currency-8.x-3.3/modules/currency_intl/src/Plugin/Currency/AmountFormatter/Intl.php

<?php

namespace Drupal\currency_intl\Plugin\Currency\AmountFormatter;

use Commercie\Currency\CurrencyInterface;
use Drupal\Core\Language\LanguageInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\Plugin\PluginBase;
use Drupal\currency\LocaleResolverInterface;
use Drupal\currency\Plugin\Currency\AmountFormatter\AmountFormatterInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Formats amounts using PHP's Intl extension.
 *
 * @CurrencyAmountFormatter(
 *   description = @Translation("Formats amounts using locales' Unicode number patterns for increased accuracy."),
 *   id = "currency_intl",
 *   label = @Translation("Unicode number patterns")
 * )
 */
class Intl extends PluginBase implements AmountFormatterInterface, ContainerFactoryPluginInterface {

  /**
   * The locale delegator.
   *
   * @var \Drupal\currency\LocaleResolver
   */
  protected $localeDelegator;

  /**
   * Constructs a new instance.
   *
   * @param mixed[] $configuration
   *   A configuration array containing information about the plugin instance.
   * @param string $plugin_id
   *   The plugin_id for the plugin instance.
   * @param mixed[] $plugin_definition
   *   The plugin implementation definition.
   * @param \Drupal\currency\LocaleResolverInterface $locale_delegator
   *   The locale delegator.
   */
  public function __construct(array $configuration, $plugin_id, array $plugin_definition, LocaleResolverInterface $locale_delegator) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->localeDelegator = $locale_delegator;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container->get('currency.locale_resolver'));
  }

  /**
   * {@inheritdoc}
   */
  public function formatAmount(CurrencyInterface $currency, $amount, $language_type = LanguageInterface::TYPE_CONTENT) {
    $currency_locale = $this->localeDelegator->resolveCurrencyLocale();
    $decimal_position = strpos($amount, '.');
    $number_of_decimals = $decimal_position !== FALSE ? strlen(substr($amount, $decimal_position + 1)) : 0;
    $formatter = new \NumberFormatter($currency_locale->getLocale(), \NumberFormatter::PATTERN_DECIMAL, $currency_locale->getPattern());
    $formatter->setAttribute(\NumberFormatter::FRACTION_DIGITS, $number_of_decimals);
    $formatter->setSymbol(\NumberFormatter::DECIMAL_SEPARATOR_SYMBOL, $currency_locale->getDecimalSeparator());
    $formatter->setSymbol(\NumberFormatter::MONETARY_SEPARATOR_SYMBOL, $currency_locale->getDecimalSeparator());
    $formatter->setSymbol(\NumberFormatter::GROUPING_SEPARATOR_SYMBOL, $currency_locale->getGroupingSeparator());
    $formatter->setSymbol(\NumberFormatter::MONETARY_GROUPING_SEPARATOR_SYMBOL, $currency_locale->getGroupingSeparator());
    $formatter->setSymbol(\NumberFormatter::CURRENCY_SYMBOL, $currency->getSign());
    $formatter->setSymbol(\NumberFormatter::INTL_CURRENCY_SYMBOL, $currency->getCurrencyCode());

    return $formatted = $formatter->format($amount);
  }

}