private static void CompressFiles(IEnumerable <Node> files, int compressorVersion)
{
var compressorParameters = new CompressorParameters
{
Endianness = 0x00,
Version = (byte)compressorVersion,
};
Parallel.ForEach(files, node =>
{
var parFile = node.GetFormatAs <ParFile>();
if (parFile == null || !parFile.CanBeCompressed || compressorVersion == 0x00 ||
parFile.Stream.Length == 0)
{
return;
}
FileCompressing?.Invoke(node);
var compressed =
(ParFile)ConvertFormat.With <Compressor, CompressorParameters>(compressorParameters, parFile);
long diff = parFile.Stream.Length - compressed.Stream.Length;
if (diff >= 0 && (parFile.Stream.Length < 2048 || diff >= 2048))
{
node.ChangeFormat(compressed);
}
FileCompressed?.Invoke(node);
});
}
public void Compress(FileStream fs)
{
//build folders list
var folders = new List <string>();
var seq = from fd in m_files
where fd.DestFolder != null
select fd.DestFolder;
folders.AddRange(seq.Distinct(StringComparer.OrdinalIgnoreCase));
using (var gzs = new GZipStream(fs, CompressionMode.Compress))
{
var writer = new RawDataWriter(gzs, Encoding.UTF8);
writer.Write(Signature);
writer.Write(folders.Count);
foreach (string folder in folders)
{
writer.Write(folder);
}
writer.Write(m_files.Count);
foreach (FileData fd in m_files)
{
writer.Write(fd.FileName);
if (fd.DestFolder == null)
{
writer.Write(NDX_CUR_FOLDER);
}
else
{
string dir = fd.DestFolder;
int ndx = folders.FindIndex(x => string.Compare(dir, x, true) == 0);
Assert(ndx >= 0);
writer.Write(ndx);
}
using (FileStream fStream = File.OpenRead(fd.FilePath))
{
writer.Write(fStream.Length);
fStream.CopyTo(gzs);
}
FileCompressed?.Invoke(Path.Combine(fd.DestFolder ?? ".\\", fd.FileName));
}
}
}