NAME¶
Parse::MediaWikiDump::Links - Object capable of processing link dump files
ABOUT¶
This object is used to access content of the SQL based category dump files by
providing an iterative interface for extracting the individual article links
to the same. Objects returned are an instance of Parse::MediaWikiDump::link.
SYNOPSIS¶
use MediaWiki::DumpFile::Compat;
$pmwd = Parse::MediaWikiDump->new;
$links = $pmwd->links('pagelinks.sql');
$links = $pmwd->links(\*FILEHANDLE);
#print the links between articles
while(defined($link = $links->next)) {
print 'from ', $link->from, ' to ', $link->namespace, ':', $link->to, "\n";
}
METHODS¶
- Parse::MediaWikiDump::Links->new
- Create a new instance of a page links dump file parser
- $links->next
- Return the next available Parse::MediaWikiDump::link object or undef if
there is no more data left
EXAMPLE¶
List all links between articles in a friendly way¶
#!/usr/bin/perl
use strict;
use warnings;
use MediaWiki::DumpFile::Compat;
my $pmwd = Parse::MediaWikiDump->new;
my $links = $pmwd->links(shift) or die "must specify a pagelinks dump file";
my $dump = $pmwd->pages(shift) or die "must specify an article dump file";
my %id_to_namespace;
my %id_to_pagename;
binmode(STDOUT, ':utf8');
#build a map between namespace ids to namespace names
foreach (@{$dump->namespaces}) {
my $id = $_->[0];
my $name = $_->[1];
$id_to_namespace{$id} = $name;
}
#build a map between article ids and article titles
while(my $page = $dump->next) {
my $id = $page->id;
my $title = $page->title;
$id_to_pagename{$id} = $title;
}
$dump = undef; #cleanup since we don't need it anymore
while(my $link = $links->next) {
my $namespace = $link->namespace;
my $from = $link->from;
my $to = $link->to;
my $namespace_name = $id_to_namespace{$namespace};
my $fully_qualified;
my $from_name = $id_to_pagename{$from};
if ($namespace_name eq '') {
#default namespace
$fully_qualified = $to;
} else {
$fully_qualified = "$namespace_name:$to";
}
print "Article \"$from_name\" links to \"$fully_qualified\"\n";
}