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   1  <?php
   2  /**
   3   * @file
   4   * @author Niklas Laxström
   5   * @license GPL-2.0+
   6   */
   7  
   8  /**
   9   * Reads MediaWiki PHP i18n files.
  10   */
  11  class LU_PHPReader implements LU_Reader {
  12      /// @var string Language tag
  13      protected $code;
  14  
  15  	public function __construct( $code = null ) {
  16          $this->code = $code;
  17      }
  18  
  19  	public function parse( $contents ) {
  20          if ( strpos( $contents, '$messages' ) === false ) {
  21              // This happens for some core languages that only have a fallback.
  22              return array();
  23          }
  24  
  25          $php = $this->cleanupFile( $contents );
  26          $reader = new QuickArrayReader( "<?php $php" );
  27          $messages = $reader->getVar( 'messages' );
  28  
  29          if ( $this->code ) {
  30              return array( $this->code => $messages );
  31          }
  32  
  33          // Assuming that the array is keyed by language codes
  34          return $messages;
  35      }
  36  
  37      /**
  38       * Removes all unneeded content from a file and returns it.
  39       *
  40       * @param string $contents String
  41       * @return string PHP code without PHP tags
  42       */
  43  	protected function cleanupFile( $contents ) {
  44          // We hate the windows vs linux linebreaks.
  45          $contents = preg_replace( '/\r\n?/', "\n", $contents );
  46  
  47          // We only want message arrays.
  48          $results = array();
  49          preg_match_all( '/\$messages(?:.*\s)*?\);/', $contents, $results );
  50  
  51          // But we want them all in one string.
  52          return implode( "\n\n", $results[0] );
  53      }
  54  }