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  * @addtogroup 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 = $params['page'];
  46                 if(!is_null($page) && (!is_null($text) || $title != "API"))
  47                         $this->dieUsage("The page parameter cannot be used together with the text and title parameters", 'params');
  48                 $prop = array_flip($params['prop']);
  49                 $revid = false;
  50
  51                 global $wgParser, $wgUser;
  52                 if(!is_null($page)) {
  53                         $titleObj = Title::newFromText($page);
  54                         if(!$titleObj)
  55                                 $this->dieUsage("The page you specified doesn't exist", 'missingtitle');
  56
  57                         // Try the parser cache first
  58                         $articleObj = new Article($titleObj);
  59                         if(isset($prop['revid']))
  60                                 $revid = $articleObj->getRevIdFetched();
  61                         $pcache =& ParserCache::singleton();
  62                         $p_result = $pcache->get($articleObj, $wgUser);
  63                         if(!$p_result) {
  64                                 $p_result = $wgParser->parse($articleObj->getContent(), $titleObj, new ParserOptions());
  65                                 global $wgUseParserCache;
  66                                 if($wgUseParserCache)
  67                                         $pcache->save($p_result, $articleObj, $wgUser);
  68                         }
  69                 } else {
  70                         $titleObj = Title::newFromText($title);
  71                         if(!$titleObj)
  72                                 $titleObj = Title::newFromText("API");
  73                         $p_result = $wgParser->parse($text, $titleObj, new ParserOptions());
  74                 }
  75
  76                 // Return result
  77                 $result = $this->getResult();
  78                 $result_array = array();
  79                 if(isset($prop['text'])) {
  80                         $result_array['text'] = array();
  81                         $result->setContent($result_array['text'], $p_result->getText());
  82                 }
  83                 if(isset($prop['langlinks']))
  84                         $result_array['langlinks'] = $this->formatLangLinks($p_result->getLanguageLinks());
  85                 if(isset($prop['categories']))
  86                         $result_array['categories'] = $this->formatCategoryLinks($p_result->getCategories());
  87                 if(isset($prop['links']))
  88                         $result_array['links'] = $this->formatLinks($p_result->getLinks());
  89                 if(isset($prop['templates']))
  90                         $result_array['templates'] = $this->formatLinks($p_result->getTemplates());
  91                 if(isset($prop['images']))
  92                         $result_array['images'] = array_keys($p_result->getImages());
  93                 if(isset($prop['externallinks']))
  94                         $result_array['externallinks'] = array_keys($p_result->getExternalLinks());
  95                 if(isset($prop['sections']))
  96                         $result_array['sections'] = $p_result->getSections();
  97                 if($revid !== false)
  98                         $result_array['revid'] = $revid;
  99
 100                 $result_mapping = array(
 101                         'langlinks' => 'll',
 102                         'categories' => 'cl',
 103                         'links' => 'pl',
 104                         'templates' => 'tl',
 105                         'images' => 'img',
 106                         'externallinks' => 'el',
 107                         'sections' => 's',
 108                 );
 109                 $this->setIndexedTagNames( $result_array, $result_mapping );
 110                 $result->addValue( null, $this->getModuleName(), $result_array );
 111         }
 112
 113         private function formatLangLinks( $links ) {
 114                 $result = array();
 115                 foreach( $links as $link ) {
 116                         $entry = array();
 117                         $bits = split( ':', $link, 2 );
 118                         $entry['lang'] = $bits[0];
 119                         $this->getResult()->setContent( $entry, $bits[1] );
 120                         $result[] = $entry;
 121                 }
 122                 return $result;
 123         }
 124
 125         private function formatCategoryLinks( $links ) {
 126                 $result = array();
 127                 foreach( $links as $link => $sortkey ) {
 128                         $entry = array();
 129                         $entry['sortkey'] = $sortkey;
 130                         $this->getResult()->setContent( $entry, $link );
 131                         $result[] = $entry;
 132                 }
 133                 return $result;
 134         }
 135
 136         private function formatLinks( $links ) {
 137                 $result = array();
 138                 foreach( $links as $ns => $nslinks ) {
 139                         foreach( $nslinks as $title => $id ) {
 140                                 $entry = array();
 141                                 $entry['ns'] = $ns;
 142                                 $this->getResult()->setContent( $entry, Title::makeTitle( $ns, $title )->getFullText() );
 143                                 if( $id != 0 )
 144                                         $entry['exists'] = '';
 145                                 $result[] = $entry;
 146                         }
 147                 }
 148                 return $result;
 149         }
 150
 151         private function setIndexedTagNames( &$array, $mapping ) {
 152                 foreach( $mapping as $key => $name ) {
 153                         if( isset( $array[$key] ) )
 154                                 $this->getResult()->setIndexedTagName( $array[$key], $name );
 155                 }
 156         }
 157
 158         public function getAllowedParams() {
 159                 return array (
 160                         'title' => array(
 161                                 ApiBase :: PARAM_DFLT => 'API',
 162                         ),
 163                         'text' => null,
 164                         'page' => null,
 165                         'prop' => array(
 166                                 ApiBase :: PARAM_DFLT => 'text|langlinks|categories|links|templates|images|externallinks|sections|revid',
 167                                 ApiBase :: PARAM_ISMULTI => true,
 168                                 ApiBase :: PARAM_TYPE => array(
 169                                         'text',
 170                                         'langlinks',
 171                                         'categories',
 172                                         'links',
 173                                         'templates',
 174                                         'images',
 175                                         'externallinks',
 176                                         'sections',
 177                                         'revid'
 178                                 )
 179                         )
 180                 );
 181         }
 182
 183         public function getParamDescription() {
 184                 return array (
 185                         'text' => 'Wikitext to parse',
 186                         'title' => 'Title of page the text belongs to',
 187                         'page' => 'Parse the content of this page. Cannot be used together with text and title',
 188                         'prop' => array('Which pieces of information to get.',
 189                                         'NOTE: Section tree is only generated if there are more than 4 sections, or if the __TOC__ keyword is present'
 190                         ),
 191                 );
 192         }
 193
 194         public function getDescription() {
 195                 return 'This module parses wikitext and returns parser output';
 196         }
 197
 198         protected function getExamples() {
 199                 return array (
 200                         'api.php?action=parse&text={{Project:Sandbox}}'
 201                 );
 202         }
 203
 204         public function getVersion() {
 205                 return __CLASS__ . ': $Id$';
 206         }
 207 }
 208