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Blind update of zip code to newest RVWorld version
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98
SabreTools.Library/External/Compress/SevenZip/Structure/PackedStreamInfo.cs
vendored
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98
SabreTools.Library/External/Compress/SevenZip/Structure/PackedStreamInfo.cs
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using System;
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using System.IO;
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using System.Text;
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using Compress.Utils;
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namespace Compress.SevenZip.Structure
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{
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public class PackedStreamInfo
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{
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public ulong PackedSize;
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public ulong? Crc;
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public ulong StreamPosition;
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public Stream PackedStream;
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public static void Read(BinaryReader br, out ulong packPosition, out PackedStreamInfo[] packedStreams)
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{
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packPosition = br.ReadEncodedUInt64();
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ulong numPackStreams = br.ReadEncodedUInt64();
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packedStreams = new PackedStreamInfo[numPackStreams];
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for (ulong i = 0; i < numPackStreams; i++)
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{
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packedStreams[i] = new PackedStreamInfo();
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}
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ulong streamPosition = 0;
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for (;;)
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{
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HeaderProperty hp = (HeaderProperty) br.ReadByte();
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switch (hp)
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{
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case HeaderProperty.kSize:
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for (ulong i = 0; i < numPackStreams; i++)
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{
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packedStreams[i].StreamPosition = streamPosition;
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packedStreams[i].PackedSize = br.ReadEncodedUInt64();
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streamPosition += packedStreams[i].PackedSize;
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}
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continue;
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case HeaderProperty.kCRC:
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for (ulong i = 0; i < numPackStreams; i++)
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{
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packedStreams[i].Crc = br.ReadEncodedUInt64();
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}
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continue;
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case HeaderProperty.kEnd:
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return;
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default:
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throw new Exception(hp.ToString());
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}
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}
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}
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public static void Write(BinaryWriter bw, ulong packPosition, PackedStreamInfo[] packedStreams)
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{
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ulong numPackStreams = (ulong) packedStreams.Length;
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bw.Write((byte) HeaderProperty.kPackInfo);
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bw.WriteEncodedUInt64(packPosition);
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bw.WriteEncodedUInt64(numPackStreams);
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bw.Write((byte) HeaderProperty.kSize);
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ulong streamPosition = 0;
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for (ulong i = 0; i < numPackStreams; i++)
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{
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packedStreams[i].StreamPosition = streamPosition;
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bw.WriteEncodedUInt64(packedStreams[i].PackedSize);
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streamPosition += packedStreams[i].PackedSize;
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}
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// Only checking the first CRC assuming all the reset will be the same
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if (packedStreams[0].Crc != null)
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{
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bw.Write((byte) HeaderProperty.kCRC);
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for (ulong i = 0; i < numPackStreams; i++)
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{
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bw.WriteEncodedUInt64(packedStreams[i].Crc ?? 0);
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}
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}
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bw.Write((byte) HeaderProperty.kEnd);
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}
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public void Report(ref StringBuilder sb)
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{
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sb.AppendLine($" PackedSize = {PackedSize}");
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sb.AppendLine($" Crc = {Crc.ToHex()}");
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sb.AppendLine($" StreamPosition = {StreamPosition}");
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}
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}
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}
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