public Stream BeginWriteFile(IArchiveWriterEntry file)
{
FinishCurrentFile();
if (file == null)
throw new ArgumentNullException("file");
mCurrentFile = new FileEntry
{
Name = file.Name,
CTime = EnsureUTC(file.CreationTime),
MTime = EnsureUTC(file.LastWriteTime),
ATime = EnsureUTC(file.LastAccessTime),
};
var attributes = file.Attributes;
if (attributes.HasValue)
mCurrentFile.Flags = (uint)attributes.Value;
if (mWriter == null && mBuffer == null)
mBuffer = new FragmentedMemoryStream();
if (mEncryption != null)
mEncryptionEncoder = mEncryption.CreateEncoder();
return mCurrentStream = new EncoderStream(this);
}
/// <summary>
/// Closes the currently opened file stream and flushes buffered metadata.
/// </summary>
public void Flush()
{
FinishCurrentFile();
if (mFiles != null && mFiles.Count != 0)
{
PrepareFinishFileSet();
if (mEncryptionEncoder != null)
{
byte[] data;
int offset, length;
mEncryptionEncoder.FinishEncryption(out data, out offset, out length);
WriteOutputInternal(data, offset, length);
}
mInputHash = CRC.Finish(mInputHash);
mOutputHash = CRC.Finish(mOutputHash);
FileSet fileset;
if (mEncryptionEncoder != null)
{
// TODO: This is actually wrong, we pass the wrong mOutputSize. FinishFileSet puts the OutputSize
// as the original input stream size. However AdjustFilesetForEncryption doesn't properly
// redirect the input streams so these two bugs cancel each other out.
fileset = FinishFileSet(mFiles.ToArray(), mInputSize, mOutputSize, mInputHash, null);
AdjustFilesetForEncryption(fileset, mEncryption, mOutputSize2, null);
}
else
{
Debug.Assert(mOutputSize2 == 0);
fileset = FinishFileSet(mFiles.ToArray(), mInputSize, mOutputSize, mInputHash, mOutputHash);
}
mFiles.Clear();
mInputSize = 0;
mOutputSize = 0;
mOutputSize2 = 0;
mInputHash = CRC.kInitCRC;
mOutputHash = CRC.kInitCRC;
if (IsConnected)
{
mWriter.Encoder_FinishFileSet(fileset);
}
else
{
if (mFlushed == null)
mFlushed = new List<BufferedFileSet>();
Debug.Assert(mBuffer != null);
mFlushed.Add(new BufferedFileSet(fileset, mBuffer));
mBuffer = null;
}
}
if (mEncryptionEncoder != null)
{
mEncryptionEncoder.Dispose();
mEncryptionEncoder = null;
}
}
public BufferedFileSet(FileSet metadata, FragmentedMemoryStream buffer)
{
mMetadata = metadata;
mBuffer = buffer;
}