Smarty.class.php in Quiz 6.6

Same filename and directory in other branches
6.5 includes/moodle/lib/smarty/Smarty.class.php
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includes/moodle/lib/smarty/Smarty.class.php
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<?php

/**
 * Project:     Smarty: the PHP compiling template engine
 * File:        Smarty.class.php
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * For questions, help, comments, discussion, etc., please join the
 * Smarty mailing list. Send a blank e-mail to
 * smarty-general-subscribe@lists.php.net
 *
 * @link http://smarty.php.net/
 * @copyright 2001-2005 New Digital Group, Inc.
 * @author Monte Ohrt <monte at ohrt dot com>
 * @author Andrei Zmievski <andrei@php.net>
 * @package Smarty
 * @version 2.6.9
 */

/**
 * DIR_SEP isn't used anymore, but third party apps might
 */
if (!defined('DIR_SEP')) {
  define('DIR_SEP', DIRECTORY_SEPARATOR);
}

/**
 * set SMARTY_DIR to absolute path to Smarty library files.
 * if not defined, include_path will be used. Sets SMARTY_DIR only if user
 * application has not already defined it.
 */
if (!defined('SMARTY_DIR')) {
  define('SMARTY_DIR', dirname(__FILE__) . DIRECTORY_SEPARATOR);
}
if (!defined('SMARTY_CORE_DIR')) {
  define('SMARTY_CORE_DIR', SMARTY_DIR . 'core' . DIRECTORY_SEPARATOR);
}
define('SMARTY_PHP_PASSTHRU', 0);
define('SMARTY_PHP_QUOTE', 1);
define('SMARTY_PHP_REMOVE', 2);
define('SMARTY_PHP_ALLOW', 3);

/**
 * @package Smarty
 */
class Smarty {

  /**#@+
   * Smarty Configuration Section
   */

  /**
   * The name of the directory where templates are located.
   *
   * @var string
   */
  var $template_dir = 'templates';

  /**
   * The directory where compiled templates are located.
   *
   * @var string
   */
  var $compile_dir = 'templates_c';

  /**
   * The directory where config files are located.
   *
   * @var string
   */
  var $config_dir = 'configs';

  /**
   * An array of directories searched for plugins.
   *
   * @var array
   */
  var $plugins_dir = array(
    'plugins',
  );

  /**
   * If debugging is enabled, a debug console window will display
   * when the page loads (make sure your browser allows unrequested
   * popup windows)
   *
   * @var boolean
   */
  var $debugging = false;

  /**
   * When set, smarty does uses this value as error_reporting-level.
   *
   * @var boolean
   */
  var $error_reporting = null;

  /**
   * This is the path to the debug console template. If not set,
   * the default one will be used.
   *
   * @var string
   */
  var $debug_tpl = '';

  /**
   * This determines if debugging is enable-able from the browser.
   * <ul>
   *  <li>NONE => no debugging control allowed</li>
   *  <li>URL => enable debugging when SMARTY_DEBUG is found in the URL.</li>
   * </ul>
   * @link http://www.foo.dom/index.php?SMARTY_DEBUG
   * @var string
   */
  var $debugging_ctrl = 'NONE';

  /**
   * This tells Smarty whether to check for recompiling or not. Recompiling
   * does not need to happen unless a template or config file is changed.
   * Typically you enable this during development, and disable for
   * production.
   *
   * @var boolean
   */
  var $compile_check = true;

  /**
   * This forces templates to compile every time. Useful for development
   * or debugging.
   *
   * @var boolean
   */
  var $force_compile = false;

  /**
   * This enables template caching.
   * <ul>
   *  <li>0 = no caching</li>
   *  <li>1 = use class cache_lifetime value</li>
   *  <li>2 = use cache_lifetime in cache file</li>
   * </ul>
   * @var integer
   */
  var $caching = 0;

  /**
   * The name of the directory for cache files.
   *
   * @var string
   */
  var $cache_dir = 'cache';

  /**
   * This is the number of seconds cached content will persist.
   * <ul>
   *  <li>0 = always regenerate cache</li>
   *  <li>-1 = never expires</li>
   * </ul>
   *
   * @var integer
   */
  var $cache_lifetime = 3600;

  /**
   * Only used when $caching is enabled. If true, then If-Modified-Since headers
   * are respected with cached content, and appropriate HTTP headers are sent.
   * This way repeated hits to a cached page do not send the entire page to the
   * client every time.
   *
   * @var boolean
   */
  var $cache_modified_check = false;

  /**
   * This determines how Smarty handles "<?php ... ?>" tags in templates.
   * possible values:
   * <ul>
   *  <li>SMARTY_PHP_PASSTHRU -> print tags as plain text</li>
   *  <li>SMARTY_PHP_QUOTE    -> escape tags as entities</li>
   *  <li>SMARTY_PHP_REMOVE   -> remove php tags</li>
   *  <li>SMARTY_PHP_ALLOW    -> execute php tags</li>
   * </ul>
   *
   * @var integer
   */
  var $php_handling = SMARTY_PHP_PASSTHRU;

  /**
   * This enables template security. When enabled, many things are restricted
   * in the templates that normally would go unchecked. This is useful when
   * untrusted parties are editing templates and you want a reasonable level
   * of security. (no direct execution of PHP in templates for example)
   *
   * @var boolean
   */
  var $security = false;

  /**
   * This is the list of template directories that are considered secure. This
   * is used only if {@link $security} is enabled. One directory per array
   * element.  {@link $template_dir} is in this list implicitly.
   *
   * @var array
   */
  var $secure_dir = array();

  /**
   * These are the security settings for Smarty. They are used only when
   * {@link $security} is enabled.
   *
   * @var array
   */
  var $security_settings = array(
    'PHP_HANDLING' => false,
    'IF_FUNCS' => array(
      'array',
      'list',
      'isset',
      'empty',
      'count',
      'sizeof',
      'in_array',
      'is_array',
      'true',
      'false',
      'null',
    ),
    'INCLUDE_ANY' => false,
    'PHP_TAGS' => false,
    'MODIFIER_FUNCS' => array(
      'count',
    ),
    'ALLOW_CONSTANTS' => false,
  );

  /**
   * This is an array of directories where trusted php scripts reside.
   * {@link $security} is disabled during their inclusion/execution.
   *
   * @var array
   */
  var $trusted_dir = array();

  /**
   * The left delimiter used for the template tags.
   *
   * @var string
   */
  var $left_delimiter = '{';

  /**
   * The right delimiter used for the template tags.
   *
   * @var string
   */
  var $right_delimiter = '}';

  /**
   * The order in which request variables are registered, similar to
   * variables_order in php.ini E = Environment, G = GET, P = POST,
   * C = Cookies, S = Server
   *
   * @var string
   */
  var $request_vars_order = 'EGPCS';

