83 lines
2.4 KiB
C#
83 lines
2.4 KiB
C#
// Licensed to the Apache Software Foundation(ASF) under one
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// or more contributor license agreements.See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership.The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Text;
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namespace Thrift.Protocol.Utilities
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{
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public static class TGuidExtensions
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{
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public static Guid SwapByteOrder(this Guid self)
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{
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var bytes = self.ToByteArray();
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// already network order on BigEndian machines
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if (BitConverter.IsLittleEndian)
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{
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SwapBytes(ref bytes[0], ref bytes[3]);
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SwapBytes(ref bytes[1], ref bytes[2]);
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SwapBytes(ref bytes[4], ref bytes[5]);
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SwapBytes(ref bytes[6], ref bytes[7]);
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}
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return new Guid(bytes);
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}
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private static void SwapBytes(ref byte one, ref byte two)
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{
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var tmp = one;
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one = two;
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two = tmp;
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}
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#region SelfTest
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#if DEBUG
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static private readonly Guid TEST_GUID = new Guid("{00112233-4455-6677-8899-aabbccddeeff}");
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static TGuidExtensions()
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{
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SelfTest();
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}
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private static void SelfTest()
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{
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// host to network
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var guid = TEST_GUID;
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guid = guid.SwapByteOrder();
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// validate network order
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var bytes = guid.ToByteArray();
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for (var i = 0; i < 10; ++i)
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{
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var expected = i * 0x11;
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Debug.Assert( bytes[i] == expected);
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}
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// network to host and final validation
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guid = guid.SwapByteOrder();
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Debug.Assert(guid.Equals(TEST_GUID));
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}
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#endif
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#endregion
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}
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}
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