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Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Custom Moodle engine for mustache.
  19   *
  20   * @copyright  2019 Ryan Wyllie <ryan@moodle.com>
  21   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22   */
  23  
  24  namespace core\output;
  25  
  26  /**
  27   * Custom Moodle engine for mustache.
  28   *
  29   * @copyright  2019 Ryan Wyllie <ryan@moodle.com>
  30   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  31   */
  32  class mustache_engine extends \Mustache_Engine {
  33      /**
  34       * @var mustache_helper_collection
  35       */
  36      private $helpers;
  37  
  38      /**
  39       * @var string[] Names of helpers that aren't allowed to be called within other helpers.
  40       */
  41      private $blacklistednestedhelpers = [];
  42  
  43      /**
  44       * Mustache engine constructor.
  45       *
  46       * This provides an additional option to the parent \Mustache_Engine implementation:
  47       * $options = [
  48       *      // A list of helpers (by name) to prevent from executing within the rendering
  49       *      // of other helpers.
  50       *      'blacklistednestedhelpers' => ['js']
  51       * ];
  52       * @param array $options [description]
  53       */
  54      public function __construct(array $options = []) {
  55          if (isset($options['blacklistednestedhelpers'])) {
  56              $this->blacklistednestedhelpers = $options['blacklistednestedhelpers'];
  57          }
  58  
  59          parent::__construct($options);
  60      }
  61  
  62      /**
  63       * Get the current set of Mustache helpers.
  64       *
  65       * @see Mustache_Engine::setHelpers
  66       *
  67       * @return \Mustache_HelperCollection
  68       */
  69      public function getHelpers()
  70      {
  71          if (!isset($this->helpers)) {
  72              $this->helpers = new mustache_helper_collection(null, $this->blacklistednestedhelpers);
  73          }
  74  
  75          return $this->helpers;
  76      }
  77  }