maintenance/dumpInterwiki.inc

   1 <?php
   2 /**
   3  * Rebuild interwiki table using the file on meta and the language list
   4  * Wikimedia specific!
   5  *
   6  * @todo document
   7  * @package MediaWiki
   8  * @subpackage Maintenance
   9  */
  10
  11 /** */
  12
  13 /**
  14  * @todo document
  15  * @package MediaWiki
  16  * @subpackage Maintenance
  17  */
  18 class Site {
  19         var $suffix, $lateral, $url;
  20
  21         function Site( $s, $l, $u ) {
  22                 $this->suffix = $s;
  23                 $this->lateral = $l;
  24                 $this->url = $u;
  25         }
  26
  27         function getURL( $lang ) {
  28                 $xlang = str_replace( '_', '-', $lang );
  29                 return "http://$xlang.{$this->url}/wiki/\$1";
  30         }
  31 }
  32
  33 function getRebuildInterwikiDump() {
  34         global $langlist, $languageAliases, $prefixRewrites;
  35
  36         # Multi-language sites
  37         # db suffix => db suffix, iw prefix, hostname
  38         $sites = array(
  39                 'wiki' => new Site( 'wiki', 'w', 'wikipedia.org' ),
  40                 'wiktionary' => new Site( 'wiktionary', 'wikt', 'wiktionary.org' ),
  41                 'wikiquote' => new Site( 'wikiquote', 'q', 'wikiquote.org' ),
  42                 'wikibooks' => new Site( 'wikibooks', 'b', 'wikibooks.org' ),
  43                 'wikinews' => new Site( 'wikinews', 'n', 'wikinews.org' ),
  44                 'wikisource' => new Site( 'wikisource', 's', 'wikisource.org' ),
  45                 'wikimedia' => new Site( 'wikimedia', 'chapter', 'wikimedia.org' ),
  46                 'wikiversity' => new Site( 'wikiversity', 'v', 'wikiversity.org' ),
  47         );
  48
  49         # List of language prefixes likely to be found in multi-language sites
  50         $langlist = array_map( "trim", file( "/home/wikipedia/common/langlist" ) );
  51
  52         # List of all database names
  53         $dblist = array_map( "trim", file( "/home/wikipedia/common/all.dblist" ) );
  54
  55         # Special-case hostnames
  56         $specials = array(
  57                 'sourceswiki' => 'sources.wikipedia.org',
  58                 'quotewiki' => 'wikiquote.org',
  59                 'textbookwiki' => 'wikibooks.org',
  60                 'sep11wiki' => 'sep11.wikipedia.org',
  61                 'metawiki' => 'meta.wikimedia.org',
  62                 'commonswiki' => 'commons.wikimedia.org',
  63         );
  64
  65         # Extra interwiki links that can't be in the intermap for some reason
  66         $extraLinks = array(
  67                 array( 'm', 'http://meta.wikimedia.org/wiki/$1', 1 ),
  68                 array( 'meta', 'http://meta.wikimedia.org/wiki/$1', 1 ),
  69                 array( 'sep11', 'http://sep11.wikipedia.org/wiki/$1', 1 ),
  70         );
  71
  72         # Language aliases, usually configured as redirects to the real wiki in apache
  73         # Interlanguage links are made directly to the real wiki
  74         # Something horrible happens if you forget to list an alias here, I can't
  75         #   remember what
  76         $languageAliases = array(
  77                 'zh-cn' => 'zh',
  78                 'zh-tw' => 'zh',
  79                 'dk' => 'da',
  80                 'nb' => 'no',
  81         );
  82
  83         # Special case prefix rewrites, for the benefit of Swedish which uses s:t
  84         # as an abbreviation for saint
  85         $prefixRewrites = array(
  86                 'svwiki' => array ( 's' => 'src'),
  87         );
  88
  89         # Construct a list of reserved prefixes
  90         $reserved = array();
  91         foreach ( $langlist as $lang ) {
  92                 $reserved[$lang] = 1;
  93         }
  94         foreach ( $languageAliases as $alias => $lang ) {
  95                 $reserved[$alias] = 1;
  96         }
  97         foreach( $sites as $site ) {
  98                 $reserved[$site->lateral] = 1;
  99         }
 100
 101         # Extract the intermap from meta
 102         $intermap = wfGetHTTP( 'http://meta.wikimedia.org/w/index.php?title=Interwiki_map&action=raw', 30 );
 103         $lines = array_map( 'trim', explode( "\n", trim( $intermap ) ) );
 104
 105         if ( !$lines || count( $lines ) < 2 ) {
 106                 wfDie( "m:Interwiki_map not found" );
 107         }
 108
 109         $iwArray = array();
 110         # Global iterwiki map
 111         foreach ( $lines as $line ) {
 112                 if ( preg_match( '/^\|\s*(.*?)\s*\|\|\s*(.*?)\s*$/', $line, $matches ) ) {
 113                         $prefix = strtolower( $matches[1] );
 114                         $url = $matches[2];
 115                         if ( preg_match( '/(wikipedia|wiktionary|wikisource|wikiquote|wikibooks|wikimedia)\.org/', $url ) ) {
 116                                 $local = 1;
 117                         } else {
 118                                 $local = 0;
 119                         }
 120
 121                         if ( empty( $reserved[$prefix] ) ) {
