mirror of
https://github.com/wger-project/flutter.git
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46 lines
1.4 KiB
Dart
46 lines
1.4 KiB
Dart
/*
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* This file is part of wger Workout Manager <https://github.com/wger-project>.
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* Copyright (c) 2020, 2025 wger Team
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*
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* wger Workout Manager is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import 'dart:math';
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import 'dart:typed_data';
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String uuidV4() {
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final rnd = Random.secure();
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final bytes = Uint8List(16);
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for (var i = 0; i < 16; i++) {
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bytes[i] = rnd.nextInt(256);
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}
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// Set version to 4 -> xxxx0100
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bytes[6] = (bytes[6] & 0x0F) | 0x40;
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// Set variant to RFC4122 -> 10xxxxxx
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bytes[8] = (bytes[8] & 0x3F) | 0x80;
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return _bytesToUuid(bytes);
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}
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String _bytesToUuid(Uint8List bytes) {
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final sb = StringBuffer();
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for (var i = 0; i < bytes.length; i++) {
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sb.write(bytes[i].toRadixString(16).padLeft(2, '0'));
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if (i == 3 || i == 5 || i == 7 || i == 9) sb.write('-');
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}
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return sb.toString();
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}
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