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   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   * Mustache helper that will convert a timestamp to a date string.
  19   *
  20   * @package    core
  21   * @category   output
  22   * @copyright  2017 Ryan Wyllie <ryan@moodle.com>
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  namespace core\output;
  27  
  28  defined('MOODLE_INTERNAL') || die();
  29  
  30  use Mustache_LambdaHelper;
  31  
  32  /**
  33   * Mustache helper that will convert a timestamp to a date string.
  34   *
  35   * @copyright  2017 Ryan Wyllie <ryan@moodle.com>
  36   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37   */
  38  class mustache_user_date_helper {
  39  
  40      /**
  41       * Read a timestamp and format from the string.
  42       *
  43       * {{#userdate}}1487655635, %Y %m %d{{/userdate}}
  44       *
  45       * There is a list of formats in lang/en/langconfig.php that can be used as the date format.
  46       *
  47       * Both args are required. The timestamp must come first.
  48       *
  49       * @param string $args The text to parse for arguments.
  50       * @param Mustache_LambdaHelper $helper Used to render nested mustache variables.
  51       * @return string
  52       */
  53      public function transform($args, Mustache_LambdaHelper $helper) {
  54          // Split the text into an array of variables.
  55          list($timestamp, $format) = explode(',', $args, 2);
  56          $timestamp = trim($timestamp);
  57          $format = trim($format);
  58  
  59          $timestamp = $helper->render($timestamp);
  60          $format = $helper->render($format);
  61  
  62          return userdate($timestamp, $format);
  63      }
  64  }