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<?php
declare(strict_types=1);
/**
* This file is part of the Carbon package.
*
* (c) Brian Nesbitt <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Carbon;
use Carbon\MessageFormatter\MessageFormatterMapper;
use Closure;
use ReflectionException;
use ReflectionFunction;
use Symfony\Component\Translation;
use Symfony\Component\Translation\Formatter\MessageFormatterInterface;
use Symfony\Component\Translation\Loader\ArrayLoader;
abstract class AbstractTranslator extends Translation\Translator
{
public const REGION_CODE_LENGTH = 2;
/**
* Translator singletons for each language.
*
* @var array
*/
protected static array $singletons = [];
/**
* List of custom localized messages.
*
* @var array
*/
protected array $messages = [];
/**
* List of custom directories that contain translation files.
*
* @var string[]
*/
protected array $directories = [];
/**
* Set to true while constructing.
*/
protected bool $initializing = false;
/**
* List of locales aliases.
*
* @var array<string, string>
*/
protected array $aliases = [
'me' => 'sr_Latn_ME',
'scr' => 'sh',
];
/**
* Return a singleton instance of Translator.
*
* @param string|null $locale optional initial locale ("en" - english by default)
*
* @return static
*/
public static function get(?string $locale = null): static
{
$locale = $locale ?: 'en';
$key = static::class === Translator::class ? $locale : static::class.'|'.$locale;
$count = \count(static::$singletons);
// Remember only the last 10 translators created
if ($count > 10) {
foreach (\array_slice(array_keys(static::$singletons), 0, $count - 10) as $index) {
unset(static::$singletons[$index]);
}
}
static::$singletons[$key] ??= new static($locale);
return static::$singletons[$key];
}
public function __construct($locale, ?MessageFormatterInterface $formatter = null, $cacheDir = null, $debug = false)
{
$this->initialize($locale, $formatter, $cacheDir, $debug);
}
/**
* Returns the list of directories translation files are searched in.
*/
public function getDirectories(): array
{
return $this->directories;
}
/**
* Set list of directories translation files are searched in.
*
* @param array $directories new directories list
*
* @return $this
*/
public function setDirectories(array $directories): static
{
$this->directories = $directories;
return $this;
}
/**
* Add a directory to the list translation files are searched in.
*
* @param string $directory new directory
*
* @return $this
*/
public function addDirectory(string $directory): static
{
$this->directories[] = $directory;
return $this;
}
/**
* Remove a directory from the list translation files are searched in.
*
* @param string $directory directory path
*
* @return $this
*/
public function removeDirectory(string $directory): static
{
$search = rtrim(strtr($directory, '\\', '/'), '/');
return $this->setDirectories(array_filter(
$this->getDirectories(),
static fn ($item) => rtrim(strtr($item, '\\', '/'), '/') !== $search,
));
}
/**
* Reset messages of a locale (all locale if no locale passed).
* Remove custom messages and reload initial messages from matching
* file in Lang directory.
*/
public function resetMessages(?string $locale = null): bool
{
if ($locale === null) {
$this->messages = [];
return true;
}
foreach ($this->getDirectories() as $directory) {
$data = @include sprintf('%s/%s.php', rtrim($directory, '\\/'), $locale);
if ($data !== false) {
$this->messages[$locale] = $data;
$this->addResource('array', $this->messages[$locale], $locale);
return true;
}
}
return false;
}
/**
* Returns the list of files matching a given locale prefix (or all if empty).
*
* @param string $prefix prefix required to filter result
*
* @return array
*/
public function getLocalesFiles(string $prefix = ''): array
{
$files = [];
foreach ($this->getDirectories() as $directory) {
$directory = rtrim($directory, '\\/');
foreach (glob("$directory/$prefix*.php") as $file) {
$files[] = $file;
}
}
return array_unique($files);
}
/**
* Returns the list of internally available locales and already loaded custom locales.
* (It will ignore custom translator dynamic loading.)
