private void Decode(string inputFile, string outputFolder, CancellationToken cancellationToken, IProgress <CodingProgressInfo> progress)
{
FileDecodingInputStream inputStream = new FileDecodingInputStream(inputFile, platform);
ITaskProgressController tpc = CreateTaskProgressController(progress, inputStream);
try {
if (inputStream.IsEmpty)
{
return;
}
StreamKind code = inputStream.ReadStreamFormat();
if (code != StreamKind.WT_CODE)
{
throw new StreamFormatException();
}
tpc.Start();
directoriesQueue.Enqueue(currentDirectory = outputFolder);
BootstrapSegment bootstrapSegment = streamParser.ParseWeightsTable(inputStream);
while (!inputStream.IsEmpty)
{
switch (inputStream.ReadStreamFormat())
{
case StreamKind.FS_CODE:
DecodeFile(inputStream, bootstrapSegment, cancellationToken, tpc);
break;
case StreamKind.DS_CODE:
DecodeDirectory(inputStream);
break;
default:
throw new StreamFormatException();
}
}
tpc.Finish();
}
catch {
tpc.Error();
throw;
}
finally {
inputStream.Dispose();
}
}
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();
}
}