init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Utilities/IO/BaseInputStream.cs

@@ -0,0 +1,87 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Utilities.IO;
+
+public abstract class BaseInputStream : Stream
+{
+	private bool closed;
+
+	public sealed override bool CanRead => !closed;
+
+	public sealed override bool CanSeek => false;
+
+	public sealed override bool CanWrite => false;
+
+	public sealed override long Length
+	{
+		get
+		{
+			throw new NotSupportedException();
+		}
+	}
+
+	public sealed override long Position
+	{
+		get
+		{
+			throw new NotSupportedException();
+		}
+		set
+		{
+			throw new NotSupportedException();
+		}
+	}
+
+	public override void Close()
+	{
+		closed = true;
+		base.Close();
+	}
+
+	public sealed override void Flush()
+	{
+	}
+
+	public override int Read(byte[] buffer, int offset, int count)
+	{
+		int num = offset;
+		try
+		{
+			int num2 = offset + count;
+			while (num < num2)
+			{
+				int num3 = ReadByte();
+				if (num3 != -1)
+				{
+					buffer[num++] = (byte)num3;
+					continue;
+				}
+				break;
+			}
+		}
+		catch (IOException)
+		{
+			if (num == offset)
+			{
+				throw;
+			}
+		}
+		return num - offset;
+	}
+
+	public sealed override long Seek(long offset, SeekOrigin origin)
+	{
+		throw new NotSupportedException();
+	}
+
+	public sealed override void SetLength(long value)
+	{
+		throw new NotSupportedException();
+	}
+
+	public sealed override void Write(byte[] buffer, int offset, int count)
+	{
+		throw new NotSupportedException();
+	}
+}