• '; } else if ( '#' == $char ) { $result .= '
  1. '; } else if ( ':' == $char ) { $result .= '

     '; } else if ( ';' == $char ) { $result .= '

     '; $this->mDTopen = true; } else { $result = ''; } return $result; } /* private */ function nextItem( $char ) { if ( '*' == $char || '#' == $char ) { return '

  2. '; } else if ( ':' == $char || ';' == $char ) { $close = ''; if ( $this->mDTopen ) { $close = ''; } if ( ';' == $char ) { $this->mDTopen = true; return $close . '
     '; } else { $this->mDTopen = false; return $close . '
     '; } } return ''; } /* private */ function closeList( $char ) { if ( '*' == $char ) { $text = '

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
				$uniq_prefix = UNIQ_PREFIX;
				// XXX: use a stack for nestable elements like span, table and div
				$openmatch = preg_match('/(closeParagraph();
					if ( $closematch ) {
						$inBlockElem = false;
					} else {
						$inBlockElem = true;
					}
				} else if ( !$inBlockElem && !$this->mInPre ) {
					if ( ' ' == $t{0} and ( $this->mLastSection == 'pre' or trim($t) != '' ) ) {
						// pre
						if ($this->mLastSection != 'pre') {
							$paragraphStack = false;
							$output .= $this->closeParagraph().'
';
							$this->mLastSection = 'pre';
						}
						$t = substr( $t, 1 );
					} else {
						// paragraph
						if ( '' == trim($t) ) {
							if ( $paragraphStack ) {
								$output .= $paragraphStack.'
';
								$paragraphStack = false;
								$this->mLastSection = 'p';
							} else {
								if ($this->mLastSection != 'p' ) {
									$output .= $this->closeParagraph();
									$this->mLastSection = '';
									$paragraphStack = '
';
								} else {
									$paragraphStack = '
';
								}
							}
						} else {
							if ( $paragraphStack ) {
								$output .= $paragraphStack;
								$paragraphStack = false;
								$this->mLastSection = 'p';
							} else if ($this->mLastSection != 'p') {
								$output .= $this->closeParagraph().'
';
								$this->mLastSection = 'p';
							}
						}
					}
				}
				wfProfileOut( "$fname-paragraph" );
			}
			// somewhere above we forget to get out of pre block (bug 785)
			if($preCloseMatch && $this->mInPre) {
				$this->mInPre = false;
			}
			if ($paragraphStack === false) {
				$output .= $t."\n";
			}
		}
		while ( $prefixLength ) {
			$output .= $this->closeList( $pref2{$prefixLength-1} );
			--$prefixLength;
		}
		if ( '' != $this->mLastSection ) {
			$output .= 'mLastSection . '>';
			$this->mLastSection = '';
		}

		wfProfileOut( $fname );
		return $output;
	}

	/**
	 * Split up a string on ':', ignoring any occurences inside
	 * .. or ...
	 * @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) {
		# I wonder if we should make this count all tags, not just 
		# and . That would prevent us from matching a ':' that
		# comes in the middle of italics other such formatting....
		# -- Wil
		$fname = 'Parser::findColonNoLinks';
		wfProfileIn( $fname );
		$pos = 0;
		do {
			$colon = strpos($str, ':', $pos);

			if ($colon !== false) {
				$before = substr($str, 0, $colon);
				$after = substr($str, $colon + 1);

				# Skip any ':' within  or  pairs
				$a = substr_count($before, '');
				$cs = substr_count($before, '');

				if ($a <= $ca and $s <= $cs) {
					# Tags are balanced before ':'; ok
					break;
				}
				$pos = $colon + 1;
			}
		} while ($colon !== false);
		wfProfileOut( $fname );
		return $colon;
	}

	/**
	 * Return value of a magic variable (like PAGENAME)
	 *
	 * @access private
	 */
	function getVariableValue( $index ) {
		global $wgContLang, $wgSitename, $wgServer, $wgServerName, $wgArticle, $wgScriptPath;

