/usr/lib/x86_64-linux-gnu/perl5/5.24/LucyX/Index/ZlibDocWriter.pm is in liblucy-perl 0.3.3-7+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | # Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
use strict;
package LucyX::Index::ZlibDocWriter;
use base qw( Lucy::Index::DataWriter );
use Carp;
use Scalar::Util qw( blessed );
use Compress::Zlib qw( compress );
use Lucy::Util::StringHelper qw( cat_bytes );
use Lucy qw( to_perl );
use bytes;
no bytes;
our $VERSION = '0.003003';
$VERSION = eval $VERSION;
# Inside-out member vars.
our %ix_out;
our %dat_out;
# Inherit constructor.
sub _lazy_init {
my $self = shift;
# Get outstreams. Skip past non-doc #0.
my $folder = $self->get_folder;
my $ix_file = $self->get_segment->get_name . "/zdocs.ix";
my $dat_file = $self->get_segment->get_name . "/zdocs.dat";
$ix_out{$$self} = $folder->open_out($ix_file)
or confess Lucy->error;
$dat_out{$$self} = $folder->open_out($dat_file)
or confess Lucy->error;
$ix_out{$$self}->write_i64(0);
}
sub add_inverted_doc {
my ( $self, %args ) = @_;
_lazy_init($self) unless $ix_out{$$self};
my $inverter = $args{inverter};
my $ix_out = $ix_out{$$self};
my $dat_out = $dat_out{$$self};
# Check doc id.
my $expected = $ix_out->tell / 8;
confess("Expected doc id $expected, got '$args{doc_id}'")
unless $args{doc_id} == $expected;
my $to_compress = "";
my $count = 0;
my $schema = $self->get_schema;
$inverter->iterate;
while ( $inverter->next ) {
next unless $inverter->get_type->stored;
my $name = $inverter->get_field_name;
my $value = $inverter->get_value;
cat_bytes( $to_compress, pack( "w", bytes::length($name) ) );
cat_bytes( $to_compress, $name );
cat_bytes( $to_compress, pack( "w", bytes::length($value) ) );
cat_bytes( $to_compress, $value );
$count++;
}
# Prepend count of fields to store in this Doc.
$to_compress = pack( "w", $count ) . $to_compress;
# Write file pointer to index file. Write compressed serialized string to
# main file.
$ix_out->write_i64( $dat_out->tell );
$dat_out->print( compress($to_compress) );
}
sub add_segment {
my ( $self, %args ) = @_;
my $seg_reader = $args{reader};
my $doc_map = $args{doc_map};
my $doc_max = $seg_reader->doc_max;
# Bail if the supplied segment is empty. */
return unless $doc_max;
_lazy_init($self) unless $ix_out{$$self};
my $ix_out = $ix_out{$$self};
my $dat_out = $dat_out{$$self};
my $doc_reader = $seg_reader->obtain("Lucy::Index::DocReader");
confess("Not a ZlibDocReader")
unless ( blessed($doc_reader)
and $doc_reader->isa("LucyX::Index::ZlibDocReader") );
for ( my $i = 1; $i <= $doc_max; $i++ ) {
next unless $doc_map->get($i);
my $buf;
$doc_reader->read_record( $i, \$buf );
$ix_out->write_i64( $dat_out->tell );
$dat_out->print($buf);
}
}
sub finish {
my $self = shift;
my $ix_out = $ix_out{$$self};
my $dat_out = $dat_out{$$self};
if ($ix_out) {
# Write one extra file pointer so that we can always derive record
# length.
$ix_out->write_i64( $dat_out->tell );
# Close streams and store metadata.
$ix_out->close;
$dat_out->close;
my $segment = $self->get_segment;
$segment->store_metadata(
key => 'zdocs',
metadata => $self->metadata,
);
}
}
sub format {1}
sub DESTROY {
my $self = shift;
delete $ix_out{$$self};
delete $dat_out{$$self};
$self->SUPER::DESTROY;
}
1;
__END__
__POD__
=head1 NAME
LucyX::Index::ZlibDocWriter - Compressed doc storage.
=head1 DESCRIPTION
This is a proof-of-concept class to demonstrate alternate implementations for
fetching documents. It is unsupported.
=cut
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