From 25f422fb87014107bffb265483809909f300c537 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@suse.de>
Date: Tue, 13 Sep 2005 02:21:59 +0200
Subject: [PATCH] switch to git-rev-list for commit reading

This way we don't need to parse the "grafts".

Signed-off-by: Kay Sievers <kay.sievers@suse.de>
---
 gitweb.cgi | 49 ++++++++++++++++++++++++-------------------------
 1 file changed, 24 insertions(+), 25 deletions(-)

diff --git a/gitweb.cgi b/gitweb.cgi
index fa5b6355a6..53980efeba 100755
--- a/gitweb.cgi
+++ b/gitweb.cgi
@@ -443,21 +443,28 @@ sub git_read_commit {
 
 	my @commit_lines;
 	my %co;
-	my @parents;
 
 	if (defined $commit_text) {
 		@commit_lines = @$commit_text;
 	} else {
-		open my $fd, "-|", "$gitbin/git-cat-file commit $commit_id" or return;
-		@commit_lines = map { chomp; $_ } <$fd>;
+		$/ = "\0";
+		open my $fd, "-|", "$gitbin/git-rev-list --header --parents --max-count=1 $commit_id" or return;
+		@commit_lines = split '\n', <$fd>;
 		close $fd or return;
+		$/ = "\n";
+		pop @commit_lines;
 	}
+	my $header = shift @commit_lines;
+	if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
+		return;
+	}
+	($co{'id'}, my @parents) = split ' ', $header;
+	$co{'parents'} = \@parents;
+	$co{'parent'} = $parents[0];
 	while (my $line = shift @commit_lines) {
 		last if $line eq "\n";
 		if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 			$co{'tree'} = $1;
-		} elsif ($line =~ m/^parent ([0-9a-fA-F]{40})$/) {
-			push @parents, $1;
 		} elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 			$co{'author'} = $1;
 			$co{'author_epoch'} = $2;
@@ -476,21 +483,9 @@ sub git_read_commit {
 		}
 	}
 	if (!defined $co{'tree'}) {
-		return undef
+		return;
 	};
-	if (!($commit_id =~ m/^[0-9a-fA-F]{40}$/)) {
-		# lookup hash by textual id
-		open my $fd, "-|", "$gitbin/git-rev-parse --verify $commit_id" or return;
-		my $hash_id = <$fd>;
-		close $fd or return;
-		chomp $hash_id;
-		$co{'id'} = $hash_id
-	} else {
-		$co{'id'} = $commit_id;
-	}
-	$co{'parents'} = \@parents;
-	$co{'parent'} = $parents[0];
-	$co{'comment'} = \@commit_lines;
+
 	foreach my $title (@commit_lines) {
 		if ($title ne "") {
 			$co{'title'} = chop_str($title, 80, 5);
@@ -515,6 +510,11 @@ sub git_read_commit {
 			last;
 		}
 	}
+	# remove added spaces
+	foreach my $line (@commit_lines) {
+		$line =~ s/^    //;
+	}
+	$co{'comment'} = \@commit_lines;
 
 	my $age = time - $co{'committer_epoch'};
 	$co{'age'} = $age;
@@ -2081,7 +2081,7 @@ sub git_search {
 	my $alternate = 0;
 	if ($commit_search) {
 		$/ = "\0";
-		open my $fd, "-|", "$gitbin/git-rev-list --header $hash";
+		open my $fd, "-|", "$gitbin/git-rev-list --header --parents $hash" or next;
 		while (my $commit_text = <$fd>) {
 			if (!grep m/$searchtext/i, $commit_text) {
 				next;
@@ -2093,8 +2093,7 @@ sub git_search {
 				next;
 			}
 			my @commit_lines = split "\n", $commit_text;
-			my $commit = shift @commit_lines;
-			my %co = git_read_commit($commit, \@commit_lines);
+			my %co = git_read_commit(undef, \@commit_lines);
 			if (!%co) {
 				next;
 			}
@@ -2107,7 +2106,7 @@ sub git_search {
 			print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
 			      "<td><i>" . escapeHTML(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
 			      "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"}, "<b>" . escapeHTML(chop_str($co{'title'}, 50)) . "</b><br/>");
+			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$co{'id'}", -class => "list"}, "<b>" . escapeHTML(chop_str($co{'title'}, 50)) . "</b><br/>");
 			my $comment = $co{'comment'};
 			foreach my $line (@$comment) {
 				if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
@@ -2122,8 +2121,8 @@ sub git_search {
 			}
 			print "</td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") .
-			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$commit"}, "tree");
+			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$co{'id'}"}, "commit") .
+			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}"}, "tree");
 			print "</td>\n" .
 			      "</tr>\n";
 		}