gitweb: A bit of code cleanup in git_blame()
Among others, here are the highlights:
* move variable declaration closer to the place it is set and used,
if possible,
* uniquify and simplify coding style a bit, which includes removing
unnecessary '()'.
* check type only if $hash was defined, as otherwise from the way
git_get_hash_by_path() is called (and works), we know that it is
a blob,
* use modern calling convention for git-blame,
* remove unused variable,
* don't use implicit variables ($_),
* add some comments
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Luben Tuikov <ltuikov@yahoo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index e01e1af..ccbf5d4 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -4575,28 +4575,33 @@
}
sub git_blame {
- my $fd;
- my $ftype;
-
+ # permissions
gitweb_check_feature('blame')
- or die_error(403, "Blame view not allowed");
+ or die_error(403, "Blame view not allowed");
+ # error checking
die_error(400, "No file name given") unless $file_name;
$hash_base ||= git_get_head_hash($project);
- die_error(404, "Couldn't find base commit") unless ($hash_base);
+ die_error(404, "Couldn't find base commit") unless $hash_base;
my %co = parse_commit($hash_base)
or die_error(404, "Commit not found");
+ my $ftype = "blob";
if (!defined $hash) {
$hash = git_get_hash_by_path($hash_base, $file_name, "blob")
or die_error(404, "Error looking up file");
+ } else {
+ $ftype = git_get_type($hash);
+ if ($ftype !~ "blob") {
+ die_error(400, "Object is not a blob");
+ }
}
- $ftype = git_get_type($hash);
- if ($ftype !~ "blob") {
- die_error(400, "Object is not a blob");
- }
- open ($fd, "-|", git_cmd(), "blame", '-p', '--',
- $file_name, $hash_base)
+
+ # run git-blame --porcelain
+ open my $fd, "-|", git_cmd(), "blame", '-p',
+ $hash_base, '--', $file_name
or die_error(500, "Open git-blame failed");
+
+ # page header
git_header_html();
my $formats_nav =
$cgi->a({-href => href(action=>"blob", -replay=>1)},
@@ -4610,40 +4615,44 @@
git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
git_print_page_path($file_name, $ftype, $hash_base);
- my @rev_color = (qw(light2 dark2));
+
+ # page body
+ my @rev_color = qw(light2 dark2);
my $num_colors = scalar(@rev_color);
my $current_color = 0;
- my $last_rev;
+ my %metainfo = ();
+
print <<HTML;
<div class="page_body">
<table class="blame">
<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
HTML
- my %metainfo = ();
- while (1) {
- $_ = <$fd>;
- last unless defined $_;
+ LINE:
+ while (my $line = <$fd>) {
+ chomp $line;
+ # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
+ # no <lines in group> for subsequent lines in group of lines
my ($full_rev, $orig_lineno, $lineno, $group_size) =
- /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
+ ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
if (!exists $metainfo{$full_rev}) {
$metainfo{$full_rev} = {};
}
my $meta = $metainfo{$full_rev};
- while (<$fd>) {
- last if (s/^\t//);
- if (/^(\S+) (.*)$/) {
+ my $data;
+ while ($data = <$fd>) {
+ chomp $data;
+ last if ($data =~ s/^\t//); # contents of line
+ if ($data =~ /^(\S+) (.*)$/) {
$meta->{$1} = $2;
}
}
- my $data = $_;
- chomp $data;
- my $rev = substr($full_rev, 0, 8);
+ my $short_rev = substr($full_rev, 0, 8);
my $author = $meta->{'author'};
- my %date = parse_date($meta->{'author-time'},
- $meta->{'author-tz'});
+ my %date =
+ parse_date($meta->{'author-time'}, $meta->{'author-tz'});
my $date = $date{'iso-tz'};
if ($group_size) {
- $current_color = ++$current_color % $num_colors;
+ $current_color = ($current_color + 1) % $num_colors;
}
print "<tr id=\"l$lineno\" class=\"$rev_color[$current_color]\">\n";
if ($group_size) {
@@ -4654,7 +4663,7 @@
print $cgi->a({-href => href(action=>"commit",
hash=>$full_rev,
file_name=>$file_name)},
- esc_html($rev));
+ esc_html($short_rev));
print "</td>\n";
}
open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
@@ -4677,6 +4686,8 @@
print "</div>";
close $fd
or print "Reading blob failed\n";
+
+ # page footer
git_footer_html();
}
