Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like ApiParse often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ApiParse, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 28 | class ApiParse extends ApiBase { | 
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| 29 | |||
| 30 | /** @var string $section */  | 
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| 31 | private $section = null;  | 
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| 32 | |||
| 33 | /** @var Content $content */  | 
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| 34 | private $content = null;  | 
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| 35 | |||
| 36 | /** @var Content $pstContent */  | 
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| 37 | private $pstContent = null;  | 
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| 38 | |||
| 39 | 	private function checkReadPermissions( Title $title ) { | 
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| 40 | 		if ( !$title->userCan( 'read', $this->getUser() ) ) { | 
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| 41 | $this->dieUsage( "You don't have permission to view this page", 'permissiondenied' );  | 
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| 42 | }  | 
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| 43 | }  | 
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| 44 | |||
| 45 | 	public function execute() { | 
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| 46 | // The data is hot but user-dependent, like page views, so we set vary cookies  | 
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| 47 | $this->getMain()->setCacheMode( 'anon-public-user-private' );  | 
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| 48 | |||
| 49 | // Get parameters  | 
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| 50 | $params = $this->extractRequestParams();  | 
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| 51 | $text = $params['text'];  | 
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| 52 | $title = $params['title'];  | 
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| 53 | 		if ( $title === null ) { | 
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| 54 | $titleProvided = false;  | 
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| 55 | // A title is needed for parsing, so arbitrarily choose one  | 
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| 56 | $title = 'API';  | 
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| 57 | 		} else { | 
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| 58 | $titleProvided = true;  | 
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| 59 | }  | 
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| 60 | |||
| 61 | $page = $params['page'];  | 
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| 62 | $pageid = $params['pageid'];  | 
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| 63 | $oldid = $params['oldid'];  | 
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| 64 | |||
| 65 | $model = $params['contentmodel'];  | 
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| 66 | $format = $params['contentformat'];  | 
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| 67 | |||
| 68 | 		if ( !is_null( $page ) && ( !is_null( $text ) || $titleProvided ) ) { | 
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| 69 | $this->dieUsage(  | 
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| 70 | 'The page parameter cannot be used together with the text and title parameters',  | 
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| 71 | 'params'  | 
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| 72 | );  | 
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| 73 | }  | 
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| 74 | |||
| 75 | $prop = array_flip( $params['prop'] );  | 
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| 76 | |||
| 77 | 		if ( isset( $params['section'] ) ) { | 
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| 78 | $this->section = $params['section'];  | 
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| 79 | 			if ( !preg_match( '/^((T-)?\d+|new)$/', $this->section ) ) { | 
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| 80 | $this->dieUsage(  | 
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| 81 | 'The section parameter must be a valid section id or "new"', 'invalidsection'  | 
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| 82 | );  | 
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| 83 | }  | 
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| 84 | 		} else { | 
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| 85 | $this->section = false;  | 
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| 
                                                                                                    
                        
                         | 
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| 86 | }  | 
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| 87 | |||
| 88 | // The parser needs $wgTitle to be set, apparently the  | 
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| 89 | // $title parameter in Parser::parse isn't enough *sigh*  | 
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| 90 | // TODO: Does this still need $wgTitle?  | 
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| 91 | global $wgParser, $wgTitle;  | 
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| 92 | |||
| 93 | $redirValues = null;  | 
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| 94 | |||
| 95 | // Return result  | 
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| 96 | $result = $this->getResult();  | 
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| 97 | |||
| 98 | 		if ( !is_null( $oldid ) || !is_null( $pageid ) || !is_null( $page ) ) { | 
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| 99 | 			if ( $this->section === 'new' ) { | 
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| 100 | $this->dieUsage(  | 
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| 101 | 'section=new cannot be combined with oldid, pageid or page parameters. ' .  | 
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| 102 | 'Please use text', 'params'  | 
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| 103 | );  | 
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| 104 | }  | 