		/**
		 * Some of these require message or data lookups and can be
		 * expensive to check many times.
		 */
		static $varCache = array();
		if( isset( $varCache[$index] ) ) return $varCache[$index];

		switch ( $index ) {
			case MAG_CURRENTMONTH:
				return $varCache[$index] = $wgContLang->formatNum( date( 'm' ) );
			case MAG_CURRENTMONTHNAME:
				return $varCache[$index] = $wgContLang->getMonthName( date('n') );
			case MAG_CURRENTMONTHNAMEGEN:
				return $varCache[$index] = $wgContLang->getMonthNameGen( date('n') );
			case MAG_CURRENTMONTHABBREV:
				return $varCache[$index] = $wgContLang->getMonthAbbreviation( date('n') );
			case MAG_CURRENTDAY:
				return $varCache[$index] = $wgContLang->formatNum( date('j') );
			case MAG_PAGENAME:
				return $this->mTitle->getText();
			case MAG_PAGENAMEE:
				return $this->mTitle->getPartialURL();
			case MAG_REVISIONID:
				return $wgArticle->getRevIdFetched();
			case MAG_NAMESPACE:
				# return Namespace::getCanonicalName($this->mTitle->getNamespace());
				return $wgContLang->getNsText($this->mTitle->getNamespace()); # Patch by Dori
			case MAG_CURRENTDAYNAME:
				return $varCache[$index] = $wgContLang->getWeekdayName( date('w')+1 );
			case MAG_CURRENTYEAR:
				return $varCache[$index] = $wgContLang->formatNum( date( 'Y' ), true );
			case MAG_CURRENTTIME:
				return $varCache[$index] = $wgContLang->time( wfTimestampNow(), false );
			case MAG_CURRENTWEEK:
				return $varCache[$index] = $wgContLang->formatNum( date('W') );
			case MAG_CURRENTDOW:
				return $varCache[$index] = $wgContLang->formatNum( date('w') );
			case MAG_NUMBEROFARTICLES:
				return $varCache[$index] = $wgContLang->formatNum( wfNumberOfArticles() );
			case MAG_NUMBEROFFILES:
				return $varCache[$index] = $wgContLang->formatNum( wfNumberOfFiles() );
			case MAG_SITENAME:
				return $wgSitename;
			case MAG_SERVER:
				return $wgServer;
			case MAG_SERVERNAME:
				return $wgServerName;
			case MAG_SCRIPTPATH:
				return $wgScriptPath;
			default:
				return NULL;
		}
	}

	/**
	 * initialise the magic variables (like CURRENTMONTHNAME)
	 *
	 * @access 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 );
	}

	/**
	 * 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
	 * @access private
	 */
	function replaceVariables( $text, $args = array() ) {

		# Prevent too big inclusions
		if( strlen( $text ) > MAX_INCLUDE_SIZE ) {
			return $text;
		}

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

		$titleChars = Title::legalChars();

		# This function is called recursively. To keep track of arguments we need a stack:
		array_push( $this->mArgStack, $args );

		# Variable substitution
		$text = preg_replace_callback( "/{{([$titleChars]*?)}}/", array( &$this, 'variableSubstitution' ), $text );

		if ( $this->mOutputType == OT_HTML || $this->mOutputType == OT_WIKI ) {
			# Argument substitution
			$text = preg_replace_callback( "/{{{([$titleChars]*?)}}}/", array( &$this, 'argSubstitution' ), $text );
		}
		# Template substitution
		$regex = '/(\\n|{)?{{(['.$titleChars.']*)(\\|.*?|)}}/s';
		$text = preg_replace_callback( $regex, array( &$this, 'braceSubstitution' ), $text );

		array_pop( $this->mArgStack );

		wfProfileOut( $fname );
		return $text;
	}

	/**
	 * Replace magic variables
	 * @access private
	 */
	function variableSubstitution( $matches ) {
		$fname = 'parser::variableSubstitution';
		$varname = $matches[1];
		wfProfileIn( $fname );
		if ( !$this->mVariables ) {
			$this->initialiseVariables();
		}
		$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 $matches The parts of the template
	 *  $matches[1]: the title, i.e. the part before the |
	 *  $matches[2]: the parameters (including a leading |), if  any
	 * @return string the text of the template
	 * @access private
	 */
	function braceSubstitution( $matches ) {
		global $wgLinkCache, $wgContLang;
		$fname = 'Parser::braceSubstitution';
		wfProfileIn( $fname );

