includes/api/ApiParse.php

   1 <?php
   2 /**
   3  * Created on Dec 01, 2007
   4  *
   5  * Copyright © 2007 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  */
  24
  25 /**
  26  * @ingroup API
  27  */
  28 class ApiParse extends ApiBase {
  29
  30         /** @var string $section */
  31         private $section = null;
  32
  33         /** @var Content $content */
  34         private $content = null;
  35
  36         /** @var Content $pstContent */
  37         private $pstContent = null;
  38
  39         public function execute() {
  40                 // The data is hot but user-dependent, like page views, so we set vary cookies
  41                 $this->getMain()->setCacheMode( 'anon-public-user-private' );
  42
  43                 // Get parameters
  44                 $params = $this->extractRequestParams();
  45                 $text = $params['text'];
  46                 $title = $params['title'];
  47                 if ( $title === null ) {
  48                         $titleProvided = false;
  49                         // A title is needed for parsing, so arbitrarily choose one
  50                         $title = 'API';
  51                 } else {
  52                         $titleProvided = true;
  53                 }
  54
  55                 $page = $params['page'];
  56                 $pageid = $params['pageid'];
  57                 $oldid = $params['oldid'];
  58
  59                 $model = $params['contentmodel'];
  60                 $format = $params['contentformat'];
  61
  62                 if ( !is_null( $page ) && ( !is_null( $text ) || $titleProvided ) ) {
  63                         $this->dieUsage(
  64                                 'The page parameter cannot be used together with the text and title parameters',
  65                                 'params'
  66                         );
  67                 }
  68
  69                 $prop = array_flip( $params['prop'] );
  70
  71                 if ( isset( $params['section'] ) ) {
  72                         $this->section = $params['section'];
  73                         if ( !preg_match( '/^((T-)?\d+|new)$/', $this->section ) ) {
  74                                 $this->dieUsage(
  75                                         'The section parameter must be a valid section id or "new"', 'invalidsection'
  76                                 );
  77                         }
  78                 } else {
  79                         $this->section = false;
  80                 }
  81
  82                 // The parser needs $wgTitle to be set, apparently the
  83                 // $title parameter in Parser::parse isn't enough *sigh*
  84                 // TODO: Does this still need $wgTitle?
  85                 global $wgParser, $wgTitle;
  86
  87                 $redirValues = null;
  88
  89                 // Return result
  90                 $result = $this->getResult();
  91
  92                 if ( !is_null( $oldid ) || !is_null( $pageid ) || !is_null( $page ) ) {
  93                         if ( $this->section === 'new' ) {
  94                                         $this->dieUsage(
  95                                                 'section=new cannot be combined with oldid, pageid or page parameters. ' .
  96                                                 'Please use text', 'params'
  97                                         );
  98                         }
  99                         if ( !is_null( $oldid ) ) {
 100                                 // Don't use the parser cache
 101                                 $rev = Revision::newFromId( $oldid );
 102                                 if ( !$rev ) {
 103                                         $this->dieUsage( "There is no revision ID $oldid", 'missingrev' );
 104                                 }
 105                                 if ( !$rev->userCan( Revision::DELETED_TEXT, $this->getUser() ) ) {
 106                                         $this->dieUsage( "You don't have permission to view deleted revisions", 'permissiondenied' );
 107                                 }
 108
 109                                 $titleObj = $rev->getTitle();
 110                                 $wgTitle = $titleObj;
 111                                 $pageObj = WikiPage::factory( $titleObj );
 112                                 list( $popts, $reset, $suppressCache ) = $this->makeParserOptions( $pageObj, $params );
 113
 114                                 // If for some reason the "oldid" is actually the current revision, it may be cached
 115                                 // Deliberately comparing $pageObj->getLatest() with $rev->getId(), rather than
 116                                 // checking $rev->isCurrent(), because $pageObj is what actually ends up being used,
 117                                 // and if its ->getLatest() is outdated, $rev->isCurrent() won't tell us that.
 118                                 if ( !$suppressCache && $rev->getId() == $pageObj->getLatest() ) {
 119                                         // May get from/save to parser cache
 120                                         $p_result = $this->getParsedContent( $pageObj, $popts,
 121                                                 $pageid, isset( $prop['wikitext'] ) );
 122                                 } else { // This is an old revision, so get the text differently
 123                                         $this->content = $rev->getContent( Revision::FOR_THIS_USER, $this->getUser() );
 124
 125                                         if ( $this->section !== false ) {
 126                                                 $this->content = $this->getSectionContent( $this->content, 'r' . $rev->getId() );
 127                                         }
 128
 129                                         // Should we save old revision parses to the parser cache?
