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/*

*

* $Id: PDFXref.java,v 1.2 2007/08/26 18:56:35 gil1 Exp $

*

* $Date: 2007/08/26 18:56:35 $

*

*

*

* 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 pdf;

/**

* <p>This class is used to hold the xref information in the PDF

* Trailer block.</p>

*

* <p>Basically, each object has an id, and an offset in the end file.</p>

*

* <p>See the Adobe PDF Manual for more information. This class will

* normally not be used directly by a developer</p>

*

* @author Peter T. Mount

* @author Eric Z. Beard, ericzbeard@hotmail.com

* @version $Revision: 1.2 $, $Date: 2007/08/26 18:56:35 $

*

*/

public class PDFXref

{

/*

* NOTE: Originally an inner class in PDF.java (now PDFDocument) written

* by Peter Mount for uk.org.retep.pdf

*/

/**

* The id of a PDF Object

*/

public int id;

/**

* The offset within the PDF file

*/

public int offset;

/**

* The generation of the object, usually 0

*/

public int generation;

/**

* Creates a crossreference for a PDF Object

* @param id The object's ID

* @param offset The object's position in the file

*/

public PDFXref(int id,int offset)

{

this(id,offset,0);

}

/**

* Creates a crossreference for a PDF Object

*

* @param id The object's ID

* @param offset The object's position in the file

* @param generation The object's generation, usually 0

*/

public PDFXref(int id,int offset,int generation)

{

this.id = id;

this.offset = offset;

this.generation = generation;

}

/**

* @return The xref in the format of the xref section in the PDF file

*/

public String toString()

{

String of = Integer.toString(offset);

String ge = Integer.toString(generation);

String rs = "0000000000".substring(0, 10-of.length()) +

of +

" " +

"00000".substring(0,5-ge.length())+ge;

if(generation==65535)

return rs+" f ";

return rs+" n ";

}

} // end class PDFXref