includes/parser/CoreParserFunctions.php

   1 <?php
   2 /**
   3  * Parser functions provided by MediaWiki core
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Parser
  22  */
  23
  24 /**
  25  * Various core parser functions, registered in Parser::firstCallInit()
  26  * @ingroup Parser
  27  */
  28 class CoreParserFunctions {
  29         /**
  30          * @param $parser Parser
  31          * @return void
  32          */
  33         static function register( $parser ) {
  34                 global $wgAllowDisplayTitle, $wgAllowSlowParserFunctions;
  35
  36                 # Syntax for arguments (see self::setFunctionHook):
  37                 #  "name for lookup in localized magic words array",
  38                 #  function callback,
  39                 #  optional SFH_NO_HASH to omit the hash from calls (e.g. {{int:...}}
  40                 #    instead of {{#int:...}})
  41
  42                 $parser->setFunctionHook( 'int',              array( __CLASS__, 'intFunction'      ), SFH_NO_HASH );
  43                 $parser->setFunctionHook( 'ns',               array( __CLASS__, 'ns'               ), SFH_NO_HASH );
  44                 $parser->setFunctionHook( 'nse',              array( __CLASS__, 'nse'              ), SFH_NO_HASH );
  45                 $parser->setFunctionHook( 'urlencode',        array( __CLASS__, 'urlencode'        ), SFH_NO_HASH );
  46                 $parser->setFunctionHook( 'lcfirst',          array( __CLASS__, 'lcfirst'          ), SFH_NO_HASH );
  47                 $parser->setFunctionHook( 'ucfirst',          array( __CLASS__, 'ucfirst'          ), SFH_NO_HASH );
  48                 $parser->setFunctionHook( 'lc',               array( __CLASS__, 'lc'               ), SFH_NO_HASH );
  49                 $parser->setFunctionHook( 'uc',               array( __CLASS__, 'uc'               ), SFH_NO_HASH );
  50                 $parser->setFunctionHook( 'localurl',         array( __CLASS__, 'localurl'         ), SFH_NO_HASH );
  51                 $parser->setFunctionHook( 'localurle',        array( __CLASS__, 'localurle'        ), SFH_NO_HASH );
  52                 $parser->setFunctionHook( 'fullurl',          array( __CLASS__, 'fullurl'          ), SFH_NO_HASH );
  53                 $parser->setFunctionHook( 'fullurle',         array( __CLASS__, 'fullurle'         ), SFH_NO_HASH );
  54                 $parser->setFunctionHook( 'canonicalurl',     array( __CLASS__, 'canonicalurl'     ), SFH_NO_HASH );
  55                 $parser->setFunctionHook( 'canonicalurle',    array( __CLASS__, 'canonicalurle'    ), SFH_NO_HASH );
  56                 $parser->setFunctionHook( 'formatnum',        array( __CLASS__, 'formatnum'        ), SFH_NO_HASH );
  57                 $parser->setFunctionHook( 'grammar',          array( __CLASS__, 'grammar'          ), SFH_NO_HASH );
  58                 $parser->setFunctionHook( 'gender',           array( __CLASS__, 'gender'           ), SFH_NO_HASH );
  59                 $parser->setFunctionHook( 'plural',           array( __CLASS__, 'plural'           ), SFH_NO_HASH );
  60                 $parser->setFunctionHook( 'numberofpages',    array( __CLASS__, 'numberofpages'    ), SFH_NO_HASH );
  61                 $parser->setFunctionHook( 'numberofusers',    array( __CLASS__, 'numberofusers'    ), SFH_NO_HASH );
  62                 $parser->setFunctionHook( 'numberofactiveusers', array( __CLASS__, 'numberofactiveusers' ), SFH_NO_HASH );
  63                 $parser->setFunctionHook( 'numberofarticles', array( __CLASS__, 'numberofarticles' ), SFH_NO_HASH );
  64                 $parser->setFunctionHook( 'numberoffiles',    array( __CLASS__, 'numberoffiles'    ), SFH_NO_HASH );
  65                 $parser->setFunctionHook( 'numberofadmins',   array( __CLASS__, 'numberofadmins'   ), SFH_NO_HASH );
  66                 $parser->setFunctionHook( 'numberingroup',    array( __CLASS__, 'numberingroup'    ), SFH_NO_HASH );
  67                 $parser->setFunctionHook( 'numberofedits',    array( __CLASS__, 'numberofedits'    ), SFH_NO_HASH );
  68                 $parser->setFunctionHook( 'numberofviews',    array( __CLASS__, 'numberofviews'    ), SFH_NO_HASH );
  69                 $parser->setFunctionHook( 'language',         array( __CLASS__, 'language'         ), SFH_NO_HASH );
  70                 $parser->setFunctionHook( 'padleft',          array( __CLASS__, 'padleft'          ), SFH_NO_HASH );
  71                 $parser->setFunctionHook( 'padright',         array( __CLASS__, 'padright'         ), SFH_NO_HASH );
  72                 $parser->setFunctionHook( 'anchorencode',     array( __CLASS__, 'anchorencode'     ), SFH_NO_HASH );
  73                 $parser->setFunctionHook( 'special',          array( __CLASS__, 'special'          ) );
  74                 $parser->setFunctionHook( 'speciale',         array( __CLASS__, 'speciale'         ) );
  75                 $parser->setFunctionHook( 'defaultsort',      array( __CLASS__, 'defaultsort'      ), SFH_NO_HASH );
  76                 $parser->setFunctionHook( 'filepath',         array( __CLASS__, 'filepath'         ), SFH_NO_HASH );
  77                 $parser->setFunctionHook( 'pagesincategory',  array( __CLASS__, 'pagesincategory'  ), SFH_NO_HASH );
  78                 $parser->setFunctionHook( 'pagesize',         array( __CLASS__, 'pagesize'         ), SFH_NO_HASH );
  79                 $parser->setFunctionHook( 'protectionlevel',  array( __CLASS__, 'protectionlevel'  ), SFH_NO_HASH );
  80                 $parser->setFunctionHook( 'namespace',        array( __CLASS__, 'mwnamespace'      ), SFH_NO_HASH );
  81                 $parser->setFunctionHook( 'namespacee',       array( __CLASS__, 'namespacee'       ), SFH_NO_HASH );
  82                 $parser->setFunctionHook( 'namespacenumber',  array( __CLASS__, 'namespacenumber'  ), SFH_NO_HASH );
  83                 $parser->setFunctionHook( 'talkspace',        array( __CLASS__, 'talkspace'        ), SFH_NO_HASH );
  84                 $parser->setFunctionHook( 'talkspacee',       array( __CLASS__, 'talkspacee'       ), SFH_NO_HASH );
  85                 $parser->setFunctionHook( 'subjectspace',     array( __CLASS__, 'subjectspace'     ), SFH_NO_HASH );
  86                 $parser->setFunctionHook( 'subjectspacee',    array( __CLASS__, 'subjectspacee'    ), SFH_NO_HASH );