 130                                         $p_result = $this->content->getParserOutput( $titleObj, $rev->getId(), $popts );
 131                                 }
 132                         } else { // Not $oldid, but $pageid or $page
 133                                 if ( $params['redirects'] ) {
 134                                         $reqParams = [
 135                                                 'redirects' => '',
 136                                         ];
 137                                         if ( !is_null( $pageid ) ) {
 138                                                 $reqParams['pageids'] = $pageid;
 139                                         } else { // $page
 140                                                 $reqParams['titles'] = $page;
 141                                         }
 142                                         $req = new FauxRequest( $reqParams );
 143                                         $main = new ApiMain( $req );
 144                                         $pageSet = new ApiPageSet( $main );
 145                                         $pageSet->execute();
 146                                         $redirValues = $pageSet->getRedirectTitlesAsResult( $this->getResult() );
 147
 148                                         $to = $page;
 149                                         foreach ( $pageSet->getRedirectTitles() as $title ) {
 150                                                 $to = $title->getFullText();
 151                                         }
 152                                         $pageParams = [ 'title' => $to ];
 153                                 } elseif ( !is_null( $pageid ) ) {
 154                                         $pageParams = [ 'pageid' => $pageid ];
 155                                 } else { // $page
 156                                         $pageParams = [ 'title' => $page ];
 157                                 }
 158
 159                                 $pageObj = $this->getTitleOrPageId( $pageParams, 'fromdb' );
 160                                 $titleObj = $pageObj->getTitle();
 161                                 if ( !$titleObj || !$titleObj->exists() ) {
 162                                         $this->dieUsage( "The page you specified doesn't exist", 'missingtitle' );
 163                                 }
 164                                 $wgTitle = $titleObj;
 165
 166                                 if ( isset( $prop['revid'] ) ) {
 167                                         $oldid = $pageObj->getLatest();
 168                                 }
 169
 170                                 list( $popts, $reset, $suppressCache ) = $this->makeParserOptions( $pageObj, $params );
 171
 172                                 // Don't pollute the parser cache when setting options that aren't
 173                                 // in ParserOptions::optionsHash()
 174                                 /// @todo: This should be handled closer to the actual cache instead of here, see T110269
 175                                 $suppressCache = $suppressCache ||
 176                                         $params['disablepp'] ||
 177                                         $params['disablelimitreport'] ||
 178                                         $params['preview'] ||
 179                                         $params['sectionpreview'] ||
 180                                         $params['disabletidy'];
 181
 182                                 if ( $suppressCache ) {
 183                                         $this->content = $this->getContent( $pageObj, $pageid );
 184                                         $p_result = $this->content->getParserOutput( $titleObj, null, $popts );
 185                                 } else {
 186                                         // Potentially cached
 187                                         $p_result = $this->getParsedContent( $pageObj, $popts, $pageid,
 188                                                 isset( $prop['wikitext'] ) );
 189                                 }
 190                         }
 191                 } else { // Not $oldid, $pageid, $page. Hence based on $text
 192                         $titleObj = Title::newFromText( $title );
 193                         if ( !$titleObj || $titleObj->isExternal() ) {
 194                                 $this->dieUsageMsg( [ 'invalidtitle', $title ] );
 195                         }
 196                         $wgTitle = $titleObj;
 197                         if ( $titleObj->canExist() ) {
 198                                 $pageObj = WikiPage::factory( $titleObj );
 199                         } else {
 200                                 // Do like MediaWiki::initializeArticle()
 201                                 $article = Article::newFromTitle( $titleObj, $this->getContext() );
 202                                 $pageObj = $article->getPage();
 203                         }
 204
 205                         list( $popts, $reset ) = $this->makeParserOptions( $pageObj, $params );
 206                         $textProvided = !is_null( $text );
 207
 208                         if ( !$textProvided ) {
 209                                 if ( $titleProvided && ( $prop || $params['generatexml'] ) ) {
 210                                         $this->setWarning(
 211                                                 "'title' used without 'text', and parsed page properties were requested " .
 212                                                 "(did you mean to use 'page' instead of 'title'?)"
