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/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/impl/io/AbstractMessageWriter.java $
* $Revision: 569673 $
* $Date: 2007-08-25 06:58:51 -0700 (Sat, 25 Aug 2007) $
*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.impl.io;
import java.io.IOException;
import java.util.Iterator;
import org.apache.http.Header;
import org.apache.http.HttpException;
import org.apache.http.HttpMessage;
import org.apache.http.io.HttpMessageWriter;
import org.apache.http.io.SessionOutputBuffer;
import org.apache.http.message.LineFormatter;
import org.apache.http.message.BasicLineFormatter;
import org.apache.http.params.HttpParams;
import org.apache.http.util.CharArrayBuffer;
public abstract class AbstractMessageWriter implements HttpMessageWriter {
protected final SessionOutputBuffer sessionBuffer;
protected final CharArrayBuffer lineBuf;
protected final LineFormatter lineFormatter;
public AbstractMessageWriter(final SessionOutputBuffer buffer,
final LineFormatter formatter,
final HttpParams params) {
super();
if (buffer == null) {
throw new IllegalArgumentException("Session input buffer may not be null");
}
this.sessionBuffer = buffer;
this.lineBuf = new CharArrayBuffer(128);
this.lineFormatter = (formatter != null) ?
formatter : BasicLineFormatter.DEFAULT;
}
protected abstract void writeHeadLine(HttpMessage message)
throws IOException
;
public void write(
final HttpMessage message) throws IOException, HttpException {
if (message == null) {
throw new IllegalArgumentException("HTTP message may not be null");
}
writeHeadLine(message);
for (Iterator it = message.headerIterator(); it.hasNext(); ) {
Header header = (Header) it.next();
this.sessionBuffer.writeLine
(lineFormatter.formatHeader(this.lineBuf, header));
}
this.lineBuf.clear();
this.sessionBuffer.writeLine(this.lineBuf);
}
}
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