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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\I18n;
use Aura\Intl\Package;
use Cake\Core\App;
use Cake\Core\Plugin;
use Cake\Utility\Inflector;
use Locale;
use RuntimeException;
/**
* A generic translations package factory that will load translations files
* based on the file extension and the package name.
*
* This class is a callable, so it can be used as a package loader argument.
*/
class MessagesFileLoader
{
/**
* The package (domain) name.
*
* @var string
*/
protected $_name;
/**
* The locale to load for the given package.
*
* @var string
*/
protected $_locale;
/**
* The extension name.
*
* @var string
*/
protected $_extension;
/**
* Creates a translation file loader. The file to be loaded corresponds to
* the following rules:
*
* - The locale is a folder under the `Locale` directory, a fallback will be
* used if the folder is not found.
* - The $name corresponds to the file name to load
* - If there is a loaded plugin with the underscored version of $name, the
* translation file will be loaded from such plugin.
*
* ### Examples:
*
* Load and parse src/Locale/fr/validation.po
*
* ```
* $loader = new MessagesFileLoader('validation', 'fr_FR', 'po');
* $package = $loader();
* ```
*
* Load and parse src/Locale/fr_FR/validation.mo
*
* ```
* $loader = new MessagesFileLoader('validation', 'fr_FR', 'mo');
* $package = $loader();
* ```
*
* Load the plugins/MyPlugin/src/Locale/fr/my_plugin.po file:
*
* ```
* $loader = new MessagesFileLoader('my_plugin', 'fr_FR', 'mo');
* $package = $loader();
* ```
*
* @param string $name The name (domain) of the translations package.
* @param string $locale The locale to load, this will be mapped to a folder
* in the system.
* @param string $extension The file extension to use. This will also be mapped
* to a messages parser class.
*/
public function __construct($name, $locale, $extension = 'po')
{
$this->_name = $name;
$this->_locale = $locale;
$this->_extension = $extension;
}
/**
* Loads the translation file and parses it. Returns an instance of a translations
* package containing the messages loaded from the file.
*
* @return \Aura\Intl\Package|false
* @throws \RuntimeException if no file parser class could be found for the specified
* file extension.
*/
public function __invoke()
{
$folders = $this->translationsFolders();
$ext = $this->_extension;
$file = false;
$fileName = $this->_name;
$pos = strpos($fileName, '/');
if ($pos !== false) {
$fileName = substr($fileName, $pos + 1);
}
foreach ($folders as $folder) {
$path = $folder . $fileName . ".$ext";
if (is_file($path)) {
$file = $path;
break;
}
}
if (!$file) {
return false;
}
$name = ucfirst($ext);
$class = App::className($name, 'I18n\Parser', 'FileParser');
if (!$class) {
throw new RuntimeException(sprintf('Could not find class %s', "{$name}FileParser"));
}
$messages = (new $class)->parse($file);
$package = new Package('default');
$package->setMessages($messages);
return $package;
}
/**
* Returns the folders where the file should be looked for according to the locale
* and package name.
*
* @return array The list of folders where the translation file should be looked for
*/
public function translationsFolders()
{
$locale = Locale::parseLocale($this->_locale) + ['region' => null];
$folders = [
implode('_', [$locale['language'], $locale['region']]),
$locale['language']
];
$searchPaths = [];
$localePaths = App::path('Locale');
if (empty($localePaths) && defined('APP')) {
$localePaths[] = APP . 'Locale' . DIRECTORY_SEPARATOR;
}
foreach ($localePaths as $path) {
foreach ($folders as $folder) {
$searchPaths[] = $path . $folder . DIRECTORY_SEPARATOR;
}
}
// If space is not added after slash, the character after it remains lowercased
$pluginName = Inflector::camelize(str_replace('/', '/ ', $this->_name));
if (Plugin::loaded($pluginName)) {
$basePath = Plugin::classPath($pluginName) . 'Locale' . DIRECTORY_SEPARATOR;
foreach ($folders as $folder) {
$searchPaths[] = $basePath . $folder . DIRECTORY_SEPARATOR;
}
}
return $searchPaths;
}
}