BerGenerator
using Org.BouncyCastle.Utilities.IO;
using System.IO;
namespace Org.BouncyCastle.Asn1
{
public abstract class BerGenerator : Asn1Generator
{
private bool _tagged;
private bool _isExplicit;
private int _tagNo;
protected BerGenerator(Stream outStream)
: base(outStream)
{
}
protected BerGenerator(Stream outStream, int tagNo, bool isExplicit)
: base(outStream)
{
_tagged = true;
_isExplicit = isExplicit;
_tagNo = tagNo;
}
protected override void Finish()
{
WriteBerEnd();
}
public override void AddObject(Asn1Encodable obj)
{
obj.EncodeTo(base.OutStream);
}
public override void AddObject(Asn1Object obj)
{
obj.EncodeTo(base.OutStream);
}
public override Stream GetRawOutputStream()
{
return base.OutStream;
}
private void WriteHdr(int tag)
{
base.OutStream.WriteByte((byte)tag);
base.OutStream.WriteByte(128);
}
protected void WriteBerHeader(int tag)
{
if (_tagged) {
int num = _tagNo | 128;
if (_isExplicit) {
WriteHdr(num | 32);
WriteHdr(tag);
} else if ((tag & 32) != 0) {
WriteHdr(num | 32);
} else {
WriteHdr(num);
}
} else
WriteHdr(tag);
}
protected void WriteBerBody(Stream contentStream)
{
Streams.PipeAll(contentStream, base.OutStream);
}
protected void WriteBerEnd()
{
base.OutStream.WriteByte(0);
base.OutStream.WriteByte(0);
if (_tagged && _isExplicit) {
base.OutStream.WriteByte(0);
base.OutStream.WriteByte(0);
}
}
}
}