 213                                         );
 214                                 }
 215                                 // Prevent warning from ContentHandler::makeContent()
 216                                 $text = '';
 217                         }
 218
 219                         // If we are parsing text, do not use the content model of the default
 220                         // API title, but default to wikitext to keep BC.
 221                         if ( $textProvided && !$titleProvided && is_null( $model ) ) {
 222                                 $model = CONTENT_MODEL_WIKITEXT;
 223                                 $this->setWarning( "No 'title' or 'contentmodel' was given, assuming $model." );
 224                         }
 225
 226                         try {
 227                                 $this->content = ContentHandler::makeContent( $text, $titleObj, $model, $format );
 228                         } catch ( MWContentSerializationException $ex ) {
 229                                 $this->dieUsage( $ex->getMessage(), 'parseerror' );
 230                         }
 231
 232                         if ( $this->section !== false ) {
 233                                 if ( $this->section === 'new' ) {
 234                                         // Insert the section title above the content.
 235                                         if ( !is_null( $params['sectiontitle'] ) && $params['sectiontitle'] !== '' ) {
 236                                                 $this->content = $this->content->addSectionHeader( $params['sectiontitle'] );
 237                                         }
 238                                 } else {
 239                                         $this->content = $this->getSectionContent( $this->content, $titleObj->getPrefixedText() );
 240                                 }
 241                         }
 242
 243                         if ( $params['pst'] || $params['onlypst'] ) {
 244                                 $this->pstContent = $this->content->preSaveTransform( $titleObj, $this->getUser(), $popts );
 245                         }
 246                         if ( $params['onlypst'] ) {
 247                                 // Build a result and bail out
 248                                 $result_array = [];
 249                                 $result_array['text'] = $this->pstContent->serialize( $format );
 250                                 $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'text';
 251                                 if ( isset( $prop['wikitext'] ) ) {
 252                                         $result_array['wikitext'] = $this->content->serialize( $format );
 253                                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'wikitext';
 254                                 }
 255                                 if ( !is_null( $params['summary'] ) ||
 256                                         ( !is_null( $params['sectiontitle'] ) && $this->section === 'new' )
 257                                 ) {
 258                                         $result_array['parsedsummary'] = $this->formatSummary( $titleObj, $params );
 259                                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'parsedsummary';
 260                                 }
 261
 262                                 $result->addValue( null, $this->getModuleName(), $result_array );
 263
 264                                 return;
 265                         }
 266
 267                         // Not cached (save or load)
 268                         if ( $params['pst'] ) {
 269                                 $p_result = $this->pstContent->getParserOutput( $titleObj, null, $popts );
 270                         } else {
 271                                 $p_result = $this->content->getParserOutput( $titleObj, null, $popts );
 272                         }
 273                 }
 274
 275                 $result_array = [];
 276
 277                 $result_array['title'] = $titleObj->getPrefixedText();
 278                 $result_array['pageid'] = $pageid ?: $pageObj->getId();
 279
 280                 if ( !is_null( $oldid ) ) {
 281                         $result_array['revid'] = intval( $oldid );
 282                 }
 283
 284                 if ( $params['redirects'] && !is_null( $redirValues ) ) {
 285                         $result_array['redirects'] = $redirValues;
 286                 }
 287
 288                 if ( $params['disabletoc'] ) {
 289                         $p_result->setTOCEnabled( false );
 290                 }
 291
 292                 if ( isset( $prop['text'] ) ) {
 293                         $result_array['text'] = $p_result->getText();
 294                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'text';
 295                 }
 296
 297                 if ( !is_null( $params['summary'] ) ||
 298                         ( !is_null( $params['sectiontitle'] ) && $this->section === 'new' )
 299                 ) {
 300                         $result_array['parsedsummary'] = $this->formatSummary( $titleObj, $params );
 301                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'parsedsummary';
 302                 }
 303
 304                 if ( isset( $prop['langlinks'] ) ) {
 305                         $langlinks = $p_result->getLanguageLinks();
 306
 307                         if ( $params['effectivelanglinks'] ) {
 308                                 // Link flags are ignored for now, but may in the future be
 309                                 // included in the result.
