mirror of
https://github.com/adamhathcock/sharpcompress.git
synced 2026-02-04 05:25:00 +00:00
615 lines
10 KiB
C#
615 lines
10 KiB
C#
using System;
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using System.Buffers;
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using System.IO;
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using System.Threading.Tasks;
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using SharpCompress.Compressors.LZMA;
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using Xunit;
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namespace SharpCompress.Test.Streams;
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public class LzmaStreamAsyncTests
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{
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[Fact]
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public async ValueTask TestLzma2Decompress1ByteAsync()
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{
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var properties = new byte[] { 0x01 };
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var compressedData = new byte[] { 0x01, 0x00, 0x00, 0x58, 0x00 };
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var lzma2Stream = new MemoryStream(compressedData);
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var decompressor = LzmaStream.Create(properties, lzma2Stream, 5, 1);
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var buffer = new byte[1];
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var bytesRead = await decompressor.ReadAsync(buffer, 0, 1).ConfigureAwait(false);
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Assert.Equal(1, bytesRead);
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Assert.Equal((byte)'X', buffer[0]);
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}
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private static byte[] LzmaData { get; } =
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[
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0x5D,
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0x00,
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0x20,
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0x00,
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0x00,
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0x48,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x80,
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0x24,
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0x18,
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0x2F,
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0xEB,
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0x20,
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0x78,
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0xBA,
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0x78,
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0x70,
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0xDC,
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0x43,
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0x2C,
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0x32,
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0xC9,
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0xC3,
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0x97,
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0x4D,
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0x10,
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0x74,
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0xE2,
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0x20,
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0xBF,
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0x5A,
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0xB4,
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0xB3,
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0xC4,
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0x31,
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0x80,
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0x26,
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0x3E,
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0x6A,
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0xEA,
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0x51,
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0xFC,
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0xE4,
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0x8D,
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0x54,
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0x96,
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0x05,
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0xCC,
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0x78,
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0x59,
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0xAC,
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0xD4,
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0x21,
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0x65,
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0x8F,
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0xA9,
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0xC8,
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0x0D,
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0x9B,
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0xE2,
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0xC2,
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0xF9,
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0x7C,
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0x3C,
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0xDD,
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0x4D,
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0x38,
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0x04,
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0x0B,
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0xF8,
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0x0B,
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0x68,
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0xA5,
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0x93,
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0x6C,
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0x64,
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0xAC,
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0xCF,
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0x71,
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0x68,
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0xE8,
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0x69,
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0x25,
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0xC6,
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0x17,
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0x28,
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0xF1,
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0x7C,
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0xF1,
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0xDC,
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0x47,
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0x51,
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0x4D,
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0x1E,
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0x0E,
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0x0B,
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0x80,
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0x37,
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0x24,
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0x58,
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0x80,
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0xF7,
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0xB4,
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0xAC,
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0x54,
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0xF1,
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0x0F,
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0x7F,
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0x0F,
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0x0F,
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0xF5,
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0x9C,
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0xDE,
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0x54,
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0x4F,
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0xA3,
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0x7B,
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0x20,
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0xC5,
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0xA8,
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0x18,
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0x3B,
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0xED,
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0xDC,
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0x04,
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0xF6,
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0xFB,
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0x86,
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0xE0,
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0xAB,
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0xB6,
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0x87,
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0x99,
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0x92,
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0x43,
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0x7B,
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0x2C,
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0xCC,
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0x31,
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0x83,
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0x90,
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0xFF,
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0xF1,
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0x76,
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0x03,
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0x90,
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];
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/// <summary>
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/// The decoded data for <see cref="LzmaData"/>.
