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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\Data\Generator;
use Symfony\Component\Intl\Data\Bundle\Compiler\BundleCompilerInterface;
use Symfony\Component\Intl\Data\Bundle\Reader\BundleEntryReaderInterface;
use Symfony\Component\Intl\Data\Util\ArrayAccessibleResourceBundle;
use Symfony\Component\Intl\Data\Util\LocaleScanner;
use Symfony\Component\Intl\Exception\RuntimeException;
/**
* The rule for compiling the language bundle.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*
* @internal
*/
class LanguageDataGenerator extends AbstractDataGenerator
{
/**
* Source: http://www-01.sil.org/iso639-3/codes.asp.
*/
private static $preferredAlpha2ToAlpha3Mapping = [
'ak' => 'aka',
'ar' => 'ara',
'ay' => 'aym',
'az' => 'aze',
'bo' => 'bod',
'cr' => 'cre',
'cs' => 'ces',
'cy' => 'cym',
'de' => 'deu',
'dz' => 'dzo',
'el' => 'ell',
'et' => 'est',
'eu' => 'eus',
'fa' => 'fas',
'ff' => 'ful',
'fr' => 'fra',
'gn' => 'grn',
'hy' => 'hye',
'hr' => 'hrv',
'ik' => 'ipk',
'is' => 'isl',
'iu' => 'iku',
'ka' => 'kat',
'kr' => 'kau',
'kg' => 'kon',
'kv' => 'kom',
'ku' => 'kur',
'lv' => 'lav',
'mg' => 'mlg',
'mi' => 'mri',
'mk' => 'mkd',
'mn' => 'mon',
'ms' => 'msa',
'my' => 'mya',
'nb' => 'nob',
'ne' => 'nep',
'nl' => 'nld',
'oj' => 'oji',
'om' => 'orm',
'or' => 'ori',
'ps' => 'pus',
'qu' => 'que',
'ro' => 'ron',
'sc' => 'srd',
'sk' => 'slk',
'sq' => 'sqi',
'sr' => 'srp',
'sw' => 'swa',
'uz' => 'uzb',
'yi' => 'yid',
'za' => 'zha',
'zh' => 'zho',
];
private static $blacklist = [
'mul' => true, // Multiple languages
'mis' => true, // Uncoded language
'und' => true, // Unknown language
'zxx' => true, // No linguistic content
];
/**
* Collects all available language codes.
*
* @var string[]
*/
private $languageCodes = [];
/**
* {@inheritdoc}
*/
protected function scanLocales(LocaleScanner $scanner, $sourceDir)
{
return $scanner->scanLocales($sourceDir.'/lang');
}
/**
* {@inheritdoc}
*/
protected function compileTemporaryBundles(BundleCompilerInterface $compiler, $sourceDir, $tempDir)
{
$compiler->compile($sourceDir.'/lang', $tempDir);
$compiler->compile($sourceDir.'/misc/metadata.txt', $tempDir);
}
/**
* {@inheritdoc}
*/
protected function preGenerate()
{
$this->languageCodes = [];
}
/**
* {@inheritdoc}
*/
protected function generateDataForLocale(BundleEntryReaderInterface $reader, $tempDir, $displayLocale)
{
$localeBundle = $reader->read($tempDir, $displayLocale);
// isset() on \ResourceBundle returns true even if the value is null
if (isset($localeBundle['Languages']) && null !== $localeBundle['Languages']) {
$data = [
'Version' => $localeBundle['Version'],
'Names' => self::generateLanguageNames($localeBundle),
];
$this->languageCodes = array_merge($this->languageCodes, array_keys($data['Names']));
return $data;
}
}
/**
* {@inheritdoc}
*/
protected function generateDataForRoot(BundleEntryReaderInterface $reader, $tempDir)
{
}
/**
* {@inheritdoc}
*/
protected function generateDataForMeta(BundleEntryReaderInterface $reader, $tempDir)
{
$rootBundle = $reader->read($tempDir, 'root');
$metadataBundle = $reader->read($tempDir, 'metadata');
$this->languageCodes = array_unique($this->languageCodes);
sort($this->languageCodes);
return [
'Version' => $rootBundle['Version'],
'Languages' => $this->languageCodes,
'Aliases' => array_column(iterator_to_array($metadataBundle['alias']['language']), 'replacement'),
'Alpha2ToAlpha3' => $this->generateAlpha2ToAlpha3Mapping($metadataBundle),
];
}
private static function generateLanguageNames(ArrayAccessibleResourceBundle $localeBundle): array
{
return array_diff_key(iterator_to_array($localeBundle['Languages']), self::$blacklist);
}
private function generateAlpha2ToAlpha3Mapping(ArrayAccessibleResourceBundle $metadataBundle)
{
$aliases = iterator_to_array($metadataBundle['alias']['language']);
$alpha2ToAlpha3 = [];
foreach ($aliases as $alias => $language) {
$language = $language['replacement'];
if (2 === \strlen($language) && 3 === \strlen($alias)) {
if (isset(self::$preferredAlpha2ToAlpha3Mapping[$language])) {
// Validate to prevent typos
if (!isset($aliases[self::$preferredAlpha2ToAlpha3Mapping[$language]])) {
throw new RuntimeException('The statically set three-letter mapping '.self::$preferredAlpha2ToAlpha3Mapping[$language].' for the language code '.$language.' seems to be invalid. Typo?');
}
$alpha3 = self::$preferredAlpha2ToAlpha3Mapping[$language];
$alpha2 = $aliases[$alpha3]['replacement'];
if ($language !== $alpha2) {
throw new RuntimeException('The statically set three-letter mapping '.$alpha3.' for the language code '.$language.' seems to be an alias for '.$alpha2.'. Wrong mapping?');
}
$alpha2ToAlpha3[$language] = $alpha3;
} elseif (isset($alpha2ToAlpha3[$language])) {
throw new RuntimeException('Multiple three-letter mappings exist for the language code '.$language.'. Please add one of them to the property $preferredAlpha2ToAlpha3Mapping.');
} else {
$alpha2ToAlpha3[$language] = $alias;
}
}
}
return $alpha2ToAlpha3;
}
}
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