function form_change_post($dta) {
$lang = $dta['lang'];
if (preg_match('/^[a-z]{2}\-[a-z]{2}$|^[a-z]{2}$|^\_D\_$/',$lang)==0) {
WGSetActivity('main');
return;
}
if (!WGSetLang($lang)) {
WGSetActivity('main');
return;
}
WGCloseWin();
WGShellExecute("/bin/app/webgui/lang.app");
}
function WGDetectLang($forceReload) {
global $ini;
if (
!$forceReload and
isset($_SESSION['WGLang']) and
$_SESSION['WGLang']!='' and
$_SESSION['WGLang']!='_D_'
) return;
if (isset($ini['webgui']['lang'])) {
$defLang = strtolower(trim($ini['webgui']['lang'],' '));
if (!preg_match('/^[a-z]{2}\-[a-z]{2}$|^[a-z]{2}$/',$defLang)==0) $defLang='en';
} else $defLang='en';
$t0 = @$_SERVER['HTTP_ACCEPT_LANGUAGE'];
$curLang=false;
if ($t0!='') {
$t0=explode(',',$t0);
$langList=array();
foreach($t0 as $t1) {
$t1=trim($t1,' ');
$t1=strtolower($t1);
list($t1)=explode(';',$t1,2);
if (preg_match('/^[a-z]{2}\-[a-z]{2}$/',$t1)!=0) $langList[] =$t1;
if (preg_match('/^[a-z]{2}$/',$t1)!=0) $langList[] =$t1;
}
foreach($langList as $t1) {
if ($defLang && $defLang==$t1) $t1='_D_';
if (!file_exists($_SERVER['DOCUMENT_ROOT'].'/etc/lang/'.$t1.'.json')) continue;
$curLang=$t1;
break;
}
}
if (isset($JSON['data']['lang']) and !$curLang) {
$t1=strtolower($JSON['data']['lang']);
if (preg_match('/^[a-z]{2}\-[a-z]{2}$|^[a-z]{2}$/',$t1)!=0) $curLang = $t1;
}
if ($curLang) WGSetLang($curLang);
}