public CompressionInfo(Stream file, CryptoClass crypto)
{
byte[] headBytes = new byte[Header.HeadBegin.Length];
file.Position = 0;
file.Read(headBytes, 0, headBytes.Length);
if (crypto != null)
{
if (!headBytes.SequenceEqual(Header.HeadEncBegin))
{
throw new NotAnOOFPackException();
}
}
else
{
if (headBytes.SequenceEqual(Header.HeadEncBegin))
{
throw new EncryptedException();
}
else if (!headBytes.SequenceEqual(Header.HeadBegin))
{
throw new NotAnOOFPackException();
}
}
HeadBytes = ResolveHead(file, out int offset);
Diff = ResolveDiff(HeadBytes);
BufferSize = ResolveBufferSize(HeadBytes);
Files = ResolveFiles(HeadBytes);
DataPos = Header.HeadBegin.Length + sizeof(int) + offset;
PacketAmount = Diff.Count;
foreach (uint i in Diff)
{
TotalCompressRatio += ((BufferSize - i) / (BufferSize * (double)PacketAmount));
}
foreach (FileData f in Files)
{
TotalUncompressedSize += f.Length;
}
}
public FileUnpacker(string filePathtoUnpack, CryptoClass crypto, CancellationToken ct)
{
Token = ct;
filePath = filePathtoUnpack;
this.crypto = crypto;
inputStream = new FileStream(filePathtoUnpack, FileMode.Open, FileAccess.Read);
compressInfo = new CompressionInfo(inputStream, crypto);
try
{
decompStream = new DecompressionStream(inputStream, compressInfo, crypto);
decompStream.ReadByte();
decompStream.Dispose();
}
catch (System.Security.Cryptography.CryptographicException)
{
inputStream.Dispose();
throw new IncorrectKeyException();
}
fileDatas = compressInfo.Files;
inputStream.Dispose();
}
public FileBuilder(string[] inputFiles, uint BufferSize, CryptoClass crypto)
{
this.inputFiles = inputFiles;
this.BufferSize = BufferSize;
this.crypto = crypto;
}
public FileBuilder(string[] inputFiles, CryptoClass crypto) : this(inputFiles, 1048576, crypto)
{
}
public DecompressionStream(Stream toDecompressStream, CompressionInfo compressionInfo, CryptoClass crypto)
{
this.crypto = crypto;
inputStream = toDecompressStream;
ci = compressionInfo;
Position = 0;
}
public DecompressionStream(Stream toDecompressStream, CryptoClass crypto) : this(toDecompressStream, null, crypto)
{
ci = new CompressionInfo(toDecompressStream, null);
}
public FileUnpacker(string filePathtoUnpack, CryptoClass crypto) : this(filePathtoUnpack, crypto, CancellationToken.None)
{
}