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/*
 * $Header: /home/cvs/jakarta-commons/httpclient/src/test/org/apache/commons/httpclient/server/ResponseWriter.java,v 1.1.2.2 2003/11/24 20:41:11 oglueck Exp $
 * $Revision: 1.1.2.2 $
 * $Date: 2003/11/24 20:41:11 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * 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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