squeezelite-esp32/components/spotify/cspot/bell/src/BellUtils.cpp

#include "BellUtils.h"

std::string bell::generateRandomUUID() {
    static std::random_device dev;
    static std::mt19937 rng(dev());

    std::uniform_int_distribution<int> dist(0, 15);

    const char *v = "0123456789abcdef";
    const bool dash[] = {0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0};

    std::string res;
    for (int i = 0; i < 16; i++) {
        if (dash[i])
            res += "-";
        res += v[dist(rng)];
        res += v[dist(rng)];
    }
    return res;
}

void bell::freeAndNull(void *&ptr) {
	free(ptr);
	ptr = nullptr;
}