Quadcap Embeddable Database

com/quadcap/io/AsciiReader.java

Go to the documentation of this file.

package com.quadcap.io;

/* Copyright 1997 - 2003 Quadcap Software.  All rights reserved.
 *
 * This software is distributed under the Quadcap Free Software License.
 * This software may be used or modified for any purpose, personal or
 * commercial.  Open Source redistributions are permitted.  Commercial
 * redistribution of larger works derived from, or works which bundle
 * this software requires a "Commercial Redistribution License"; see
 * http://www.quadcap.com/purchase.
 *
 * Redistributions qualify as "Open Source" under  one of the following terms:
 *   
 *    Redistributions are made at no charge beyond the reasonable cost of
 *    materials and delivery.
 *
 *    Redistributions are accompanied by a copy of the Source Code or by an
 *    irrevocable offer to provide a copy of the Source Code for up to three
 *    years at the cost of materials and delivery.  Such redistributions
 *    must allow further use, modification, and redistribution of the Source
 *    Code under substantially the same terms as this license.
 *
 * Redistributions of source code must retain the copyright notices as they
 * appear in each source code file, these license terms, and the
 * disclaimer/limitation of liability set forth as paragraph 6 below.
 *
 * Redistributions in binary form must reproduce this Copyright Notice,
 * these license terms, and the disclaimer/limitation of liability set
 * forth as paragraph 6 below, in the documentation and/or other materials
 * provided with the distribution.
 *
 * The Software is provided on an "AS IS" basis.  No warranty is
 * provided that the Software is free of defects, or fit for a
 * particular purpose.  
 *
 * Limitation of Liability. Quadcap Software shall not be liable
 * for any damages suffered by the Licensee or any third party resulting
 * from use of the Software.
 */

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

/**
 * This class is an adaptor class that can be used to convert an input
 * stream that contains ASCII bytes into a reader that returns 
 * those bytes as Unicode characters.
 *
 * @author Stan Bailes
 */
public class AsciiReader extends Reader {
    InputStream                         in;

    public AsciiReader(InputStream in) {
        this.in = in;
    }

    public void close() throws IOException {
        in.close();
    }

    public int read() throws IOException {
        return in.read();
    }

    public int read(char[] cbuf) throws IOException {
        for (int i = 0; i < cbuf.length; i++) {
            int c = read();
            if (c < 0) return i;
            cbuf[i] = (char)c;
        }
        return cbuf.length;
    }
        
    public int read(char[] cbuf, int off, int len) throws IOException {
        for (int i = 0; i < len; i++) {
            int c = read();
            if (c < 0) return i;
            cbuf[off + i] = (char)c;
        }
        return len;
    }
}