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| 105 | 			if ( !is_null( $oldid ) ) { | 
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| 106 | // Don't use the parser cache  | 
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| 107 | $rev = Revision::newFromId( $oldid );  | 
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| 108 | 				if ( !$rev ) { | 
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| 109 | $this->dieUsage( "There is no revision ID $oldid", 'missingrev' );  | 
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| 110 | }  | 
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| 111 | |||
| 112 | $this->checkReadPermissions( $rev->getTitle() );  | 
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| 113 | 				if ( !$rev->userCan( Revision::DELETED_TEXT, $this->getUser() ) ) { | 
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| 114 | $this->dieUsage( "You don't have permission to view deleted revisions", 'permissiondenied' );  | 
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| 115 | }  | 
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| 116 | |||
| 117 | $titleObj = $rev->getTitle();  | 
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| 118 | $wgTitle = $titleObj;  | 
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| 119 | $pageObj = WikiPage::factory( $titleObj );  | 
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| 120 | list( $popts, $reset, $suppressCache ) = $this->makeParserOptions( $pageObj, $params );  | 
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| 121 | |||
| 122 | // If for some reason the "oldid" is actually the current revision, it may be cached  | 
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| 123 | // Deliberately comparing $pageObj->getLatest() with $rev->getId(), rather than  | 
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| 124 | // checking $rev->isCurrent(), because $pageObj is what actually ends up being used,  | 
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| 125 | // and if its ->getLatest() is outdated, $rev->isCurrent() won't tell us that.  | 
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| 126 | 				if ( !$suppressCache && $rev->getId() == $pageObj->getLatest() ) { | 
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| 127 | // May get from/save to parser cache  | 
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| 128 | $p_result = $this->getParsedContent( $pageObj, $popts,  | 
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| 129 | $pageid, isset( $prop['wikitext'] ) );  | 
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| 130 | 				} else { // This is an old revision, so get the text differently | 
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| 131 | $this->content = $rev->getContent( Revision::FOR_THIS_USER, $this->getUser() );  | 
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| 132 | |||
| 133 | 					if ( $this->section !== false ) { | 
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| 134 | $this->content = $this->getSectionContent( $this->content, 'r' . $rev->getId() );  | 
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| 135 | }  | 
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| 136 | |||
| 137 | // Should we save old revision parses to the parser cache?  | 
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| 138 | $p_result = $this->content->getParserOutput( $titleObj, $rev->getId(), $popts );  | 
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| 139 | }  | 
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| 140 | 			} else { // Not $oldid, but $pageid or $page | 
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| 141 | 				if ( $params['redirects'] ) { | 
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| 142 | $reqParams = [  | 
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| 143 | 'redirects' => '',  | 
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| 144 | ];  | 
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| 145 | 					if ( !is_null( $pageid ) ) { | 
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| 146 | $reqParams['pageids'] = $pageid;  | 
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| 147 | 					} else { // $page | 
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| 148 | $reqParams['titles'] = $page;  | 
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| 149 | }  | 
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| 150 | $req = new FauxRequest( $reqParams );  | 
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| 151 | $main = new ApiMain( $req );  | 
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| 152 | $pageSet = new ApiPageSet( $main );  | 
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| 153 | $pageSet->execute();  | 
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| 154 | $redirValues = $pageSet->getRedirectTitlesAsResult( $this->getResult() );  | 
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| 155 | |||
| 156 | $to = $page;  | 
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| 157 | 					foreach ( $pageSet->getRedirectTitles() as $title ) { | 
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| 158 | $to = $title->getFullText();  | 
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| 159 | }  | 
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| 160 | $pageParams = [ 'title' => $to ];  | 
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| 161 | 				} elseif ( !is_null( $pageid ) ) { | 
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| 162 | $pageParams = [ 'pageid' => $pageid ];  | 
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| 163 | 				} else { // $page | 
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| 164 | $pageParams = [ 'title' => $page ];  | 
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| 165 | }  | 
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| 166 | |||
| 167 | $pageObj = $this->getTitleOrPageId( $pageParams, 'fromdb' );  | 
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| 168 | $titleObj = $pageObj->getTitle();  | 
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| 169 | 				if ( !$titleObj || !$titleObj->exists() ) { | 
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| 170 | $this->dieUsage( "The page you specified doesn't exist", 'missingtitle' );  | 
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| 171 | }  | 
