/
IcuFormatter.php
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/
IcuFormatter.php
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<?php
/**
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://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. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\I18n\Formatter;
use Aura\Intl\Exception;
use Aura\Intl\FormatterInterface;
use Cake\I18n\PluralRules;
use MessageFormatter;
/**
* A formatter that will interpolate variables using the MessageFormatter class
*/
class IcuFormatter implements FormatterInterface
{
/**
* Returns a string with all passed variables interpolated into the original
* message. Variables are interpolated using the MessageFormatter class.
*
* If an array is passed in `$message`, it will trigger the plural selection
* routine. Plural forms are selected depending on the locale and the `_count`
* key passed in `$vars`.
*
* @param string $locale The locale in which the message is presented.
* @param string|array $message The message to be translated
* @param array $vars The list of values to interpolate in the message
* @return string The formatted message
*/
public function format($locale, $message, array $vars)
{
$isString = is_string($message);
if ($isString && isset($vars['_singular'])) {
$message = [$vars['_singular'], $message];
unset($vars['_singular']);
$isString = false;
}
if ($isString) {
return $this->_formatMessage($locale, $message, $vars);
}
if (isset($vars['_context'], $message['_context'])) {
$message = $message['_context'][$vars['_context']];
unset($vars['_context']);
}
// Assume first context when no context key was passed
if (isset($message['_context'])) {
$message = current($message['_context']);
}
if (!is_string($message)) {
$count = isset($vars['_count']) ? $vars['_count'] : 0;
unset($vars['_count'], $vars['_singular']);
$form = PluralRules::calculate($locale, $count);
$message = isset($message[$form]) ? $message[$form] : end($message);
}
return $this->_formatMessage($locale, $message, $vars);
}
/**
* Does the actual formatting using the MessageFormatter class
*
* @param string $locale The locale in which the message is presented.
* @param string|array $message The message to be translated
* @param array $vars The list of values to interpolate in the message
* @return string The formatted message
* @throws \Aura\Intl\Exception\CannotInstantiateFormatter if any error occurred
* while parsing the message
* @throws \Aura\Intl\Exception\CannotFormat If any error related to the passed
* variables is found
*/
protected function _formatMessage($locale, $message, $vars)
{
// Using procedural style as it showed twice as fast as
// its counterpart in PHP 5.5
$result = MessageFormatter::formatMessage($locale, $message, $vars);
if ($result === false) {
// The user might be interested in what went wrong, so replay the
// previous action using the object oriented style to figure out
$formatter = new MessageFormatter($locale, $message);
if (!$formatter) {
throw new Exception\CannotInstantiateFormatter(intl_get_error_message(), intl_get_error_code());
}
$formatter->format($vars);
throw new Exception\CannotFormat($formatter->getErrorMessage(), $formatter->getErrorCode());
}
return $result;
}
}