<?php

/**

 * Smarty Internal Plugin Resource Eval

 *

 * @package    Smarty

 * @subpackage TemplateResources

 * @author     Uwe Tews

 * @author     Rodney Rehm

 */

/**

 * Smarty Internal Plugin Resource Eval

 * Implements the strings as resource for Smarty template

 * {@internal unlike string-resources the compiled state of eval-resources is NOT saved for subsequent access}}

 *

 * @package    Smarty

 * @subpackage TemplateResources

 */

class Smarty_Internal_Resource_Eval extends Smarty_Resource_Recompiled {

    /**

     * populate Source Object with meta data from Resource

     *

     * @param  Smarty_Template_Source $source source object

     * @param  Smarty_Internal_Template $_template template object

     *

     * @return void

     */

    public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template = null) {

        $source->uid = $source->filepath = sha1($source->name);

        $source->timestamp = false;

        $source->exists = true;

    }

    /**

     * Load template's source from $resource_name into current template object

     *

     * @uses decode() to decode base64 and urlencoded template_resources

     *

     * @param  Smarty_Template_Source $source source object

     *

     * @return string                 template source

     */

    public function getContent(Smarty_Template_Source $source) {

        return $this->decode($source->name);

    }

    /**

     * decode base64 and urlencode

     *

     * @param  string $string template_resource to decode

     *

     * @return string decoded template_resource

     */

    protected function decode($string) {

        // decode if specified

        if (($pos = strpos($string, ':')) !== false) {

            if (!strncmp($string, 'base64', 6)) {

                return base64_decode(substr($string, 7));

            } elseif (!strncmp($string, 'urlencode', 9)) {

                return urldecode(substr($string, 10));

            }

        }

        return $string;

    }

    /**

     * modify resource_name according to resource handlers specifications

     *

     * @param  Smarty $smarty Smarty instance

     * @param  string $resource_name resource_name to make unique

     * @param  boolean $isConfig flag for config resource

     *

     * @return string unique resource name

     */

    public function buildUniqueResourceName(Smarty $smarty, $resource_name, $isConfig = false) {

        return get_class($this) . '#' . $this->decode($resource_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) {

        return '';

    }

}