  87                 $parser->setFunctionHook( 'pagename',         array( __CLASS__, 'pagename'         ), SFH_NO_HASH );
  88                 $parser->setFunctionHook( 'pagenamee',        array( __CLASS__, 'pagenamee'        ), SFH_NO_HASH );
  89                 $parser->setFunctionHook( 'fullpagename',     array( __CLASS__, 'fullpagename'     ), SFH_NO_HASH );
  90                 $parser->setFunctionHook( 'fullpagenamee',    array( __CLASS__, 'fullpagenamee'    ), SFH_NO_HASH );
  91                 $parser->setFunctionHook( 'rootpagename',     array( __CLASS__, 'rootpagename'     ), SFH_NO_HASH );
  92                 $parser->setFunctionHook( 'rootpagenamee',    array( __CLASS__, 'rootpagenamee'    ), SFH_NO_HASH );
  93                 $parser->setFunctionHook( 'basepagename',     array( __CLASS__, 'basepagename'     ), SFH_NO_HASH );
  94                 $parser->setFunctionHook( 'basepagenamee',    array( __CLASS__, 'basepagenamee'    ), SFH_NO_HASH );
  95                 $parser->setFunctionHook( 'subpagename',      array( __CLASS__, 'subpagename'      ), SFH_NO_HASH );
  96                 $parser->setFunctionHook( 'subpagenamee',     array( __CLASS__, 'subpagenamee'     ), SFH_NO_HASH );
  97                 $parser->setFunctionHook( 'talkpagename',     array( __CLASS__, 'talkpagename'     ), SFH_NO_HASH );
  98                 $parser->setFunctionHook( 'talkpagenamee',    array( __CLASS__, 'talkpagenamee'    ), SFH_NO_HASH );
  99                 $parser->setFunctionHook( 'subjectpagename',  array( __CLASS__, 'subjectpagename'  ), SFH_NO_HASH );
 100                 $parser->setFunctionHook( 'subjectpagenamee', array( __CLASS__, 'subjectpagenamee' ), SFH_NO_HASH );
 101                 $parser->setFunctionHook( 'tag',              array( __CLASS__, 'tagObj'           ), SFH_OBJECT_ARGS );
 102                 $parser->setFunctionHook( 'formatdate',       array( __CLASS__, 'formatDate'       ) );
 103                 $parser->setFunctionHook( 'pageid',           array( __CLASS__, 'pageid'           ), SFH_NO_HASH );
 104                 $parser->setFunctionHook( 'revisionid',       array( __CLASS__, 'revisionid'       ), SFH_NO_HASH );
 105                 $parser->setFunctionHook( 'revisionday',      array( __CLASS__, 'revisionday'      ), SFH_NO_HASH );
 106                 $parser->setFunctionHook( 'revisionday2',     array( __CLASS__, 'revisionday2'     ), SFH_NO_HASH );
 107                 $parser->setFunctionHook( 'revisionmonth',    array( __CLASS__, 'revisionmonth'    ), SFH_NO_HASH );
 108                 $parser->setFunctionHook( 'revisionmonth1',   array( __CLASS__, 'revisionmonth1'   ), SFH_NO_HASH );
 109                 $parser->setFunctionHook( 'revisionyear',     array( __CLASS__, 'revisionyear'     ), SFH_NO_HASH );
 110                 $parser->setFunctionHook( 'revisiontimestamp', array( __CLASS__, 'revisiontimestamp' ), SFH_NO_HASH );
 111                 $parser->setFunctionHook( 'revisionuser',     array( __CLASS__, 'revisionuser'     ), SFH_NO_HASH );
 112
 113                 if ( $wgAllowDisplayTitle ) {
 114                         $parser->setFunctionHook( 'displaytitle', array( __CLASS__, 'displaytitle' ), SFH_NO_HASH );
 115                 }
 116                 if ( $wgAllowSlowParserFunctions ) {
 117                         $parser->setFunctionHook( 'pagesinnamespace', array( __CLASS__, 'pagesinnamespace' ), SFH_NO_HASH );
 118                 }
 119         }
 120
 121         /**
 122          * @param $parser Parser
 123          * @param string $part1
 124          * @return array
 125          */
 126         static function intFunction( $parser, $part1 = '' /*, ... */ ) {
 127                 if ( strval( $part1 ) !== '' ) {
 128                         $args = array_slice( func_get_args(), 2 );
 129                         $message = wfMessage( $part1, $args )->inLanguage( $parser->getOptions()->getUserLangObj() )->plain();
 130                         return array( $message, 'noparse' => false );
 131                 } else {
 132                         return array( 'found' => false );
 133                 }
 134         }
 135
 136         /**
 137          * @param $parser Parser
 138          * @param  $date
 139          * @param null $defaultPref
 140          * @return mixed|string
 141          */
 142         static function formatDate( $parser, $date, $defaultPref = null ) {
 143                 $lang = $parser->getFunctionLang();
 144                 $df = DateFormatter::getInstance( $lang );
 145
 146                 $date = trim( $date );
 147
 148                 $pref = $parser->getOptions()->getDateFormat();
 149
 150                 // Specify a different default date format other than the the normal default
 151                 // if the user has 'default' for their setting
 152                 if ( $pref == 'default' && $defaultPref ) {
 153                         $pref = $defaultPref;
 154                 }
 155
 156                 $date = $df->reformat( $pref, $date, array( 'match-whole' ) );
 157                 return $date;
 158         }
 159
 160         static function ns( $parser, $part1 = '' ) {
 161                 global $wgContLang;
 162                 if ( intval( $part1 ) || $part1 == "0" ) {
 163                         $index = intval( $part1 );
 164                 } else {
 165                         $index = $wgContLang->getNsIndex( str_replace( ' ', '_', $part1 ) );
 166                 }
 167                 if ( $index !== false ) {
 168                         return $wgContLang->getFormattedNsText( $index );
 169                 } else {
 170                         return array( 'found' => false );
 171                 }
 172         }
 173
 174         static function nse( $parser, $part1 = '' ) {
 175                 $ret = self::ns( $parser, $part1 );
 176                 if ( is_string( $ret ) ) {
 177                         $ret = wfUrlencode( str_replace( ' ', '_', $ret ) );
 178                 }
 179                 return $ret;
 180         }
 181
 182         /**
 183          * urlencodes a string according to one of three patterns: (bug 22474)
 184          *
 185          * By default (for HTTP "query" strings), spaces are encoded as '+'.
