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• Props14.java

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net.sf.mpxj.mpp.Props14 Maven / Gradle / Ivy

/*
 * file:       Props14.java
 * author:     Jon Iles
 * copyright:  (c) Packwood Software 2010
 * date:       20/01/2010
 */

/*
 * 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.mpp;

//import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

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

/**
 * This class represents the Props files found in Microsoft Project MPP14 files.
 */
final class Props14 extends Props
{
   /**
    * Constructor, reads the property data from an input stream.
    *
    * @param file parent project file
    * @param is input stream for reading props data
    */
   Props14(ProjectFile file, InputStream is)
      throws IOException
   {
      //FileOutputStream fos = new FileOutputStream ("c:\\temp\\props14." + System.currentTimeMillis() + ".txt");
      //PrintWriter pw = new PrintWriter (fos);

      byte[] header = InputStreamHelper.read(is, 16);
      byte[] data;

      int headerCount = MPPUtility.getShort(header, 12);
      int foundCount = 0;
      int availableBytes = is.available();

      while (foundCount < headerCount)
      {
         // I found a weird issue with an MPP file which would read OK
         // on Windows with a 1.7.0 JRE, but failed on the 64 bit version below:
         // OpenJDK Runtime Environment (IcedTea 2.6.11) (7u151-2.6.11-0ubuntu1.14.04.1)
         // This was the fix: if we don't have at least 12 bytes left to read, then bail out.
         if (availableBytes < 12)
         {
            break;
         }

         int attrib1 = readInt(is);
         int attrib2 = readInt(is);
         /*int attrib3 = */readInt(is);
         availableBytes -= 12;

         if (availableBytes < attrib1 || attrib1 < 1)
         {
            break;
         }

         try
         {
            data = InputStreamHelper.read(is, attrib1);
         }

         catch (IndexOutOfBoundsException ex)
         {
            // POI fails to read certain MPP files with this exception:
            // https://bz.apache.org/bugzilla/show_bug.cgi?id=61677
            // There is no fix presently, we just have to bail out at
            // this point - we're unable to read any more data.
            file.addIgnoredError(ex);
            break;
         }

         availableBytes -= attrib1;

         m_map.put(Integer.valueOf(attrib2), data);
         //pw.println(foundCount + " "+ attrib2 + ": " + ByteArrayHelper.hexdump(data, true));
         ++foundCount;

         //
         // Align to two byte boundary
         //
         if (data.length % 2 != 0)
         {
            InputStreamHelper.skip(is, 1);
         }
      }

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