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=head1 NAME |
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|
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SuikaWiki::DB::FileSystem::LeafFile - SuikaWiki Directory-Structured Simple Database |
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|
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=head1 SYNOPSIS |
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|
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require SuikaWiki::DB::FileSystem::LeafFile; |
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my $db = SuikaWiki::DB::FileSystem::LeafFile->new |
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(base_directory => $path_to_db, |
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directory_suffix => '.ns', |
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file_suffix => '.txt', |
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-lock => { ..lock property.. }); |
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|
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=head1 DESCRIPTION |
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|
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C<SuikaWiki::DB::FileSystem::LeafFile> provides simple database |
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which maps namespaces to filesystem directories and keys to files. |
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Directories and files names are encoded by base 16 so that user |
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does not need to make key names filesystem safe (but file names is |
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to be unreadable by human). |
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|
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This module is part of SuikaWiki. |
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|
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=cut |
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|
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package SuikaWiki::DB::FileSystem::LeafFile; |
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use strict; |
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our $VERSION=do{my @r=(q$Revision: 1.3 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
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require SuikaWiki::DB::FileSystem::Base; |
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push our @ISA, 'SuikaWiki::DB::FileSystem::Base'; |
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use IO::File; |
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|
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sub get ($$$;%) { |
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my ($self, $prop, $key, %opt) = @_; |
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report SuikaWiki::DB::Util::Error |
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-type => 'KEY_INVALID_NAME', key => $key, |
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-object => $self, method => 'get' |
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unless $opt{no_key_check} or |
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$self->__check_key (key => $key); |
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|
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unless ($self->{opened}->{$prop}) { |
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local $Error::Depth = $Error::Depth + 1; |
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$self->open_prop (prop => $prop); |
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} |
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|
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my $path = $self->__key2filepath (key => $key); |
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|
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if (-e $path) { |
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my $file = new IO::File $path, '<' |
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or report SuikaWiki::DB::Util::Error |
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-type => 'FILE_READ_FAILURE', |
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-object => $self, method => 'get', |
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file => $path, msg => $!; |
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binmode $file; |
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local $/ = undef; |
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return scalar <$file>; |
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} else { |
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return undef; |
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} |
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} |
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|
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sub set ($$$$;%) { |
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my ($self, $prop, $key, $val, %opt) = @_; |
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report SuikaWiki::DB::Util::Error |
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-type => 'KEY_INVALID_NAME', key => $key, |
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-object => $self, method => 'set' |
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unless $opt{no_key_check} or |
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$self->__check_key (key => $key); |
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|
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unless ($self->{opened}->{$prop}) { |
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local $Error::Depth = $Error::Depth + 1; |
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$self->open_prop (prop => $prop); |
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} |
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|
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if ($self->{lock} and not $self->{lock}->writable) { |
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report SuikaWiki::DB::Util::Error |
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-type => 'KEY_SAVE_LOCKED', |
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-object => $self, method => 'set', |
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key => $key, |
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prop => $prop; |
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return 0; |
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} |
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|
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$self->__make_directory (directory => $self->__key2dirpath (fullkey => $key)); |
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my $path = $self->__key2filepath (key => $key); |
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my $file = new IO::File $path, '>' |
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or report SuikaWiki::DB::Util::Error |
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-type => 'FILE_WRITE_FAILURE', |
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-object => $self, method => 'set', |
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file => $path, msg => $!; |
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binmode $file; |
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print $file $val; |
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close $file; |
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1; |
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} |
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|
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sub _content_id ($$$;%) { |
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my ($self, $prop, $key, %opt) = @_; |
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require Digest::SHA1; |
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Digest::SHA1::sha1 ($self->get ($prop, $key, %opt)); |
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} |
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|
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=head1 SEE ALSO |
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|
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C<SuikaWiki::DB::FileSystem::Base>. |
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|
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=head1 LICENSE |
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|
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Copyright 2004 Wakaba <w@suika.fam.cx>. All rights reserved. |
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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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|
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=cut |
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|
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1; # $Date: 2004/06/03 06:38:48 $ |
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