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using System;
using System.Collections;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1
{
/**
* BER TaggedObject - in ASN.1 notation this is any object preceded by
* a [n] where n is some number - these are assumed to follow the construction
* rules (as with sequences).
*/
public class BerTaggedObject
: DerTaggedObject
{
/**
* @param tagNo the tag number for this object.
* @param obj the tagged object.
*/
public BerTaggedObject(
int tagNo,
Asn1Encodable obj)
: base(tagNo, obj)
{
}
/**
* @param explicitly true if an explicitly tagged object.
* @param tagNo the tag number for this object.
* @param obj the tagged object.
*/
public BerTaggedObject(
bool explicitly,
int tagNo,
Asn1Encodable obj)
: base(explicitly, tagNo, obj)
{
}
/**
* create an implicitly tagged object that contains a zero
* length sequence.
*/
public BerTaggedObject(
int tagNo)
: base(false, tagNo, BerSequence.Empty)
{
}
internal override void Encode(
DerOutputStream derOut)
{
if (derOut is Asn1OutputStream || derOut is BerOutputStream)
{
derOut.WriteTag((byte)(Asn1Tags.Constructed | Asn1Tags.Tagged), tagNo);
derOut.WriteByte(0x80);
if (!IsEmpty())
{
if (!explicitly)
{
IEnumerable eObj;
if (obj is Asn1OctetString)
{
if (obj is BerOctetString)
{
eObj = (BerOctetString) obj;
}
else
{
Asn1OctetString octs = (Asn1OctetString)obj;
eObj = new BerOctetString(octs.GetOctets());
}
}
else if (obj is Asn1Sequence)
{
eObj = (Asn1Sequence) obj;
}
else if (obj is Asn1Set)
{
eObj = (Asn1Set) obj;
}
else
{
throw Platform.CreateNotImplementedException(obj.GetType().Name);
}
foreach (Asn1Encodable o in eObj)
{
derOut.WriteObject(o);
}
}
else
{
derOut.WriteObject(obj);
}
}
derOut.WriteByte(0x00);
derOut.WriteByte(0x00);
}
else
{
base.Encode(derOut);
}
}
}
}
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