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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:       AbstractProjectStreamReader.java
 * author:     Jon Iles
 * copyright:  (c) Packwood Software 2005
 * date:       Dec 21, 2005
 */

/*
 * 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.reader;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Collections;
import java.util.List;

import net.sf.mpxj.MPXJException;
import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.common.AutoCloseableHelper;

/**
 * Abstract implementation of the ProjectReader interface
 * for readers which consume a stream.
 */
public abstract class AbstractProjectStreamReader extends AbstractProjectReader
{
   @Override public ProjectFile read(String fileName) throws MPXJException
   {
      return read(new File(fileName));
   }

   /**
    * Default implementation of readAll to support file
    * formats which do not contain multiple schedules.
    */
   @Override public List readAll(String fileName) throws MPXJException
   {
      return readAll(new File(fileName));
   }

   @Override public ProjectFile read(File file) throws MPXJException
   {
      FileInputStream fis = null;

      try
      {
         fis = new FileInputStream(file);
         ProjectFile projectFile = read(fis);
         fis.close();
         return projectFile;
      }

      catch (IOException ex)
      {
         throw new MPXJException(MPXJException.READ_ERROR, ex);
      }

      finally
      {
         AutoCloseableHelper.closeQuietly(fis);
      }
   }

   /**
    * Default implementation of readAll to support file
    * formats which do not contain multiple schedules.
    */
   @Override public List readAll(File file) throws MPXJException
   {
      FileInputStream fis = null;

      try
      {
         fis = new FileInputStream(file);
         List projectFiles = readAll(fis);
         fis.close();
         return projectFiles;
      }

      catch (IOException ex)
      {
         throw new MPXJException(MPXJException.READ_ERROR, ex);
      }

      finally
      {
         AutoCloseableHelper.closeQuietly(fis);
      }
   }

   /**
    * Default implementation of readAll. Reads a single project,
    * if successful, returns a list with a single entry. If unsuccessful,
    * returns an empty list.
    *
    * @param inputStream InputStream instance
    * @return list of projects
    */
   @Override public List readAll(InputStream inputStream) throws MPXJException
   {
      ProjectFile file = read(inputStream);
      return file == null ? Collections.emptyList() : Collections.singletonList(file);
   }
}