<?php
/**
 * xoAppUrl Smarty compiler plug-in
 *
 * See the enclosed file LICENSE for licensing information.
 * If you did not receive this file, get it at http://www.fsf.org/copyleft/gpl.html
 *
 * @copyright   The XOOPS project http://www.xoops.org/
 * @license     http://www.fsf.org/copyleft/gpl.html GNU public license
 * @author		Skalpa Keo <skalpa@xoops.org>
 * @package		xos_opal
 * @subpackage	xos_opal_Smarty
 * @since       2.0.14
 * @version		$Id: compiler.xoAppUrl.php 694 2006-09-04 11:33:22Z skalpa $
 */

/**
 * Inserts the URL of an application page
 * 
 * This plug-in allows you to generate a module location URL. It uses any URL rewriting
 * mechanism and rules you'll have configured for the system.
 * 
 * To ensure this can be as optimized as possible, it accepts 2 modes of operation:
 * 
 * <b>Static address generation</b>:
 * This is the default mode and fastest mode. When used, the URL is generated during
 * the template compilation, and statically written in the compiled template file.
 * To use it, you just need to provide a location in a format XOOPS understands.
 * 
 * <code>
 * // Generate an URL using a physical path
 * ([xoAppUrl modules/something/yourpage.php])
 * // Generate an URL using a module+location identifier (2.3+)
 * ([xoAppUrl mod_xoops_Identification#logout])
 * </code>
 * 
 * <b>Dynamic address generation</b>:
 * The is the slowest mode, and its use should be prevented unless necessary. Here,
 * the URL is generated dynamically each time the template is displayed, thus allowing
 * you to use the value of a template variable in the location string. To use it, you
 * must surround your location with double-quotes ("), and use the
 * {@link http://smarty.php.net/manual/en/language.syntax.quotes.php Smarty quoted strings}
 * syntax to insert variables values.
 * 
 * <code>
 * // Use the value of the $sortby template variable in the URL
 * ([xoAppUrl "modules/something/yourpage.php?order=`$sortby`"])
 * </code>
 */
function smarty_compiler_xoAppUrl( $argStr, &$compiler ) {
	global $xoops;
	$argStr = trim( $argStr );
	
	@list( $url, $params ) = explode( ' ', $argStr, 2 );
	
	if ( substr( $url, 0, 1 ) == '/' ) {
		$url = 'www' . $url;
	}
	// Static URL generation
	if ( strpos( $argStr, '$' ) === false && $url != '.' ) {
		if ( isset($params) ) {
			$params = $compiler->_parse_attrs( $params, false );
			foreach ( $params as $k => $v ) {
				if ( in_array( substr( $v, 0, 1 ), array( '"', "'" ) ) ) {
					$params[$k] = substr( $v, 1, -1 );
				}
			}
			$url = $xoops->buildUrl( $url, $params );
		}
		$url = $xoops->path( $url, true );
		return "echo '" . addslashes( htmlspecialchars( $url ) ) . "';";
	}
	// Dynamic URL generation
	if ( $url == '.' ) {
		$str = "\$_SERVER['REQUEST_URI']";
	} else {
		$str = "\$GLOBALS['xoops']->path( '$url', true )";
	}
	if ( isset($params) ) {
		$params = $compiler->_parse_attrs( $params, false );
		$str = "\$GLOBALS['xoops']->buildUrl( $str, array(\n";
		foreach ( $params as $k => $v ) {
			$str .= var_export( $k, true ) . " => $v,\n";
		}
		$str .= ") )";		
	}
	return "echo htmlspecialchars( $str );";
}

?>