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package Yuki::YukiWikiDBMeta;
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use strict;
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use Yuki::YukiWikiDB2;
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our @ISA;
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push @ISA, q(Yuki::YukiWikiDB2);
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our $VERSION = do{my @r=(q$Revision: 1.26 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
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sub _write_meta ($$) {
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my ($self, $key) = @_;
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$self->_die (qq{_write_meta : method not allowd, mode="$self->{-mode}"}) if $self->{-mode} == 1;
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my $file=$key;&{$self->{-encode}}($file);$file=$self->{-dir}.'mt--'.$file.'.dat';
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my $temp = $file.".".time;
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open (FILE, "> ".$temp) or $self->_die(qq{_write_meta : $! "$temp"});
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binmode FILE;
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print FILE "#?SuikaWikiMetaInfo/0.9\n\x02".join "\x1E", map {$_."\x1F".$self->{-metainfo}->{$key}->{$_}} grep {length $self->{-metainfo}->{$key}->{$_}} keys %{$self->{-metainfo}->{$key}};
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close FILE;
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if (-e $file){
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unlink $file or $self->_die(qq{_write_meta : $! "$file"});
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}
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rename($temp => $file) or $self->_die(qq{_write_meta : $! "$temp" => "$file"});
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}
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sub _read_meta ($$) {
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my ($self, $key) = @_;
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return if ref $self->{-metainfo}->{$key};
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my $file=$key;&{$self->{-encode}}($file);$file=$self->{-dir}.'mt--'.$file.'.dat';
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if (-e $file) {
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open (FILE, $file) or $self->_die (qq{_read_meta : $! "$file"});
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binmode FILE;
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local $/ = undef;
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my $val = <FILE>;
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close FILE;
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if ($val =~ s!^\#\?SuikaWikiMetaInfo/0.9[^\x02]*\x02!!s) {
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$self->{-metainfo}->{$key} = {map {split /\x1F/, $_, 2} split /\x1E/, $val};
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} else {
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$self->{-metainfo}->{$key} = {};
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}
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}
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}
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sub STORE {
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my $self = shift;
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my ($key, $val, %option) = @_;
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$self->SUPER::STORE (@_);
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if (!exists $option{-touch} || $option{-touch}) {
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$self->_read_meta ('LastModified');
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$self->{-metainfo}->{LastModified}->{$key} = time;
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$self->{-metainfo}->{-changed}->{LastModified} = 1;
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}
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$val;
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}
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sub UNTIE {
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my $self = shift;
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for (keys %{$self->{-metainfo}->{-changed}}) {
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$self->_write_meta ($_);
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}
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$self->SUPER::UNTIE (@_);
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}
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sub sort_by_mtime{
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my $self = shift or die qq(sort_by_mtime : usage error.);
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my $dbname = $self->{-dir};
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my @key = @_;
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if(not @key){
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@key = map{&{$self->{-decode}}($_)} $self->_list_all();
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}
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$self->_read_meta ('LastModified');
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return map {$_->[1]}
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sort {$b->[0] <=> $a->[0] or $b->[1] cmp $a->[1]}
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map {[$self->{-metainfo}->{LastModified}->{$_},$_]} @key;
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}
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sub mtime ($$;$) {
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my ($self, $key, $val) = @_;
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$self->_read_meta ('LastModified');
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if (defined $val) {
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$self->{-metainfo}->{LastModified}->{$key} = $val;
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$self->{-metainfo}->{-changed}->{LastModified} = 1;
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}
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$self->{-metainfo}->{LastModified}->{$key};
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}
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1;
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__END__
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=head1 NAME
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Yuki::YukiWikiDBMeta --- SuikaWiki: YukiWikiDB2 with meta information extension
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=head1 LICENSE
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Copyright 2003 Wakaba <[email protected]>
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This program is free software; you can redistribute it and/or
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modify it under the same terms as Perl itself.
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=cut
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# $Date: $
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