102 lines
2.7 KiB
PHP
102 lines
2.7 KiB
PHP
|
<?php
|
||
|
|
/*
|
||
|
|
* @package AJAX_Chat
|
||
|
|
* @author Sebastian Tschan
|
||
|
|
* @copyright (c) Sebastian Tschan
|
||
|
|
* @license GNU Affero General Public License
|
||
|
|
* @link https://blueimp.net/ajax/
|
||
|
|
*/
|
||
|
|
|
||
|
|
class AJAXChatLanguage {
|
||
|
|
|
||
|
|
var $_regExpAcceptLangCode;
|
||
|
|
var $_availableLangCodes;
|
||
|
|
var $_defaultLangCode;
|
||
|
|
var $_strictMode;
|
||
|
|
var $_langCode;
|
||
|
|
|
||
|
|
function __construct($availableLangCodes, $defaultLangCode, $langCode=null, $strictMode=false) {
|
||
|
|
$this->_regExpAcceptLangCode = '/^([a-z]{1,8}(?:-[a-z]{1,8})*)(?:;\s*q=(0(?:\.[0-9]{1,3})?|1(?:\.0{1,3})?))?$/i';
|
||
|
|
$this->_availableLangCodes = $availableLangCodes;
|
||
|
|
$this->_defaultLangCode = $defaultLangCode;
|
||
|
|
if($langCode && in_array($langCode, $availableLangCodes)) {
|
||
|
|
$this->_langCode = $langCode;
|
||
|
|
}
|
||
|
|
$this->_strictMode = $strictMode;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Method to detect the language code from the HTTP_ACCEPT_LANGUAGE header:
|
||
|
|
function detectLangCode() {
|
||
|
|
// If HTTP_ACCEPT_LANGUAGE is empty use defaultLangCode:
|
||
|
|
if(empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
|
||
|
|
$this->_langCode = $this->_defaultLangCode;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Split up the HTTP_ACCEPT_LANGUAGE header:
|
||
|
|
$acceptedLanguages = preg_split('/,\s*/', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
|
||
|
|
|
||
|
|
$currentLangCode = $this->_defaultLangCode;
|
||
|
|
$currentLangQuality = 0.0;
|
||
|
|
|
||
|
|
foreach($acceptedLanguages as $acceptedLanguage) {
|
||
|
|
// Parse the language string:
|
||
|
|
$match = preg_match($this->_regExpAcceptLangCode, $acceptedLanguage, $matches);
|
||
|
|
// Check if the syntax is valid:
|
||
|
|
if(!$match) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get and split the language code:
|
||
|
|
$langCodeParts = explode ('-', $matches[1]);
|
||
|
|
|
||
|
|
// Get the language quality given as float value:
|
||
|
|
if(isset($matches[2])) {
|
||
|
|
$langQuality = (float)$matches[2];
|
||
|
|
} else {
|
||
|
|
// Missing language quality value is maximum quality:
|
||
|
|
$langQuality = 1.0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Go through it until the language code is empty:
|
||
|
|
while(count($langCodeParts)) {
|
||
|
|
// Join the current langCodeParts:
|
||
|
|
$langCode = strtolower(join('-', $langCodeParts));
|
||
|
|
// Check if the langCode is in the available list:
|
||
|
|
if(in_array($langCode, $this->_availableLangCodes)) {
|
||
|
|
// Check the quality setting:
|
||
|
|
if ($langQuality > $currentLangQuality) {
|
||
|
|
$currentLangCode = $langCode;
|
||
|
|
$currentLangQuality = $langQuality;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// If strict mode is set, don't minimalize the language code:
|
||
|
|
if($this->_strictMode) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
// else chop off the right part:
|
||
|
|
array_pop($langCodeParts);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->_langCode = $currentLangCode;
|
||
|
|
}
|
||
|
|
|
||
|
|
function getLangCode() {
|
||
|
|
if(!$this->_langCode) {
|
||
|
|
$this->detectLangCode();
|
||
|
|
}
|
||
|
|
return $this->_langCode;
|
||
|
|
}
|
||
|
|
|
||
|
|
function setLangCode($langCode) {
|
||
|
|
$this->_langCode = $langCode;
|
||
|
|
}
|
||
|
|
|
||
|
|
function getLangCodes() {
|
||
|
|
return $this->_availableLangCodes;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
?>
|