 186          * Or to encode a value for the HTTP "path", spaces are encoded as '%20'.
 187          * For links to "wiki"s, or similar software, spaces are encoded as '_',
 188          *
 189          * @param $parser Parser object
 190          * @param string $s The text to encode.
 191          * @param string $arg (optional): The type of encoding.
 192          * @return string
 193          */
 194         static function urlencode( $parser, $s = '', $arg = null ) {
 195                 static $magicWords = null;
 196                 if ( is_null( $magicWords ) ) {
 197                         $magicWords = new MagicWordArray( array( 'url_path', 'url_query', 'url_wiki' ) );
 198                 }
 199                 switch ( $magicWords->matchStartToEnd( $arg ) ) {
 200
 201                         // Encode as though it's a wiki page, '_' for ' '.
 202                         case 'url_wiki':
 203                                 $func = 'wfUrlencode';
 204                                 $s = str_replace( ' ', '_', $s );
 205                                 break;
 206
 207                         // Encode for an HTTP Path, '%20' for ' '.
 208                         case 'url_path':
 209                                 $func = 'rawurlencode';
 210                                 break;
 211
 212                         // Encode for HTTP query, '+' for ' '.
 213                         case 'url_query':
 214                         default:
 215                                 $func = 'urlencode';
 216                 }
 217                 return $parser->markerSkipCallback( $s, $func );
 218         }
 219
 220         static function lcfirst( $parser, $s = '' ) {
 221                 global $wgContLang;
 222                 return $wgContLang->lcfirst( $s );
 223         }
 224
 225         static function ucfirst( $parser, $s = '' ) {
 226                 global $wgContLang;
 227                 return $wgContLang->ucfirst( $s );
 228         }
 229
 230         /**
 231          * @param $parser Parser
 232          * @param string $s
 233          * @return
 234          */
 235         static function lc( $parser, $s = '' ) {
 236                 global $wgContLang;
 237                 return $parser->markerSkipCallback( $s, array( $wgContLang, 'lc' ) );
 238         }
 239
 240         /**
 241          * @param $parser Parser
 242          * @param string $s
 243          * @return
 244          */
 245         static function uc( $parser, $s = '' ) {
 246                 global $wgContLang;
 247                 return $parser->markerSkipCallback( $s, array( $wgContLang, 'uc' ) );
 248         }
 249
 250         static function localurl( $parser, $s = '', $arg = null ) { return self::urlFunction( 'getLocalURL', $s, $arg ); }
 251         static function localurle( $parser, $s = '', $arg = null ) { return self::urlFunction( 'escapeLocalURL', $s, $arg ); }
 252         static function fullurl( $parser, $s = '', $arg = null ) { return self::urlFunction( 'getFullURL', $s, $arg ); }
 253         static function fullurle( $parser, $s = '', $arg = null ) { return self::urlFunction( 'escapeFullURL', $s, $arg ); }
 254         static function canonicalurl( $parser, $s = '', $arg = null ) { return self::urlFunction( 'getCanonicalURL', $s, $arg ); }
 255         static function canonicalurle( $parser, $s = '', $arg = null ) { return self::urlFunction( 'escapeCanonicalURL', $s, $arg ); }
 256
 257         static function urlFunction( $func, $s = '', $arg = null ) {
 258                 $title = Title::newFromText( $s );
 259                 # Due to order of execution of a lot of bits, the values might be encoded
 260                 # before arriving here; if that's true, then the title can't be created
 261                 # and the variable will fail. If we can't get a decent title from the first
 262                 # attempt, url-decode and try for a second.
 263                 if ( is_null( $title ) ) {
 264                         $title = Title::newFromURL( urldecode( $s ) );
 265                 }
 266                 if ( !is_null( $title ) ) {
 267                         # Convert NS_MEDIA -> NS_FILE
 268                         if ( $title->getNamespace() == NS_MEDIA ) {
 269                                 $title = Title::makeTitle( NS_FILE, $title->getDBkey() );
 270                         }
 271                         if ( !is_null( $arg ) ) {
 272                                 $text = $title->$func( $arg );
 273                         } else {
 274                                 $text = $title->$func();
 275                         }
 276                         return $text;
 277                 } else {
 278                         return array( 'found' => false );
 279                 }
 280         }
 281
 282         /**
 283          * @param $parser Parser
 284          * @param string $num
 285          * @param string $arg
 286          * @return string
 287          */
 288         static function formatnum( $parser, $num = '', $arg = null ) {
 289                 if ( self::matchAgainstMagicword( 'rawsuffix', $arg ) ) {
 290                         $func = array( $parser->getFunctionLang(), 'parseFormattedNumber' );
 291                 } elseif ( self::matchAgainstMagicword( 'nocommafysuffix', $arg ) ) {
 292                         $func = array( $parser->getFunctionLang(), 'formatNumNoSeparators' );
 293                 } else {
 294                         $func = array( $parser->getFunctionLang(), 'formatNum' );
 295                 }
 296                 return $parser->markerSkipCallback( $num, $func );
 297         }
 298
 299         /**
 300          * @param $parser Parser
 301          * @param string $case
 302          * @param string $word
 303          * @return
 304          */
 305         static function grammar( $parser, $case = '', $word = '' ) {
 306                 $word = $parser->killMarkers( $word );
 307                 return $parser->getFunctionLang()->convertGrammar( $word, $case );
 308         }
 309
 310         /**
 311          * @param $parser Parser
 312          * @param $username string
 313          * @return
 314          */
 315         static function gender( $parser, $username ) {
 316                 wfProfileIn( __METHOD__ );
 317                 $forms = array_slice( func_get_args(), 2 );
 318
 319                 // Some shortcuts to avoid loading user data unnecessarily
 320                 if ( count( $forms ) === 0 ) {
 321                         wfProfileOut( __METHOD__ );
 322                         return '';
 323                 } elseif ( count( $forms ) === 1 ) {
 324                         wfProfileOut( __METHOD__ );
 325                         return $forms[0];
 326                 }
 327
 328                 $username = trim( $username );
 329
 330                 // default
 331                 $gender = User::getDefaultOption( 'gender' );
 332
 333                 // allow prefix.
