init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/BerGenerator.cs

@@ -0,0 +1,88 @@
+using System.IO;
+using Org.BouncyCastle.Utilities.IO;
+
+namespace Org.BouncyCastle.Asn1;
+
+public class BerGenerator : Asn1Generator
+{
+	private bool _tagged = false;
+
+	private bool _isExplicit;
+
+	private int _tagNo;
+
+	protected BerGenerator(Stream outStream)
+		: base(outStream)
+	{
+	}
+
+	public BerGenerator(Stream outStream, int tagNo, bool isExplicit)
+		: base(outStream)
+	{
+		_tagged = true;
+		_isExplicit = isExplicit;
+		_tagNo = tagNo;
+	}
+
+	public override void AddObject(Asn1Encodable obj)
+	{
+		new BerOutputStream(base.Out).WriteObject(obj);
+	}
+
+	public override Stream GetRawOutputStream()
+	{
+		return base.Out;
+	}
+
+	public override void Close()
+	{
+		WriteBerEnd();
+	}
+
+	private void WriteHdr(int tag)
+	{
+		base.Out.WriteByte((byte)tag);
+		base.Out.WriteByte(128);
+	}
+
+	protected void WriteBerHeader(int tag)
+	{
+		if (_tagged)
+		{
+			int num = _tagNo | 0x80;
+			if (_isExplicit)
+			{
+				WriteHdr(num | 0x20);
+				WriteHdr(tag);
+			}
+			else if ((tag & 0x20) != 0)
+			{
+				WriteHdr(num | 0x20);
+			}
+			else
+			{
+				WriteHdr(num);
+			}
+		}
+		else
+		{
+			WriteHdr(tag);
+		}
+	}
+
+	protected void WriteBerBody(Stream contentStream)
+	{
+		Streams.PipeAll(contentStream, base.Out);
+	}
+
+	protected void WriteBerEnd()
+	{
+		base.Out.WriteByte(0);
+		base.Out.WriteByte(0);
+		if (_tagged && _isExplicit)
+		{
+			base.Out.WriteByte(0);
+			base.Out.WriteByte(0);
+		}
+	}
+}