29 lines
1006 B
C++
29 lines
1006 B
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/guid.h"
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#include "base/rand_util.h"
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#include "base/strings/stringprintf.h"
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namespace base {
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std::string GenerateGUID() {
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uint64 sixteen_bytes[2] = { base::RandUint64(), base::RandUint64() };
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return RandomDataToGUIDString(sixteen_bytes);
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}
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// TODO(cmasone): Once we're comfortable this works, migrate Windows code to
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// use this as well.
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std::string RandomDataToGUIDString(const uint64 bytes[2]) {
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return StringPrintf("%08X-%04X-%04X-%04X-%012llX",
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static_cast<unsigned int>(bytes[0] >> 32),
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static_cast<unsigned int>((bytes[0] >> 16) & 0x0000ffff),
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static_cast<unsigned int>(bytes[0] & 0x0000ffff),
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static_cast<unsigned int>(bytes[1] >> 48),
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bytes[1] & 0x0000ffffffffffffULL);
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}
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} // namespace guid
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