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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:       AstaFileReader.java
 * author:     Jon Iles
 * copyright:  (c) Packwood Software 2012
 * date:       23/04/2012
 */

/*
 * 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.asta;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.List;

import net.sf.mpxj.MPXJException;
import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.reader.AbstractProjectStreamReader;
import net.sf.mpxj.reader.ProjectReader;

/**
 * This class provides a generic front end to read project data from
 * an Asta PP file. Determines if the file is a text file or a SQLite database
 * and takes the appropriate action.
 */
public final class AstaFileReader extends AbstractProjectStreamReader
{
   /**
    * {@inheritDoc}
    */
   @Override public ProjectFile read(InputStream inputStream) throws MPXJException
   {
      try
      {
         BufferedInputStream is = new BufferedInputStream(inputStream);
         is.mark(100);
         byte[] buffer = new byte[SQLITE_TEXT.length()];
         is.read(buffer);
         is.reset();
         String actualText = new String(buffer);
         ProjectReader reader;
         if (SQLITE_TEXT.equals(actualText))
         {
            reader = new AstaDatabaseFileReader();
         }
         else
         {
            reader = new AstaTextFileReader();
         }

         addListenersToReader(reader);

         return reader.read(is);
      }

      catch (IOException ex)
      {
         throw new MPXJException("Failed to read file", ex);
      }
   }

   /**
    * {@inheritDoc}
    */
   @Override public List readAll(InputStream inputStream) throws MPXJException
   {
      return Arrays.asList(read(inputStream));
   }

   private static final String SQLITE_TEXT = "SQLite format";
}