public ZipReturn ZipFileCreate(string newFilename, bool compressOutput, int dictionarySize = 1 << 24, int numFastBytes = 64)
{
if (ZipOpen != ZipOpenType.Closed)
{
return(ZipReturn.ZipFileAlreadyOpen);
}
DirUtil.CreateDirForFile(newFilename);
_zipFileInfo = new FileInfo(newFilename);
int errorCode = FileStream.OpenFileWrite(newFilename, out _zipFs);
if (errorCode != 0)
{
ZipFileClose();
return(ZipReturn.ZipErrorOpeningFile);
}
ZipOpen = ZipOpenType.OpenWrite;
_signatureHeader = new SignatureHeader();
_header = new Header();
using (BinaryWriter bw = new BinaryWriter(_zipFs, Encoding.UTF8, true))
{
_signatureHeader.Write(bw);
}
_baseOffset = _zipFs.Position;
_compressed = compressOutput;
_unpackedStreamSize = 0;
if (_compressed)
{
LzmaEncoderProperties ep = new LzmaEncoderProperties(true, dictionarySize, numFastBytes);
LzmaStream lzs = new LzmaStream(ep, false, _zipFs);
_codeMSbytes = lzs.Properties;
_lzmaStream = lzs;
/*
* ZstandardStream zss = new ZstandardStream(_zipFs, 22, true);
* _codeMSbytes = new byte[] { 1, 4, 18, 0, 0 };
* _lzmaStream = zss;
*/
_packStreamStart = (ulong)_zipFs.Position;
}
return(ZipReturn.ZipGood);
}
public ZipReturn ZipFileCreate(string newFilename, bool compressOutput)
{
if (ZipOpen != ZipOpenType.Closed)
{
return(ZipReturn.ZipFileAlreadyOpen);
}
DirUtil.CreateDirForFile(newFilename);
_zipFileInfo = new FileInfo(newFilename);
int errorCode = FileStream.OpenFileWrite(newFilename, out _zipFs);
if (errorCode != 0)
{
ZipFileClose();
return(ZipReturn.ZipErrorOpeningFile);
}
ZipOpen = ZipOpenType.OpenWrite;
_signatureHeader = new SignatureHeader();
_header = new Header();
BinaryWriter bw = new BinaryWriter(_zipFs);
_signatureHeader.Write(bw);
_compressed = compressOutput;
_unpackedStreamSize = 0;
if (_compressed)
{
LzmaEncoderProperties ep = new LzmaEncoderProperties(true, 1 << 24, 64);
_lzmaStream = new LzmaStream(ep, false, _zipFs);
_codeMSbytes = _lzmaStream.Properties;
_packStreamStart = (ulong)_zipFs.Position;
}
return(ZipReturn.ZipGood);
}