bundles/org.eclipse.rap.themeeditor/css/org/apache/batik/util/io/ASCIIDecoder.java

/*

   Copyright 2002-2003  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.

 */
package org.apache.batik.util.io;

import java.io.IOException;
import java.io.InputStream;

/**
 * This class represents an object which decodes ASCII characters from
 * a stream of bytes.
 *
 * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
 * @version $Id: ASCIIDecoder.java,v 1.1 2009/12/06 10:40:09 rsternber Exp $
 */
public class ASCIIDecoder extends AbstractCharDecoder {
    
    /**
     * Creates a new ASCIIDecoder.
     */
    public ASCIIDecoder(InputStream is) {
        super(is);
    }

    /**
     * Reads the next character.
     * @return a character or END_OF_STREAM.
     */
    public int readChar() throws IOException {
        if (position == count) {
            fillBuffer();
        }
        if (count == -1) {
            return END_OF_STREAM;
        }
        int result = buffer[position++];
        if (result < 0) {
            charError("ASCII");
        }
        return result;
    }
}