internal static Datatype ReadMessage(
DatatypeHeader aHeader,
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aHeader.Class != DatatypeClass.Time)
{
throw new ArgumentException(
$"aHeader must be for type {nameof(DatatypeClass.Time)}");
}
if (aLocalMessageSize.HasValue && aLocalMessageSize < mcAddionalSize)
{
throw new ArgumentException("Specified Local Message Size not long enough");
}
Flags fFlags = (Flags)aHeader.Flags;
ByteOrdering
fByteOrdering = fFlags.HasFlag(Flags.BigEndian)
? ByteOrdering.BigEndian
: ByteOrdering.LittleEndian;
uint
fBitPrecision = aReader.ReadUInt32();
aBytes = mcAddionalSize;
return(new TimeDataType(
aHeader,
fByteOrdering,
fBitPrecision));
}
internal static Datatype ReadMessage(
DatatypeHeader aHeader,
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aHeader.Class != DatatypeClass.Opaque)
{
throw new ArgumentException(
$"aHeader must be for type {nameof(DatatypeClass.Compound)}");
}
int
fTagSize = (int)aHeader.Flags & byte.MaxValue;
if (aLocalMessageSize.HasValue && aLocalMessageSize < fTagSize)
{
throw new ArgumentException("Specified Local Message Size not long enough");
}
aBytes = fTagSize;
IEnumerable <MemberEntry>
fMembers = null;
return(new CompoundDataType(
aHeader,
fMembers));
}
internal static Datatype ReadMessage(
DatatypeHeader aHeader,
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aHeader.Class != DatatypeClass.FixedPoint)
{
throw new ArgumentException(
$"aHeader must be for type {nameof(DatatypeClass.FixedPoint)}");
}
if (aLocalMessageSize.HasValue && aLocalMessageSize < mcAddionalSize)
{
throw new ArgumentException("Specified Local Message Size not long enough");
}
Flags fFlags = (Flags)aHeader.Flags;
ByteOrdering
fByteOrdering = fFlags.HasFlag(Flags.BigEndian)
? ByteOrdering.BigEndian
: ByteOrdering.LittleEndian;
byte
fLowPad = (byte)(fFlags.HasFlag(Flags.LowPad) ? 1 : 0),
fHighPad = (byte)(fFlags.HasFlag(Flags.HighPad) ? 1 : 0);
bool
fIsSigned = fFlags.HasFlag(Flags.Signed);
ushort
fBitOffset = aReader.ReadUInt16(),
fBitPrecision = aReader.ReadUInt16();
aBytes = mcAddionalSize;
return(new FixedPointDataType(
aHeader,
fByteOrdering,
fHighPad,
fLowPad,
fIsSigned,
fBitOffset,
fBitPrecision));
}
internal static Datatype ReadMessage(
DatatypeHeader aHeader,
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aHeader.Class != DatatypeClass.Opaque)
{
throw new ArgumentException(
$"aHeader must be for type {nameof(DatatypeClass.Opaque)}");
}
int
fTagSize = (int)aHeader.Flags & byte.MaxValue;
if (aLocalMessageSize.HasValue && aLocalMessageSize < fTagSize)
{
throw new ArgumentException("Specified Local Message Size not long enough");
}
byte[]
fTagBytes = new byte[fTagSize];
int
fReadByteCount = aReader.Read(fTagBytes, 0, fTagSize);
if (fReadByteCount != fTagSize)
{
throw new EndOfStreamException("Could not read entire Opaque data type");
}
String
fAsciiTag = Encoding.ASCII.GetString(fTagBytes).TrimEnd((char)0);
aBytes = fTagSize;
return(new OpaqueDataType(
aHeader,
fAsciiTag));
}
internal static Datatype ReadMessage(
DatatypeHeader aHeader,
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aHeader.Class != DatatypeClass.String)
{
throw new ArgumentException(
$"aHeader must be for type {nameof(DatatypeClass.String)}");
}
if (aLocalMessageSize.HasValue && aLocalMessageSize < 0)
{
throw new ArgumentException("Specified Local Message Size not long enough");
}
byte
fStringPadding = (byte)(aHeader.Flags & 0x0F),
fStringEncoding = (byte)((aHeader.Flags & 0xF0) >> 4);
if (fStringPadding > (byte)StringPadding.SpacePad)
{
throw new ArgumentException($"Invalid {nameof(StringPadding)}: {fStringPadding}");
}
if (fStringEncoding > (byte)StringEncoding.UTF8)
{
throw new ArgumentException($"Invalid {nameof(StringEncoding)}: {fStringEncoding}");
}
aBytes = 0;// No addional Read
return(new StringDataType(
aHeader,
(StringPadding)fStringPadding,
(StringEncoding)fStringEncoding));
}
internal static Datatype ReadMessage(
DatatypeHeader aHeader,
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aHeader.Class != DatatypeClass.Array)
{
throw new ArgumentException(
$"aHeader must be for type {nameof(DatatypeClass.Array)}");
}
bool
fReadPermutaions;
long
fSize = sizeof(uint);
switch (aHeader.Version)
{
case DatatypeVersion.Version1:
throw new UnknownMessageVersion <ArrayDataType>(
(int)aHeader.Version,
"Arrays are not supported in verion 1");
case DatatypeVersion.Version2:
fReadPermutaions = true;
break;
default:
fReadPermutaions = false;
break;
}
byte
fDimensionality = aReader.ReadByte();
aReader.Seek(3, System.IO.SeekOrigin.Current); // Reserved bytes
uint[]
fDimeensions = Enumerable
.Range(0, fDimensionality)
.Select(a => aReader.ReadUInt32())
.ToArray();
fSize += fDimensionality * sizeof(uint);
if (fReadPermutaions)
{
if (!Enumerable.Range(0, fDimeensions.Length).All(a => a == aReader.ReadUInt32()))
{
throw new Hdf5UnsupportedFeature("Custom permutations not supported");
}
fSize += fDimensionality * sizeof(uint);
}
long?
