-style tags. This should not be anything we # may want to use in wikisyntax define( 'STRIP_COMMENTS', 'HTMLCommentStrip' ); # Constants needed for external link processing define( 'HTTP_PROTOCOLS', 'http:\/\/|https:\/\/' ); # Everything except bracket, space, or control characters define( 'EXT_LINK_URL_CLASS', '[^][<>"\\x00-\\x20\\x7F]' ); # Including space, but excluding newlines define( 'EXT_LINK_TEXT_CLASS', '[^\]\\x0a\\x0d]' ); define( 'EXT_IMAGE_FNAME_CLASS', '[A-Za-z0-9_.,~%\\-+&;#*?!=()@\\x80-\\xFF]' ); define( 'EXT_IMAGE_EXTENSIONS', 'gif|png|jpg|jpeg' ); define( 'EXT_LINK_BRACKETED', '/\[(\b(' . wfUrlProtocols() . ')'. EXT_LINK_URL_CLASS.'+) *('.EXT_LINK_TEXT_CLASS.'*?)\]/S' ); define( 'EXT_IMAGE_REGEX', '/^('.HTTP_PROTOCOLS.')'. # Protocol '('.EXT_LINK_URL_CLASS.'+)\\/'. # Hostname and path '('.EXT_IMAGE_FNAME_CLASS.'+)\\.((?i)'.EXT_IMAGE_EXTENSIONS.')$/S' # Filename ); // State constants for the definition list colon extraction define( 'MW_COLON_STATE_TEXT', 0 ); define( 'MW_COLON_STATE_TAG', 1 ); define( 'MW_COLON_STATE_TAGSTART', 2 ); define( 'MW_COLON_STATE_CLOSETAG', 3 ); define( 'MW_COLON_STATE_TAGSLASH', 4 ); define( 'MW_COLON_STATE_COMMENT', 5 ); define( 'MW_COLON_STATE_COMMENTDASH', 6 ); define( 'MW_COLON_STATE_COMMENTDASHDASH', 7 ); /** * PHP Parser * * Processes wiki markup * *
 * There are three main entry points into the Parser class:
 * parse()
 *   produces HTML output
 * preSaveTransform().
 *   produces altered wiki markup.
 * transformMsg()
 *   performs brace substitution on MediaWiki messages
 *
 * Globals used:
 *    objects:   $wgLang, $wgContLang
 *
 * NOT $wgArticle, $wgUser or $wgTitle. Keep them away!
 *
 * settings:
 *  $wgUseTex*, $wgUseDynamicDates*, $wgInterwikiMagic*,
 *  $wgNamespacesWithSubpages, $wgAllowExternalImages*,
 *  $wgLocaltimezone, $wgAllowSpecialInclusion*
 *
 *  * only within ParserOptions
 * 
* * @package MediaWiki */ class Parser { /**#@+ * @private */ # Persistent: var $mTagHooks, $mFunctionHooks, $mFunctionSynonyms, $mVariables; # Cleared with clearState(): var $mOutput, $mAutonumber, $mDTopen, $mStripState = array(); var $mIncludeCount, $mArgStack, $mLastSection, $mInPre; var $mInterwikiLinkHolders, $mLinkHolders, $mUniqPrefix; var $mTemplates, // cache of already loaded templates, avoids // multiple SQL queries for the same string $mTemplatePath; // stores an unsorted hash of all the templates already loaded // in this path. Used for loop detection. # Temporary # These are variables reset at least once per parse regardless of $clearState var $mOptions, // ParserOptions object $mTitle, // Title context, used for self-link rendering and similar things $mOutputType, // Output type, one of the OT_xxx constants $mRevisionId; // ID to display in {{REVISIONID}} tags /**#@-*/ /** * Constructor * * @public */ function Parser() { $this->mTagHooks = array(); $this->mFunctionHooks = array(); $this->mFunctionSynonyms = array( 0 => array(), 1 => array() ); $this->mFirstCall = true; } /** * Do various kinds of initialisation on the first call of the parser */ function firstCallInit() { if ( !$this->mFirstCall ) { return; } wfProfileIn( __METHOD__ ); global $wgAllowDisplayTitle, $wgAllowSlowParserFunctions; $this->setHook( 'pre', array( $this, 'renderPreTag' ) ); $this->setFunctionHook( MAG_NS, array( 'CoreParserFunctions', 'ns' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_URLENCODE, array( 'CoreParserFunctions', 'urlencode' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_LCFIRST, array( 'CoreParserFunctions', 'lcfirst' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_UCFIRST, array( 'CoreParserFunctions', 'ucfirst' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_LC, array( 'CoreParserFunctions', 'lc' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_UC, array( 'CoreParserFunctions', 'uc' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_LOCALURL, array( 'CoreParserFunctions', 'localurl' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_LOCALURLE, array( 'CoreParserFunctions', 'localurle' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_FULLURL, array( 'CoreParserFunctions', 'fullurl' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_FULLURLE, array( 'CoreParserFunctions', 'fullurle' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_FORMATNUM, array( 'CoreParserFunctions', 'formatnum' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_GRAMMAR, array( 'CoreParserFunctions', 'grammar' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_PLURAL, array( 'CoreParserFunctions', 'plural' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_NUMBEROFPAGES, array( 'CoreParserFunctions', 'numberofpages' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_NUMBEROFUSERS, array( 'CoreParserFunctions', 'numberofusers' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_NUMBEROFARTICLES, array( 'CoreParserFunctions', 'numberofarticles' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_NUMBEROFFILES, array( 'CoreParserFunctions', 'numberoffiles' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_NUMBEROFADMINS, array( 'CoreParserFunctions', 'numberofadmins' ), SFH_NO_HASH ); $this->setFunctionHook( MAG_LANGUAGE, array( 'CoreParserFunctions', 'language' ), SFH_NO_HASH ); if ( $wgAllowDisplayTitle ) { $this->setFunctionHook( MAG_DISPLAYTITLE, array( 'CoreParserFunctions', 'displaytitle' ), SFH_NO_HASH ); } if ( $wgAllowSlowParserFunctions ) { $this->setFunctionHook( MAG_PAGESINNAMESPACE, array( 'CoreParserFunctions', 'pagesinnamespace' ), SFH_NO_HASH ); } $this->initialiseVariables(); $this->mFirstCall = false; wfProfileOut( __METHOD__ ); } /** * Clear Parser state * * @private */ function clearState() { if ( $this->mFirstCall ) { $this->firstCallInit(); } $this->mOutput = new ParserOutput; $this->mAutonumber = 0; $this->mLastSection = ''; $this->mDTopen = false; $this->mIncludeCount = array(); $this->mStripState = array(); $this->mArgStack = array(); $this->mInPre = false; $this->mInterwikiLinkHolders = array( 'texts' => array(), 'titles' => array() ); $this->mLinkHolders = array( 'namespaces' => array(), 'dbkeys' => array(), 'queries' => array(), 'texts' => array(), 'titles' => array() ); $this->mRevisionId = null; /** * Prefix for temporary replacement strings for the multipass parser. * \x07 should never appear in input as it's disallowed in XML. * Using it at the front also gives us a little extra robustness * since it shouldn't match when butted up against identifier-like * string constructs. */ $this->mUniqPrefix = "\x07UNIQ" . Parser::getRandomString(); # Clear these on every parse, bug 4549 $this->mTemplates = array(); $this->mTemplatePath = array(); $this->mShowToc = true; $this->mForceTocPosition = false; wfRunHooks( 'ParserClearState', array( &$this ) ); } /** * Accessor for mUniqPrefix. * * @public */ function UniqPrefix() { return $this->mUniqPrefix; } /** * Convert wikitext to HTML * Do not call this function recursively. * * @private * @param string $text Text we want to parse * @param Title &$title A title object * @param array $options * @param boolean $linestart * @param boolean $clearState * @param int $revid number to pass in {{REVISIONID}} * @return ParserOutput a ParserOutput */ function parse( $text, &$title, $options, $linestart = true, $clearState = true, $revid = null ) { /** * First pass--just handle sections, pass the rest off * to internalParse() which does all the real work. */ global $wgUseTidy, $wgAlwaysUseTidy, $wgContLang; $fname = 'Parser::parse'; wfProfileIn( $fname ); if ( $clearState ) { $this->clearState(); } $this->mOptions = $options; $this->mTitle =& $title; $this->mRevisionId = $revid; $this->mOutputType = OT_HTML; //$text = $this->strip( $text, $this->mStripState ); // VOODOO MAGIC FIX! Sometimes the above segfaults in PHP5. $x =& $this->mStripState; wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$x ) ); $text = $this->strip( $text, $x ); wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$x ) ); # Hook to suspend the parser in this state if ( !wfRunHooks( 'ParserBeforeInternalParse', array( &$this, &$text, &$x ) ) ) { wfProfileOut( $fname ); return $text ; } $text = $this->internalParse( $text ); $text = $this->unstrip( $text, $this->mStripState ); # Clean up special characters, only run once, next-to-last before doBlockLevels $fixtags = array( # french spaces, last one Guillemet-left # only if there is something before the space '/(.) (?=\\?|:|;|!|\\302\\273)/' => '\\1 \\2', # french spaces, Guillemet-right '/(\\302\\253) /' => '\\1 ', ); $text = preg_replace( array_keys($fixtags), array_values($fixtags), $text ); # only once and last $text = $this->doBlockLevels( $text, $linestart ); $this->replaceLinkHolders( $text ); # the position of the parserConvert() call should not be changed. it # assumes that the links are all replaced and the only thing left # is the mark. # Side-effects: this calls $this->mOutput->setTitleText() $text = $wgContLang->parserConvert( $text, $this ); $text = $this->unstripNoWiki( $text, $this->mStripState ); wfRunHooks( 'ParserBeforeTidy', array( &$this, &$text ) ); $text = Sanitizer::normalizeCharReferences( $text ); if (($wgUseTidy and $this->mOptions->mTidy) or $wgAlwaysUseTidy) { $text = Parser::tidy($text); } else { # attempt to sanitize at least some nesting problems # (bug #2702 and quite a few others) $tidyregs = array( # ''Something [http://www.cool.com cool''] --> # Somethingcool> '/(<([bi])>)(<([bi])>)?([^<]*)(<\/?a[^<]*>)([^<]*)(<\/\\4>)?(<\/\\2>)/' => '\\1\\3\\5\\8\\9\\6\\1\\3\\7\\8\\9', # fix up an anchor inside another anchor, only # at least for a single single nested link (bug 3695) '/(]+>)([^<]*)(]+>[^<]*)<\/a>(.*)<\/a>/' => '\\1\\2\\3\\1\\4', # fix div inside inline elements- doBlockLevels won't wrap a line which # contains a div, so fix it up here; replace # div with escaped text '/(<([aib]) [^>]+>)([^<]*)(]*)>)(.*)(<\/div>)([^<]*)(<\/\\2>)/' => '\\1\\3<div\\5>\\6</div>\\8\\9', # remove empty italic or bold tag pairs, some # introduced by rules above '/<([bi])><\/\\1>/' => '' ); $text = preg_replace( array_keys( $tidyregs ), array_values( $tidyregs ), $text ); } wfRunHooks( 'ParserAfterTidy', array( &$this, &$text ) ); $this->mOutput->setText( $text ); wfProfileOut( $fname ); return $this->mOutput; } /** * Get a random string * * @private * @static */ function getRandomString() { return dechex(mt_rand(0, 0x7fffffff)) . dechex(mt_rand(0, 0x7fffffff)); } function &getTitle() { return $this->mTitle; } function getOptions() { return $this->mOptions; } function getFunctionLang() { global $wgLang, $wgContLang; return $this->mOptions->getInterfaceMessage() ? $wgLang : $wgContLang; } /** * Replaces all occurrences of HTML-style comments and the given tags * in the text with a random marker and returns teh next text. The output * parameter $matches will be an associative array filled with data in * the form: * 'UNIQ-xxxxx' => array( * 'element', * 'tag content', * array( 'param' => 'x' ), * 'tag content' ) ) * * @param $elements list of element names. Comments are always extracted. * @param $text Source text string. * @param $uniq_prefix * * @private * @static */ function extractTagsAndParams($elements, $text, &$matches, $uniq_prefix = ''){ $rand = Parser::getRandomString(); $n = 1; $stripped = ''; $matches = array(); $taglist = implode( '|', $elements ); $start = "/<($taglist)(\\s+[^>]*?|\\s*?)(\/?>)|<(!--)/i"; while ( '' != $text ) { $p = preg_split( $start, $text, 2, PREG_SPLIT_DELIM_CAPTURE ); $stripped .= $p[0]; if( count( $p ) < 5 ) { break; } if( count( $p ) > 5 ) { // comment $element = $p[4]; $attributes = ''; $close = ''; $inside = $p[5]; } else { // tag $element = $p[1]; $attributes = $p[2]; $close = $p[3]; $inside = $p[4]; } $marker = "$uniq_prefix-$element-$rand" . sprintf('%08X', $n++) . '-QINU'; $stripped .= $marker; if ( $close === '/>' ) { // Empty element tag, $content = null; $text = $inside; $tail = null; } else { if( $element == '!--' ) { $end = '/(-->)/'; } else { $end = "/(<\\/$element\\s*>)/i"; } $q = preg_split( $end, $inside, 2, PREG_SPLIT_DELIM_CAPTURE ); $content = $q[0]; if( count( $q ) < 3 ) { # No end tag -- let it run out to the end of the text. $tail = ''; $text = ''; } else { $tail = $q[1]; $text = $q[2]; } } $matches[$marker] = array( $element, $content, Sanitizer::decodeTagAttributes( $attributes ), "<$element$attributes$close$content$tail" ); } return $stripped; } /** * Strips and renders nowiki, pre, math, hiero * If $render is set, performs necessary rendering operations on plugins * Returns the text, and fills an array with data needed in unstrip() * If the $state is already a valid strip state, it adds to the state * * @param bool $stripcomments when set, HTML comments * will be stripped in addition to other tags. This is important * for section editing, where these comments cause confusion when * counting the sections in the wikisource * * @param array dontstrip contains tags which should not be stripped; * used to prevent stipping of when saving (fixes bug 2700) * * @private */ function strip( $text, &$state, $stripcomments = false , $dontstrip = array () ) { $render = ($this->mOutputType == OT_HTML); # Replace any instances of the placeholders $uniq_prefix = $this->mUniqPrefix; #$text = str_replace( $uniq_prefix, wfHtmlEscapeFirst( $uniq_prefix ), $text ); $commentState = array(); $elements = array_merge( array( 'nowiki', 'gallery' ), array_keys( $this->mTagHooks ) ); global $wgRawHtml; if( $wgRawHtml ) { $elements[] = 'html'; } if( $this->mOptions->getUseTeX() ) { $elements[] = 'math'; } # Removing $dontstrip tags from $elements list (currently only 'gallery', fixing bug 2700) foreach ( $elements AS $k => $v ) { if ( !in_array ( $v , $dontstrip ) ) continue; unset ( $elements[$k] ); } $matches = array(); $text = Parser::extractTagsAndParams( $elements, $text, $matches, $uniq_prefix ); foreach( $matches as $marker => $data ) { list( $element, $content, $params, $tag ) = $data; if( $render ) { $tagName = strtolower( $element ); switch( $tagName ) { case '!--': // Comment if( substr( $tag, -3 ) == '-->' ) { $output = $tag; } else { // Unclosed comment in input. // Close it so later stripping can remove it $output = "$tag-->"; } break; case 'html': if( $wgRawHtml ) { $output = $content; break; } // Shouldn't happen otherwise. :) case 'nowiki': $output = wfEscapeHTMLTagsOnly( $content ); break; case 'math': $output = MathRenderer::renderMath( $content ); break; case 'gallery': $output = $this->renderImageGallery( $content, $params ); break; default: if( isset( $this->mTagHooks[$tagName] ) ) { $output = call_user_func_array( $this->mTagHooks[$tagName], array( $content, $params, $this ) ); } else { throw new MWException( "Invalid call hook $element" ); } } } else { // Just stripping tags; keep the source $output = $tag; } if( !$stripcomments && $element == '!--' ) { $commentState[$marker] = $output; } else { $state[$element][$marker] = $output; } } # Unstrip comments unless explicitly told otherwise. # (The comments are always stripped prior to this point, so as to # not invoke any extension tags / parser hooks contained within # a comment.) if ( !$stripcomments ) { // Put them all back and forget them $text = strtr( $text, $commentState ); } return $text; } /** * Restores pre, math, and other extensions removed by strip() * * always call unstripNoWiki() after this one * @private */ function unstrip( $text, &$state ) { if ( !is_array( $state ) ) { return $text; } $replacements = array(); foreach( $state as $tag => $contentDict ) { if( $tag != 'nowiki' && $tag != 'html' ) { foreach( $contentDict as $uniq => $content ) { $replacements[$uniq] = $content; } } } $text = strtr( $text, $replacements ); return $text; } /** * Always call this after unstrip() to preserve the order * * @private */ function unstripNoWiki( $text, &$state ) { if ( !is_array( $state ) ) { return $text; } $replacements = array(); foreach( $state as $tag => $contentDict ) { if( $tag == 'nowiki' || $tag == 'html' ) { foreach( $contentDict as $uniq => $content ) { $replacements[$uniq] = $content; } } } $text = strtr( $text, $replacements ); return $text; } /** * Add an item to the strip state * Returns the unique tag which must be inserted into the stripped text * The tag will be replaced with the original text in unstrip() * * @private */ function insertStripItem( $text, &$state ) { $rnd = $this->mUniqPrefix . '-item' . Parser::getRandomString(); if ( !$state ) { $state = array(); } $state['item'][$rnd] = $text; return $rnd; } /** * Interface with html tidy, used if $wgUseTidy = true. * If tidy isn't able to correct the markup, the original will be * returned in all its glory with a warning comment appended. * * Either the external tidy program or the in-process tidy extension * will be used depending on availability. Override the default * $wgTidyInternal setting to disable the internal if it's not working. * * @param string $text Hideous HTML input * @return string Corrected HTML output * @public * @static */ function tidy( $text ) { global $wgTidyInternal; $wrappedtext = ''. 'test'.$text.''; if( $wgTidyInternal ) { $correctedtext = Parser::internalTidy( $wrappedtext ); } else { $correctedtext = Parser::externalTidy( $wrappedtext ); } if( is_null( $correctedtext ) ) { wfDebug( "Tidy error detected!