/// <summary>
/// Decodes the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
/// <remarks>Length is included.</remarks>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
if (Constraint != null && Constraint.HasMinSize && Constraint.HasMinSize &&
Constraint.MinSize == Constraint.MaxSize && Constraint.MinSize <= 2) //Ref. X.691:16.6
{
long minSize = Constraint.MinSize;
bool[] bitResult = buffer.ReadBits((int)(8 * minSize));
byte[] byteResult = new byte[(int)minSize];
//Convert bool array to byte array
int byteIndex = 0, bitIndex = 0;
foreach (bool b in bitResult)
{
if (b)
{
byteResult[byteIndex] |= (byte)(1 << (7 - bitIndex));
}
bitIndex++;
if (bitIndex == 8)
{
bitIndex = 0;
byteIndex++;
}
}
ByteArrayValue = byteResult;
}
else
{
ByteArrayValue = Asn1StandardProcedure.PerDecodeArray(buffer,
decodingBuffer => decodingBuffer.ReadByte(),
Constraint != null && Constraint.HasMinSize ? Constraint.MinSize : (long?)null, Constraint != null && Constraint.HasMaxSize ? Constraint.MaxSize : (long?)null);
}
}
/// <summary>
/// Decodes the content of the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
int optionalFieldsCount = 0;
foreach (var v in fieldsMetaData)
{
if (v.Optional)
{
optionalFieldsCount++;
}
}
if (optionalFieldsCount >= 64 * 1024) //64k
{
throw new NotImplementedException("More than 64K optional fields are not supported yet.");
//Ref. X.691: 18.3
}
bool[] bitMap = buffer.ReadBits(optionalFieldsCount);
Asn1Object[] decodingResult = FieldsTypeInstances;
int curOptionalFlagIndex = 0; //index in bitMap
for (int i = 0; i < decodingResult.Length; i++)
{
if (fieldsMetaData[i].Optional == false ||
fieldsMetaData[i].Optional && bitMap[curOptionalFlagIndex++])
{
decodingResult[i].PerDecode(buffer, aligned);
}
else
{
//fieldOptionalFlags[i] equals to true and bitMap[curOptionalFlagIndex] equals to false.
decodingResult[i] = null;
}
}
for (int i = 0; i < decodingResult.Length; i++)
{
fieldsMetaData[i].ValueInOutObject = decodingResult[i];
}
}
public override void PerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
Value = buffer.ReadBits(2);
}
/// <summary>
/// Decodes the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
public override void PerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
if (aligned == false)
{
throw new NotImplementedException(ExceptionMessages.UnalignedNotImplemented);
}
long baseNum = Min ?? 0;
//Ref. X.691: 10.5.2
if (Min == null || Max == null) //range is equal to null
{
byte length = buffer.ReadByte();
if (length == 0)
{
Value = baseNum;
return;
}
byte[] result = buffer.ReadBytes(length);
if (Min == null)
{
//No base
Value = IntegerDecoding(result);
}
else
{
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(result);
}
}
else
{
if (Range == 1)
{
this.Value = Min;
}
else if (Range <= 255) //10.5.7: a)
{
int bitFieldSize = 1;
while (Range > (1 << (bitFieldSize)))
{
bitFieldSize++;
}
bool[] result = buffer.ReadBits(bitFieldSize);
byte offset = 0;
foreach (var b in result)
{
offset <<= 1;
offset += (byte)(b ? 1 : 0);
}
Value = baseNum + offset;
}
else if (Range == 256) //10.5.7: b)
{
Value = baseNum + buffer.ReadByte();
}
else if (Range <= 256 * 256) //10.5.7: c)
{
byte[] bytes = buffer.ReadBytes(2);
Value = baseNum + bytes[0] * 256 + bytes[1];
}
else //10.5.7: d)
{
Asn1Integer len = new Asn1Integer();
len.Min = 1;
len.Max = 4;
len.PerDecode(buffer);
