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372 lines
15 KiB
372 lines
15 KiB
4 years ago
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using System;
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using System.Runtime.InteropServices;
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namespace MessagePack.Internal
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{
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[StructLayout(LayoutKind.Explicit, Pack = 1)]
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internal struct GuidBits
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{
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[FieldOffset(0)]
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public readonly Guid Value;
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[FieldOffset(0)]
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public readonly byte Byte0;
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[FieldOffset(1)]
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public readonly byte Byte1;
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[FieldOffset(2)]
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public readonly byte Byte2;
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[FieldOffset(3)]
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public readonly byte Byte3;
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[FieldOffset(4)]
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public readonly byte Byte4;
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[FieldOffset(5)]
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public readonly byte Byte5;
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[FieldOffset(6)]
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public readonly byte Byte6;
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[FieldOffset(7)]
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public readonly byte Byte7;
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[FieldOffset(8)]
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public readonly byte Byte8;
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[FieldOffset(9)]
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public readonly byte Byte9;
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[FieldOffset(10)]
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public readonly byte Byte10;
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[FieldOffset(11)]
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public readonly byte Byte11;
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[FieldOffset(12)]
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public readonly byte Byte12;
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[FieldOffset(13)]
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public readonly byte Byte13;
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[FieldOffset(14)]
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public readonly byte Byte14;
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[FieldOffset(15)]
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public readonly byte Byte15;
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// string.Join(", ", Enumerable.Range(0, 256).Select(x => (int)BitConverter.ToString(new byte[] { (byte)x }).ToLower()[0]))
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static byte[] byteToHexStringHigh = new byte[256] { 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 };
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// string.Join(", ", Enumerable.Range(0, 256).Select(x => (int)BitConverter.ToString(new byte[] { (byte)x }).ToLower()[1]))
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static byte[] byteToHexStringLow = new byte[256] { 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 98, 99, 100, 101, 102 };
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public GuidBits(ref Guid value)
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{
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this = default(GuidBits);
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this.Value = value;
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}
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// 4-pattern, lower/upper and '-' or no
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public GuidBits(ArraySegment<byte> utf8string)
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{
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this = default(GuidBits);
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var array = utf8string.Array;
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var offset = utf8string.Offset;
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// 32
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if (utf8string.Count == 32)
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{
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if (BitConverter.IsLittleEndian)
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{
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this.Byte0 = Parse(array, offset + 6);
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this.Byte1 = Parse(array, offset + 4);
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this.Byte2 = Parse(array, offset + 2);
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this.Byte3 = Parse(array, offset + 0);
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this.Byte4 = Parse(array, offset + 10);
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this.Byte5 = Parse(array, offset + 8);
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this.Byte6 = Parse(array, offset + 14);
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this.Byte7 = Parse(array, offset + 12);
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}
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else
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{
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this.Byte0 = Parse(array, offset + 0);
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this.Byte1 = Parse(array, offset + 2);
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this.Byte2 = Parse(array, offset + 4);
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this.Byte3 = Parse(array, offset + 6);
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this.Byte4 = Parse(array, offset + 8);
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this.Byte5 = Parse(array, offset + 10);
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this.Byte6 = Parse(array, offset + 12);
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this.Byte7 = Parse(array, offset + 14);
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}
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this.Byte8 = Parse(array, offset + 16);
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this.Byte9 = Parse(array, offset + 18);
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this.Byte10 = Parse(array, offset + 20);
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this.Byte11 = Parse(array, offset + 22);
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this.Byte12 = Parse(array, offset + 24);
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this.Byte13 = Parse(array, offset + 26);
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this.Byte14 = Parse(array, offset + 28);
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this.Byte15 = Parse(array, offset + 30);
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return;
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}
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else if (utf8string.Count == 36)
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{
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// '-' => 45
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if (BitConverter.IsLittleEndian)
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{
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this.Byte0 = Parse(array, offset + 6);
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this.Byte1 = Parse(array, offset + 4);
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this.Byte2 = Parse(array, offset + 2);