  /**
   * Indicates wether $HTTP_*_VARS[] (request_use_auto_globals=false)
   * are uses as request-vars or $_*[]-vars. note: if
   * request_use_auto_globals is true, then $request_vars_order has
   * no effect, but the php-ini-value "gpc_order"
   *
   * @var boolean
   */
  var $request_use_auto_globals = true;

  /**
   * Set this if you want different sets of compiled files for the same
   * templates. This is useful for things like different languages.
   * Instead of creating separate sets of templates per language, you
   * set different compile_ids like 'en' and 'de'.
   *
   * @var string
   */
  var $compile_id = null;

  /**
   * This tells Smarty whether or not to use sub dirs in the cache/ and
   * templates_c/ directories. sub directories better organized, but
   * may not work well with PHP safe mode enabled.
   *
   * @var boolean
   *
   */
  var $use_sub_dirs = false;

  /**
   * This is a list of the modifiers to apply to all template variables.
   * Put each modifier in a separate array element in the order you want
   * them applied. example: <code>array('escape:"htmlall"');</code>
   *
   * @var array
   */
  var $default_modifiers = array();

  /**
   * This is the resource type to be used when not specified
   * at the beginning of the resource path. examples:
   * $smarty->display('file:index.tpl');
   * $smarty->display('db:index.tpl');
   * $smarty->display('index.tpl'); // will use default resource type
   * {include file="file:index.tpl"}
   * {include file="db:index.tpl"}
   * {include file="index.tpl"} {* will use default resource type *}
   *
   * @var array
   */
  var $default_resource_type = 'file';

  /**
   * The function used for cache file handling. If not set, built-in caching is used.
   *
   * @var null|string function name
   */
  var $cache_handler_func = null;

  /**
   * This indicates which filters are automatically loaded into Smarty.
   *
   * @var array array of filter names
   */
  var $autoload_filters = array();

  /**#@+
   * @var boolean
   */

  /**
   * This tells if config file vars of the same name overwrite each other or not.
   * if disabled, same name variables are accumulated in an array.
   */
  var $config_overwrite = true;

  /**
   * This tells whether or not to automatically booleanize config file variables.
   * If enabled, then the strings "on", "true", and "yes" are treated as boolean
   * true, and "off", "false" and "no" are treated as boolean false.
   */
  var $config_booleanize = true;

  /**
   * This tells whether hidden sections [.foobar] are readable from the
   * tempalates or not. Normally you would never allow this since that is
   * the point behind hidden sections: the application can access them, but
   * the templates cannot.
   */
  var $config_read_hidden = false;

  /**
   * This tells whether or not automatically fix newlines in config files.
   * It basically converts \r (mac) or \r\n (dos) to \n
   */
  var $config_fix_newlines = true;

  /**#@-*/

  /**
   * If a template cannot be found, this PHP function will be executed.
   * Useful for creating templates on-the-fly or other special action.
   *
   * @var string function name
   */
  var $default_template_handler_func = '';

  /**
   * The file that contains the compiler class. This can a full
   * pathname, or relative to the php_include path.
   *
   * @var string
   */
  var $compiler_file = 'Smarty_Compiler.class.php';

  /**
   * The class used for compiling templates.
   *
   * @var string
   */
  var $compiler_class = 'Smarty_Compiler';

  /**
   * The class used to load config vars.
   *
   * @var string
   */
  var $config_class = 'Config_File';

  /**#@+
   * END Smarty Configuration Section
   * There should be no need to touch anything below this line.
   * @access private
   */

  /**
   * where assigned template vars are kept
   *
   * @var array
   */
  var $_tpl_vars = array();

  /**
   * stores run-time $smarty.* vars
   *
   * @var null|array
   */
  var $_smarty_vars = null;

  /**
   * keeps track of sections
   *
   * @var array
   */
  var $_sections = array();

  /**
   * keeps track of foreach blocks
   *
   * @var array
   */
  var $_foreach = array();

  /**
   * keeps track of tag hierarchy
   *
   * @var array
   */
  var $_tag_stack = array();

  /**
   * configuration object
   *
   * @var Config_file
   */
  var $_conf_obj = null;

  /**
   * loaded configuration settings
   *
   * @var array
   */
  var $_config = array(
    array(
      'vars' => array(),
      'files' => array(),
    ),
  );

  /**
   * md5 checksum of the string 'Smarty'
   *
   * @var string
   */
  var $_smarty_md5 = 'f8d698aea36fcbead2b9d5359ffca76f';

  /**
   * Smarty version number
   *
   * @var string
   */
  var $_version = '2.6.9';

  /**
   * current template inclusion depth
   *
   * @var integer
   */
  var $_inclusion_depth = 0;

  /**
   * for different compiled templates
   *
   * @var string
   */
  var $_compile_id = null;

  /**
   * text in URL to enable debug mode
   *
   * @var string
   */
  var $_smarty_debug_id = 'SMARTY_DEBUG';

  /**
   * debugging information for debug console
   *
   * @var array
   */
  var $_smarty_debug_info = array();

  /**
   * info that makes up a cache file
   *
   * @var array
   */
  var $_cache_info = array();

  /**
   * default file permissions
   *
   * @var integer
   */
  var $_file_perms = 0644;

  /**
   * default dir permissions
   *
   * @var integer
   */
  var $_dir_perms = 0771;

  /**
   * registered objects
   *
   * @var array
   */
  var $_reg_objects = array();

  /**
   * table keeping track of plugins
   *
   * @var array
   */
  var $_plugins = array(
    'modifier' => array(),
    'function' => array(),
    'block' => array(),
    'compiler' => array(),
    'prefilter' => array(),
    'postfilter' => array(),
    'outputfilter' => array(),
    'resource' => array(),
    'insert' => array(),
  );

  /**
   * cache serials
   *
   * @var array
   */
  var $_cache_serials = array();

  /**
   * name of optional cache include file
   *
   * @var string
   */
  var $_cache_include = null;

  /**
   * indicate if the current code is used in a compiled
   * include
   *
   * @var string
   */
  var $_cache_including = false;

  /**#@-*/

  /**
   * The class constructor.
   */
  function Smarty() {
    $this
      ->assign('SCRIPT_NAME', isset($_SERVER['SCRIPT_NAME']) ? $_SERVER['SCRIPT_NAME'] : @$GLOBALS['HTTP_SERVER_VARS']['SCRIPT_NAME']);
  }

  /**
   * assigns values to template variables
   *
   * @param array|string $tpl_var the template variable name(s)
   * @param mixed $value the value to assign
   */
  function assign($tpl_var, $value = null) {
    if (is_array($tpl_var)) {
      foreach ($tpl_var as $key => $val) {
        if ($key != '') {
          $this->_tpl_vars[$key] = $val;
        }
      }
    }
    else {
      if ($tpl_var != '') {
        $this->_tpl_vars[$tpl_var] = $value;
      }
    }
  }