		$found = false;
		$nowiki = false;
		$noparse = false;

		$title = NULL;

		# Need to know if the template comes at the start of a line,
		# to treat the beginning of the template like the beginning
		# of a line for tables and block-level elements.
		$linestart = $matches[1];

		# $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 = $matches[2];
		# If the third subpattern matched anything, it will start with |

		$args = $this->getTemplateArgs($matches[3]);
		$argc = count( $args );

		# Don't parse {{{}}} because that's only for template arguments
		if ( $linestart === '{' ) {
			$text = $matches[0];
			$found = true;
			$noparse = true;
		}

		# 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 = $matches[0];
				$found = true;
				$noparse = true;
			}
		}

		# MSG, MSGNW and INT
		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 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;
				}
			}
		}

		# NS
		if ( !$found ) {
			# Check for NS: (namespace expansion)
			$mwNs = MagicWord::get( MAG_NS );
			if ( $mwNs->matchStartAndRemove( $part1 ) ) {
				if ( intval( $part1 ) ) {
					$text = $linestart . $wgContLang->getNsText( intval( $part1 ) );
					$found = true;
				} else {
					$index = Namespace::getCanonicalIndex( strtolower( $part1 ) );
					if ( !is_null( $index ) ) {
						$text = $linestart . $wgContLang->getNsText( $index );
						$found = true;
					}
				}
			}
		}

		# LOCALURL and LOCALURLE
		if ( !$found ) {
			$mwLocal = MagicWord::get( MAG_LOCALURL );
			$mwLocalE = MagicWord::get( MAG_LOCALURLE );

			if ( $mwLocal->matchStartAndRemove( $part1 ) ) {
				$func = 'getLocalURL';
			} elseif ( $mwLocalE->matchStartAndRemove( $part1 ) ) {
				$func = 'escapeLocalURL';
			} else {
				$func = '';
			}

			if ( $func !== '' ) {
				$title = Title::newFromText( $part1 );
				if ( !is_null( $title ) ) {
					if ( $argc > 0 ) {
						$text = $linestart . $title->$func( $args[0] );
					} else {
						$text = $linestart . $title->$func();
					}
					$found = true;
				}
			}
		}

		# GRAMMAR
		if ( !$found && $argc == 1 ) {
			$mwGrammar =& MagicWord::get( MAG_GRAMMAR );
			if ( $mwGrammar->matchStartAndRemove( $part1 ) ) {
				$text = $linestart . $wgContLang->convertGrammar( $args[0], $part1 );
				$found = true;
			}
		}

		# 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( $this->mTemplates[$part1] ) ) {
			$found = true;

			# Infinite loop test
			if ( isset( $this->mTemplatePath[$part1] ) ) {
				$noparse = true;
				$found = true;
				$text = $linestart .
					"\{\{$part1}}" .
					'';
				wfDebug( "$fname: template loop broken at '$part1'\n" );
			} else {
				# set $text to cached message.
				$text = $linestart . $this->mTemplates[$part1];
			}
		}

		# Load from database
		$replaceHeadings = false;
		$isHTML = false;
		$lastPathLevel = $this->mTemplatePath;
		if ( !$found ) {
			$ns = NS_TEMPLATE;
			$part1 = $this->maybeDoSubpageLink( $part1, $subpage='' );
			if ($subpage !== '') {
				$ns = $this->mTitle->getNamespace();
			}
			$title = Title::newFromText( $part1, $ns );

                        if ($title) {
                            $interwiki = Title::getInterwikiLink($title->getInterwiki());
                            if ($interwiki != '' && $title->isTrans()) {
                                    return $this->scarytransclude($title, $interwiki);
                            }
                        }

			if ( !is_null( $title ) && !$title->isExternal() ) {
				# Check for excessive inclusion
				$dbk = $title->getPrefixedDBkey();
				if ( $this->incrementIncludeCount( $dbk ) ) {
					if ( $title->getNamespace() == NS_SPECIAL && $this->mOptions->getAllowSpecialInclusion() ) {
						# Capture special page output
						$text = SpecialPage::capturePath( $title );
						if ( $text && !is_object( $text ) ) {
							$found = true;
							$noparse = true;
							$isHTML = true;
							$this->mOutput->setCacheTime( -1 );
						}
					} else {
						$article = new Article( $title );
						$articleContent = $article->getContentWithoutUsingSoManyDamnGlobals();
						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;
				}