\n" ); return $text . "\n\n"; } return $correctedtext; } /** * Spawn an external HTML tidy process and get corrected markup back from it. * * @private * @static */ function externalTidy( $text ) { global $wgTidyConf, $wgTidyBin, $wgTidyOpts; $fname = 'Parser::externalTidy'; wfProfileIn( $fname ); $cleansource = ''; $opts = ' -utf8'; $descriptorspec = array( 0 => array('pipe', 'r'), 1 => array('pipe', 'w'), 2 => array('file', '/dev/null', 'a') ); $pipes = array(); $process = proc_open("$wgTidyBin -config $wgTidyConf $wgTidyOpts$opts", $descriptorspec, $pipes); if (is_resource($process)) { // Theoretically, this style of communication could cause a deadlock // here. If the stdout buffer fills up, then writes to stdin could // block. This doesn't appear to happen with tidy, because tidy only // writes to stdout after it's finished reading from stdin. Search // for tidyParseStdin and tidySaveStdout in console/tidy.c fwrite($pipes[0], $text); fclose($pipes[0]); while (!feof($pipes[1])) { $cleansource .= fgets($pipes[1], 1024); } fclose($pipes[1]); proc_close($process); } wfProfileOut( $fname ); if( $cleansource == '' && $text != '') { // Some kind of error happened, so we couldn't get the corrected text. // Just give up; we'll use the source text and append a warning. return null; } else { return $cleansource; } } /** * Use the HTML tidy PECL extension to use the tidy library in-process, * saving the overhead of spawning a new process. Currently written to * the PHP 4.3.x version of the extension, may not work on PHP 5. * * 'pear install tidy' should be able to compile the extension module. * * @private * @static */ function internalTidy( $text ) { global $wgTidyConf; $fname = 'Parser::internalTidy'; wfProfileIn( $fname ); tidy_load_config( $wgTidyConf ); tidy_set_encoding( 'utf8' ); tidy_parse_string( $text ); tidy_clean_repair(); if( tidy_get_status() == 2 ) { // 2 is magic number for fatal error // http://www.php.net/manual/en/function.tidy-get-status.php $cleansource = null; } else { $cleansource = tidy_get_output(); } wfProfileOut( $fname ); return $cleansource; } /** * parse the wiki syntax used to render tables * * @private */ function doTableStuff ( $t ) { $fname = 'Parser::doTableStuff'; wfProfileIn( $fname ); $t = explode ( "\n" , $t ) ; $td = array () ; # Is currently a td tag open? $ltd = array () ; # Was it TD or TH? $tr = array () ; # Is currently a tr tag open? $ltr = array () ; # tr attributes $has_opened_tr = array(); # Did this table open a element? $indent_level = 0; # indent level of the table foreach ( $t AS $k => $x ) { $x = trim ( $x ) ; $fc = substr ( $x , 0 , 1 ) ; if ( preg_match( '/^(:*)\{\|(.*)$/', $x, $matches ) ) { $indent_level = strlen( $matches[1] ); $attributes = $this->unstripForHTML( $matches[2] ); $t[$k] = str_repeat( '
', $indent_level ) . '' ; array_push ( $td , false ) ; array_push ( $ltd , '' ) ; array_push ( $tr , false ) ; array_push ( $ltr , '' ) ; array_push ( $has_opened_tr, false ); } else if ( count ( $td ) == 0 ) { } # Don't do any of the following else if ( '|}' == substr ( $x , 0 , 2 ) ) { $z = "" . substr ( $x , 2); $l = array_pop ( $ltd ) ; if ( !array_pop ( $has_opened_tr ) ) $z = "" . $z ; if ( array_pop ( $tr ) ) $z = '' . $z ; if ( array_pop ( $td ) ) $z = '' . $z ; array_pop ( $ltr ) ; $t[$k] = $z . str_repeat( '
', $indent_level ); } else if ( '|-' == substr ( $x , 0 , 2 ) ) { # Allows for |--------------- $x = substr ( $x , 1 ) ; while ( $x != '' && substr ( $x , 0 , 1 ) == '-' ) $x = substr ( $x , 1 ) ; $z = '' ; $l = array_pop ( $ltd ) ; array_pop ( $has_opened_tr ); array_push ( $has_opened_tr , true ) ; if ( array_pop ( $tr ) ) $z = '' . $z ; if ( array_pop ( $td ) ) $z = '' . $z ; array_pop ( $ltr ) ; $t[$k] = $z ; array_push ( $tr , false ) ; array_push ( $td , false ) ; array_push ( $ltd , '' ) ; $attributes = $this->unstripForHTML( $x ); array_push ( $ltr , Sanitizer::fixTagAttributes ( $attributes, 'tr' ) ) ; } else if ( '|' == $fc || '!' == $fc || '|+' == substr ( $x , 0 , 2 ) ) { # Caption # $x is a table row if ( '|+' == substr ( $x , 0 , 2 ) ) { $fc = '+' ; $x = substr ( $x , 1 ) ; } $after = substr ( $x , 1 ) ; if ( $fc == '!' ) $after = str_replace ( '!!' , '||' , $after ) ; // Split up multiple cells on the same line. // FIXME: This can result in improper nesting of tags processed // by earlier parser steps, but should avoid splitting up eg // attribute values containing literal "||". $after = wfExplodeMarkup( '||', $after ); $t[$k] = '' ; # Loop through each table cell foreach ( $after AS $theline ) { $z = '' ; if ( $fc != '+' ) { $tra = array_pop ( $ltr ) ; if ( !array_pop ( $tr ) ) $z = '\n" ; array_push ( $tr , true ) ; array_push ( $ltr , '' ) ; array_pop ( $has_opened_tr ); array_push ( $has_opened_tr , true ) ; } $l = array_pop ( $ltd ) ; if ( array_pop ( $td ) ) $z = '' . $z ; if ( $fc == '|' ) $l = 'td' ; else if ( $fc == '!' ) $l = 'th' ; else if ( $fc == '+' ) $l = 'caption' ; else $l = '' ; array_push ( $ltd , $l ) ; # Cell parameters $y = explode ( '|' , $theline , 2 ) ; # Note that a '|' inside an invalid link should not # be mistaken as delimiting cell parameters if ( strpos( $y[0], '[[' ) !== false ) { $y = array ($theline); } if ( count ( $y ) == 1 ) $y = "{$z}<{$l}>{$y[0]}" ; else { $attributes = $this->unstripForHTML( $y[0] ); $y = "{$z}<{$l}".Sanitizer::fixTagAttributes($attributes, $l).">{$y[1]}" ; } $t[$k] .= $y ; array_push ( $td , true ) ; } } } # Closing open td, tr && table while ( count ( $td ) > 0 ) { $l = array_pop ( $ltd ) ; if ( array_pop ( $td ) ) $t[] = '' ; if ( array_pop ( $tr ) ) $t[] = '' ; if ( !array_pop ( $has_opened_tr ) ) $t[] = "" ; $t[] = '' ; } $t = implode ( "\n" , $t ) ; # special case: don't return empty table if($t == "\n\n
") $t = ''; wfProfileOut( $fname ); return $t ; } /** * Helper function for parse() that transforms wiki markup into * HTML. Only called for $mOutputType == OT_HTML. * * @private */ function internalParse( $text ) { $args = array(); $isMain = true; $fname = 'Parser::internalParse'; wfProfileIn( $fname ); # Remove tags and sections $text = strtr( $text, array( '' => '' , '' => '' ) ); $text = strtr( $text, array( '' => '', '' => '') ); $text = preg_replace( '/.*?<\/includeonly>/s', '', $text ); $text = Sanitizer::removeHTMLtags( $text, array( &$this, 'attributeStripCallback' ) ); $text = $this->replaceVariables( $text, $args ); // Tables need to come after variable replacement for things to work // properly; putting them before other transformations should keep // exciting things like link expansions from showing up in surprising // places. $text = $this->doTableStuff( $text ); $text = preg_replace( '/(^|\n)-----*/', '\\1
', $text ); $text = $this->stripToc( $text ); $this->stripNoGallery( $text ); $text = $this->doHeadings( $text ); if($this->mOptions->getUseDynamicDates()) { $df =& DateFormatter::getInstance(); $text = $df->reformat( $this->mOptions->getDateFormat(), $text ); } $text = $this->doAllQuotes( $text ); $text = $this->replaceInternalLinks( $text ); $text = $this->replaceExternalLinks( $text ); # replaceInternalLinks may sometimes leave behind # absolute URLs, which have to be masked to hide them from replaceExternalLinks $text = str_replace($this->mUniqPrefix."NOPARSE", "", $text); $text = $this->doMagicLinks( $text ); $text = $this->formatHeadings( $text, $isMain ); wfProfileOut( $fname ); return $text; } /** * Replace special strings like "ISBN xxx" and "RFC xxx" with * magic external links. * * @private */ function &doMagicLinks( &$text ) { $text = $this->magicISBN( $text ); $text = $this->magicRFC( $text, 'RFC ', 'rfcurl' ); $text = $this->magicRFC( $text, 'PMID ', 'pubmedurl' ); return $text; } /** * Parse headers and return html * * @private */ function doHeadings( $text ) { $fname = 'Parser::doHeadings'; wfProfileIn( $fname ); for ( $i = 6; $i >= 1; --$i ) { $h = str_repeat( '=', $i ); $text = preg_replace( "/^{$h}(.+){$h}\\s*$/m", "\\1\\2", $text ); } wfProfileOut( $fname ); return $text; } /** * Replace single quotes with HTML markup * @private * @return string the altered text */ function doAllQuotes( $text ) { $fname = 'Parser::doAllQuotes'; wfProfileIn( $fname ); $outtext = ''; $lines = explode( "\n", $text ); foreach ( $lines as $line ) { $outtext .= $this->doQuotes ( $line ) . "\n"; } $outtext = substr($outtext, 0,-1); wfProfileOut( $fname ); return $outtext; } /** * Helper function for doAllQuotes() * @private */ function doQuotes( $text ) { $arr = preg_split( "/(''+)/", $text, -1, PREG_SPLIT_DELIM_CAPTURE ); if ( count( $arr ) == 1 ) return $text; else { # First, do some preliminary work. This may shift some apostrophes from # being mark-up to being text. It also counts the number of occurrences # of bold and italics mark-ups. $i = 0; $numbold = 0; $numitalics = 0; foreach ( $arr as $r ) { if ( ( $i % 2 ) == 1 ) { # If there are ever four apostrophes, assume the first is supposed to # be text, and the remaining three constitute mark-up for bold text. if ( strlen( $arr[$i] ) == 4 ) { $arr[$i-1] .= "'"; $arr[$i] = "'''"; } # If there are more than 5 apostrophes in a row, assume they're all # text except for the last 5. else if ( strlen( $arr[$i] ) > 5 ) { $arr[$i-1] .= str_repeat( "'", strlen( $arr[$i] ) - 5 ); $arr[$i] = "'''''"; } # Count the number of occurrences of bold and italics mark-ups. # We are not counting sequences of five apostrophes. if ( strlen( $arr[$i] ) == 2 ) $numitalics++; else if ( strlen( $arr[$i] ) == 3 ) $numbold++; else if ( strlen( $arr[$i] ) == 5 ) { $numitalics++; $numbold++; } } $i++; } # If there is an odd number of both bold and italics, it is likely # that one of the bold ones was meant to be an apostrophe followed # by italics. Which one we cannot know for certain, but it is more # likely to be one that has a single-letter word before it. if ( ( $numbold % 2 == 1 ) && ( $numitalics % 2 == 1 ) ) { $i = 0; $firstsingleletterword = -1; $firstmultiletterword = -1; $firstspace = -1; foreach ( $arr as $r ) { if ( ( $i % 2 == 1 ) and ( strlen( $r ) == 3 ) ) { $x1 = substr ($arr[$i-1], -1); $x2 = substr ($arr[$i-1], -2, 1); if ($x1 == ' ') { if ($firstspace == -1) $firstspace = $i; } else if ($x2 == ' ') { if ($firstsingleletterword == -1) $firstsingleletterword = $i; } else { if ($firstmultiletterword == -1) $firstmultiletterword = $i; } } $i++; } # If there is a single-letter word, use it! if ($firstsingleletterword > -1) { $arr [ $firstsingleletterword ] = "''"; $arr [ $firstsingleletterword-1 ] .= "'"; } # If not, but there's a multi-letter word, use that one. else if ($firstmultiletterword > -1) { $arr [ $firstmultiletterword ] = "''"; $arr [ $firstmultiletterword-1 ] .= "'"; } # ... otherwise use the first one that has neither. # (notice that it is possible for all three to be -1 if, for example, # there is only one pentuple-apostrophe in the line) else if ($firstspace > -1) { $arr [ $firstspace ] = "''"; $arr [ $firstspace-1 ] .= "'"; } } # Now let's actually convert our apostrophic mush to HTML! $output = ''; $buffer = ''; $state = ''; $i = 0; foreach ($arr as $r) { if (($i % 2) == 0) { if ($state == 'both') $buffer .= $r; else $output .= $r; } else { if (strlen ($r) == 2) { if ($state == 'i') { $output .= ''; $state = ''; } else if ($state == 'bi') { $output .= ''; $state = 'b'; } else if ($state == 'ib') { $output .= ''; $state = 'b'; } else if ($state == 'both') { $output .= ''.$buffer.''; $state = 'b'; } else # $state can be 'b' or '' { $output .= ''; $state .= 'i'; } } else if (strlen ($r) == 3) { if ($state == 'b') { $output .= ''; $state = ''; } else if ($state == 'bi') { $output .= ''; $state = 'i'; } else if ($state == 'ib') { $output .= ''; $state = 'i'; } else if ($state == 'both') { $output .= ''.$buffer.''; $state = 'i'; } else # $state can be 'i' or '' { $output .= ''; $state .= 'b'; } } else if (strlen ($r) == 5) { if ($state == 'b') { $output .= ''; $state = 'i'; } else if ($state == 'i') { $output .= ''; $state = 'b'; } else if ($state == 'bi') { $output .= ''; $state = ''; } else if ($state == 'ib') { $output .= ''; $state = ''; } else if ($state == 'both') { $output .= ''.$buffer.''; $state = ''; } else # ($state == '') { $buffer = ''; $state = 'both'; } } } $i++; } # Now close all remaining tags. Notice that the order is important. if ($state == 'b' || $state == 'ib') $output .= ''; if ($state == 'i' || $state == 'bi' || $state == 'ib') $output .= ''; if ($state == 'bi') $output .= ''; if ($state == 'both') $output .= ''.$buffer.''; return $output; } } /** * Replace external links * * Note: this is all very hackish and the order of execution matters a lot. * Make sure to run maintenance/parserTests.php if you change this code. * * @private */ function replaceExternalLinks( $text ) { global $wgContLang; $fname = 'Parser::replaceExternalLinks'; wfProfileIn( $fname ); $sk =& $this->mOptions->getSkin(); $bits = preg_split( EXT_LINK_BRACKETED, $text, -1, PREG_SPLIT_DELIM_CAPTURE ); $s = $this->replaceFreeExternalLinks( array_shift( $bits ) ); $i = 0; while ( $i' (which were escaped by # removeHTMLtags()) should not be included in # URLs, per RFC 2396. if (preg_match('/&(lt|gt);/', $url, $m2, PREG_OFFSET_CAPTURE)) { $text = substr($url, $m2[0][1]) . ' ' . $text; $url = substr($url, 0, $m2[0][1]); } # If the link text is an image URL, replace it with an tag # This happened by accident in the original parser, but some people used it extensively $img = $this->maybeMakeExternalImage( $text ); if ( $img !== false ) { $text = $img; } $dtrail = ''; # Set linktype for CSS - if URL==text, link is essentially free $linktype = ($text == $url) ? 'free' : 'text'; # No link text, e.g. [http://domain.tld/some.link] if ( $text == '' ) { # Autonumber if allowed. See bug #5918 if ( strpos( wfUrlProtocols(), substr($protocol, 0, strpos($protocol, ':')) ) !== false ) { $text = '[' . ++$this->mAutonumber . ']'; $linktype = 'autonumber'; } else { # Otherwise just use the URL $text = htmlspecialchars( $url ); $linktype = 'free'; } } else { # Have link text, e.g. [http://domain.tld/some.link text]s # Check for trail list( $dtrail, $trail ) = Linker::splitTrail( $trail ); } $text = $wgContLang->markNoConversion($text); # Normalize any HTML entities in input. They will be # re-escaped by makeExternalLink(). $url = Sanitizer::decodeCharReferences( $url ); # Escape any control characters introduced by the above step $url = preg_replace( '/[\][<>"\\x00-\\x20\\x7F]/e', "urlencode('\\0')", $url ); # Process the trail (i.e. everything after this link up until start of the next link), # replacing any non-bracketed links $trail = $this->replaceFreeExternalLinks( $trail ); # Use the encoded URL # This means that users can paste URLs directly into the text # Funny characters like ö aren't valid in URLs anyway # This was changed in August 2004 $s .= $sk->makeExternalLink( $url, $text, false, $linktype, $this->mTitle->getNamespace() ) . $dtrail . $trail; # Register link in the output object. # Replace unnecessary URL escape codes with the referenced character # This prevents spammers from hiding links from the filters $pasteurized = Parser::replaceUnusualEscapes( $url ); $this->mOutput->addExternalLink( $pasteurized ); } wfProfileOut( $fname ); return $s; } /** * Replace anything that looks like a URL with a link * @private */ function replaceFreeExternalLinks( $text ) { global $wgContLang; $fname = 'Parser::replaceFreeExternalLinks'; wfProfileIn( $fname ); $bits = preg_split( '/(\b(?:' . wfUrlProtocols() . '))/S', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); $s = array_shift( $bits ); $i = 0; $sk =& $this->mOptions->getSkin(); while ( $i < count( $bits ) ){ $protocol = $bits[$i++]; $remainder = $bits[$i++]; if ( preg_match( '/^('.EXT_LINK_URL_CLASS.'+)(.*)$/s', $remainder, $m ) ) { # Found some characters after the protocol that look promising $url = $protocol . $m[1]; $trail = $m[2]; # special case: handle urls as url args: # http://www.example.com/foo?=http://www.example.com/bar if(strlen($trail) == 0 && isset($bits[$i]) && preg_match('/^'. wfUrlProtocols() . '$/S', $bits[$i]) && preg_match( '/^('.EXT_LINK_URL_CLASS.'+)(.*)$/s', $bits[$i + 1], $m )) { # add protocol, arg $url .= $bits[$i] . $m[1]; # protocol, url as arg to previous link $i += 2; $trail = $m[2]; } # The characters '<' and '>' (which were escaped by # removeHTMLtags()) should not be included in # URLs, per RFC 2396. if (preg_match('/&(lt|gt);/', $url, $m2, PREG_OFFSET_CAPTURE)) { $trail = substr($url, $m2[0][1]) . $trail; $url = substr($url, 0, $m2[0][1]); } # Move trailing punctuation to $trail $sep = ',;\.:!?'; # If there is no left bracket, then consider right brackets fair game too if ( strpos( $url, '(' ) === false ) { $sep .= ')'; } $numSepChars = strspn( strrev( $url ), $sep ); if ( $numSepChars ) { $trail = substr( $url, -$numSepChars ) . $trail; $url = substr( $url, 0, -$numSepChars ); } # Normalize any HTML entities in input. They will be # re-escaped by makeExternalLink() or maybeMakeExternalImage() $url = Sanitizer::decodeCharReferences( $url ); # Escape any control characters introduced by the above step $url = preg_replace( '/[\][<>"\\x00-\\x20\\x7F]/e', "urlencode('\\0')", $url ); # Is this an external image? $text = $this->maybeMakeExternalImage( $url ); if ( $text === false ) { # Not an image, make a link $text = $sk->makeExternalLink( $url, $wgContLang->markNoConversion($url), true, 'free', $this->mTitle->getNamespace() ); # Register it in the output object... # Replace unnecessary URL escape codes with their equivalent characters $pasteurized = Parser::replaceUnusualEscapes( $url ); $this->mOutput->addExternalLink( $pasteurized ); } $s .