/**
* Convert the source file to the destination file.
*
* @param OutputInterface $output An OutputInterface instance.
*
* @param ContaoFile $src The source Contao file.
*
* @param XLiffFile $dst The destination XLIFF file.
*
* @param ContaoFile $base The base Contao file.
*
* @return void
*/
protected function convert(OutputInterface $output, ContaoFile $src, XLiffFile $dst, ContaoFile $base)
{
$baseKeys = $base->getKeys();
foreach ($baseKeys as $key) {
if (!($basVal = $base->getValue($key))) {
$dst->remove($key);
continue;
}
$dst->setSource($key, $basVal);
if (($value = $src->getValue($key)) !== null) {
$dst->setTarget($key, $value);
}
}
foreach ($dst->getKeys() as $key) {
if (!in_array($key, $baseKeys)) {
$this->writelnVerbose($output, sprintf('Language key <info>%s</info> is not present in the source. Removing it.', $key));
$dst->remove($key);
}
}
}
