1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/impl/io/IdentityOutputStream.java $ 3 * $Revision: 560343 $ 4 * $Date: 2007-07-27 11:18:19 -0700 (Fri, 27 Jul 2007) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * ==================================================================== 24 * 25 * This software consists of voluntary contributions made by many 26 * individuals on behalf of the Apache Software Foundation. For more 27 * information on the Apache Software Foundation, please see 28 * <http://www.apache.org/>. 29 * 30 */ 31 32 package org.apache.http.impl.io; 33 34 import java.io.IOException; 35 import java.io.OutputStream; 36 37 import org.apache.http.io.SessionOutputBuffer; 38 39 /** 40 * A stream for writing with an "identity" transport encoding. 41 * 42 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a> 43 * 44 * @version $Revision: 560343 $ 45 * 46 * @since 4.0 47 */ 48 public class IdentityOutputStream extends OutputStream { 49 50 /** 51 * Wrapped session output buffer. 52 */ 53 private final SessionOutputBuffer out; 54 55 /** True if the stream is closed. */ 56 private boolean closed = false; 57 IdentityOutputStream(final SessionOutputBuffer out)58 public IdentityOutputStream(final SessionOutputBuffer out) { 59 super(); 60 if (out == null) { 61 throw new IllegalArgumentException("Session output buffer may not be null"); 62 } 63 this.out = out; 64 } 65 66 /** 67 * <p>Does not close the underlying socket output.</p> 68 * 69 * @throws IOException If an I/O problem occurs. 70 */ close()71 public void close() throws IOException { 72 if (!this.closed) { 73 this.closed = true; 74 this.out.flush(); 75 } 76 } 77 flush()78 public void flush() throws IOException { 79 this.out.flush(); 80 } 81 write(byte[] b, int off, int len)82 public void write(byte[] b, int off, int len) throws IOException { 83 if (this.closed) { 84 throw new IOException("Attempted write to closed stream."); 85 } 86 this.out.write(b, off, len); 87 } 88 write(byte[] b)89 public void write(byte[] b) throws IOException { 90 write(b, 0, b.length); 91 } 92 write(int b)93 public void write(int b) throws IOException { 94 if (this.closed) { 95 throw new IOException("Attempted write to closed stream."); 96 } 97 this.out.write(b); 98 } 99 100 } 101