private static void AssertAlgorithm(ICompressionAlgorithm algorithm, string text)
{
Assert.AreEqual(text,
Encoding.UTF8.GetString(algorithm.Decompress(algorithm.Compress(Encoding.UTF8.GetBytes(text)))));
using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(text)))
using (var compressed = algorithm.Compress(stream))
using (var decompressed = algorithm.Decompress(compressed))
using (var decompressedStream = new MemoryStream())
{
decompressed.CopyTo(decompressedStream);
Assert.AreEqual(text, Encoding.UTF8.GetString(decompressedStream.ToArray()));
}
}
private void ReadIntervalScores(PhylopInterval interval)
{
if (interval == null)
{
return;
}
var filePosition = interval.FilePosition;
//going to the file location that contains this interval.
if (filePosition != -1)
{
_reader.BaseStream.Position = filePosition;
}
else
{
return;
}
var length = _reader.ReadInt32();
var compressedScores = _reader.ReadBytes(length);
int requiredBufferSize = _qlz.GetDecompressedLength(compressedScores, length);
if (requiredBufferSize > _scoreBytes.Length)
{
_scoreBytes = new byte[requiredBufferSize];
}
var uncompressedLength = _qlz.Decompress(compressedScores, length, _scoreBytes, _scoreBytes.Length);
BytesToScores(uncompressedLength, _scoreBytes, _scores);
_scoreCount = uncompressedLength / 2;
}
public Message Decompress(ICompressionAlgorithm packer)
{
var result = packer.Decompress(Content);
Size = 0;
AddBytes(result);
return(this);
}
public void Read(ExtendedBinaryReader reader)
{
_compressedLength = reader.ReadOptInt32();
_firstPosition = reader.ReadOptInt32();
//_lastPosition = reader.ReadOptInt32();
_count = reader.ReadOptInt32();
reader.Read(_compressedBlock, 0, _compressedLength);
_uncompressedLength = _compressionAlgorithm.Decompress(_compressedBlock, _compressedLength,
_uncompressedBlock, _uncompressedBlock.Length);
}
public static Stream Decompress(this ICompressionAlgorithm algorithm, Stream stream)
{
Guard.AgainstNull(algorithm, nameof(algorithm));
Guard.AgainstNull(stream, nameof(stream));
using (var ms = new MemoryStream())
{
stream.CopyTo(ms);
return(new MemoryStream(algorithm.Decompress(ms.ToArray())));
}
}
private int ReadCompressedBlock(Stream stream)
{
var numBytesRead = stream.Read(_compressedBlock, 0, _header.NumCompressedBytes);
if (numBytesRead != _header.NumCompressedBytes)
{
throw new IOException($"Expected {_header.NumCompressedBytes} bytes from the block, but received only {numBytesRead} bytes.");
}
int numUncompressedBytes = _compressionAlgorithm.Decompress(_compressedBlock, _header.NumCompressedBytes, _uncompressedBlock, Size);
if (numUncompressedBytes != _header.NumUncompressedBytes)
{
throw new CompressionException($"Expected {_header.NumUncompressedBytes} bytes after decompression, but found only {numUncompressedBytes} bytes.");
}
return(numBytesRead);
}
private async Task <bool> ArchiveExtraction(ICompressionAlgorithm compressionAlgorithm, string fileType)
{
var archive = await _workingDir.GetFileAsync(ArchiveName + fileType);
Assert.IsNotNull(archive);
var outputFolder = await _workingDir.CreateFolderAsync("simpleZipUiTempOutput");
Assert.IsNotNull(outputFolder);
// extract archive
Assert.IsTrue(await compressionAlgorithm.Decompress(archive, outputFolder));
var files = await outputFolder.GetFilesAsync();
Assert.IsNotNull(files);
if (files.Count == 1)
{
foreach (var file in files)
{
using (var streamReader = new StreamReader(await file.OpenStreamForReadAsync()))
{
var line = streamReader.ReadLine();
Assert.IsNotNull(line);
if (!line.Equals(FileText))
{
Assert.Fail("Files do not match.");
}
}
}
}
else
{
Assert.Fail("Archive not properly created.");
}
await outputFolder.DeleteAsync(); // clean up when done
return(true);
}
public IMemoryOwner <byte> Decompress(ReadOnlyMemory <byte> input) => _compressionAlgorithm.Decompress(input);
public IMemoryOwner <byte> Decompress(ReadOnlyMemory <byte> input, IRequestSpan parentSpan)
{
using var _ = parentSpan.DecompressionSpan();
return(_compressionAlgorithm.Decompress(input));
}