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105 lines
2.7 KiB
Java
105 lines
2.7 KiB
Java
/*
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*
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* $Id: PDFXref.java,v 1.2 2007/08/26 18:56:35 gil1 Exp $
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*
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* $Date: 2007/08/26 18:56:35 $
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*
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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package gnu.jpdf;
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/**
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* <p>This class is used to hold the xref information in the PDF
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* Trailer block.</p>
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*
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* <p>Basically, each object has an id, and an offset in the end file.</p>
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*
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* <p>See the Adobe PDF Manual for more information. This class will
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* normally not be used directly by a developer</p>
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*
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* @author Peter T. Mount
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* @author Eric Z. Beard, ericzbeard@hotmail.com
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* @version $Revision: 1.2 $, $Date: 2007/08/26 18:56:35 $
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*
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*/
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public class PDFXref
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{
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/*
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* NOTE: Originally an inner class in PDF.java (now PDFDocument) written
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* by Peter Mount for uk.org.retep.pdf
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*/
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/**
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* The id of a PDF Object
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*/
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public int id;
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/**
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* The offset within the PDF file
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*/
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public int offset;
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/**
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* The generation of the object, usually 0
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*/
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public int generation;
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/**
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* Creates a crossreference for a PDF Object
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* @param id The object's ID
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* @param offset The object's position in the file
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*/
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public PDFXref(int id,int offset)
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{
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this(id,offset,0);
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}
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/**
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* Creates a crossreference for a PDF Object
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*
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* @param id The object's ID
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* @param offset The object's position in the file
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* @param generation The object's generation, usually 0
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*/
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public PDFXref(int id,int offset,int generation)
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{
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this.id = id;
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this.offset = offset;
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this.generation = generation;
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}
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/**
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* @return The xref in the format of the xref section in the PDF file
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*/
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public String toString()
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{
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String of = Integer.toString(offset);
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String ge = Integer.toString(generation);
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String rs = "0000000000".substring(0, 10-of.length()) +
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of +
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" " +
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"00000".substring(0,5-ge.length())+ge;
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if(generation==65535)
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return rs+" f ";
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return rs+" n ";
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}
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} // end class PDFXref
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