  /**
   * assigns values to template variables by reference
   *
   * @param string $tpl_var the template variable name
   * @param mixed $value the referenced value to assign
   */
  function assign_by_ref($tpl_var, &$value) {
    if ($tpl_var != '') {
      $this->_tpl_vars[$tpl_var] =& $value;
    }
  }

  /**
   * appends values to template variables
   *
   * @param array|string $tpl_var the template variable name(s)
   * @param mixed $value the value to append
   */
  function append($tpl_var, $value = null, $merge = false) {
    if (is_array($tpl_var)) {

      // $tpl_var is an array, ignore $value
      foreach ($tpl_var as $_key => $_val) {
        if ($_key != '') {
          if (!@is_array($this->_tpl_vars[$_key])) {
            settype($this->_tpl_vars[$_key], 'array');
          }
          if ($merge && is_array($_val)) {
            foreach ($_val as $_mkey => $_mval) {
              $this->_tpl_vars[$_key][$_mkey] = $_mval;
            }
          }
          else {
            $this->_tpl_vars[$_key][] = $_val;
          }
        }
      }
    }
    else {
      if ($tpl_var != '' && isset($value)) {
        if (!@is_array($this->_tpl_vars[$tpl_var])) {
          settype($this->_tpl_vars[$tpl_var], 'array');
        }
        if ($merge && is_array($value)) {
          foreach ($value as $_mkey => $_mval) {
            $this->_tpl_vars[$tpl_var][$_mkey] = $_mval;
          }
        }
        else {
          $this->_tpl_vars[$tpl_var][] = $value;
        }
      }
    }
  }

  /**
   * appends values to template variables by reference
   *
   * @param string $tpl_var the template variable name
   * @param mixed $value the referenced value to append
   */
  function append_by_ref($tpl_var, &$value, $merge = false) {
    if ($tpl_var != '' && isset($value)) {
      if (!@is_array($this->_tpl_vars[$tpl_var])) {
        settype($this->_tpl_vars[$tpl_var], 'array');
      }
      if ($merge && is_array($value)) {
        foreach ($value as $_key => $_val) {
          $this->_tpl_vars[$tpl_var][$_key] =& $value[$_key];
        }
      }
      else {
        $this->_tpl_vars[$tpl_var][] =& $value;
      }
    }
  }

  /**
   * clear the given assigned template variable.
   *
   * @param string $tpl_var the template variable to clear
   */
  function clear_assign($tpl_var) {
    if (is_array($tpl_var)) {
      foreach ($tpl_var as $curr_var) {
        unset($this->_tpl_vars[$curr_var]);
      }
    }
    else {
      unset($this->_tpl_vars[$tpl_var]);
    }
  }

  /**
   * Registers custom function to be used in templates
   *
   * @param string $function the name of the template function
   * @param string $function_impl the name of the PHP function to register
   */
  function register_function($function, $function_impl, $cacheable = true, $cache_attrs = null) {
    $this->_plugins['function'][$function] = array(
      $function_impl,
      null,
      null,
      false,
      $cacheable,
      $cache_attrs,
    );
  }

  /**
   * Unregisters custom function
   *
   * @param string $function name of template function
   */
  function unregister_function($function) {
    unset($this->_plugins['function'][$function]);
  }

  /**
   * Registers object to be used in templates
   *
   * @param string $object name of template object
   * @param object &$object_impl the referenced PHP object to register
   * @param null|array $allowed list of allowed methods (empty = all)
   * @param boolean $smarty_args smarty argument format, else traditional
   * @param null|array $block_functs list of methods that are block format
   */
  function register_object($object, &$object_impl, $allowed = array(), $smarty_args = true, $block_methods = array()) {
    settype($allowed, 'array');
    settype($smarty_args, 'boolean');
    $this->_reg_objects[$object] = array(
      &$object_impl,
      $allowed,
      $smarty_args,
      $block_methods,
    );
  }

  /**
   * Unregisters object
   *
   * @param string $object name of template object
   */
  function unregister_object($object) {
    unset($this->_reg_objects[$object]);
  }

  /**
   * Registers block function to be used in templates
   *
   * @param string $block name of template block
   * @param string $block_impl PHP function to register
   */
  function register_block($block, $block_impl, $cacheable = true, $cache_attrs = null) {
    $this->_plugins['block'][$block] = array(
      $block_impl,
      null,
      null,
      false,
      $cacheable,
      $cache_attrs,
    );
  }

  /**
   * Unregisters block function
   *
   * @param string $block name of template function
   */
  function unregister_block($block) {
    unset($this->_plugins['block'][$block]);
  }

  /**
   * Registers compiler function
   *
   * @param string $function name of template function
   * @param string $function_impl name of PHP function to register
   */
  function register_compiler_function($function, $function_impl, $cacheable = true) {
    $this->_plugins['compiler'][$function] = array(
      $function_impl,
      null,
      null,
      false,
      $cacheable,
    );
  }

  /**
   * Unregisters compiler function
   *
   * @param string $function name of template function
   */
  function unregister_compiler_function($function) {
    unset($this->_plugins['compiler'][$function]);
  }

  /**
   * Registers modifier to be used in templates
   *
   * @param string $modifier name of template modifier
   * @param string $modifier_impl name of PHP function to register
   */
  function register_modifier($modifier, $modifier_impl) {
    $this->_plugins['modifier'][$modifier] = array(
      $modifier_impl,
      null,
      null,
      false,
    );
  }

  /**
   * Unregisters modifier
   *
   * @param string $modifier name of template modifier
   */
  function unregister_modifier($modifier) {
    unset($this->_plugins['modifier'][$modifier]);
  }

  /**
   * Registers a resource to fetch a template
   *
   * @param string $type name of resource
   * @param array $functions array of functions to handle resource
   */
  function register_resource($type, $functions) {
    if (count($functions) == 4) {
      $this->_plugins['resource'][$type] = array(
        $functions,
        false,
      );
    }
    elseif (count($functions) == 5) {
      $this->_plugins['resource'][$type] = array(
        array(
          array(
            &$functions[0],
            $functions[1],
          ),
          array(
            &$functions[0],
            $functions[2],
          ),
          array(
            &$functions[0],
            $functions[3],
          ),
          array(
            &$functions[0],
            $functions[4],
          ),
        ),
        false,
      );
    }
    else {
      $this
        ->trigger_error("malformed function-list for '{$type}' in register_resource");
    }
  }

  /**
   * Unregisters a resource
   *
   * @param string $type name of resource
   */
  function unregister_resource($type) {
    unset($this->_plugins['resource'][$type]);
  }

  /**
   * Registers a prefilter function to apply
   * to a template before compiling
   *
   * @param string $function name of PHP function to register
   */
  function register_prefilter($function) {
    $_name = is_array($function) ? $function[1] : $function;
    $this->_plugins['prefilter'][$_name] = array(
      $function,
      null,
      null,
      false,
    );
  }

  /**
   * Unregisters a prefilter function
   *
   * @param string $function name of PHP function
   */
  function unregister_prefilter($function) {
    unset($this->_plugins['prefilter'][$function]);
  }

