beroctetstringgenerator.java

java 文件下载器。可自定义

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   BEROctetStringGenerator.java

package org.bouncycastle.asn1;

import java.io.IOException;
import java.io.OutputStream;

// Referenced classes of package org.bouncycastle.asn1:
//			BERGenerator, DEROctetString

public class BEROctetStringGenerator extends BERGenerator
{
	private class BufferedBEROctetStream extends OutputStream
	{

		private byte _buf[];
		private int _off;
		final BEROctetStringGenerator this$0;

		public void write(int b)
			throws IOException
		{
			_buf[_off++] = (byte)b;
			if (_off == _buf.length)
			{
				_out.write((new DEROctetString(_buf)).getEncoded());
				_off = 0;
			}
		}

		public void write(byte b[], int off, int len)
			throws IOException
		{
			do
			{
				if (len <= 0)
					break;
				int numToCopy = Math.min(len, _buf.length - _off);
				System.arraycopy(b, off, _buf, _off, numToCopy);
				_off += numToCopy;
				if (_off < _buf.length)
					break;
				_out.write((new DEROctetString(_buf)).getEncoded());
				_off = 0;
				off += numToCopy;
				len -= numToCopy;
			} while (true);
		}

		public void close()
			throws IOException
		{
			if (_off != 0)
			{
				byte bytes[] = new byte[_off];
				System.arraycopy(_buf, 0, bytes, 0, _off);
				_out.write((new DEROctetString(bytes)).getEncoded());
			}
			writeBEREnd();
		}

		BufferedBEROctetStream(byte buf[])
		{
			this$0 = BEROctetStringGenerator.this;
			super();
			_buf = buf;
			_off = 0;
		}
	}


	public BEROctetStringGenerator(OutputStream out)
		throws IOException
	{
		super(out);
		writeBERHeader(36);
	}

	public BEROctetStringGenerator(OutputStream out, int tagNo, boolean isExplicit)
		throws IOException
	{
		super(out, tagNo, isExplicit);
		writeBERHeader(36);
	}

	public OutputStream getOctetOutputStream()
	{
		return getOctetOutputStream(new byte[1000]);
	}

	public OutputStream getOctetOutputStream(byte buf[])
	{
		return new BufferedBEROctetStream(buf);
	}
}