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   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * @package moodlecore
  20   * @subpackage xml
  21   * @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once($CFG->dirroot.'/backup/util/xml/parser/processors/progressive_parser_processor.class.php');
  26  
  27  /**
  28   * Selective progressive_parser_processor that will send chunks straight
  29   * to output but only for chunks matching (in a left padded way - like) some defined paths
  30   */
  31  class selective_like_parser_processor extends progressive_parser_processor {
  32  
  33     protected $paths; // array of paths we are interested on
  34  
  35     public function __construct(array $paths) {
  36         parent::__construct();
  37         $this->paths = '=>' . implode('=>', $paths);
  38     }
  39  
  40     public function process_chunk($data) {
  41         if ($this->path_is_selected($data['path'])) {
  42             print_r($data); // Simply output chunk, for testing purposes
  43         } else {
  44             $this->chunks--; // Chunk skipped
  45         }
  46     }
  47  
  48  // Protected API starts here
  49  
  50     protected function path_is_selected($path) {
  51         return strpos('@=>' . $path, $this->paths);
  52     }
  53  }