/// <summary>
/// Encodes the content of the object by PER.
/// </summary>
/// <param name="buffer">A buffer to which the encoding result will be written.</param>
/// <remarks>Length is included.</remarks>
protected override void ValuePerEncode(IAsn1PerEncodingBuffer buffer)
{
Asn1StandardProcedure.PerEncodeArray(buffer, Elements, (encodingBuffer, obj) =>
{
obj.PerEncode(encodingBuffer);
},
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>
/// <remarks>Length is included.</remarks>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
Elements = Asn1StandardProcedure.PerDecodeArray(buffer, decodingBuffer =>
{
T curObj = new T();
curObj.PerDecode(buffer);
return(curObj);
},
Constraint != null && Constraint.HasMinSize ? Constraint.MinSize : (long?)null, Constraint != null && Constraint.HasMaxSize ? Constraint.MaxSize : (long?)null);
}
/// <summary>
/// Encodes the content of the object by PER.
/// </summary>
/// <param name="buffer">A buffer to which the encoding result will be written.</param>
/// <remarks>Length is included.</remarks>
protected override void ValuePerEncode(IAsn1PerEncodingBuffer buffer)
{
Asn1StandardProcedure.PerEncodeArray(buffer, Value.ToCharArray(),
(encodingBuffer, b) =>
{
byte[] result = Encoding.BigEndianUnicode.GetBytes("" + b);
encodingBuffer.WriteBytes(result);
}
, Constraint != null && Constraint.HasMinSize ? Constraint.MinSize : (long?)null, Constraint != null && Constraint.HasMaxSize ? Constraint.MaxSize : (long?)null,
true);
}
/// <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)
{
char[] result = Asn1StandardProcedure.PerDecodeArray <char>(buffer,
decodingBuffer =>
{
byte[] encodingResult = buffer.ReadBytes(2);
string s = Encoding.BigEndianUnicode.GetString(encodingResult);
return(s[0]);
},
Constraint != null && Constraint.HasMinSize ? Constraint.MinSize : (long?)null, Constraint != null && Constraint.HasMaxSize ? Constraint.MaxSize : (long?)null,
true);
Value = new string(result);
}
/// <summary>
/// Check if tag from buffer is match with input Asn1Tag
/// </summary>
/// <param name="buffer">decode buffer</param>
/// <param name="tag">compare Asn1Tag</param>
/// <param name="length">Tag Length</param>
/// <param name="IsForward">If true Postion + 1, otherwise not change Postion</param>
/// <returns>Tag from Buffer is match with input Tag</returns>
public virtual bool IsTagMatch(IAsn1DecodingBuffer buffer, Asn1Tag tag, out int length, bool IsForward = false)
{
length = 0;
if (buffer.IsNomoreData())
{
return(false);
}
byte tagByte = Asn1StandardProcedure.GetEncodeTag(tag);
byte bufferTagByte = IsForward ? buffer.ReadByte() : buffer.PeekByte();
length = IsForward ? 1 : 0;
return(tagByte == bufferTagByte);
}
/// <summary>
/// Encodes the content of the object by PER.
/// </summary>
/// <param name="buffer">A buffer to which the encoding result will be written.</param>
/// <remarks>Length is included.</remarks>
protected override void ValuePerEncode(IAsn1PerEncodingBuffer buffer)
{
if (Value[0] * 40 + Value[1] >= 128)
{
throw new NotImplementedException("Ojbect Identifier with first element greater than 127 is not implemented.");
//Len will be minus 1 while encoding.
}
var res = EncodeIdentifier(Value);
Asn1StandardProcedure.PerEncodeArray <byte>(buffer, res,
(encodingBuffer, b) =>
{
encodingBuffer.WriteByte(b);
});
}
/// <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>
/// <remarks>Length is included.</remarks>
protected override void ValuePerDecode(IAsn1DecodingBuffer buffer, bool aligned = true)
{
byte[] res = Asn1StandardProcedure.PerDecodeArray(buffer, decodingBuffer => (decodingBuffer.ReadByte()));
Value = DecodeIdentifiers(res);
}
/// <summary>
/// Decodes a tag from the buffer.
/// </summary>
/// <param name="buffer"></param>
/// <param name="tag"></param>
/// <returns>The number of the bytes consumed in the buffer to decode the tag.</returns>
/// <remarks>Override this method in a user-defined class only if the procedure is not applicable in some special scenarios.</remarks>
protected virtual int TagBerDecode(IAsn1DecodingBuffer buffer, out Asn1Tag tag)
{
return(Asn1StandardProcedure.TagBerDecode(buffer, out tag));
}
/// <summary>
/// Encodes a tag to the buffer.
/// </summary>
/// <param name="buffer"></param>
/// <param name="tag"></param>
/// <returns>The length of the encoding result.</returns>
/// <remarks>Override this method in a user-defined class only if the procedure is not applicable in some special scenarios.</remarks>
protected virtual int TagBerEncode(IAsn1BerEncodingBuffer buffer, Asn1Tag tag)
{
return(Asn1StandardProcedure.TagBerEncode(buffer, tag));
}
/// <summary>
/// Reads/decodes a length from the buffer.
/// </summary>
/// <param name="buffer">A buffer that stores a BER encoding result.</param>
/// <param name="decodedLength">The decoded length will be retrieved by this param.</param>
/// <returns>The number of the bytes consumed in the buffer to decode the length.</returns>
/// <remarks>
/// This method are implementd by Asn1StandardBerProcedure.LengthBerDecode.
/// Override this method in a user-defined class only if the standard procedure is not applicable in some special scenarios.
/// </remarks>
protected virtual int LengthBerDecode(IAsn1DecodingBuffer buffer, out int decodedLength)
{
return(Asn1StandardProcedure.LengthBerDecode(buffer, out decodedLength));
}
/// <summary>
/// Encodes a length to the buffer.
/// </summary>
/// <param name="buffer"></param>
/// <param name="length">The length to be written to the buffer.</param>
/// <returns>The length of "the encoded length's encoding result".</returns>
/// <remarks>
/// This method are implementd by Asn1StandardBerProcedure.LengthBerEncode.
/// Override this method in a user-defined class only if the standard procedure is not applicable in some special scenarios.
/// </remarks>
protected virtual int LengthBerEncode(IAsn1BerEncodingBuffer buffer, int length)
{
return(Asn1StandardProcedure.LengthBerEncode(buffer, length));
}
