private EncodingStatistics Encode(string inputPath, string outputFile, CancellationToken cancellationToken, IProgress <CodingProgressInfo> progress)
{
HuffmanEncoder encoder = new HuffmanEncoder();
DirectoryEncodingInputStream directoryInputStream = new DirectoryEncodingInputStream(inputPath, fileSystemService, platform);
FileEncodingOutputStream outputStream = new FileEncodingOutputStream(outputFile, platform);
ITaskProgressController tpc = CreateTaskProgressController(progress, directoryInputStream);
try {
outputStream.BeginWrite();
tpc.StartIndeterminate();
EncodingToken encodingToken = encoder.CreateEncodingToken(directoryInputStream, cancellationToken);
tpc.EndIndeterminate();
streamBuilder.Initialize(platform, encodingToken, outputStream);
streamBuilder.AddWeightsTable(new BootstrapSegment(encodingToken.WeightsTable));
tpc.Start();
foreach (FileSystemEntry entry in fileSystemService.EnumFileSystemEntries(inputPath))
{
switch (entry.Type)
{
case FileSystemEntryType.Directory:
streamBuilder.AddDirectory(new DirectorySegment(entry.Name, entry.Cardinality));
break;
case FileSystemEntryType.File:
streamBuilder.AddFile(new FileSegment(entry.Name, entry.Path), cancellationToken, tpc);
break;
default:
throw new InvalidOperationException();
}
}
outputStream.EndWrite();
tpc.Finish();
return(new EncodingStatistics(directoryInputStream.SizeInBytes, outputStream.SizeInBytes));
}
catch {
tpc.Error();
throw;
}
finally {
directoryInputStream.Dispose();
outputStream.Dispose();
}
}
private byte[] Encode(byte[] data, out HuffmanTreeBase tree, out long streamSize)
{
MemoryStream outputMemoryStream = new MemoryStream();
FileEncodingInputStream inputStream = CreateFileEncodingInputStream(data);
FileEncodingOutputStream outputStream = CreateFileEncodingOutputStream(outputMemoryStream);
HuffmanEncoder encoder = new HuffmanEncoder();
try {
outputStream.BeginWrite();
EncodingToken token = encoder.CreateEncodingToken(inputStream, CancellationToken.None);
streamSize = encoder.Encode(inputStream, outputStream, token, CancellationToken.None, null);
outputStream.EndWrite();
tree = token.HuffmanTree;
return(outputMemoryStream.ToArray());
}
finally {
inputStream.Dispose();
outputStream.Dispose();
}
}