Shortcode for Presestashop's CMS page.

td_shortcode.php

<?php

if (!defined('_PS_VERSION_')) exit;

class TD_Shortcode extends Module {
  protected static $initialized = false;

  public function __construct() {
    $this->name = 'td_shortcode';
    $this->tab = 'front_office_feature';
    $this->version = 1.0;
    $this->author = 'Tung Dao';
    $this->need_instance = 0;

    parent::__construct();

    $this->displayName = $this->l('Shortcode plugin for Prestashop CMS Content.');
    $this->description = $this->l('Supported: [b], [slide] and [module].');

    // The module could be initialized multiple times, this guard make sure
    // the plugins only be registered with Smarty once.
    if (!self::$initialized) {
      global $smarty;

      self::$initialized = true;

      $smarty->registerPlugin('modifier',
        'b', array($this, 'smarty_modifier_b'));

      $smarty->registerPlugin('modifier',
        'module', array($this, 'smarty_modifier_module'));
    }
  }

  public function install() {
    if (parent::install() == false ||
      $this->registerHook('displayHeader') == false) {
      return false;
    }

    return true;
  }

  public function hookDisplayHeader() {}

  
  /**
   * [b] shortcode
   *
   * Usage: [b]Some text[/b]
   */
  public function smarty_modifier_b($content) {
    return preg_replace_callback('/\[b\](.*?)\[\/b\]/ism',
      array($this, 'render_b'), $content);
  }

  protected function render_b($text) {
    return sprintf('<b>%s</b>', $text[1]);
  }
  

  /**
   * [module] shortcode.
   * Inspired by http://www.ecartservice.net/prestashop-articles/tired-of-hooks-try-a-plugin-prestashop-1-4/
   * 
   * Usage: [module name="" hook="" ...]
   */
  public function smarty_modifier_module($content) {
    return preg_replace_callback('/\[module(.*?)\](.*?)\[\/module\]/ism',
      array($this, 'render_module'), $content);
  }

  protected function render_module($text) {
    global $cart, $cookie;

    $params = $this->parse_shortcode_atts($text[2]);
    if (!isset($params['cookie']) OR !$params['cookie'])
      $params['cookie'] = $cookie;
    if (!isset($params['cart']) OR !$params['cart'])
      $params['cart'] = $cart;
    $params['altern'] = 1;

    $output = '';
    $instance = Module::getInstanceByName($params['name']);
    if (is_callable(array($instance, 'hook'.$params['hook'])))
      $output = call_user_func(array($instance,'hook'.$params['hook']), $params);

    return $output;
  }

  protected function parse_shortcode_atts($text) {
    // Copied from Wordpress
    // https://core.trac.wordpress.org/browser/tags/3.9.1/src/wp-includes/shortcodes.php#L306
    $atts = array();
    $pattern = '/(\w+)\s*=\s*"([^"]*)"(?:\s|$)|(\w+)\s*=\s*\'([^\']*)\'(?:\s|$)|(\w+)\s*=\s*([^\s\'"]+)(?:\s|$)|"([^"]*)"(?:\s|$)|(\S+)(?:\s|$)/';
    $text = preg_replace("/[\x{00a0}\x{200b}]+/u", " ", $text);
    if ( preg_match_all($pattern, $text, $match, PREG_SET_ORDER) ) {
      foreach ($match as $m) {
        if (!empty($m[1]))
          $atts[strtolower($m[1])] = stripcslashes($m[2]);
        elseif (!empty($m[3]))
          $atts[strtolower($m[3])] = stripcslashes($m[4]);
        elseif (!empty($m[5]))
          $atts[strtolower($m[5])] = stripcslashes($m[6]);
        elseif (isset($m[7]) and strlen($m[7]))
          $atts[] = stripcslashes($m[7]);
        elseif (isset($m[8]))
          $atts[] = stripcslashes($m[8]);
      }
    } else {
      $atts = ltrim($text);
    }
    return $atts;
  }
}

See http://stackoverflow.com/a/24532873/709769 for more information to this gist.