  /**
   * Registers a postfilter function to apply
   * to a compiled template after compilation
   *
   * @param string $function name of PHP function to register
   */
  function register_postfilter($function) {
    $_name = is_array($function) ? $function[1] : $function;
    $this->_plugins['postfilter'][$_name] = array(
      $function,
      null,
      null,
      false,
    );
  }

  /**
   * Unregisters a postfilter function
   *
   * @param string $function name of PHP function
   */
  function unregister_postfilter($function) {
    unset($this->_plugins['postfilter'][$function]);
  }

  /**
   * Registers an output filter function to apply
   * to a template output
   *
   * @param string $function name of PHP function
   */
  function register_outputfilter($function) {
    $_name = is_array($function) ? $function[1] : $function;
    $this->_plugins['outputfilter'][$_name] = array(
      $function,
      null,
      null,
      false,
    );
  }

  /**
   * Unregisters an outputfilter function
   *
   * @param string $function name of PHP function
   */
  function unregister_outputfilter($function) {
    unset($this->_plugins['outputfilter'][$function]);
  }

  /**
   * load a filter of specified type and name
   *
   * @param string $type filter type
   * @param string $name filter name
   */
  function load_filter($type, $name) {
    switch ($type) {
      case 'output':
        $_params = array(
          'plugins' => array(
            array(
              $type . 'filter',
              $name,
              null,
              null,
              false,
            ),
          ),
        );
        require_once SMARTY_CORE_DIR . 'core.load_plugins.php';
        smarty_core_load_plugins($_params, $this);
        break;
      case 'pre':
      case 'post':
        if (!isset($this->_plugins[$type . 'filter'][$name])) {
          $this->_plugins[$type . 'filter'][$name] = false;
        }
        break;
    }
  }

  /**
   * clear cached content for the given template and cache id
   *
   * @param string $tpl_file name of template file
   * @param string $cache_id name of cache_id
   * @param string $compile_id name of compile_id
   * @param string $exp_time expiration time
   * @return boolean
   */
  function clear_cache($tpl_file = null, $cache_id = null, $compile_id = null, $exp_time = null) {
    if (!isset($compile_id)) {
      $compile_id = $this->compile_id;
    }
    if (!isset($tpl_file)) {
      $compile_id = null;
    }
    $_auto_id = $this
      ->_get_auto_id($cache_id, $compile_id);
    if (!empty($this->cache_handler_func)) {
      return call_user_func_array($this->cache_handler_func, array(
        'clear',
        &$this,
        &$dummy,
        $tpl_file,
        $cache_id,
        $compile_id,
        $exp_time,
      ));
    }
    else {
      $_params = array(
        'auto_base' => $this->cache_dir,
        'auto_source' => $tpl_file,
        'auto_id' => $_auto_id,
        'exp_time' => $exp_time,
      );
      require_once SMARTY_CORE_DIR . 'core.rm_auto.php';
      return smarty_core_rm_auto($_params, $this);
    }
  }

  /**
   * clear the entire contents of cache (all templates)
   *
   * @param string $exp_time expire time
   * @return boolean results of {@link smarty_core_rm_auto()}
   */
  function clear_all_cache($exp_time = null) {
    return $this
      ->clear_cache(null, null, null, $exp_time);
  }

  /**
   * test to see if valid cache exists for this template
   *
   * @param string $tpl_file name of template file
   * @param string $cache_id
   * @param string $compile_id
   * @return string|false results of {@link _read_cache_file()}
   */
  function is_cached($tpl_file, $cache_id = null, $compile_id = null) {
    if (!$this->caching) {
      return false;
    }
    if (!isset($compile_id)) {
      $compile_id = $this->compile_id;
    }
    $_params = array(
      'tpl_file' => $tpl_file,
      'cache_id' => $cache_id,
      'compile_id' => $compile_id,
    );
    require_once SMARTY_CORE_DIR . 'core.read_cache_file.php';
    return smarty_core_read_cache_file($_params, $this);
  }

  /**
   * clear all the assigned template variables.
   *
   */
  function clear_all_assign() {
    $this->_tpl_vars = array();
  }

  /**
   * clears compiled version of specified template resource,
   * or all compiled template files if one is not specified.
   * This function is for advanced use only, not normally needed.
   *
   * @param string $tpl_file
   * @param string $compile_id
   * @param string $exp_time
   * @return boolean results of {@link smarty_core_rm_auto()}
   */
  function clear_compiled_tpl($tpl_file = null, $compile_id = null, $exp_time = null) {
    if (!isset($compile_id)) {
      $compile_id = $this->compile_id;
    }
    $_params = array(
      'auto_base' => $this->compile_dir,
      'auto_source' => $tpl_file,
      'auto_id' => $compile_id,
      'exp_time' => $exp_time,
      'extensions' => array(
        '.inc',
        '.php',
      ),
    );
    require_once SMARTY_CORE_DIR . 'core.rm_auto.php';
    return smarty_core_rm_auto($_params, $this);
  }

  /**
   * Checks whether requested template exists.
   *
   * @param string $tpl_file
   * @return boolean
   */
  function template_exists($tpl_file) {
    $_params = array(
      'resource_name' => $tpl_file,
      'quiet' => true,
      'get_source' => false,
    );
    return $this
      ->_fetch_resource_info($_params);
  }

  /**
   * Returns an array containing template variables
   *
   * @param string $name
   * @param string $type
   * @return array
   */
  function &get_template_vars($name = null) {
    if (!isset($name)) {
      return $this->_tpl_vars;
    }
    if (isset($this->_tpl_vars[$name])) {
      return $this->_tpl_vars[$name];
    }
  }

  /**
   * Returns an array containing config variables
   *
   * @param string $name
   * @param string $type
   * @return array
   */
  function &get_config_vars($name = null) {
    if (!isset($name) && is_array($this->_config[0])) {
      return $this->_config[0]['vars'];
    }
    else {
      if (isset($this->_config[0]['vars'][$name])) {
        return $this->_config[0]['vars'][$name];
      }
    }
  }

  /**
   * trigger Smarty error
   *
   * @param string $error_msg
   * @param integer $error_type
   */
  function trigger_error($error_msg, $error_type = E_USER_WARNING) {
    trigger_error("Smarty error: {$error_msg}", $error_type);
  }

  /**
   * executes & displays the template results
   *
   * @param string $resource_name
   * @param string $cache_id
   * @param string $compile_id
   */
  function display($resource_name, $cache_id = null, $compile_id = null) {
    $this
      ->fetch($resource_name, $cache_id, $compile_id, true);
  }

