<?PHP
/**
 * patConfiguration writer for WDDX files
 *
 * used by the patConfiguration object to write INI config files
 *
 * $Id: WDDX.php,v 1.1 2004/02/29 16:56:46 schst Exp $
 *	
 * @package		patConfiguration
 * @subpackage	Writer
 * @author		Stephan Schmidt <schst@php-tools.net>
 */

/**
 * patConfiguration writer for WDDX files
 *
 * used by the patConfiguration object to write INI config files
 *
 * $Id: WDDX.php,v 1.1 2004/02/29 16:56:46 schst Exp $
 *	
 * @package		patConfiguration
 * @subpackage	Writer
 * @author		Stephan Schmidt <schst@php-tools.net>
 */
class patConfiguration_Writer_WDDX extends patConfiguration_Writer
{
   /**
	* table used for translation of xml special chars
	* @var	array	$xmlSpecialchars
	*/
	var	$xmlSpecialchars	=	array(
										"&"		=>	"&amp;",
										"'"		=>	"&apos;",
										"\""	=>	"&quot;",
										"<"		=>	"&lt;",
										">"		=>	"&gt;"
									);
   /**
	* create an ini representation of the current config
	*
	* @access	private
	* @param	array	$config		config to serialize
	* @param	array	$options	options for the serialization
	* @return	string	$content	xml representation
	*/
	function	serializeConfig( $config, $options )
	{
		if( !function_exists( "wddx_add_vars" ) )
		{
			return patErrorManager::raiseError(
										PATCONFIGURATION_ERROR_DRIVER_NOT_WORKING,
										"WDDX extension is not installed on your system."
										 );
		}

		if( !isset( $options["comment"] ) )
			$options["comment"]	=	"Configuration generated by patConfiguration v".$this->configObj->systemVars["appVersion"].", (c) ". implode( ",", $this->configObj->systemVars["author"]);
		
		$options["comment"]		=	$this->replaceXMLSpecialchars( $options["comment"] );

		$packet_id	=	wddx_packet_start( $options["comment"] );

		foreach( $config as $key => $value )
		{
			$$key	=	$value;
			wddx_add_vars( $packet_id, $key );
		}
				
		$packet		=	wddx_packet_end( $packet_id );
		$config		=	"<?xml version=\"1.0\" encoding=\"{$this->configObj->encoding}\"?>".
						$packet;

		return	$config;
	}

   /**
	* replace XML special chars
	*
	* @param	string	$string		string, where special chars should be replaced
	* @param	array	$table		table used for replacing
	* @return	string	$string		string with replaced chars
	*/
	function	replaceXMLSpecialchars( $string, $table = array() )
	{
		if( empty( $table ) )
			$table	=	&$this->xmlSpecialchars;

		if( is_array( $string ) )
		{
			$string	=	array_map( array( $this, "replaceXMLSpecialchars" ), $string );
		}
		else
			$string		=	strtr( $string, $table );

		return	$string;
	}
}
?>