init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Bcpg/UserAttributeSubpacket.cs

@@ -0,0 +1,79 @@
+using System.IO;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Bcpg;
+
+public class UserAttributeSubpacket
+{
+	internal readonly UserAttributeSubpacketTag type;
+
+	private readonly bool longLength;
+
+	protected readonly byte[] data;
+
+	public virtual UserAttributeSubpacketTag SubpacketType => type;
+
+	protected internal UserAttributeSubpacket(UserAttributeSubpacketTag type, byte[] data)
+		: this(type, forceLongLength: false, data)
+	{
+	}
+
+	protected internal UserAttributeSubpacket(UserAttributeSubpacketTag type, bool forceLongLength, byte[] data)
+	{
+		this.type = type;
+		longLength = forceLongLength;
+		this.data = data;
+	}
+
+	public virtual byte[] GetData()
+	{
+		return data;
+	}
+
+	public virtual void Encode(Stream os)
+	{
+		int num = data.Length + 1;
+		if (num < 192 && !longLength)
+		{
+			os.WriteByte((byte)num);
+		}
+		else if (num <= 8383 && !longLength)
+		{
+			num -= 192;
+			os.WriteByte((byte)(((num >> 8) & 0xFF) + 192));
+			os.WriteByte((byte)num);
+		}
+		else
+		{
+			os.WriteByte(byte.MaxValue);
+			os.WriteByte((byte)(num >> 24));
+			os.WriteByte((byte)(num >> 16));
+			os.WriteByte((byte)(num >> 8));
+			os.WriteByte((byte)num);
+		}
+		os.WriteByte((byte)type);
+		os.Write(data, 0, data.Length);
+	}
+
+	public override bool Equals(object obj)
+	{
+		if (obj == this)
+		{
+			return true;
+		}
+		if (!(obj is UserAttributeSubpacket userAttributeSubpacket))
+		{
+			return false;
+		}
+		if (type == userAttributeSubpacket.type)
+		{
+			return Arrays.AreEqual(data, userAttributeSubpacket.data);
+		}
+		return false;
+	}
+
+	public override int GetHashCode()
+	{
+		return type.GetHashCode() ^ Arrays.GetHashCode(data);
+	}
+}