Extension.php

<?php
namespace LinkTitles;

class Extension {
  const URL = 'https://github.com/bovender/LinkTitles';

  public static function onPageContentSave( &$wikiPage, &$user, &$content, &$summary,
      $isMinor, $isWatch, $section, &$flags, &$status ) {
    $config = new Config();
    if ( !$config->parseOnEdit || $isMinor ) return true;
    $source = Source::createFromPageandContent( $wikiPage, $content, $config );
    $linker = new Linker( $config );
    $result = $linker->linkContent( $source );
    if ( $result ) {
      $content = $source->setText( $result );
    }
    return true;
  }

  /*
   * Event handler for the InternalParseBeforeLinks hook.
   *
   * This handler is used if the parseOnRender configuration option is set.
   */
  public static function onInternalParseBeforeLinks( \Parser &$parser, &$text ) {
    $config = new Config();
    if ( !$config->parseOnRender ) return true;
    $title = $parser->getTitle();
    $source = Source::createFromParserAndText( $parser, $text, $config );
    $linker = new Linker( $config );
    $result = $linker->linkContent( $source );
    if ( $result ) {
      $text = $result;
    }
    return true;
  }

  public static function processPage( \Title $title, \RequestContext $context ) {
    $config = new Config();
    $source = Source::createFromTitle( $title, $config );
    if ( $source->hasContent() ) {
      $linker = new Linker( $config );
      $result = $linker->linkContent( $source );
      if ( $result ) {
        $content = $source->getContent()->getContentHandler()->unserializeContent( $result );
        $source->getPage()->doEditContent(
          $content,
          \wfMessage( 'linktitles-bot-comment', self::URL ),
          EDIT_MINOR | EDIT_FORCE_BOT,
          false, // baseRevId
          $context->getUser()
        );
      };
      return true;
    }
    else {
      return false;
    }
  }

  /*
   * Adds the two magic words defined by this extension to the list of
   * 'double-underscore' terms that are automatically removed before a
   * page is displayed.
   *
   * @param  Array $doubleUnderscoreIDs Array of magic word IDs.
   * @return true
   */
  public static function onGetDoubleUnderscoreIDs( array &$doubleUnderscoreIDs ) {
    $doubleUnderscoreIDs[] = 'MAG_LINKTITLES_NOTARGET';
    $doubleUnderscoreIDs[] = 'MAG_LINKTITLES_NOAUTOLINKS';
    return true;
  }

  public static function onParserFirstCallInit( \Parser $parser ) {
    $parser->setHook( 'noautolinks', 'LinkTitles\Extension::doNoautolinksTag' );
    $parser->setHook( 'autolinks', 'LinkTitles\Extension::doAutolinksTag' );
  }

  /*
   *  Removes the extra tag that this extension provides (<noautolinks>)
   *  by simply returning the text between the tags (if any).
   *  See https://www.mediawiki.org/wiki/Manual:Tag_extensions#Example
   */
  public static function doNoautolinksTag( $input, array $args, \Parser $parser, \PPFrame $frame ) {
    Linker::lock();
    $result =  $parser->recursiveTagParse( $input, $frame );
    Linker::unlock();
    return $result;
  }

  /*
   *  Removes the extra tag that this extension provides (<noautolinks>)
   *  by simply returning the text between the tags (if any).
   *  See https://www.mediawiki.org/wiki/Manual:Tag_extensions#How_do_I_render_wikitext_in_my_extension.3F
   */
  public static function doAutolinksTag( $input, array $args, \Parser $parser, \PPFrame $frame ) {
    $config = new Config();
    $linker = new Linker( $config );
    $source = Source::createFromParserAndText( $parser, $input, $config );
    Linker::unlock();
    $result = $linker->linkContent( $source );
    Linker::lock();
    if ( $result ) {
      return $parser->recursiveTagParse( $result, $frame );
    } else {
      return $parser->recursiveTagParse( $input, $frame );
    }
  }
}

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