net.sf.mpxj.sample.HexDump Maven / Gradle / Ivy

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Library that provides facilities to allow project information to be manipulated in Java and .Net. Supports a range of data formats: Microsoft Project Exchange (MPX), Microsoft Project (MPP,MPT), Microsoft Project Data Interchange (MSPDI XML), Microsoft Project Database (MPD), Planner (XML), Primavera (PM XML, XER, and database), Asta Powerproject (PP, MDB), Asta Easyplan (PP), Phoenix Project Manager (PPX), FastTrack Schedule (FTS), and the Standard Data Exchange Format (SDEF).

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/*
 * file:       HexDump.java
 * author:     Jon Iles
 * copyright:  (c) Packwood Software 2018
 * date:       10/03/2018
 */

/*
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation; either version 2.1 of the License, or (at your
 * option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

package net.sf.mpxj.sample;

import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.PrintWriter;

import net.sf.mpxj.common.ByteArrayHelper;
import net.sf.mpxj.common.InputStreamHelper;

/**
 * This is a trivial class used to dump the contents of a file
 * as hex digits, and their ASCII equivalents.
 */
public class HexDump
{
   /**
    * Main method.
    *
    * @param args array of command line arguments
    */
   public static void main(String[] args)
   {
      try
      {
         if (args.length != 2)
         {
            System.out.println("Usage: HexDump  ");
         }
         else
         {
            System.out.println("Dump started.");
            long start = System.currentTimeMillis();
            process(args[0], args[1]);
            long elapsed = System.currentTimeMillis() - start;
            System.out.println("Dump completed in " + elapsed + "ms");
         }
      }

      catch (Exception ex)
      {
         System.out.println("Caught " + ex);
      }
   }

   /**
    * This method opens the input and output files and kicks
    * off the processing.
    *
    * @param input Name of the input file
    * @param output Name of the output file
    * @throws Exception Thrown on file read errors
    */
   private static void process(String input, String output) throws Exception
   {
      FileInputStream is = new FileInputStream(input);
      PrintWriter pw = new PrintWriter(new FileWriter(output));

      byte[] buffer = InputStreamHelper.readAvailable(is);
      pw.println(ByteArrayHelper.hexdump(buffer, 0, buffer.length, true, 16, ""));

      is.close();
      pw.flush();
      pw.close();
   }
}