 310                                 $linkFlags = [];
 311                                 Hooks::run( 'LanguageLinks', [ $titleObj, &$langlinks, &$linkFlags ] );
 312                         }
 313                 } else {
 314                         $langlinks = false;
 315                 }
 316
 317                 if ( isset( $prop['langlinks'] ) ) {
 318                         $result_array['langlinks'] = $this->formatLangLinks( $langlinks );
 319                 }
 320                 if ( isset( $prop['categories'] ) ) {
 321                         $result_array['categories'] = $this->formatCategoryLinks( $p_result->getCategories() );
 322                 }
 323                 if ( isset( $prop['categorieshtml'] ) ) {
 324                         $result_array['categorieshtml'] = $this->categoriesHtml( $p_result->getCategories() );
 325                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'categorieshtml';
 326                 }
 327                 if ( isset( $prop['links'] ) ) {
 328                         $result_array['links'] = $this->formatLinks( $p_result->getLinks() );
 329                 }
 330                 if ( isset( $prop['templates'] ) ) {
 331                         $result_array['templates'] = $this->formatLinks( $p_result->getTemplates() );
 332                 }
 333                 if ( isset( $prop['images'] ) ) {
 334                         $result_array['images'] = array_keys( $p_result->getImages() );
 335                 }
 336                 if ( isset( $prop['externallinks'] ) ) {
 337                         $result_array['externallinks'] = array_keys( $p_result->getExternalLinks() );
 338                 }
 339                 if ( isset( $prop['sections'] ) ) {
 340                         $result_array['sections'] = $p_result->getSections();
 341                 }
 342
 343                 if ( isset( $prop['displaytitle'] ) ) {
 344                         $result_array['displaytitle'] = $p_result->getDisplayTitle() ?:
 345                                 $titleObj->getPrefixedText();
 346                 }
 347
 348                 if ( isset( $prop['headitems'] ) || isset( $prop['headhtml'] ) ) {
 349                         $context = $this->getContext();
 350                         $context->setTitle( $titleObj );
 351                         $context->getOutput()->addParserOutputMetadata( $p_result );
 352
 353                         if ( isset( $prop['headitems'] ) ) {
 354                                 $headItems = $this->formatHeadItems( $p_result->getHeadItems() );
 355
 356                                 $css = $this->formatCss( $context->getOutput()->buildCssLinksArray() );
 357
 358                                 $scripts = [ $context->getOutput()->getHeadScripts() ];
 359
 360                                 $result_array['headitems'] = array_merge( $headItems, $css, $scripts );
 361                         }
 362
 363                         if ( isset( $prop['headhtml'] ) ) {
 364                                 $result_array['headhtml'] = $context->getOutput()->headElement( $context->getSkin() );
 365                                 $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'headhtml';
 366                         }
 367                 }
 368
 369                 if ( isset( $prop['modules'] ) ) {
 370                         $result_array['modules'] = array_values( array_unique( $p_result->getModules() ) );
 371                         $result_array['modulescripts'] = array_values( array_unique( $p_result->getModuleScripts() ) );
 372                         $result_array['modulestyles'] = array_values( array_unique( $p_result->getModuleStyles() ) );
 373                         // To be removed in 1.27
 374                         $result_array['modulemessages'] = [];
 375                         $this->setWarning( 'modulemessages is deprecated since MediaWiki 1.26' );
 376                 }
 377
 378                 if ( isset( $prop['jsconfigvars'] ) ) {
 379                         $result_array['jsconfigvars'] =
 380                                 ApiResult::addMetadataToResultVars( $p_result->getJsConfigVars() );
 381                 }
 382
 383                 if ( isset( $prop['encodedjsconfigvars'] ) ) {
 384                         $result_array['encodedjsconfigvars'] = FormatJson::encode(
 385                                 $p_result->getJsConfigVars(), false, FormatJson::ALL_OK
 386                         );
 387                         $result_array[ApiResult::META_SUBELEMENTS][] = 'encodedjsconfigvars';
 388                 }
 389
 390                 if ( isset( $prop['modules'] ) &&
 391                         !isset( $prop['jsconfigvars'] ) && !isset( $prop['encodedjsconfigvars'] ) ) {
 392                         $this->setWarning( 'Property "modules" was set but not "jsconfigvars" ' .
 393                                 'or "encodedjsconfigvars". Configuration variables are necessary ' .
