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=head1 NAME |
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|
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SuikaWiki::DB::FileSystem::SuikaWikiCache09 - WikiDatabase interface to SuikaWikiCache/0.9 databases |
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=head1 DESCRIPTION |
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|
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This module provides SuikaWiki WikiDatabase interface to SuikaWikiCache/0.9 |
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format of database. |
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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::SuikaWikiCache09; |
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use strict; |
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our $VERSION=do{my @r=(q$Revision: 1.1 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
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require SuikaWiki::DB::Util; |
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push our @ISA, 'SuikaWiki::DB::Util::template'; |
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my $Sep = '//'; |
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my $Self = '.'; |
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my $Parent = '..'; |
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|
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sub new ($%) { |
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my $self = shift->SUPER::new (@_); |
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my %opt = @_; |
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$self->{directory} = $opt{directory} |
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or report SuikaWiki::DB::Util::Error |
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-type => 'DB_METHOD_PARAMETER_REQUIRED', |
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-object => $self, method => 'new', |
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parameter => 'directory'; |
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$self->{directory} .= '/' unless substr ($self->{directory}, -1, 1) eq '/'; |
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$self->{prefix} = $opt{prefix} || '.tmp.cache.'; |
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$self->{suffix} = $opt{suffix} || '.dat'; |
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$self->{expires} = $opt{expires} || 86400; |
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$self->{removes} = $opt{removes} || 604800; |
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$self->{now} = $opt{now}; |
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$self; |
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} |
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|
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sub __encode_base16 ($$) { |
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my ($self, $s) = @_; |
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$s =~ s/(.)/sprintf '%02X', ord $1/ges; |
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$s; |
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} |
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sub __decode_base16 ($$) { |
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my ($self, $s) = @_; |
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$s =~ s/([0-9A-Fa-f]{2})/chr hex $1/ge; |
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$s; |
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} |
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|
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sub ___open_prop ($$) { |
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my ($self, $opt) = @_; |
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local $Error::Depth = $Error::Depth + 1; |
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my $file = $self->{directory} |
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.$self->{prefix} |
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.$self->__encode_base16 ($opt->{prop}) |
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.$self->{suffix}; |
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unless (-e $file) { |
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$self->{db_hash}->{$opt->{prop}} = {}; |
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} else { |
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CORE::open DB, '<', $file |
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or report SuikaWiki::DB::Util::Error |
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-type => 'STOP_DB_PROP_CANT_OPEN', file => $file, |
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msg => $!, prop => $opt->{prop}, |
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-object => $self, method => '__read_meta'; |
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binmode DB; |
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local $/ = undef; |
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my $val = <DB>; |
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CORE::close DB; |
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|
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my $decode = sub {my $s = shift; $s =~ s/%([0-9A-F]{2})/chr hex $1/ge; $s}; |
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my $now = $self->{now} || time; |
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|
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if ($val =~ s!^\#\?SuikaWikiCache/0.9[^\x02]*\x02!!s) { |
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$self->{db_hash}->{$opt->{prop}} = |
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{map {$decode->($_->[0]) => [$decode->($_->[1]), $_->[2]]} |
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grep {$_->[2] + $self->{removes} > $now} |
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map {[split /\x1F/, $_, 3]} |
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split /\x1E/, $val}; |
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} elsif (length $val) { |
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report SuikaWiki::DB::Util::Error |
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-type => 'DB_UNSUPPORTED_FORMAT', file => $file, |
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method => '__read_meta', -object => $self, |
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prop => $opt->{prop}; |
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} else { ## Blank file |
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$self->{db_hash}->{$opt->{prop}} = {}; |
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} |
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} |
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$self->{prop_modified}->{$opt->{prop}} = 0; |
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} |
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|
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sub ___close_prop ($$) { |
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my ($self, $opt) = @_; |
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local $Error::Depth = $Error::Depth + 1; |
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unless ($self->{prop_modified}->{$opt->{prop}}) { |
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report SuikaWiki::DB::Util::Error |
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-type => 'INFO_DB_PROP_NOT_MODIFIED', |
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-object => $self, method => '___close_prop', |
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prop => $opt->{prop}; |
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return; |
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} |
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if ($self->{lock} and not $self->{lock}->locked) { |
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$self->{lock}->lock |
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or report SuikaWiki::DB::Util::Error |
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-type => 'LOCK_START', method => '__write_meta', |
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-object => $self, prop => $opt->{prop}; |
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} |
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report SuikaWiki::DB::Util::Error |
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-type => 'DB_READ_ONLY', method => '___close_prop' |
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-object => $self, |
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if $self->{lock} and not $self->{lock}->writable; |
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my $file = $opt->{prop}; |
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$file = $self->{directory}.$self->{prefix}.$self->__encode_base16 ($file) |
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.$self->{suffix}; |
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|
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my $encode = sub {my $s = $_[0]; $s =~ s/([\x00-\x1F%])/sprintf '%%%02X', ord $1/ge; $s}; |
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my $temp = $file.'.'.time.'.tmp'; |
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CORE::open FILE, '>', $temp |
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or report SuikaWiki::DB::Util::Error |
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-type => 'STOP_DB_PROP_CANT_SAVE', msg => $!, |
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method => '___close_prop', file => $file, |
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prop => $opt->{prop}, -object => $self; |
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binmode FILE; |
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print FILE "#?SuikaWikiCache/0.9\n\x02" |
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.join "\x1E", |
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map { |
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my ($n, $v) = ($_, $self->{db_hash}->{$opt->{prop}}->{$_}); |
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$encode->($n)."\x1F".$encode->($v->[0]) |
