<?php

/**
* Smarty Internal Plugin Resource Stream
*
* Implements the streams as resource for Smarty template
*
* @package Smarty
* @subpackage TemplateResources
* @author Uwe Tews
*/

/**
* Smarty Internal Plugin Resource Stream
*/
class Smarty_Internal_Resource_Stream {
    public function __construct($smarty)
    {
        $this->smarty = $smarty;
    }
    // classes used for compiling Smarty templates from file resource
    public $compiler_class = 'Smarty_Internal_SmartyTemplateCompiler';
    public $template_lexer_class = 'Smarty_Internal_Templatelexer';
    public $template_parser_class = 'Smarty_Internal_Templateparser';
    // properties
    public $usesCompiler = true;
    public $isEvaluated = true;

    /**
    * Return flag if template source is existing
    *
    * @return boolean true
    */
    public function isExisting($template)
    {
        if ($template->getTemplateSource() == '') {
            return false;
        } else {
            return true;
        }
    }
    /**
    * Get filepath to template source
    *
    * @param object $_template template object
    * @return string return 'string' as template source is not a file
    */
    public function getTemplateFilepath($_template)
    {
        // no filepath for strings
        // return resource name for compiler error messages
        return str_replace(':', '://', $_template->template_resource);
    }

    /**
    * Get timestamp to template source
    *
    * @param object $_template template object
    * @return boolean false as string resources have no timestamp
    */
    public function getTemplateTimestamp($_template)
    {
        // strings must always be compiled and have no timestamp
        return false;
    }

    /**
    * Retuen template source from resource name
    *
    * @param object $_template template object
    * @return string content of template source
    */
    public function getTemplateSource($_template)
    {
        // return template string
        $_template->template_source = '';
        if ($fp = fopen(str_replace(':', '://', $_template->template_resource),'r+')) {
            while (!feof($fp) && ($current_line = fgets($fp)) !== false ) {
                $_template->template_source .= $current_line;
            }
            fclose($fp);
            return true;
        } else {
            return false;
        }
    }

    /**
    * Get filepath to compiled template
    *
    * @param object $_template template object
    * @return boolean return false as compiled template is not stored
    */
    public function getCompiledFilepath($_template)
    {
        // no filepath for strings
        return false;
    }
}

?>