 394                                 'for proper module usage.' );
 395                 }
 396
 397                 if ( isset( $prop['indicators'] ) ) {
 398                         $result_array['indicators'] = (array)$p_result->getIndicators();
 399                         ApiResult::setArrayType( $result_array['indicators'], 'BCkvp', 'name' );
 400                 }
 401
 402                 if ( isset( $prop['iwlinks'] ) ) {
 403                         $result_array['iwlinks'] = $this->formatIWLinks( $p_result->getInterwikiLinks() );
 404                 }
 405
 406                 if ( isset( $prop['wikitext'] ) ) {
 407                         $result_array['wikitext'] = $this->content->serialize( $format );
 408                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'wikitext';
 409                         if ( !is_null( $this->pstContent ) ) {
 410                                 $result_array['psttext'] = $this->pstContent->serialize( $format );
 411                                 $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'psttext';
 412                         }
 413                 }
 414                 if ( isset( $prop['properties'] ) ) {
 415                         $result_array['properties'] = (array)$p_result->getProperties();
 416                         ApiResult::setArrayType( $result_array['properties'], 'BCkvp', 'name' );
 417                 }
 418
 419                 if ( isset( $prop['limitreportdata'] ) ) {
 420                         $result_array['limitreportdata'] =
 421                                 $this->formatLimitReportData( $p_result->getLimitReportData() );
 422                 }
 423                 if ( isset( $prop['limitreporthtml'] ) ) {
 424                         $result_array['limitreporthtml'] = EditPage::getPreviewLimitReport( $p_result );
 425                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'limitreporthtml';
 426                 }
 427
 428                 if ( isset( $prop['parsetree'] ) || $params['generatexml'] ) {
 429                         if ( $this->content->getModel() != CONTENT_MODEL_WIKITEXT ) {
 430                                 $this->dieUsage( 'parsetree is only supported for wikitext content', 'notwikitext' );
 431                         }
 432
 433                         $wgParser->startExternalParse( $titleObj, $popts, Parser::OT_PREPROCESS );
 434                         $dom = $wgParser->preprocessToDom( $this->content->getNativeData() );
 435                         if ( is_callable( [ $dom, 'saveXML' ] ) ) {
 436                                 $xml = $dom->saveXML();
 437                         } else {
 438                                 $xml = $dom->__toString();
 439                         }
 440                         $result_array['parsetree'] = $xml;
 441                         $result_array[ApiResult::META_BC_SUBELEMENTS][] = 'parsetree';
 442                 }
 443
 444                 $result_mapping = [
 445                         'redirects' => 'r',
 446                         'langlinks' => 'll',
 447                         'categories' => 'cl',
 448                         'links' => 'pl',
 449                         'templates' => 'tl',
 450                         'images' => 'img',
 451                         'externallinks' => 'el',
 452                         'iwlinks' => 'iw',
 453                         'sections' => 's',
 454                         'headitems' => 'hi',
 455                         'modules' => 'm',
 456                         'indicators' => 'ind',
 457                         'modulescripts' => 'm',
 458                         'modulestyles' => 'm',
 459                         'modulemessages' => 'm',
 460                         'properties' => 'pp',
 461                         'limitreportdata' => 'lr',
 462                 ];
 463                 $this->setIndexedTagNames( $result_array, $result_mapping );
 464                 $result->addValue( null, $this->getModuleName(), $result_array );
 465         }
 466
 467         /**
 468          * Constructs a ParserOptions object
 469          *
 470          * @param WikiPage $pageObj
 471          * @param array $params
 472          *
 473          * @return array [ ParserOptions, ScopedCallback, bool $suppressCache ]
 474          */
 475         protected function makeParserOptions( WikiPage $pageObj, array $params ) {
 476                 $popts = $pageObj->makeParserOptions( $this->getContext() );
 477                 $popts->enableLimitReport( !$params['disablepp'] && !$params['disablelimitreport'] );
 478                 $popts->setIsPreview( $params['preview'] || $params['sectionpreview'] );
 479                 $popts->setIsSectionPreview( $params['sectionpreview'] );
 480                 $popts->setEditSection( !$params['disableeditsection'] );
 481                 if ( $params['disabletidy'] ) {
 482                         $popts->setTidy( false );
 483                 }
 484
 485                 $reset = null;
 486                 $suppressCache = false;
 487                 Hooks::run( 'ApiMakeParserOptions',
 488                         [ $popts, $pageObj->getTitle(), $params, $this, &$reset, &$suppressCache ] );
 489
 490                 return [ $popts, $reset, $suppressCache ];
 491         }
 492
 493         /**
 494          * @param WikiPage $page
 495          * @param ParserOptions $popts
 496          * @param int $pageId
 497          * @param bool $getWikitext
 498          * @return ParserOutput
 499          */
 500         private function getParsedContent( WikiPage $page, $popts, $pageId = null, $getWikitext = false ) {
 501                 $this->content = $this->getContent( $page, $pageId );
 502
 503                 if ( $this->section !== false && $this->content !== null ) {
 504                         // Not cached (save or load)
 505                         return $this->content->getParserOutput( $page->getTitle(), null, $popts );
 506                 }
 507
 508                 // Try the parser cache first
 509                 // getParserOutput will save to Parser cache if able
 510                 $pout = $page->getParserOutput( $popts );
 511                 if ( !$pout ) {
 512                         $this->dieUsage( "There is no revision ID {$page->getLatest()}", 'missingrev' );
 513                 }
 514                 if ( $getWikitext ) {
 515                         $this->content = $page->getContent( Revision::RAW );
 516                 }
 517
 518                 return $pout;
 519         }
 520
 521         /**
 522          * Get the content for the given page and the requested section.