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this.Byte3 = Parse(array, offset + 0);
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if (array[offset + 8] != '-') goto ERROR;
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this.Byte4 = Parse(array, offset + 11);
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this.Byte5 = Parse(array, offset + 9);
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if (array[offset + 13] != '-') goto ERROR;
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this.Byte6 = Parse(array, offset + 16);
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this.Byte7 = Parse(array, offset + 14);
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}
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else
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{
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this.Byte0 = Parse(array, offset + 0);
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this.Byte1 = Parse(array, offset + 2);
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this.Byte2 = Parse(array, offset + 4);
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this.Byte3 = Parse(array, offset + 6);
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if (array[offset + 8] != '-') goto ERROR;
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this.Byte4 = Parse(array, offset + 9);
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this.Byte5 = Parse(array, offset + 11);
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if (array[offset + 13] != '-') goto ERROR;
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this.Byte6 = Parse(array, offset + 14);
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this.Byte7 = Parse(array, offset + 16);
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}
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if (array[offset + 18] != '-') goto ERROR;
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this.Byte8 = Parse(array, offset + 19);
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this.Byte9 = Parse(array, offset + 21);
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if (array[offset + 23] != '-') goto ERROR;
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this.Byte10 = Parse(array, offset + 24);
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this.Byte11 = Parse(array, offset + 26);
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this.Byte12 = Parse(array, offset + 28);
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this.Byte13 = Parse(array, offset + 30);
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this.Byte14 = Parse(array, offset + 32);
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this.Byte15 = Parse(array, offset + 34);
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return;
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}
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ERROR:
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throw new ArgumentException("Invalid Guid Pattern.");
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}
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#if NETSTANDARD
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[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
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#endif
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static byte Parse(byte[] bytes, int highOffset)
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{
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return unchecked((byte)(SwitchParse(bytes[highOffset]) * 16 + SwitchParse(bytes[highOffset + 1])));
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}
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#if NETSTANDARD
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[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
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#endif
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static byte SwitchParse(byte b)
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{
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// '0'(48) ~ '9'(57) => -48
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// 'A'(65) ~ 'F'(70) => -55
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// 'a'(97) ~ 'f'(102) => -87
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switch (b)
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{
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case 48:
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case 49:
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case 50:
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case 51:
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case 52:
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case 53:
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case 54:
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case 55:
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case 56:
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case 57:
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return unchecked((byte)((b - 48)));
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case 65:
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case 66:
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case 67:
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case 68:
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case 69:
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case 70:
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return unchecked((byte)((b - 55)));
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case 97:
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case 98:
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case 99:
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case 100:
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case 101:
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case 102:
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return unchecked((byte)((b - 87)));
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case 0:
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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case 8:
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case 9:
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case 10:
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case 11:
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case 12:
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case 13:
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case 14:
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case 15:
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case 16:
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case 17:
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case 18:
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case 19:
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case 20:
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case 21:
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case 22:
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case 23:
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case 24:
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case 25:
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case 26:
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case 27:
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case 28:
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case 29:
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case 30:
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case 31:
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case 32:
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case 33:
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case 34:
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case 35:
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case 36:
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case 37:
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case 38:
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case 39:
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case 40:
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case 41:
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case 42:
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case 43:
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case 44:
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case 45:
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case 46:
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case 47:
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case 58:
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case 59:
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case 60:
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case 61:
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case 62:
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case 63:
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case 64:
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case 71:
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case 72:
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case 73:
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case 74:
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case 75:
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case 76:
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case 77:
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case 78:
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case 79:
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case 80:
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case 81:
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case 82:
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case 83:
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case 84:
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case 85:
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case 86:
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case 87:
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case 88:
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case 89:
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case 90:
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case 91:
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case 92:
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case 93:
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case 94:
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case 95:
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case 96:
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default:
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throw new ArgumentException("Invalid Guid Pattern.");
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}
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}
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// 4(x2) - 2(x2) - 2(x2) - 2(x2) - 6(x2)
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public void Write(byte[] buffer, int offset)
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{
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if (BitConverter.IsLittleEndian)
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{
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// int(_a)
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buffer[offset + 6] = byteToHexStringHigh[Byte0];
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buffer[offset + 7] = byteToHexStringLow[Byte0];
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buffer[offset + 4] = byteToHexStringHigh[Byte1];
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buffer[offset + 5] = byteToHexStringLow[Byte1];
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buffer[offset + 2] = byteToHexStringHigh[Byte2];
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buffer[offset + 3] = byteToHexStringLow[Byte2];
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buffer[offset + 0] = byteToHexStringHigh[Byte3];
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buffer[offset + 1] = byteToHexStringLow[Byte3];
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buffer[offset + 8] = (byte)'-';
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// short(_b)
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buffer[offset + 11] = byteToHexStringHigh[Byte4];
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buffer[offset + 12] = byteToHexStringLow[Byte4];
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buffer[offset + 9] = byteToHexStringHigh[Byte5];
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buffer[offset + 10] = byteToHexStringLow[Byte5];
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buffer[offset + 13] = (byte)'-';
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// short(_c)
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buffer[offset + 16] = byteToHexStringHigh[Byte6];
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buffer[offset + 17] = byteToHexStringLow[Byte6];
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buffer[offset + 14] = byteToHexStringHigh[Byte7];
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buffer[offset + 15] = byteToHexStringLow[Byte7];
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}
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else
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{
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buffer[offset + 0] = byteToHexStringHigh[Byte0];
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buffer[offset + 1] = byteToHexStringLow[Byte0];
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buffer[offset + 2] = byteToHexStringHigh[Byte1];
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buffer[offset + 3] = byteToHexStringLow[Byte1];
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buffer[offset + 4] = byteToHexStringHigh[Byte2];
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buffer[offset + 5] = byteToHexStringLow[Byte2];
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buffer[offset + 6] = byteToHexStringHigh[Byte3];
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buffer[offset + 7] = byteToHexStringLow[Byte3];
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buffer[offset + 8] = (byte)'-';
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buffer[offset + 9] = byteToHexStringHigh[Byte4];
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buffer[offset + 10] = byteToHexStringLow[Byte4];
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buffer[offset + 11] = byteToHexStringHigh[Byte5];
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buffer[offset + 12] = byteToHexStringLow[Byte5];
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buffer[offset + 13] = (byte)'-';
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buffer[offset + 14] = byteToHexStringHigh[Byte6];
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buffer[offset + 15] = byteToHexStringLow[Byte6];
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buffer[offset + 16] = byteToHexStringHigh[Byte7];
|
||
|
|
buffer[offset + 17] = byteToHexStringLow[Byte7];
|
||
|
|
}
|
||
|
|
|
||
|
|
buffer[offset + 18] = (byte)'-';
|
||
|
|
|
||
|
|
buffer[offset + 19] = byteToHexStringHigh[Byte8];
|
||
|
|
buffer[offset + 20] = byteToHexStringLow[Byte8];
|
||
|
|
buffer[offset + 21] = byteToHexStringHigh[Byte9];
|
||
|
|
buffer[offset + 22] = byteToHexStringLow[Byte9];
|
||
|
|
|
||
|
|
buffer[offset + 23] = (byte)'-';
|
||
|
|
|
||
|
|
buffer[offset + 24] = byteToHexStringHigh[Byte10];
|
||
|
|
buffer[offset + 25] = byteToHexStringLow[Byte10];
|
||
|
|
buffer[offset + 26] = byteToHexStringHigh[Byte11];
|
||
|
|
buffer[offset + 27] = byteToHexStringLow[Byte11];
|
||
|
|
buffer[offset + 28] = byteToHexStringHigh[Byte12];
|
||
|
|
buffer[offset + 29] = byteToHexStringLow[Byte12];
|
||
|
|
buffer[offset + 30] = byteToHexStringHigh[Byte13];
|
||
|
|
buffer[offset + 31] = byteToHexStringLow[Byte13];
|
||
|
|
buffer[offset + 32] = byteToHexStringHigh[Byte14];
|
||
|
|
buffer[offset + 33] = byteToHexStringLow[Byte14];
|
||
|
|
buffer[offset + 34] = byteToHexStringHigh[Byte15];
|
||
|
|
buffer[offset + 35] = byteToHexStringLow[Byte15];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|