 122                             $imap  = array( "iw_prefix" => $prefix, "iw_url" => $url, "iw_local" => $local );
 123                             makeLink ($imap, "__global");
 124                         }
 125                 }
 126         }
 127
 128         # Exclude Wikipedia for Wikipedia
 129         makeLink ( array ('iw_prefix' => 'wikipedia', 'is_url' => null ), "_wiki" );
 130
 131         #Multilanguage sites
 132         foreach ($sites as $site)
 133             $sql .= makeLanguageLinks ( $site, "_".$site->suffix );
 134
 135
 136         foreach ( $dblist as $db ) {
 137                 if ( isset( $specials[$db] ) ) {
 138                         # Special wiki
 139                         # Has interwiki links and interlanguage links to wikipedia
 140
 141                         makeLink( array( 'iw_prefix' => $db, 'iw_url' => "wiki"), "__sites" );
 142                         # Links to multilanguage sites
 143                         foreach ( $sites as $targetSite ) {
 144                                 makeLink( array( 'iw_prefix' => $targetSite->lateral,
 145                                                     'iw_url' =>$targetSite->getURL( 'en' ),
 146                                                     'iw_local' => 1 ), $db );
 147                         }
 148
 149                 } else {
 150                         # Find out which site this DB belongs to
 151                         $site = false;
 152                         foreach( $sites as $candidateSite ) {
 153                                 $suffix = $candidateSite->suffix;
 154                                 if ( preg_match( "/(.*)$suffix$/", $db, $matches ) ) {
 155                                 $site = $candidateSite;
 156                                         break;
 157                                 }
 158                         }
 159                         makeLink( array( 'iw_prefix' => $db, 'iw_url' => $site->suffix), "__sites" );
 160                         if ( !$site ) {
 161                                 print "Invalid database $db\n";
 162                                 continue;
 163                         }
 164                         $lang = $matches[1];
 165                         $host = "$lang." . $site->url;
 166
 167                         # Lateral links
 168                         foreach ( $sites as $targetSite ) {
 169                                 if ( $targetSite->suffix != $site->suffix ) {
 170                                         makeLink( array( 'iw_prefix' => $targetSite->lateral,
 171                                                             'iw_url' => $targetSite->getURL( $lang ),
 172                                                             'iw_local' => 1 ), $db );
 173                                 }
 174                         }
 175
 176                         if ( $site->suffix == "wiki" ) {
 177                                 makeLink( array('iw_prefix' => 'w',
 178                                                 'iw_url' => "http://en.wikipedia.org/wiki/$1",
 179                                                 'iw_local' => 1), $db );
 180                         }
 181
 182                 }
 183         }
 184         foreach ( $extraLinks as $link )
 185                 makeLink( $link, "__global" );
 186 }
 187
 188 # ------------------------------------------------------------------------------------------
 189
 190 # Returns part of an INSERT statement, corresponding to all interlanguage links to a particular site
 191 function makeLanguageLinks( &$site, $source ) {
 192         global $langlist, $languageAliases;
 193         # Actual languages with their own databases
 194         foreach ( $langlist as $targetLang ) {
 195                 makeLink( array( $targetLang, $site->getURL( $targetLang ), 1 ), $source );
 196         }
 197
 198         # Language aliases
 199         foreach ( $languageAliases as $alias => $lang ) {
 200                 makeLink( array( $alias, $site->getURL( $lang ), 1 ), $source );
 201         }
 202 }
 203
 204 function makeLink( $entry, $source ) {
 205         global $prefixRewrites, $dbFile;
 206         if ( isset( $prefixRewrites[$source] ) && isset( $prefixRewrites[$source][$entry[0]] ) )
 207                 $entry[0] = $prefixRewrites[$source][$entry[0]];
 208         if (!array_key_exists("iw_prefix",$entry))
 209             $entry = array("iw_prefix" => $entry[0], "iw_url" => $entry[1], "iw_local" => $entry[2]);
 210         if ( array_key_exists($source,$prefixRewrites) &&
 211                 array_key_exists($entry['iw_prefix'],$prefixRewrites[$source]))
 212                     $entry['iw_prefix'] = $prefixRewrites[$source][$entry['iw_prefix']];
 213         if ($dbFile)
 214             dba_insert("{$source}:{$entry['iw_prefix']}", trim("{$entry['iw_local']} {$entry['iw_url']}"),$dbFile);
 215         else
 216             print "{$source}:{$entry['iw_prefix']} {$entry['iw_url']} {$entry['iw_local']}\n";
 217
 218     }
 219
 220 ?>