Debug.Assert(len.Value != null, "len.Value != null");
byte[] bytes = buffer.ReadBytes((int)len.Value);
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(bytes);
}
}
if (!VerifyConstraints())
{
throw new Asn1ConstraintsNotSatisfied(ExceptionMessages.ConstraintsNotSatisfied);
}
}
/// <summary>
/// Decodes the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
public override void PerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
if (aligned == false)
{
throw new NotImplementedException(ExceptionMessages.UnalignedNotImplemented);
}
long baseNum = Min ?? 0;
//Ref. X.691: 10.5.2
if (Min == null || Max == null) //range is equal to null
{
byte length = buffer.ReadByte();
if (length == 0)
{
Value = baseNum;
return;
}
byte[] result = buffer.ReadBytes(length);
if (Min == null)
{
//No base
Value = IntegerDecoding(result);
}
else
{
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(result);
}
}
else
{
if (Range == 1)
{
this.Value = Min;
}
else if (Range <= 255) //10.5.7: a)
{
int bitFieldSize = 1;
while (Range > (1 << (bitFieldSize)))
{
bitFieldSize++;
}
bool[] result = buffer.ReadBits(bitFieldSize);
byte offset = 0;
foreach (var b in result)
{
offset <<= 1;
offset += (byte)(b ? 1 : 0);
}
Value = baseNum + offset;
}
else if (Range == 256) //10.5.7: b)
{
Value = baseNum + buffer.ReadByte();
}
else if (Range <= 256 * 256) //10.5.7: c)
{
byte[] bytes = buffer.ReadBytes(2);
Value = baseNum + bytes[0] * 256 + bytes[1];
}
else //10.5.7: d)
{
Asn1Integer len = new Asn1Integer();
len.Min = 1;
len.Max = 4;
len.PerDecode(buffer);
Debug.Assert(len.Value != null, "len.Value != null");
byte[] bytes = buffer.ReadBytes((int)len.Value);
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(bytes);
}
}
if (!VerifyConstraints())
{
throw new Asn1ConstraintsNotSatisfied(ExceptionMessages.ConstraintsNotSatisfied);
}
}
public override void PerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
Value = buffer.ReadBits(2);
}
/// <summary>
/// Decodes the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
/// <remarks>Length is included.</remarks>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
if (Constraint != null && Constraint.HasMinSize && Constraint.HasMinSize
&& Constraint.MinSize == Constraint.MaxSize && Constraint.MinSize <= 2) //Ref. X.691:16.6
{
long minSize = Constraint.MinSize;
bool[] bitResult = buffer.ReadBits((int)(8 * minSize));
byte[] byteResult = new byte[(int)minSize];
//Convert bool array to byte array
int byteIndex = 0, bitIndex = 0;
foreach (bool b in bitResult)
{
if (b)
{
byteResult[byteIndex] |= (byte)(1 << (7 - bitIndex));
}
bitIndex++;
if (bitIndex == 8)
{
bitIndex = 0;
byteIndex++;
}
}
ByteArrayValue = byteResult;
}
else
{
ByteArrayValue = Asn1StandardProcedure.PerDecodeArray(buffer,
decodingBuffer => decodingBuffer.ReadByte(),
Constraint != null && Constraint.HasMinSize ? Constraint.MinSize : (long?)null, Constraint != null && Constraint.HasMaxSize ? Constraint.MaxSize : (long?)null);
}
}
/// <summary>
/// Decodes the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
long baseNum = (Constraints != null && Constraints.HasMin ? Constraints.Min : 0);
//Ref. X.691: 10.5.2
if (Range == null) //range is equal to null
{
byte length = buffer.ReadByte();
if (length == 0)
{
Value = baseNum;
return;
}
byte[] result = buffer.ReadBytes(length);
if (Constraints == null || !Constraints.HasMin)
{
//No base
