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<?php
namespace Drupal\locale;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\State\StateInterface;
/**
* Manages the storage of plural formula per language in state.
*
* @see \Drupal\locale\PoDatabaseWriter::setHeader()
*/
class PluralFormula implements PluralFormulaInterface {
/**
* @var \Drupal\Core\Language\LanguageManagerInterface
*/
protected $languageManager;
/**
* @var \Drupal\Core\State\StateInterface
*/
protected $state;
/**
* The plural formula and count keyed by langcode.
*
* For example the structure looks like this:
* @code
* [
* 'de' => [
* 'plurals' => 2,
* 'formula' => [
* // @todo
* ]
* ],
* ]
* @endcode
* @var []
*/
protected $formulae;
/**
* @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
* @param \Drupal\Core\State\StateInterface $state
*/
public function __construct(LanguageManagerInterface $language_manager, StateInterface $state) {
$this->languageManager = $language_manager;
$this->state = $state;
}
/**
* {@inheritdoc}
*/
public function setPluralFormula($langcode, $plural_count, array $formula) {
// Ensure that the formulae are loaded.
$this->loadFormulae();
$this->formulae[$langcode] = [
'plurals' => $plural_count,
'formula' => $formula,
];
$this->state->set('locale.translation.formulae', $this->formulae);
return $this;
}
/**
* {@inheritdoc}
*/
public function getNumberOfPlurals($langcode = NULL) {
// Ensure that the formulae are loaded.
$this->loadFormulae();
// Set the langcode to use.
$langcode = $langcode ?: $this->languageManager->getCurrentLanguage()->getId();
// We assume 2 plurals if there is no explicit information yet.
if (!isset($this->formulae[$langcode]['plurals'])) {
return 2;
}
return $this->formulae[$langcode]['plurals'];
}
/**
* {@inheritdoc}
*/
public function getFormula($langcode) {
$this->loadFormulae();
return isset($this->formulae[$langcode]['formula']) ? $this->formulae[$langcode]['formula'] : FALSE;
}
/**
* Loads the formulae and stores them on the PluralFormula object if not set.
*
* @return array
*/
protected function loadFormulae() {
if (!isset($this->formulae)) {
$this->formulae = $this->state->get('locale.translation.formulae', []);
}
}
/**
* {@inheritdoc}
*/
public function reset() {
$this->formulae = NULL;
return $this;
}
}