/// <summary>Return the next object in the stream, or null if the end is reached.</summary>
/// <exception cref="IOException">On a parse error</exception>
public PgpObject NextPgpObject()
{
PacketTag tag = bcpgIn.NextPacketTag();
if ((int)tag == -1)
{
return(null);
}
switch (tag)
{
case PacketTag.Signature:
{
IList l = Platform.CreateArrayList();
while (bcpgIn.NextPacketTag() == PacketTag.Signature)
{
try
{
l.Add(new PgpSignature(bcpgIn));
}
catch (PgpException e)
{
throw new IOException("can't create signature object: " + e);
}
}
PgpSignature[] sigs = new PgpSignature[l.Count];
for (int i = 0; i < l.Count; ++i)
{
sigs[i] = (PgpSignature)l[i];
}
return(new PgpSignatureList(sigs));
}
case PacketTag.SecretKey:
try
{
return(new PgpSecretKeyRing(bcpgIn));
}
catch (PgpException e)
{
throw new IOException("can't create secret key object: " + e);
}
case PacketTag.PublicKey:
return(new PgpPublicKeyRing(bcpgIn));
// TODO Make PgpPublicKey a PgpObject or return a PgpPublicKeyRing
// case PacketTag.PublicSubkey:
// return PgpPublicKeyRing.ReadSubkey(bcpgIn);
case PacketTag.CompressedData:
return(new PgpCompressedData(bcpgIn));
case PacketTag.LiteralData:
return(new PgpLiteralData(bcpgIn));
case PacketTag.PublicKeyEncryptedSession:
case PacketTag.SymmetricKeyEncryptedSessionKey:
return(new PgpEncryptedDataList(bcpgIn));
case PacketTag.OnePassSignature:
{
IList l = Platform.CreateArrayList();
while (bcpgIn.NextPacketTag() == PacketTag.OnePassSignature)
{
try
{
l.Add(new PgpOnePassSignature(bcpgIn));
}
catch (PgpException e)
{
throw new IOException("can't create one pass signature object: " + e);
}
}
PgpOnePassSignature[] sigs = new PgpOnePassSignature[l.Count];
for (int i = 0; i < l.Count; ++i)
{
sigs[i] = (PgpOnePassSignature)l[i];
}
return(new PgpOnePassSignatureList(sigs));
}
case PacketTag.Marker:
return(new PgpMarker(bcpgIn));
case PacketTag.Experimental1:
case PacketTag.Experimental2:
case PacketTag.Experimental3:
case PacketTag.Experimental4:
return(new PgpExperimental(bcpgIn));
}
throw new IOException("unknown object in stream " + bcpgIn.NextPacketTag());
}
public PgpOnePassSignatureList(
PgpOnePassSignature sig)
{
this.sigs = new PgpOnePassSignature[] { sig };
}