Oinktube/locale/function.php

<?php
if (empty($config)) {
    return true;
}

// filter some security here
if (!empty($_GET['lang'])) {
    $_GET['lang'] = str_replace(array("'", '"', "&quot;", "&#039;"), array('', '', '', ''), xss_esc($_GET['lang']));
}

if (!empty($_GET['lang'])) {
    $_GET['lang'] = strip_tags($_GET['lang']);
    $_SESSION['language'] = $_GET['lang'];
}
@include_once "{$global['systemRootPath']}locale/{$_SESSION['language']}.php";

function __($str, $allowHTML = false) {
    global $t;

    if (!isset($t_insensitive)) {
        $t_insensitive = array_change_key_case($t);
    }

    $return = $str;

    if (!empty($t[$str])) {
        $return = $t[$str];
    } else if (!empty($t_insensitive[strtolower($str)])) {
        $return = $t_insensitive[strtolower($str)];
    }

    if ($allowHTML) {
        return $return;
    }
    return str_replace(array("'", '"', "<", '>'), array('&apos;', '&quot;', '&lt;', '&gt;'), $return);
}

function isRTL() {
    global $t_isRTL;
    return !empty($t_isRTL) && $t_isRTL;
}

function getAllFlags() {
    global $global;
    $dir = "{$global['systemRootPath']}view/css/flag-icon-css-master/flags/4x3";
    $flags = array();
    if ($handle = opendir($dir)) {
        while (false !== ($entry = readdir($handle))) {
            if ($entry != "." && $entry != "..") {
                $flags[] = str_replace(".svg", "", $entry);
            }
        }
        closedir($handle);
    }
    sort($flags);
    return $flags;
}

/**
 * Deprecated replaced by Layout::getAvilableFlags()
 * @global type $global
 * @return type
 */
function getEnabledLangs() {
    global $global;
    $dir = "{$global['systemRootPath']}locale";
    $flags = array();
    if (empty($global['dont_show_us_flag'])) {
        $flags[] = 'us';
    }
    if ($handle = opendir($dir)) {
        while (false !== ($entry = readdir($handle))) {
            if ($entry != '.' && $entry != '..' && $entry != 'index.php' && $entry != 'function.php' && $entry != 'save.php') {
                $flags[] = str_replace('.php', '', $entry);
            }
        }
        closedir($handle);
    }
    sort($flags);
    return $flags;
}

function textToLink($string, $targetBlank = false) {
    $target = "";
    if ($targetBlank) {
        $target = "target=\"_blank\"";
    }
    return preg_replace('$(\s|^)(https?://[a-z0-9_./?=&-]+)(?![^<>]*>)$i', ' <a href="$2" '.$target.'>$2</a> ', $string);
}

function br2nl($html) {
    $nl = preg_replace(array('#<br\s*/?>#i', '#<p\s*/?>#i', '#</p\s*>#i'), array("\n", "\n", ''), $html);
    return $nl;
}

function flag2Lang($flagCode){
    global $global;
    $index = strtolower($flagCode);
    if(!empty($global['flag2Lang'][$index])){
        return $global['flag2Lang'][$index];
    }
    return $flagCode;
}

function setSiteLang() {
    global $config;
    
    $userLocation = false;
    $obj = AVideoPlugin::getDataObjectIfEnabled('User_Location');
    $userLocation = !empty($obj) && !empty($obj->autoChangeLanguage);
    
    if (!empty($_GET['lang'])) {
        _session_start();
        $_SESSION['language'] = $_GET['lang'];
    } else if (empty($_SESSION['language']) && !$userLocation) {
        _session_start();
        $_SESSION['language'] = $config->getLanguage();
    }
    return setLanguage($_SESSION['language']);
}

function setLanguage($lang) {
        if (empty($lang)) {
            return false;
        }
        global $global;
        $lang = flag2Lang($lang);
        if (empty($lang) || $lang === '-') {
            return false;
        }

        $file = "{$global['systemRootPath']}locale/{$lang}.php";
        _session_start();
        if (file_exists($file)) {
            $_SESSION['language'] = $lang;
            include_once $file;
            return true;
        } else {
            //_error_log('setLanguage: File does not exists 1 ' . $file);
            $lang = strtolower($lang);
            $file = "{$global['systemRootPath']}locale/{$lang}.php";
            if (file_exists($file)) {
                $_SESSION['language'] = $lang;
                include_once $file;
                return true;
            } else {
                //_error_log('setLanguage: File does not exists 2 ' . $file);
            }
        }
        return false;
    }