private static void TestWrite(Stream stream, ByteOrder byteOrder)
{
var output = new BufferedStreamWriter(stream);
var dataWriter = new BinaryDataWriter(output, byteOrder);
Trace.Assert(stream.Position == 0);
dataWriter.Write(TestByte);
output.Flush(FlushMode.Shallow);
Trace.Assert(stream.Position == 1);
dataWriter.Write(TestShort);
dataWriter.Write(TestUShort);
Trace.Assert(stream.Position == 1);
output.Flush(FlushMode.Shallow);
Trace.Assert(stream.Position == 5);
dataWriter.Write(TestInt);
dataWriter.Write(TestUInt);
dataWriter.Write(TestLong);
dataWriter.Write(TestULong);
dataWriter.Write(TestFloat);
dataWriter.Write(TestDouble);
Trace.Assert(stream.Position == 5);
output.Flush(FlushMode.Shallow);
Trace.Assert(stream.Position == 41);
TestWriteArray(9 * ushort.MaxValue, TestByte, dataWriter.Write);
TestWriteArray(8 * ushort.MaxValue, TestShort, dataWriter.Write);
TestWriteArray(7 * ushort.MaxValue, TestUShort, dataWriter.Write);
TestWriteArray(6 * ushort.MaxValue, TestInt, dataWriter.Write);
TestWriteArray(5 * ushort.MaxValue, TestUInt, dataWriter.Write);
TestWriteArray(4 * ushort.MaxValue, TestLong, dataWriter.Write);
TestWriteArray(3 * ushort.MaxValue, TestULong, dataWriter.Write);
TestWriteArray(2 * ushort.MaxValue, TestFloat, dataWriter.Write);
TestWriteArray(1 * ushort.MaxValue, TestDouble, dataWriter.Write);
output.Flush(FlushMode.Deep);
}
protected static void WriteLengthPrefixedData(BinaryDataWriter dataWriter, Action <BinaryDataWriter, long> lengthWriter,
Action <BinaryDataWriter> writeDataAction)
{
using (var dataStream = new MemoryStream())
{
var dataOutput = new BufferedStreamWriter(dataStream);
writeDataAction.Invoke(new BinaryDataWriter(dataOutput, ByteOrder.BigEndian));
dataOutput.Flush(FlushMode.Shallow);
lengthWriter.Invoke(dataWriter, dataStream.Length);
dataWriter.Write(dataStream.GetBuffer().AsSpan(0, checked ((int)dataStream.Length)));
}
}
public void Flush_CorrectBytesAreSaved(int shadowBufferSize, int totBytes, int writeBlockLength, bool delayedWriter)
{
byte[] inputBuffer = Enumerable.Range(1, totBytes).Select(f => (byte)f).ToArray();
byte[] destBuffer = new byte[totBytes];
MemoryStream destStream = new MemoryStream(destBuffer);
BufferedStreamWriter s = new BufferedStreamWriter(destStream, GetConfig(shadowBufferSize, delayedWriter));
for (int ix = 0; ix < totBytes; ix += writeBlockLength)
{
s.Write(inputBuffer, ix, Math.Min(totBytes - ix, writeBlockLength));
}
s.Flush();
Assert.AreEqual(inputBuffer, destBuffer);
}
public void Flush_StreamFlushes(bool delayedWriter)
{
byte[] inputBuffer = Enumerable.Range(1, 10).Select(f => (byte)f).ToArray();
var streamMock = new Mock <Stream>(MockBehavior.Strict);
streamMock
.Setup(p => p.Write(It.IsAny <byte[]>(), It.IsAny <int>(), It.IsAny <int>()));
streamMock
.Setup(p => p.Flush());
BufferedStreamWriter s = new BufferedStreamWriter(streamMock.Object, GetConfig(4, delayedWriter));
s.Write(inputBuffer, 0, inputBuffer.Length);
s.Flush();
streamMock.Verify(f => f.Flush(), Times.Once());
}
public void SendCommand(byte presentationContextID, ICommand command, Action <Stream> dataSetWriter)
{
if (command is IMayHaveDataSet mayHaveDataSet)
{
if ((dataSetWriter == null) && mayHaveDataSet.IsDataSetRequired())
{
throw new ArgumentException($"{command} must be followed by a data set");
}
}
else if (dataSetWriter != null)
{
throw new ArgumentException($"{command} must not be followed by a data set");
}
var commandAttribute = command.GetType().GetCustomAttribute <CommandAttribute>();
command.CommandField = commandAttribute.CommandType;
command.CommandDataSetType = (ushort)((dataSetWriter == null) ? 0x0101 : 0xFEFE);
if (TraceWriter != null)
{
NetUtils.TraceOutput(TraceWriter, $"PC {presentationContextID} sending ", command);
}
using (var stream = new PresentationContextOutputStream(this, presentationContextID, FragmentType.Command))
{
var output = new BufferedStreamWriter(stream);
CommandSerialization.WriteTo(output, command);
output.Flush(FlushMode.Deep);
}
if (dataSetWriter != null)
{
using (var stream = new PresentationContextOutputStream(this, presentationContextID, FragmentType.DataSet))
{
dataSetWriter.Invoke(stream);
stream.Flush();
}
}
}
/// <summary>Writes a DICOM file header to a stream</summary>
public static void WriteHeader(BufferedStreamWriter output, DicomFileMetaInformation fileMetaInformation)
{
output.WriteZeros(128);
output.WriteBytes(BeforeFileMetaInformationLength);
var fileMetaInformationLengthPosition = output.Position;
output.WriteZeros(4);
output.WriteBytes(AfterFileMetaInformationLength);
var metaInformationWriter = DicomStreamWriter.Create(output, DicomUID.TransferSyntax.ExplicitVRLittleEndian);
FileMetaInformationSerializer.Serialize(metaInformationWriter, fileMetaInformation);
var endOfFileMetaInformationPosition = output.Position;
output.Flush(FlushMode.Shallow);
var fileMetaInformationLength = endOfFileMetaInformationPosition - (fileMetaInformationLengthPosition + 4);
output.Stream.Seek(fileMetaInformationLengthPosition, SeekOrigin.Begin);
output.Stream.Write(BitConverter.GetBytes((uint)fileMetaInformationLength));
output.Stream.Seek(endOfFileMetaInformationPosition, SeekOrigin.Begin);
}