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| 172 | |||
| 173 | $this->checkReadPermissions( $titleObj );  | 
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| 174 | $wgTitle = $titleObj;  | 
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| 175 | |||
| 176 | 				if ( isset( $prop['revid'] ) ) { | 
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| 177 | $oldid = $pageObj->getLatest();  | 
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| 178 | }  | 
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| 179 | |||
| 180 | list( $popts, $reset, $suppressCache ) = $this->makeParserOptions( $pageObj, $params );  | 
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| 181 | |||
| 182 | // Don't pollute the parser cache when setting options that aren't  | 
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| 183 | // in ParserOptions::optionsHash()  | 
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| 184 | /// @todo: This should be handled closer to the actual cache instead of here, see T110269  | 
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| 185 | $suppressCache = $suppressCache ||  | 
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| 186 | $params['disablepp'] ||  | 
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| 187 | $params['disablelimitreport'] ||  | 
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| 188 | $params['preview'] ||  | 
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| 189 | $params['sectionpreview'] ||  | 
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| 190 | $params['disabletidy'];  | 
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| 191 | |||
| 192 | 				if ( $suppressCache ) { | 
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| 193 | $this->content = $this->getContent( $pageObj, $pageid );  | 
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| 194 | $p_result = $this->content->getParserOutput( $titleObj, null, $popts );  | 
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| 195 | 				} else { | 
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| 196 | // Potentially cached  | 
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| 197 | $p_result = $this->getParsedContent( $pageObj, $popts, $pageid,  | 
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| 198 | isset( $prop['wikitext'] ) );  | 
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| 199 | }  | 
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| 200 | }  | 
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| 201 | 		} else { // Not $oldid, $pageid, $page. Hence based on $text | 
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| 202 | $titleObj = Title::newFromText( $title );  | 
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| 203 | 			if ( !$titleObj || $titleObj->isExternal() ) { | 
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| 204 | $this->dieUsageMsg( [ 'invalidtitle', $title ] );  | 
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| 205 | }  | 
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| 206 | $wgTitle = $titleObj;  | 
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| 207 | 			if ( $titleObj->canExist() ) { | 
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| 208 | $pageObj = WikiPage::factory( $titleObj );  | 
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| 209 | 			} else { | 
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| 210 | // Do like MediaWiki::initializeArticle()  | 
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| 211 | $article = Article::newFromTitle( $titleObj, $this->getContext() );  | 
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| 212 | $pageObj = $article->getPage();  | 
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| 213 | }  | 
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| 214 | |||
| 215 | list( $popts, $reset ) = $this->makeParserOptions( $pageObj, $params );  | 
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| 216 | $textProvided = !is_null( $text );  | 
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| 217 | |||
| 218 | 			if ( !$textProvided ) { | 
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| 219 | 				if ( $titleProvided && ( $prop || $params['generatexml'] ) ) { | 
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| 220 | $this->setWarning(  | 
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| 221 | "'title' used without 'text', and parsed page properties were requested " .  | 
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| 222 | "(did you mean to use 'page' instead of 'title'?)"  | 
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| 223 | );  | 
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| 224 | }  | 
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| 225 | // Prevent warning from ContentHandler::makeContent()  | 
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| 226 | $text = '';  | 
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| 227 | }  | 
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| 228 | |||
| 229 | // If we are parsing text, do not use the content model of the default  | 
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| 230 | // API title, but default to wikitext to keep BC.  | 
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| 231 | 			if ( $textProvided && !$titleProvided && is_null( $model ) ) { | 
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| 232 | $model = CONTENT_MODEL_WIKITEXT;  | 
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| 233 | $this->setWarning( "No 'title' or 'contentmodel' was given, assuming $model." );  | 
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| 234 | }  | 
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| 235 | |||
| 236 | 			try { | 
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| 237 | $this->content = ContentHandler::makeContent( $text, $titleObj, $model, $format );  | 
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| 238 | 			} catch ( MWContentSerializationException $ex ) { | 
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| 239 | $this->dieUsage( $ex->getMessage(), 'parseerror' );  | 
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| 240 | }  | 
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| 241 | |||
| 242 | 			if ( $this->section !== false ) { | 
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| 243 | 				if ( $this->section === 'new' ) { | 