fBaseLocalmessageSize = aLocalMessageSize;
if (fBaseLocalmessageSize.HasValue)
{
fBaseLocalmessageSize -= fSize;
}
long
fBaseTypeSize;
Datatype
fBaseType = Datatype.Read(aReader, fBaseLocalmessageSize, out fBaseTypeSize);
aBytes = fSize + fBaseTypeSize;
return(new ArrayDataType(aHeader, fDimeensions, fBaseType));
}
internal static Datatype Read(
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aLocalMessageSize.HasValue && aLocalMessageSize.Value < DatatypeHeader.HeaderSize)
{
throw new ArgumentException("Specified Local Message Size not long enough");
}
DatatypeHeader
fHeader = DatatypeHeader.Read(aReader);
Datatype
fMessage;
long
fAdditionalBytes;
long?
fBodySize = aLocalMessageSize.HasValue
? (long?)aLocalMessageSize.Value - DatatypeHeader.HeaderSize
: null;
switch (fHeader.Class)
{
case DatatypeClass.FixedPoint:
fMessage = FixedPointDataType.ReadMessage(
fHeader,
aReader,
fBodySize,
out fAdditionalBytes);
break;
case DatatypeClass.FloatingPoint:
fMessage = FloatingPointDataType.ReadMessage(
fHeader,
aReader,
fBodySize,
out fAdditionalBytes);
break;
case DatatypeClass.Time:
fMessage = TimeDataType.ReadMessage(
fHeader,
aReader,
fBodySize,
out fAdditionalBytes);
break;
case DatatypeClass.String:
fMessage = StringDataType.ReadMessage(
fHeader,
aReader,
fBodySize,
out fAdditionalBytes);
break;
case DatatypeClass.BitField:
fMessage = BitFieldDataType.ReadMessage(
fHeader,
aReader,
fBodySize,
out fAdditionalBytes);
break;
case DatatypeClass.Opaque:
fMessage = OpaqueDataType.ReadMessage(
fHeader,
aReader,
fBodySize,
out fAdditionalBytes);
break;
case DatatypeClass.Array:
fMessage = ArrayDataType.ReadMessage(
fHeader,
aReader,
fBodySize,
out fAdditionalBytes);
break;
default:
// We shoudl never git her, as header parsing should check
// for known versions of the header
throw new Exception("Unexpected Version Type");
}
aBytes = DatatypeHeader.HeaderSize + fAdditionalBytes;
return(fMessage);
}
internal static Datatype ReadMessage(
DatatypeHeader aHeader,
Hdf5Reader aReader,
long?aLocalMessageSize,
out long aBytes)
{
if (aHeader.Class != DatatypeClass.FloatingPoint)
{
throw new ArgumentException(
$"aHeader must be for type {nameof(DatatypeClass.FloatingPoint)}");
}
if (aLocalMessageSize.HasValue && aLocalMessageSize < mcAddionalSize)
{
throw new ArgumentException("Specified Local Message Size not long enough");
}
Flags fFlags = (Flags)aHeader.Flags;
ByteOrdering
fByteOrdering;
Flags
fByteOrderFlags = Flags.ByteOrderMask & fFlags;
switch (fByteOrderFlags)
{
case Flags.None:
fByteOrdering = ByteOrdering.LittleEndian;
break;
case Flags.ByteOrderLow:
fByteOrdering = ByteOrdering.BigEndian;
break;
case Flags.ByteOrderMask:
fByteOrdering = ByteOrdering.VAXOrder;
break;
default:
throw new System.IO.InvalidDataException("Unknown Byte Ordering");
}
byte
fLowPad = (byte)(fFlags.HasFlag(Flags.LowPad) ? 1 : 0),
fHighPad = (byte)(fFlags.HasFlag(Flags.HighPad) ? 1 : 0),
fInternalPad = (byte)(fFlags.HasFlag(Flags.InternalPad) ? 1 : 0);
MantissaNormalization
fMantissaNormalization;
byte
fMantissaNormFlags = (byte)((byte)(Flags.MantissaNormalizationMask & fFlags) >> 4);
if (fMantissaNormFlags > (byte)MantissaNormalization.MsbSetNotStorred)
{
throw new System.IO.InvalidDataException("Unknown Mantissa Normalization");
}
fMantissaNormalization = (MantissaNormalization)fMantissaNormFlags;
ushort
fSignLocation = (ushort)((0x00FF00 & aHeader.Flags) >> 8);
ushort
fBitOffset = aReader.ReadUInt16(),
fBitPrecision = aReader.ReadUInt16();
byte
fExponentLocation = aReader.ReadByte(),
fExponentSize = aReader.ReadByte(),
fMantissaLocation = aReader.ReadByte(),
fMantissaSize = aReader.ReadByte();
uint
fExponentBias = aReader.ReadUInt32();
aBytes = mcAddionalSize;
return(new FloatingPointDataType(
aHeader,
fByteOrdering,
fHighPad,
fLowPad,
fInternalPad,
fSignLocation,
fBitOffset,
fBitPrecision,
fExponentLocation,
fExponentSize,
fMantissaLocation,
fMantissaSize,
fExponentBias));
}
