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<?php
/**
* This file is part of the Carbon package.
*
* (c) Brian Nesbitt <brian@nesbot.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Carbon;
use Closure;
use ReflectionException;
use ReflectionFunction;
use Symfony\Component\Translation;
class Translator extends Translation\Translator
{
/**
* Translator singletons for each language.
*
* @var array
*/
protected static $singletons = [];
/**
* List of custom localized messages.
*
* @var array
*/
protected $messages = [];
/**
* List of custom directories that contain translation files.
*
* @var string[]
*/
protected $directories = [];
/**
* Set to true while constructing.
*
* @var bool
*/
protected $initializing = false;
/**
* List of locales aliases.
*
* @var string[]
*/
protected $aliases = [
'me' => 'sr_Latn_ME',
'scr' => 'sh',
];
/**
* Return a singleton instance of Translator.
*
* @param string|null $locale optional initial locale ("en" - english by default)
*
* @return static
*/
public static function get($locale = null)
{
$locale = $locale ?: 'en';
if (!isset(static::$singletons[$locale])) {
static::$singletons[$locale] = new static($locale ?: 'en');
}
return static::$singletons[$locale];
}
public function __construct($locale, Translation\Formatter\MessageFormatterInterface $formatter = null, $cacheDir = null, $debug = false)
{
$this->initializing = true;
$this->directories = [__DIR__.'/Lang'];
$this->addLoader('array', new Translation\Loader\ArrayLoader());
parent::__construct($locale, $formatter, $cacheDir, $debug);
$this->initializing = false;
}
/**
* Returns the list of directories translation files are searched in.
*
* @return array
*/
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)
{
$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)
{
$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)
{
$search = rtrim(strtr($directory, '\\', '/'), '/');
return $this->setDirectories(array_filter($this->getDirectories(), function ($item) use ($search) {
return rtrim(strtr($item, '\\', '/'), '/') !== $search;
}));
}
/**
* Returns the translation.
*
* @param string $id
* @param array $parameters
* @param string $domain
* @param string $locale
*
* @return string
*/
public function trans($id, array $parameters = [], $domain = null, $locale = null)
{
if (null === $domain) {
$domain = 'messages';
}
$format = $this->getCatalogue($locale)->get((string) $id, $domain);
if ($format instanceof Closure) {
// @codeCoverageIgnoreStart
try {
$count = (new ReflectionFunction($format))->getNumberOfRequiredParameters();
} catch (ReflectionException $exception) {
$count = 0;
}
// @codeCoverageIgnoreEnd
return $format(
...array_values($parameters),
...array_fill(0, max(0, $count - \count($parameters)), null)
);
}
return parent::trans($id, $parameters, $domain, $locale);
}
/**
* Reset messages of a locale (all locale if no locale passed).
* Remove custom messages and reload initial messages from matching
* file in Lang directory.
*
* @param string|null $locale
*
* @return bool
*/
public function resetMessages($locale = null)
{
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 $prefix prefix required to filter result
*
* @return array
*/
public function getLocalesFiles($prefix = '')
{
$files = [];
foreach ($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 $prefix prefix required to filter result
*
* @return array
*/
public function getAvailableLocales($prefix = '')
{
$locales = [];
foreach ($this->getLocalesFiles($prefix) as $file) {
$locales[] = substr($file, strrpos($file, '/') + 1, -4);
}
return array_unique(array_merge($locales, array_keys($this->messages)));
}
/**
* Init messages language from matching file in Lang directory.
*
* @param string $locale
*
* @return bool
*/
protected function loadMessagesFromFile($locale)
{
if (isset($this->messages[$locale])) {
return true;
}
return $this->resetMessages($locale);
}
/**
* Set messages of a locale and take file first if present.
*
* @param string $locale
* @param array $messages
*
* @return $this
*/
public function setMessages($locale, $messages)
{
$this->loadMessagesFromFile($locale);
$this->addResource('array', $messages, $locale);
$this->messages[$locale] = array_merge(
isset($this->messages[$locale]) ? $this->messages[$locale] : [],
$messages
);
return $this;
}
/**
* Set messages of the current locale and take file first if present.
*
* @param array $messages
*
* @return $this
*/
public function setTranslations($messages)
{
return $this->setMessages($this->getLocale(), $messages);
}
/**
* Get messages of a locale, if none given, return all the
* languages.
*
* @param string|null $locale
*
* @return array
*/
public function getMessages($locale = null)
{
return $locale === null ? $this->messages : $this->messages[$locale];
}
/**
* Set the current translator locale and indicate if the source locale file exists
*
* @param string $locale locale ex. en
*
* @return bool
*/
public function setLocale($locale)
{
$locale = preg_replace_callback('/[-_]([a-z]{2,}|[0-9]{2,})/', function ($matches) {
// _2-letters or YUE is a region, _3+-letters is a variant
$upper = strtoupper($matches[1]);
if ($upper === 'YUE' || $upper === 'ISO' || \strlen($upper) < 3) {
return "_$upper";
}
return '_'.ucfirst($matches[1]);
}, strtolower($locale));
$previousLocale = $this->getLocale();
if ($previousLocale === $locale) {
return true;
}
unset(static::$singletons[$previousLocale]);
if ($locale === 'auto') {
$completeLocale = setlocale(LC_TIME, '0');
$locale = preg_replace('/^([^_.-]+).*$/', '$1', $completeLocale);
$locales = $this->getAvailableLocales($locale);
$completeLocaleChunks = preg_split('/[_.-]+/', $completeLocale);
$getScore = function ($language) use ($completeLocaleChunks) {
return static::compareChunkLists($completeLocaleChunks, preg_split('/[_.-]+/', $language));
};
usort($locales, function ($first, $second) use ($getScore) {
return $getScore($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 (strpos($locale, '_') !== false &&
$this->loadMessagesFromFile($macroLocale = preg_replace('/^([^_]+).*$/', '$1', $locale))
) {
parent::setLocale($macroLocale);
}
if ($this->loadMessagesFromFile($locale) || $this->initializing) {
parent::setLocale($locale);
return true;
}
return false;
}
/**
* Show locale on var_dump().
*
* @return array
*/
public function __debugInfo()
{
return [
'locale' => $this->getLocale(),
];
}
private static function compareChunkLists($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;
}
}