private static List <RawVariable> ReadRawVariables(byte[] bytes, SubsystemData subsystemData)
{
using var stream = new MemoryStream(bytes);
using var reader = new BinaryReader(stream);
reader.ReadBytes(8);
return(MatFileReader.ReadRawVariables(reader, -1, subsystemData));
}
/// <summary>
/// Read subsystem data from a given byte array.
/// </summary>
/// <param name="bytes">Byte array with the data.</param>
/// <param name="subsystemData">
/// Link to the existing subsystem data; this will be put in nested OpaqueLink objects
/// and later replaced with the subsystem data that we are currently reading.</param>
/// <returns>Subsystem data read.</returns>
public static SubsystemData Read(byte[] bytes, SubsystemData subsystemData)
{
List <RawVariable> rawVariables = null;
using (var stream = new MemoryStream(bytes))
{
using (var reader = new BinaryReader(stream))
{
reader.ReadBytes(8);
rawVariables = MatFileReader.ReadRawVariables(reader, -1, subsystemData);
}
}
// Parse subsystem data.
var mainVariable = rawVariables[0].DataElement as IStructureArray;
var mcosData = mainVariable["MCOS", 0] as Opaque;
var opaqueData = mcosData.RawData as ICellArray;
var info = (opaqueData[0] as IArrayOf <byte>).Data;
var(offsets, position) = ReadOffsets(info, 0);
var fieldNames = ReadFieldNames(info, position, offsets[1]);
var numberOfClasses = ((offsets[3] - offsets[2]) / 16) - 1;
Dictionary <int, string> classIdToName = null;
using (var stream = new MemoryStream(info, offsets[2], offsets[3] - offsets[2]))
{
using (var reader = new BinaryReader(stream))
{
classIdToName = ReadClassNames(reader, fieldNames, numberOfClasses);
}
}
var numberOfObjects = ((offsets[5] - offsets[4]) / 24) - 1;
Dictionary <int, (int, int)> objectClasses = null;
using (var stream = new MemoryStream(info, offsets[4], offsets[5] - offsets[4]))
{
using (var reader = new BinaryReader(stream))
{
objectClasses = ReadObjectClasses(reader, numberOfObjects);
}
}
Dictionary <int, Dictionary <int, int> > objectToFields = null;
using (var stream = new MemoryStream(info, offsets[5], offsets[6] - offsets[5]))
{
using (var reader = new BinaryReader(stream))
{
objectToFields = ReadObjectToFieldsMapping(reader, numberOfObjects);
}
}
var(classInformation, objectInformation) =
GatherClassAndObjectInformation(
classIdToName,
fieldNames,
objectClasses,
objectToFields);
var allFields = objectInformation.Values.SelectMany(obj => obj.FieldLinks.Values);
var data = new Dictionary <int, IArray>();
foreach (var i in allFields)
{
data[i] = TransformOpaqueData(opaqueData[i + 2], subsystemData);
}
return(new SubsystemData(classInformation, objectInformation, data));
}
