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using System;
using System.IO;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1
{
internal class DLSequence
: DerSequence
{
internal static new readonly DLSequence Empty = new DLSequence();
internal static new DLSequence FromVector(Asn1EncodableVector elementVector)
{
return elementVector.Count < 1 ? Empty : new DLSequence(elementVector);
}
/**
* create an empty sequence
*/
internal DLSequence()
: base()
{
}
/**
* create a sequence containing one object
*/
internal DLSequence(Asn1Encodable element)
: base(element)
{
}
internal DLSequence(params Asn1Encodable[] elements)
: base(elements)
{
}
/**
* create a sequence containing a vector of objects.
*/
internal DLSequence(Asn1EncodableVector elementVector)
: base(elementVector)
{
}
internal DLSequence(Asn1Encodable[] elements, bool clone)
: base(elements, clone)
{
}
internal override int EncodedLength(bool withID)
{
throw Platform.CreateNotImplementedException("DLSequence.EncodedLength");
}
internal override void Encode(Asn1OutputStream asn1Out, bool withID)
{
if (asn1Out.IsDer)
{
base.Encode(asn1Out, withID);
return;
}
if (Count < 1)
{
asn1Out.WriteEncodingDL(withID, Asn1Tags.Constructed | Asn1Tags.Sequence, Asn1OctetString.EmptyOctets);
return;
}
// TODO Intermediate buffer could be avoided if we could calculate expected length
MemoryStream bOut = new MemoryStream();
// TODO Once DLOutputStream exists, this should create one
Asn1OutputStream dOut = Asn1OutputStream.Create(bOut);
dOut.WriteElements(elements);
dOut.FlushInternal();
#if PORTABLE
byte[] bytes = bOut.ToArray();
int length = bytes.Length;
#else
byte[] bytes = bOut.GetBuffer();
int length = (int)bOut.Position;
#endif
asn1Out.WriteEncodingDL(withID, Asn1Tags.Constructed | Asn1Tags.Sequence, bytes, 0, length);
Platform.Dispose(dOut);
}
internal override Asn1Set ToAsn1Set()
{
return new DLSet(false, elements);
}
}
}
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