From 21f55c578f83ecbe042d0af09b79402c9005cf0d Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sat, 17 Jan 2015 13:37:57 +0100
Subject: [PATCH] Add support for filtering individual games from a PGN.

---
 config.pm     | 9 +++++++++
 remoteglot.pl | 8 +++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/config.pm b/config.pm
index 182d6eb..e036a4d 100644
--- a/config.pm
+++ b/config.pm
@@ -7,6 +7,15 @@ package remoteglotconf;
 our $server = "freechess.org";
 our $nick = "SesseBOT";
 our $target = "GMCarlsen";  # FICS username or HTTP to a PGN file.
+
+# Set to non-undef to pick out one specific game from a PGN file with many games.
+# See example.
+our $pgn_filter = undef;
+#our $pgn_filter = sub {
+#	my $pgn = shift;
+#	return $pgn->round() eq '7' && $pgn->white eq 'Carlsen,M';
+#};
+
 our $json_output = "/srv/analysis.sesse.net/www/analysis.json";
 our $json_history_dir = "/srv/analysis.sesse.net/www/history/";  # undef for none.
 
diff --git a/remoteglot.pl b/remoteglot.pl
index 6a5778a..2a6e2a6 100755
--- a/remoteglot.pl
+++ b/remoteglot.pl
@@ -273,6 +273,12 @@ sub handle_pgn {
 		warn "Error in parsing PGN from $url\n";
 	} else {
 		eval {
+			# Skip to the right game.
+			while (defined($remoteglotconf::pgn_filter) &&
+			       !&$remoteglotconf::pgn_filter($pgn)) {
+				$pgn->read_game() or die "Out of games during filtering";
+			}
+
 			$pgn->parse_game({ save_comments => 'yes' });
 			my $pos = Position->start_pos($pgn->white, $pgn->black);
 			my $moves = $pgn->moves;
@@ -309,7 +315,7 @@ sub handle_pgn {
 			}
 		};
 		if ($@) {
-			warn "Error in parsing moves from $url\n";
+			warn "Error in parsing moves from $url: $@\n";
 		}
 	}
 	
-- 
2.39.2