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Diffstat (limited to 'includes/Parser.php')
| -rw-r--r-- | includes/Parser.php | 4727 |
1 files changed, 4727 insertions, 0 deletions
diff --git a/includes/Parser.php b/includes/Parser.php new file mode 100644 index 00000000..31976baf --- /dev/null +++ b/includes/Parser.php @@ -0,0 +1,4727 @@ +<?php +/** + * File for Parser and related classes + * + * @package MediaWiki + * @subpackage Parser + */ + +/** + * Update this version number when the ParserOutput format + * changes in an incompatible way, so the parser cache + * can automatically discard old data. + */ +define( 'MW_PARSER_VERSION', '1.6.1' ); + +/** + * Variable substitution O(N^2) attack + * + * Without countermeasures, it would be possible to attack the parser by saving + * a page filled with a large number of inclusions of large pages. The size of + * the generated page would be proportional to the square of the input size. + * Hence, we limit the number of inclusions of any given page, thus bringing any + * attack back to O(N). + */ + +define( 'MAX_INCLUDE_REPEAT', 100 ); +define( 'MAX_INCLUDE_SIZE', 1000000 ); // 1 Million + +define( 'RLH_FOR_UPDATE', 1 ); + +# Allowed values for $mOutputType +define( 'OT_HTML', 1 ); +define( 'OT_WIKI', 2 ); +define( 'OT_MSG' , 3 ); + +# Flags for setFunctionHook +define( 'SFH_NO_HASH', 1 ); + +# string parameter for extractTags which will cause it +# to strip HTML comments in addition to regular +# <XML>-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 + * + * <pre> + * 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 + * </pre> + * + * @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 <nowiki> 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 <nowiki> 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''] --> + # <i>Something</i><a href="http://www.cool.com"..><i>cool></i></a> + '/(<([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[^>]+>[^<]*)<\/a>(.*)<\/a>/' => + '\\1\\2</a>\\3</a>\\1\\4</a>', + # 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([^>]*)>)(.*)(<\/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' ), + * '<element param="x">tag content</element>' ) ) + * + * @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, <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 <!-- like this --> + * 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 <gallery> 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; + $wrappedtext = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"'. +' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>'. +'<head><title>test</title></head><body>'.$text.'</body></html>'; + if( $wgTidyInternal ) { + $correctedtext = Parser::internalTidy( $wrappedtext ); + } else { + $correctedtext = Parser::externalTidy( $wrappedtext ); + } + if( is_null( $correctedtext ) ) { + wfDebug( "Tidy error detected!\n" ); + return $text . "\n<!-- Tidy found serious XHTML errors -->\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 <tr> 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( '<dl><dd>', $indent_level ) . + '<table' . Sanitizer::fixTagAttributes ( $attributes, 'table' ) . '>' ; + 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 = "</table>" . substr ( $x , 2); + $l = array_pop ( $ltd ) ; + if ( !array_pop ( $has_opened_tr ) ) $z = "<tr><td></td></tr>" . $z ; + if ( array_pop ( $tr ) ) $z = '</tr>' . $z ; + if ( array_pop ( $td ) ) $z = '</'.$l.'>' . $z ; + array_pop ( $ltr ) ; + $t[$k] = $z . str_repeat( '</dd></dl>', $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 = '</tr>' . $z ; + if ( array_pop ( $td ) ) $z = '</'.$l.'>' . $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 ) ) $z = '<tr'.$tra.">\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 ) ) $z = '</'.$l.'>' . $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[] = '</td>' ; + if ( array_pop ( $tr ) ) $t[] = '</tr>' ; + if ( !array_pop ( $has_opened_tr ) ) $t[] = "<tr><td></td></tr>" ; + $t[] = '</table>' ; + } + + $t = implode ( "\n" , $t ) ; + # special case: don't return empty table + if($t == "<table>\n<tr><td></td></tr>\n</table>") + $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 <noinclude> tags and <includeonly> sections + $text = strtr( $text, array( '<onlyinclude>' => '' , '</onlyinclude>' => '' ) ); + $text = strtr( $text, array( '<noinclude>' => '', '</noinclude>' => '') ); + $text = preg_replace( '/<includeonly>.*?<\/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<hr />', $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", + "<h{$i}>\\1</h{$i}>\\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 .