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/// </summary>
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private static byte[] LzmaResultData { get; } =
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[
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0x01,
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0x00,
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0xFD,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0xFA,
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0x61,
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0x18,
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0x5F,
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0x02,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x02,
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0x00,
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0x00,
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0x00,
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0x03,
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0x00,
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0x00,
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0x00,
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0x01,
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0x00,
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0x00,
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0x00,
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0x02,
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0x00,
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0xB4,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x3D,
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0x61,
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0xE5,
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0x5E,
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0x03,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x12,
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0x00,
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0x00,
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0x00,
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0x02,
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0x00,
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0xB4,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0xE2,
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0x61,
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0x18,
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0x5F,
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0x04,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x12,
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0x00,
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0x00,
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0x00,
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0x29,
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0x00,
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0x00,
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0x00,
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0x01,
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0x00,
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0xFD,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x14,
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0x62,
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0x18,
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0x5F,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x03,
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0x00,
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0x00,
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0x00,
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0x40,
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0x00,
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0x00,
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0x00,
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0x09,
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0x00,
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0x00,
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0x00,
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0x02,
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0x00,
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0xB4,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x7F,
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0x61,
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0xE5,
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0x5E,
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0x05,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x3B,
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0x00,
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0x00,
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0x00,
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0xCB,
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0x15,
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0x00,
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0x00,
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0x02,
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0x00,
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0xB4,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x7F,
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0x61,
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0xE5,
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0x5E,
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0x06,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x3B,
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0x00,
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0x00,
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0x00,
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0xCB,
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0x15,
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0x00,
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0x00,
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0x02,
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0x00,
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0xB4,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x3D,
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0x61,
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0xE5,
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0x5E,
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0x07,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x12,
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0x00,
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0x00,
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0x00,
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0x02,
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0x00,
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0xB4,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0xFC,
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0x96,
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0x40,
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0x5C,
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0x08,
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0x00,
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0x00,
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0x00,
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0x60,
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0x00,
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0x00,
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0x00,
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0xFF,
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0xFF,
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0xFF,
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0xFF,
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0x00,
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0x00,
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0x00,
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0x00,
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0xF8,
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0x83,
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0x12,
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0x00,
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0xD4,
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0x99,
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0x00,
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0x00,
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0x43,
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0x95,
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0x00,
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0x00,
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0xEB,
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0x7A,
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0x00,
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0x00,
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0x40,
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0x6F,
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0x00,
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0x00,
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0xD2,
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0x6F,
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0x00,
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0x00,
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0x67,
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0x74,
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0x00,
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0x00,
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0x02,
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0x69,
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0x00,
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0x00,
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0x76,
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0x79,
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0x00,
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0x00,
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0x98,
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0x66,
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0x00,
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0x00,
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0x23,
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0x25,
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0x00,
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0x00,
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0x01,
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0x00,
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0xFD,
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0x01,
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0x00,
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0x00,
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0x00,
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0x00,
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0x3B,
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0x2F,
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0xC0,
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0x5F,
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0x09,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x03,
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0x00,
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0x00,
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0x00,
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0x69,
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0x00,
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0x3D,
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0x00,
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0x0A,
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0x00,
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0x00,
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0x00,
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];
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[Fact]
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public async ValueTask TestLzmaBufferAsync()
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{
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var input = new MemoryStream(LzmaData);
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using var output = new MemoryStream();
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var properties = new byte[5];
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await input.ReadAsync(properties, 0, 5).ConfigureAwait(false);
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var fileLengthBytes = new byte[8];
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await input.ReadAsync(fileLengthBytes, 0, 8).ConfigureAwait(false);
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var fileLength = BitConverter.ToInt64(fileLengthBytes, 0);
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var coder = new Decoder();
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coder.SetDecoderProperties(properties);
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coder.Code(input, output, input.Length, fileLength, null);
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Assert.Equal(output.ToArray(), LzmaResultData);
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}
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[Fact]
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public async ValueTask TestLzmaStreamEncodingWritesDataAsync()
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{
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using var inputStream = new MemoryStream(LzmaResultData);
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using MemoryStream outputStream = new();
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using var lzmaStream = LzmaStream.Create(
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LzmaEncoderProperties.Default,
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false,
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outputStream
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);
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await inputStream.CopyToAsync(lzmaStream).ConfigureAwait(false);
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lzmaStream.Close();
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Assert.NotEqual(0, outputStream.Length);
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}
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[Fact]
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public async ValueTask TestLzmaEncodingAccuracyAsync()
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{
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var input = new MemoryStream(LzmaResultData);
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var compressed = new MemoryStream();
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var lzmaEncodingStream = LzmaStream.Create(
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LzmaEncoderProperties.Default,
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false,
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compressed
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);
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await input.CopyToAsync(lzmaEncodingStream).ConfigureAwait(false);
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lzmaEncodingStream.Close();
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compressed.Position = 0;
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var output = new MemoryStream();
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await DecompressLzmaStreamAsync(
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lzmaEncodingStream.Properties,
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compressed,
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compressed.Length,
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output,
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LzmaResultData.LongLength
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)
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.ConfigureAwait(false);
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Assert.Equal(output.ToArray(), LzmaResultData);
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}
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private static async Task DecompressLzmaStreamAsync(
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byte[] properties,
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Stream compressedStream,
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long compressedSize,
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Stream decompressedStream,
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long decompressedSize
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)
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{
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var lzmaStream = await LzmaStream.CreateAsync(
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properties,
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compressedStream,
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compressedSize,
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-1,
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null,
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false
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);
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var buffer = new byte[1024];
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long totalRead = 0;
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while (totalRead < decompressedSize)
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{
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var toRead = (int)Math.Min(buffer.Length, decompressedSize - totalRead);
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var read = await lzmaStream.ReadAsync(buffer, 0, toRead).ConfigureAwait(false);
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if (read > 0)
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{
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await decompressedStream.WriteAsync(buffer, 0, read).ConfigureAwait(false);
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totalRead += read;
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}
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else
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{
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break;
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}
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}
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}
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}
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