 334                 $title = Title::newFromText( $username );
 335
 336                 if ( $title && $title->getNamespace() == NS_USER ) {
 337                         $username = $title->getText();
 338                 }
 339
 340                 // check parameter, or use the ParserOptions if in interface message
 341                 $user = User::newFromName( $username );
 342                 if ( $user ) {
 343                         $gender = GenderCache::singleton()->getGenderOf( $user, __METHOD__ );
 344                 } elseif ( $username === '' && $parser->getOptions()->getInterfaceMessage() ) {
 345                         $gender = GenderCache::singleton()->getGenderOf( $parser->getOptions()->getUser(), __METHOD__ );
 346                 }
 347                 $ret = $parser->getFunctionLang()->gender( $gender, $forms );
 348                 wfProfileOut( __METHOD__ );
 349                 return $ret;
 350         }
 351
 352         /**
 353          * @param $parser Parser
 354          * @param string $text
 355          * @return
 356          */
 357         static function plural( $parser, $text = '' ) {
 358                 $forms = array_slice( func_get_args(), 2 );
 359                 $text = $parser->getFunctionLang()->parseFormattedNumber( $text );
 360                 settype( $text, ctype_digit( $text ) ? 'int' : 'float' );
 361                 return $parser->getFunctionLang()->convertPlural( $text, $forms );
 362         }
 363
 364         /**
 365          * Override the title of the page when viewed, provided we've been given a
 366          * title which will normalise to the canonical title
 367          *
 368          * @param $parser Parser: parent parser
 369          * @param string $text desired title text
 370          * @return String
 371          */
 372         static function displaytitle( $parser, $text = '' ) {
 373                 global $wgRestrictDisplayTitle;
 374
 375                 // parse a limited subset of wiki markup (just the single quote items)
 376                 $text = $parser->doQuotes( $text );
 377
 378                 // remove stripped text (e.g. the UNIQ-QINU stuff) that was generated by tag extensions/whatever
 379                 $text = preg_replace( '/' . preg_quote( $parser->uniqPrefix(), '/' ) . '.*?'
 380                         . preg_quote( Parser::MARKER_SUFFIX, '/' ) . '/', '', $text );
 381
 382                 // list of disallowed tags for DISPLAYTITLE
 383                 // these will be escaped even though they are allowed in normal wiki text
 384                 $bad = array( 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'div', 'blockquote', 'ol', 'ul', 'li', 'hr',
 385                         'table', 'tr', 'th', 'td', 'dl', 'dd', 'caption', 'p', 'ruby', 'rb', 'rt', 'rp', 'br' );
 386
 387                 // disallow some styles that could be used to bypass $wgRestrictDisplayTitle
 388                 if ( $wgRestrictDisplayTitle ) {
 389                         $htmlTagsCallback = function ( &$params ) {
 390                                 $decoded = Sanitizer::decodeTagAttributes( $params );
 391
 392                                 if ( isset( $decoded['style'] ) ) {
 393                                         // this is called later anyway, but we need it right now for the regexes below to be safe
 394                                         // calling it twice doesn't hurt
 395                                         $decoded['style'] = Sanitizer::checkCss( $decoded['style'] );
 396
 397                                         if ( preg_match( '/(display|user-select|visibility)\s*:/i', $decoded['style'] ) ) {
 398                                                 $decoded['style'] = '/* attempt to bypass $wgRestrictDisplayTitle */';
 399                                         }
 400                                 }
 401
 402                                 $params = Sanitizer::safeEncodeTagAttributes( $decoded );
 403                         };
 404                 } else {
 405                         $htmlTagsCallback = null;
 406                 }
 407
 408                 // only requested titles that normalize to the actual title are allowed through
 409                 // if $wgRestrictDisplayTitle is true (it is by default)
 410                 // mimic the escaping process that occurs in OutputPage::setPageTitle
 411                 $text = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $text, $htmlTagsCallback, array(), array(), $bad ) );
 412                 $title = Title::newFromText( Sanitizer::stripAllTags( $text ) );
 413
 414                 if ( !$wgRestrictDisplayTitle ) {
 415                         $parser->mOutput->setDisplayTitle( $text );
 416                 } elseif ( $title instanceof Title && $title->getFragment() == '' && $title->equals( $parser->mTitle ) ) {
 417                         $parser->mOutput->setDisplayTitle( $text );
 418                 }
 419
 420                 return '';
 421         }
 422
 423         /**
 424          * Matches the given value against the value of given magic word
 425          *
 426          * @param string $magicword magic word key
 427          * @param mixed $value value to match
 428          * @return boolean true on successful match
 429          */
 430         private static function matchAgainstMagicword( $magicword, $value ) {
 431                 if ( strval( $value ) === '' ) {
 432                         return false;
 433                 }
 434                 $mwObject = MagicWord::get( $magicword );
 435                 return $mwObject->match( $value );
 436         }
 437
 438         static function formatRaw( $num, $raw ) {
 439                 if ( self::matchAgainstMagicword( 'rawsuffix', $raw ) ) {
 440                         return $num;
 441                 } else {
 442                         global $wgContLang;
 443                         return $wgContLang->formatNum( $num );
 444                 }
 445         }
 446         static function numberofpages( $parser, $raw = null ) {
 447                 return self::formatRaw( SiteStats::pages(), $raw );
 448         }
 449         static function numberofusers( $parser, $raw = null ) {
 450                 return self::formatRaw( SiteStats::users(), $raw );
 451         }
 452         static function numberofactiveusers( $parser, $raw = null ) {
 453                 return self::formatRaw( SiteStats::activeUsers(), $raw );
 454         }
 455         static function numberofarticles( $parser, $raw = null ) {
 456                 return self::formatRaw( SiteStats::articles(), $raw );
 457         }
 458         static function numberoffiles( $parser, $raw = null ) {
 459                 return self::formatRaw( SiteStats::images(), $raw );
 460         }
 461         static function numberofadmins( $parser, $raw = null ) {
 462                 return self::formatRaw( SiteStats::numberingroup( 'sysop' ), $raw );
 463         }
 464         static function numberofedits( $parser, $raw = null ) {
 465                 return self::formatRaw( SiteStats::edits(), $raw );
 466         }
 467         static function numberofviews( $parser, $raw = null ) {
 468                 global $wgDisableCounters;
 469                 return !$wgDisableCounters ? self::formatRaw( SiteStats::views(), $raw ) : '';
 470         }
 471         static function pagesinnamespace( $parser, $namespace = 0, $raw = null ) {
 472                 return self::formatRaw( SiteStats::pagesInNs( intval( $namespace ) ), $raw );
 473         }
 474         static function numberingroup( $parser, $name = '', $raw = null ) {
