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Very early SevenZip WIP version

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This commit is contained in:
gjefferyes
2015-03-18 08:48:48 -05:00
parent 7830068257
commit 5d9d63fb08
55 changed files with 9683 additions and 3477 deletions
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70
ROMVault2/SupportedFiles/SevenZip/Structure/Coder.cs Normal file
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using System;
using System.IO;
namespace ROMVault2.SupportedFiles.SevenZip.Structure
{
public class Coder
{
public byte[] Method;
public ulong NumInStreams;
public ulong NumOutStreams;
public byte[] Properties;
public void Read(BinaryReader br)
{
Util.log("Begin : ReadCoder", 1);
byte flags = br.ReadByte();
Util.log("Flags = " + flags.ToString("X"));
int decompressionMethodIdSize = flags & 0xf;
Method = br.ReadBytes(decompressionMethodIdSize);
if ((flags & 0x10) != 0)
{
NumInStreams = br.ReadEncodedUInt64();
Util.log("NumInStreams = " + NumInStreams);
NumOutStreams = br.ReadEncodedUInt64();
Util.log("NumOutStreams = " + NumOutStreams);
}
else
{
NumInStreams = 1;
NumOutStreams = 1;
}
if ((flags & 0x20) != 0)
{
ulong propSize = br.ReadEncodedUInt64();
Util.log("PropertiesSize = " + propSize);
Properties = br.ReadBytes((int)propSize);
Util.log("Properties = " + Properties);
}
if ((flags & 0x80) != 0)
throw new NotSupportedException("External flag");
Util.log("End : ReadCoder", -1);
}
public void Write(BinaryWriter bw)
{
byte flags = (byte)Method.Length;
if (NumInStreams != 1 || NumOutStreams != 1)
flags = (byte)(flags | 0x10);
if (Properties != null && Properties.Length > 0)
flags = (byte)(flags | 0x20);
bw.Write(flags);
bw.Write(Method);
if (NumInStreams != 1 || NumOutStreams != 1)
{
bw.WriteEncodedUInt64(NumInStreams);
bw.WriteEncodedUInt64(NumOutStreams);
}
if (Properties != null && Properties.Length > 0)
{
bw.WriteEncodedUInt64((ulong) Properties.Length);
bw.Write(Properties);
}
}
}
}