vesta/web/inc/i18n.php

129 lines
3.6 KiB
PHP

<?php
// Functions for internationalization
/**
* Translates string to given language in first parameter, key given in second parameter (dynamically loads required language). Works like spritf from second parameter
* @global array $LANG Associative array of language pharses
* @return string Translated string
*/
function _translate() {
global $LANG;
$args = func_get_args();
$l = $args[0];
if (empty($l)) return 'NO LANGUAGE DEFINED';
$key = $args[1];
if (empty($key)) return '';
// No translation needed
if (!preg_match('/[a-z]/i', $key)) {
return $key;
}
// Load language file (if not loaded yet)
if (!isset($LANG[$l])) {
require_once($_SERVER['DOCUMENT_ROOT']."/inc/i18n/".basename($l).".php");
}
//if (!isset($LANG[$l][$key])) file_put_contents('/somewhere/something.log', "$key\n", FILE_APPEND);
$text = isset($LANG[$l][$key]) ? $LANG[$l][$key] : $key;
array_shift($args);
if (count($args) > 1) {
$args[0] = $text;
return call_user_func_array('sprintf', $args);
} else {
return $text;
}
}
/**
* Translates string by a given key in first parameter to current session language. Works like sprintf
* @global array $LANG Associative array of language pharses
* @return string Translated string
* @see _translate()
*/
function __() {
$args = func_get_args();
array_unshift($args, $_SESSION['language']);
return call_user_func_array('_translate', $args);
}
/**
* Detects user language from Accept-Language HTTP header.
* @param string Fallback language (default: 'en')
* @return string Language code (such as 'en' and 'ja')
*/
function detect_user_language($fallback='en') {
static $user_lang = '';
// Already detected
if (!empty($user_lang)) return $user_lang;
// Check if Accept-Language header is available
if (!isset($_SERVER) ||
!isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ||
!is_string($_SERVER['HTTP_ACCEPT_LANGUAGE'])
) {
// Store result for reusing
$user_lang = $fallback;
return $user_lang;
}
// Sort Accept-Language by `q` value
$accept_langs = explode(',', preg_replace('/\s/', '', strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE'])));
$accept_langs_sorted = array() ;
foreach ($accept_langs as $lang) {
$div = explode(';q=', $lang, 2);
if (count($div) < 2) {
// `q` value was not specfied
// -> Set default `q` value (1)
$div[] = '1';
}
list($code, $q) = $div;
if (preg_match('/^[\w\-]+$/', $code)) {
// Acceptable language code
$accept_langs_sorted[$code] = (double)$q;
}
}
arsort($accept_langs_sorted);
// List languages
exec (VESTA_CMD."v-list-sys-languages json", $output, $return_var);
$languages = json_decode(implode('', $output), true);
unset($output);
// Find best matching language
foreach ($accept_langs_sorted as $user_lang => $dummy) {
$decision = '';
foreach ($languages as $prov_lang) {
if (strlen($decision) > strlen($prov_lang)) continue;
if (strpos($user_lang, $prov_lang) !== false) {
$decision = $prov_lang;
}
}
if (!empty($decision)) {
// Store result for reusing
$user_lang = $decision;
return $user_lang;
}
}
// Store result for reusing
$user_lang = $fallback;
return $user_lang;
}
/**
* Detects user language .
* @param string Fallback language (default: 'en')
* @return string Language code (such as 'en' and 'ja')
*/
function detect_login_language(){
}