01: /*
02: * $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0-beta1/module-main/src/main/java/org/apache/http/impl/io/AbstractMessageWriter.java $
03: * $Revision: 569673 $
04: * $Date: 2007-08-25 15:58:51 +0200 (Sat, 25 Aug 2007) $
05: *
06: * ====================================================================
07: * Licensed to the Apache Software Foundation (ASF) under one
08: * or more contributor license agreements. See the NOTICE file
09: * 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
48: HttpMessageWriter {
49:
50: protected final SessionOutputBuffer sessionBuffer;
51: protected final CharArrayBuffer lineBuf;
52: protected final LineFormatter lineFormatter;
53:
54: public AbstractMessageWriter(final SessionOutputBuffer buffer,
55: final LineFormatter formatter, final HttpParams params) {
56: super ();
57: if (buffer == null) {
58: throw new IllegalArgumentException(
59: "Session input buffer may not be null");
60: }
61: this .sessionBuffer = buffer;
62: this .lineBuf = new CharArrayBuffer(128);
63: this .lineFormatter = (formatter != null) ? formatter
64: : BasicLineFormatter.DEFAULT;
65: }
66:
67: protected abstract void writeHeadLine(HttpMessage message)
68: throws IOException;
69:
70: public void write(final HttpMessage message) throws IOException,
71: HttpException {
72: if (message == null) {
73: throw new IllegalArgumentException(
74: "HTTP message may not be null");
75: }
76: writeHeadLine(message);
77: for (Iterator it = message.headerIterator(); it.hasNext();) {
78: Header header = (Header) it.next();
79: this.sessionBuffer.writeLine(lineFormatter.formatHeader(
80: this.lineBuf, header));
81: }
82: this.lineBuf.clear();
83: this.sessionBuffer.writeLine(this.lineBuf);
84: }
85:
86: }
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