9157873f5b
* Fix compilation on GCC-13 GCC-13 changes internal cstdint includes, and now files that uses standart integer types should directly include cstdint header. See: https://gcc.gnu.org/gcc-13/porting_to.html#header-dep-changes Bug: https://bugs.gentoo.org/865117 Bug: https://bugs.gentoo.org/895440 * Convert line endings to Unix format
77 lines
1.6 KiB
C++
77 lines
1.6 KiB
C++
/*
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* IXUuid.cpp
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* Author: Benjamin Sergeant
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* Copyright (c) 2018 Machine Zone. All rights reserved.
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*/
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/**
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* Generate a random uuid similar to the uuid python module
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*
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* >>> import uuid
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* >>> uuid.uuid4().hex
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* 'bec08155b37d4050a1f3c3fa0276bf12'
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*
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* Code adapted from https://github.com/r-lyeh-archived/sole
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*/
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#include "IXUuid.h"
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#include <cstdint>
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#include <iomanip>
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#include <random>
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#include <sstream>
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#include <string>
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namespace ix
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{
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class Uuid
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{
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public:
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Uuid();
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std::string toString() const;
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private:
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uint64_t _ab;
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uint64_t _cd;
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};
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Uuid::Uuid()
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{
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static std::random_device rd;
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static std::uniform_int_distribution<uint64_t> dist(0, (uint64_t)(~0));
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_ab = dist(rd);
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_cd = dist(rd);
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_ab = (_ab & 0xFFFFFFFFFFFF0FFFULL) | 0x0000000000004000ULL;
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_cd = (_cd & 0x3FFFFFFFFFFFFFFFULL) | 0x8000000000000000ULL;
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}
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std::string Uuid::toString() const
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{
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std::stringstream ss;
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ss << std::hex << std::nouppercase << std::setfill('0');
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uint32_t a = (_ab >> 32);
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uint32_t b = (_ab & 0xFFFFFFFF);
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uint32_t c = (_cd >> 32);
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uint32_t d = (_cd & 0xFFFFFFFF);
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ss << std::setw(8) << (a);
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ss << std::setw(4) << (b >> 16);
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ss << std::setw(4) << (b & 0xFFFF);
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ss << std::setw(4) << (c >> 16);
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ss << std::setw(4) << (c & 0xFFFF);
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ss << std::setw(8) << d;
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return ss.str();
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}
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std::string uuid4()
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{
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Uuid id;
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return id.toString();
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}
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} // namespace ix
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