Function GetUuid

util/generic/guid.cpp:142–174

}

bool GetUuid(const TStringBuf s, TGUID& result) {
    if (s.size() != 36) {
        return false;
    }

    size_t partId = 0;
    ui64 partValue = 0;
    size_t digitCount = 0;

    for (size_t i = 0; i < s.size(); ++i) {
        const char c = s[i];

        if (c == '-') {
            if (i != 8 && i != 13 && i != 18 && i != 23) {
                return false;
            }
            continue;
        }

        ui32 digit = 0;
        if (!GetDigit(c, digit)) {
            return false;
        }

        partValue = partValue * 16 + digit;

        if (++digitCount == 8) {
            result.dw[partId++] = partValue;
            digitCount = 0;
        }
    }
    return true;
}

// Parses GUID from uuid and checks that it's valid.
// In case of error returns TGUID().