= $text . $trail; } else { $s .= $protocol . $remainder; } } wfProfileOut( $fname ); return $s; } /** * Replace unusual URL escape codes with their equivalent characters * @param string * @return string * @static * @fixme This can merge genuinely required bits in the path or query string, * breaking legit URLs. A proper fix would treat the various parts of * the URL differently; as a workaround, just use the output for * statistical records, not for actual linking/output. */ function replaceUnusualEscapes( $url ) { return preg_replace_callback( '/%[0-9A-Fa-f]{2}/', array( 'Parser', 'replaceUnusualEscapesCallback' ), $url ); } /** * Callback function used in replaceUnusualEscapes(). * Replaces unusual URL escape codes with their equivalent character * @static * @private */ function replaceUnusualEscapesCallback( $matches ) { $char = urldecode( $matches[0] ); $ord = ord( $char ); // Is it an unsafe or HTTP reserved character according to RFC 1738? if ( $ord > 32 && $ord < 127 && strpos( '<>"#{}|\^~[]`;/?', $char ) === false ) { // No, shouldn't be escaped return $char; } else { // Yes, leave it escaped return $matches[0]; } } /** * make an image if it's allowed, either through the global * option or through the exception * @private */ function maybeMakeExternalImage( $url ) { $sk =& $this->mOptions->getSkin(); $imagesfrom = $this->mOptions->getAllowExternalImagesFrom(); $imagesexception = !empty($imagesfrom); $text = false; if ( $this->mOptions->getAllowExternalImages() || ( $imagesexception && strpos( $url, $imagesfrom ) === 0 ) ) { if ( preg_match( EXT_IMAGE_REGEX, $url ) ) { # Image found $text = $sk->makeExternalImage( htmlspecialchars( $url ) ); } } return $text; } /** * Process [[ ]] wikilinks * * @private */ function replaceInternalLinks( $s ) { global $wgContLang; static $fname = 'Parser::replaceInternalLinks' ; wfProfileIn( $fname ); wfProfileIn( $fname.'-setup' ); static $tc = FALSE; # the % is needed to support urlencoded titles as well if ( !$tc ) { $tc = Title::legalChars() . '#%'; } $sk =& $this->mOptions->getSkin(); #split the entire text string on occurences of [[ $a = explode( '[[', ' ' . $s ); #get the first element (all text up to first [[), and remove the space we added $s = array_shift( $a ); $s = substr( $s, 1 ); # Match a link having the form [[namespace:link|alternate]]trail static $e1 = FALSE; if ( !$e1 ) { $e1 = "/^([{$tc}]+)(?:\\|(.+?))?]](.*)\$/sD"; } # Match cases where there is no "]]", which might still be images static $e1_img = FALSE; if ( !$e1_img ) { $e1_img = "/^([{$tc}]+)\\|(.*)\$/sD"; } # Match the end of a line for a word that's not followed by whitespace, # e.g. in the case of 'The Arab al[[Razi]]', 'al' will be matched $e2 = wfMsgForContent( 'linkprefix' ); $useLinkPrefixExtension = $wgContLang->linkPrefixExtension(); if( is_null( $this->mTitle ) ) { throw new MWException( 'nooo' ); } $nottalk = !$this->mTitle->isTalkPage(); if ( $useLinkPrefixExtension ) { if ( preg_match( $e2, $s, $m ) ) { $first_prefix = $m[2]; } else { $first_prefix = false; } } else { $prefix = ''; } $selflink = $this->mTitle->getPrefixedText(); wfProfileOut( $fname.'-setup' ); $checkVariantLink = sizeof($wgContLang->getVariants())>1; $useSubpages = $this->areSubpagesAllowed(); # Loop for each link for ($k = 0; isset( $a[$k] ); $k++) { $line = $a[$k]; if ( $useLinkPrefixExtension ) { wfProfileIn( $fname.'-prefixhandling' ); if ( preg_match( $e2, $s, $m ) ) { $prefix = $m[2]; $s = $m[1]; } else { $prefix=''; } # first link if($first_prefix) { $prefix = $first_prefix; $first_prefix = false; } wfProfileOut( $fname.'-prefixhandling' ); } $might_be_img = false; if ( preg_match( $e1, $line, $m ) ) { # page with normal text or alt $text = $m[2]; # If we get a ] at the beginning of $m[3] that means we have a link that's something like: # [[Image:Foo.jpg|[http://example.com desc]]] <- having three ] in a row fucks up, # the real problem is with the $e1 regex # See bug 1300. # # Still some problems for cases where the ] is meant to be outside punctuation, # and no image is in sight. See bug 2095. # if( $text !== '' && preg_match( "/^\](.*)/s", $m[3], $n ) && strpos($text, '[') !== false ) { $text .= ']'; # so that replaceExternalLinks($text) works later $m[3] = $n[1]; } # fix up urlencoded title texts if(preg_match('/%/', $m[1] )) # Should anchors '#' also be rejected? $m[1] = str_replace( array('<', '>'), array('<', '>'), urldecode($m[1]) ); $trail = $m[3]; } elseif( preg_match($e1_img, $line, $m) ) { # Invalid, but might be an image with a link in its caption $might_be_img = true; $text = $m[2]; if(preg_match('/%/', $m[1] )) $m[1] = urldecode($m[1]); $trail = ""; } else { # Invalid form; output directly $s .= $prefix . '[[' . $line ; continue; } # Don't allow internal links to pages containing # PROTO: where PROTO is a valid URL protocol; these # should be external links. if (preg_match('/^(\b(?:' . wfUrlProtocols() . '))/', $m[1])) { $s .= $prefix . '[[' . $line ; continue; } # Make subpage if necessary if( $useSubpages ) { $link = $this->maybeDoSubpageLink( $m[1], $text ); } else { $link = $m[1]; } $noforce = (substr($m[1], 0, 1) != ':'); if (!$noforce) { # Strip off leading ':' $link = substr($link, 1); } $nt = Title::newFromText( $this->unstripNoWiki($link, $this->mStripState) ); if( !$nt ) { $s .= $prefix . '[[' . $line; continue; } #check other language variants of the link #if the article does not exist if( $checkVariantLink && $nt->getArticleID() == 0 ) { $wgContLang->findVariantLink($link, $nt); } $ns = $nt->getNamespace(); $iw = $nt->getInterWiki(); if ($might_be_img) { # if this is actually an invalid link if ($ns == NS_IMAGE && $noforce) { #but might be an image $found = false; while (isset ($a[$k+1]) ) { #look at the next 'line' to see if we can close it there $spliced = array_splice( $a, $k + 1, 1 ); $next_line = array_shift( $spliced ); if( preg_match("/^(.*?]].*?)]](.*)$/sD", $next_line, $m) ) { # the first ]] closes the inner link, the second the image $found = true; $text .= '[[' . $m[1]; $trail = $m[2]; break; } elseif( preg_match("/^.*?]].*$/sD", $next_line, $m) ) { #if there's exactly one ]] that's fine, we'll keep looking $text .= '[[' . $m[0]; } else { #if $next_line is invalid too, we need look no further $text .= '[[' . $next_line; break; } } if ( !$found ) { # we couldn't find the end of this imageLink, so output it raw #but don't ignore what might be perfectly normal links in the text we've examined $text = $this->replaceInternalLinks($text); $s .= $prefix . '[[' . $link . '|' . $text; # note: no $trail, because without an end, there *is* no trail continue; } } else { #it's not an image, so output it raw $s .= $prefix . '[[' . $link . '|' . $text; # note: no $trail, because without an end, there *is* no trail continue; } } $wasblank = ( '' == $text ); if( $wasblank ) $text = $link; # Link not escaped by : , create the various objects if( $noforce ) { # Interwikis if( $iw && $this->mOptions->getInterwikiMagic() && $nottalk && $wgContLang->getLanguageName( $iw ) ) { $this->mOutput->addLanguageLink( $nt->getFullText() ); $s = rtrim($s . "\n"); $s .= trim($prefix . $trail, "\n") == '' ? '': $prefix . $trail; continue; } if ( $ns == NS_IMAGE ) { wfProfileIn( "$fname-image" ); if ( !wfIsBadImage( $nt->getDBkey() ) ) { # recursively parse links inside the image caption # actually, this will parse them in any other parameters, too, # but it might be hard to fix that, and it doesn't matter ATM $text = $this->replaceExternalLinks($text); $text = $this->replaceInternalLinks($text); # cloak any absolute URLs inside the image markup, so replaceExternalLinks() won't touch them $s .= $prefix . $this->armorLinks( $this->makeImage( $nt, $text ) ) . $trail; $this->mOutput->addImage( $nt->getDBkey() ); wfProfileOut( "$fname-image" ); continue; } else { # We still need to record the image's presence on the page $this->mOutput->addImage( $nt->getDBkey() ); } wfProfileOut( "$fname-image" ); } if ( $ns == NS_CATEGORY ) { wfProfileIn( "$fname-category" ); $s = rtrim($s . "\n"); # bug 87 if ( $wasblank ) { if ( $this->mTitle->getNamespace() == NS_CATEGORY ) { $sortkey = $this->mTitle->getText(); } else { $sortkey = $this->mTitle->getPrefixedText(); } } else { $sortkey = $text; } $sortkey = Sanitizer::decodeCharReferences( $sortkey ); $sortkey = str_replace( "\n", '', $sortkey ); $sortkey = $wgContLang->convertCategoryKey( $sortkey ); $this->mOutput->addCategory( $nt->getDBkey(), $sortkey ); /** * Strip the whitespace Category links produce, see bug 87 * @todo We might want to use trim($tmp, "\n") here. */ $s .= trim($prefix . $trail, "\n") == '' ? '': $prefix . $trail; wfProfileOut( "$fname-category" ); continue; } } if( ( $nt->getPrefixedText() === $selflink ) && ( $nt->getFragment() === '' ) ) { # Self-links are handled specially; generally de-link and change to bold. $s .= $prefix . $sk->makeSelfLinkObj( $nt, $text, '', $trail ); continue; } # Special and Media are pseudo-namespaces; no pages actually exist in them if( $ns == NS_MEDIA ) { $link = $sk->makeMediaLinkObj( $nt, $text ); # Cloak with NOPARSE to avoid replacement in replaceExternalLinks $s .= $prefix . $this->armorLinks( $link ) . $trail; $this->mOutput->addImage( $nt->getDBkey() ); continue; } elseif( $ns == NS_SPECIAL ) { $s .= $this->makeKnownLinkHolder( $nt, $text, '', $trail, $prefix ); continue; } elseif( $ns == NS_IMAGE ) { $img = Image::newFromTitle( $nt ); if( $img->exists() ) { // Force a blue link if the file exists; may be a remote // upload on the shared repository, and we want to see its // auto-generated page. $s .= $this->makeKnownLinkHolder( $nt, $text, '', $trail, $prefix ); continue; } } $s .= $this->makeLinkHolder( $nt, $text, '', $trail, $prefix ); } wfProfileOut( $fname ); return $s; } /** * Make a link placeholder. The text returned can be later resolved to a real link with * replaceLinkHolders(). This is done for two reasons: firstly to avoid further * parsing of interwiki links, and secondly to allow all extistence checks and * article length checks (for stub links) to be bundled into a single query. * */ function makeLinkHolder( &$nt, $text = '', $query = '', $trail = '', $prefix = '' ) { if ( ! is_object($nt) ) { # Fail gracefully $retVal = "{$prefix}{$text}{$trail}"; } else { # Separate the link trail from the rest of the link list( $inside, $trail ) = Linker::splitTrail( $trail ); if ( $nt->isExternal() ) { $nr = array_push( $this->mInterwikiLinkHolders['texts'], $prefix.$text.$inside ); $this->mInterwikiLinkHolders['titles'][] = $nt; $retVal = '{$trail}"; } else { $nr = array_push( $this->mLinkHolders['namespaces'], $nt->getNamespace() ); $this->mLinkHolders['dbkeys'][] = $nt->getDBkey(); $this->mLinkHolders['queries'][] = $query; $this->mLinkHolders['texts'][] = $prefix.$text.$inside; $this->mLinkHolders['titles'][] = $nt; $retVal = '{$trail}"; } } return $retVal; } /** * Render a forced-blue link inline; protect against double expansion of * URLs if we're in a mode that prepends full URL prefixes to internal links. * Since this little disaster has to split off the trail text to avoid * breaking URLs in the following text without breaking trails on the * wiki links, it's been made into a horrible function. * * @param Title $nt * @param string $text * @param string $query * @param string $trail * @param string $prefix * @return string HTML-wikitext mix oh yuck */ function makeKnownLinkHolder( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) { list( $inside, $trail ) = Linker::splitTrail( $trail ); $sk =& $this->mOptions->getSkin(); $link = $sk->makeKnownLinkObj( $nt, $text, $query, $inside, $prefix ); return $this->armorLinks( $link ) . $trail; } /** * Insert a NOPARSE hacky thing into any inline links in a chunk that's * going to go through further parsing steps before inline URL expansion. * * In particular this is important when using action=render, which causes * full URLs to be included. * * Oh man I hate our multi-layer parser! * * @param string more-or-less HTML * @return string less-or-more HTML with NOPARSE bits */ function armorLinks( $text ) { return preg_replace( "/\b(" . wfUrlProtocols() . ')/', "{$this->mUniqPrefix}NOPARSE$1", $text ); } /** * Return true if subpage links should be expanded on this page. * @return bool */ function areSubpagesAllowed() { # Some namespaces don't allow subpages global $wgNamespacesWithSubpages; return !empty($wgNamespacesWithSubpages[$this->mTitle->getNamespace()]); } /** * Handle link to subpage if necessary * @param string $target the source of the link * @param string &$text the link text, modified as necessary * @return string the full name of the link * @private */ function maybeDoSubpageLink($target, &$text) { # Valid link forms: # Foobar -- normal # :Foobar -- override special treatment of prefix (images, language links) # /Foobar -- convert to CurrentPage/Foobar # /Foobar/ -- convert to CurrentPage/Foobar, strip the initial / from text # ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage # ../Foobar -- convert to CurrentPage/Foobar, from CurrentPage/CurrentSubPage $fname = 'Parser::maybeDoSubpageLink'; wfProfileIn( $fname ); $ret = $target; # default return value is no change # Some namespaces don't allow subpages, # so only perform processing if subpages are allowed if( $this->areSubpagesAllowed() ) { # Look at the first character if( $target != '' && $target{0} == '/' ) { # / at end means we don't want the slash to be shown if( substr( $target, -1, 1 ) == '/' ) { $target = substr( $target, 1, -1 ); $noslash = $target; } else { $noslash = substr( $target, 1 ); } $ret = $this->mTitle->getPrefixedText(). '/' . trim($noslash); if( '' === $text ) { $text = $target; } # this might be changed for ugliness reasons } else { # check for .. subpage backlinks $dotdotcount = 0; $nodotdot = $target; while( strncmp( $nodotdot, "../", 3 ) == 0 ) { ++$dotdotcount; $nodotdot = substr( $nodotdot, 3 ); } if($dotdotcount > 0) { $exploded = explode( '/', $this->mTitle->GetPrefixedText() ); if( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page $ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) ); # / at the end means don't show full path if( substr( $nodotdot, -1, 1 ) == '/' ) { $nodotdot = substr( $nodotdot, 0, -1 ); if( '' === $text ) { $text = $nodotdot; } } $nodotdot = trim( $nodotdot ); if( $nodotdot != '' ) { $ret .= '/' . $nodotdot; } } } } } wfProfileOut( $fname ); return $ret; } /**#@+ * Used by doBlockLevels() * @private */ /* private */ function closeParagraph() { $result = ''; if ( '' != $this->mLastSection ) { $result = 'mLastSection . ">\n"; } $this->mInPre = false; $this->mLastSection = ''; return $result; } # getCommon() returns the length of the longest common substring # of both arguments, starting at the beginning of both. # /* private */ function getCommon( $st1, $st2 ) { $fl = strlen( $st1 ); $shorter = strlen( $st2 ); if ( $fl < $shorter ) { $shorter = $fl; } for ( $i = 0; $i < $shorter; ++$i ) { if ( $st1{$i} != $st2{$i} ) { break; } } return $i; } # These next three functions open, continue, and close the list # element appropriate to the prefix character passed into them. # /* private */ function openList( $char ) { $result = $this->closeParagraph(); if ( '*' == $char ) { $result .= '
  • '; } else if ( '#' == $char ) { $result .= '
    1. '; } else if ( ':' == $char ) { $result .= '
      '; } else if ( ';' == $char ) { $result .= '
      '; $this->mDTopen = true; } else { $result = ''; } return $result; } /* private */ function nextItem( $char ) { if ( '*' == $char || '#' == $char ) { return '
    2. '; } else if ( ':' == $char || ';' == $char ) { $close = ''; if ( $this->mDTopen ) { $close = ''; } if ( ';' == $char ) { $this->mDTopen = true; return $close . '
      '; } else { $this->mDTopen = false; return $close . '
      '; } } return ''; } /* private */ function closeList( $char ) { if ( '*' == $char ) { $text = '
'; } else if ( '#' == $char ) { $text = ''; } else if ( ':' == $char ) { if ( $this->mDTopen ) { $this->mDTopen = false; $text = ''; } else { $text = ''; } } else { return ''; } return $text."\n"; } /**#@-*/ /** * Make lists from lines starting with ':', '*', '#', etc. * * @private * @return string the lists rendered as HTML */ function doBlockLevels( $text, $linestart ) { $fname = 'Parser::doBlockLevels'; wfProfileIn( $fname ); # Parsing through the text line by line. The main thing # happening here is handling of block-level elements p, pre, # and making lists from lines starting with * # : etc. # $textLines = explode( "\n", $text ); $lastPrefix = $output = ''; $this->mDTopen = $inBlockElem = false; $prefixLength = 0; $paragraphStack = false; if ( !$linestart ) { $output .= array_shift( $textLines ); } foreach ( $textLines as $oLine ) { $lastPrefixLength = strlen( $lastPrefix ); $preCloseMatch = preg_match('/<\\/pre/i', $oLine ); $preOpenMatch = preg_match('/
mInPre ) {
				# Multiple prefixes may abut each other for nested lists.
				$prefixLength = strspn( $oLine, '*#:;' );
				$pref = substr( $oLine, 0, $prefixLength );