				# Template cache array insertion
				if( $found ) {
					$this->mTemplates[$part1] = $text;
					$text = $linestart . $text;
				}
			}
		}

		# 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) && $found && !$noparse) {
			# 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( $this->mOutputType == OT_HTML ) {
				$text = $this->strip( $text, $this->mStripState );
				$text = Sanitizer::removeHTMLtags( $text, array( &$this, 'replaceVariables' ), $assocArgs );
			}
			$text = $this->replaceVariables( $text, $assocArgs );

			# Resume the link cache and register the inclusion as a link
			if ( $this->mOutputType == OT_HTML && !is_null( $title ) ) {
				$wgLinkCache->addLinkObj( $title );
			}

			# If the template begins with a table or block-level
			# element, it should be treated as beginning a new line.
			if ($linestart !== '\n' && preg_match('/^({\\||:|;|#|\*)/', $text)) {
				$text = "\n" . $text;
			}
		}
		# Prune lower levels off the recursion check path
		$this->mTemplatePath = $lastPathLevel;

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

						$nsec++;
					}
				}
			}
		}

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

		if ( !$found ) {
			wfProfileOut( $fname );
			return $matches[0];
		} else {
			wfProfileOut( $fname );
			return $text;
		}
	}

	/**
	 * Translude an interwiki link.
	 */
	function scarytransclude($title, $interwiki) {
		global $wgEnableScaryTranscluding;

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

		$articlename = "Template:" . $title->getDBkey();
		$url = str_replace('$1', urlencode($articlename), $interwiki);
		if (strlen($url) > 255)
			return wfMsg('scarytranscludetoolong');
		$text = $this->fetchScaryTemplateMaybeFromCache($url);
		$this->mIWTransData[] = $text;
		return "";
	}

	function fetchScaryTemplateMaybeFromCache($url) {
		$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() + (60*60))) {
				return $text;
			}
		}

		$text = wfGetHTTP($url . '?action=render');
		if (!$text)
			return wfMsg('scarytranscludefailed', $url);

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


	/**
	 * Triple brace replacement -- used for template arguments
	 * @access private
	 */
	function argSubstitution( $matches ) {
		$arg = trim( $matches[1] );
		$text = $matches[0];
		$inputArgs = end( $this->mArgStack );

		if ( array_key_exists( $arg, $inputArgs ) ) {
			$text = $inputArgs[$arg];
		}

		return $text;
	}

	/**
	 * Returns true if the function is allowed to include this entity
	 * @access 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;
		}
	}

	/**
	 * 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
	 * @access private
	 */
	function formatHeadings( $text, $isMain=true ) {
		global $wgMaxTocLevel, $wgContLang, $wgLinkHolders, $wgInterwikiLinkHolders;

		$doNumberHeadings = $this->mOptions->getNumberHeadings();
		$doShowToc = true;
		$forceTocHere = false;
		if( !$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;
		}
		# if the string __NOTOC__ (not case-sensitive) occurs in the HTML,
		# do not add TOC
		$mw =& MagicWord::get( MAG_NOTOC );
		if( $mw->matchAndRemove( $text ) ) {
			$doShowToc = false;
		}

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

		# if there are fewer than 4 headlines in the article, do not show TOC
		if( $numMatches < 4 ) {
			$doShowToc = false;
		}

		# if the string __TOC__ (not case-sensitive) occurs in the HTML,
		# override above conditions and always show TOC at that place

		$mw =& MagicWord::get( MAG_TOC );
		if($mw->match( $text ) ) {
			$doShowToc = true;
			$forceTocHere = true;
		} else {
			# 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 ) ) {
				$doShowToc = true;
			}
		}

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

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

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

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

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

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

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

			if( $doNumberHeadings || $doShowToc ) {

				if ( $level > $prevlevel ) {
					# Increase TOC level
					$toclevel++;
					$sublevelCount[$toclevel] = 0;
					$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;
							}
						}
					}

					$toc .= $sk->tocUnindent( $prevtoclevel - $toclevel );
				}
				else {
					# No change in level, end TOC line
					$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