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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\Bridge\Twig\Translation;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Translation\Extractor\AbstractFileExtractor;
use Symfony\Component\Translation\Extractor\ExtractorInterface;
use Symfony\Component\Translation\MessageCatalogue;
use Twig\Environment;
use Twig\Error\Error;
use Twig\Source;
/**
* TwigExtractor extracts translation messages from a twig template.
*
* @author Michel Salib <michelsalib@hotmail.com>
* @author Fabien Potencier <fabien@symfony.com>
*/
class TwigExtractor extends AbstractFileExtractor implements ExtractorInterface
{
/**
* Default domain for found messages.
*
* @var string
*/
private $defaultDomain = 'messages';
/**
* Prefix for found message.
*
* @var string
*/
private $prefix = '';
private $twig;
public function __construct(Environment $twig)
{
$this->twig = $twig;
}
/**
* {@inheritdoc}
*/
public function extract($resource, MessageCatalogue $catalogue)
{
foreach ($this->extractFiles($resource) as $file) {
try {
$this->extractTemplate(file_get_contents($file->getPathname()), $catalogue);
} catch (Error $e) {
// ignore errors, these should be fixed by using the linter
}
}
}
/**
* {@inheritdoc}
*/
public function setPrefix($prefix)
{
$this->prefix = $prefix;
}
protected function extractTemplate($template, MessageCatalogue $catalogue)
{
$visitor = $this->twig->getExtension('Symfony\Bridge\Twig\Extension\TranslationExtension')->getTranslationNodeVisitor();
$visitor->enable();
$this->twig->parse($this->twig->tokenize(new Source($template, '')));
foreach ($visitor->getMessages() as $message) {
$catalogue->set(trim($message[0]), $this->prefix.trim($message[0]), $message[1] ?: $this->defaultDomain);
}
$visitor->disable();
}
/**
* @param string $file
*
* @return bool
*/
protected function canBeExtracted($file)
{
return $this->isFile($file) && 'twig' === pathinfo($file, \PATHINFO_EXTENSION);
}
/**
* {@inheritdoc}
*/
protected function extractFromDirectory($directory)
{
$finder = new Finder();
return $finder->files()->name('*.twig')->in($directory);
}
}