				# eh?
				$pref2 = str_replace( ';', ':', $pref );
				$t = substr( $oLine, $prefixLength );
				$this->mInPre = !empty($preOpenMatch);
			} else {
				# Don't interpret any other prefixes in preformatted text
				$prefixLength = 0;
				$pref = $pref2 = '';
				$t = $oLine;
			}

			# List generation
			if( $prefixLength && 0 == strcmp( $lastPrefix, $pref2 ) ) {
				# Same as the last item, so no need to deal with nesting or opening stuff
				$output .= $this->nextItem( substr( $pref, -1 ) );
				$paragraphStack = false;

				if ( substr( $pref, -1 ) == ';') {
					# The one nasty exception: definition lists work like this:
					# ; title : definition text
					# So we check for : in the remainder text to split up the
					# title and definition, without b0rking links.
					$term = $t2 = '';
					if ($this->findColonNoLinks($t, $term, $t2) !== false) {
						$t = $t2;
						$output .= $term . $this->nextItem( ':' );
					}
				}
			} elseif( $prefixLength || $lastPrefixLength ) {
				# Either open or close a level...
				$commonPrefixLength = $this->getCommon( $pref, $lastPrefix );
				$paragraphStack = false;

				while( $commonPrefixLength < $lastPrefixLength ) {
					$output .= $this->closeList( $lastPrefix{$lastPrefixLength-1} );
					--$lastPrefixLength;
				}
				if ( $prefixLength <= $commonPrefixLength && $commonPrefixLength > 0 ) {
					$output .= $this->nextItem( $pref{$commonPrefixLength-1} );
				}
				while ( $prefixLength > $commonPrefixLength ) {
					$char = substr( $pref, $commonPrefixLength, 1 );
					$output .= $this->openList( $char );

					if ( ';' == $char ) {
						# FIXME: This is dupe of code above
						if ($this->findColonNoLinks($t, $term, $t2) !== false) {
							$t = $t2;
							$output .= $term . $this->nextItem( ':' );
						}
					}
					++$commonPrefixLength;
				}
				$lastPrefix = $pref2;
			}
			if( 0 == $prefixLength ) {
				wfProfileIn( "$fname-paragraph" );
				# No prefix (not in list)--go to paragraph mode
				// XXX: use a stack for nestable elements like span, table and div
				$openmatch = preg_match('/(mUniqPrefix.'-pre|<\\/li|<\\/ul|<\\/ol|closeParagraph();
					if ( $preOpenMatch and !$preCloseMatch ) {
						$this->mInPre = true;
					}
					if ( $closematch ) {
						$inBlockElem = false;
					} else {
						$inBlockElem = true;
					}
				} else if ( !$inBlockElem && !$this->mInPre ) {
					if ( ' ' == $t{0} and ( $this->mLastSection == 'pre' or trim($t) != '' ) ) {
						// pre
						if ($this->mLastSection != 'pre') {
							$paragraphStack = false;
							$output .= $this->closeParagraph().'
';
							$this->mLastSection = 'pre';
						}
						$t = substr( $t, 1 );
					} else {
						// paragraph
						if ( '' == trim($t) ) {
							if ( $paragraphStack ) {
								$output .= $paragraphStack.'
'; $paragraphStack = false; $this->mLastSection = 'p'; } else { if ($this->mLastSection != 'p' ) { $output .= $this->closeParagraph(); $this->mLastSection = ''; $paragraphStack = '

'; } else { $paragraphStack = '

'; } } } else { if ( $paragraphStack ) { $output .= $paragraphStack; $paragraphStack = false; $this->mLastSection = 'p'; } else if ($this->mLastSection != 'p') { $output .= $this->closeParagraph().'

