public ZipReturn ZipFileCreate(string newFilename, SevenZipCompressType compressOutput, int dictionarySize = 1 << 24, int numFastBytes = 64)
{
if (ZipOpen != ZipOpenType.Closed)
{
return(ZipReturn.ZipFileAlreadyOpen);
}
CompressUtils.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(_zipFs, Encoding.UTF8, true))
{
_signatureHeader.Write(bw);
}
_baseOffset = _zipFs.Position;
_packedOutStreams = new List <outStreams>();
_compType = compressOutput;
#if solid
outStreams newStream = new()
{
packedStart = (ulong)_zipFs.Position,
compType = compressOutput,
packedSize = 0,
unpackedStreams = new List <UnpackedStreamInfo>()
};
switch (compressOutput)
{
case SevenZipCompressType.lzma:
LzmaEncoderProperties ep = new(true, dictionarySize, numFastBytes);
LzmaStream lzs = new(ep, false, _zipFs);
newStream.Method = new byte[] { 3, 1, 1 };
newStream.Properties = lzs.Properties;
_compressStream = lzs;
break;
case SevenZipCompressType.zstd:
ZstdSharp.CompressionStream zss = new(_zipFs, 19);
newStream.Method = new byte[] { 4, 247, 17, 1 };
newStream.Properties = new byte[] { 1, 5, 19, 0, 0 };
_compressStream = zss;
break;
case SevenZipCompressType.uncompressed:
newStream.Method = new byte[] { 0 };
newStream.Properties = null;
_compressStream = _zipFs;
break;
}
_packedOutStreams.Add(newStream);
#endif
return(ZipReturn.ZipGood);
}
public ZipReturn ZipFileCreateFromUncompressedSize(string newFilename, SevenZipCompressType ctype, ulong unCompressedSize)
{
return(ZipFileCreate(newFilename, ctype, GetDictionarySizeFromUncompressedSize(unCompressedSize)));
}
