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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Intl;
use Symfony\Component\Icu\IcuCurrencyBundle;
use Symfony\Component\Icu\IcuData;
use Symfony\Component\Icu\IcuLanguageBundle;
use Symfony\Component\Icu\IcuLocaleBundle;
use Symfony\Component\Icu\IcuRegionBundle;
use Symfony\Component\Intl\ResourceBundle\Reader\BufferedBundleReader;
use Symfony\Component\Intl\ResourceBundle\Reader\StructuredBundleReader;
/**
* Gives access to internationalization data.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class Intl
{
/**
* The number of resource bundles to buffer. Loading the same resource
* bundle for n locales takes up n spots in the buffer.
*/
const BUFFER_SIZE = 10;
/**
* @var ResourceBundle\CurrencyBundleInterface
*/
private static $currencyBundle;
/**
* @var ResourceBundle\LanguageBundleInterface
*/
private static $languageBundle;
/**
* @var ResourceBundle\LocaleBundleInterface
*/
private static $localeBundle;
/**
* @var ResourceBundle\RegionBundleInterface
*/
private static $regionBundle;
/**
* @var string|Boolean|null
*/
private static $icuVersion = false;
/**
* @var string
*/
private static $icuDataVersion = false;
/**
* @var ResourceBundle\Reader\StructuredBundleReaderInterface
*/
private static $bundleReader;
/**
* Returns whether the intl extension is installed.
*
* @return Boolean Returns true if the intl extension is installed, false otherwise.
*/
public static function isExtensionLoaded()
{
return class_exists('\ResourceBundle');
}
/**
* Returns the bundle containing currency information.
*
* @return ResourceBundle\CurrencyBundleInterface The currency resource bundle.
*/
public static function getCurrencyBundle()
{
if (null === self::$currencyBundle) {
self::$currencyBundle = new IcuCurrencyBundle(self::getBundleReader());
}
return self::$currencyBundle;
}
/**
* Returns the bundle containing language information.
*
* @return ResourceBundle\LanguageBundleInterface The language resource bundle.
*/
public static function getLanguageBundle()
{
if (null === self::$languageBundle) {
self::$languageBundle = new IcuLanguageBundle(self::getBundleReader());
}
return self::$languageBundle;
}
/**
* Returns the bundle containing locale information.
*
* @return ResourceBundle\LocaleBundleInterface The locale resource bundle.
*/
public static function getLocaleBundle()
{
if (null === self::$localeBundle) {
self::$localeBundle = new IcuLocaleBundle(self::getBundleReader());
}
return self::$localeBundle;
}
/**
* Returns the bundle containing region information.
*
* @return ResourceBundle\RegionBundleInterface The region resource bundle.
*/
public static function getRegionBundle()
{
if (null === self::$regionBundle) {
self::$regionBundle = new IcuRegionBundle(self::getBundleReader());
}
return self::$regionBundle;
}
/**
* Returns the version of the installed ICU library.
*
* @return null|string The ICU version or NULL if it could not be determined.
*/
public static function getIcuVersion()
{
if (false === self::$icuVersion) {
if (!self::isExtensionLoaded()) {
self::$icuVersion = self::getIcuStubVersion();
} elseif (defined('INTL_ICU_VERSION')) {
self::$icuVersion = INTL_ICU_VERSION;
} else {
try {
$reflector = new \ReflectionExtension('intl');
ob_start();
$reflector->info();
$output = strip_tags(ob_get_clean());
preg_match('/^ICU version (?:=>)?(.*)$/m', $output, $matches);
self::$icuVersion = trim($matches[1]);
} catch (\ReflectionException $e) {
self::$icuVersion = null;
}
}
}
return self::$icuVersion;
}
/**
* Returns the version of the installed ICU data.
*
* @return string The version of the installed ICU data.
*/
public static function getIcuDataVersion()
{
if (false === self::$icuDataVersion) {
self::$icuDataVersion = IcuData::getVersion();
}
return self::$icuDataVersion;
}
/**
* Returns the ICU version that the stub classes mimic.
*
* @return string The ICU version of the stub classes.
*/
public static function getIcuStubVersion()
{
return '50.1.2';
}
/**
* Returns a resource bundle reader for .php resource bundle files.
*
* @return ResourceBundle\Reader\StructuredBundleReaderInterface The resource reader.
*/
private static function getBundleReader()
{
if (null === self::$bundleReader) {
self::$bundleReader = new StructuredBundleReader(new BufferedBundleReader(
IcuData::getBundleReader(),
self::BUFFER_SIZE
));
}
return self::$bundleReader;
}
/**
* This class must not be instantiated.
*/
private function __construct() {}
}
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