'; $this->mLastSection = 'p'; } } } } wfProfileOut( "$fname-paragraph" ); } // somewhere above we forget to get out of pre block (bug 785) if($preCloseMatch && $this->mInPre) { $this->mInPre = false; } if ($paragraphStack === false) { $output .= $t."\n"; } } while ( $prefixLength ) { $output .= $this->closeList( $pref2{$prefixLength-1} ); --$prefixLength; } if ( '' != $this->mLastSection ) { $output .= 'mLastSection . '>'; $this->mLastSection = ''; } wfProfileOut( $fname ); return $output; } /** * Split up a string on ':', ignoring any occurences inside tags * to prevent illegal overlapping. * @param string $str the string to split * @param string &$before set to everything before the ':' * @param string &$after set to everything after the ':' * return string the position of the ':', or false if none found */ function findColonNoLinks($str, &$before, &$after) { $fname = 'Parser::findColonNoLinks'; wfProfileIn( $fname ); $pos = strpos( $str, ':' ); if( $pos === false ) { // Nothing to find! wfProfileOut( $fname ); return false; } $lt = strpos( $str, '<' ); if( $lt === false || $lt > $pos ) { // Easy; no tag nesting to worry about $before = substr( $str, 0, $pos ); $after = substr( $str, $pos+1 ); wfProfileOut( $fname ); return $pos; } // Ugly state machine to walk through avoiding tags. $state = MW_COLON_STATE_TEXT; $stack = 0; $len = strlen( $str ); for( $i = 0; $i < $len; $i++ ) { $c = $str{$i}; switch( $state ) { // (Using the number is a performance hack for common cases) case 0: // MW_COLON_STATE_TEXT: switch( $c ) { case "<": // Could be either a tag or an tag $state = MW_COLON_STATE_TAGSTART; break; case ":": if( $stack == 0 ) { // We found it! $before = substr( $str, 0, $i ); $after = substr( $str, $i + 1 ); wfProfileOut( $fname ); return $i; } // Embedded in a tag; don't break it. break; default: // Skip ahead looking for something interesting $colon = strpos( $str, ':', $i ); if( $colon === false ) { // Nothing else interesting wfProfileOut( $fname ); return false; } $lt = strpos( $str, '<', $i ); if( $stack === 0 ) { if( $lt === false || $colon < $lt ) { // We found it! $before = substr( $str, 0, $colon ); $after = substr( $str, $colon + 1 ); wfProfileOut( $fname ); return $i; } } if( $lt === false ) { // Nothing else interesting to find; abort! // We're nested, but there's no close tags left. Abort! break 2; } // Skip ahead to next tag start $i = $lt; $state = MW_COLON_STATE_TAGSTART; } break; case 1: // MW_COLON_STATE_TAG: // In a switch( $c ) { case ">": $stack++; $state = MW_COLON_STATE_TEXT; break; case "/": // Slash may be followed by >? $state = MW_COLON_STATE_TAGSLASH; break; default: // ignore } break; case 2: // MW_COLON_STATE_TAGSTART: switch( $c ) { case "/": $state = MW_COLON_STATE_CLOSETAG; break; case "!": $state = MW_COLON_STATE_COMMENT; break; case ">": // Illegal early close? This shouldn't happen D: $state = MW_COLON_STATE_TEXT; break; default: $state = MW_COLON_STATE_TAG; } break; case 3: // MW_COLON_STATE_CLOSETAG: // In a if( $c == ">" ) { $stack--; if( $stack < 0 ) { wfDebug( "Invalid input in $fname; too many close tags\n" ); wfProfileOut( $fname ); return false; } $state = MW_COLON_STATE_TEXT; } break; case MW_COLON_STATE_TAGSLASH: if( $c == ">" ) { // Yes, a self-closed tag $state = MW_COLON_STATE_TEXT; } else { // Probably we're jumping the gun, and this is an attribute $state = MW_COLON_STATE_TAG; } break; case 5: // MW_COLON_STATE_COMMENT: if( $c == "-" ) { $state = MW_COLON_STATE_COMMENTDASH; } break; case MW_COLON_STATE_COMMENTDASH: if( $c == "-" ) { $state = MW_COLON_STATE_COMMENTDASHDASH; } else { $state = MW_COLON_STATE_COMMENT; } break; case MW_COLON_STATE_COMMENTDASHDASH: if( $c == ">" ) { $state = MW_COLON_STATE_TEXT; } else { $state = MW_COLON_STATE_COMMENT; } break; default: throw new MWException( "State machine error in $fname" ); } } if( $stack > 0 ) { wfDebug( "Invalid input in $fname; not enough close tags (stack $stack, state $state)\n" ); return false; } wfProfileOut( $fname ); return false; } /** * Return value of a magic variable (like PAGENAME) * * @private */ function getVariableValue( $index ) { global $wgContLang, $wgSitename, $wgServer, $wgServerName, $wgScriptPath; /** * Some of these require message or data lookups and can be * expensive to check many times. */ static $varCache = array(); if ( wfRunHooks( 'ParserGetVariableValueVarCache', array( &$this, &$varCache ) ) ) if ( isset( $varCache[$index] ) ) return $varCache[$index]; $ts = time(); wfRunHooks( 'ParserGetVariableValueTs', array( &$this, &$ts ) ); switch ( $index ) { case MAG_CURRENTMONTH: return $varCache[$index] = $wgContLang->formatNum( date( 'm', $ts ) ); case MAG_CURRENTMONTHNAME: return $varCache[$index] = $wgContLang->getMonthName( date( 'n', $ts ) ); case MAG_CURRENTMONTHNAMEGEN: return $varCache[$index] = $wgContLang->getMonthNameGen( date( 'n', $ts ) ); case MAG_CURRENTMONTHABBREV: return $varCache[$index] = $wgContLang->getMonthAbbreviation( date( 'n', $ts ) ); case MAG_CURRENTDAY: return $varCache[$index] = $wgContLang->formatNum( date( 'j', $ts ) ); case MAG_CURRENTDAY2: return $varCache[$index] = $wgContLang->formatNum( date( 'd', $ts ) ); case MAG_PAGENAME: return $this->mTitle->getText(); case MAG_PAGENAMEE: return $this->mTitle->getPartialURL(); case MAG_FULLPAGENAME: return $this->mTitle->getPrefixedText(); case MAG_FULLPAGENAMEE: return $this->mTitle->getPrefixedURL(); case MAG_SUBPAGENAME: return $this->mTitle->getSubpageText(); case MAG_SUBPAGENAMEE: return $this->mTitle->getSubpageUrlForm(); case MAG_BASEPAGENAME: return $this->mTitle->getBaseText(); case MAG_BASEPAGENAMEE: return wfUrlEncode( str_replace( ' ', '_', $this->mTitle->getBaseText() ) ); case MAG_TALKPAGENAME: if( $this->mTitle->canTalk() ) { $talkPage = $this->mTitle->getTalkPage(); return $talkPage->getPrefixedText(); } else { return ''; } case MAG_TALKPAGENAMEE: if( $this->mTitle->canTalk() ) { $talkPage = $this->mTitle->getTalkPage(); return $talkPage->getPrefixedUrl(); } else { return ''; } case MAG_SUBJECTPAGENAME: $subjPage = $this->mTitle->getSubjectPage(); return $subjPage->getPrefixedText(); case MAG_SUBJECTPAGENAMEE: $subjPage = $this->mTitle->getSubjectPage(); return $subjPage->getPrefixedUrl(); case MAG_REVISIONID: return $this->mRevisionId; case MAG_NAMESPACE: return str_replace('_',' ',$wgContLang->getNsText( $this->mTitle->getNamespace() ) ); case MAG_NAMESPACEE: return wfUrlencode( $wgContLang->getNsText( $this->mTitle->getNamespace() ) ); case MAG_TALKSPACE: return $this->mTitle->canTalk() ? str_replace('_',' ',$this->mTitle->getTalkNsText()) : ''; case MAG_TALKSPACEE: return $this->mTitle->canTalk() ? wfUrlencode( $this->mTitle->getTalkNsText() ) : ''; case MAG_SUBJECTSPACE: return $this->mTitle->getSubjectNsText(); case MAG_SUBJECTSPACEE: return( wfUrlencode( $this->mTitle->getSubjectNsText() ) ); case MAG_CURRENTDAYNAME: return $varCache[$index] = $wgContLang->getWeekdayName( date( 'w', $ts ) + 1 ); case MAG_CURRENTYEAR: return $varCache[$index] = $wgContLang->formatNum( date( 'Y', $ts ), true ); case MAG_CURRENTTIME: return $varCache[$index] = $wgContLang->time( wfTimestamp( TS_MW, $ts ), false, false ); case MAG_CURRENTWEEK: // @bug 4594 PHP5 has it zero padded, PHP4 does not, cast to // int to remove the padding return $varCache[$index] = $wgContLang->formatNum( (int)date( 'W', $ts ) ); case MAG_CURRENTDOW: return $varCache[$index] = $wgContLang->formatNum( date( 'w', $ts ) ); case MAG_NUMBEROFARTICLES: return $varCache[$index] = $wgContLang->formatNum( wfNumberOfArticles() ); case MAG_NUMBEROFFILES: return $varCache[$index] = $wgContLang->formatNum( wfNumberOfFiles() ); case MAG_NUMBEROFUSERS: return $varCache[$index] = $wgContLang->formatNum( wfNumberOfUsers() ); case MAG_NUMBEROFPAGES: return $varCache[$index] = $wgContLang->formatNum( wfNumberOfPages() ); case MAG_NUMBEROFADMINS: return $varCache[$index] = $wgContLang->formatNum( wfNumberOfAdmins() ); case MAG_CURRENTTIMESTAMP: return $varCache[$index] = wfTimestampNow(); case MAG_CURRENTVERSION: global $wgVersion; return $wgVersion; case MAG_SITENAME: return $wgSitename; case MAG_SERVER: return $wgServer; case MAG_SERVERNAME: return $wgServerName; case MAG_SCRIPTPATH: return $wgScriptPath; case MAG_DIRECTIONMARK: return $wgContLang->getDirMark(); case MAG_CONTENTLANGUAGE: global $wgContLanguageCode; return $wgContLanguageCode; default: $ret = null; if ( wfRunHooks( 'ParserGetVariableValueSwitch', array( &$this, &$varCache, &$index, &$ret ) ) ) return $ret; else return null; } } /** * initialise the magic variables (like CURRENTMONTHNAME) * * @private */ function initialiseVariables() { $fname = 'Parser::initialiseVariables'; wfProfileIn( $fname ); global $wgVariableIDs; $this->mVariables = array(); foreach ( $wgVariableIDs as $id ) { $mw =& MagicWord::get( $id ); $mw->addToArray( $this->mVariables, $id ); } wfProfileOut( $fname ); } /** * parse any parentheses in format ((title|part|part)) * and call callbacks to get a replacement text for any found piece * * @param string $text The text to parse * @param array $callbacks rules in form: * '{' => array( # opening parentheses * 'end' => '}', # closing parentheses * 'cb' => array(2 => callback, # replacement callback to call if {{..}} is found * 4 => callback # replacement callback to call if {{{{..}}}} is found * ) * ) * @private */ function replace_callback ($text, $callbacks) { wfProfileIn( __METHOD__ . '-self' ); $openingBraceStack = array(); # this array will hold a stack of parentheses which are not closed yet $lastOpeningBrace = -1; # last not closed parentheses for ($i = 0; $i < strlen($text); $i++) { # check for any opening brace $rule = null; $nextPos = -1; foreach ($callbacks as $key => $value) { $pos = strpos ($text, $key, $i); if (false !== $pos && (-1 == $nextPos || $pos < $nextPos)) { $rule = $value; $nextPos = $pos; } } if ($lastOpeningBrace >= 0) { $pos = strpos ($text, $openingBraceStack[$lastOpeningBrace]['braceEnd'], $i); if (false !== $pos && (-1 == $nextPos || $pos < $nextPos)){ $rule = null; $nextPos = $pos; } $pos = strpos ($text, '|', $i); if (false !== $pos && (-1 == $nextPos || $pos < $nextPos)){ $rule = null; $nextPos = $pos; } } if ($nextPos == -1) break; $i = $nextPos; # found openning brace, lets add it to parentheses stack if (null != $rule) { $piece = array('brace' => $text[$i], 'braceEnd' => $rule['end'], 'count' => 1, 'title' => '', 'parts' => null); # count openning brace characters while ($i+1 < strlen($text) && $text[$i+1] == $piece['brace']) { $piece['count']++; $i++; } $piece['startAt'] = $i+1; $piece['partStart'] = $i+1; # we need to add to stack only if openning brace count is enough for any given rule foreach ($rule['cb'] as $cnt => $fn) { if ($piece['count'] >= $cnt) { $lastOpeningBrace ++; $openingBraceStack[$lastOpeningBrace] = $piece; break; } } continue; } else if ($lastOpeningBrace >= 0) { # first check if it is a closing brace if ($openingBraceStack[$lastOpeningBrace]['braceEnd'] == $text[$i]) { # lets check if it is enough characters for closing brace $count = 1; while ($i+$count < strlen($text) && $text[$i+$count] == $text[$i]) $count++; # if there are more closing parentheses than opening ones, we parse less if ($openingBraceStack[$lastOpeningBrace]['count'] < $count) $count = $openingBraceStack[$lastOpeningBrace]['count']; # check for maximum matching characters (if there are 5 closing characters, we will probably need only 3 - depending on the rules) $matchingCount = 0; $matchingCallback = null; foreach ($callbacks[$openingBraceStack[$lastOpeningBrace]['brace']]['cb'] as $cnt => $fn) { if ($count >= $cnt && $matchingCount < $cnt) { $matchingCount = $cnt; $matchingCallback = $fn; } } if ($matchingCount == 0) { $i += $count - 1; continue; } # lets set a title or last part (if '|' was found) if (null === $openingBraceStack[$lastOpeningBrace]['parts']) $openingBraceStack[$lastOpeningBrace]['title'] = substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'], $i - $openingBraceStack[$lastOpeningBrace]['partStart']); else $openingBraceStack[$lastOpeningBrace]['parts'][] = substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'], $i - $openingBraceStack[$lastOpeningBrace]['partStart']); $pieceStart = $openingBraceStack[$lastOpeningBrace]['startAt'] - $matchingCount; $pieceEnd = $i + $matchingCount; if( is_callable( $matchingCallback ) ) { $cbArgs = array ( 'text' => substr($text, $pieceStart, $pieceEnd - $pieceStart), 'title' => trim($openingBraceStack[$lastOpeningBrace]['title']), 'parts' => $openingBraceStack[$lastOpeningBrace]['parts'], 'lineStart' => (($pieceStart > 0) && ($text[$pieceStart-1] == "\n")), ); # finally we can call a user callback and replace piece of text wfProfileOut( __METHOD__ . '-self' ); $replaceWith = call_user_func( $matchingCallback, $cbArgs ); wfProfileIn( __METHOD__ . '-self' ); $text = substr($text, 0, $pieceStart) . $replaceWith . substr($text, $pieceEnd); $i = $pieceStart + strlen($replaceWith) - 1; } else { # null value for callback means that parentheses should be parsed, but not replaced $i += $matchingCount - 1; } # reset last openning parentheses, but keep it in case there are unused characters $piece = array('brace' => $openingBraceStack[$lastOpeningBrace]['brace'], 'braceEnd' => $openingBraceStack[$lastOpeningBrace]['braceEnd'], 'count' => $openingBraceStack[$lastOpeningBrace]['count'], 'title' => '', 'parts' => null, 'startAt' => $openingBraceStack[$lastOpeningBrace]['startAt']); $openingBraceStack[$lastOpeningBrace--] = null; if ($matchingCount < $piece['count']) { $piece['count'] -= $matchingCount; $piece['startAt'] -= $matchingCount; $piece['partStart'] = $piece['startAt']; # do we still qualify for any callback with remaining count? foreach ($callbacks[$piece['brace']]['cb'] as $cnt => $fn) { if ($piece['count'] >= $cnt) { $lastOpeningBrace ++; $openingBraceStack[$lastOpeningBrace] = $piece; break; } } } continue; } # lets set a title if it is a first separator, or next part otherwise if ($text[$i] == '|') { if (null === $openingBraceStack[$lastOpeningBrace]['parts']) { $openingBraceStack[$lastOpeningBrace]['title'] = substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'], $i - $openingBraceStack[$lastOpeningBrace]['partStart']); $openingBraceStack[$lastOpeningBrace]['parts'] = array(); } else $openingBraceStack[$lastOpeningBrace]['parts'][] = substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'], $i - $openingBraceStack[$lastOpeningBrace]['partStart']); $openingBraceStack[$lastOpeningBrace]['partStart'] = $i + 1; } } } wfProfileOut( __METHOD__ . '-self' ); return $text; } /** * Replace magic variables, templates, and template arguments * with the appropriate text. Templates are substituted recursively, * taking care to avoid infinite loops. * * Note that the substitution depends on value of $mOutputType: * OT_WIKI: only {{subst:}} templates * OT_MSG: only magic variables * OT_HTML: all templates and magic variables * * @param string $tex The text to transform * @param array $args Key-value pairs representing template parameters to substitute * @param bool $argsOnly Only do argument (triple-brace) expansion, not double-brace expansion * @private */ function replaceVariables( $text, $args = array(), $argsOnly = false ) { # Prevent too big inclusions if( strlen( $text ) > MAX_INCLUDE_SIZE ) { return $text; } $fname = 'Parser::replaceVariables'; wfProfileIn( $fname ); # This function is called recursively. To keep track of arguments we need a stack: array_push( $this->mArgStack, $args ); $braceCallbacks = array(); if ( !$argsOnly ) { $braceCallbacks[2] = array( &$this, 'braceSubstitution' ); } if ( $this->mOutputType == OT_HTML || $this->mOutputType == OT_WIKI ) { $braceCallbacks[3] = array( &$this, 'argSubstitution' ); } $callbacks = array(); $callbacks['{'] = array('end' => '}', 'cb' => $braceCallbacks); $callbacks['['] = array('end' => ']', 'cb' => array(2=>null)); $text = $this->replace_callback ($text, $callbacks); array_pop( $this->mArgStack ); wfProfileOut( $fname ); return $text; } /** * Replace magic variables * @private */ function variableSubstitution( $matches ) { $fname = 'Parser::variableSubstitution'; $varname = $matches[1]; wfProfileIn( $fname ); $skip = false; if ( $this->mOutputType == OT_WIKI ) { # Do only magic variables prefixed by SUBST $mwSubst =& MagicWord::get( MAG_SUBST ); if (!$mwSubst->matchStartAndRemove( $varname )) $skip = true; # Note that if we don't substitute the variable below, # we don't remove the {{subst:}} magic word, in case # it is a template rather than a magic variable. } if ( !$skip && array_key_exists( $varname, $this->mVariables ) ) { $id = $this->mVariables[$varname]; $text = $this->getVariableValue( $id ); $this->mOutput->mContainsOldMagic = true; } else { $text = $matches[0]; } wfProfileOut( $fname ); return $text; } # Split template arguments function getTemplateArgs( $argsString ) { if ( $argsString === '' ) { return array(); } $args = explode( '|', substr( $argsString, 1 ) ); # If any of the arguments contains a '[[' but no ']]', it needs to be # merged with the next arg because the '|' character between belongs # to the link syntax and not the template parameter syntax. $argc = count($args); for ( $i = 0; $i < $argc-1; $i++ ) { if ( substr_count ( $args[$i], '[[' ) != substr_count ( $args[$i], ']]' ) ) { $args[$i] .= '|'.$args[$i+1]; array_splice($args, $i+1, 1); $i--; $argc--; } } return $args; } /** * Return the text of a template, after recursively * replacing any variables or templates within the template. * * @param array $piece The parts of the template * $piece['text']: matched text * $piece['title']: the title, i.e. the part before the | * $piece['parts']: the parameter array * @return string the text of the template * @private */ function braceSubstitution( $piece ) { global $wgContLang, $wgLang, $wgAllowDisplayTitle, $action; $fname = 'Parser::braceSubstitution'; wfProfileIn( $fname ); # Flags $found = false; # $text has been filled $nowiki = false; # wiki markup in $text should be escaped $noparse = false; # Unsafe HTML tags should not be stripped, etc. $noargs = false; # Don't replace triple-brace arguments in $text $replaceHeadings = false; # Make the edit section links go to the template not the article $isHTML = false; # $text is HTML, armour it against wikitext transformation $forceRawInterwiki = false; # Force interwiki transclusion to be done in raw mode not rendered # Title object, where $text came from $title = NULL; $linestart = ''; # $part1 is the bit before the first |, and must contain only title characters # $args is a list of arguments, starting from index 0, not including $part1 $part1 = $piece['title']; # If the third subpattern matched anything, it will start with | if (null == $piece['parts']) { $replaceWith = $this->variableSubstitution (array ($piece['text'], $piece['title'])); if ($replaceWith != $piece['text']) { $text = $replaceWith; $found = true; $noparse = true; $noargs = true; } } $args = (null == $piece['parts']) ? array() : $piece['parts']; $argc = count( $args ); # SUBST if ( !$found ) { $mwSubst =& MagicWord::get( MAG_SUBST ); if ( $mwSubst->matchStartAndRemove( $part1 ) xor ($this->mOutputType == OT_WIKI) ) { # One of two possibilities is true: # 1) Found SUBST but not in the PST phase # 2) Didn't find SUBST and in the PST phase # In either case, return without further processing $text = $piece['text']; $found = true; $noparse = true; $noargs = true; } } # MSG, MSGNW, INT and RAW if ( !$found ) { # Check for MSGNW: $mwMsgnw =& MagicWord::get( MAG_MSGNW ); if ( $mwMsgnw->matchStartAndRemove( $part1 ) ) { $nowiki = true; } else { # Remove obsolete MSG: $mwMsg =& MagicWord::get( MAG_MSG ); $mwMsg->matchStartAndRemove( $part1 ); } # Check for RAW: $mwRaw =& MagicWord::get( MAG_RAW ); if ( $mwRaw->matchStartAndRemove( $part1 ) ) { $forceRawInterwiki = true; } # Check if it is an internal message $mwInt =& MagicWord::get( MAG_INT ); if ( $mwInt->matchStartAndRemove( $part1 ) ) { if ( $this->incrementIncludeCount( 'int:'.$part1 ) ) { $text = $linestart . wfMsgReal( $part1, $args, true ); $found = true; } } } # Parser functions if ( !$found ) { wfProfileIn( __METHOD__ . '-pfunc' ); $colonPos = strpos( $part1, ':' ); if ( $colonPos !== false ) { # Case sensitive functions $function = substr( $part1, 0, $colonPos ); if ( isset( $this->mFunctionSynonyms[1][$function] ) ) { $function = $this->mFunctionSynonyms[1][$function]; } else { # Case insensitive functions $function = strtolower( $function ); if ( isset( $this->mFunctionSynonyms[0][$function] ) ) { $function = $this->mFunctionSynonyms[0][$function]; } else { $function = false; } } if ( $function ) { $funcArgs = array_map( 'trim', $args ); $funcArgs = array_merge( array( &$this, trim( substr( $part1, $colonPos + 1 ) ) ), $funcArgs ); $result = call_user_func_array( $this->mFunctionHooks[$function], $funcArgs ); $found = true; // The text is usually already parsed, doesn't need triple-brace tags expanded, etc. //$noargs = true; //$noparse = true; if ( is_array( $result ) ) { if ( isset( $result[0] ) ) { $text = $linestart . $result[0]; unset( $result[0] ); } // Extract flags into the local scope // This allows callers to set flags such as nowiki, noparse, found, etc. extract( $result ); } else { $text = $linestart . $result; } } } wfProfileOut( __METHOD__ . '-pfunc' ); } # Template table test # Did we encounter this template already? If yes, it is in the cache # and we need to check for loops. if ( !$found && isset( $this->mTemplates[$piece['title']] ) ) { $found = true; # Infinite loop test if ( isset( $this->mTemplatePath[$part1] ) ) { $noparse = true; $noargs = true; $found = true; $text = $linestart . '{{' . $part1 . '}}' . ''; wfDebug( "$fname: template loop broken at '$part1'\n" ); } else { # set $text to cached message. $text = $linestart . $this->mTemplates[$piece['title']]; } } # Load from database $lastPathLevel = $this->mTemplatePath; if ( !$found ) { wfProfileIn( __METHOD__ . '-loadtpl' ); $ns = NS_TEMPLATE; # declaring $subpage directly in the function call # does not work correctly with references and breaks # {{/subpage}}-style inclusions $subpage = ''; $part1 = $this->maybeDoSubpageLink( $part1, $subpage ); if ($subpage !== '') { $ns = $this->mTitle->getNamespace(); } $title = Title::newFromText( $part1, $ns ); if ( !is_null( $title ) ) { $checkVariantLink = sizeof($wgContLang->getVariants())>1; # Check for language variants if the template is not found if($checkVariantLink && $title->getArticleID() == 0){ $wgContLang->findVariantLink($part1, $title); } if ( !$title->isExternal() ) { # Check for excessive inclusion $dbk = $title->getPrefixedDBkey(); if ( $this->incrementIncludeCount( $dbk ) ) { if ( $title->getNamespace() == NS_SPECIAL && $this->mOptions->getAllowSpecialInclusion() && $this->mOutputType != OT_WIKI ) { $text = SpecialPage::capturePath( $title ); if ( is_string( $text ) ) { $found = true; $noparse = true; $noargs = true; $isHTML = true; $this->disableCache(); } } else { $articleContent = $this->fetchTemplate( $title ); if ( $articleContent !== false ) { $found = true; $text = $articleContent; $replaceHeadings = true; } } } # If the title is valid but undisplayable, make a link to it if ( $this->mOutputType == OT_HTML && !$found ) { $text = '[['.$title->getPrefixedText().']]'; $found = true; } } elseif ( $title->isTrans() ) { // Interwiki transclusion if ( $this->mOutputType == OT_HTML && !$forceRawInterwiki ) { $text = $this->interwikiTransclude( $title, 'render' ); $isHTML = true; $noparse = true; } else { $text = $this->interwikiTransclude( $title, 'raw' ); $replaceHeadings = true; } $found = true; } # Template cache array insertion # Use the original $piece['title'] not the mangled $part1, so that # modifiers such as RAW: produce separate cache entries if( $found ) { if( $isHTML ) { // A special page; don't store it in the template cache. } else { $this->mTemplates[$piece['title']] = $text; } $text = $linestart . $text; } } wfProfileOut( __METHOD__ . '-loadtpl' ); } # Recursive parsing, escaping and link table handling # Only for HTML output if ( $nowiki && $found && $this->mOutputType == OT_HTML ) { $text = wfEscapeWikiText( $text ); } elseif ( ($this->mOutputType == OT_HTML || $this->mOutputType == OT_WIKI) && $found ) { if ( $noargs ) { $assocArgs = array(); } else { # Clean up argument array $assocArgs = array(); $index = 1; foreach( $args as $arg ) { $eqpos = strpos( $arg, '=' ); if ( $eqpos === false ) { $assocArgs[$index++] = $arg; } else { $name = trim( substr( $arg, 0, $eqpos ) ); $value = trim( substr( $arg, $eqpos+1 ) ); if ( $value === false ) { $value = ''; } if ( $name !== false ) { $assocArgs[$name] = $value; } } } # Add a new element to the templace recursion path $this->mTemplatePath[$part1] = 1; } if ( !$noparse ) { # If there are any tags, only include them if ( in_string( '', $text ) && in_string( '', $text ) ) { preg_match_all( '/(.*?)\n?<\/onlyinclude>/s', $text, $m ); $text = ''; foreach ($m[1] as $piece) $text .= $piece; } # Remove sections and tags $text = preg_replace( '/.*?<\/noinclude>/s', '', $text ); $text = strtr( $text, array( '' => '' , '' => '' ) ); if( $this->mOutputType == OT_HTML ) { # Strip ,

, etc.
					$text = $this->strip( $text, $this->mStripState );
					$text = Sanitizer::removeHTMLtags( $text, array( &$this, 'replaceVariables' ), $assocArgs );
				}
				$text = $this->replaceVariables( $text, $assocArgs );

				# If the template begins with a table or block-level
				# element, it should be treated as beginning a new line.
				if (!$piece['lineStart'] && preg_match('/^({\\||:|;|#|\*)/', $text)) {
					$text = "\n" . $text;
				}
			} elseif ( !$noargs ) {
				# $noparse and !$noargs
				# Just replace the arguments, not any double-brace items
				# This is used for rendered interwiki transclusion
				$text = $this->replaceVariables( $text, $assocArgs, true );
			}
		}
		# Prune lower levels off the recursion check path
		$this->mTemplatePath = $lastPathLevel;

		if ( !$found ) {
			wfProfileOut( $fname );
			return $piece['text'];
		} else {
			wfProfileIn( __METHOD__ . '-placeholders' );
			if ( $isHTML ) {
				# Replace raw HTML by a placeholder
				# Add a blank line preceding, to prevent it from mucking up
				# immediately preceding headings
				$text = "\n\n" . $this->insertStripItem( $text, $this->mStripState );
			} else {
				# replace ==section headers==
				# XXX this needs to go away once we have a better parser.
				if ( $this->mOutputType != OT_WIKI && $replaceHeadings ) {
					if( !is_null( $title ) )
						$encodedname = base64_encode($title->getPrefixedDBkey());
					else
						$encodedname = base64_encode("");
					$m = preg_split('/(^={1,6}.*?={1,6}\s*?$)/m', $text, -1,
						PREG_SPLIT_DELIM_CAPTURE);
					$text = '';
					$nsec = 0;
					for( $i = 0; $i < count($m); $i += 2 ) {
						$text .= $m[$i];
						if (!isset($m[$i + 1]) || $m[$i + 1] == "") continue;
						$hl = $m[$i + 1];
						if( strstr($hl, "" . $m2[3];

						$nsec++;
					}
				}
			}
			wfProfileOut( __METHOD__ . '-placeholders' );
		}

		# Prune lower levels off the recursion check path
		$this->mTemplatePath = $lastPathLevel;

		if ( !$found ) {
			wfProfileOut( $fname );
			return $piece['text'];
		} else {
			wfProfileOut( $fname );
			return $text;
		}
	}

	/**
	 * Fetch the unparsed text of a template and register a reference to it.
	 */
	function fetchTemplate( $title ) {
		$text = false;
		// Loop to fetch the article, with up to 1 redirect
		for ( $i = 0; $i < 2 && is_object( $title ); $i++ ) {
			$rev = Revision::newFromTitle( $title );
			$this->mOutput->addTemplate( $title, $title->getArticleID() );
			if ( !$rev ) {
				break;
			}
			$text = $rev->getText();
			if ( $text === false ) {
				break;
			}
			// Redirect?
			$title = Title::newFromRedirect( $text );
		}
		return $text;
	}

	/**
	 * Transclude an interwiki link.
	 */
	function interwikiTransclude( $title, $action ) {
		global $wgEnableScaryTranscluding, $wgCanonicalNamespaceNames;

		if (!$wgEnableScaryTranscluding)
			return wfMsg('scarytranscludedisabled');

		// The namespace will actually only be 0 or 10, depending on whether there was a leading :
		// But we'll handle it generally anyway
		if ( $title->getNamespace() ) {
			// Use the canonical namespace, which should work anywhere
			$articleName = $wgCanonicalNamespaceNames[$title->getNamespace()] . ':' . $title->getDBkey();
		} else {
			$articleName = $title->getDBkey();
		}