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."\x1F".(0+$v->[1]); |
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} |
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keys %{$self->{db_hash}->{$opt->{prop}}}; |
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CORE::close FILE; |
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if (-e $file) { |
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unlink $file or report SuikaWiki::DB::Util::Error |
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-type => 'STOP_DB_PROP_CANT_SAVE', file => $file, |
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method => '___close_prop (unlink)', |
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msg => $!, prop => $opt->{prop}, |
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-object => $self; |
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} |
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rename $temp => $file |
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or report SuikaWiki::DB::Util::Error |
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-type => 'STOP_DB_PROP_CANT_SAVE', file => $file, |
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method => '___close_prop (rename)', |
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msg => $!, prop => $opt->{prop}, |
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-object => $self; |
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$self->{prop_modified}->{$opt->{prop}} = 0; |
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report SuikaWiki::DB::Util::Error |
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-type => 'INFO_DB_PROP_WROTE', |
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-object => $self, method => '___close_prop', |
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file => $file, prop => $opt->{prop}; |
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CORE::delete $self->{db_hash}->{$opt->{prop}}; |
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} |
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|
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sub __name2name ($$) { |
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my ($self, $key) = @_; |
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join $Sep, @$key; |
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} |
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|
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sub __check_name ($$) { |
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my ($self, $key) = @_; |
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return 0 unless ref $key; |
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for (@$key) { |
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return 0 unless $_; # '' or 0 or undef |
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# return 0 if index ($_, $Sep) > -1; |
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# return 0 if $_ eq $Self || $_ eq $Parent; |
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} |
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return 1; |
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} |
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|
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sub get ($$$) { |
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my ($self, $prop, $key) = @_; |
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unless ($self->{opened}->{$prop}) { |
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local $Error::Depth = $Error::Depth + 1; |
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$self->open_prop (prop => $prop); |
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} |
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my $v = $self->{db_hash}->{$prop}->{ $self->__name2name ($key) }; |
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if (ref $v and $v->[1] + $self->{expires} > ($self->{now} || time)) { |
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return $v->[0]; |
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} else { |
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return undef; |
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} |
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} |
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|
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sub set ($$$$) { |
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my ($self, $prop, $key => $value) = @_; |
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report SuikaWiki::DB::Util::Error |
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-type => 'KEY_INVALID_NAME', |
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-object => $self, method => 'set', |
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prop => $prop, key => $key |
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unless $self->__check_name ($key); |
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unless ($self->{opened}->{$prop}) { |
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local $Error::Depth = $Error::Depth + 1; |
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$self->open_prop (prop => $prop); |
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} |
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$self->{prop_modified}->{$prop} = 1; |
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$self->{db_hash}->{$prop}->{ $self->__name2name ($key) } |
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= [$value, $self->{now} || time]; |
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} |
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|
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sub exist ($$$) { |
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my ($self, $prop, $key) = @_; |
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return 0 unless $self->__check_name ($key); |
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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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my $v = $self->{db_hash}->{$prop}->{ $self->__name2name ($key) }; |
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if (ref $v and $v->[1] + $self->{expires} > ($self->{now} || time)) { |
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1; |
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} else { |
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0; |
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} |
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} |
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|
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sub delete ($$$) { |
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my ($self, $prop, $key) = @_; |
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unless ($self->{opened}->{$prop}) { |
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local $Error::Depth = $Error::Depth + 1; |
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$self->open_prop (prop => $prop); |
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} |
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$self->{prop_modified}->{$prop} = 1; |
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CORE::delete $self->{db_hash}->{$prop}->{ $self->__name2name ($key) }; |
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} |
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sub keys ($$;%) { |
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my ($self, $prop, %opt) = @_; |
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unless ($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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my $ns = $self->__name2name ($opt{ns}) . $Sep; |
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my $ns_l = length $ns; |
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my @result; |
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my $now = $self->{now} || time; |
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for (grep {ref $_ and $_->[1] + $self->{expires} > $now} |
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CORE::keys %{$self->{db_hash}->{$prop}}) { |
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## Namespace matchs |
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if (substr ($_, 0, $ns_l) eq $ns) { |
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## Child or grandchild in recursive mode |
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if ($opt{recursive} || not (index ($_, $Sep) > -1)) { |
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push @result, $_; |
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} |
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} |
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} |
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return map {[split /\Q$Sep\E/, $_]} @result; |
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} |
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|
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# close: Inherited |
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|
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# DESTROY: Inherited |
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|
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=head1 METHODS |
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|
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This module provides common interface of SuikaWiki WikiDatabase |
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modules. See C<SuikaWiki::DB>. |
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|
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=head1 AUTHOR |
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|
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Wakaba <[email protected]>. |
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|
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=head1 LICENSE |
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|
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Copyright 2004 Wakaba <[email protected]>. 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: 2004/02/07 02:48:35 $ |
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