  /**
   * executes & returns or displays the template results
   *
   * @param string $resource_name
   * @param string $cache_id
   * @param string $compile_id
   * @param boolean $display
   */
  function fetch($resource_name, $cache_id = null, $compile_id = null, $display = false) {
    static $_cache_info = array();
    $_smarty_old_error_level = $this->debugging ? error_reporting() : error_reporting(isset($this->error_reporting) ? $this->error_reporting : error_reporting() & ~E_NOTICE);
    if (!$this->debugging && $this->debugging_ctrl == 'URL') {
      $_query_string = $this->request_use_auto_globals ? $_SERVER['QUERY_STRING'] : $GLOBALS['HTTP_SERVER_VARS']['QUERY_STRING'];
      if (@strstr($_query_string, $this->_smarty_debug_id)) {
        if (@strstr($_query_string, $this->_smarty_debug_id . '=on')) {

          // enable debugging for this browser session
          @setcookie('SMARTY_DEBUG', true);
          $this->debugging = true;
        }
        elseif (@strstr($_query_string, $this->_smarty_debug_id . '=off')) {

          // disable debugging for this browser session
          @setcookie('SMARTY_DEBUG', false);
          $this->debugging = false;
        }
        else {

          // enable debugging for this page
          $this->debugging = true;
        }
      }
      else {
        $this->debugging = (bool) ($this->request_use_auto_globals ? @$_COOKIE['SMARTY_DEBUG'] : @$GLOBALS['HTTP_COOKIE_VARS']['SMARTY_DEBUG']);
      }
    }
    if ($this->debugging) {

      // capture time for debugging info
      $_params = array();
      require_once SMARTY_CORE_DIR . 'core.get_microtime.php';
      $_debug_start_time = smarty_core_get_microtime($_params, $this);
      $this->_smarty_debug_info[] = array(
        'type' => 'template',
        'filename' => $resource_name,
        'depth' => 0,
      );
      $_included_tpls_idx = count($this->_smarty_debug_info) - 1;
    }
    if (!isset($compile_id)) {
      $compile_id = $this->compile_id;
    }
    $this->_compile_id = $compile_id;
    $this->_inclusion_depth = 0;
    if ($this->caching) {

      // save old cache_info, initialize cache_info
      array_push($_cache_info, $this->_cache_info);
      $this->_cache_info = array();
      $_params = array(
        'tpl_file' => $resource_name,
        'cache_id' => $cache_id,
        'compile_id' => $compile_id,
        'results' => null,
      );
      require_once SMARTY_CORE_DIR . 'core.read_cache_file.php';
      if (smarty_core_read_cache_file($_params, $this)) {
        $_smarty_results = $_params['results'];
        if (!empty($this->_cache_info['insert_tags'])) {
          $_params = array(
            'plugins' => $this->_cache_info['insert_tags'],
          );
          require_once SMARTY_CORE_DIR . 'core.load_plugins.php';
          smarty_core_load_plugins($_params, $this);
          $_params = array(
            'results' => $_smarty_results,
          );
          require_once SMARTY_CORE_DIR . 'core.process_cached_inserts.php';
          $_smarty_results = smarty_core_process_cached_inserts($_params, $this);
        }
        if (!empty($this->_cache_info['cache_serials'])) {
          $_params = array(
            'results' => $_smarty_results,
          );
          require_once SMARTY_CORE_DIR . 'core.process_compiled_include.php';
          $_smarty_results = smarty_core_process_compiled_include($_params, $this);
        }
        if ($display) {
          if ($this->debugging) {

            // capture time for debugging info
            $_params = array();
            require_once SMARTY_CORE_DIR . 'core.get_microtime.php';
            $this->_smarty_debug_info[$_included_tpls_idx]['exec_time'] = smarty_core_get_microtime($_params, $this) - $_debug_start_time;
            require_once SMARTY_CORE_DIR . 'core.display_debug_console.php';
            $_smarty_results .= smarty_core_display_debug_console($_params, $this);
          }
          if ($this->cache_modified_check) {
            $_server_vars = $this->request_use_auto_globals ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS'];
            $_last_modified_date = @substr($_server_vars['HTTP_IF_MODIFIED_SINCE'], 0, strpos($_server_vars['HTTP_IF_MODIFIED_SINCE'], 'GMT') + 3);
            $_gmt_mtime = gmdate('D, d M Y H:i:s', $this->_cache_info['timestamp']) . ' GMT';
            if (@count($this->_cache_info['insert_tags']) == 0 && !$this->_cache_serials && $_gmt_mtime == $_last_modified_date) {
              if (php_sapi_name() == 'cgi') {
                header('Status: 304 Not Modified');
              }
              else {
                header('HTTP/1.1 304 Not Modified');
              }
            }
            else {
              header('Last-Modified: ' . $_gmt_mtime);
              echo $_smarty_results;
            }
          }
          else {
            echo $_smarty_results;
          }
          error_reporting($_smarty_old_error_level);

          // restore initial cache_info
          $this->_cache_info = array_pop($_cache_info);
          return true;
        }
        else {
          error_reporting($_smarty_old_error_level);

          // restore initial cache_info
          $this->_cache_info = array_pop($_cache_info);
          return $_smarty_results;
        }
      }
      else {
        $this->_cache_info['template'][$resource_name] = true;
        if ($this->cache_modified_check && $display) {
          header('Last-Modified: ' . gmdate('D, d M Y H:i:s', time()) . ' GMT');
        }
      }
    }

    // load filters that are marked as autoload
    if (count($this->autoload_filters)) {
      foreach ($this->autoload_filters as $_filter_type => $_filters) {
        foreach ($_filters as $_filter) {
          $this
            ->load_filter($_filter_type, $_filter);
        }
      }
    }
    $_smarty_compile_path = $this
      ->_get_compile_path($resource_name);

    // if we just need to display the results, don't perform output
    // buffering - for speed
    $_cache_including = $this->_cache_including;
    $this->_cache_including = false;
    if ($display && !$this->caching && count($this->_plugins['outputfilter']) == 0) {
      if ($this
        ->_is_compiled($resource_name, $_smarty_compile_path) || $this
        ->_compile_resource($resource_name, $_smarty_compile_path)) {
        include $_smarty_compile_path;
      }
    }
    else {
      ob_start();
      if ($this
        ->_is_compiled($resource_name, $_smarty_compile_path) || $this
        ->_compile_resource($resource_name, $_smarty_compile_path)) {
        include $_smarty_compile_path;
      }
      $_smarty_results = ob_get_contents();
      ob_end_clean();
      foreach ((array) $this->_plugins['outputfilter'] as $_output_filter) {
        $_smarty_results = call_user_func_array($_output_filter[0], array(
          $_smarty_results,
          &$this,
        ));
      }
    }
    if ($this->caching) {
      $_params = array(
        'tpl_file' => $resource_name,
        'cache_id' => $cache_id,
        'compile_id' => $compile_id,
        'results' => $_smarty_results,
      );
      require_once SMARTY_CORE_DIR . 'core.write_cache_file.php';
      smarty_core_write_cache_file($_params, $this);
      require_once SMARTY_CORE_DIR . 'core.process_cached_inserts.php';
      $_smarty_results = smarty_core_process_cached_inserts($_params, $this);
      if ($this->_cache_serials) {

