| /** |
| * 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.xml.security.utils; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * A class that buffers without synchronizing its methods |
| * @author raul |
| */ |
| public class UnsyncBufferedOutputStream extends OutputStream { |
| static final int size = 8*1024; |
| |
| private int pointer = 0; |
| private final OutputStream out; |
| |
| private final byte[] buf; |
| |
| /** |
| * Creates a buffered output stream without synchronization |
| * @param out the outputstream to buffer |
| */ |
| public UnsyncBufferedOutputStream(OutputStream out) { |
| buf = new byte[size]; |
| this.out = out; |
| } |
| |
| /** @inheritDoc */ |
| public void write(byte[] arg0) throws IOException { |
| write(arg0, 0, arg0.length); |
| } |
| |
| /** @inheritDoc */ |
| public void write(byte[] arg0, int arg1, int len) throws IOException { |
| int newLen = pointer+len; |
| if (newLen > size) { |
| flushBuffer(); |
| if (len > size) { |
| out.write(arg0, arg1,len); |
| return; |
| } |
| newLen = len; |
| } |
| System.arraycopy(arg0, arg1, buf, pointer, len); |
| pointer = newLen; |
| } |
| |
| private void flushBuffer() throws IOException { |
| if (pointer > 0) { |
| out.write(buf, 0, pointer); |
| } |
| pointer = 0; |
| |
| } |
| |
| /** @inheritDoc */ |
| public void write(int arg0) throws IOException { |
| if (pointer >= size) { |
| flushBuffer(); |
| } |
| buf[pointer++] = (byte)arg0; |
| |
| } |
| |
| /** @inheritDoc */ |
| public void flush() throws IOException { |
| flushBuffer(); |
| out.flush(); |
| } |
| |
| /** @inheritDoc */ |
| public void close() throws IOException { |
| flush(); |
| out.close(); |
| } |
| |
| } |