1<?php 2 3/** 4 * webtrees: online genealogy 5 * Copyright (C) 2021 webtrees development team 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, either version 3 of the License, or 9 * (at your option) any later version. 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <https://www.gnu.org/licenses/>. 16 */ 17 18declare(strict_types=1); 19 20namespace Fisharebest\Webtrees\Elements; 21 22use Fisharebest\Webtrees\Tree; 23 24use function strtoupper; 25 26/** 27 * CHARACTER_SET := {Size=1:8} 28 * [ ANSEL |UTF-8 | UNICODE | ASCII ] 29 * A code value that represents the character set to be used to interpret this 30 * data. Currently, the preferred character set is ANSEL, which includes ASCII 31 * as a subset. UNICODE is not widely supported by most operating systems; 32 * therefore, GEDCOM produced using the UNICODE character set will be limited 33 * in its interchangeability for a while but should eventually provide the 34 * international flexibility that is desired. See Chapter 3, starting on page 35 * 77. 36 * Note:The IBMPC character set is not allowed. This character set cannot be 37 * interpreted properly without knowing which code page the sender was using. 38 */ 39class CharacterSet extends AbstractElement 40{ 41 /** 42 * Convert a value to a canonical form. 43 * 44 * @param string $value 45 * 46 * @return string 47 */ 48 public function canonical(string $value): string 49 { 50 return strtoupper(parent::canonical($value)); 51 } 52 53 /** 54 * Create a default value for this element. 55 * 56 * @param Tree $tree 57 * 58 * @return string 59 */ 60 public function default(Tree $tree): string 61 { 62 return 'UTF-8'; 63 } 64 65 /** 66 * A list of controlled values for this element 67 * 68 * @return array<int|string,string> 69 */ 70 public function values(): array 71 { 72 return [ 73 'UTF-8' => 'UTF-8', 74 'UNICODE' => 'UNICODE', 75 'ANSEL' => 'ANSEL', 76 'ASCII' => 'ASCII', 77 ]; 78 } 79} 80