kodedphp / i18n

<?php

namespace Koded\I18n;

use function bind_textdomain_codeset;

use function bindtextdomain;

use function dgettext;

use function dngettext;

use function extension_loaded;

use function locale_get_display_language;

use function setlocale;

use function textdomain;

final class GettextCatalog extends I18nCatalog

{

    private array $domains = [];

    public function language(): string

    {

        return locale_get_display_language($this->locale, $this->locale);

    }

    protected function message(string $domain, string $string, int $n): string

    {

        $domain = $this->bindDomain($domain);

        return $n > 0

            ? dngettext($domain, $string, $string, $n) // TODO plural string

            : dgettext($domain, $string);

    }

    protected function supports(string $locale): bool

    {

        return $locale === $this->locale;

    }

    protected function initialize(string $locale): string|false

    {

        // @codeCoverageIgnoreStart

        if (false === extension_loaded('gettext')) {

            return false;

        }

        if (false === extension_loaded('intl')) {

            return false;

        }

        // @codeCoverageIgnoreEnd

        $this->bindDomain('messages');

        return setlocale(LC_MESSAGES, [$locale, "$locale.UTF-8", "$locale.utf8"])

            ? $locale

            : false;

    }

    private function bindDomain(string $domain): string

    {

        if (false === isset($this->domains[$domain])) {

            $this->directory = bindtextdomain($domain, $this->directory);

            $this->domains[$domain = textdomain($domain)] = true;

            bind_textdomain_codeset($domain, 'UTF-8');

        }

        return $domain;

    }

}