/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002-2003 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 acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
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 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
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 *
 * 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,
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 * 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 and was
 * originally based on software copyright (c) 2002, International
 * Business Machines Corporation., http://www.ibm.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.xpath.test;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.StringReader;

import org.apache.xpath.expression.Expr;
import org.apache.xpath.impl.parser.ParseException;
import org.apache.xpath.impl.parser.SimpleNode;
import org.apache.xpath.impl.parser.XPath;

/** Simple class to parse and construct ASTs, dumping to System.out.  */
public class TestAST {

    public static String XPATH_LIST = "src2/org/apache/xpath/test/TestAST.txt";

    public TestAST(String[] args) {
        try {
            if (args.length == 0) {
                printFileList(XPATH_LIST);
            }
            else {
                for (int i = 0; i < args.length; i++) {
                    printIt(args[i]);
                }            
            }

        } 
        catch (Exception e) {
            System.out.println(e.getMessage());
            e.printStackTrace();
        }
    }
    
    /** Read file line-by-line and dump XPaths.  */
    public static void printFileList(String fName) {
        File f = new File(fName);
        try
        {
            BufferedReader br = new BufferedReader(new FileReader(f));
            String line = null;
            while ((line = br.readLine()) != null)
            {
                printIt(line);
            }
        }
        catch (Exception e)
        {
            System.out.println("ERROR: FileList " + fName 
                          + " threw: " + e.toString());
            e.printStackTrace();
        }
    }

    /** Parse and dump an XPath from a string.  */
    public static void printIt(String xp) throws ParseException
    {
        System.out.println("------- XPATH:  " + xp);
        XPath parser = new XPath(new StringReader(xp));
        SimpleNode n = parser.XPath2();
        Expr expr = (Expr) n.jjtGetChild(0);
        System.out.println("-getString(1): " + expr.getString(true));
        System.out.println("-getString(0): " + expr.getString(false));
        n.dump("|");
    }

    public static void main(String[] args) {
        new TestAST(args);
    }

}