 523          *
 524          * @param WikiPage $page
 525          * @param int $pageId
 526          * @return Content
 527          */
 528         private function getContent( WikiPage $page, $pageId = null ) {
 529                 $content = $page->getContent( Revision::RAW ); // XXX: really raw?
 530
 531                 if ( $this->section !== false && $content !== null ) {
 532                         $content = $this->getSectionContent(
 533                                 $content,
 534                                 !is_null( $pageId ) ? 'page id ' . $pageId : $page->getTitle()->getPrefixedText()
 535                         );
 536                 }
 537                 return $content;
 538         }
 539
 540         /**
 541          * Extract the requested section from the given Content
 542          *
 543          * @param Content $content
 544          * @param string $what Identifies the content in error messages, e.g. page title.
 545          * @return Content|bool
 546          */
 547         private function getSectionContent( Content $content, $what ) {
 548                 // Not cached (save or load)
 549                 $section = $content->getSection( $this->section );
 550                 if ( $section === false ) {
 551                         $this->dieUsage( "There is no section {$this->section} in $what", 'nosuchsection' );
 552                 }
 553                 if ( $section === null ) {
 554                         $this->dieUsage( "Sections are not supported by $what", 'nosuchsection' );
 555                         $section = false;
 556                 }
 557
 558                 return $section;
 559         }
 560
 561         /**
 562          * This mimicks the behavior of EditPage in formatting a summary
 563          *
 564          * @param Title $title of the page being parsed
 565          * @param Array $params the API parameters of the request
 566          * @return Content|bool
 567          */
 568         private function formatSummary( $title, $params ) {
 569                 global $wgParser;
 570                 $summary = !is_null( $params['summary'] ) ? $params['summary'] : '';
 571                 $sectionTitle = !is_null( $params['sectiontitle'] ) ? $params['sectiontitle'] : '';
 572
 573                 if ( $this->section === 'new' && ( $sectionTitle === '' || $summary === '' ) ) {
 574                         if ( $sectionTitle !== '' ) {
 575                                 $summary = $params['sectiontitle'];
 576                         }
 577                         if ( $summary !== '' ) {
 578                                 $summary = wfMessage( 'newsectionsummary' )
 579                                         ->rawParams( $wgParser->stripSectionName( $summary ) )
 580                                                 ->inContentLanguage()->text();
 581                         }
 582                 }
 583                 return Linker::formatComment( $summary, $title, $this->section === 'new' );
 584         }
 585
 586         private function formatLangLinks( $links ) {
 587                 $result = [];
 588                 foreach ( $links as $link ) {
 589                         $entry = [];
 590                         $bits = explode( ':', $link, 2 );
 591                         $title = Title::newFromText( $link );
 592
 593                         $entry['lang'] = $bits[0];
 594                         if ( $title ) {
 595                                 $entry['url'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );
 596                                 // localised language name in 'uselang' language
 597                                 $entry['langname'] = Language::fetchLanguageName(
 598                                         $title->getInterwiki(),
 599                                         $this->getLanguage()->getCode()
 600                                 );
 601
 602                                 // native language name
 603                                 $entry['autonym'] = Language::fetchLanguageName( $title->getInterwiki() );
 604                         }
 605                         ApiResult::setContentValue( $entry, 'title', $bits[1] );
 606                         $result[] = $entry;
 607                 }
 608
 609                 return $result;
 610         }
 611
 612         private function formatCategoryLinks( $links ) {
 613                 $result = [];
 614
 615                 if ( !$links ) {
 616                         return $result;
 617                 }
 618
 619                 // Fetch hiddencat property
 620                 $lb = new LinkBatch;
 621                 $lb->setArray( [ NS_CATEGORY => $links ] );
 622                 $db = $this->getDB();
 623                 $res = $db->select( [ 'page', 'page_props' ],
 624                         [ 'page_title', 'pp_propname' ],