        // strip nocache-tags from output
        $_smarty_results = preg_replace('!(\\{/?nocache\\:[0-9a-f]{32}#\\d+\\})!s', '', $_smarty_results);
      }

      // restore initial cache_info
      $this->_cache_info = array_pop($_cache_info);
    }
    $this->_cache_including = $_cache_including;
    if ($display) {
      if (isset($_smarty_results)) {
        echo $_smarty_results;
      }
      if ($this->debugging) {

        // capture time for debugging info
        $_params = array();
        require_once SMARTY_CORE_DIR . 'core.get_microtime.php';
        $this->_smarty_debug_info[$_included_tpls_idx]['exec_time'] = smarty_core_get_microtime($_params, $this) - $_debug_start_time;
        require_once SMARTY_CORE_DIR . 'core.display_debug_console.php';
        echo smarty_core_display_debug_console($_params, $this);
      }
      error_reporting($_smarty_old_error_level);
      return;
    }
    else {
      error_reporting($_smarty_old_error_level);
      if (isset($_smarty_results)) {
        return $_smarty_results;
      }
    }
  }

  /**
   * load configuration values
   *
   * @param string $file
   * @param string $section
   * @param string $scope
   */
  function config_load($file, $section = null, $scope = 'global') {
    require_once $this
      ->_get_plugin_filepath('function', 'config_load');
    smarty_function_config_load(array(
      'file' => $file,
      'section' => $section,
      'scope' => $scope,
    ), $this);
  }

  /**
   * return a reference to a registered object
   *
   * @param string $name
   * @return object
   */
  function &get_registered_object($name) {
    if (!isset($this->_reg_objects[$name])) {
      $this
        ->_trigger_fatal_error("'{$name}' is not a registered object");
    }
    if (!is_object($this->_reg_objects[$name][0])) {
      $this
        ->_trigger_fatal_error("registered '{$name}' is not an object");
    }
    return $this->_reg_objects[$name][0];
  }

  /**
   * clear configuration values
   *
   * @param string $var
   */
  function clear_config($var = null) {
    if (!isset($var)) {

      // clear all values
      $this->_config = array(
        array(
          'vars' => array(),
          'files' => array(),
        ),
      );
    }
    else {
      unset($this->_config[0]['vars'][$var]);
    }
  }

  /**
   * get filepath of requested plugin
   *
   * @param string $type
   * @param string $name
   * @return string|false
   */
  function _get_plugin_filepath($type, $name) {
    $_params = array(
      'type' => $type,
      'name' => $name,
    );
    require_once SMARTY_CORE_DIR . 'core.assemble_plugin_filepath.php';
    return smarty_core_assemble_plugin_filepath($_params, $this);
  }

  /**
   * test if resource needs compiling
   *
   * @param string $resource_name
   * @param string $compile_path
   * @return boolean
   */
  function _is_compiled($resource_name, $compile_path) {
    if (!$this->force_compile && file_exists($compile_path)) {
      if (!$this->compile_check) {

        // no need to check compiled file
        return true;
      }
      else {

        // get file source and timestamp
        $_params = array(
          'resource_name' => $resource_name,
          'get_source' => false,
        );
        if (!$this
          ->_fetch_resource_info($_params)) {
          return false;
        }
        if ($_params['resource_timestamp'] <= filemtime($compile_path)) {

          // template not expired, no recompile
          return true;
        }
        else {

          // compile template
          return false;
        }
      }
    }
    else {

      // compiled template does not exist, or forced compile
      return false;
    }
  }

  /**
   * compile the template
   *
   * @param string $resource_name
   * @param string $compile_path
   * @return boolean
   */
  function _compile_resource($resource_name, $compile_path) {
    $_params = array(
      'resource_name' => $resource_name,
    );
    if (!$this
      ->_fetch_resource_info($_params)) {
      return false;
    }
    $_source_content = $_params['source_content'];
    $_cache_include = substr($compile_path, 0, -4) . '.inc';
    if ($this
      ->_compile_source($resource_name, $_source_content, $_compiled_content, $_cache_include)) {

      // if a _cache_serial was set, we also have to write an include-file:
      if ($this->_cache_include_info) {
        require_once SMARTY_CORE_DIR . 'core.write_compiled_include.php';
        smarty_core_write_compiled_include(array_merge($this->_cache_include_info, array(
          'compiled_content' => $_compiled_content,
          'resource_name' => $resource_name,
        )), $this);
      }
      $_params = array(
        'compile_path' => $compile_path,
        'compiled_content' => $_compiled_content,
      );
      require_once SMARTY_CORE_DIR . 'core.write_compiled_resource.php';
      smarty_core_write_compiled_resource($_params, $this);
      return true;
    }
    else {
      return false;
    }
  }

  /**
   * compile the given source
   *
   * @param string $resource_name
   * @param string $source_content
   * @param string $compiled_content
   * @return boolean
   */
  function _compile_source($resource_name, &$source_content, &$compiled_content, $cache_include_path = null) {
    if (file_exists(SMARTY_DIR . $this->compiler_file)) {
      require_once SMARTY_DIR . $this->compiler_file;
    }
    else {

      // use include_path
      require_once $this->compiler_file;
    }
    $smarty_compiler = new $this->compiler_class();
    $smarty_compiler->template_dir = $this->template_dir;
    $smarty_compiler->compile_dir = $this->compile_dir;
    $smarty_compiler->plugins_dir = $this->plugins_dir;
    $smarty_compiler->config_dir = $this->config_dir;
    $smarty_compiler->force_compile = $this->force_compile;
    $smarty_compiler->caching = $this->caching;
    $smarty_compiler->php_handling = $this->php_handling;
    $smarty_compiler->left_delimiter = $this->left_delimiter;
    $smarty_compiler->right_delimiter = $this->right_delimiter;
    $smarty_compiler->_version = $this->_version;
    $smarty_compiler->security = $this->security;
    $smarty_compiler->secure_dir = $this->secure_dir;
    $smarty_compiler->security_settings = $this->security_settings;
    $smarty_compiler->trusted_dir = $this->trusted_dir;
    $smarty_compiler->use_sub_dirs = $this->use_sub_dirs;
    $smarty_compiler->_reg_objects =& $this->_reg_objects;
    $smarty_compiler->_plugins =& $this->_plugins;
    $smarty_compiler->_tpl_vars =& $this->_tpl_vars;
    $smarty_compiler->default_modifiers = $this->default_modifiers;
    $smarty_compiler->compile_id = $this->_compile_id;
    $smarty_compiler->_config = $this->_config;
    $smarty_compiler->request_use_auto_globals = $this->request_use_auto_globals;
    if (isset($cache_include_path) && isset($this->_cache_serials[$cache_include_path])) {
      $smarty_compiler->_cache_serial = $this->_cache_serials[$cache_include_path];
    }
    $smarty_compiler->_cache_include = $cache_include_path;
    $_results = $smarty_compiler
      ->_compile_file($resource_name, $source_content, $compiled_content);
    if ($smarty_compiler->_cache_serial) {
      $this->_cache_include_info = array(
        'cache_serial' => $smarty_compiler->_cache_serial,
        'plugins_code' => $smarty_compiler->_plugins_code,
        'include_file_path' => $cache_include_path,
      );
    }
    else {
      $this->_cache_include_info = null;
    }
    return $_results;
  }

