Will parse every xliff files and will add missing id attributes to be compliant with strict Symfony xliff parsing

XliffFixerCommand.php

<?php

namespace AppBundle\Command;

use AppBundle\Entity\Event\Event;
use AppBundle\Entity\Event\Topic;
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Finder\Finder;
use Taiga\Api;

class XliffFixerCommand extends ContainerAwareCommand
{
    /**
     * {@inheritdoc}
     */
    public function configure()
    {
        parent::configure();

        $this
            ->setName('xliff:fixer')
            ->addOption('path', null, InputOption::VALUE_OPTIONAL, 'Where the script will search for xliff files', __DIR__.'/..')
            ->setDescription('Regenerate ids for each trans-unit');
    }

    /**
     * @param InputInterface  $input
     * @param OutputInterface $output
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $finder = new Finder();
        $finder->files()->in($input->getOption('path'))->name('*\.xliff');

        foreach ($finder as $file) {
            $output->write(sprintf('<comment>%s</comment>', $file->getFilename()));
            $xml = simplexml_load_file($file->getRealPath());
            foreach ($xml->file->body->{'trans-unit'} as $item) {
                /* @var \SimpleXMLElement $item */
                $item->attributes()->{'id'} = uniqid();
                if ((string) $item->attributes()->{'id'} === '') {
                    $item->addAttribute('id', uniqid());
                }
            }
            $xml->saveXML($file->getRealPath());
            $output->writeln(sprintf('<info> OK</info>', $file->getFilename()));
        }
    }
}