Add auto language detection
This commit is contained in:
Eike Foken
@@ -321,5 +321,5 @@ class Access {
|
||||
|
||||
}
|
||||
|
||||
/* End of file access.php */
|
||||
/* Location: ./application/libraries/access.php */
|
||||
/* End of file Access.php */
|
||||
/* Location: ./application/libraries/Access.php */
|
||||
|
||||
165
application/libraries/Lang_detect.php
Normal file
165
application/libraries/Lang_detect.php
Normal file
@@ -0,0 +1,165 @@
|
||||
<?php defined('BASEPATH') || exit("No direct script access allowed");
|
||||
|
||||
class Lang_detect {
|
||||
|
||||
protected $CI;
|
||||
|
||||
// make config item available locally
|
||||
public $languages = array();
|
||||
|
||||
// the user's language (directory name)
|
||||
public $lang_dir = '';
|
||||
|
||||
/**
|
||||
* Constructor.
|
||||
*/
|
||||
public function __construct() {
|
||||
$this->CI =& get_instance();
|
||||
$this->CI->load->config('lang_detect');
|
||||
$this->CI->load->helper('cookie');
|
||||
|
||||
// get list of supported languages
|
||||
$this->languages = $this->CI->config->item('lang_available');
|
||||
if (empty($this->lang_dir)) {
|
||||
// language directory not yet set: detect the user's language
|
||||
$this->lang_dir = $this->detectLanguage();
|
||||
}
|
||||
|
||||
log_message('debug', "Lang_detect Class Initialized");
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine a user's language.
|
||||
*
|
||||
* Use either the URI segment's or the cookie's language code or determine
|
||||
* the best match of the browser's languages with the available languages.
|
||||
* If no match s found, the configured default language is taken.
|
||||
*
|
||||
* @return string Language directory name, e.g. 'english'
|
||||
*/
|
||||
public function detectLanguage() {
|
||||
$language = false;
|
||||
|
||||
// obtain language code from URI segment if available
|
||||
$langURI = $this->uriLanguageDetect();
|
||||
if ($langURI !== false) {
|
||||
// check the URI's language code
|
||||
$language = $this->checkLanguage($langURI);
|
||||
if ($language !== false) {
|
||||
$lang = $langURI;
|
||||
}
|
||||
}
|
||||
|
||||
// if a language cookie available get its sanitized info
|
||||
$langCookie = get_cookie($this->CI->config->item('lang_cookie_name'));
|
||||
if ($langCookie !== false) {
|
||||
if (($language !== false) && ($langURI !== $langCookie)) {
|
||||
// URI has valid language but cookie has wrong language: update cookie
|
||||
$this->setLanguageCookie($langURI);
|
||||
}
|
||||
if ($language === false) {
|
||||
// invalid or no URI language code: check the cookie's language
|
||||
$language = $this->checkLanguage($langCookie);
|
||||
if ($language !== false) {
|
||||
$lang = $langCookie;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ($language === false) {
|
||||
// no cookie/URI language code: check browser's languages
|
||||
$accept_langs = $this->CI->input->server('HTTP_ACCEPT_LANGUAGE');
|
||||
if ($accept_langs !== false) {
|
||||
// explode languages into array
|
||||
$accept_langs = strtolower($accept_langs);
|
||||
$accept_langs = explode(",", $accept_langs);
|
||||
|
||||
// check all of them
|
||||
foreach ($accept_langs as $lang) {
|
||||
// remove all after ';'
|
||||
$pos = strpos($lang, ';');
|
||||
if ($pos !== false) {
|
||||
$lang = substr($lang, 0, $pos);
|
||||
}
|
||||
// get CI language directory
|
||||
$language = $this->checkLanguage($lang);
|
||||
// finish search if we support that language
|
||||
if ($language !== false) {
|
||||
// set cookie
|
||||
$this->setLanguageCookie($lang);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ($language === false) {
|
||||
// no base language available or no browser language match: use default
|
||||
$lang = $this->CI->config->item('lang_default');
|
||||
$language = $this->languages[$lang];
|
||||
// set cookie
|
||||
$this->setLanguageCookie($lang);
|
||||
}
|
||||
|
||||
// set the configuration for the CI_Language class
|
||||
$this->CI->config->set_item('language', $language);
|
||||
// store the language code too
|
||||
$this->CI->config->set_item('lang_selected', $lang);
|
||||
return $language;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the language cookie.
|
||||
*
|
||||
* @param string $lang The language code, e.g. en
|
||||
*/
|
||||
private function setLanguageCookie($lang) {
|
||||
set_cookie($this->CI->config->item('lang_cookie_name'), $lang,
|
||||
$this->CI->config->item('lang_expiration'));
|
||||
}
|
||||
|
||||
/**
|
||||
* Fetches the language code from URI segment if available.
|
||||
*
|
||||
* @return mixed The language code, or FALSE if not found.
|
||||
*/
|
||||
private function uriLanguageDetect() {
|
||||
// search the language code in the uri segments
|
||||
for ($i = $this->CI->uri->total_segments(); $i > 0; $i--) {
|
||||
$segment = $this->CI->uri->segment($i);
|
||||
// the uri segment with the language code has the prefix 'l_'
|
||||
if (!empty($segment) && (strpos($segment, 'l_') === 0)) {
|
||||
// extract the language code
|
||||
return substr($segment, 2);
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Determines the language directory.
|
||||
*
|
||||
* @param string $lang The language code, e.g. en_uk
|
||||
* @return string The language directory, or FALSE if not found.
|
||||
*/
|
||||
private function checkLanguage(&$lang) {
|
||||
if (!array_key_exists($lang, $this->languages)) {
|
||||
if (strlen($lang) == 2) {
|
||||
// we had already the base language: not found so give up
|
||||
return false;
|
||||
} else {
|
||||
// try base language
|
||||
$lang = substr($lang, 0, 2);
|
||||
if (!array_key_exists($lang, $this->languages)) {
|
||||
// calculated base language also not found: give up
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
// return CI language directory
|
||||
return $this->languages[$lang];
|
||||
}
|
||||
}
|
||||
|
||||
/* End of file Lang_detect.php */
|
||||
/* Location: ./application/libraries/Lang_detect.php */
|
||||
Reference in New Issue
Block a user