| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.axiom.util.base64; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * {@link OutputStream} implementation that writes base64 encoded data to another |
| * {@link OutputStream} using ASCII encoding. This class internally buffers the data before writing |
| * it to the underlying stream. |
| */ |
| public class Base64EncodingOutputStream extends AbstractBase64EncodingOutputStream { |
| private final OutputStream parent; |
| private final byte[] buffer; |
| private int len; |
| |
| /** |
| * Constructor. |
| * |
| * @param parent the stream to write the encoded data to |
| * @param bufferSize the buffer size to use |
| */ |
| public Base64EncodingOutputStream(OutputStream parent, int bufferSize) { |
| this.parent = parent; |
| buffer = new byte[bufferSize]; |
| } |
| |
| /** |
| * Constructor that sets the buffer size to its default value of 4096 characters. |
| * |
| * @param parent the stream to write the encoded data to |
| */ |
| public Base64EncodingOutputStream(OutputStream parent) { |
| this(parent, 4096); |
| } |
| |
| @Override |
| protected void doWrite(byte[] b) throws IOException { |
| if (buffer.length - len < 4) { |
| flushBuffer(); |
| } |
| System.arraycopy(b, 0, buffer, len, 4); |
| len += 4; |
| } |
| |
| @Override |
| protected void flushBuffer() throws IOException { |
| parent.write(buffer, 0, len); |
| len = 0; |
| } |
| |
| @Override |
| protected void doFlush() throws IOException { |
| parent.flush(); |
| } |
| |
| @Override |
| protected void doClose() throws IOException { |
| parent.close(); |
| } |
| } |