includes/api/ApiParse.php

   1 <?php
   2
   3 /*
   4  * Created on Dec 01, 2007
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 2007 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  */
  25
  26 if (!defined('MEDIAWIKI')) {
  27         // Eclipse helper - will be ignored in production
  28         require_once ("ApiBase.php");
  29 }
  30
  31 /**
  32  * @ingroup API
  33  */
  34 class ApiParse extends ApiBase {
  35
  36         public function __construct($main, $action) {
  37                 parent :: __construct($main, $action);
  38         }
  39
  40         public function execute() {
  41                 // Get parameters
  42                 $params = $this->extractRequestParams();
  43                 $text = $params['text'];
  44                 $title = $params['title'];
  45                 $page = $params['page'];
  46                 $oldid = $params['oldid'];
  47                 if(!is_null($page) && (!is_null($text) || $title != "API"))
  48                         $this->dieUsage("The page parameter cannot be used together with the text and title parameters", 'params');
  49                 $prop = array_flip($params['prop']);
  50                 $revid = false;
  51
  52                 global $wgParser, $wgUser;
  53                 if(!is_null($oldid) || !is_null($page))
  54                 {
  55                         if(!is_null($oldid))
  56                         {
  57                                 # Don't use the parser cache
  58                                 $rev = Revision::newFromID($oldid);
  59                                 if(!$rev)
  60                                         $this->dieUsage("There is no revision ID $oldid", 'missingrev');
  61                                 if(!$rev->userCan(Revision::DELETED_TEXT))
  62                                         $this->dieUsage("You don't have permission to view deleted revisions", 'permissiondenied');
  63                                 $text = $rev->getRawText();
  64                                 $titleObj = $rev->getTitle();
  65                                 $p_result = $wgParser->parse($text, $titleObj, new ParserOptions());
  66                         }
  67                         else
  68                         {
  69                                 $titleObj = Title::newFromText($page);
  70                                 if(!$titleObj)
  71                                         $this->dieUsage("The page you specified doesn't exist", 'missingtitle');
  72
  73                                 // Try the parser cache first
  74                                 $articleObj = new Article($titleObj);
  75                                 if(isset($prop['revid']))
  76                                         $oldid = $articleObj->getRevIdFetched();
  77                                 $pcache = ParserCache::singleton();
  78                                 $p_result = $pcache->get($articleObj, $wgUser);
  79                                 if(!$p_result) {
  80                                         $p_result = $wgParser->parse($articleObj->getContent(), $titleObj, new ParserOptions());
  81                                         global $wgUseParserCache;
  82                                         if($wgUseParserCache)
  83                                                 $pcache->save($p_result, $articleObj, $wgUser);
  84                                 }
  85                         }
  86                 }
  87                 else
  88                 {
  89                         $titleObj = Title::newFromText($title);
  90                         if(!$titleObj)
  91                                 $titleObj = Title::newFromText("API");
  92                         $p_result = $wgParser->parse($text, $titleObj, new ParserOptions());
  93                 }
  94
  95                 // Return result
  96                 $result = $this->getResult();
  97                 $result_array = array();
  98                 if(isset($prop['text'])) {
  99                         $result_array['text'] = array();
 100                         $result->setContent($result_array['text'], $p_result->getText());
 101                 }
 102                 if(isset($prop['langlinks']))
 103                         $result_array['langlinks'] = $this->formatLangLinks($p_result->getLanguageLinks());
 104                 if(isset($prop['categories']))
 105                         $result_array['categories'] = $this->formatCategoryLinks($p_result->getCategories());
 106                 if(isset($prop['links']))
 107                         $result_array['links'] = $this->formatLinks($p_result->getLinks());
 108                 if(isset($prop['templates']))
 109                         $result_array['templates'] = $this->formatLinks($p_result->getTemplates());
 110                 if(isset($prop['images']))
 111                         $result_array['images'] = array_keys($p_result->getImages());
 112                 if(isset($prop['externallinks']))
 113                         $result_array['externallinks'] = array_keys($p_result->getExternalLinks());
 114                 if(isset($prop['sections']))
 115                         $result_array['sections'] = $p_result->getSections();
 116                 if($oldid !== false)
