Package com.lowagie.tools

Source Code of com.lowagie.tools.SplitPdf

/*
* $Id$
* $Name$
*
* Copyright 2002 by Bruno Lowagie
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999-2006 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000-2006 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above.  If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/

package com.lowagie.tools;

import java.io.FileOutputStream;
import com.lowagie.text.error_messages.MessageLocalization;

import com.lowagie.text.LwgDocument;
import com.lowagie.text.DocumentException;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfWriter;

/**
* This class demonstrates how to split a PDF file using iText.
* @author Bruno Lowagie
* @since 2.1.1 (renamed to follow Java naming conventions)
*/
public class SplitPdf extends java.lang.Object {
   
    /**
     * This class can be used to split an existing PDF file.
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        if (args.length != 4) {
            System.err.println("arguments: srcfile destfile1 destfile2 pagenumber");
        }
        else {
            try {
        int pagenumber = Integer.parseInt(args[3]);
               
        // we create a reader for a certain document
        PdfReader reader = new PdfReader(args[0]);
        // we retrieve the total number of pages
        int n = reader.getNumberOfPages();
        System.out.println("There are " + n + " pages in the original file.");
               
        if (pagenumber < 2 || pagenumber > n) {
          throw new DocumentException(MessageLocalization.getComposedMessage("you.can.t.split.this.document.at.page.1.there.is.no.such.page", pagenumber));
        }
               
        // step 1: creation of a document-object
        LwgDocument document1 = new LwgDocument(reader.getPageSizeWithRotation(1));
        LwgDocument document2 = new LwgDocument(reader.getPageSizeWithRotation(pagenumber));
        // step 2: we create a writer that listens to the document
        PdfWriter writer1 = PdfWriter.getInstance(document1, new FileOutputStream(args[1]));
        PdfWriter writer2 = PdfWriter.getInstance(document2, new FileOutputStream(args[2]));
        // step 3: we open the document
        document1.open();
        PdfContentByte cb1 = writer1.getDirectContent();
        document2.open();
        PdfContentByte cb2 = writer2.getDirectContent();
        PdfImportedPage page;
        int rotation;
        int i = 0;
        // step 4: we add content
        while (i < pagenumber - 1) {
          i++;
          document1.setPageSize(reader.getPageSizeWithRotation(i));
          document1.newPage();
          page = writer1.getImportedPage(reader, i);
          rotation = reader.getPageRotation(i);
          if (rotation == 90 || rotation == 270) {
            cb1.addTemplate(page, 0, -1f, 1f, 0, 0, reader.getPageSizeWithRotation(i).getHeight());
          }
          else {
            cb1.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
          }
        }
        while (i < n) {
          i++;
          document2.setPageSize(reader.getPageSizeWithRotation(i));
          document2.newPage();
          page = writer2.getImportedPage(reader, i);
          rotation = reader.getPageRotation(i);
          if (rotation == 90 || rotation == 270) {
            cb2.addTemplate(page, 0, -1f, 1f, 0, 0, reader.getPageSizeWithRotation(i).getHeight());
          }
          else {
            cb2.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
          }
          System.out.println("Processed page " + i);
        }
        // step 5: we close the document
        document1.close();
        document2.close();
            }
            catch(Exception e) {
                e.printStackTrace();
            }
        }
    }
}
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