Value = IntegerDecoding(result);
}
else
{
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(result);
}
}
else
{
if (Range == 1)
{
Value = Constraints.Min;
}
else if (Range <= 255) //10.5.7: a)
{
int bitFieldSize = 1;
while (Range > (1 << (bitFieldSize)))
{
bitFieldSize++;
}
bool[] result = buffer.ReadBits(bitFieldSize);
byte offset = 0;
foreach (var b in result)
{
offset <<= 1;
offset += (byte)(b ? 1 : 0);
}
Value = baseNum + offset;
}
else if (Range == 256) //10.5.7: b)
{
Value = baseNum + buffer.ReadByte();
}
else if (Range <= 256 * 256) //10.5.7: c)
{
byte[] bytes = buffer.ReadBytes(2);
Value = baseNum + bytes[0] * 256 + bytes[1];
}
else //10.5.7: d)
{
Asn1Integer len = new Asn1Integer { Constraints = new Asn1IntegerBound { Min = 1, Max = 4 } };
len.PerDecode(buffer);
byte[] bytes = buffer.ReadBytes((int)len.Value);
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(bytes);
}
}
}
/// <summary>
/// Decodes the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
long baseNum = (Constraints != null && Constraints.HasMin ? Constraints.Min : 0);
//Ref. X.691: 10.5.2
if (Range == null) //range is equal to null
{
byte length = buffer.ReadByte();
if (length == 0)
{
Value = baseNum;
return;
}
byte[] result = buffer.ReadBytes(length);
if (Constraints == null || !Constraints.HasMin)
{
//No base
Value = IntegerDecoding(result);
}
else
{
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(result);
}
}
else
{
if (Range == 1)
{
Value = Constraints.Min;
}
else if (Range <= 255) //10.5.7: a)
{
int bitFieldSize = 1;
while (Range > (1 << (bitFieldSize)))
{
bitFieldSize++;
}
bool[] result = buffer.ReadBits(bitFieldSize);
byte offset = 0;
foreach (var b in result)
{
offset <<= 1;
offset += (byte)(b ? 1 : 0);
}
Value = baseNum + offset;
}
else if (Range == 256) //10.5.7: b)
{
Value = baseNum + buffer.ReadByte();
}
else if (Range <= 256 * 256) //10.5.7: c)
{
byte[] bytes = buffer.ReadBytes(2);
Value = baseNum + bytes[0] * 256 + bytes[1];
}
else //10.5.7: d)
{
Asn1Integer len = new Asn1Integer {
Constraints = new Asn1IntegerBound {
Min = 1, Max = 4
}
};
len.PerDecode(buffer);
byte[] bytes = buffer.ReadBytes((int)len.Value);
Value = baseNum + NonNegativeBinaryIntegerPerDeocde(bytes);
}
}
}
/// <summary>
/// Decodes the content of the object by PER.
/// </summary>
/// <param name="buffer">A buffer that contains a PER encoding result.</param>
/// <param name="aligned">Indicating whether the PER decoding is aligned.</param>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
int optionalFieldsCount = 0;
foreach (var v in fieldsMetaData)
{
if (v.Optional)
{
optionalFieldsCount++;
}
}
if (optionalFieldsCount >= 64 * 1024) //64k
{
throw new NotImplementedException("More than 64K optional fields are not supported yet.");
//Ref. X.691: 18.3
}
bool[] bitMap = buffer.ReadBits(optionalFieldsCount);
Asn1Object[] decodingResult = FieldsTypeInstances;
int curOptionalFlagIndex = 0; //index in bitMap
for (int i = 0; i < decodingResult.Length; i++)
{
if (fieldsMetaData[i].Optional == false ||
fieldsMetaData[i].Optional && bitMap[curOptionalFlagIndex++])
{
decodingResult[i].PerDecode(buffer, aligned);
}
else
{
//fieldOptionalFlags[i] equals to true and bitMap[curOptionalFlagIndex] equals to false.
decodingResult[i] = null;
}
}
for (int i = 0; i < decodingResult.Length; i++)
{
fieldsMetaData[i].ValueInOutObject = decodingResult[i];
}
}