ScanStreamTok.java Source code

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Here is the source code for ScanStreamTok.java

Source

/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS 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 AUTHOR OR 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.
 * 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */

import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StreamTokenizer;

/**
 * ScanStreamTok - show scanning a file with StringTokenizer.
 *
 * @author   Ian Darwin, http://www.darwinsys.com/
 * @version   $Id: ScanStreamTok.java,v 1.6 2004/02/17 00:17:54 ian Exp $
 */
public class ScanStreamTok {
    protected StreamTokenizer tf;

    public static void main(String[] av) throws IOException {
        if (av.length == 0)
            new ScanStreamTok(new InputStreamReader(System.in)).process();
        else
            for (int i = 0; i < av.length; i++)
                new ScanStreamTok(av[i]).process();
    }

    /** Construct a file scanner by name */
    public ScanStreamTok(String fileName) throws IOException {
        tf = new StreamTokenizer(new FileReader(fileName));
    }

    /** Construct a file scanner by existing Reader */
    public ScanStreamTok(Reader rdr) throws IOException {
        tf = new StreamTokenizer(rdr);
    }

    protected void process() throws IOException {
        String s = null;
        int i;

        while ((i = tf.nextToken()) != StreamTokenizer.TT_EOF) {
            switch (i) {
            case StreamTokenizer.TT_EOF:
                System.out.println("End of file");
                break;
            case StreamTokenizer.TT_EOL:
                System.out.println("End of line");
                break;
            case StreamTokenizer.TT_NUMBER:
                System.out.println("Number " + tf.nval);
                break;
            case StreamTokenizer.TT_WORD:
                System.out.println("Word, length " + tf.sval.length() + "->" + tf.sval);
                break;
            default:
                System.out.println("What is it? i = " + i);
            }
        }
    }
}