<?php

/**

* Copyright 2014 Openstack Foundation

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

**/

class UserLanguage {

static private function _parse_accept_language_header(){

$langs = array();

if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {

// break up string into pieces (languages and q factors)

preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);

if (count($lang_parse[1])) {

// create a list like "en" => 0.8

$langs = array_combine($lang_parse[1], $lang_parse[4]);

// set default to 1 for any without q factor

foreach ($langs as $lang => $val) {

if ($val === '') $langs[$lang] = 1;

}

// sort list based on value

arsort($langs, SORT_NUMERIC);

}

}

else// ??

$langs = array("en" => 1);

return $langs;

}

static function getCurrentUserLang(){

$accept_languages = self::_parse_accept_language_header();

reset($accept_languages);

$current_lang = key($accept_languages);

$current_lang = substr($current_lang, 0, 2);

$languages = 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'=>'Swedis',

'th'=>'Thai',

'tr'=>'Turkish',

'uk'=>'Ukrainian',

'zh' =>'Chinese',

);

if(is_string($current_lang) && array_key_exists($current_lang,$languages))

return $languages[$current_lang];

return 'English';

}

}