Add subroutine to display one-line summary of hunks

This commit implements a rather simple-minded mechanism to display a
one-line summary of the hunks in an array ref.  The display consists of
the line numbers and the first changed line, truncated to 80 characters.
20 lines are displayed at a time, and the index of the first undisplayed
line is returned, allowing the caller to display more if desired.  (The 20
and 80 should be made configurable.)

Signed-off-by: William Pursell <bill.pursell@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
William Pursell 2008-12-04 10:00:24 +00:00 committed by Junio C Hamano
parent ae26e7c749
commit 3f6aff6889

View file

@ -836,6 +836,47 @@ sub patch_update_cmd {
}
}
# Generate a one line summary of a hunk.
sub summarize_hunk {
my $rhunk = shift;
my $summary = $rhunk->{TEXT}[0];
# Keep the line numbers, discard extra context.
$summary =~ s/@@(.*?)@@.*/$1 /s;
$summary .= " " x (20 - length $summary);
# Add some user context.
for my $line (@{$rhunk->{TEXT}}) {
if ($line =~ m/^[+-].*\w/) {
$summary .= $line;
last;
}
}
chomp $summary;
return substr($summary, 0, 80) . "\n";
}
# Print a one-line summary of each hunk in the array ref in
# the first argument, starting wih the index in the 2nd.
sub display_hunks {
my ($hunks, $i) = @_;
my $ctr = 0;
$i ||= 0;
for (; $i < @$hunks && $ctr < 20; $i++, $ctr++) {
my $status = " ";
if (defined $hunks->[$i]{USE}) {
$status = $hunks->[$i]{USE} ? "+" : "-";
}
printf "%s%2d: %s",
$status,
$i + 1,
summarize_hunk($hunks->[$i]);
}
return $i;
}
sub patch_update_file {
my ($ix, $num);
my $path = shift;