		$url = str_replace('$1', urlencode($articleName), Title::getInterwikiLink($title->getInterwiki()));
		$url .= "?action=$action";
		if (strlen($url) > 255)
			return wfMsg('scarytranscludetoolong');
		return $this->fetchScaryTemplateMaybeFromCache($url);
	}

	function fetchScaryTemplateMaybeFromCache($url) {
		global $wgTranscludeCacheExpiry;
		$dbr =& wfGetDB(DB_SLAVE);
		$obj = $dbr->selectRow('transcache', array('tc_time', 'tc_contents'),
				array('tc_url' => $url));
		if ($obj) {
			$time = $obj->tc_time;
			$text = $obj->tc_contents;
			if ($time && time() < $time + $wgTranscludeCacheExpiry ) {
				return $text;
			}
		}

		$text = Http::get($url);
		if (!$text)
			return wfMsg('scarytranscludefailed', $url);

		$dbw =& wfGetDB(DB_MASTER);
		$dbw->replace('transcache', array('tc_url'), array(
			'tc_url' => $url,
			'tc_time' => time(),
			'tc_contents' => $text));
		return $text;
	}


	/**
	 * Triple brace replacement -- used for template arguments
	 * @private
	 */
	function argSubstitution( $matches ) {
		$arg = trim( $matches['title'] );
		$text = $matches['text'];
		$inputArgs = end( $this->mArgStack );

		if ( array_key_exists( $arg, $inputArgs ) ) {
			$text = $inputArgs[$arg];
		} else if ($this->mOutputType == OT_HTML && null != $matches['parts'] && count($matches['parts']) > 0) {
			$text = $matches['parts'][0];
		}

		return $text;
	}

	/**
	 * Returns true if the function is allowed to include this entity
	 * @private
	 */
	function incrementIncludeCount( $dbk ) {
		if ( !array_key_exists( $dbk, $this->mIncludeCount ) ) {
			$this->mIncludeCount[$dbk] = 0;
		}
		if ( ++$this->mIncludeCount[$dbk] <= MAX_INCLUDE_REPEAT ) {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * Detect __NOGALLERY__ magic word and set a placeholder
	 */
	function stripNoGallery( &$text ) {
		# if the string __NOGALLERY__ (not case-sensitive) occurs in the HTML,
		# do not add TOC
		$mw = MagicWord::get( MAG_NOGALLERY );
		$this->mOutput->mNoGallery = $mw->matchAndRemove( $text ) ;
	}

	/**
	 * Detect __TOC__ magic word and set a placeholder
	 */
	function stripToc( $text ) {
		# if the string __NOTOC__ (not case-sensitive) occurs in the HTML,
		# do not add TOC
		$mw = MagicWord::get( MAG_NOTOC );
		if( $mw->matchAndRemove( $text ) ) {
			$this->mShowToc = false;
		}
		
		$mw = MagicWord::get( MAG_TOC );
		if( $mw->match( $text ) ) {
			$this->mShowToc = true;
			$this->mForceTocPosition = true;
			
			// Set a placeholder. At the end we'll fill it in with the TOC.
			$text = $mw->replace( '', $text, 1 );
			
			// Only keep the first one.
			$text = $mw->replace( '', $text );
		}
		return $text;
	}

	/**
	 * This function accomplishes several tasks:
	 * 1) Auto-number headings if that option is enabled
	 * 2) Add an [edit] link to sections for logged in users who have enabled the option
	 * 3) Add a Table of contents on the top for users who have enabled the option
	 * 4) Auto-anchor headings
	 *
	 * It loops through all headlines, collects the necessary data, then splits up the
	 * string and re-inserts the newly formatted headlines.
	 *
	 * @param string $text
	 * @param boolean $isMain
	 * @private
	 */
	function formatHeadings( $text, $isMain=true ) {
		global $wgMaxTocLevel, $wgContLang;

		$doNumberHeadings = $this->mOptions->getNumberHeadings();
		if( !$this->mTitle->userCanEdit() ) {
			$showEditLink = 0;
		} else {
			$showEditLink = $this->mOptions->getEditSection();
		}

		# Inhibit editsection links if requested in the page
		$esw =& MagicWord::get( MAG_NOEDITSECTION );
		if( $esw->matchAndRemove( $text ) ) {
			$showEditLink = 0;
		}

		# Get all headlines for numbering them and adding funky stuff like [edit]
		# links - this is for later, but we need the number of headlines right now
		$numMatches = preg_match_all( '/)(.*?)<\/H[1-6] *>/i', $text, $matches );

		# if there are fewer than 4 headlines in the article, do not show TOC
		# unless it's been explicitly enabled.
		$enoughToc = $this->mShowToc &&
			(($numMatches >= 4) || $this->mForceTocPosition);

		# Allow user to stipulate that a page should have a "new section"
		# link added via __NEWSECTIONLINK__
		$mw =& MagicWord::get( MAG_NEWSECTIONLINK );
		if( $mw->matchAndRemove( $text ) )
			$this->mOutput->setNewSection( true );

		# if the string __FORCETOC__ (not case-sensitive) occurs in the HTML,
		# override above conditions and always show TOC above first header
		$mw =& MagicWord::get( MAG_FORCETOC );
		if ($mw->matchAndRemove( $text ) ) {
			$this->mShowToc = true;
			$enoughToc = true;
		}

		# Never ever show TOC if no headers
		if( $numMatches < 1 ) {
			$enoughToc = false;
		}

		# We need this to perform operations on the HTML
		$sk =& $this->mOptions->getSkin();

		# headline counter
		$headlineCount = 0;
		$sectionCount = 0; # headlineCount excluding template sections

		# Ugh .. the TOC should have neat indentation levels which can be
		# passed to the skin functions. These are determined here
		$toc = '';
		$full = '';
		$head = array();
		$sublevelCount = array();
		$levelCount = array();
		$toclevel = 0;
		$level = 0;
		$prevlevel = 0;
		$toclevel = 0;
		$prevtoclevel = 0;

		foreach( $matches[3] as $headline ) {
			$istemplate = 0;
			$templatetitle = '';
			$templatesection = 0;
			$numbering = '';

			if (preg_match("//", $headline, $mat)) {
				$istemplate = 1;
				$templatetitle = base64_decode($mat[1]);
				$templatesection = 1 + (int)base64_decode($mat[2]);
				$headline = preg_replace("//", "", $headline);
			}

			if( $toclevel ) {
				$prevlevel = $level;
				$prevtoclevel = $toclevel;
			}
			$level = $matches[1][$headlineCount];

			if( $doNumberHeadings || $enoughToc ) {

				if ( $level > $prevlevel ) {
					# Increase TOC level
					$toclevel++;
					$sublevelCount[$toclevel] = 0;
					if( $toclevel<$wgMaxTocLevel ) {
						$toc .= $sk->tocIndent();
					}
				}
				elseif ( $level < $prevlevel && $toclevel > 1 ) {
					# Decrease TOC level, find level to jump to

					if ( $toclevel == 2 && $level <= $levelCount[1] ) {
						# Can only go down to level 1
						$toclevel = 1;
					} else {
						for ($i = $toclevel; $i > 0; $i--) {
							if ( $levelCount[$i] == $level ) {
								# Found last matching level
								$toclevel = $i;
								break;
							}
							elseif ( $levelCount[$i] < $level ) {
								# Found first matching level below current level
								$toclevel = $i + 1;
								break;
							}
						}
					}
					if( $toclevel<$wgMaxTocLevel ) {
						$toc .= $sk->tocUnindent( $prevtoclevel - $toclevel );
					}
				}
				else {
					# No change in level, end TOC line
					if( $toclevel<$wgMaxTocLevel ) {
						$toc .= $sk->tocLineEnd();
					}
				}

				$levelCount[$toclevel] = $level;

				# count number of headlines for each level
				@$sublevelCount[$toclevel]++;
				$dot = 0;
				for( $i = 1; $i <= $toclevel; $i++ ) {
					if( !empty( $sublevelCount[$i] ) ) {
						if( $dot ) {
							$numbering .= '.';
						}
						$numbering .= $wgContLang->formatNum( $sublevelCount[$i] );
						$dot = 1;
					}
				}
			}

			# The canonized header is a version of the header text safe to use for links
			# Avoid insertion of weird stuff like  by expanding the relevant sections
			$canonized_headline = $this->unstrip( $headline, $this->mStripState );
			$canonized_headline = $this->unstripNoWiki( $canonized_headline, $this->mStripState );

			# Remove link placeholders by the link text.
			#     
			# turns into
			#     link text with suffix
			$canonized_headline = preg_replace( '//e',
							    "\$this->mLinkHolders['texts'][\$1]",
							    $canonized_headline );
			$canonized_headline = preg_replace( '//e',
							    "\$this->mInterwikiLinkHolders['texts'][\$1]",
							    $canonized_headline );

			# strip out HTML
			$canonized_headline = preg_replace( '/<.*?' . '>/','',$canonized_headline );
			$tocline = trim( $canonized_headline );
			# Save headline for section edit hint before it's escaped
			$headline_hint = trim( $canonized_headline );
			$canonized_headline = Sanitizer::escapeId( $tocline );
			$refers[$headlineCount] = $canonized_headline;

			# count how many in assoc. array so we can track dupes in anchors
			@$refers[$canonized_headline]++;
			$refcount[$headlineCount]=$refers[$canonized_headline];

			# Don't number the heading if it is the only one (looks silly)
			if( $doNumberHeadings && count( $matches[3] ) > 1) {
				# the two are different if the line contains a link
				$headline=$numbering . ' ' . $headline;
			}

			# Create the anchor for linking from the TOC to the section
			$anchor = $canonized_headline;
			if($refcount[$headlineCount] > 1 ) {
				$anchor .= '_' . $refcount[$headlineCount];
			}
			if( $enoughToc && ( !isset($wgMaxTocLevel) || $toclevel<$wgMaxTocLevel ) ) {
				$toc .= $sk->tocLine($anchor, $tocline, $numbering, $toclevel);
			}
			if( $showEditLink && ( !$istemplate || $templatetitle !== "" ) ) {
				if ( empty( $head[$headlineCount] ) ) {
					$head[$headlineCount] = '';
				}
				if( $istemplate )
					$head[$headlineCount] .= $sk->editSectionLinkForOther($templatetitle, $templatesection);
				else
					$head[$headlineCount] .= $sk->editSectionLink($this->mTitle, $sectionCount+1, $headline_hint);
			}

			# give headline the correct  tag
			@$head[$headlineCount] .= "';

			$headlineCount++;
			if( !$istemplate )
				$sectionCount++;
		}

		if( $enoughToc ) {
			if( $toclevel<$wgMaxTocLevel ) {
				$toc .= $sk->tocUnindent( $toclevel - 1 );
			}
			$toc = $sk->tocList( $toc );
		}

		# split up and insert constructed headlines

		$blocks = preg_split( '/.*?<\/H[1-6]>/i', $text );
		$i = 0;

		foreach( $blocks as $block ) {
			if( $showEditLink && $headlineCount > 0 && $i == 0 && $block != "\n" ) {
				# This is the [edit] link that appears for the top block of text when
				# section editing is enabled

				# Disabled because it broke block formatting
				# For example, a bullet point in the top line
				# $full .= $sk->editSectionLink(0);
			}
			$full .= $block;
			if( $enoughToc && !$i && $isMain && !$this->mForceTocPosition ) {
				# Top anchor now in skin
				$full = $full.$toc;
			}

			if( !empty( $head[$i] ) ) {
				$full .= $head[$i];
			}
			$i++;
		}
		if( $this->mForceTocPosition ) {
			return str_replace( '', $toc, $full );
		} else {
			return $full;
		}
	}

	/**
	 * Return an HTML link for the "ISBN 123456" text
	 * @private
	 */
	function magicISBN( $text ) {
		$fname = 'Parser::magicISBN';
		wfProfileIn( $fname );

		$a = split( 'ISBN ', ' '.$text );
		if ( count ( $a ) < 2 ) {
			wfProfileOut( $fname );
			return $text;
		}
		$text = substr( array_shift( $a ), 1);
		$valid = '0123456789-Xx';

		foreach ( $a as $x ) {
			# hack: don't replace inside thumbnail title/alt
			# attributes
			if(preg_match('/<[^>]+(alt|title)="[^">]*$/', $text)) {
				$text .= "ISBN $x";
				continue;
			}

			$isbn = $blank = '' ;
			while ( $x !== '' && ' ' == $x{0} ) {
				$blank .= ' ';
				$x = substr( $x, 1 );
			}
			if ( $x == '' ) { # blank isbn
				$text .= "ISBN $blank";
				continue;
			}
			while ( strstr( $valid, $x{0} ) != false ) {
				$isbn .= $x{0};
				$x = substr( $x, 1 );
			}
			$num = str_replace( '-', '', $isbn );
			$num = str_replace( ' ', '', $num );
			$num = str_replace( 'x', 'X', $num );

			if ( '' == $num ) {
				$text .= "ISBN $blank$x";
			} else {
				$titleObj = Title::makeTitle( NS_SPECIAL, 'Booksources' );
				$text .= 'ISBN $isbn";
				$text .= $x;
			}
		}
		wfProfileOut( $fname );
		return $text;
	}

	/**
	 * Return an HTML link for the "RFC 1234" text
	 *
	 * @private
	 * @param string $text     Text to be processed
	 * @param string $keyword  Magic keyword to use (default RFC)
	 * @param string $urlmsg   Interface message to use (default rfcurl)
	 * @return string
	 */
	function magicRFC( $text, $keyword='RFC ', $urlmsg='rfcurl'  ) {

		$valid = '0123456789';
		$internal = false;

		$a = split( $keyword, ' '.$text );
		if ( count ( $a ) < 2 ) {
			return $text;
		}
		$text = substr( array_shift( $a ), 1);

		/* Check if keyword is preceed by [[.
		 * This test is made here cause of the array_shift above
		 * that prevent the test to be done in the foreach.
		 */
		if ( substr( $text, -2 ) == '[[' ) {
			$internal = true;
		}

		foreach ( $a as $x ) {
			/* token might be empty if we have RFC RFC 1234 */
			if ( $x=='' ) {
				$text.=$keyword;
				continue;
				}

			# hack: don't replace inside thumbnail title/alt
			# attributes
			if(preg_match('/<[^>]+(alt|title)="[^">]*$/', $text)) {
				$text .= $keyword . $x;
				continue;
			}
			
			$id = $blank = '' ;

			/** remove and save whitespaces in $blank */
			while ( $x{0} == ' ' ) {
				$blank .= ' ';
				$x = substr( $x, 1 );
			}

			/** remove and save the rfc number in $id */
			while ( strstr( $valid, $x{0} ) != false ) {
				$id .= $x{0};
				$x = substr( $x, 1 );
			}

			if ( $id == '' ) {
				/* call back stripped spaces*/
				$text .= $keyword.$blank.$x;
			} elseif( $internal ) {
				/* normal link */
				$text .= $keyword.$id.$x;
			} else {
				/* build the external link*/
				$url = wfMsg( $urlmsg, $id);
				$sk =& $this->mOptions->getSkin();
				$la = $sk->getExternalLinkAttributes( $url, $keyword.$id );
				$text .= "{$keyword}{$id}{$x}";
			}

			/* Check if the next RFC keyword is preceed by [[ */
			$internal = ( substr($x,-2) == '[[' );
		}
		return $text;
	}

	/**
	 * Transform wiki markup when saving a page by doing \r\n -> \n
	 * conversion, substitting signatures, {{subst:}} templates, etc.
	 *
	 * @param string $text the text to transform
	 * @param Title &$title the Title object for the current article
	 * @param User &$user the User object describing the current user
	 * @param ParserOptions $options parsing options
	 * @param bool $clearState whether to clear the parser state first
	 * @return string the altered wiki markup
	 * @public
	 */
	function preSaveTransform( $text, &$title, &$user, $options, $clearState = true ) {
		$this->mOptions = $options;
		$this->mTitle =& $title;
		$this->mOutputType = OT_WIKI;

		if ( $clearState ) {
			$this->clearState();
		}

		$stripState = false;
		$pairs = array(
			"\r\n" => "\n",
		);
		$text = str_replace( array_keys( $pairs ), array_values( $pairs ), $text );
		$text = $this->strip( $text, $stripState, true, array( 'gallery' ) );
		$text = $this->pstPass2( $text, $stripState, $user );
		$text = $this->unstrip( $text, $stripState );
		$text = $this->unstripNoWiki( $text, $stripState );
		return $text;
	}

	/**
	 * Pre-save transform helper function
	 * @private
	 */
	function pstPass2( $text, &$stripState, &$user ) {
		global $wgContLang, $wgLocaltimezone;

		/* Note: This is the timestamp saved as hardcoded wikitext to
		 * the database, we use $wgContLang here in order to give
		 * everyone the same signature and use the default one rather
		 * than the one selected in each user's preferences.
		 */
		if ( isset( $wgLocaltimezone ) ) {
			$oldtz = getenv( 'TZ' );
			putenv( 'TZ='.$wgLocaltimezone );
		}
		$d = $wgContLang->timeanddate( date( 'YmdHis' ), false, false) .
		  ' (' . date( 'T' ) . ')';
		if ( isset( $wgLocaltimezone ) ) {
			putenv( 'TZ='.$oldtz );
		}

		# Variable replacement
		# Because mOutputType is OT_WIKI, this will only process {{subst:xxx}} type tags
		$text = $this->replaceVariables( $text );
		
		# Strip out  etc. added via replaceVariables
		$text = $this->strip( $text, $stripState, false, array( 'gallery' ) );
	
		# Signatures
		$sigText = $this->getUserSig( $user );
		$text = strtr( $text, array(
			'~~~~~' => $d,
			'~~~~' => "$sigText $d",
			'~~~' => $sigText
		) );

		# Context links: [[|name]] and [[name (context)|]]
		#
		global $wgLegalTitleChars;
		$tc = "[$wgLegalTitleChars]";
		$np = str_replace( array( '(', ')' ), array( '', '' ), $tc ); # No parens

		$namespacechar = '[ _0-9A-Za-z\x80-\xff]'; # Namespaces can use non-ascii!
		$conpat = "/^({$np}+) \\(({$tc}+)\\)$/";

