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<?php
/**
* Rebuild interwiki table using the file on meta and the language list
* Wikimedia specific!
*
* @file
* @todo document
* @ingroup Maintenance
*/
/**
* @todo document
* @ingroup Maintenance
*/
class Site {
var $suffix, $lateral, $url;
function __construct( $s, $l, $u ) {
$this->suffix = $s;
$this->lateral = $l;
$this->url = $u;
}
function getURL( $lang ) {
$xlang = str_replace( '_', '-', $lang );
return "http://$xlang.{$this->url}/wiki/\$1";
}
}
function getRebuildInterwikiDump() {
global $langlist, $languageAliases, $prefixRewrites;
# Multi-language sites
# db suffix => db suffix, iw prefix, hostname
$sites = array(
'wiki' => new Site( 'wiki', 'w', 'wikipedia.org' ),
'wiktionary' => new Site( 'wiktionary', 'wikt', 'wiktionary.org' ),
'wikiquote' => new Site( 'wikiquote', 'q', 'wikiquote.org' ),
'wikibooks' => new Site( 'wikibooks', 'b', 'wikibooks.org' ),
'wikinews' => new Site( 'wikinews', 'n', 'wikinews.org' ),
'wikisource' => new Site( 'wikisource', 's', 'wikisource.org' ),
'wikimedia' => new Site( 'wikimedia', 'chapter', 'wikimedia.org' ),
'wikiversity' => new Site( 'wikiversity', 'v', 'wikiversity.org' ),
);
# List of language prefixes likely to be found in multi-language sites
$langlist = array_map( "trim", file( "/home/wikipedia/common/langlist" ) );
# List of all database names
$dblist = array_map( "trim", file( "/home/wikipedia/common/all.dblist" ) );
# Special-case databases
$specials = array_flip(
array_map( "trim",
file( "/home/wikipedia/common/special.dblist" ) ) );
# Extra interwiki links that can't be in the intermap for some reason
$extraLinks = array(
array( 'm', 'http://meta.wikimedia.org/wiki/$1', 1 ),
array( 'meta', 'http://meta.wikimedia.org/wiki/$1', 1 ),
array( 'sep11', 'http://sep11.wikipedia.org/wiki/$1', 1 ),
);
# Language aliases, usually configured as redirects to the real wiki in apache
# Interlanguage links are made directly to the real wiki
# Something horrible happens if you forget to list an alias here, I can't
# remember what
$languageAliases = array(
'zh-cn' => 'zh',
'zh-tw' => 'zh',
'dk' => 'da',
'nb' => 'no',
);
# Special case prefix rewrites, for the benefit of Swedish which uses s:t
# as an abbreviation for saint
$prefixRewrites = array(
'svwiki' => array ( 's' => 'src'),
);
# Construct a list of reserved prefixes
$reserved = array();
foreach ( $langlist as $lang ) {
$reserved[$lang] = 1;
}
foreach ( $languageAliases as $alias => $lang ) {
$reserved[$alias] = 1;
}
foreach( $sites as $site ) {
$reserved[$site->lateral] = 1;
}
# Extract the intermap from meta
$intermap = Http::get( 'http://meta.wikimedia.org/w/index.php?title=Interwiki_map&action=raw', 30 );
$lines = array_map( 'trim', explode( "\n", trim( $intermap ) ) );
if ( !$lines || count( $lines ) < 2 ) {
wfDie( "m:Interwiki_map not found" );
}
# Global iterwiki map
foreach ( $lines as $line ) {
if ( preg_match( '/^\|\s*(.*?)\s*\|\|\s*(.*?)\s*$/', $line, $matches ) ) {
$prefix = strtolower( $matches[1] );
$url = $matches[2];
if ( preg_match( '/(wikipedia|wiktionary|wikisource|wikiquote|wikibooks|wikimedia)\.org/', $url ) ) {
$local = 1;
} else {
$local = 0;
}
if ( empty( $reserved[$prefix] ) ) {
$imap = array( "iw_prefix" => $prefix, "iw_url" => $url, "iw_local" => $local );
makeLink ($imap, "__global");
}
}
}
# Exclude Wikipedia for Wikipedia
makeLink ( array ('iw_prefix' => 'wikipedia', 'is_url' => null ), "_wiki" );
#Multilanguage sites
foreach ($sites as $site)
makeLanguageLinks ( $site, "_".$site->suffix );
foreach ( $dblist as $db ) {
if ( isset( $specials[$db] ) ) {
# Special wiki
# Has interwiki links and interlanguage links to wikipedia
makeLink( array( 'iw_prefix' => $db, 'iw_url' => "wiki"), "__sites" );
# Links to multilanguage sites
foreach ( $sites as $targetSite ) {
makeLink( array( 'iw_prefix' => $targetSite->lateral,
'iw_url' =>$targetSite->getURL( 'en' ),
'iw_local' => 1 ), $db );
}
} else {
# Find out which site this DB belongs to
$site = false;
foreach( $sites as $candidateSite ) {
$suffix = $candidateSite->suffix;
if ( preg_match( "/(.*)$suffix$/", $db, $matches ) ) {
$site = $candidateSite;
break;
}
}
makeLink( array( 'iw_prefix' => $db, 'iw_url' => $site->suffix), "__sites" );
if ( !$site ) {
print "Invalid database $db\n";
continue;
}
$lang = $matches[1];
# Lateral links
foreach ( $sites as $targetSite ) {
if ( $targetSite->suffix != $site->suffix ) {
makeLink( array( 'iw_prefix' => $targetSite->lateral,
'iw_url' => $targetSite->getURL( $lang ),
'iw_local' => 1 ), $db );
}
}
if ( $site->suffix == "wiki" ) {
makeLink( array('iw_prefix' => 'w',
'iw_url' => "http://en.wikipedia.org/wiki/$1",
'iw_local' => 1), $db );
}
}
}
foreach ( $extraLinks as $link )
makeLink( $link, "__global" );
}
# ------------------------------------------------------------------------------------------
# Executes part of an INSERT statement, corresponding to all interlanguage links to a particular site
function makeLanguageLinks( &$site, $source ) {
global $langlist, $languageAliases;
# Actual languages with their own databases
foreach ( $langlist as $targetLang ) {
makeLink( array( $targetLang, $site->getURL( $targetLang ), 1 ), $source );
}
# Language aliases
foreach ( $languageAliases as $alias => $lang ) {
makeLink( array( $alias, $site->getURL( $lang ), 1 ), $source );
}
}
function makeLink( $entry, $source ) {
global $prefixRewrites, $dbFile;
if ( isset( $prefixRewrites[$source] ) && isset( $prefixRewrites[$source][$entry[0]] ) )
$entry[0] = $prefixRewrites[$source][$entry[0]];
if (!array_key_exists("iw_prefix",$entry))
$entry = array("iw_prefix" => $entry[0], "iw_url" => $entry[1], "iw_local" => $entry[2]);
if ( array_key_exists($source,$prefixRewrites) &&
array_key_exists($entry['iw_prefix'],$prefixRewrites[$source]))
$entry['iw_prefix'] = $prefixRewrites[$source][$entry['iw_prefix']];
if ($dbFile)
dba_insert("{$source}:{$entry['iw_prefix']}", trim("{$entry['iw_local']} {$entry['iw_url']}"),$dbFile);
else
print "{$source}:{$entry['iw_prefix']} {$entry['iw_url']} {$entry['iw_local']}\n";
}
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