  /**
   * Get the compile path for this resource
   *
   * @param string $resource_name
   * @return string results of {@link _get_auto_filename()}
   */
  function _get_compile_path($resource_name) {
    return $this
      ->_get_auto_filename($this->compile_dir, $resource_name, $this->_compile_id) . '.php';
  }

  /**
   * fetch the template info. Gets timestamp, and source
   * if get_source is true
   *
   * sets $source_content to the source of the template, and
   * $resource_timestamp to its time stamp
   * @param string $resource_name
   * @param string $source_content
   * @param integer $resource_timestamp
   * @param boolean $get_source
   * @param boolean $quiet
   * @return boolean
   */
  function _fetch_resource_info(&$params) {
    if (!isset($params['get_source'])) {
      $params['get_source'] = true;
    }
    if (!isset($params['quiet'])) {
      $params['quiet'] = false;
    }
    $_return = false;
    $_params = array(
      'resource_name' => $params['resource_name'],
    );
    if (isset($params['resource_base_path'])) {
      $_params['resource_base_path'] = $params['resource_base_path'];
    }
    else {
      $_params['resource_base_path'] = $this->template_dir;
    }
    if ($this
      ->_parse_resource_name($_params)) {
      $_resource_type = $_params['resource_type'];
      $_resource_name = $_params['resource_name'];
      switch ($_resource_type) {
        case 'file':
          if ($params['get_source']) {
            $params['source_content'] = $this
              ->_read_file($_resource_name);
          }
          $params['resource_timestamp'] = filemtime($_resource_name);
          $_return = is_file($_resource_name);
          break;
        default:

          // call resource functions to fetch the template source and timestamp
          if ($params['get_source']) {
            $_source_return = isset($this->_plugins['resource'][$_resource_type]) && call_user_func_array($this->_plugins['resource'][$_resource_type][0][0], array(
              $_resource_name,
              &$params['source_content'],
              &$this,
            ));
          }
          else {
            $_source_return = true;
          }
          $_timestamp_return = isset($this->_plugins['resource'][$_resource_type]) && call_user_func_array($this->_plugins['resource'][$_resource_type][0][1], array(
            $_resource_name,
            &$params['resource_timestamp'],
            &$this,
          ));
          $_return = $_source_return && $_timestamp_return;
          break;
      }
    }
    if (!$_return) {

      // see if we can get a template with the default template handler
      if (!empty($this->default_template_handler_func)) {
        if (!is_callable($this->default_template_handler_func)) {
          $this
            ->trigger_error("default template handler function \"{$this->default_template_handler_func}\" doesn't exist.");
        }
        else {
          $_return = call_user_func_array($this->default_template_handler_func, array(
            $_params['resource_type'],
            $_params['resource_name'],
            &$params['source_content'],
            &$params['resource_timestamp'],
            &$this,
          ));
        }
      }
    }
    if (!$_return) {
      if (!$params['quiet']) {
        $this
          ->trigger_error('unable to read resource: "' . $params['resource_name'] . '"');
      }
    }
    else {
      if ($_return && $this->security) {
        require_once SMARTY_CORE_DIR . 'core.is_secure.php';
        if (!smarty_core_is_secure($_params, $this)) {
          if (!$params['quiet']) {
            $this
              ->trigger_error('(secure mode) accessing "' . $params['resource_name'] . '" is not allowed');
          }
          $params['source_content'] = null;
          $params['resource_timestamp'] = null;
          return false;
        }
      }
    }
    return $_return;
  }

  /**
   * parse out the type and name from the resource
   *
   * @param string $resource_base_path
   * @param string $resource_name
   * @param string $resource_type
   * @param string $resource_name
   * @return boolean
   */
  function _parse_resource_name(&$params) {

    // split tpl_path by the first colon
    $_resource_name_parts = explode(':', $params['resource_name'], 2);
    if (count($_resource_name_parts) == 1) {

      // no resource type given
      $params['resource_type'] = $this->default_resource_type;
      $params['resource_name'] = $_resource_name_parts[0];
    }
    else {
      if (strlen($_resource_name_parts[0]) == 1) {

        // 1 char is not resource type, but part of filepath
        $params['resource_type'] = $this->default_resource_type;
        $params['resource_name'] = $params['resource_name'];
      }
      else {
        $params['resource_type'] = $_resource_name_parts[0];
        $params['resource_name'] = $_resource_name_parts[1];
      }
    }
    if ($params['resource_type'] == 'file') {
      if (!preg_match('/^([\\/\\\\]|[a-zA-Z]:[\\/\\\\])/', $params['resource_name'])) {

        // relative pathname to $params['resource_base_path']
        // use the first directory where the file is found
        foreach ((array) $params['resource_base_path'] as $_curr_path) {
          $_fullpath = $_curr_path . DIRECTORY_SEPARATOR . $params['resource_name'];
          if (file_exists($_fullpath) && is_file($_fullpath)) {
            $params['resource_name'] = $_fullpath;
            return true;
          }

          // didn't find the file, try include_path
          $_params = array(
            'file_path' => $_fullpath,
          );
          require_once SMARTY_CORE_DIR . 'core.get_include_path.php';
          if (smarty_core_get_include_path($_params, $this)) {
            $params['resource_name'] = $_params['new_file_path'];
            return true;
          }
        }
        return false;
      }
      else {

        /* absolute path */
        return file_exists($params['resource_name']);
      }
    }
    elseif (empty($this->_plugins['resource'][$params['resource_type']])) {
      $_params = array(
        'type' => $params['resource_type'],
      );
      require_once SMARTY_CORE_DIR . 'core.load_resource_plugin.php';
      smarty_core_load_resource_plugin($_params, $this);
    }
    return true;
  }

  /**
   * Handle modifiers
   *
   * @param string|null $modifier_name
   * @param array|null $map_array
   * @return string result of modifiers
   */
  function _run_mod_handler() {
    $_args = func_get_args();
    list($_modifier_name, $_map_array) = array_splice($_args, 0, 2);
    list($_func_name, $_tpl_file, $_tpl_line) = $this->_plugins['modifier'][$_modifier_name];
    $_var = $_args[0];
    foreach ($_var as $_key => $_val) {
      $_args[0] = $_val;
      $_var[$_key] = call_user_func_array($_func_name, $_args);
    }
    return $_var;
  }

  /**
   * Remove starting and ending quotes from the string
   *
   * @param string $string
   * @return string
   */
  function _dequote($string) {
    if (($string[0] == "'" || $string[0] == '"') && $string[strlen($string) - 1] == $string[0]) {
      return substr($string, 1, -1);
    }
    else {
      return $string;
    }
  }

