spogulis no
https://github.com/nextcloud/server.git
synced 2024-08-30 17:57:26 +02:00
98 rindas
3.4 KiB
PHP
98 rindas
3.4 KiB
PHP
<?php
|
||
|
||
declare(strict_types=1);
|
||
|
||
/**
|
||
* @copyright Copyright (c) 2020, Georg Ehrke
|
||
*
|
||
* @author Georg Ehrke <oc.list@georgehrke.com>
|
||
* @author Joas Schilling <coding@schilljs.com>
|
||
*
|
||
* @license GNU AGPL version 3 or any later version
|
||
*
|
||
* This program is free software: you can redistribute it and/or modify
|
||
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Affero General Public License
|
||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
*
|
||
*/
|
||
namespace OC;
|
||
|
||
use OCP\IDBConnection;
|
||
use OCP\IEmojiHelper;
|
||
|
||
class EmojiHelper implements IEmojiHelper {
|
||
private IDBConnection $db;
|
||
|
||
public function __construct(IDBConnection $db) {
|
||
$this->db = $db;
|
||
}
|
||
|
||
public function doesPlatformSupportEmoji(): bool {
|
||
return $this->db->supports4ByteText() &&
|
||
\class_exists(\IntlBreakIterator::class);
|
||
}
|
||
|
||
public function isValidSingleEmoji(string $emoji): bool {
|
||
$intlBreakIterator = \IntlBreakIterator::createCharacterInstance();
|
||
$intlBreakIterator->setText($emoji);
|
||
|
||
$characterCount = 0;
|
||
while ($intlBreakIterator->next() !== \IntlBreakIterator::DONE) {
|
||
$characterCount++;
|
||
}
|
||
|
||
if ($characterCount !== 1) {
|
||
return false;
|
||
}
|
||
|
||
$codePointIterator = \IntlBreakIterator::createCodePointInstance();
|
||
$codePointIterator->setText($emoji);
|
||
|
||
foreach ($codePointIterator->getPartsIterator() as $codePoint) {
|
||
$codePointType = \IntlChar::charType($codePoint);
|
||
|
||
// Unicode chars need 2 or more chars
|
||
// The characterCount before this loop already validate if is a single emoji
|
||
// This condition is to don't continue if non emoji chars
|
||
if (strlen($emoji) >= 2) {
|
||
// If the current code-point is an emoji or a modifier (like a skin-tone)
|
||
// just continue and check the next character
|
||
if ($codePointType === \IntlChar::CHAR_CATEGORY_MODIFIER_SYMBOL ||
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_MODIFIER_LETTER ||
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_OTHER_SYMBOL ||
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_FORMAT_CHAR || // i.e. 🏴 🏴
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_OTHER_PUNCTUATION || // i.e. ‼️ ⁉️ #⃣
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_LOWERCASE_LETTER || // i.e. ℹ️
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_MATH_SYMBOL || // i.e. ↔️ ◻️ ⤴️ ⤵️
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_ENCLOSING_MARK || // i.e. 0⃣..9⃣
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_DECIMAL_DIGIT_NUMBER || // i.e. 0⃣..9⃣
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_DASH_PUNCTUATION || // i.e. 〰️
|
||
$codePointType === \IntlChar::CHAR_CATEGORY_GENERAL_OTHER_TYPES
|
||
) {
|
||
continue;
|
||
}
|
||
}
|
||
|
||
// If it's neither a modifier nor an emoji, we only allow
|
||
// a zero-width-joiner or a variation selector 16
|
||
$codePointValue = \IntlChar::ord($codePoint);
|
||
if ($codePointValue === 8205 || $codePointValue === 65039) {
|
||
continue;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
}
|