UUIDGenerator.cc

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/*
 * Copyright 2010 Savarese Software Research Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.savarese.com/software/ApacheLicense-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <ssrc/wispers/utility/UUIDGenerator.h>
#include <ssrc/wispers/utility/endian.h>

#include <algorithm>
#include <cstring>

__BEGIN_NS_SSRC_WSPR_UTILITY

namespace {
  const bool IsLittleEndian = is_little_endian();
}

uuid_key_type uuid_to_uuid_key(const boost::uuids::uuid & uuid) {
  uuid_key_type key;

  // We could also do this at compile-time via an ifdef.
  if(IsLittleEndian) {
    std::reverse_copy(uuid.begin(), uuid.end(),
                      reinterpret_cast<boost::uuids::uuid::iterator>(&key));
    std::swap(key.high_bits, key.low_bits);
  } else {
    std::memcpy(&key, uuid.data, sizeof(uuid.data));
  }

  return key;
}

__END_NS_SSRC_WSPR_UTILITY