*
* @param string $prefix prefix required to filter result
*
* @return array
*/
public function getAvailableLocales(string $prefix = ''): array
{
$locales = [];
foreach ($this->getLocalesFiles($prefix) as $file) {
$locales[] = substr($file, strrpos($file, '/') + 1, -4);
}
return array_unique(array_merge($locales, array_keys($this->messages)));
}
protected function translate(?string $id, array $parameters = [], ?string $domain = null, ?string $locale = null): string
{
if ($domain === null) {
$domain = 'messages';
}
$catalogue = $this->getCatalogue($locale);
$format = $this instanceof TranslatorStrongTypeInterface
? $this->getFromCatalogue($catalogue, (string) $id, $domain)
: $this->getCatalogue($locale)->get((string) $id, $domain); // @codeCoverageIgnore
if ($format instanceof Closure) {
// @codeCoverageIgnoreStart
try {
$count = (new ReflectionFunction($format))->getNumberOfRequiredParameters();
} catch (ReflectionException) {
$count = 0;
}
// @codeCoverageIgnoreEnd
return $format(
...array_values($parameters),
...array_fill(0, max(0, $count - \count($parameters)), null)
);
}
return parent::trans($id, $parameters, $domain, $locale);
}
/**
* Init messages language from matching file in Lang directory.
*
* @param string $locale
*
* @return bool
*/
protected function loadMessagesFromFile(string $locale): bool
{
return isset($this->messages[$locale]) || $this->resetMessages($locale);
}
/**
* Set messages of a locale and take file first if present.
*
* @param string $locale
* @param array $messages
*
* @return $this
*/
public function setMessages(string $locale, array $messages): static
{
$this->loadMessagesFromFile($locale);
$this->addResource('array', $messages, $locale);
$this->messages[$locale] = array_merge(
$this->messages[$locale] ?? [],
$messages
);
return $this;
}
/**
* Set messages of the current locale and take file first if present.
*
* @param array $messages
*
* @return $this
*/
public function setTranslations(array $messages): static
{
return $this->setMessages($this->getLocale(), $messages);
}
/**
* Get messages of a locale, if none given, return all the
* languages.
*/
public function getMessages(?string $locale = null): array
{
return $locale === null ? $this->messages : $this->messages[$locale];
}
/**
* Set the current translator locale and indicate if the source locale file exists
*
* @param string $locale locale ex. en
*/
public function setLocale($locale): void
{
$locale = preg_replace_callback('/[-_]([a-z]{2,}|\d{2,})/', function ($matches) {
// _2-letters or YUE is a region, _3+-letters is a variant
$upper = strtoupper($matches[1]);
if ($upper === 'YUE' || $upper === 'ISO' || \strlen($upper) <= static::REGION_CODE_LENGTH) {
return "_$upper";
}
return '_'.ucfirst($matches[1]);
}, strtolower($locale));
$previousLocale = $this->getLocale();
if ($previousLocale === $locale && isset($this->messages[$locale])) {
return;
}
unset(static::$singletons[$previousLocale]);
if ($locale === 'auto') {
$completeLocale = setlocale(LC_TIME, '0');
$locale = preg_replace('/^([^_.-]+).*$/', '$1', $completeLocale);
$locales = $this->getAvailableLocales($locale);
$completeLocaleChunks = preg_split('/[_.-]+/', $completeLocale);
$getScore = static fn ($language) => self::compareChunkLists(
$completeLocaleChunks,
preg_split('/[_.-]+/', $language),
);
usort($locales, static fn ($first, $second) => $getScore($second) <=> $getScore($first));
$locale = $locales[0];
}
if (isset($this->aliases[$locale])) {
$locale = $this->aliases[$locale];
}
// If subtag (ex: en_CA) first load the macro (ex: en) to have a fallback
if (str_contains($locale, '_') &&
$this->loadMessagesFromFile($macroLocale = preg_replace('/^([^_]+).*$/', '$1', $locale))
) {
parent::setLocale($macroLocale);
}
if (!$this->loadMessagesFromFile($locale) && !$this->initializing) {
return;
}
parent::setLocale($locale);
}
/**
* Show locale on var_dump().
*
* @return array
*/
public function __debugInfo()
{
return [
'locale' => $this->getLocale(),
];
}
public function __serialize(): array
{
return [
'locale' => $this->getLocale(),
];
}
public function __unserialize(array $data): void
{
$this->initialize($data['locale'] ?? 'en');
}
private function initialize($locale, ?MessageFormatterInterface $formatter = null, $cacheDir = null, $debug = false): void
{
parent::setLocale($locale);
$this->initializing = true;
$this->directories = [__DIR__.'/Lang'];
$this->addLoader('array', new ArrayLoader());
parent::__construct($locale, new MessageFormatterMapper($formatter), $cacheDir, $debug);
$this->initializing = false;
}
private static function compareChunkLists($referenceChunks, $chunks)
{
$score = 0;
foreach ($referenceChunks as $index => $chunk) {
if (!isset($chunks[$index])) {
$score++;
continue;
}
if (strtolower($chunks[$index]) === strtolower($chunk)) {
$score += 10;
}
}
return $score;
}
}