+# indexes all unindexed messages
+sub index_sync {
+ my ($self, $git) = @_;
+ my $db = $self->{xdb};
+ my $latest = $db->get_metadata('last_commit');
+ my $range = length $latest ? "$latest..HEAD" : 'HEAD';
+ $latest = undef;
+
+ my $hex = '[a-f0-9]';
+ my $h40 = $hex .'{40}';
+ my $addmsg = qr!^:000000 100644 \S+ ($h40) A\t${hex}{2}/${hex}{38}$!;
+ my $delmsg = qr!^:100644 000000 ($h40) \S+ D\t${hex}{2}/${hex}{38}$!;
+
+ # get indexed messages
+ my @cmd = ('git', "--git-dir=$git->{git_dir}", "log",
+ qw/--reverse --no-notes --no-color --raw -r --no-abbrev/,
+ $range);
+
+ my $pid = open(my $log, '-|', @cmd) or
+ die('open` '.join(' ', @cmd) . " pipe failed: $!\n");
+ my $last;
+ while (my $line = <$log>) {
+ if ($line =~ /$addmsg/o) {
+ $self->index_blob($git, $1);
+ } elsif ($line =~ /$delmsg/o) {
+ $self->unindex_blob($git, $1);
+ } elsif ($line =~ /^commit ($h40)/o) {
+ my $commit = $1;
+ if (defined $latest) {
+ $db->set_metadata('last_commit', $latest)
+ }
+ $latest = $commit;
+ }
+ }
+ close $log;
+ $db->set_metadata('last_commit', $latest) if defined $latest;
+}
+