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The source code

/*
 * $Header: /home/cvs/jakarta-commons/httpclient/src/test/org/apache/commons/httpclient/server/ResponseWriter.java,v 1.1.2.3 2004/02/22 18:21:18 olegk Exp $
 * $Revision: 1.1.2.3 $
 * $Date: 2004/02/22 18:21:18 $
 *
 * ====================================================================
 *
 *  Copyright 1999-2004 The Apache Software Foundation
 *
 *  Licensed 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
 * .
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */

package org.apache.commons.httpclient.server;

import java.io.BufferedWriter;
import java.io.FilterWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;

/**
 * Provides a hybrid Writer/OutputStream for sending HTTP response data
 * 
 * @author Christian Kohlschuetter
 */
public class ResponseWriter extends FilterWriter {
    public static final String CRLF = "\r\n";
    public static final String ISO_8859_1 = "ISO-8859-1";
    private OutputStream outStream;
    private String encoding;

    public ResponseWriter(OutputStream outStream) throws UnsupportedEncodingException {
        this(outStream, CRLF);
    }
    public ResponseWriter(OutputStream outStream, String lineSeparator) throws UnsupportedEncodingException {
        this(outStream, lineSeparator, ISO_8859_1);
    }
    public ResponseWriter(OutputStream outStream, String lineSeparator, String encoding) throws UnsupportedEncodingException {
        super(new BufferedWriter(new OutputStreamWriter(outStream, encoding)));
        this.outStream = outStream;
        this.encoding = encoding;
    }
    
    public String getEncoding() {
        return encoding;
    }
    
    public void close() throws IOException {
        if(out != null) {
            super.close();
            out = null;
        }
    }

    /* (non-Javadoc)
     * @see java.io.Writer#flush()
     */
    public void flush() throws IOException {
        if(out != null) {
            super.flush();
            outStream.flush();
        }
    }

    public void write(byte b) throws IOException {
        super.flush();
        outStream.write((int)b);
    }
    public void write(byte[] b) throws IOException {
        super.flush();
        outStream.write(b);
    }
    public void write(byte[] b, int off, int len) throws IOException {
        super.flush();
        outStream.write(b,off,len);
    }

    public void print(String s) throws IOException {
        if (s == null) {
            s = "null";
        }
        write(s);
    }
    
    public void print(int i) throws IOException {
        write(Integer.toString(i));
    }
    public void println(int i) throws IOException {
        write(Integer.toString(i));
        write(CRLF);
    }

    public void println(String s) throws IOException {
        print(s);
        write(CRLF);
    }
    
    public void println() throws IOException {
        write(CRLF);
    }
    
    
}


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