Base64BIOFilter.java

/***** BEGIN LICENSE BLOCK *****
 * Version: EPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Eclipse Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/epl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2008 Ola Bini <ola.bini@gmail.com>
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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package org.jruby.ext.openssl.impl;

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

/**
 *
 * @author <a href="mailto:ola.bini@gmail.com">Ola Bini</a>
 */
public class Base64BIOFilter extends BIOFilter {
    private OutputStream nextOutput;
    private InputStream nextInput;

    @Override
    public int write(byte[] out, int offset, int len) throws IOException {
        this.nextOutput.write(out, offset, len);
        return len;
    }

    @Override
    public int read(byte[] into, int offset, int len) throws IOException {
        int read = this.nextInput.read(into, offset, len);
        if(read == -1) {
            return 0;
        }
        return read;
    }

    @Override
    public void flush() throws IOException {
        this.nextOutput.flush();
    }

    @Override
    public BIO push(BIO bio) {
        BIO ret = super.push(bio);
        this.nextOutput = new Base64.OutputStream(BIO.asOutputStream(this.nextBio));
        this.nextInput = new Base64.InputStream(BIO.asInputStream(this.nextBio));
        return ret;
    }

    @Override
    public int getType() {
        return TYPE_BASE64;
    }
}// Base64BIOFilter