 625                         $lb->constructSet( 'page', $db ),
 626                         __METHOD__,
 627                         [],
 628                         [ 'page_props' => [
 629                                 'LEFT JOIN', [ 'pp_propname' => 'hiddencat', 'pp_page = page_id' ]
 630                         ] ]
 631                 );
 632                 $hiddencats = [];
 633                 foreach ( $res as $row ) {
 634                         $hiddencats[$row->page_title] = isset( $row->pp_propname );
 635                 }
 636
 637                 foreach ( $links as $link => $sortkey ) {
 638                         $entry = [];
 639                         $entry['sortkey'] = $sortkey;
 640                         // array keys will cast numeric category names to ints, so cast back to string
 641                         ApiResult::setContentValue( $entry, 'category', (string)$link );
 642                         if ( !isset( $hiddencats[$link] ) ) {
 643                                 $entry['missing'] = true;
 644                         } elseif ( $hiddencats[$link] ) {
 645                                 $entry['hidden'] = true;
 646                         }
 647                         $result[] = $entry;
 648                 }
 649
 650                 return $result;
 651         }
 652
 653         private function categoriesHtml( $categories ) {
 654                 $context = $this->getContext();
 655                 $context->getOutput()->addCategoryLinks( $categories );
 656
 657                 return $context->getSkin()->getCategories();
 658         }
 659
 660         private function formatLinks( $links ) {
 661                 $result = [];
 662                 foreach ( $links as $ns => $nslinks ) {
 663                         foreach ( $nslinks as $title => $id ) {
 664                                 $entry = [];
 665                                 $entry['ns'] = $ns;
 666                                 ApiResult::setContentValue( $entry, 'title', Title::makeTitle( $ns, $title )->getFullText() );
 667                                 $entry['exists'] = $id != 0;
 668                                 $result[] = $entry;
 669                         }
 670                 }
 671
 672                 return $result;
 673         }
 674
 675         private function formatIWLinks( $iw ) {
 676                 $result = [];
 677                 foreach ( $iw as $prefix => $titles ) {
 678                         foreach ( array_keys( $titles ) as $title ) {
 679                                 $entry = [];
 680                                 $entry['prefix'] = $prefix;
 681
 682                                 $title = Title::newFromText( "{$prefix}:{$title}" );
 683                                 if ( $title ) {
 684                                         $entry['url'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );
 685                                 }
 686
 687                                 ApiResult::setContentValue( $entry, 'title', $title->getFullText() );
 688                                 $result[] = $entry;
 689                         }
 690                 }
 691
 692                 return $result;
 693         }
 694
 695         private function formatHeadItems( $headItems ) {
 696                 $result = [];
 697                 foreach ( $headItems as $tag => $content ) {
 698                         $entry = [];
 699                         $entry['tag'] = $tag;
 700                         ApiResult::setContentValue( $entry, 'content', $content );
 701                         $result[] = $entry;
 702                 }
 703
 704                 return $result;
 705         }
 706
 707         private function formatCss( $css ) {
 708                 $result = [];
 709                 foreach ( $css as $file => $link ) {
 710                         $entry = [];
 711                         $entry['file'] = $file;
 712                         ApiResult::setContentValue( $entry, 'link', $link );
 713                         $result[] = $entry;
 714                 }
 715
 716                 return $result;
 717         }
 718
 719         private function formatLimitReportData( $limitReportData ) {
 720                 $result = [];
 721
 722                 foreach ( $limitReportData as $name => $value ) {
 723                         $entry = [];
 724                         $entry['name'] = $name;
 725                         if ( !is_array( $value ) ) {
 726                                 $value = [ $value ];
 727                         }
 728                         ApiResult::setIndexedTagNameRecursive( $value, 'param' );
 729                         $entry = array_merge( $entry, $value );
 730                         $result[] = $entry;
 731                 }
 732
 733                 return $result;
