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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\Translation\Catalogue;
use Symfony\Component\Translation\MessageCatalogue;
use Symfony\Component\Translation\MessageCatalogueInterface;
/**
* Base catalogues binary operation class.
*
* A catalogue binary operation performs operation on
* source (the left argument) and target (the right argument) catalogues.
*
* @author Jean-François Simon <contact@jfsimon.fr>
*/
abstract class AbstractOperation implements OperationInterface
{
/**
* @var MessageCatalogueInterface The source catalogue
*/
protected $source;
/**
* @var MessageCatalogueInterface The target catalogue
*/
protected $target;
/**
* @var MessageCatalogue The result catalogue
*/
protected $result;
/**
* @var null|array The domains affected by this operation
*/
private $domains;
/**
* This array stores 'all', 'new' and 'obsolete' messages for all valid domains.
*
* The data structure of this array is as follows:
* ```php
* array(
* 'domain 1' => array(
* 'all' => array(...),
* 'new' => array(...),
* 'obsolete' => array(...)
* ),
* 'domain 2' => array(
* 'all' => array(...),
* 'new' => array(...),
* 'obsolete' => array(...)
* ),
* ...
* )
* ```
*
* @var array The array that stores 'all', 'new' and 'obsolete' messages
*/
protected $messages;
/**
* @param MessageCatalogueInterface $source The source catalogue
* @param MessageCatalogueInterface $target The target catalogue
*
* @throws \LogicException
*/
public function __construct(MessageCatalogueInterface $source, MessageCatalogueInterface $target)
{
if ($source->getLocale() !== $target->getLocale()) {
throw new \LogicException('Operated catalogues must belong to the same locale.');
}
$this->source = $source;
$this->target = $target;
$this->result = new MessageCatalogue($source->getLocale());
$this->domains = null;
$this->messages = array();
}
/**
* {@inheritdoc}
*/
public function getDomains()
{
if (null === $this->domains) {
$this->domains = array_values(array_unique(array_merge($this->source->getDomains(), $this->target->getDomains())));
}
return $this->domains;
}
/**
* {@inheritdoc}
*/
public function getMessages($domain)
{
if (!in_array($domain, $this->getDomains())) {
throw new \InvalidArgumentException(sprintf('Invalid domain: %s.', $domain));
}
if (!isset($this->messages[$domain]['all'])) {
$this->processDomain($domain);
}
return $this->messages[$domain]['all'];
}
/**
* {@inheritdoc}
*/
public function getNewMessages($domain)
{
if (!in_array($domain, $this->getDomains())) {
throw new \InvalidArgumentException(sprintf('Invalid domain: %s.', $domain));
}
if (!isset($this->messages[$domain]['new'])) {
$this->processDomain($domain);
}
return $this->messages[$domain]['new'];
}
/**
* {@inheritdoc}
*/
public function getObsoleteMessages($domain)
{
if (!in_array($domain, $this->getDomains())) {
throw new \InvalidArgumentException(sprintf('Invalid domain: %s.', $domain));
}
if (!isset($this->messages[$domain]['obsolete'])) {
$this->processDomain($domain);
}
return $this->messages[$domain]['obsolete'];
}
/**
* {@inheritdoc}
*/
public function getResult()
{
foreach ($this->getDomains() as $domain) {
if (!isset($this->messages[$domain])) {
$this->processDomain($domain);
}
}
return $this->result;
}
/**
* Performs operation on source and target catalogues for the given domain and
* stores the results.
*
* @param string $domain The domain which the operation will be performed for
*/
abstract protected function processDomain($domain);
}