| /* |
| * 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.thrift.transport; |
| |
| import org.apache.thrift.TByteArrayOutputStream; |
| import java.io.UnsupportedEncodingException; |
| |
| /** |
| * Memory buffer-based implementation of the TTransport interface. |
| * |
| */ |
| public class TMemoryBuffer extends TTransport { |
| |
| /** |
| * |
| */ |
| public TMemoryBuffer(int size) { |
| arr_ = new TByteArrayOutputStream(size); |
| } |
| |
| @Override |
| public boolean isOpen() { |
| return true; |
| } |
| |
| @Override |
| public void open() { |
| /* Do nothing */ |
| } |
| |
| @Override |
| public void close() { |
| /* Do nothing */ |
| } |
| |
| @Override |
| public int read(byte[] buf, int off, int len) { |
| byte[] src = arr_.get(); |
| int amtToRead = (len > arr_.len() - pos_ ? arr_.len() - pos_ : len); |
| if (amtToRead > 0) { |
| System.arraycopy(src, pos_, buf, off, amtToRead); |
| pos_ += amtToRead; |
| } |
| return amtToRead; |
| } |
| |
| @Override |
| public void write(byte[] buf, int off, int len) { |
| arr_.write(buf, off, len); |
| } |
| |
| /** |
| * Output the contents of the memory buffer as a String, using the supplied |
| * encoding |
| * @param enc the encoding to use |
| * @return the contents of the memory buffer as a String |
| */ |
| public String toString(String enc) throws UnsupportedEncodingException { |
| return arr_.toString(enc); |
| } |
| |
| public String inspect() { |
| String buf = ""; |
| byte[] bytes = arr_.toByteArray(); |
| for (int i = 0; i < bytes.length; i++) { |
| buf += (pos_ == i ? "==>" : "" ) + Integer.toHexString(bytes[i] & 0xff) + " "; |
| } |
| return buf; |
| } |
| |
| // The contents of the buffer |
| private TByteArrayOutputStream arr_; |
| |
| // Position to read next byte from |
| private int pos_; |
| |
| public int length() { |
| return arr_.size(); |
| } |
| } |
| |