 475                 return self::formatRaw( SiteStats::numberingroup( strtolower( $name ) ), $raw );
 476         }
 477
 478         /**
 479          * Given a title, return the namespace name that would be given by the
 480          * corresponding magic word
 481          * Note: function name changed to "mwnamespace" rather than "namespace"
 482          * to not break PHP 5.3
 483          * @return mixed|string
 484          */
 485         static function mwnamespace( $parser, $title = null ) {
 486                 $t = Title::newFromText( $title );
 487                 if ( is_null( $t ) ) {
 488                         return '';
 489                 }
 490                 return str_replace( '_', ' ', $t->getNsText() );
 491         }
 492         static function namespacee( $parser, $title = null ) {
 493                 $t = Title::newFromText( $title );
 494                 if ( is_null( $t ) ) {
 495                         return '';
 496                 }
 497                 return wfUrlencode( $t->getNsText() );
 498         }
 499         static function namespacenumber( $parser, $title = null ) {
 500                 $t = Title::newFromText( $title );
 501                 if ( is_null( $t ) ) {
 502                         return '';
 503                 }
 504                 return $t->getNamespace();
 505         }
 506         static function talkspace( $parser, $title = null ) {
 507                 $t = Title::newFromText( $title );
 508                 if ( is_null( $t ) || !$t->canTalk() ) {
 509                         return '';
 510                 }
 511                 return str_replace( '_', ' ', $t->getTalkNsText() );
 512         }
 513         static function talkspacee( $parser, $title = null ) {
 514                 $t = Title::newFromText( $title );
 515                 if ( is_null( $t ) || !$t->canTalk() ) {
 516                         return '';
 517                 }
 518                 return wfUrlencode( $t->getTalkNsText() );
 519         }
 520         static function subjectspace( $parser, $title = null ) {
 521                 $t = Title::newFromText( $title );
 522                 if ( is_null( $t ) ) {
 523                         return '';
 524                 }
 525                 return str_replace( '_', ' ', $t->getSubjectNsText() );
 526         }
 527         static function subjectspacee( $parser, $title = null ) {
 528                 $t = Title::newFromText( $title );
 529                 if ( is_null( $t ) ) {
 530                         return '';
 531                 }
 532                 return wfUrlencode( $t->getSubjectNsText() );
 533         }
 534
 535         /**
 536          * Functions to get and normalize pagenames, corresponding to the magic words
 537          * of the same names
 538          * @return String
 539          */
 540         static function pagename( $parser, $title = null ) {
 541                 $t = Title::newFromText( $title );
 542                 if ( is_null( $t ) ) {
 543                         return '';
 544                 }
 545                 return wfEscapeWikiText( $t->getText() );
 546         }
 547         static function pagenamee( $parser, $title = null ) {
 548                 $t = Title::newFromText( $title );
 549                 if ( is_null( $t ) ) {
 550                         return '';
 551                 }
 552                 return wfEscapeWikiText( $t->getPartialURL() );
 553         }
 554         static function fullpagename( $parser, $title = null ) {
 555                 $t = Title::newFromText( $title );
 556                 if ( is_null( $t ) || !$t->canTalk() ) {
 557                         return '';
 558                 }
 559                 return wfEscapeWikiText( $t->getPrefixedText() );
 560         }
 561         static function fullpagenamee( $parser, $title = null ) {
 562                 $t = Title::newFromText( $title );
 563                 if ( is_null( $t ) || !$t->canTalk() ) {
 564                         return '';
 565                 }
 566                 return wfEscapeWikiText( $t->getPrefixedURL() );
 567         }
 568         static function subpagename( $parser, $title = null ) {
 569                 $t = Title::newFromText( $title );
 570                 if ( is_null( $t ) ) {
 571                         return '';
 572                 }
 573                 return wfEscapeWikiText( $t->getSubpageText() );
 574         }
 575         static function subpagenamee( $parser, $title = null ) {
 576                 $t = Title::newFromText( $title );
 577                 if ( is_null( $t ) ) {
 578                         return '';
 579                 }
 580                 return wfEscapeWikiText( $t->getSubpageUrlForm() );
 581         }
 582         static function rootpagename( $parser, $title = null ) {
 583                 $t = Title::newFromText( $title );
 584                 if ( is_null( $t ) ) {
 585                         return '';
 586                 }
 587                 return wfEscapeWikiText( $t->getRootText() );
 588         }
 589         static function rootpagenamee( $parser, $title = null ) {
 590                 $t = Title::newFromText( $title );
 591                 if ( is_null( $t ) ) {
 592                         return '';
 593                 }
 594                 return wfEscapeWikiText( wfUrlEncode( str_replace( ' ', '_', $t->getRootText() ) ) );
 595         }
 596         static function basepagename( $parser, $title = null ) {
 597                 $t = Title::newFromText( $title );
 598                 if ( is_null( $t ) ) {
 599                         return '';
 600                 }
 601                 return wfEscapeWikiText( $t->getBaseText() );
 602         }
 603         static function basepagenamee( $parser, $title = null ) {
 604                 $t = Title::newFromText( $title );
 605                 if ( is_null( $t ) ) {
 606                         return '';
 607                 }
 608                 return wfEscapeWikiText( wfUrlEncode( str_replace( ' ', '_', $t->getBaseText() ) ) );
 609         }
 610         static function talkpagename( $parser, $title = null ) {
 611                 $t = Title::newFromText( $title );
 612                 if ( is_null( $t ) || !$t->canTalk() ) {
 613                         return '';
 614                 }
 615                 return wfEscapeWikiText( $t->getTalkPage()->getPrefixedText() );
 616         }
 617         static function talkpagenamee( $parser, $title = null ) {
 618                 $t = Title::newFromText( $title );
 619                 if ( is_null( $t ) || !$t->canTalk() ) {
 620                         return '';
 621                 }
 622                 return wfEscapeWikiText( $t->getTalkPage()->getPrefixedURL() );
 623         }
 624         static function subjectpagename( $parser, $title = null ) {
 625                 $t = Title::newFromText( $title );
 626                 if ( is_null( $t ) ) {
 627                         return '';
 628                 }
 629                 return wfEscapeWikiText( $t->getSubjectPage()->getPrefixedText() );
 630         }
 631         static function subjectpagenamee( $parser, $title = null ) {
 632                 $t = Title::newFromText( $title );
 633                 if ( is_null( $t ) ) {
 634                         return '';
 635                 }
 636                 return wfEscapeWikiText( $t->getSubjectPage()->getPrefixedURL() );
 637         }
 638
 639         /**
 640          * Return the number of pages, files or subcats in the given category,
 641          * or 0 if it's nonexistent. This is an expensive parser function and
 642          * can't be called too many times per page.