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| 244 | // Insert the section title above the content.  | 
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| 245 | 					if ( !is_null( $params['sectiontitle'] ) && $params['sectiontitle'] !== '' ) { | 
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| 246 | $this->content = $this->content->addSectionHeader( $params['sectiontitle'] );  | 
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| 247 | }  | 
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| 248 | 				} else { | 
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| 249 | $this->content = $this->getSectionContent( $this->content, $titleObj->getPrefixedText() );  | 
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| 250 | }  | 
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| 251 | }  | 
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| 252 | |||
| 253 | 			if ( $params['pst'] || $params['onlypst'] ) { | 
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| 254 | $this->pstContent = $this->content->preSaveTransform( $titleObj, $this->getUser(), $popts );  | 
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| 255 | }  | 
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| 256 | 			if ( $params['onlypst'] ) { | 
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| 257 | // Build a result and bail out  | 
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| 258 | $result_array = [];  | 
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| 259 | $result_array['text'] = $this->pstContent->serialize( $format );  | 
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| 260 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'text';  | 
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| 261 | 				if ( isset( $prop['wikitext'] ) ) { | 
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| 262 | $result_array['wikitext'] = $this->content->serialize( $format );  | 
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| 263 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'wikitext';  | 
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| 264 | }  | 
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| 265 | View Code Duplication | if ( !is_null( $params['summary'] ) ||  | 
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| 266 | ( !is_null( $params['sectiontitle'] ) && $this->section === 'new' )  | 
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| 267 | 				) { | 
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| 268 | $result_array['parsedsummary'] = $this->formatSummary( $titleObj, $params );  | 
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| 269 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'parsedsummary';  | 
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| 270 | }  | 
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| 271 | |||
| 272 | $result->addValue( null, $this->getModuleName(), $result_array );  | 
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| 273 | |||
| 274 | return;  | 
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| 275 | }  | 
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| 276 | |||
| 277 | // Not cached (save or load)  | 
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| 278 | 			if ( $params['pst'] ) { | 
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| 279 | $p_result = $this->pstContent->getParserOutput( $titleObj, null, $popts );  | 
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| 280 | 			} else { | 
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| 281 | $p_result = $this->content->getParserOutput( $titleObj, null, $popts );  | 
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| 282 | }  | 
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| 283 | }  | 
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| 284 | |||
| 285 | $result_array = [];  | 
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| 286 | |||
| 287 | $result_array['title'] = $titleObj->getPrefixedText();  | 
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| 288 | $result_array['pageid'] = $pageid ?: $pageObj->getId();  | 
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| 289 | |||
| 290 | 		if ( !is_null( $oldid ) ) { | 
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| 291 | $result_array['revid'] = intval( $oldid );  | 
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| 292 | }  | 
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| 293 | |||
| 294 | 		if ( $params['redirects'] && !is_null( $redirValues ) ) { | 
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| 295 | $result_array['redirects'] = $redirValues;  | 
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| 296 | }  | 
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| 297 | |||
| 298 | 		if ( $params['disabletoc'] ) { | 
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| 299 | $p_result->setTOCEnabled( false );  | 
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| 300 | }  | 
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| 301 | |||
| 302 | 		if ( isset( $prop['text'] ) ) { | 
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| 303 | $result_array['text'] = $p_result->getText();  | 
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| 304 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'text';  | 
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| 305 | }  | 
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| 306 | |||
| 307 | View Code Duplication | if ( !is_null( $params['summary'] ) ||  | 
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| 308 | ( !is_null( $params['sectiontitle'] ) && $this->section === 'new' )  | 
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| 309 | 		) { | 
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| 310 | $result_array['parsedsummary'] = $this->formatSummary( $titleObj, $params );  | 
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| 311 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'parsedsummary';  | 
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| 312 | }  | 
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| 313 | |||
| 314 | 		if ( isset( $prop['langlinks'] ) ) { | 
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| 315 | $langlinks = $p_result->getLanguageLinks();  | 
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| 316 | |||
