14fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy/* 24fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Licensed to the Apache Software Foundation (ASF) under one or more 34fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * contributor license agreements. See the NOTICE file distributed with 44fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * this work for additional information regarding copyright ownership. 54fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * The ASF licenses this file to You under the Apache License, Version 2.0 64fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * (the "License"); you may not use this file except in compliance with 74fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * the License. You may obtain a copy of the License at 84fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 94fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * http://www.apache.org/licenses/LICENSE-2.0 104fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 114fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Unless required by applicable law or agreed to in writing, software 124fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * distributed under the License is distributed on an "AS IS" BASIS, 134fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 144fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * See the License for the specific language governing permissions and 154fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * limitations under the License. 164fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 174fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedypackage org.apache.commons.io.output; 184fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 194fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedyimport java.io.FilterOutputStream; 204fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedyimport java.io.IOException; 214fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedyimport java.io.OutputStream; 224fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 234fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy/** 244fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * A Proxy stream which acts as expected, that is it passes the method 254fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * calls on to the proxied stream and doesn't change which methods are 264fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * being called. It is an alternative base class to FilterOutputStream 274fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * to increase reusability. 284fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 294fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @author Stephen Colebourne 304fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @version $Id: ProxyOutputStream.java 610010 2008-01-08 14:50:59Z niallp $ 314fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 324fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedypublic class ProxyOutputStream extends FilterOutputStream { 334fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 344fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 354fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Constructs a new ProxyOutputStream. 364fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 374fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param proxy the OutputStream to delegate to 384fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 394fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public ProxyOutputStream(OutputStream proxy) { 404fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy super(proxy); 414fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy // the proxy is stored in a protected superclass variable named 'out' 424fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 434fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 444fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 454fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Invokes the delegate's <code>write(int)</code> method. 464fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param idx the byte to write 474fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @throws IOException if an I/O error occurs 484fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 494fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public void write(int idx) throws IOException { 504fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy out.write(idx); 514fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 524fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 534fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 544fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Invokes the delegate's <code>write(byte[])</code> method. 554fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param bts the bytes to write 564fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @throws IOException if an I/O error occurs 574fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 584fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public void write(byte[] bts) throws IOException { 594fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy out.write(bts); 604fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 614fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 624fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 634fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Invokes the delegate's <code>write(byte[])</code> method. 644fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param bts the bytes to write 654fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param st The start offset 664fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param end The number of bytes to write 674fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @throws IOException if an I/O error occurs 684fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 694fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public void write(byte[] bts, int st, int end) throws IOException { 704fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy out.write(bts, st, end); 714fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 724fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 734fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 744fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Invokes the delegate's <code>flush()</code> method. 754fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @throws IOException if an I/O error occurs 764fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 774fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public void flush() throws IOException { 784fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy out.flush(); 794fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 804fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 814fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 824fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Invokes the delegate's <code>close()</code> method. 834fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @throws IOException if an I/O error occurs 844fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 854fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public void close() throws IOException { 864fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy out.close(); 874fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 884fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 894fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy} 90