		$p1 = "/\[\[({$np}+) \\(({$np}+)\\)\\|]]/";		# [[page (context)|]]
		$p2 = "/\[\[\\|({$tc}+)]]/";					# [[|page]]
		$p3 = "/\[\[(:*$namespacechar+):({$np}+)\\|]]/";		# [[namespace:page|]] and [[:namespace:page|]]
		$p4 = "/\[\[(:*$namespacechar+):({$np}+) \\(({$np}+)\\)\\|]]/"; # [[ns:page (cont)|]] and [[:ns:page (cont)|]]
		$context = '';
		$t = $this->mTitle->getText();
		if ( preg_match( $conpat, $t, $m ) ) {
			$context = $m[2];
		}
		$text = preg_replace( $p4, '[[\\1:\\2 (\\3)|\\2]]', $text );
		$text = preg_replace( $p1, '[[\\1 (\\2)|\\1]]', $text );
		$text = preg_replace( $p3, '[[\\1:\\2|\\2]]', $text );

		if ( '' == $context ) {
			$text = preg_replace( $p2, '[[\\1]]', $text );
		} else {
			$text = preg_replace( $p2, "[[\\1 ({$context})|\\1]]", $text );
		}

		# Trim trailing whitespace
		# MAG_END (__END__) tag allows for trailing
		# whitespace to be deliberately included
		$text = rtrim( $text );
		$mw =& MagicWord::get( MAG_END );
		$mw->matchAndRemove( $text );

		return $text;
	}

	/**
	 * Fetch the user's signature text, if any, and normalize to
	 * validated, ready-to-insert wikitext.
	 *
	 * @param User $user
	 * @return string
	 * @private
	 */
	function getUserSig( &$user ) {
		$username = $user->getName();
		$nickname = $user->getOption( 'nickname' );
		$nickname = $nickname === '' ? $username : $nickname;
	
		if( $user->getBoolOption( 'fancysig' ) !== false ) {
			# Sig. might contain markup; validate this
			if( $this->validateSig( $nickname ) !== false ) {
				# Validated; clean up (if needed) and return it
				return $this->cleanSig( $nickname, true );
			} else {
				# Failed to validate; fall back to the default
				$nickname = $username;
				wfDebug( "Parser::getUserSig: $username has bad XML tags in signature.\n" );
			}
		}

		// Make sure nickname doesnt get a sig in a sig
		$nickname = $this->cleanSigInSig( $nickname );

		# If we're still here, make it a link to the user page
		$userpage = $user->getUserPage();
		return( '[[' . $userpage->getPrefixedText() . '|' . wfEscapeWikiText( $nickname ) . ']]' );
	}

	/**
	 * Check that the user's signature contains no bad XML
	 *
	 * @param string $text
	 * @return mixed An expanded string, or false if invalid.
	 */
	function validateSig( $text ) {
		return( wfIsWellFormedXmlFragment( $text ) ? $text : false );
	}
	
	/**
	 * Clean up signature text
	 *
	 * 1) Strip ~~~, ~~~~ and ~~~~~ out of signatures @see cleanSigInSig
	 * 2) Substitute all transclusions
	 *
	 * @param string $text
	 * @param $parsing Whether we're cleaning (preferences save) or parsing
	 * @return string Signature text
	 */
	function cleanSig( $text, $parsing = false ) {
		global $wgTitle;
		$this->startExternalParse( $wgTitle, new ParserOptions(), $parsing ? OT_WIKI : OT_MSG );
	
		$substWord = MagicWord::get( MAG_SUBST );
		$substRegex = '/\{\{(?!(?:' . $substWord->getBaseRegex() . '))/x' . $substWord->getRegexCase();
		$substText = '{{' . $substWord->getSynonym( 0 );

		$text = preg_replace( $substRegex, $substText, $text );
		$text = $this->cleanSigInSig( $text );
		$text = $this->replaceVariables( $text );
		
		$this->clearState();	
		return $text;
	}

	/**
	 * Strip ~~~, ~~~~ and ~~~~~ out of signatures
	 * @param string $text
	 * @return string Signature text with /~{3,5}/ removed
	 */
	function cleanSigInSig( $text ) {
		$text = preg_replace( '/~{3,5}/', '', $text );
		return $text;
	}
	
	/**
	 * Set up some variables which are usually set up in parse()
	 * so that an external function can call some class members with confidence
	 * @public
	 */
	function startExternalParse( &$title, $options, $outputType, $clearState = true ) {
		$this->mTitle =& $title;
		$this->mOptions = $options;
		$this->mOutputType = $outputType;
		if ( $clearState ) {
			$this->clearState();
		}
	}

	/**
	 * Transform a MediaWiki message by replacing magic variables.
	 *
	 * @param string $text the text to transform
	 * @param ParserOptions $options  options
	 * @return string the text with variables substituted
	 * @public
	 */
	function transformMsg( $text, $options ) {
		global $wgTitle;
		static $executing = false;

		$fname = "Parser::transformMsg";

		# Guard against infinite recursion
		if ( $executing ) {
			return $text;
		}
		$executing = true;

		wfProfileIn($fname);

		$this->mTitle = $wgTitle;
		$this->mOptions = $options;
		$this->mOutputType = OT_MSG;
		$this->clearState();
		$text = $this->replaceVariables( $text );

		$executing = false;
		wfProfileOut($fname);
		return $text;
	}

	/**
	 * Create an HTML-style tag, e.g. special text
	 * The callback should have the following form:
	 *    function myParserHook( $text, $params, &$parser ) { ... }
	 *
	 * Transform and return $text. Use $parser for any required context, e.g. use
	 * $parser->getTitle() and $parser->getOptions() not $wgTitle or $wgOut->mParserOptions
	 *
	 * @public
	 *
	 * @param mixed $tag The tag to use, e.g. 'hook' for 
	 * @param mixed $callback The callback function (and object) to use for the tag
	 *
	 * @return The old value of the mTagHooks array associated with the hook
	 */
	function setHook( $tag, $callback ) {
		$tag = strtolower( $tag );
		$oldVal = @$this->mTagHooks[$tag];
		$this->mTagHooks[$tag] = $callback;

		return $oldVal;
	}

	/**
	 * Create a function, e.g. {{sum:1|2|3}}
	 * The callback function should have the form:
	 *    function myParserFunction( &$parser, $arg1, $arg2, $arg3 ) { ... }
	 *
	 * The callback may either return the text result of the function, or an array with the text 
	 * in element 0, and a number of flags in the other elements. The names of the flags are 
	 * specified in the keys. Valid flags are:
	 *   found                     The text returned is valid, stop processing the template. This 
	 *                             is on by default.
	 *   nowiki                    Wiki markup in the return value should be escaped
	 *   noparse                   Unsafe HTML tags should not be stripped, etc.
	 *   noargs                    Don't replace triple-brace arguments in the return value
	 *   isHTML                    The returned text is HTML, armour it against wikitext transformation
	 *
	 * @public
	 *
	 * @param mixed $id The magic word ID, or (deprecated) the function name. Function names are case-insensitive.
	 * @param mixed $callback The callback function (and object) to use
	 * @param integer $flags a combination of the following flags: 
	 *                SFH_NO_HASH No leading hash, i.e. {{plural:...}} instead of {{#if:...}}
	 *
	 * @return The old callback function for this name, if any
	 */
	function setFunctionHook( $id, $callback, $flags = 0 ) {
		if( is_string( $id ) ) {
			$id = strtolower( $id );
		}
		$oldVal = @$this->mFunctionHooks[$id];
		$this->mFunctionHooks[$id] = $callback;

		# Add to function cache
		if ( is_int( $id ) ) {
			$mw = MagicWord::get( $id );
			$synonyms = $mw->getSynonyms();
			$sensitive = intval( $mw->isCaseSensitive() );
		} else {
			$synonyms = array( $id );
			$sensitive = 0;
		}

		foreach ( $synonyms as $syn ) {
			# Case
			if ( !$sensitive ) {
				$syn = strtolower( $syn );
			}
			# Add leading hash
			if ( !( $flags & SFH_NO_HASH ) ) {
				$syn = '#' . $syn;
			}
			# Remove trailing colon
			if ( substr( $syn, -1, 1 ) == ':' ) {
				$syn = substr( $syn, 0, -1 );
			}
			$this->mFunctionSynonyms[$sensitive][$syn] = $id;
		}
		return $oldVal;
	}

	/**
	 * Replace  link placeholders with actual links, in the buffer
	 * Placeholders created in Skin::makeLinkObj()
	 * Returns an array of links found, indexed by PDBK:
	 *  0 - broken
	 *  1 - normal link
	 *  2 - stub
	 * $options is a bit field, RLH_FOR_UPDATE to select for update
	 */
	function replaceLinkHolders( &$text, $options = 0 ) {
		global $wgUser;
		global $wgOutputReplace;

		$fname = 'Parser::replaceLinkHolders';
		wfProfileIn( $fname );

		$pdbks = array();
		$colours = array();
		$sk =& $this->mOptions->getSkin();
		$linkCache =& LinkCache::singleton();

		if ( !empty( $this->mLinkHolders['namespaces'] ) ) {
			wfProfileIn( $fname.'-check' );
			$dbr =& wfGetDB( DB_SLAVE );
			$page = $dbr->tableName( 'page' );
			$threshold = $wgUser->getOption('stubthreshold');

			# Sort by namespace
			asort( $this->mLinkHolders['namespaces'] );

			# Generate query
			$query = false;
			foreach ( $this->mLinkHolders['namespaces'] as $key => $ns ) {
				# Make title object
				$title = $this->mLinkHolders['titles'][$key];

				# Skip invalid entries.
				# Result will be ugly, but prevents crash.
				if ( is_null( $title ) ) {
					continue;
				}
				$pdbk = $pdbks[$key] = $title->getPrefixedDBkey();

				# Check if it's a static known link, e.g. interwiki
				if ( $title->isAlwaysKnown() ) {
					$colours[$pdbk] = 1;
				} elseif ( ( $id = $linkCache->getGoodLinkID( $pdbk ) ) != 0 ) {
					$colours[$pdbk] = 1;
					$this->mOutput->addLink( $title, $id );
				} elseif ( $linkCache->isBadLink( $pdbk ) ) {
					$colours[$pdbk] = 0;
				} else {
					# Not in the link cache, add it to the query
					if ( !isset( $current ) ) {
						$current = $ns;
						$query =  "SELECT page_id, page_namespace, page_title";
						if ( $threshold > 0 ) {
							$query .= ', page_len, page_is_redirect';
						}
						$query .= " FROM $page WHERE (page_namespace=$ns AND page_title IN(";
					} elseif ( $current != $ns ) {
						$current = $ns;
						$query .= ")) OR (page_namespace=$ns AND page_title IN(";
					} else {
						$query .= ', ';
					}

					$query .= $dbr->addQuotes( $this->mLinkHolders['dbkeys'][$key] );
				}
			}
			if ( $query ) {
				$query .= '))';
				if ( $options & RLH_FOR_UPDATE ) {
					$query .= ' FOR UPDATE';
				}

				$res = $dbr->query( $query, $fname );

				# Fetch data and form into an associative array
				# non-existent = broken
				# 1 = known
				# 2 = stub
				while ( $s = $dbr->fetchObject($res) ) {
					$title = Title::makeTitle( $s->page_namespace, $s->page_title );
					$pdbk = $title->getPrefixedDBkey();
					$linkCache->addGoodLinkObj( $s->page_id, $title );
					$this->mOutput->addLink( $title, $s->page_id );

					if ( $threshold >  0 ) {
						$size = $s->page_len;
						if ( $s->page_is_redirect || $s->page_namespace != 0 || $size >= $threshold ) {
							$colours[$pdbk] = 1;
						} else {
							$colours[$pdbk] = 2;
						}
					} else {
						$colours[$pdbk] = 1;
					}
				}
			}
			wfProfileOut( $fname.'-check' );

			# Construct search and replace arrays
			wfProfileIn( $fname.'-construct' );
			$wgOutputReplace = array();
			foreach ( $this->mLinkHolders['namespaces'] as $key => $ns ) {
				$pdbk = $pdbks[$key];
				$searchkey = "";
				$title = $this->mLinkHolders['titles'][$key];
				if ( empty( $colours[$pdbk] ) ) {
					$linkCache->addBadLinkObj( $title );
					$colours[$pdbk] = 0;
					$this->mOutput->addLink( $title, 0 );
					$wgOutputReplace[$searchkey] = $sk->makeBrokenLinkObj( $title,
									$this->mLinkHolders['texts'][$key],
									$this->mLinkHolders['queries'][$key] );
				} elseif ( $colours[$pdbk] == 1 ) {
					$wgOutputReplace[$searchkey] = $sk->makeKnownLinkObj( $title,
									$this->mLinkHolders['texts'][$key],
									$this->mLinkHolders['queries'][$key] );
				} elseif ( $colours[$pdbk] == 2 ) {
					$wgOutputReplace[$searchkey] = $sk->makeStubLinkObj( $title,
									$this->mLinkHolders['texts'][$key],
									$this->mLinkHolders['queries'][$key] );
				}
			}
			wfProfileOut( $fname.'-construct' );

			# Do the thing
			wfProfileIn( $fname.'-replace' );

			$text = preg_replace_callback(
				'/()/',
				"wfOutputReplaceMatches",
				$text);

			wfProfileOut( $fname.'-replace' );
		}

		# Now process interwiki link holders
		# This is quite a bit simpler than internal links
		if ( !empty( $this->mInterwikiLinkHolders['texts'] ) ) {
			wfProfileIn( $fname.'-interwiki' );
			# Make interwiki link HTML
			$wgOutputReplace = array();
			foreach( $this->mInterwikiLinkHolders['texts'] as $key => $link ) {
				$title = $this->mInterwikiLinkHolders['titles'][$key];
				$wgOutputReplace[$key] = $sk->makeLinkObj( $title, $link );
			}

			$text = preg_replace_callback(
				'//',
				"wfOutputReplaceMatches",
				$text );
			wfProfileOut( $fname.'-interwiki' );
		}

		wfProfileOut( $fname );
		return $colours;
	}

	/**
	 * Replace  link placeholders with plain text of links
	 * (not HTML-formatted).
	 * @param string $text
	 * @return string
	 */
	function replaceLinkHoldersText( $text ) {
		$fname = 'Parser::replaceLinkHoldersText';
		wfProfileIn( $fname );

		$text = preg_replace_callback(
			'//',
			array( &$this, 'replaceLinkHoldersTextCallback' ),
			$text );

		wfProfileOut( $fname );
		return $text;
	}

	/**
	 * @param array $matches
	 * @return string
	 * @private
	 */
	function replaceLinkHoldersTextCallback( $matches ) {
		$type = $matches[1];
		$key  = $matches[2];
		if( $type == 'LINK' ) {
			if( isset( $this->mLinkHolders['texts'][$key] ) ) {
				return $this->mLinkHolders['texts'][$key];
			}
		} elseif( $type == 'IWLINK' ) {
			if( isset( $this->mInterwikiLinkHolders['texts'][$key] ) ) {
				return $this->mInterwikiLinkHolders['texts'][$key];
			}
		}
		return $matches[0];
	}

	/**
	 * Tag hook handler for 'pre'.
	 */
	function renderPreTag( $text, $attribs, $parser ) {
		// Backwards-compatibility hack
		$content = preg_replace( '!(.*?)!is', '\\1', $text );
		