| 317 | 			if ( $params['effectivelanglinks'] ) { | 
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| 318 | // Link flags are ignored for now, but may in the future be  | 
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| 319 | // included in the result.  | 
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| 320 | $linkFlags = [];  | 
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| 321 | Hooks::run( 'LanguageLinks', [ $titleObj, &$langlinks, &$linkFlags ] );  | 
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| 322 | }  | 
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| 323 | 		} else { | 
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| 324 | $langlinks = false;  | 
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| 325 | }  | 
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| 326 | |||
| 327 | 		if ( isset( $prop['langlinks'] ) ) { | 
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| 328 | $result_array['langlinks'] = $this->formatLangLinks( $langlinks );  | 
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| 329 | }  | 
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| 330 | 		if ( isset( $prop['categories'] ) ) { | 
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| 331 | $result_array['categories'] = $this->formatCategoryLinks( $p_result->getCategories() );  | 
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| 332 | }  | 
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| 333 | 		if ( isset( $prop['categorieshtml'] ) ) { | 
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| 334 | $result_array['categorieshtml'] = $this->categoriesHtml( $p_result->getCategories() );  | 
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| 335 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'categorieshtml';  | 
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| 336 | }  | 
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| 337 | 		if ( isset( $prop['links'] ) ) { | 
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| 338 | $result_array['links'] = $this->formatLinks( $p_result->getLinks() );  | 
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| 339 | }  | 
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| 340 | 		if ( isset( $prop['templates'] ) ) { | 
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| 341 | $result_array['templates'] = $this->formatLinks( $p_result->getTemplates() );  | 
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| 342 | }  | 
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| 343 | 		if ( isset( $prop['images'] ) ) { | 
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| 344 | $result_array['images'] = array_keys( $p_result->getImages() );  | 
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| 345 | }  | 
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| 346 | 		if ( isset( $prop['externallinks'] ) ) { | 
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| 347 | $result_array['externallinks'] = array_keys( $p_result->getExternalLinks() );  | 
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| 348 | }  | 
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| 349 | 		if ( isset( $prop['sections'] ) ) { | 
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| 350 | $result_array['sections'] = $p_result->getSections();  | 
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| 351 | }  | 
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| 352 | |||
| 353 | 		if ( isset( $prop['displaytitle'] ) ) { | 
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| 354 | $result_array['displaytitle'] = $p_result->getDisplayTitle() ?:  | 
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| 355 | $titleObj->getPrefixedText();  | 
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| 356 | }  | 
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| 357 | |||
| 358 | 		if ( isset( $prop['headitems'] ) ) { | 
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| 359 | $result_array['headitems'] = $this->formatHeadItems( $p_result->getHeadItems() );  | 
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| 360 | $this->logFeatureUsage( 'action=parse&prop=headitems' );  | 
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| 361 | $this->setWarning( 'headitems is deprecated since MediaWiki 1.28. '  | 
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| 362 | . 'Use prop=headhtml when creating new HTML documents, or '  | 
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| 363 | . 'prop=modules|jsconfigvars when updating a document client-side.' );  | 
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| 364 | }  | 
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| 365 | |||
| 366 | 		if ( isset( $prop['headhtml'] ) ) { | 
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| 367 | $context = new DerivativeContext( $this->getContext() );  | 
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| 368 | $context->setTitle( $titleObj );  | 
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| 369 | $context->setWikiPage( $pageObj );  | 
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| 370 | |||
| 371 | // We need an OutputPage tied to $context, not to the  | 
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| 372 | // RequestContext at the root of the stack.  | 
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| 373 | $output = new OutputPage( $context );  | 
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| 374 | $output->addParserOutputMetadata( $p_result );  | 
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| 375 | |||
| 376 | $result_array['headhtml'] = $output->headElement( $context->getSkin() );  | 
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| 377 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'headhtml';  | 
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| 378 | }  | 
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| 379 | |||
| 380 | View Code Duplication | 		if ( isset( $prop['modules'] ) ) { | 
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| 381 | $result_array['modules'] = array_values( array_unique( $p_result->getModules() ) );  | 
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| 382 | $result_array['modulescripts'] = array_values( array_unique( $p_result->getModuleScripts() ) );  | 
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| 383 | $result_array['modulestyles'] = array_values( array_unique( $p_result->getModuleStyles() ) );  | 