 117                         $result_array['revid'] = $oldid;
 118
 119                 $result_mapping = array(
 120                         'langlinks' => 'll',
 121                         'categories' => 'cl',
 122                         'links' => 'pl',
 123                         'templates' => 'tl',
 124                         'images' => 'img',
 125                         'externallinks' => 'el',
 126                         'sections' => 's',
 127                 );
 128                 $this->setIndexedTagNames( $result_array, $result_mapping );
 129                 $result->addValue( null, $this->getModuleName(), $result_array );
 130         }
 131
 132         private function formatLangLinks( $links ) {
 133                 $result = array();
 134                 foreach( $links as $link ) {
 135                         $entry = array();
 136                         $bits = split( ':', $link, 2 );
 137                         $entry['lang'] = $bits[0];
 138                         $this->getResult()->setContent( $entry, $bits[1] );
 139                         $result[] = $entry;
 140                 }
 141                 return $result;
 142         }
 143
 144         private function formatCategoryLinks( $links ) {
 145                 $result = array();
 146                 foreach( $links as $link => $sortkey ) {
 147                         $entry = array();
 148                         $entry['sortkey'] = $sortkey;
 149                         $this->getResult()->setContent( $entry, $link );
 150                         $result[] = $entry;
 151                 }
 152                 return $result;
 153         }
 154
 155         private function formatLinks( $links ) {
 156                 $result = array();
 157                 foreach( $links as $ns => $nslinks ) {
 158                         foreach( $nslinks as $title => $id ) {
 159                                 $entry = array();
 160                                 $entry['ns'] = $ns;
 161                                 $this->getResult()->setContent( $entry, Title::makeTitle( $ns, $title )->getFullText() );
 162                                 if( $id != 0 )
 163                                         $entry['exists'] = '';
 164                                 $result[] = $entry;
 165                         }
 166                 }
 167                 return $result;
 168         }
 169
 170         private function setIndexedTagNames( &$array, $mapping ) {
 171                 foreach( $mapping as $key => $name ) {
 172                         if( isset( $array[$key] ) )
 173                                 $this->getResult()->setIndexedTagName( $array[$key], $name );
 174                 }
 175         }
 176
 177         public function getAllowedParams() {
 178                 return array (
 179                         'title' => array(
 180                                 ApiBase :: PARAM_DFLT => 'API',
 181                         ),
 182                         'text' => null,
 183                         'page' => null,
 184                         'oldid' => null,
 185                         'prop' => array(
 186                                 ApiBase :: PARAM_DFLT => 'text|langlinks|categories|links|templates|images|externallinks|sections|revid',
 187                                 ApiBase :: PARAM_ISMULTI => true,
 188                                 ApiBase :: PARAM_TYPE => array(
 189                                         'text',
 190                                         'langlinks',
 191                                         'categories',
 192                                         'links',
 193                                         'templates',
 194                                         'images',
 195                                         'externallinks',
 196                                         'sections',
 197                                         'revid'
 198                                 )
 199                         )
 200                 );
 201         }
 202
 203         public function getParamDescription() {
 204                 return array (
 205                         'text' => 'Wikitext to parse',
 206                         'title' => 'Title of page the text belongs to',
 207                         'page' => 'Parse the content of this page. Cannot be used together with text and title',
 208                         'oldid' => 'Parse the content of this revision. Overrides page',
 209                         'prop' => array('Which pieces of information to get.',
 210                                         'NOTE: Section tree is only generated if there are more than 4 sections, or if the __TOC__ keyword is present'
 211                         ),
 212                 );
 213         }
 214
 215         public function getDescription() {
 216                 return 'This module parses wikitext and returns parser output';
 217         }
 218
 219         protected function getExamples() {
 220                 return array (
 221                         'api.php?action=parse&text={{Project:Sandbox}}'
 222                 );
 223         }
 224
 225         public function getVersion() {
 226                 return __CLASS__ . ': $Id$';
 227         }
 228 }