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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\Util;
- /**
- * Scans a directory with data files for locales.
- *
- * The name of each file with the extension ".txt" is considered, if it "looks"
- * like a locale:
- *
- * - the name must start with two letters;
- * - the two letters may optionally be followed by an underscore and any
- * sequence of other symbols.
- *
- * For example, "de" and "de_DE" are considered to be locales. "root" and "meta"
- * are not.
- *
- * @author Bernhard Schussek <bschussek@gmail.com>
- *
- * @internal
- */
- class LocaleScanner
- {
- /**
- * Returns all locales found in the given directory.
- *
- * @return array An array of locales. The result also contains locales that
- * are in fact just aliases for other locales. Use
- * {@link scanAliases()} to determine which of the locales
- * are aliases
- */
- public function scanLocales(string $sourceDir): array
- {
- $locales = glob($sourceDir.'/*.txt', \GLOB_NOSORT);
- // Remove file extension and sort
- array_walk($locales, function (&$locale) { $locale = basename($locale, '.txt'); });
- // Remove non-locales
- $locales = array_filter($locales, function ($locale) {
- return preg_match('/^[a-z]{2}(_.+)?$/', $locale);
- });
- sort($locales);
- return $locales;
- }
- /**
- * Returns all locale aliases found in the given directory.
- *
- * @return array An array with the locale aliases as keys and the aliased
- * locales as values
- */
- public function scanAliases(string $sourceDir): array
- {
- $locales = $this->scanLocales($sourceDir);
- $aliases = [];
- // Delete locales that are no aliases
- foreach ($locales as $locale) {
- $content = file_get_contents($sourceDir.'/'.$locale.'.txt');
- // Aliases contain the text "%%ALIAS" followed by the aliased locale
- if (preg_match('/"%%ALIAS"\{"([^"]+)"\}/', $content, $matches)) {
- $aliases[$locale] = $matches[1];
- }
- }
- return $aliases;
- }
- /**
- * Returns all locale parents found in the given directory.
- */
- public function scanParents(string $sourceDir): array
- {
- $locales = $this->scanLocales($sourceDir);
- $fallbacks = [];
- foreach ($locales as $locale) {
- $content = file_get_contents($sourceDir.'/'.$locale.'.txt');
- // Aliases contain the text "%%PARENT" followed by the aliased locale
- if (preg_match('/%%Parent{"([^"]+)"}/', $content, $matches)) {
- $fallbacks[$locale] = $matches[1];
- }
- }
- return $fallbacks;
- }
- }
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