/*
*
* $Id: PDFXref.java,v 1.1.1.1 2001/10/29 19:51:09 ezb Exp $
*
* $Date: 2001/10/29 19:51:09 $
*
*
*
* 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 gnu.jpdf;
/**
* <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
* @author $Author: ezb $
* @version $Revision: 1.1.1.1 $, $Date: 2001/10/29 19:51:09 $
*
*/
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
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