ ]/;
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flush();
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$line_cb->($orig);
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$in_hunk = /^$COLOR*[\@ ]/;
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}
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# Most of the time there is enough output to keep things streaming,
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@ -71,6 +116,8 @@ sub flush {
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# Flush any queued hunk (this can happen when there is no trailing
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# context in the final diff of the input).
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show_hunk(\@removed, \@added);
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@removed = ();
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@added = ();
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}
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sub highlight_stdin {
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@ -226,8 +273,8 @@ sub is_pair_interesting {
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my $suffix_a = join('', @$a[($sa+1)..$#$a]);
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my $suffix_b = join('', @$b[($sb+1)..$#$b]);
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return $prefix_a !~ /^$GRAPH*$COLOR*-$BORING*$/ ||
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$prefix_b !~ /^$GRAPH*$COLOR*\+$BORING*$/ ||
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return visible_substr($prefix_a, $graph_indent) !~ /^$COLOR*-$BORING*$/ ||
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visible_substr($prefix_b, $graph_indent) !~ /^$COLOR*\+$BORING*$/ ||
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$suffix_a !~ /^$BORING*$/ ||
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$suffix_b !~ /^$BORING*$/;
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}
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@ -52,15 +52,17 @@ test_strip_patch_header () {
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# dh_test_setup_history generates a contrived graph such that we have at least
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# 1 nesting (E) and 2 nestings (F).
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#
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# A branch
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# /
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# D---E---F master
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# A---B master
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# /
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# D---E---F branch
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#
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# git log --all --graph
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# * commit
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# | A
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# | B
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# | * commit
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# | | F
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# * | commit
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# | | A
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# | * commit
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# |/
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# | E
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@ -68,24 +70,30 @@ test_strip_patch_header () {
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# D
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#
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dh_test_setup_history () {
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echo "file1" >file1 &&
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echo "file2" >file2 &&
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echo "file3" >file3 &&
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cat file1 >file &&
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echo file1 >file &&
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git add file &&
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test_tick &&
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git commit -m "D" &&
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git checkout -b branch &&
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cat file2 >file &&
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git commit -a -m "A" &&
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git checkout master &&
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cat file2 >file &&
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echo file2 >file &&
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test_tick &&
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git commit -a -m "E" &&
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cat file3 >file &&
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git commit -a -m "F"
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git checkout master &&
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echo file2 >file &&
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test_tick &&
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git commit -a -m "A" &&
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git checkout branch &&
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echo file3 >file &&
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test_tick &&
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git commit -a -m "F" &&
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git checkout master &&
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echo file3 >file &&
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test_tick &&
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git commit -a -m "B"
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}
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left_trim () {
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@ -246,16 +254,25 @@ test_expect_failure 'diff-highlight treats combining code points as a unit' '
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test_expect_success 'diff-highlight works with the --graph option' '
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dh_test_setup_history &&
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# topo-order so that the order of the commits is the same as with --graph
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# date-order so that the commits are interleaved for both
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# trim graph elements so we can do a diff
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# trim leading space because our trim_graph is not perfect
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git log --branches -p --topo-order |
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git log --branches -p --date-order |
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"$DIFF_HIGHLIGHT" | left_trim >graph.exp &&
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git log --branches -p --graph |
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git log --branches -p --date-order --graph |
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"$DIFF_HIGHLIGHT" | trim_graph | left_trim >graph.act &&
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test_cmp graph.exp graph.act
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'
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# Just reuse the previous graph test, but with --color. Our trimming
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# doesn't know about color, so just sanity check that something got
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# highlighted.
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test_expect_success 'diff-highlight works with color graph' '
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git log --branches -p --date-order --graph --color |
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"$DIFF_HIGHLIGHT" | trim_graph | left_trim >graph &&
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grep "\[7m" graph
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'
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# Most combined diffs won't meet diff-highlight's line-number filter. So we
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# create one here where one side drops a line and the other modifies it. That
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# should result in a diff like:
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@ -293,4 +310,32 @@ test_expect_success 'diff-highlight ignores combined diffs' '
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test_cmp expect actual
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'
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test_expect_success 'diff-highlight handles --graph with leading dash' '
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cat >file <<-\EOF &&
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before
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the old line
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-leading dash
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EOF
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git add file &&
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git commit -m before &&
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sed s/old/new/ <file >file.tmp &&
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mv file.tmp file &&
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git add file &&
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git commit -m after &&
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cat >expect <<-EOF &&
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--- a/file
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+++ b/file
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@@ -1,3 +1,3 @@
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before
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-the ${CW}old${CR} line
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+the ${CW}new${CR} line
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-leading dash
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EOF
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git log --graph -p -1 | "$DIFF_HIGHLIGHT" >actual.raw &&
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trim_graph <actual.raw | sed -n "/^---/,\$p" >actual &&
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test_cmp expect actual
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'
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test_done
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