<?php
/**
 * @version		$Id: language.php 14401 2010-01-26 14:10:00Z Zaharia $
 * @package		Invoice.Framework
 * @subpackage	LANGUAGE
 * @copyright	Copyright (C) 2010 - 2011 Development for Future. All rights reserved.
 * @license		GNU/GPL, see LICENSE.php
 * Acron Invoice! is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 * See COPYRIGHT.php for copyright notices and details.
 */

class inv_Lang
{
    /**
	 * Debug language, If true, highlights if string isn't found
	 *
	 * @var		boolean
	 * @access	protected
	 * @since	1.5
	 */
	var $_debug = false;

	/**
	 * The default language
	 *
	 * The default language is used when a language file in the requested language does not exist.
	 *
	 * @var		string
	 * @access	protected
	 * @since	1.5
	 */
	var $_default	= 'en-GB';

    function __construct(){

        $default_lang = inv_Lang::detect_lang();

        if( file_exists(APATH_LANGUAGE.DS."$default_lang.php")){
            require APATH_LANGUAGE.DS."$default_lang.php";
            }
            else{
                require APATH_LANGUAGE.DS.$this->_default.".php";
                }
            }

	/**
	* Gets the string from the array
	*
	* @param string $array_index
	* @param string $message
	* @return string
	* @access private
	*/
	function _get( $array_index, $message ) {
		if( is_array( $message )) {
		  return @$GLOBALS[$array_index][key($message)][current($message)];
          }
          return isset($GLOBALS[$array_index][$message]) ? $GLOBALS[$array_index][$message] : $message;
          }

	function detect_lang() {
	   //$default = 'romanian';

		if( empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) return $this->_default;

		$_AL = strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE']);
		$_UA = strtolower($_SERVER['HTTP_USER_AGENT']);

		// Try to detect Primary language if several languages are accepted',
		foreach($GLOBALS['_LANG'] as $K => $lang) {
          if( strpos($_AL, $K) === 0 )
              return file_exists( APATH_LANGUAGE.DS.$lang.'.php' ) ? $lang : $this->_default;
          }

		// Try to detect any language if not yet detected',
		foreach($GLOBALS['_LANG'] as $K => $lang) {
		  if( strpos( $_AL, $K )!== false )
          return file_exists( APATH_LANGUAGE.DS.$lang.'.php' ) ? $lang : $this->_default;
          }
		foreach($GLOBALS['_LANG'] as $K => $lang) {
		  if(preg_match("/[\[\( ]{$K}[;,_\-\)]/",$_UA))
          return file_exists( APATH_LANGUAGE.DS.$lang.'.php' ) ? $lang : $this->_default;
          }

		// Return default language if language is not yet detected',
		return $this->_default;
	}
}

// Define all available languages',
// WARNING: uncomment all available languages

$GLOBALS['_LANG'] = array(
'af' => 'afrikaans',
'ar' => 'arabic',
'bg' => 'bulgarian',
'ca' => 'catalan',
'cs' => 'czech',
'da' => 'danish',
'de' => 'german',
'el' => 'greek',
'en' => 'english',
'es' => 'spanish',
'et' => 'estonian',
'fi' => 'finnish',
'fr' => 'french',
'gl' => 'galician',
'he' => 'hebrew',
'hi' => 'hindi',
'hr' => 'croatian',
'hu' => 'hungarian',
'id' => 'indonesian',
'it' => 'italian',
'ja' => 'japanese',
'ko' => 'korean',
'ka' => 'georgian',
'lt' => 'lithuanian',
'lv' => 'latvian',
'ms' => 'malay',
'nl' => 'dutch',
'no' => 'norwegian',
'pl' => 'polish',
'pt' => 'portuguese',
'ro' => 'romanian',
'ru' => 'russian',
'sk' => 'slovak',
'sl' => 'slovenian',
'sq' => 'albanian',
'sr' => 'serbian',
'sv' => 'swedish',
'th' => 'thai',
'tr' => 'turkish',
'uk' => 'ukrainian',
'zh-tw' => 'traditional_chinese',
'zh-cn' => 'simplified_chinese'
);

?>