  /**
   * read in a file
   *
   * @param string $filename
   * @return string
   */
  function _read_file($filename) {
    if (file_exists($filename) && ($fd = @fopen($filename, 'rb'))) {
      $contents = ($size = filesize($filename)) ? fread($fd, $size) : '';
      fclose($fd);
      return $contents;
    }
    else {
      return false;
    }
  }

  /**
   * get a concrete filename for automagically created content
   *
   * @param string $auto_base
   * @param string $auto_source
   * @param string $auto_id
   * @return string
   * @staticvar string|null
   * @staticvar string|null
   */
  function _get_auto_filename($auto_base, $auto_source = null, $auto_id = null) {
    $_compile_dir_sep = $this->use_sub_dirs ? DIRECTORY_SEPARATOR : '^';
    $_return = $auto_base . DIRECTORY_SEPARATOR;
    if (isset($auto_id)) {

      // make auto_id safe for directory names
      $auto_id = str_replace('%7C', $_compile_dir_sep, urlencode($auto_id));

      // split into separate directories
      $_return .= $auto_id . $_compile_dir_sep;
    }
    if (isset($auto_source)) {

      // make source name safe for filename
      $_filename = urlencode(basename($auto_source));
      $_crc32 = sprintf('%08X', crc32($auto_source));

      // prepend %% to avoid name conflicts with
      // with $params['auto_id'] names
      $_crc32 = substr($_crc32, 0, 2) . $_compile_dir_sep . substr($_crc32, 0, 3) . $_compile_dir_sep . $_crc32;
      $_return .= '%%' . $_crc32 . '%%' . $_filename;
    }
    return $_return;
  }

  /**
   * unlink a file, possibly using expiration time
   *
   * @param string $resource
   * @param integer $exp_time
   */
  function _unlink($resource, $exp_time = null) {
    if (isset($exp_time)) {
      if (time() - @filemtime($resource) >= $exp_time) {
        return @unlink($resource);
      }
    }
    else {
      return @unlink($resource);
    }
  }

  /**
   * returns an auto_id for auto-file-functions
   *
   * @param string $cache_id
   * @param string $compile_id
   * @return string|null
   */
  function _get_auto_id($cache_id = null, $compile_id = null) {
    if (isset($cache_id)) {
      return isset($compile_id) ? $cache_id . '|' . $compile_id : $cache_id;
    }
    elseif (isset($compile_id)) {
      return $compile_id;
    }
    else {
      return null;
    }
  }

  /**
   * trigger Smarty plugin error
   *
   * @param string $error_msg
   * @param string $tpl_file
   * @param integer $tpl_line
   * @param string $file
   * @param integer $line
   * @param integer $error_type
   */
  function _trigger_fatal_error($error_msg, $tpl_file = null, $tpl_line = null, $file = null, $line = null, $error_type = E_USER_ERROR) {
    if (isset($file) && isset($line)) {
      $info = ' (' . basename($file) . ", line {$line})";
    }
    else {
      $info = '';
    }
    if (isset($tpl_line) && isset($tpl_file)) {
      $this
        ->trigger_error('[in ' . $tpl_file . ' line ' . $tpl_line . "]: {$error_msg}{$info}", $error_type);
    }
    else {
      $this
        ->trigger_error($error_msg . $info, $error_type);
    }
  }

  /**
   * callback function for preg_replace, to call a non-cacheable block
   * @return string
   */
  function _process_compiled_include_callback($match) {
    $_func = '_smarty_tplfunc_' . $match[2] . '_' . $match[3];
    ob_start();
    $_func($this);
    $_ret = ob_get_contents();
    ob_end_clean();
    return $_ret;
  }

  /**
   * called for included templates
   *
   * @param string $_smarty_include_tpl_file
   * @param string $_smarty_include_vars
   */

  // $_smarty_include_tpl_file, $_smarty_include_vars
  function _smarty_include($params) {
    if ($this->debugging) {
      $_params = array();
      require_once SMARTY_CORE_DIR . 'core.get_microtime.php';
      $debug_start_time = smarty_core_get_microtime($_params, $this);
      $this->_smarty_debug_info[] = array(
        'type' => 'template',
        'filename' => $params['smarty_include_tpl_file'],
        'depth' => ++$this->_inclusion_depth,
      );
      $included_tpls_idx = count($this->_smarty_debug_info) - 1;
    }
    $this->_tpl_vars = array_merge($this->_tpl_vars, $params['smarty_include_vars']);

    // config vars are treated as local, so push a copy of the
    // current ones onto the front of the stack
    array_unshift($this->_config, $this->_config[0]);
    $_smarty_compile_path = $this
      ->_get_compile_path($params['smarty_include_tpl_file']);
    if ($this
      ->_is_compiled($params['smarty_include_tpl_file'], $_smarty_compile_path) || $this
      ->_compile_resource($params['smarty_include_tpl_file'], $_smarty_compile_path)) {
      include $_smarty_compile_path;
    }

    // pop the local vars off the front of the stack
    array_shift($this->_config);
    $this->_inclusion_depth--;
    if ($this->debugging) {

      // capture time for debugging info
      $_params = array();
      require_once SMARTY_CORE_DIR . 'core.get_microtime.php';
      $this->_smarty_debug_info[$included_tpls_idx]['exec_time'] = smarty_core_get_microtime($_params, $this) - $debug_start_time;
    }
    if ($this->caching) {
      $this->_cache_info['template'][$params['smarty_include_tpl_file']] = true;
    }
  }

  /**
   * get or set an array of cached attributes for function that is
   * not cacheable
   * @return array
   */
  function &_smarty_cache_attrs($cache_serial, $count) {
    $_cache_attrs =& $this->_cache_info['cache_attrs'][$cache_serial][$count];
    if ($this->_cache_including) {

      /* return next set of cache_attrs */
      $_return =& current($_cache_attrs);
      next($_cache_attrs);
      return $_return;
    }
    else {

      /* add a reference to a new set of cache_attrs */
      $_cache_attrs[] = array();
      return $_cache_attrs[count($_cache_attrs) - 1];
    }
  }

  /**
   * wrapper for include() retaining $this
   * @return mixed
   */
  function _include($filename, $once = false, $params = null) {
    if ($once) {
      return include_once $filename;
    }
    else {
      return include $filename;
    }
  }

  /**
   * wrapper for eval() retaining $this
   * @return mixed
   */
  function _eval($code, $params = null) {
    return eval($code);
  }

}

/* vim: set expandtab: */
Constants

Name	Description
SMARTY_PHP_ALLOW
SMARTY_PHP_PASSTHRU
SMARTY_PHP_QUOTE
SMARTY_PHP_REMOVE
Classes

Name	Description
Smarty	@package Smarty
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Smarty.class.php in Quiz 6.6

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