Added only_committed_changes config setting, which speeds up wiki refresh by querying git to find the files that were changed, rather than looking at the work tree. Not enabled by default as it can break some setups where not all files get committed to git.

1 files changed, 45 insertions, 6 deletions

diff --git a/IkiWiki/Plugin/git.pm b/IkiWiki/Plugin/git.pm
index bbdcbdba8..1dbf00d55 100644
--- a/IkiWiki/Plugin/git.pm
+++ b/IkiWiki/Plugin/git.pm
@@ -29,6 +29,8 @@ sub import {
 	hook(type => "rcs", id => "rcs_receive", call => \&rcs_receive);
 	hook(type => "rcs", id => "rcs_preprevert", call => \&rcs_preprevert);
 	hook(type => "rcs", id => "rcs_revert", call => \&rcs_revert);
+	hook(type => "rcs", id => "rcs_find_changes", call => \&rcs_find_changes);
+	hook(type => "rcs", id => "rcs_get_current_rev", call => \&rcs_get_current_rev);
 }
 
 sub checkconfig () {
@@ -462,19 +464,56 @@ sub git_commit_info ($;$) {
 	return wantarray ? @ci : $ci[0];
 }
 
-sub git_sha1 (;$) {
-	# Return head sha1sum (of given file).
-	my $file = shift || q{--};
+sub rcs_find_changes ($) {
+	my $oldrev=shift;
 
+	my @raw_lines = run_or_die('git', 'log',
+		'--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
+		'--no-renames', , '--reverse',
+		'-r', "$oldrev..HEAD", '--', '.');
+
+	# Due to --reverse, we see changes in chronological order.
+	my %changed;
+	my %deleted;
+	my $nullsha = 0 x 40;
+	my $newrev;
+	while (my $ci = parse_diff_tree(\@raw_lines)) {
+		$newrev=$ci->{sha1};
+		foreach my $i (@{$ci->{details}}) {
+			my $file=$i->{file};
+			if ($i->{sha1_to} == $nullsha) {
+				delete $changed{$file};
+				$deleted{$file}=1;
+			}
+			else {
+				delete $deleted{$file};
+				$changed{$file}=1;
+			}
+		}
+	}
+
+	return (\%changed, \%deleted, $newrev);
+}
+
+sub git_sha1_file ($) {
+	my $file=shift;
+	git_sha1("--", $file);
+}
+
+sub git_sha1 (@) {
 	# Ignore error since a non-existing file might be given.
 	my ($sha1) = run_or_non('git', 'rev-list', '--max-count=1', 'HEAD',
-		'--', $file);
+		'--', @_);
 	if (defined $sha1) {
 		($sha1) = $sha1 =~ m/($sha1_pattern)/; # sha1 is untainted now
 	}
 	return defined $sha1 ? $sha1 : '';
 }
 
+sub rcs_get_current_rev () {
+	git_sha1();
+}
+
 sub rcs_update () {
 	# Update working directory.
 
@@ -488,7 +527,7 @@ sub rcs_prepedit ($) {
 	# This will be later used in rcs_commit if a merge is required.
 	my ($file) = @_;
 
-	return git_sha1($file);
+	return git_sha1_file($file);
 }
 
 sub rcs_commit (@) {
@@ -499,7 +538,7 @@ sub rcs_commit (@) {
 
 	# Check to see if the page has been changed by someone else since
 	# rcs_prepedit was called.
-	my $cur    = git_sha1($params{file});
+	my $cur    = git_sha1_file($params{file});
 	my ($prev) = $params{token} =~ /^($sha1_pattern)$/; # untaint
 
 	if (defined $cur && defined $prev && $cur ne $prev) {