 734         }
 735
 736         private function setIndexedTagNames( &$array, $mapping ) {
 737                 foreach ( $mapping as $key => $name ) {
 738                         if ( isset( $array[$key] ) ) {
 739                                 ApiResult::setIndexedTagName( $array[$key], $name );
 740                         }
 741                 }
 742         }
 743
 744         public function getAllowedParams() {
 745                 return [
 746                         'title' => null,
 747                         'text' => [
 748                                 ApiBase::PARAM_TYPE => 'text',
 749                         ],
 750                         'summary' => null,
 751                         'page' => null,
 752                         'pageid' => [
 753                                 ApiBase::PARAM_TYPE => 'integer',
 754                         ],
 755                         'redirects' => false,
 756                         'oldid' => [
 757                                 ApiBase::PARAM_TYPE => 'integer',
 758                         ],
 759                         'prop' => [
 760                                 ApiBase::PARAM_DFLT => 'text|langlinks|categories|links|templates|' .
 761                                         'images|externallinks|sections|revid|displaytitle|iwlinks|properties',
 762                                 ApiBase::PARAM_ISMULTI => true,
 763                                 ApiBase::PARAM_TYPE => [
 764                                         'text',
 765                                         'langlinks',
 766                                         'categories',
 767                                         'categorieshtml',
 768                                         'links',
 769                                         'templates',
 770                                         'images',
 771                                         'externallinks',
 772                                         'sections',
 773                                         'revid',
 774                                         'displaytitle',
 775                                         'headitems',
 776                                         'headhtml',
 777                                         'modules',
 778                                         'jsconfigvars',
 779                                         'encodedjsconfigvars',
 780                                         'indicators',
 781                                         'iwlinks',
 782                                         'wikitext',
 783                                         'properties',
 784                                         'limitreportdata',
 785                                         'limitreporthtml',
 786                                         'parsetree',
 787                                 ],
 788                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [
 789                                         'parsetree' => [ 'apihelp-parse-paramvalue-prop-parsetree', CONTENT_MODEL_WIKITEXT ],
 790                                 ],
 791                         ],
 792                         'pst' => false,
 793                         'onlypst' => false,
 794                         'effectivelanglinks' => false,
 795                         'section' => null,
 796                         'sectiontitle' => [
 797                                 ApiBase::PARAM_TYPE => 'string',
 798                         ],
 799                         'disablepp' => [
 800                                 ApiBase::PARAM_DFLT => false,
 801                                 ApiBase::PARAM_DEPRECATED => true,
 802                         ],
 803                         'disablelimitreport' => false,
 804                         'disableeditsection' => false,
 805                         'disabletidy' => false,
 806                         'generatexml' => [
 807                                 ApiBase::PARAM_DFLT => false,
 808                                 ApiBase::PARAM_HELP_MSG => [
 809                                         'apihelp-parse-param-generatexml', CONTENT_MODEL_WIKITEXT
 810                                 ],
 811                                 ApiBase::PARAM_DEPRECATED => true,
 812                         ],
 813                         'preview' => false,
 814                         'sectionpreview' => false,
 815                         'disabletoc' => false,
 816                         'contentformat' => [
 817                                 ApiBase::PARAM_TYPE => ContentHandler::getAllContentFormats(),
 818                         ],
 819                         'contentmodel' => [
 820                                 ApiBase::PARAM_TYPE => ContentHandler::getContentModels(),
 821                         ]
 822                 ];
 823         }
 824
 825         protected function getExamplesMessages() {
 826                 return [
 827                         'action=parse&page=Project:Sandbox'
 828                                 => 'apihelp-parse-example-page',
 829                         'action=parse&text={{Project:Sandbox}}&contentmodel=wikitext'
 830                                 => 'apihelp-parse-example-text',
 831                         'action=parse&text={{PAGENAME}}&title=Test'
 832                                 => 'apihelp-parse-example-texttitle',
 833                         'action=parse&summary=Some+[[link]]&prop='
 834                                 => 'apihelp-parse-example-summary',
 835                 ];
 836         }
 837
 838         public function getHelpUrls() {
 839                 return 'https://www.mediawiki.org/wiki/API:Parsing_wikitext#parse';
 840         }
 841 }