		$attribs = Sanitizer::validateTagAttributes( $attribs, 'pre' );
		return wfOpenElement( 'pre', $attribs ) .
			wfEscapeHTMLTagsOnly( $content ) .
			'
'; } /** * Renders an image gallery from a text with one line per image. * text labels may be given by using |-style alternative text. E.g. * Image:one.jpg|The number "1" * Image:tree.jpg|A tree * given as text will return the HTML of a gallery with two images, * labeled 'The number "1"' and * 'A tree'. */ function renderImageGallery( $text, $params ) { $ig = new ImageGallery(); $ig->setShowBytes( false ); $ig->setShowFilename( false ); $ig->setParsing(); $ig->useSkin( $this->mOptions->getSkin() ); if( isset( $params['caption'] ) ) $ig->setCaption( $params['caption'] ); $lines = explode( "\n", $text ); foreach ( $lines as $line ) { # match lines like these: # Image:someimage.jpg|This is some image preg_match( "/^([^|]+)(\\|(.*))?$/", $line, $matches ); # Skip empty lines if ( count( $matches ) == 0 ) { continue; } $nt =& Title::newFromText( $matches[1] ); if( is_null( $nt ) ) { # Bogus title. Ignore these so we don't bomb out later. continue; } if ( isset( $matches[3] ) ) { $label = $matches[3]; } else { $label = ''; } $pout = $this->parse( $label, $this->mTitle, $this->mOptions, false, // Strip whitespace...? false // Don't clear state! ); $html = $pout->getText(); $ig->add( new Image( $nt ), $html ); # Only add real images (bug #5586) if ( $nt->getNamespace() == NS_IMAGE ) { $this->mOutput->addImage( $nt->getDBkey() ); } } return $ig->toHTML(); } /** * Parse image options text and use it to make an image */ function makeImage( &$nt, $options ) { global $wgUseImageResize; $align = ''; # Check if the options text is of the form "options|alt text" # Options are: # * thumbnail make a thumbnail with enlarge-icon and caption, alignment depends on lang # * left no resizing, just left align. label is used for alt= only # * right same, but right aligned # * none same, but not aligned # * ___px scale to ___ pixels width, no aligning. e.g. use in taxobox # * center center the image # * framed Keep original image size, no magnify-button. $part = explode( '|', $options); $mwThumb =& MagicWord::get( MAG_IMG_THUMBNAIL ); $mwManualThumb =& MagicWord::get( MAG_IMG_MANUALTHUMB ); $mwLeft =& MagicWord::get( MAG_IMG_LEFT ); $mwRight =& MagicWord::get( MAG_IMG_RIGHT ); $mwNone =& MagicWord::get( MAG_IMG_NONE ); $mwWidth =& MagicWord::get( MAG_IMG_WIDTH ); $mwCenter =& MagicWord::get( MAG_IMG_CENTER ); $mwFramed =& MagicWord::get( MAG_IMG_FRAMED ); $caption = ''; $width = $height = $framed = $thumb = false; $manual_thumb = '' ; foreach( $part as $key => $val ) { if ( $wgUseImageResize && ! is_null( $mwThumb->matchVariableStartToEnd($val) ) ) { $thumb=true; } elseif ( ! is_null( $match = $mwManualThumb->matchVariableStartToEnd($val) ) ) { # use manually specified thumbnail $thumb=true; $manual_thumb = $match; } elseif ( ! is_null( $mwRight->matchVariableStartToEnd($val) ) ) { # remember to set an alignment, don't render immediately $align = 'right'; } elseif ( ! is_null( $mwLeft->matchVariableStartToEnd($val) ) ) { # remember to set an alignment, don't render immediately $align = 'left'; } elseif ( ! is_null( $mwCenter->matchVariableStartToEnd($val) ) ) { # remember to set an alignment, don't render immediately $align = 'center'; } elseif ( ! is_null( $mwNone->matchVariableStartToEnd($val) ) ) { # remember to set an alignment, don't render immediately $align = 'none'; } elseif ( $wgUseImageResize && ! is_null( $match = $mwWidth->matchVariableStartToEnd($val) ) ) { wfDebug( "MAG_IMG_WIDTH match: $match\n" ); # $match is the image width in pixels if ( preg_match( '/^([0-9]*)x([0-9]*)$/', $match, $m ) ) { $width = intval( $m[1] ); $height = intval( $m[2] ); } else { $width = intval($match); } } elseif ( ! is_null( $mwFramed->matchVariableStartToEnd($val) ) ) { $framed=true; } else { $caption = $val; } } # Strip bad stuff out of the alt text $alt = $this->replaceLinkHoldersText( $caption ); # make sure there are no placeholders in thumbnail attributes # that are later expanded to html- so expand them now and # remove the tags $alt = $this->unstrip($alt, $this->mStripState); $alt = Sanitizer::stripAllTags( $alt ); # Linker does the rest $sk =& $this->mOptions->getSkin(); return $sk->makeImageLinkObj( $nt, $caption, $alt, $align, $width, $height, $framed, $thumb, $manual_thumb ); } /** * Set a flag in the output object indicating that the content is dynamic and * shouldn't be cached. */ function disableCache() { wfDebug( "Parser output marked as uncacheable.\n" ); $this->mOutput->mCacheTime = -1; } /**#@+ * Callback from the Sanitizer for expanding items found in HTML attribute * values, so they can be safely tested and escaped. * @param string $text * @param array $args * @return string * @private */ function attributeStripCallback( &$text, $args ) { $text = $this->replaceVariables( $text, $args ); $text = $this->unstripForHTML( $text ); return $text; } function unstripForHTML( $text ) { $text = $this->unstrip( $text, $this->mStripState ); $text = $this->unstripNoWiki( $text, $this->mStripState ); return $text; } /**#@-*/ /**#@+ * Accessor/mutator */ function Title( $x = NULL ) { return wfSetVar( $this->mTitle, $x ); } function Options( $x = NULL ) { return wfSetVar( $this->mOptions, $x ); } function OutputType( $x = NULL ) { return wfSetVar( $this->mOutputType, $x ); } /**#@-*/ /**#@+ * Accessor */ function getTags() { return array_keys( $this->mTagHooks ); } /**#@-*/ /** * Break wikitext input into sections, and either pull or replace * some particular section's text. * * External callers should use the getSection and replaceSection methods. * * @param $text Page wikitext * @param $section Numbered section. 0 pulls the text before the first * heading; other numbers will pull the given section * along with its lower-level subsections. * @param $mode One of "get" or "replace" * @param $newtext Replacement text for section data. * @return string for "get", the extracted section text. * for "replace", the whole page with the section replaced. */ private function extractSections( $text, $section, $mode, $newtext='' ) { # strip NOWIKI etc. to avoid confusion (true-parameter causes HTML # comments to be stripped as well) $striparray = array(); $oldOutputType = $this->mOutputType; $oldOptions = $this->mOptions; $this->mOptions = new ParserOptions(); $this->mOutputType = OT_WIKI; $striptext = $this->strip( $text, $striparray, true ); $this->mOutputType = $oldOutputType; $this->mOptions = $oldOptions; # now that we can be sure that no pseudo-sections are in the source, # split it up by section $uniq = preg_quote( $this->uniqPrefix(), '/' ); $comment = "(?:$uniq-!--.*?QINU)"; $secs = preg_split( /* "/ ^( (?:$comment|<\/?noinclude>)* # Initial comments will be stripped (?: (=+) # Should this be limited to 6? .+? # Section title... \\2 # Ending = count must match start | ^ .*? <\/h\\3\s*> ) (?:$comment|<\/?noinclude>|\s+)* # Trailing whitespace ok )$ /mix", */ "/ ( ^ (?:$comment|<\/?noinclude>)* # Initial comments will be stripped (=+) # Should this be limited to 6? .+? # Section title... \\2 # Ending = count must match start (?:$comment|<\/?noinclude>|[ \\t]+)* # Trailing whitespace ok $ | .*? <\/h\\3\s*> ) /mix", $striptext, -1, PREG_SPLIT_DELIM_CAPTURE); if( $mode == "get" ) { if( $section == 0 ) { // "Section 0" returns the content before any other section. $rv = $secs[0]; } else { $rv = ""; } } elseif( $mode == "replace" ) { if( $section == 0 ) { $rv = $newtext . "\n\n"; $remainder = true; } else { $rv = $secs[0]; $remainder = false; } } $count = 0; $sectionLevel = 0; for( $index = 1; $index < count( $secs ); ) { $headerLine = $secs[$index++]; if( $secs[$index] ) { // A wiki header $headerLevel = strlen( $secs[$index++] ); } else { // An HTML header $index++; $headerLevel = intval( $secs[$index++] ); } $content = $secs[$index++]; $count++; if( $mode == "get" ) { if( $count == $section ) { $rv = $headerLine . $content; $sectionLevel = $headerLevel; } elseif( $count > $section ) { if( $sectionLevel && $headerLevel > $sectionLevel ) { $rv .= $headerLine . $content; } else { // Broke out to a higher-level section break; } } } elseif( $mode == "replace" ) { if( $count < $section ) { $rv .= $headerLine . $content; } elseif( $count == $section ) { $rv .= $newtext . "\n\n"; $sectionLevel = $headerLevel; } elseif( $count > $section ) { if( $headerLevel <= $sectionLevel ) { // Passed the section's sub-parts. $remainder = true; } if( $remainder ) { $rv .= $headerLine . $content; } } } } # reinsert stripped tags $rv = $this->unstrip( $rv, $striparray ); $rv = $this->unstripNoWiki( $rv, $striparray ); $rv = trim( $rv ); return $rv; } /** * This function returns the text of a section, specified by a number ($section). * A section is text under a heading like == Heading == or \Heading\, or * the first section before any such heading (section 0). * * If a section contains subsections, these are also returned. * * @param $text String: text to look in * @param $section Integer: section number * @return string text of the requested section */ function getSection( $text, $section ) { return $this->extractSections( $text, $section, "get" ); } function replaceSection( $oldtext, $section, $text ) { return $this->extractSections( $oldtext, $section, "replace", $text ); } } /** * @todo document * @package MediaWiki */ class ParserOutput { var $mText, # The output text $mLanguageLinks, # List of the full text of language links, in the order they appear $mCategories, # Map of category names to sort keys $mContainsOldMagic, # Boolean variable indicating if the input contained variables like {{CURRENTDAY}} $mCacheTime, # Time when this object was generated, or -1 for uncacheable. Used in ParserCache. $mVersion, # Compatibility check $mTitleText, # title text of the chosen language variant $mLinks, # 2-D map of NS/DBK to ID for the links in the document. ID=zero for broken. $mTemplates, # 2-D map of NS/DBK to ID for the template references. ID=zero for broken. $mImages, # DB keys of the images used, in the array key only $mExternalLinks, # External link URLs, in the key only $mHTMLtitle, # Display HTML title $mSubtitle, # Additional subtitle $mNewSection, # Show a new section link? $mNoGallery; # No gallery on category page? (__NOGALLERY__) function ParserOutput( $text = '', $languageLinks = array(), $categoryLinks = array(), $containsOldMagic = false, $titletext = '' ) { $this->mText = $text; $this->mLanguageLinks = $languageLinks; $this->mCategories = $categoryLinks; $this->mContainsOldMagic = $containsOldMagic; $this->mCacheTime = ''; $this->mVersion = MW_PARSER_VERSION; $this->mTitleText = $titletext; $this->mLinks = array(); $this->mTemplates = array(); $this->mImages = array(); $this->mExternalLinks = array(); $this->mHTMLtitle = "" ; $this->mSubtitle = "" ; $this->mNewSection = false; $this->mNoGallery = false; } function getText() { return $this->mText; } function &getLanguageLinks() { return $this->mLanguageLinks; } function getCategoryLinks() { return array_keys( $this->mCategories ); } function &getCategories() { return $this->mCategories; } function getCacheTime() { return $this->mCacheTime; } function getTitleText() { return $this->mTitleText; } function &getLinks() { return $this->mLinks; } function &getTemplates() { return $this->mTemplates; } function &getImages() { return $this->mImages; } function &getExternalLinks() { return $this->mExternalLinks; } function getNoGallery() { return $this->mNoGallery; } function containsOldMagic() { return $this->mContainsOldMagic; } function setText( $text ) { return wfSetVar( $this->mText, $text ); } function setLanguageLinks( $ll ) { return wfSetVar( $this->mLanguageLinks, $ll ); } function setCategoryLinks( $cl ) { return wfSetVar( $this->mCategories, $cl ); } function setContainsOldMagic( $com ) { return wfSetVar( $this->mContainsOldMagic, $com ); } function setCacheTime( $t ) { return wfSetVar( $this->mCacheTime, $t ); } function setTitleText( $t ) { return wfSetVar ($this->mTitleText, $t); } function addCategory( $c, $sort ) { $this->mCategories[$c] = $sort; } function addImage( $name ) { $this->mImages[$name] = 1; } function addLanguageLink( $t ) { $this->mLanguageLinks[] = $t; } function addExternalLink( $url ) { $this->mExternalLinks[$url] = 1; } function setNewSection( $value ) { $this->mNewSection = (bool)$value; } function getNewSection() { return (bool)$this->mNewSection; } function addLink( $title, $id ) { $ns = $title->getNamespace(); $dbk = $title->getDBkey(); if ( !isset( $this->mLinks[$ns] ) ) { $this->mLinks[$ns] = array(); } $this->mLinks[$ns][$dbk] = $id; } function addTemplate( $title, $id ) { $ns = $title->getNamespace(); $dbk = $title->getDBkey(); if ( !isset( $this->mTemplates[$ns] ) ) { $this->mTemplates[$ns] = array(); } $this->mTemplates[$ns][$dbk] = $id; } /** * Return true if this cached output object predates the global or * per-article cache invalidation timestamps, or if it comes from * an incompatible older version. * * @param string $touched the affected article's last touched timestamp * @return bool * @public */ function expired( $touched ) { global $wgCacheEpoch; return $this->getCacheTime() == -1 || // parser says it's uncacheable $this->getCacheTime() < $touched || $this->getCacheTime() <= $wgCacheEpoch || !isset( $this->mVersion ) || version_compare( $this->mVersion, MW_PARSER_VERSION, "lt" ); } } /** * Set options of the Parser * @todo document * @package MediaWiki */ class ParserOptions { # All variables are private var $mUseTeX; # Use texvc to expand tags var $mUseDynamicDates; # Use DateFormatter to format dates var $mInterwikiMagic; # Interlanguage links are removed and returned in an array var $mAllowExternalImages; # Allow external images inline var $mAllowExternalImagesFrom; # If not, any exception? var $mSkin; # Reference to the preferred skin var $mDateFormat; # Date format index var $mEditSection; # Create "edit section" links var $mNumberHeadings; # Automatically number headings var $mAllowSpecialInclusion; # Allow inclusion of special pages var $mTidy; # Ask for tidy cleanup var $mInterfaceMessage; # Which lang to call for PLURAL and GRAMMAR var $mUser; # Stored user object, just used to initialise the skin function getUseTeX() { return $this->mUseTeX; } function getUseDynamicDates() { return $this->mUseDynamicDates; } function getInterwikiMagic() { return $this->mInterwikiMagic; } function getAllowExternalImages() { return $this->mAllowExternalImages; } function getAllowExternalImagesFrom() { return $this->mAllowExternalImagesFrom; } function getDateFormat() { return $this->mDateFormat; } function getEditSection() { return $this->mEditSection; } function getNumberHeadings() { return $this->mNumberHeadings; } function getAllowSpecialInclusion() { return $this->mAllowSpecialInclusion; } function getTidy() { return $this->mTidy; } function getInterfaceMessage() { return $this->mInterfaceMessage; } function &getSkin() { if ( !isset( $this->mSkin ) ) { $this->mSkin = $this->mUser->getSkin(); } return $this->mSkin; } function setUseTeX( $x ) { return wfSetVar( $this->mUseTeX, $x ); } function setUseDynamicDates( $x ) { return wfSetVar( $this->mUseDynamicDates, $x ); } function setInterwikiMagic( $x ) { return wfSetVar( $this->mInterwikiMagic, $x ); } function setAllowExternalImages( $x ) { return wfSetVar( $this->mAllowExternalImages, $x ); } function setAllowExternalImagesFrom( $x ) { return wfSetVar( $this->mAllowExternalImagesFrom, $x ); } function setDateFormat( $x ) { return wfSetVar( $this->mDateFormat, $x ); } function setEditSection( $x ) { return wfSetVar( $this->mEditSection, $x ); } function setNumberHeadings( $x ) { return wfSetVar( $this->mNumberHeadings, $x ); } function setAllowSpecialInclusion( $x ) { return wfSetVar( $this->mAllowSpecialInclusion, $x ); } function setTidy( $x ) { return wfSetVar( $this->mTidy, $x); } function setSkin( &$x ) { $this->mSkin =& $x; } function setInterfaceMessage( $x ) { return wfSetVar( $this->mInterfaceMessage, $x); } function ParserOptions( $user = null ) { $this->initialiseFromUser( $user ); } /** * Get parser options * @static */ function newFromUser( &$user ) { return new ParserOptions( $user ); } /** Get user options */ function initialiseFromUser( &$userInput ) { global $wgUseTeX, $wgUseDynamicDates, $wgInterwikiMagic, $wgAllowExternalImages; global $wgAllowExternalImagesFrom, $wgAllowSpecialInclusion; $fname = 'ParserOptions::initialiseFromUser'; wfProfileIn( $fname ); if ( !$userInput ) { global $wgUser; if ( isset( $wgUser ) ) { $user = $wgUser; } else { $user = new User; $user->setLoaded( true ); } } else { $user =& $userInput; } $this->mUser = $user; $this->mUseTeX = $wgUseTeX; $this->mUseDynamicDates = $wgUseDynamicDates; $this->mInterwikiMagic = $wgInterwikiMagic; $this->mAllowExternalImages = $wgAllowExternalImages; $this->mAllowExternalImagesFrom = $wgAllowExternalImagesFrom; $this->mSkin = null; # Deferred $this->mDateFormat = $user->getOption( 'date' ); $this->mEditSection = true; $this->mNumberHeadings = $user->getOption( 'numberheadings' ); $this->mAllowSpecialInclusion = $wgAllowSpecialInclusion; $this->mTidy = false; $this->mInterfaceMessage = false; wfProfileOut( $fname ); } } /** * Callback function used by Parser::replaceLinkHolders() * to substitute link placeholders. */ function &wfOutputReplaceMatches( $matches ) { global $wgOutputReplace; return $wgOutputReplace[$matches[1]]; } /** * Return the total number of articles */ function wfNumberOfArticles() { global $wgNumberOfArticles; wfLoadSiteStats(); return $wgNumberOfArticles; } /** * Return the number of files */ function wfNumberOfFiles() { $fname = 'wfNumberOfFiles'; wfProfileIn( $fname ); $dbr =& wfGetDB( DB_SLAVE ); $numImages = $dbr->selectField('site_stats', 'ss_images', array(), $fname ); wfProfileOut( $fname ); return $numImages; } /** * Return the number of user accounts * @return integer */ function wfNumberOfUsers() { wfProfileIn( 'wfNumberOfUsers' ); $dbr =& wfGetDB( DB_SLAVE ); $count = $dbr->selectField( 'site_stats', 'ss_users', array(), 'wfNumberOfUsers' ); wfProfileOut( 'wfNumberOfUsers' ); return (int)$count; } /** * Return the total number of pages * @return integer */ function wfNumberOfPages() { wfProfileIn( 'wfNumberOfPages' ); $dbr =& wfGetDB( DB_SLAVE ); $count = $dbr->selectField( 'site_stats', 'ss_total_pages', array(), 'wfNumberOfPages' ); wfProfileOut( 'wfNumberOfPages' ); return (int)$count; } /** * Return the total number of admins * * @return integer */ function wfNumberOfAdmins() { static $admins = -1; wfProfileIn( 'wfNumberOfAdmins' ); if( $admins == -1 ) { $dbr =& wfGetDB( DB_SLAVE ); $admins = $dbr->selectField( 'user_groups', 'COUNT(*)', array( 'ug_group' => 'sysop' ), 'wfNumberOfAdmins' ); } wfProfileOut( 'wfNumberOfAdmins' ); return (int)$admins; } /** * Count the number of pages in a particular namespace * * @param $ns Namespace * @return integer */ function wfPagesInNs( $ns ) { static $pageCount = array(); wfProfileIn( 'wfPagesInNs' ); if( !isset( $pageCount[$ns] ) ) { $dbr =& wfGetDB( DB_SLAVE ); $pageCount[$ns] = $dbr->selectField( 'page', 'COUNT(*)', array( 'page_namespace' => $ns ), 'wfPagesInNs' ); } wfProfileOut( 'wfPagesInNs' ); return (int)$pageCount[$ns]; } /** * Get various statistics from the database * @private */ function wfLoadSiteStats() { global $wgNumberOfArticles, $wgTotalViews, $wgTotalEdits; $fname = 'wfLoadSiteStats'; if ( -1 != $wgNumberOfArticles ) return; $dbr =& wfGetDB( DB_SLAVE ); $s = $dbr->selectRow( 'site_stats', array( 'ss_total_views', 'ss_total_edits', 'ss_good_articles' ), array( 'ss_row_id' => 1 ), $fname ); if ( $s === false ) { return; } else { $wgTotalViews = $s->ss_total_views; $wgTotalEdits = $s->ss_total_edits; $wgNumberOfArticles = $s->ss_good_articles; } } /** * Escape html tags * Basically replacing " > and < with HTML entities ( ", >, <) * * @param $in String: text that might contain HTML tags. * @return string Escaped string */ function wfEscapeHTMLTagsOnly( $in ) { return str_replace( array( '"', '>', '<' ), array( '"', '>', '<' ), $in ); } ?>