public void OnWritingCompleted(ArchiveEntry entry, MemoryStream ms, bool?compression)
{
ms.Position = 0;
int compressedSize = 0;
int uncompressedSize = (int)ms.Length;
byte[] copyBuff = new byte[Math.Min(uncompressedSize, 32 * 1024)];
try
{
bool compress = uncompressedSize > 256 && (compression ?? entry.IsCompressed);
if (compress)
{
using (SafeUnmanagedArray buff = new SafeUnmanagedArray(uncompressedSize + 256))
using (UnmanagedMemoryStream buffStream = buff.OpenStream(FileAccess.ReadWrite))
{
compressedSize = ZLibHelper.Compress(ms, buffStream, uncompressedSize);
if (uncompressedSize - compressedSize > 256)
{
using (Stream output = OpenOrAppendBinary(entry, compressedSize))
{
buffStream.Position = 0;
buffStream.CopyToStream(output, compressedSize, copyBuff);
}
return;
}
}
}
ms.Position = 0;
compressedSize = uncompressedSize;
using (Stream output = OpenOrAppendBinary(entry, uncompressedSize))
ms.CopyToStream(output, uncompressedSize, copyBuff);
}
finally
{
entry.Size = compressedSize;
entry.UncompressedSize = uncompressedSize;
}
}
