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<?php
declare(strict_types=1);
/*
Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
Copyright (c) 2009 Danilo Segan <danilo@kvota.net>
Copyright (c) 2016 Michal Čihař <michal@cihar.com>
This file is part of MoTranslator.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
namespace PhpMyAdmin\MoTranslator;
use PhpMyAdmin\MoTranslator\Cache\CacheFactoryInterface;
use PhpMyAdmin\MoTranslator\Cache\InMemoryCache;
use function array_push;
use function file_exists;
use function getenv;
use function in_array;
use function preg_match;
use function sprintf;
class Loader
{
/**
* Loader instance.
*
* @static
* @var Loader
*/
private static $instance = null;
/**
* Factory to return a factory responsible for returning a `CacheInterface`
*
* @static
* @var CacheFactoryInterface|null
*/
private static $cacheFactory = null;
/**
* Default gettext domain to use.
*
* @var string
*/
private $defaultDomain = '';
/**
* Configured locale.
*
* @var string
*/
private $locale = '';
/**
* Loaded domains.
*
* @var array<string,array<string,Translator>>
*/
private $domains = [];
/**
* Bound paths for domains.
*
* @var array<string,string>
*/
private $paths = ['' => './'];
/**
* Returns the singleton Loader object.
*
* @return Loader object
*/
public static function getInstance(): Loader
{
if (self::$instance === null) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Loads global localization functions.
*/
public static function loadFunctions(): void
{
require_once __DIR__ . '/functions.php';
}
/**
* Figure out all possible locale names and start with the most
* specific ones. I.e. for sr_CS.UTF-8@latin, look through all of
* sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr.
*
* @param string $locale Locale code
*
* @return string[] list of locales to try for any POSIX-style locale specification
*/
public static function listLocales(string $locale): array
{
$localeNames = [];
if ($locale) {
if (
preg_match(
'/^(?P<lang>[a-z]{2,3})' // language code
. '(?:_(?P<country>[A-Z]{2}))?' // country code
. '(?:\\.(?P<charset>[-A-Za-z0-9_]+))?' // charset
. '(?:@(?P<modifier>[-A-Za-z0-9_]+))?$/', // @ modifier
$locale,
$matches
)
) {
$lang = $matches['lang'] ?? null;
$country = $matches['country'] ?? null;
$charset = $matches['charset'] ?? null;
$modifier = $matches['modifier'] ?? null;
if ($modifier) {
if ($country) {
if ($charset) {
array_push(
$localeNames,
sprintf('%s_%s.%s@%s', $lang, $country, $charset, $modifier)
);
}
array_push(
$localeNames,
sprintf('%s_%s@%s', $lang, $country, $modifier)
);
} elseif ($charset) {
array_push(
$localeNames,
sprintf('%s.%s@%s', $lang, $charset, $modifier)
);
}
array_push(
$localeNames,
sprintf('%s@%s', $lang, $modifier)
);
}
if ($country) {
if ($charset) {
array_push(
$localeNames,
sprintf('%s_%s.%s', $lang, $country, $charset)
);
}
array_push(
$localeNames,
sprintf('%s_%s', $lang, $country)
);
} elseif ($charset) {
array_push(
$localeNames,
sprintf('%s.%s', $lang, $charset)
);
}
array_push($localeNames, $lang);
}
// If the locale name doesn't match POSIX style, just include it as-is.
if (! in_array($locale, $localeNames)) {
array_push($localeNames, $locale);
}
}
return $localeNames;
}
/**
* Sets factory responsible for composing a `CacheInterface`
*/
public static function setCacheFactory(?CacheFactoryInterface $cacheFactory): void
{
self::$cacheFactory = $cacheFactory;
}
/**
* Returns Translator object for domain or for default domain.
*
* @param string $domain Translation domain
*/
public function getTranslator(string $domain = ''): Translator
{
if (empty($domain)) {
$domain = $this->defaultDomain;
}
if (! isset($this->domains[$this->locale])) {
$this->domains[$this->locale] = [];
}
if (! isset($this->domains[$this->locale][$domain])) {
if (isset($this->paths[$domain])) {
$base = $this->paths[$domain];
} else {
$base = './';
}
$localeNames = $this->listLocales($this->locale);
$filename = '';
foreach ($localeNames as $locale) {
$filename = $base . '/' . $locale . '/LC_MESSAGES/' . $domain . '.mo';
if (file_exists($filename)) {
break;
}
}
// We don't care about invalid path, we will get fallback
// translator here
$moParser = new MoParser($filename);
if (self::$cacheFactory instanceof CacheFactoryInterface) {
$cache = self::$cacheFactory->getInstance($moParser, $this->locale, $domain);
} else {
$cache = new InMemoryCache($moParser);
}
$this->domains[$this->locale][$domain] = new Translator($cache);
}
return $this->domains[$this->locale][$domain];
}
/**
* Sets the path for a domain.
*
* @param string $domain Domain name
* @param string $path Path where to find locales
*/
public function bindtextdomain(string $domain, string $path): void
{
$this->paths[$domain] = $path;
}
/**
* Sets the default domain.
*
* @param string $domain Domain name
*/
public function textdomain(string $domain): void
{
$this->defaultDomain = $domain;
}
/**
* Sets a requested locale.
*
* @param string $locale Locale name
*
* @return string Set or current locale
*/
public function setlocale(string $locale): string
{
if (! empty($locale)) {
$this->locale = $locale;
}
return $this->locale;
}
/**
* Detects currently configured locale.
*
* It checks:
*
* - global lang variable
* - environment for LC_ALL, LC_MESSAGES and LANG
*
* @return string with locale name
*/
public function detectlocale(): string
{
if (isset($GLOBALS['lang'])) {
return $GLOBALS['lang'];
}
$locale = getenv('LC_ALL');
if ($locale !== false) {
return $locale;
}
$locale = getenv('LC_MESSAGES');
if ($locale !== false) {
return $locale;
}
$locale = getenv('LANG');
if ($locale !== false) {
return $locale;
}
return 'en';
}
}