= '</i>'; $state = ''; } + else if ($state == 'bi') + { $output .= '</i>'; $state = 'b'; } + else if ($state == 'ib') + { $output .= '</b></i><b>'; $state = 'b'; } + else if ($state == 'both') + { $output .= '<b><i>'.$buffer.'</i>'; $state = 'b'; } + else # $state can be 'b' or '' + { $output .= '<i>'; $state .= 'i'; } + } + else if (strlen ($r) == 3) + { + if ($state == 'b') + { $output .= '</b>'; $state = ''; } + else if ($state == 'bi') + { $output .= '</i></b><i>'; $state = 'i'; } + else if ($state == 'ib') + { $output .= '</b>'; $state = 'i'; } + else if ($state == 'both') + { $output .= '<i><b>'.$buffer.'</b>'; $state = 'i'; } + else # $state can be 'i' or '' + { $output .= '<b>'; $state .= 'b'; } + } + else if (strlen ($r) == 5) + { + if ($state == 'b') + { $output .= '</b><i>'; $state = 'i'; } + else if ($state == 'i') + { $output .= '</i><b>'; $state = 'b'; } + else if ($state == 'bi') + { $output .= '</i></b>'; $state = ''; } + else if ($state == 'ib') + { $output .= '</b></i>'; $state = ''; } + else if ($state == 'both') + { $output .= '<i><b>'.$buffer.'</b></i>'; $state = ''; } + else # ($state == '') + { $buffer = ''; $state = 'both'; } + } + } + $i++; + } + # Now close all remaining tags. Notice that the order is important. + if ($state == 'b' || $state == 'ib') + $output .= '</b>'; + if ($state == 'i' || $state == 'bi' || $state == 'ib') + $output .= '</i>'; + if ($state == 'bi') + $output .= '</b>'; + if ($state == 'both') + $output .= '<b><i>'.$buffer.'</i></b>'; + 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<count( $bits ) ) { + $url = $bits[$i++]; + $protocol = $bits[$i++]; + $text = $bits[$i++]; + $trail = $bits[$i++]; + + # 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)) { + $text = substr($url, $m2[0][1]) . ' ' . $text; + $url = substr($url, 0, $m2[0][1]); + } + + # If the link text is an image URL, replace it with an <img> 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 + $retVal = "<!-- ERROR -->{$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; + $retVal = '<!--IWLINK '. ($nr-1) ."-->{$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; + + $retVal = '<!--LINK '. ($nr-1) ."-->{$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 = '</' . $this->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 .= '<ul><li>'; } + else if ( '#' == $char ) { $result .= '<ol><li>'; } + else if ( ':' == $char ) { $result .= '<dl><dd>'; } + else if ( ';' == $char ) { + $result .= '<dl><dt>'; + $this->mDTopen = true; + } + else { $result = '<!-- ERR 1 -->'; } + + return $result; + } + + /* private */ function nextItem( $char ) { + if ( '*' == $char || '#' == $char ) { return '</li><li>'; } + else if ( ':' == $char || ';' == $char ) { + $close = '</dd>'; + if ( $this->mDTopen ) { $close = '</dt>'; } + if ( ';' == $char ) { + $this->mDTopen = true; + return $close . '<dt>'; + } else { + $this->mDTopen = false; + return $close . '<dd>'; + } + } + return '<!-- ERR 2 -->'; + } + + /* private */ function closeList( $char ) { + if ( '*' == $char ) { $text = '</li></ul>'; } + else if ( '#' == $char ) { $text = '</li></ol>'; } + else if ( ':' == $char ) { + if ( $this->mDTopen ) { + $this->mDTopen = false; + $text = '</dt></dl>'; + } else { + $text = '</dd></dl>'; + } + } + else { return '<!-- ERR 3 -->'; } + 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('/<pre/i', $oLine ); + if ( !$this->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('/(<table|<blockquote|<h1|<h2|<h3|<h4|<h5|<h6|<pre|<tr|<p|<ul|<ol|<li|<\\/center|<\\/tr|<\\/td|<\\/th)/iS', $t ); + $closematch = preg_match( + '/(<\\/table|<\\/blockquote|<\\/h1|<\\/h2|<\\/h3|<\\/h4|<\\/h5|<\\/h6|'. + '<td|<th|<div|<\\/div|<hr|<\\/pre|<\\/p|'.$this->mUniqPrefix.'-pre|<\\/li|<\\/ul|<\\/ol|<center)/iS', $t ); + if ( $openmatch or $closematch ) { + $paragraphStack = false; + #Â TODO bug 5718: paragraph closed + $output .= $this->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().'<pre>'; + $this->mLastSection = 'pre'; + } + $t = substr( $t, 1 ); + } else { + // paragraph + if ( '' == trim($t) ) { + if ( $paragraphStack ) { + $output .= $paragraphStack.'<br />'; + $paragraphStack = false; + $this->mLastSection = 'p'; + } else { + if ($this->mLastSection != 'p' ) { + $output .= $this->closeParagraph(); + $this->mLastSection = ''; + $paragraphStack = '<p>'; + } else { + $paragraphStack = '</p><p>'; + } + } + } else { + if ( $paragraphStack ) { + $output .= $paragraphStack; + $paragraphStack = false; + $this->mLastSection = 'p'; + } else if ($this->mLastSection != 'p') { + $output .= $this->closeParagraph().'