 643          * @return string
 644          */
 645         static function pagesincategory( $parser, $name = '', $arg1 = null, $arg2 = null ) {
 646                 global $wgContLang;
 647                 static $magicWords = null;
 648                 if ( is_null( $magicWords ) ) {
 649                         $magicWords = new MagicWordArray( array(
 650                                 'pagesincategory_all',
 651                                 'pagesincategory_pages',
 652                                 'pagesincategory_subcats',
 653                                 'pagesincategory_files'
 654                         ) );
 655                 }
 656                 static $cache = array();
 657
 658                 // split the given option to its variable
 659                 if ( self::matchAgainstMagicword( 'rawsuffix', $arg1 ) ) {
 660                         //{{pagesincategory:|raw[|type]}}
 661                         $raw = $arg1;
 662                         $type = $magicWords->matchStartToEnd( $arg2 );
 663                 } else {
 664                         //{{pagesincategory:[|type[|raw]]}}
 665                         $type = $magicWords->matchStartToEnd( $arg1 );
 666                         $raw = $arg2;
 667                 }
 668                 if ( !$type ) { //backward compatibility
 669                         $type = 'pagesincategory_all';
 670                 }
 671
 672                 $title = Title::makeTitleSafe( NS_CATEGORY, $name );
 673                 if ( !$title ) { # invalid title
 674                         return self::formatRaw( 0, $raw );
 675                 }
 676                 $wgContLang->findVariantLink( $name, $title, true );
 677
 678                 // Normalize name for cache
 679                 $name = $title->getDBkey();
 680
 681                 if ( !isset( $cache[$name] ) ) {
 682                         $category = Category::newFromTitle( $title );
 683
 684                         $allCount = $subcatCount = $fileCount = $pagesCount = 0;
 685                         if ( $parser->incrementExpensiveFunctionCount() ) {
 686                                 // $allCount is the total number of cat members,
 687                                 // not the count of how many members are normal pages.
 688                                 $allCount = (int)$category->getPageCount();
 689                                 $subcatCount = (int)$category->getSubcatCount();
 690                                 $fileCount = (int)$category->getFileCount();
 691                                 $pagesCount = $allCount - $subcatCount - $fileCount;
 692                         }
 693                         $cache[$name]['pagesincategory_all'] = $allCount;
 694                         $cache[$name]['pagesincategory_pages'] = $pagesCount;
 695                         $cache[$name]['pagesincategory_subcats'] = $subcatCount;
 696                         $cache[$name]['pagesincategory_files'] = $fileCount;
 697                 }
 698
 699                 $count = $cache[$name][$type];
 700                 return self::formatRaw( $count, $raw );
 701         }
 702
 703         /**
 704          * Return the size of the given page, or 0 if it's nonexistent.  This is an
 705          * expensive parser function and can't be called too many times per page.
 706          *
 707          * @todo FIXME: Title::getLength() documentation claims that it adds things
 708          *   to the link cache, so the local cache here should be unnecessary, but
 709          *   in fact calling getLength() repeatedly for the same $page does seem to
 710          *   run one query for each call?
 711          * @todo Document parameters
 712          *
 713          * @param $parser Parser
 714          * @param $page String Name of page to check (Default: empty string)
 715          * @param $raw String Should number be human readable with commas or just number
 716          * @return string
 717          */
 718         static function pagesize( $parser, $page = '', $raw = null ) {
 719                 $title = Title::newFromText( $page );
 720
 721                 if ( !is_object( $title ) ) {
 722                         return self::formatRaw( 0, $raw );
 723                 }
 724
 725                 // fetch revision from cache/database and return the value
 726                 $rev = self::getCachedRevisionObject( $parser, $title );
 727                 $length = $rev ? $rev->getSize() : 0;
 728                 return self::formatRaw( $length, $raw );
 729         }
 730
 731         /**
 732          * Returns the requested protection level for the current page
 733          *
 734          * @param Parser $parser
 735          * @param string $type
 736          * @param string $title
 737          *
 738          * @return string
 739          */
 740         static function protectionlevel( $parser, $type = '', $title = '' ) {
 741                 $titleObject = Title::newFromText( $title );
 742                 if ( !( $titleObject instanceof Title ) ) {
 743                         $titleObject = $parser->mTitle;
 744                 }
 745                 $restrictions = $titleObject->getRestrictions( strtolower( $type ) );
 746                 # Title::getRestrictions returns an array, its possible it may have
 747                 # multiple values in the future
 748                 return implode( $restrictions, ',' );
 749         }
 750
 751         /**
 752          * Gives language names.
 753          * @param $parser Parser
 754          * @param string $code  Language code (of which to get name)
 755          * @param string $inLanguage  Language code (in which to get name)
 756          * @return String
 757          */
 758         static function language( $parser, $code = '', $inLanguage = '' ) {
 759                 $code = strtolower( $code );
 760                 $inLanguage = strtolower( $inLanguage );
 761                 $lang = Language::fetchLanguageName( $code, $inLanguage );
 762                 return $lang !== '' ? $lang : wfBCP47( $code );
 763         }
 764
 765         /**
 766          * Unicode-safe str_pad with the restriction that $length is forced to be <= 500
 767          * @return string
 768          */
 769         static function pad( $parser, $string, $length, $padding = '0', $direction = STR_PAD_RIGHT ) {
 770                 $padding = $parser->killMarkers( $padding );
 771                 $lengthOfPadding = mb_strlen( $padding );
 772                 if ( $lengthOfPadding == 0 ) {
 773                         return $string;
 774                 }
 775
 776                 # The remaining length to add counts down to 0 as padding is added
 777                 $length = min( $length, 500 ) - mb_strlen( $string );
 778                 # $finalPadding is just $padding repeated enough times so that
 779                 # mb_strlen( $string ) + mb_strlen( $finalPadding ) == $length
 780                 $finalPadding = '';
 781                 while ( $length > 0 ) {
 782                         # If $length < $lengthofPadding, truncate $padding so we get the
 783                         # exact length desired.
 784                         $finalPadding .= mb_substr( $padding, 0, $length );
 785                         $length -= $lengthOfPadding;
 786                 }
 787
 788                 if ( $direction == STR_PAD_LEFT ) {
 789                         return $finalPadding . $string;
 790                 } else {
 791                         return $string . $finalPadding;
 792                 }
 793         }
 794
 795         static function padleft( $parser, $string = '', $length = 0, $padding = '0' ) {
 796                 return self::pad( $parser, $string, $length, $padding, STR_PAD_LEFT );
 797         }
 798
 799         static function padright( $parser, $string = '', $length = 0, $padding = '0' ) {
 800                 return self::pad( $parser, $string, $length, $padding );
 801         }
 802
 803         /**
 804          * @param $parser Parser
 805          * @param  $text
 806          * @return string
 807          */
 808         static function anchorencode( $parser, $text ) {
 809                 $text = $parser->killMarkers( $text );
 810                 return (string)substr( $parser->guessSectionNameFromWikiText( $text ), 1 );
 811         }
 812
 813         static function special( $parser, $text ) {
 814                 list( $page, $subpage ) = SpecialPageFactory::resolveAlias( $text );
 815                 if ( $page ) {
 816                         $title = SpecialPage::getTitleFor( $page, $subpage );
 817                         return $title->getPrefixedText();
 818                 } else {
 819                         // unknown special page, just use the given text as its title, if at all possible
 820                         $title = Title::makeTitleSafe( NS_SPECIAL, $text );
 821                         return $title ? $title->getPrefixedText() : self::special( $parser, 'Badtitle' );
 822                 }
 823         }
 824
 825         static function speciale( $parser, $text ) {
 826                 return wfUrlencode( str_replace( ' ', '_', self::special( $parser, $text ) ) );
 827         }
 828
 829         /**
 830          * @param $parser Parser
 831          * @param string $text The sortkey to use
 832          * @param string $uarg Either "noreplace" or "noerror" (in en)
 833          *   both suppress errors, and noreplace does nothing if
 834          *   a default sortkey already exists.
