Location: PHPKode > projects > Neobill > NeoBill0.5.6/solidworks/smarty/Smarty.class.php
<?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-hide@address.com
 *
 * @link http://smarty.php.net/
 * @copyright 2001-2005 New Digital Group, Inc.
 * @copyright 2009 Yves Kreis <hide@address.com>
 * @author Monte Ohrt <monte at ohrt dot com>
 * @author Andrei Zmievski <hide@address.com>
 * @package Smarty
 * @version 2.6.14
 */

/* $Id: Smarty.class.php,v 1.524 2006/01/18 19:02:52 mohrt Exp $ */

/**
 * 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 . 'internals' . 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              = '2.6.14';

	/**
	 * 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 $this->_tpl_vars;
		} elseif(isset($this->_tpl_vars[$name])) {
			return $this->_tpl_vars[$name];
		} else {
			// var non-existant, return valid reference
			$_tmp = null;
			return $_tmp;
		}
	}

	/**
	 * 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];
		} else {
			// var non-existant, return valid reference
			$_tmp = null;
			return $_tmp;
		}
	}

	/**
	 * 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 ((substr($string, 0, 1) == "'" || substr($string, 0, 1) == '"') &&
				substr($string, -1) == substr($string, 0, 1))
			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')) ) {
			$contents = '';
			while (!feof($fd)) {
				$contents .= fread($fd, 8192);
			}
			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: */

?>
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