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-rw-r--r--localeDetection.class.php114
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diff --git a/localeDetection.class.php b/localeDetection.class.php
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+<?php
+
+/* ChooseLocale
+ *
+ * Licence: MPL 2/GPL 2.0/LGPL 2.1
+ * Author: Pascal Chevrel, Mozilla
+ * Date : 2010-07-17
+ *
+ * Description:
+ * Class to choose the locale which locale we will show to the visitor
+ * based on http acceptlang headers and our list of supported locales.
+ *
+ *
+*/
+
+
+
+
+class ChooseLocale
+{
+ public $HTTPAcceptLang;
+ public $supportedLocales;
+ protected $detectedLocale;
+ protected $defaultLocale;
+ public $mapLonglocales;
+
+
+ public function __construct($list=array('en-US'))
+ {
+ $this -> HTTPAcceptLang = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
+ $this -> supportedLocales = array_unique($list);
+ $this -> setDefaultLocale('en-US');
+ $this -> setCompatibleLocale();
+ $this -> mapLonglocales = true;
+
+ }
+
+ public function getAcceptLangArray()
+ {
+ if (empty($this->HTTPAcceptLang)) return null;
+
+ return explode(',', $this->HTTPAcceptLang);
+ }
+
+ public function getCompatibleLocale()
+ {
+ $l = $this -> defaultLocale;
+ $acclang = $this -> getAcceptLangArray();
+
+ if(!is_array($acclang)) {
+ return $this -> defaultLocale;
+ }
+
+ foreach ($acclang as $var) {
+ $locale = $this -> _cleanHTTPlocaleCode($var);
+ $shortLocale = array_shift(explode('-', $locale));
+
+ if (in_array($locale, $this -> supportedLocales)) {
+ $l = $locale;
+ break;
+ }
+
+ if (in_array($shortLocale, $this -> supportedLocales)) {
+ $l = $shortLocale;
+ break;
+ }
+
+ // check if we map visitors short locales to site long locales
+ // like en -> en-GB
+ if ($this -> mapLonglocales == true) {
+ foreach ($this -> supportedLocales as $var) {
+ $shortSupportedLocale = array_shift(explode('-', $var));
+ if ($shortLocale == $shortSupportedLocale) {
+ $l = $var;
+ break;
+ }
+ }
+ }
+
+ }
+
+ return $l;
+ }
+
+ public function getDefaultLocale() {
+ return $this -> defaultLocale;
+ }
+
+ public function setCompatibleLocale() {
+ $this -> detectedLocale = $this -> getCompatibleLocale();
+ }
+
+ public function setDefaultLocale($locale) {
+
+ // the default locale should always be among the site locales
+ // if not, the first locale in the supportedLocales array is default
+ if (!in_array($locale, $this -> supportedLocales)) {
+ $this -> defaultLocale = $this -> supportedLocales[0];
+
+ } else {
+ $this -> defaultLocale = $locale;
+ }
+ return;
+ }
+
+ private function _cleanHTTPlocaleCode($str)
+ {
+ $locale = explode(';', $str);
+ $locale = trim($locale[0]);
+
+ return $locale;
+ }
+
+} \ No newline at end of file