/**
* Implements Drupal\Component\Gettext\PoMetadataInterface::setHeader().
*
* Sets the header and configure Drupal accordingly.
*
* Before being able to process the given header we need to know in what
* context this database write is done. For this the options must be set.
*
* A langcode is required to set the current header's PluralForm.
*
* @param \Drupal\Component\Gettext\PoHeader $header
* Header metadata.
*
* @throws Exception
*/
public function setHeader(PoHeader $header)
{
$this->header = $header;
$locale_plurals = \Drupal::state()->get('locale.translation.plurals') ?: array();
// Check for options.
$options = $this->getOptions();
if (empty($options)) {
throw new \Exception('Options should be set before assigning a PoHeader.');
}
$overwrite_options = $options['overwrite_options'];
// Check for langcode.
$langcode = $this->langcode;
if (empty($langcode)) {
throw new \Exception('Langcode should be set before assigning a PoHeader.');
}
if (array_sum($overwrite_options) || empty($locale_plurals[$langcode]['plurals'])) {
// Get and store the plural formula if available.
$plural = $header->getPluralForms();
if (isset($plural) && ($p = $header->parsePluralForms($plural))) {
list($nplurals, $formula) = $p;
$locale_plurals[$langcode] = array('plurals' => $nplurals, 'formula' => $formula);
\Drupal::state()->set('locale.translation.plurals', $locale_plurals);
}
}
}
