<?php
/**
 * patTemplate-function inject configuration value
 *
 * $Id$
 *
 * @package Wombat
 * @subpackage patTemplate
 * @author gERD Schaufelberger <gerd@php-tools.net>
 */

WBClass::load('WBConfig');

/**
 * patTemplate-function inject configuration value
 *  
 * @version 0.2.0
 * @package Wombat
 * @subpackage patTemplate
 */
class patTemplate_Function_Config extends patTemplate_Function
{
    /**
     * Name of the function
     * @access protected
     * @var string
     */
    public $_name  =   'config';

    /**
     * tell that this function must not be executed during runtime
     * @var string
     */
    public $_type = PATTEMPLATE_FUNCTION_COMPILE;

    /**
     * Configuration Object
     * @var WBConfig
     */
    private $config;

    /**
     * Constructor
     *
     */
    public function __construct()
    {
        $this->config   =   WBClass::create('WBConfig');
    }

    /**
     * Call the function
     *
     * @param array $params parameters of the function (= attributes of the tag)
     * @param string $content inside tag
     * @return string content to insert into the template
     */
    public function call($params, $content)
    {
        if (empty($params['config'])) {
            $params['config']   =   'info';
        }
        if (empty($params['default'])) {
            $params['default']  =   '';
        }

        $this->config->load($params['config']);
        $value  =   $this->config->get($content, $params['default']);

        if (empty($value)) {
            return '';
        }
        if (is_scalar($value)) {
            return $value;
        }
        if (empty($params['format'])) {
            $params['format']   =   '%s';
        }
        if (empty($params['glue'])) {
            $params['glue']   =   "<br />\n";
        }
        $out    =   array();
        foreach ($value as $k => $v) {
            $out[]  =   sprintf($params['format'], $v);
        }

        return implode($params['glue'], $out);
    }    
}