class MY_Lang extends CI_Lang {
/**************************************************
configuration
***************************************************/
// languages
var $languages = array(
'en' => 'english',
'fr' => 'french'
'ar' => 'arabic'
);
// special URIs (not localized)
var $special = array (
""
);
// where to redirect if no language in URI
var $default_uri = '';
/**************************************************/
function __construct()
{
parent::__construct();
global $CFG;
global $URI;
global $RTR;
$segment = $URI->segment(1);
if (isset($this->languages[$segment])) // URI with language -> ok
{
$language = $this->languages[$segment];
$CFG->set_item('language', $language);
}
else if($this->is_special($segment)) // special URI -> no redirect
{
return;
}
else
{
$CFG->set_item('language', $this->languages[$this->default_lang()]);
header("Location: " . $CFG->site_url($this->localized($this->default_uri)), TRUE, 302);
exit;
}
}
// get current language
// ex: return 'en' if language in CI config is 'english'
function lang()
{
global $CFG;
$language = $CFG->item('language');
$lang = array_search($language, $this->languages);
if ($lang)
{
return $lang;
}
return NULL; // this should not happen
}
function is_special($uri)
{
$exploded = explode('/', $uri);
if (in_array($exploded[0], $this->special))
{
return TRUE;
}
if(isset($this->languages[$uri]))
{
return TRUE;
}
return FALSE;
}
function switch_uri($lang)
{
$CI =& get_instance();
$uri = $CI->uri->uri_string();
if ($uri != "")
{
$exploded = explode('/', $uri);
if($exploded[0] == $this->lang())
{
$exploded[0] = $lang;
}
$uri = implode('/',$exploded);
}
return $uri;
}
// is there a language segment in this $uri?
function has_language($uri)
{
$first_segment = NULL;
$exploded = explode('/', $uri);
if(isset($exploded[0]))
{
if($exploded[0] != '')
{
$first_segment = $exploded[0];
}
else if(isset($exploded[1]) && $exploded[1] != '')
{
$first_segment = $exploded[1];
}
}
if($first_segment != NULL)
{
return isset($this->languages[$first_segment]);
}
return FALSE;
}
// default language: first element of $this->languages
function default_lang()
{
foreach ($this->languages as $lang => $language)
{
return $lang;
}
}
// add language segment to $uri (if appropriate)
function localized($uri)
{
if($this->has_language($uri)
|| $this->is_special($uri)
|| preg_match('/(.+)\.[a-zA-Z0-9]{2,4}$/', $uri))
{
// we don't need a language segment because:
// - there's already one or
// - it's a special uri (set in $special) or
// - that's a link to a file
}
else
{
$uri = $this->lang() . '/' . $uri;
}
return $uri;
}
}