| /* |
| * 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.mnemonic; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * an output Stream that is backed by a in-memory ByteBuffer. |
| * |
| * |
| */ |
| public class ByteBufferBackedOutputStream extends OutputStream { |
| |
| private ByteBuffer buf; |
| |
| /** |
| * accept a ByteBuffer to store external data, the capacity of it could be |
| * extended at will. |
| * |
| * @param buf |
| * specify a ByteBuffer object that is used to store external data to |
| * its backed buffer |
| * |
| */ |
| public ByteBufferBackedOutputStream(ByteBuffer buf) { |
| this.buf = buf; |
| } |
| |
| /** |
| * write an integer value to backed buffer. |
| * |
| * @param b |
| * specify an integer value to be written |
| */ |
| public void write(int b) throws IOException { |
| buf.put((byte) b); |
| } |
| |
| /** |
| * write an array of bytes to a specified range of backed buffer |
| * |
| * @param bytes |
| * specify a byte array to write |
| * |
| * @param off |
| * specify the offset of backed buffer where is start point to be |
| * written |
| * |
| * @param len |
| * specify the length of bytes to be written |
| */ |
| public void write(byte[] bytes, int off, int len) throws IOException { |
| buf.put(bytes, off, len); |
| } |
| |
| } |