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1<?php
2/**
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
16 * http://www.gnu.org/copyleft/gpl.html
17 *
18 * @file
19 */
20
21namespace MediaWiki\EditPage\Constraint;
22
23use StatusValue;
24
25/**
26 * Verify unicode constraint
27 *
28 * @since 1.36
29 * @internal
30 */
31class UnicodeConstraint implements IEditConstraint {
32
33    /**
34     * @var string
35     * Correct unicode
36     */
37    public const VALID_UNICODE = 'ℳ𝒲β™₯π“Šπ“ƒπ’Ύπ’Έβ„΄π’Ήβ„―';
38
39    /**
40     * @var string
41     * Unicode string provided, to compare
42     */
43    private $input;
44
45    /**
46     * @param string $inputUnicode
47     */
48    public function __construct( string $inputUnicode ) {
49        $this->input = $inputUnicode;
50    }
51
52    public function checkConstraint(): string {
53        if ( $this->input === self::VALID_UNICODE ) {
54            return self::CONSTRAINT_PASSED;
55        }
56        return self::CONSTRAINT_FAILED;
57    }
58
59    public function getLegacyStatus(): StatusValue {
60        $statusValue = StatusValue::newGood();
61        if ( $this->input !== self::VALID_UNICODE ) {
62            $statusValue->fatal( 'unicode-support-fail' );
63            $statusValue->value = self::AS_UNICODE_NOT_SUPPORTED;
64        }
65        return $statusValue;
66    }
67
68}