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<?php
/**
* webtrees: online genealogy
* Copyright (C) 2022 webtrees development team
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
declare(strict_types=1);
namespace Fisharebest\Webtrees\Module;
use Fisharebest\Localization\Locale\LocaleCs;
use Fisharebest\Localization\Locale\LocaleInterface;
use Illuminate\Database\Query\Builder;
use function mb_substr;
use function str_starts_with;
* Class LanguageCzech.
class LanguageCzech extends AbstractModule implements ModuleLanguageInterface
{
use ModuleLanguageTrait;
* Phone-book ordering of letters.
*
* @return array<int,string>
public function alphabet(): array
return ['A', 'Á', 'B', 'C', 'Č', 'D', 'Ď', 'E', 'É', 'Ě', 'F', 'G', 'H', 'CH', 'I', 'Í', 'J', 'K', 'L', 'M', 'N', 'Ň', 'O', 'Ó', 'P', 'Q', 'R', 'Ř', 'S', 'Š', 'T', 'Ť', 'U', 'Ú', 'Ů', 'V', 'W', 'X', 'Y', 'Ý', 'Z', 'Ž'];
}
* Some languages use digraphs and trigraphs.
* @param string $string
* @return string
public function initialLetter(string $string): string
if (str_starts_with($string, 'CS')) {
return 'CS';
return mb_substr($string, 0, 1);
* @param string $column
* @param string $letter
* @param Builder $query
* @return void
public function initialLetterSQL(string $column, string $letter, Builder $query): void
$query->where($column . ' /*! COLLATE utf8_czech_ci */', 'LIKE', '\\' . $letter . '%');
if ($letter === 'C') {
$query->where($column . ' /*! COLLATE utf8_czech_ci */', 'NOT LIKE', 'CS%');
* @return LocaleInterface
public function locale(): LocaleInterface
return new LocaleCs();