1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/impl/io/AbstractMessageWriter.java $ 3 * $Revision: 569673 $ 4 * $Date: 2007-08-25 06:58:51 -0700 (Sat, 25 Aug 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.util.Iterator; 36 37 import org.apache.http.Header; 38 import org.apache.http.HttpException; 39 import org.apache.http.HttpMessage; 40 import org.apache.http.io.HttpMessageWriter; 41 import org.apache.http.io.SessionOutputBuffer; 42 import org.apache.http.message.LineFormatter; 43 import org.apache.http.message.BasicLineFormatter; 44 import org.apache.http.params.HttpParams; 45 import org.apache.http.util.CharArrayBuffer; 46 47 public abstract class AbstractMessageWriter implements HttpMessageWriter { 48 49 protected final SessionOutputBuffer sessionBuffer; 50 protected final CharArrayBuffer lineBuf; 51 protected final LineFormatter lineFormatter; 52 AbstractMessageWriter(final SessionOutputBuffer buffer, final LineFormatter formatter, final HttpParams params)53 public AbstractMessageWriter(final SessionOutputBuffer buffer, 54 final LineFormatter formatter, 55 final HttpParams params) { 56 super(); 57 if (buffer == null) { 58 throw new IllegalArgumentException("Session input buffer may not be null"); 59 } 60 this.sessionBuffer = buffer; 61 this.lineBuf = new CharArrayBuffer(128); 62 this.lineFormatter = (formatter != null) ? 63 formatter : BasicLineFormatter.DEFAULT; 64 } 65 writeHeadLine(HttpMessage message)66 protected abstract void writeHeadLine(HttpMessage message) 67 throws IOException 68 ; 69 write( final HttpMessage message)70 public void write( 71 final HttpMessage message) throws IOException, HttpException { 72 if (message == null) { 73 throw new IllegalArgumentException("HTTP message may not be null"); 74 } 75 writeHeadLine(message); 76 for (Iterator it = message.headerIterator(); it.hasNext(); ) { 77 Header header = (Header) it.next(); 78 this.sessionBuffer.writeLine 79 (lineFormatter.formatHeader(this.lineBuf, header)); 80 } 81 this.lineBuf.clear(); 82 this.sessionBuffer.writeLine(this.lineBuf); 83 } 84 85 } 86