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| 384 | }  | 
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| 385 | |||
| 386 | 		if ( isset( $prop['jsconfigvars'] ) ) { | 
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| 387 | $result_array['jsconfigvars'] =  | 
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| 388 | ApiResult::addMetadataToResultVars( $p_result->getJsConfigVars() );  | 
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| 389 | }  | 
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| 390 | |||
| 391 | View Code Duplication | 		if ( isset( $prop['encodedjsconfigvars'] ) ) { | 
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| 392 | $result_array['encodedjsconfigvars'] = FormatJson::encode(  | 
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| 393 | $p_result->getJsConfigVars(), false, FormatJson::ALL_OK  | 
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| 394 | );  | 
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| 395 | $result_array[ApiResult::META_SUBELEMENTS][] = 'encodedjsconfigvars';  | 
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| 396 | }  | 
            ||
| 397 | |||
| 398 | View Code Duplication | if ( isset( $prop['modules'] ) &&  | 
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| 399 | 			!isset( $prop['jsconfigvars'] ) && !isset( $prop['encodedjsconfigvars'] ) ) { | 
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| 400 | $this->setWarning( 'Property "modules" was set but not "jsconfigvars" ' .  | 
            ||
| 401 | 'or "encodedjsconfigvars". Configuration variables are necessary ' .  | 
            ||
| 402 | 'for proper module usage.' );  | 
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| 403 | }  | 
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| 404 | |||
| 405 | 		if ( isset( $prop['indicators'] ) ) { | 
            ||
| 406 | $result_array['indicators'] = (array)$p_result->getIndicators();  | 
            ||
| 407 | ApiResult::setArrayType( $result_array['indicators'], 'BCkvp', 'name' );  | 
            ||
| 408 | }  | 
            ||
| 409 | |||
| 410 | 		if ( isset( $prop['iwlinks'] ) ) { | 
            ||
| 411 | $result_array['iwlinks'] = $this->formatIWLinks( $p_result->getInterwikiLinks() );  | 
            ||
| 412 | }  | 
            ||
| 413 | |||
| 414 | 		if ( isset( $prop['wikitext'] ) ) { | 
            ||
| 415 | $result_array['wikitext'] = $this->content->serialize( $format );  | 
            ||
| 416 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'wikitext';  | 
            ||
| 417 | 			if ( !is_null( $this->pstContent ) ) { | 
            ||
| 418 | $result_array['psttext'] = $this->pstContent->serialize( $format );  | 
            ||
| 419 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'psttext';  | 
            ||
| 420 | }  | 
            ||
| 421 | }  | 
            ||
| 422 | 		if ( isset( $prop['properties'] ) ) { | 
            ||
| 423 | $result_array['properties'] = (array)$p_result->getProperties();  | 
            ||
| 424 | ApiResult::setArrayType( $result_array['properties'], 'BCkvp', 'name' );  | 
            ||
| 425 | }  | 
            ||
| 426 | |||
| 427 | 		if ( isset( $prop['limitreportdata'] ) ) { | 
            ||
| 428 | $result_array['limitreportdata'] =  | 
            ||
| 429 | $this->formatLimitReportData( $p_result->getLimitReportData() );  | 
            ||
| 430 | }  | 
            ||
| 431 | 		if ( isset( $prop['limitreporthtml'] ) ) { | 
            ||
| 432 | $result_array['limitreporthtml'] = EditPage::getPreviewLimitReport( $p_result );  | 
            ||
| 433 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'limitreporthtml';  | 
            ||
| 434 | }  | 
            ||
| 435 | |||
| 436 | 		if ( isset( $prop['parsetree'] ) || $params['generatexml'] ) { | 
            ||
| 437 | 			if ( $this->content->getModel() != CONTENT_MODEL_WIKITEXT ) { | 
            ||
| 438 | $this->dieUsage( 'parsetree is only supported for wikitext content', 'notwikitext' );  | 
            ||
| 439 | }  | 
            ||
| 440 | |||
| 441 | $wgParser->startExternalParse( $titleObj, $popts, Parser::OT_PREPROCESS );  | 
            ||
| 442 | $dom = $wgParser->preprocessToDom( $this->content->getNativeData() );  | 
            ||
| 443 | View Code Duplication | 			if ( is_callable( [ $dom, 'saveXML' ] ) ) { | 
            |
| 444 | $xml = $dom->saveXML();  | 
            ||
| 445 | 			} else { | 
            ||
| 446 | $xml = $dom->__toString();  | 
            ||
| 447 | }  | 
            ||
| 448 | $result_array['parsetree'] = $xml;  | 
            ||
| 449 | $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'parsetree';  | 
            ||
| 450 | }  | 
            ||
| 451 | |||
| 452 | $result_mapping = [  | 
            ||
| 453 | 'redirects' => 'r',  | 
            ||
| 454 | 'langlinks' => 'll',  | 
            ||
| 455 | 'categories' => 'cl',  | 
            ||
| 456 | 'links' => 'pl',  | 
            ||
| 457 | 'templates' => 'tl',  | 
            ||
| 458 | 'images' => 'img',  | 
            ||
| 459 | 'externallinks' => 'el',  | 
            ||
| 460 | 'iwlinks' => 'iw',  | 
            ||
| 461 | 'sections' => 's',  | 
            ||
| 462 | 'headitems' => 'hi',  | 
            ||
| 463 | 'modules' => 'm',  | 
            ||
| 464 | 'indicators' => 'ind',  | 
            ||
| 465 | 'modulescripts' => 'm',  | 
            ||
| 466 | 'modulestyles' => 'm',  | 
            ||
| 467 | 'properties' => 'pp',  | 
            ||
| 468 | 'limitreportdata' => 'lr',  | 
            ||
| 469 | ];  | 
            ||
| 470 | $this->setIndexedTagNames( $result_array, $result_mapping );  | 
            ||
| 471 | $result->addValue( null, $this->getModuleName(), $result_array );  | 
            ||
| 472 | }  | 
            ||
| 473 | |||
| 474 | /**  | 
            ||
| 475 | * Constructs a ParserOptions object  | 
            ||
| 476 | *  | 
            ||
| 477 | * @param WikiPage $pageObj  | 
            ||
| 478 | * @param array $params  | 
            ||
| 479 | *  | 
            ||
| 480 | * @return array [ ParserOptions, ScopedCallback, bool $suppressCache ]  | 
            ||
| 481 | */  | 
            ||
| 482 | 	protected function makeParserOptions( WikiPage $pageObj, array $params ) { | 
            ||
| 483 | $popts = $pageObj->makeParserOptions( $this->getContext() );  | 
            ||
