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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:       DebugLogPrintWriter.java
 * author:     Jon Iles
 * copyright:  (c) Packwood Software 2020
 * date:       2020-05-29
 */

/*
 * 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.common;

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * Utility method for creating a PrintWriter instance for debug output.
 */
public final class DebugLogPrintWriter
{
   /**
    * If the MPXJ_DEBUG_LOG environment variable is set, create a
    * PrintWriter to write to the specified file. A new file is created each time.
    *
    * @return PrintWriter instance
    */
   public static final PrintWriter getInstance()
   {
      return getInstance(false);
   }

   /**
    * If the MPXJ_DEBUG_LOG environment variable is set, create a
    * PrintWriter to write to the specified file.
    *
    * @param append append to an existing file if true
    * @return PrintWriter instance
    */
   public static final PrintWriter getInstance(boolean append)
   {
      PrintWriter result;
      String logFile = System.getenv("MPXJ_DEBUG_LOG");
      if (logFile == null)
      {
         result = null;
      }
      else
      {
         try
         {
            result = new PrintWriter(new FileWriter(logFile, append));
            System.out.println("DebugLogger Configured");
         }
         catch (IOException e)
         {
            result = null;
         }
      }
      return result;
   }
}