<p>'; + $this->mLastSection = 'p'; + } + } + } + } + wfProfileOut( "$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 .= '</' . $this->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 <start> tag or an </end> 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 <tag> + 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 </tag> + 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 <blah/> + $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 . + '{{' . $part1 . '}}' . + '<!-- WARNING: template loop detected -->'; + wfDebug( "$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 <onlyinclude> tags, only include them + if ( in_string( '<onlyinclude>', $text ) && in_string( '</onlyinclude>', $text ) ) { + preg_match_all( '/<onlyinclude>(.*?)\n?<\/onlyinclude>/s', $text, $m ); + $text = ''; + foreach ($m[1] as $piece) + $text .= $piece; + } + # Remove <noinclude> sections and <includeonly> tags + $text = preg_replace( '/<noinclude>.*?<\/noinclude>/s', '', $text ); + $text = strtr( $text, array( '<includeonly>' => '' , '</includeonly>' => '' ) ); + + if( $this->mOutputType == OT_HTML ) { + # Strip <nowiki>, <pre>, 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, "<!--MWTEMPLATESECTION") ) { + $text .= $hl; + continue; + } + preg_match('/^(={1,6})(.*?)(={1,6})\s*?$/m', $hl, $m2); + $text .= $m2[1] . $m2[2] . "<!--MWTEMPLATESECTION=" + . $encodedname . "&" . base64_encode("$nsec") . "-->" . $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( '<!--MWTOC-->', $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])(.*?'.'>)(.*?)<\/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("/<!--MWTEMPLATESECTION=([^&]+)&([^_]+)-->/", $headline, $mat)) { + $istemplate = 1; + $templatetitle = base64_decode($mat[1]); + $templatesection = 1 + (int)base64_decode($mat[2]); + $headline = preg_replace("/<!--MWTEMPLATESECTION=([^&]+)&([^_]+)-->/", "", $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 <math> 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. + # <!--LINK number--> + # turns into + # link text with suffix + $canonized_headline = preg_replace( '/<!--LINK ([0-9]*)-->/e', + "\$this->mLinkHolders['texts'][\$1]", + $canonized_headline ); + $canonized_headline = preg_replace( '/<!--IWLINK ([0-9]*)-->/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, $headline_hint); + } + + # give headline the correct <h#> tag + @$head[$headlineCount] .= "<a name=\"$anchor\"></a><h".$level.$matches[2][$headlineCount] .$headline.'</h'.$level.'>'; + + $headlineCount++; + if( !$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].*?' . '>.*?<\/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( '<!--MWTOC-->', $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 .= '<a href="' . + $titleObj->escapeLocalUrl( 'isbn='.$num ) . + "\" class=\"internal\">ISBN $isbn</a>"; + $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 ); + $text .= "<a href=\"{$url}\"{$la}>{$keyword}{$id}</a>{$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 <nowiki> 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. <yourtag>special text</yourtag> + * 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 <hook> + * @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--> 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 = "<!--LINK $key-->"; + $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( + '/(<!--LINK .*?-->)/', + "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( + '/<!--IWLINK (.*?)-->/', + "wfOutputReplaceMatches", + $text ); + wfProfileOut( $fname.'-interwiki' ); + } + + wfProfileOut( $fname ); + return $colours; + } + + /** + * Replace <!--LINK--> link placeholders with plain text of links + * (not HTML-formatted). + * @param string $text + * @return string + */ + function replaceLinkHoldersText( $text ) { + $fname = 'Parser::replaceLinkHoldersText'; + wfProfileIn( $fname ); + + $text = preg_replace_callback( + '/<!--(LINK|IWLINK) (.*?)-->/', + array( &$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( '!<nowiki>(.*?)</nowiki>!is', '\\1', $text ); + + $attribs = Sanitizer::validateTagAttributes( $attribs, 'pre' ); + return wfOpenElement( 'pre', $attribs ) . + wfEscapeHTMLTagsOnly( $content ) . + '</pre>'; + } + + /** + * 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([1-6])\b.*?> + .*? + <\/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([1-6])\b.*?> + .*? + <\/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 \<h1\>Heading\</h1\>, 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 <math> 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 ); +} + +?> |