<?php
/**
 * Smarty Internal Plugin Resource File
 *
 * @package Smarty
 * @subpackage TemplateResources
 * @author Uwe Tews
 * @author Rodney Rehm
 */

/**
 * Smarty Internal Plugin Resource File
 *
 * Implements the file system as resource for Smarty templates
 *
 * @package Smarty
 * @subpackage TemplateResources
 */
class Smarty_Internal_Resource_File extends Smarty_Resource {

	/**
	 * populate Source Object with meta data from Resource
	 *
	 * @param Smarty_Template_Source   $source    source object
	 * @param Smarty_Internal_Template $_template template object
	 */
	public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template=null)
	{
		$source->filepath = $this->buildFilepath($source, $_template);

		if ($source->filepath !== false) {
			if (is_object($source->smarty->security_policy)) {
				$source->smarty->security_policy->isTrustedResourceDir($source->filepath);
			}

			$source->uid = sha1($source->filepath);
			if ($source->smarty->compile_check && !isset($source->timestamp)) {
				$source->timestamp = @filemtime($source->filepath);
				$source->exists = !!$source->timestamp;
			}
		}
	}

	/**
	 * populate Source Object with timestamp and exists from Resource
	 *
	 * @param Smarty_Template_Source $source source object
	 */
	public function populateTimestamp(Smarty_Template_Source $source)
	{
		$source->timestamp = @filemtime($source->filepath);
		$source->exists = !!$source->timestamp;
	}

	/**
	 * Load template's source from file into current template object
	 *
	 * @param Smarty_Template_Source $source source object
	 * @return string template source
	 * @throws SmartyException if source cannot be loaded
	 */
	public function getContent(Smarty_Template_Source $source)
	{
		if ($source->timestamp) {
			return file_get_contents($source->filepath);
		}
		if ($source instanceof Smarty_Config_Source) {
			throw new SmartyException("Unable to read config {$source->type} '{$source->name}'");
		}
		throw new SmartyException("Unable to read template {$source->type} '{$source->name}'");
	}

	/**
	 * Determine basename for compiled filename
	 *
	 * @param Smarty_Template_Source $source source object
	 * @return string resource's basename
	 */
	public function getBasename(Smarty_Template_Source $source)
	{
		$_file = $source->name;
		if (($_pos = strpos($_file, ']')) !== false) {
			$_file = substr($_file, $_pos + 1);
		}
		return basename($_file);
	}

}

?>