Line data    Source code

       1              : /*
       2              :  * SPDX-License-Identifier: GPL-3.0-only
       3              :  * MuseScore-CLA-applies
       4              :  *
       5              :  * MuseScore Studio
       6              :  * Music Composition & Notation
       7              :  *
       8              :  * Copyright (C) 2021 MuseScore Limited and others
       9              :  *
      10              :  * This program is free software: you can redistribute it and/or modify
      11              :  * it under the terms of the GNU General Public License version 3 as
      12              :  * published by the Free Software Foundation.
      13              :  *
      14              :  * This program is distributed in the hope that it will be useful,
      15              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      16              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17              :  * GNU General Public License for more details.
      18              :  *
      19              :  * You should have received a copy of the GNU General Public License
      20              :  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
      21              :  */
      22              : #include "uuid.h"
      23              : 
      24              : #include <random>
      25              : 
      26              : using namespace muse;
      27              : 
      28            0 : std::string Uuid::gen()
      29              : {
      30            0 :     static std::random_device dev;
      31            0 :     static std::mt19937 rng(dev());
      32              : 
      33            0 :     std::uniform_int_distribution<int> dist(0, 15);
      34              : 
      35              :     static const char* v = "0123456789abcdef";
      36              :     static const bool dash[] = { 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0 };
      37              : 
      38            0 :     std::string res;
      39            0 :     for (int i = 0; i < 16; i++) {
      40            0 :         if (dash[i]) {
      41            0 :             res += "-";
      42              :         }
      43            0 :         res += v[dist(rng)];
      44            0 :         res += v[dist(rng)];
      45              :     }
      46            0 :     return res;
      47            0 : }