| 484 | $popts->enableLimitReport( !$params['disablepp'] && !$params['disablelimitreport'] );  | 
            ||
| 485 | $popts->setIsPreview( $params['preview'] || $params['sectionpreview'] );  | 
            ||
| 486 | $popts->setIsSectionPreview( $params['sectionpreview'] );  | 
            ||
| 487 | $popts->setEditSection( !$params['disableeditsection'] );  | 
            ||
| 488 | 		if ( $params['disabletidy'] ) { | 
            ||
| 489 | $popts->setTidy( false );  | 
            ||
| 490 | }  | 
            ||
| 491 | |||
| 492 | $reset = null;  | 
            ||
| 493 | $suppressCache = false;  | 
            ||
| 494 | Hooks::run( 'ApiMakeParserOptions',  | 
            ||
| 495 | [ $popts, $pageObj->getTitle(), $params, $this, &$reset, &$suppressCache ] );  | 
            ||
| 496 | |||
| 497 | return [ $popts, $reset, $suppressCache ];  | 
            ||
| 498 | }  | 
            ||
| 499 | |||
| 500 | /**  | 
            ||
| 501 | * @param WikiPage $page  | 
            ||
| 502 | * @param ParserOptions $popts  | 
            ||
| 503 | * @param int $pageId  | 
            ||
| 504 | * @param bool $getWikitext  | 
            ||
| 505 | * @return ParserOutput  | 
            ||
| 506 | */  | 
            ||
| 507 | 	private function getParsedContent( WikiPage $page, $popts, $pageId = null, $getWikitext = false ) { | 
            ||
| 508 | $this->content = $this->getContent( $page, $pageId );  | 
            ||
| 509 | |||
| 510 | 		if ( $this->section !== false && $this->content !== null ) { | 
            ||
| 511 | // Not cached (save or load)  | 
            ||
| 512 | return $this->content->getParserOutput( $page->getTitle(), null, $popts );  | 
            ||
| 513 | }  | 
            ||
| 514 | |||
| 515 | // Try the parser cache first  | 
            ||
| 516 | // getParserOutput will save to Parser cache if able  | 
            ||
| 517 | $pout = $page->getParserOutput( $popts );  | 
            ||
| 518 | 		if ( !$pout ) { | 
            ||
| 519 | 			$this->dieUsage( "There is no revision ID {$page->getLatest()}", 'missingrev' ); | 
            ||
| 520 | }  | 
            ||
| 521 | 		if ( $getWikitext ) { | 
            ||
| 522 | $this->content = $page->getContent( Revision::RAW );  | 
            ||
| 523 | }  | 
            ||
| 524 | |||
| 525 | return $pout;  | 
            ||
| 526 | }  | 
            ||
| 527 | |||
| 528 | /**  | 
            ||
| 529 | * Get the content for the given page and the requested section.  | 
            ||
| 530 | *  | 
            ||
| 531 | * @param WikiPage $page  | 
            ||
| 532 | * @param int $pageId  | 
            ||
| 533 | * @return Content  | 
            ||
| 534 | */  | 
            ||
| 535 | 	private function getContent( WikiPage $page, $pageId = null ) { | 
            ||
| 536 | $content = $page->getContent( Revision::RAW ); // XXX: really raw?  | 
            ||
| 537 | |||
| 538 | 		if ( $this->section !== false && $content !== null ) { | 
            ||
| 539 | $content = $this->getSectionContent(  | 
            ||
| 540 | $content,  | 
            ||
| 541 | !is_null( $pageId ) ? 'page id ' . $pageId : $page->getTitle()->getPrefixedText()  | 
            ||
| 542 | );  | 
            ||
| 543 | }  | 
            ||
| 544 | return $content;  | 
            ||
| 545 | }  | 
            ||
| 546 | |||
| 547 | /**  | 
            ||
| 548 | * Extract the requested section from the given Content  | 
            ||
| 549 | *  | 
            ||
| 550 | * @param Content $content  | 
            ||
| 551 | * @param string $what Identifies the content in error messages, e.g. page title.  | 
            ||
| 552 | * @return Content|bool  | 
            ||
| 553 | */  | 
            ||
| 554 | 	private function getSectionContent( Content $content, $what ) { | 
            ||
| 555 | // Not cached (save or load)  | 
            ||
| 556 | $section = $content->getSection( $this->section );  | 
            ||
| 557 | 		if ( $section === false ) { | 
            ||
| 558 | 			$this->dieUsage( "There is no section {$this->section} in $what", 'nosuchsection' ); | 
            ||
| 559 | }  | 
            ||
| 560 | 		if ( $section === null ) { | 
            ||
| 561 | $this->dieUsage( "Sections are not supported by $what", 'nosuchsection' );  | 
            ||
| 562 | $section = false;  | 
            ||
| 563 | }  | 
            ||
| 564 | |||
| 565 | return $section;  | 
            ||
| 566 | }  | 
            ||
| 567 | |||
| 568 | /**  | 
            ||
| 569 | * This mimicks the behavior of EditPage in formatting a summary  | 
            ||
| 570 | *  | 
            ||
| 571 | * @param Title $title of the page being parsed  | 
            ||
| 572 | * @param Array $params the API parameters of the request  | 
            ||
| 573 | * @return Content|bool  | 
            ||
| 574 | */  | 
            ||
| 575 | 	private function formatSummary( $title, $params ) { | 
            ||
| 576 | global $wgParser;  | 
            ||
| 577 | $summary = !is_null( $params['summary'] ) ? $params['summary'] : '';  | 
            ||
| 578 | $sectionTitle = !is_null( $params['sectiontitle'] ) ? $params['sectiontitle'] : '';  | 
            ||
| 579 | |||
| 580 | 		if ( $this->section === 'new' && ( $sectionTitle === '' || $summary === '' ) ) { | 
            ||
| 581 | 			if ( $sectionTitle !== '' ) { | 
            ||
| 582 | $summary = $params['sectiontitle'];  | 
            ||
| 583 | }  | 
            ||
| 584 | 			if ( $summary !== '' ) { | 
            ||
| 585 | $summary = wfMessage( 'newsectionsummary' )  | 
            ||
| 586 | ->rawParams( $wgParser->stripSectionName( $summary ) )  | 
            ||
| 587 | ->inContentLanguage()->text();  | 
            ||
| 588 | }  | 
            ||
| 589 | }  | 
            ||
| 590 | return Linker::formatComment( $summary, $title, $this->section === 'new' );  | 
            ||
| 591 | }  | 
            ||
| 592 | |||
| 593 | 	private function formatLangLinks( $links ) { | 
            ||
| 594 | $result = [];  | 
            ||
| 595 | 		foreach ( $links as $link ) { | 
            ||
| 596 | $entry = [];  | 
            ||
| 597 | $bits = explode( ':', $link, 2 );  | 
            ||
| 598 | $title = Title::newFromText( $link );  | 
            ||
| 599 | |||
| 600 | $entry['lang'] = $bits[0];  | 
            ||
| 601 | 			if ( $title ) { | 
            ||
| 602 | $entry['url'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );  | 
