===================================================================
RCS file: /cvs/openbsd/OpenBSDTorrents/lib/BT/MetaInfo/Cached.pm,v
retrieving revision 1.5
retrieving revision 1.11
diff -u -r1.5 -r1.11
--- openbsd/OpenBSDTorrents/lib/BT/MetaInfo/Cached.pm	2005/05/05 21:08:04	1.5
+++ openbsd/OpenBSDTorrents/lib/BT/MetaInfo/Cached.pm	2005/05/21 01:05:13	1.11
@@ -1,4 +1,4 @@
-# $Id: Cached.pm,v 1.5 2005/05/05 20:08:04 andrew Exp $
+# $Id: Cached.pm,v 1.11 2005/05/21 00:05:13 andrew Exp $
 use strict;
 
 package BT::MetaInfo::Cached;
@@ -6,46 +6,39 @@
 require 5.6.0;
 use vars qw( $VERSION @ISA );
 
-use YAML;
-
-#use Digest::SHA1 qw(sha1);
-#use YAML qw/ DumpFile LoadFile /;
-
 use Cache::FileCache;
 use File::Basename;
+use Digest::MD5;
 
 use BT::MetaInfo;
 use base 'BT::MetaInfo';
 
-#use OpenBSDTorrents;
+$VERSION = do { my @r = (q$Id: Cached.pm,v 1.11 2005/05/21 00:05:13 andrew Exp $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
 
-$VERSION = do { my @r = (q$Id: Cached.pm,v 1.5 2005/05/05 20:08:04 andrew Exp $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
-
 sub new
 {
 	my $class = shift;
         my $file  = shift;
 	my $cache_settings = shift;
 
-	$cache_settings->{namespace} ||= 'BT::MetaInfo::Cached';
+	if (ref $file eq 'HASH') {
+		$cache_settings = $file;
+		$file = undef;
+	}
 
+	$cache_settings->{namespace}           ||= 'BT::MetaInfo::Cached';
+	$cache_settings->{default_expires_in}  ||=  7 * 24 * 60 * 60;
+	$cache_settings->{auto_purge_interval} ||=  1 *  1 * 10 * 60;
+
 	my $cache = new Cache::FileCache( $cache_settings );
 
-        my $obj = (defined($file)) ? _load($file, $cache) : {};
+	my $obj = (defined($file)) ? _load($file, $cache) : {};
 
+	bless($obj, $class);
+
 	$obj->{cache} = $cache;
 
-        return(bless($obj, $class));
-}	
-
-sub save {
-	my ($self, $file) = @_;
-	my $basename = basename($file);
-
-	$self->SUPER::save($file, @_);
-
-        my %info_hash = %$self; # unbless
-	$self->cache->set->($basename, \%info_hash)
+        return $obj;
 }
 
 sub _load {
@@ -56,46 +49,57 @@
 	
 	my $info = $cache->get( $basename );
 
+	my $md5;
+	if (defined $info && $info->{'md5'}) {
+		my $old_md5 = delete $info->{'md5'};
+		my $cur_md5 = _MD5_file($file);
+		if ($old_md5 ne $cur_md5) {
+			$cache->remove( $basename );
+			$info = undef;
+		}
+		$md5 = $cur_md5;
+	}
+
 	unless (defined $info) {
 		$info = BT::MetaInfo::_load($file);
+		$info->{'md5'} = $md5;
 		$cache->set( $basename, $info );
+		delete $info->{'md5'};
 	}
+
 	return $info;
 }
 
-#sub cached
-#{
-#	my $self = shift;
-#        my $which_info = shift;
-#	my $file = shift;
-#	my @args = @_;
-#
-#	if (@args) {
-#		return $self->$which_info(@args),
-#	}
-#
-#	return undef unless $which_info;
-#	return $self->$which_info unless $file;
-#
-#	my $info = undef;
-#
-#	if (-e $file) {
-#		#print "Reading meta file: $file\n";
-#		$info = LoadFile($file);
-#	}
-#
-#	unless ($info->{$which_info}) {
-#		my $cur_info = $self->$which_info;
-#
-#		$info->{$which_info} = $cur_info;
-#		DumpFile($file, $info);
-#	}
-#
-#	if (defined $info->{$which_info}) {
-#		return $info->{$which_info};
-#	} else {
-#		return $self->$which_info;
-#	}
-#}
 
-1
+sub save
+{
+	my $self = shift;
+	my $file = shift;
+	my $basename = basename($file);
+
+	my $cache   = delete $self->{'cache'};
+
+	if ( $self->SUPER::save($file, @_) ) {
+		my %info_hash = %$self; # unbless
+
+		$info_hash{'md5'} = _MD5_file($file);
+		$cache->set($basename, \%info_hash)
+	}
+
+	$self->{'cache'} = $cache;
+
+	return 1;
+}
+
+sub _MD5_file
+{
+	my $file = shift;
+
+	my $ctx = Digest::MD5->new;
+	open my $fh, $file or die "Couldn't open FILE '$file': $!";
+	binmode $fh;
+	$ctx->addfile($fh);
+	close $fh;
+
+	return $ctx->hexdigest;
+}