 835          * @return string
 836          */
 837         public static function defaultsort( $parser, $text, $uarg = '' ) {
 838                 static $magicWords = null;
 839                 if ( is_null( $magicWords ) ) {
 840                         $magicWords = new MagicWordArray( array( 'defaultsort_noerror', 'defaultsort_noreplace' ) );
 841                 }
 842                 $arg = $magicWords->matchStartToEnd( $uarg );
 843
 844                 $text = trim( $text );
 845                 if ( strlen( $text ) == 0 ) {
 846                         return '';
 847                 }
 848                 $old = $parser->getCustomDefaultSort();
 849                 if ( $old === false || $arg !== 'defaultsort_noreplace' ) {
 850                         $parser->setDefaultSort( $text );
 851                 }
 852
 853                 if ( $old === false || $old == $text || $arg ) {
 854                         return '';
 855                 } else {
 856                         $converter = $parser->getConverterLanguage()->getConverter();
 857                         return '<span class="error">' .
 858                                 wfMessage( 'duplicate-defaultsort',
 859                                         // Message should be parsed, but these params should only be escaped.
 860                                         $converter->markNoConversion( wfEscapeWikiText( $old ) ),
 861                                         $converter->markNoConversion( wfEscapeWikiText( $text ) )
 862                                 )->inContentLanguage()->text() .
 863                                 '</span>';
 864                 }
 865         }
 866
 867         // Usage {{filepath|300}}, {{filepath|nowiki}}, {{filepath|nowiki|300}} or {{filepath|300|nowiki}}
 868         // or {{filepath|300px}}, {{filepath|200x300px}}, {{filepath|nowiki|200x300px}}, {{filepath|200x300px|nowiki}}
 869         public static function filepath( $parser, $name = '', $argA = '', $argB = '' ) {
 870                 $file = wfFindFile( $name );
 871
 872                 if ( $argA == 'nowiki' ) {
 873                         // {{filepath: | option [| size] }}
 874                         $isNowiki = true;
 875                         $parsedWidthParam = $parser->parseWidthParam( $argB );
 876                 } else {
 877                         // {{filepath: [| size [|option]] }}
 878                         $parsedWidthParam = $parser->parseWidthParam( $argA );
 879                         $isNowiki = ( $argB == 'nowiki' );
 880                 }
 881
 882                 if ( $file ) {
 883                         $url = $file->getFullUrl();
 884
 885                         // If a size is requested...
 886                         if ( count( $parsedWidthParam ) ) {
 887                                 $mto = $file->transform( $parsedWidthParam );
 888                                 // ... and we can
 889                                 if ( $mto && !$mto->isError() ) {
 890                                         // ... change the URL to point to a thumbnail.
 891                                         $url = wfExpandUrl( $mto->getUrl(), PROTO_RELATIVE );
 892                                 }
 893                         }
 894                         if ( $isNowiki ) {
 895                                 return array( $url, 'nowiki' => true );
 896                         }
 897                         return $url;
 898                 } else {
 899                         return '';
 900                 }
 901         }
 902
 903         /**
 904          * Parser function to extension tag adaptor
 905          * @return string
 906          */
 907         public static function tagObj( $parser, $frame, $args ) {
 908                 if ( !count( $args ) ) {
 909                         return '';
 910                 }
 911                 $tagName = strtolower( trim( $frame->expand( array_shift( $args ) ) ) );
 912
 913                 if ( count( $args ) ) {
 914                         $inner = $frame->expand( array_shift( $args ) );
 915                 } else {
 916                         $inner = null;
 917                 }
 918
 919                 $stripList = $parser->getStripList();
 920                 if ( !in_array( $tagName, $stripList ) ) {
 921                         return '<span class="error">' .
 922                                 wfMessage( 'unknown_extension_tag', $tagName )->inContentLanguage()->text() .
 923                                 '</span>';
 924                 }
 925
 926                 $attributes = array();
 927                 foreach ( $args as $arg ) {
 928                         $bits = $arg->splitArg();
 929                         if ( strval( $bits['index'] ) === '' ) {
 930                                 $name = trim( $frame->expand( $bits['name'], PPFrame::STRIP_COMMENTS ) );
 931                                 $value = trim( $frame->expand( $bits['value'] ) );
 932                                 if ( preg_match( '/^(?:["\'](.+)["\']|""|\'\')$/s', $value, $m ) ) {
 933                                         $value = isset( $m[1] ) ? $m[1] : '';
 934                                 }
 935                                 $attributes[$name] = $value;
 936                         }
 937                 }
 938
 939                 $params = array(
 940                         'name' => $tagName,
 941                         'inner' => $inner,
 942                         'attributes' => $attributes,
 943                         'close' => "</$tagName>",
 944                 );
 945                 return $parser->extensionSubstitution( $params, $frame );
 946         }
 947
 948         /**
 949          * Fetched the current revision of the given title and return this.
 950          * Will increment the expensive function count and
 951          * add a template link to get the value refreshed on changes.