            ||
| 603 | // localised language name in 'uselang' language  | 
            ||
| 604 | $entry['langname'] = Language::fetchLanguageName(  | 
            ||
| 605 | $title->getInterwiki(),  | 
            ||
| 606 | $this->getLanguage()->getCode()  | 
            ||
| 607 | );  | 
            ||
| 608 | |||
| 609 | // native language name  | 
            ||
| 610 | $entry['autonym'] = Language::fetchLanguageName( $title->getInterwiki() );  | 
            ||
| 611 | }  | 
            ||
| 612 | ApiResult::setContentValue( $entry, 'title', $bits[1] );  | 
            ||
| 613 | $result[] = $entry;  | 
            ||
| 614 | }  | 
            ||
| 615 | |||
| 616 | return $result;  | 
            ||
| 617 | }  | 
            ||
| 618 | |||
| 619 | 	private function formatCategoryLinks( $links ) { | 
            ||
| 620 | $result = [];  | 
            ||
| 621 | |||
| 622 | 		if ( !$links ) { | 
            ||
| 623 | return $result;  | 
            ||
| 624 | }  | 
            ||
| 625 | |||
| 626 | // Fetch hiddencat property  | 
            ||
| 627 | $lb = new LinkBatch;  | 
            ||
| 628 | $lb->setArray( [ NS_CATEGORY => $links ] );  | 
            ||
| 629 | $db = $this->getDB();  | 
            ||
| 630 | $res = $db->select( [ 'page', 'page_props' ],  | 
            ||
| 631 | [ 'page_title', 'pp_propname' ],  | 
            ||
| 632 | $lb->constructSet( 'page', $db ),  | 
            ||
| 633 | __METHOD__,  | 
            ||
| 634 | [],  | 
            ||
| 635 | [ 'page_props' => [  | 
            ||
| 636 | 'LEFT JOIN', [ 'pp_propname' => 'hiddencat', 'pp_page = page_id' ]  | 
            ||
| 637 | ] ]  | 
            ||
| 638 | );  | 
            ||
| 639 | $hiddencats = [];  | 
            ||
| 640 | 		foreach ( $res as $row ) { | 
            ||
| 641 | $hiddencats[$row->page_title] = isset( $row->pp_propname );  | 
            ||
| 642 | }  | 
            ||
| 643 | |||
| 644 | $linkCache = LinkCache::singleton();  | 
            ||
| 645 | |||
| 646 | 		foreach ( $links as $link => $sortkey ) { | 
            ||
| 647 | $entry = [];  | 
            ||
| 648 | $entry['sortkey'] = $sortkey;  | 
            ||
| 649 | // array keys will cast numeric category names to ints, so cast back to string  | 
            ||
| 650 | ApiResult::setContentValue( $entry, 'category', (string)$link );  | 
            ||
| 651 | 			if ( !isset( $hiddencats[$link] ) ) { | 
            ||
| 652 | $entry['missing'] = true;  | 
            ||
| 653 | |||
| 654 | // We already know the link doesn't exist in the database, so  | 
            ||
| 655 | // tell LinkCache that before calling $title->isKnown().  | 
            ||
| 656 | $title = Title::makeTitle( NS_CATEGORY, $link );  | 
            ||
| 657 | $linkCache->addBadLinkObj( $title );  | 
            ||
| 658 | 				if ( $title->isKnown() ) { | 
            ||
| 659 | $entry['known'] = true;  | 
            ||
| 660 | }  | 
            ||
| 661 | 			} elseif ( $hiddencats[$link] ) { | 
            ||
| 662 | $entry['hidden'] = true;  | 
            ||
| 663 | }  | 
            ||
| 664 | $result[] = $entry;  | 
            ||
| 665 | }  | 
            ||
| 666 | |||
| 667 | return $result;  | 
            ||
| 668 | }  | 
            ||
| 669 | |||
| 670 | 	private function categoriesHtml( $categories ) { | 
            ||
| 671 | $context = $this->getContext();  | 
            ||
| 672 | $context->getOutput()->addCategoryLinks( $categories );  | 
            ||
| 673 | |||
| 674 | return $context->getSkin()->getCategories();  | 
            ||
| 675 | }  | 
            ||
| 676 | |||
| 677 | 	private function formatLinks( $links ) { | 
            ||
| 678 | $result = [];  | 
            ||
| 679 | 		foreach ( $links as $ns => $nslinks ) { | 
            ||
| 680 | 			foreach ( $nslinks as $title => $id ) { | 
            ||
| 681 | $entry = [];  | 
            ||
| 682 | $entry['ns'] = $ns;  | 
            ||
| 683 | ApiResult::setContentValue( $entry, 'title', Title::makeTitle( $ns, $title )->getFullText() );  | 
            ||
| 684 | $entry['exists'] = $id != 0;  | 
            ||
| 685 | $result[] = $entry;  | 
            ||
| 686 | }  | 
            ||
| 687 | }  | 
            ||
| 688 | |||
| 689 | return $result;  | 
            ||
| 690 | }  | 
            ||
| 691 | |||
| 692 | 	private function formatIWLinks( $iw ) { | 
            ||
| 693 | $result = [];  | 
            ||
| 694 | 		foreach ( $iw as $prefix => $titles ) { | 
            ||
| 695 | 			foreach ( array_keys( $titles ) as $title ) { | 
            ||
| 696 | $entry = [];  | 
            ||
| 697 | $entry['prefix'] = $prefix;  | 
            ||
| 698 | |||
| 699 | 				$title = Title::newFromText( "{$prefix}:{$title}" ); | 
            ||
| 700 | 				if ( $title ) { | 
            ||
| 701 | $entry['url'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );  | 
            ||
| 702 | }  | 
            ||
| 703 | |||
| 704 | ApiResult::setContentValue( $entry, 'title', $title->getFullText() );  | 
            ||
| 705 | $result[] = $entry;  | 
            ||
| 706 | }  | 
            ||
| 707 | }  | 
            ||
| 708 | |||
| 709 | return $result;  | 
            ||
| 710 | }  | 
            ||
| 711 | |||
| 712 | 	private function formatHeadItems( $headItems ) { | 
            ||
| 713 | $result = [];  | 
            ||
| 714 | 		foreach ( $headItems as $tag => $content ) { | 
            ||
| 715 | $entry = [];  | 
            ||
| 716 | $entry['tag'] = $tag;  | 
            ||
| 717 | ApiResult::setContentValue( $entry, 'content', $content );  | 
            ||
| 718 | $result[] = $entry;  | 
            ||
| 719 | }  | 
            ||
| 720 | |||
| 721 | return $result;  | 
            ||
| 722 | }  | 
            ||
| 723 | |||
| 724 | 	private function formatLimitReportData( $limitReportData ) { | 
            ||
| 740 | |||
| 741 | 	private function setIndexedTagNames( &$array, $mapping ) { | 
            ||
| 748 | |||
| 749 | 	public function getAllowedParams() { | 
            ||
| 829 | |||
| 830 | 	protected function getExamplesMessages() { | 
            ||
| 842 | |||
| 843 | 	public function getHelpUrls() { | 
            ||
| 846 | }  | 
            ||
| 847 | 
This check looks for assignments to scalar types that may be of the wrong type.
To ensure the code behaves as expected, it may be a good idea to add an explicit type cast.