 952          * For a given title, which is equal to the current parser title,
 953          * the revision object from the parser is used, when that is the current one
 954          *
 955          * @param $parser Parser
 956          * @param $title Title
 957          * @return Revision
 958          * @since 1.23
 959          */
 960         private static function getCachedRevisionObject( $parser, $title = null ) {
 961                 static $cache = array();
 962
 963                 if ( is_null( $title ) ) {
 964                         return null;
 965                 }
 966
 967                 // Use the revision from the parser itself, when param is the current page
 968                 // and the revision is the current one
 969                 if ( $title->equals( $parser->getTitle() ) ) {
 970                         $parserRev = $parser->getRevisionObject();
 971                         if ( $parserRev && $parserRev->isCurrent() ) {
 972                                 // force reparse after edit with vary-revision flag
 973                                 $parser->getOutput()->setFlag( 'vary-revision' );
 974                                 wfDebug( __METHOD__ . ": use current revision from parser, setting vary-revision...\n" );
 975                                 return $parserRev;
 976                         }
 977                 }
 978
 979                 // Normalize name for cache
 980                 $page = $title->getPrefixedDBkey();
 981
 982                 if ( array_key_exists( $page, $cache ) ) { // cache contains null values
 983                         return $cache[$page];
 984                 }
 985                 if ( $parser->incrementExpensiveFunctionCount() ) {
 986                         $rev = Revision::newFromTitle( $title, false, Revision::READ_NORMAL );
 987                         $pageID = $rev ? $rev->getPage() : 0;
 988                         $revID = $rev ? $rev->getId() : 0;
 989                         $cache[$page] = $rev; // maybe null
 990
 991                         // Register dependency in templatelinks
 992                         $parser->getOutput()->addTemplate( $title, $pageID, $revID );
 993
 994                         return $rev;
 995                 }
 996                 $cache[$page] = null;
 997                 return null;
 998         }
 999
1000         /**
1001          * Get the pageid of a specified page
1002          * @param $parser Parser
1003          * @param $title string Title to get the pageid from
1004          * @since 1.23
1005          */
1006         public static function pageid( $parser, $title = null ) {
1007                 $t = Title::newFromText( $title );
1008                 if ( is_null( $t ) ) {
1009                         return '';
1010                 }
1011                 // Use title from parser to have correct pageid after edit
1012                 if ( $t->equals( $parser->getTitle() ) ) {
1013                         $t = $parser->getTitle();
1014                 }
1015                 // fetch pageid from cache/database and return the value
1016                 $pageid = $t->getArticleID();
1017                 return $pageid ? $pageid : '';
1018         }
1019
1020         /**
1021          * Get the id from the last revision of a specified page.
1022          * @param $parser Parser
1023          * @param $title string Title to get the id from
1024          * @since 1.23
1025          */
1026         public static function revisionid( $parser, $title = null ) {
1027                 $t = Title::newFromText( $title );
1028                 if ( is_null( $t ) ) {
1029                         return '';
1030                 }
1031                 // fetch revision from cache/database and return the value
1032                 $rev = self::getCachedRevisionObject( $parser, $t );
1033                 return $rev ? $rev->getId() : '';
1034         }
1035
1036         /**
1037          * Get the day from the last revision of a specified page.
1038          * @param $parser Parser
1039          * @param $title string Title to get the day from
1040          * @since 1.23
1041          */
1042         public static function revisionday( $parser, $title = null ) {
1043                 $t = Title::newFromText( $title );
1044                 if ( is_null( $t ) ) {
1045                         return '';
1046                 }
1047                 // fetch revision from cache/database and return the value
1048                 $rev = self::getCachedRevisionObject( $parser, $t );
1049                 return $rev ? MWTimestamp::getLocalInstance( $rev->getTimestamp() )->format( 'j' ) : '';
1050         }
1051
1052         /**
1053          * Get the day with leading zeros from the last revision of a specified page.
1054          * @param $parser Parser
1055          * @param $title string Title to get the day from
1056          * @since 1.23
1057          */
1058         public static function revisionday2( $parser, $title = null ) {
1059                 $t = Title::newFromText( $title );
1060                 if ( is_null( $t ) ) {
1061                         return '';
1062                 }
1063                 // fetch revision from cache/database and return the value
1064                 $rev = self::getCachedRevisionObject( $parser, $t );
1065                 return $rev ? MWTimestamp::getLocalInstance( $rev->getTimestamp() )->format( 'd' ) : '';
1066         }
1067
1068         /**
1069          * Get the month with leading zeros from the last revision of a specified page.
1070          * @param $parser Parser
1071          * @param $title string Title to get the month from
1072          * @since 1.23
1073          */
1074         public static function revisionmonth( $parser, $title = null ) {
1075                 $t = Title::newFromText( $title );
1076                 if ( is_null( $t ) ) {
1077                         return '';
1078                 }
1079                 // fetch revision from cache/database and return the value
1080                 $rev = self::getCachedRevisionObject( $parser, $t );
1081                 return $rev ? MWTimestamp::getLocalInstance( $rev->getTimestamp() )->format( 'm' ) : '';
1082         }
1083
1084         /**
1085          * Get the month from the last revision of a specified page.
1086          * @param $parser Parser
1087          * @param $title string Title to get the month from
1088          * @since 1.23
1089          */
1090         public static function revisionmonth1( $parser, $title = null ) {
1091                 $t = Title::newFromText( $title );
1092                 if ( is_null( $t ) ) {
1093                         return '';
1094                 }
1095                 // fetch revision from cache/database and return the value
1096                 $rev = self::getCachedRevisionObject( $parser, $t );
1097                 return $rev ? MWTimestamp::getLocalInstance( $rev->getTimestamp() )->format( 'n' ) : '';
1098         }
1099
1100         /**
1101          * Get the year from the last revision of a specified page.
1102          * @param $parser Parser
1103          * @param $title string Title to get the year from
1104          * @since 1.23
1105          */
1106         public static function revisionyear( $parser, $title = null ) {
1107                 $t = Title::newFromText( $title );
1108                 if ( is_null( $t ) ) {
1109                         return '';
1110                 }
1111                 // fetch revision from cache/database and return the value
1112                 $rev = self::getCachedRevisionObject( $parser, $t );
1113                 return $rev ? MWTimestamp::getLocalInstance( $rev->getTimestamp() )->format( 'Y' ) : '';
1114         }
1115
1116         /**
1117          * Get the timestamp from the last revision of a specified page.
1118          * @param $parser Parser
1119          * @param $title string Title to get the timestamp from
1120          * @since 1.23
1121          */
1122         public static function revisiontimestamp( $parser, $title = null ) {
1123                 $t = Title::newFromText( $title );
1124                 if ( is_null( $t ) ) {
1125                         return '';
1126                 }
1127                 // fetch revision from cache/database and return the value
1128                 $rev = self::getCachedRevisionObject( $parser, $t );
1129                 return $rev ? MWTimestamp::getLocalInstance( $rev->getTimestamp() )->format( 'YmdHis' ) : '';
1130         }
1131
1132         /**
1133          * Get the user from the last revision of a specified page.
1134          * @param $parser Parser
1135          * @param $title string Title to get the user from
1136          * @since 1.23
1137          */
1138         public static function revisionuser( $parser, $title = null ) {
1139                 $t = Title::newFromText( $title );
1140                 if ( is_null( $t ) ) {
1141                         return '';
1142                 }
1143                 // fetch revision from cache/database and return the value
1144                 $rev = self::getCachedRevisionObject( $parser, $t );
1145                 return $rev ? $rev->getUserText() : '';
1146         }
1147 }