Package com.lowagie.tools.plugins

Source Code of com.lowagie.tools.plugins.Concat

/*
* $Id: Concat.java 45 2007-05-15 22:02:53Z chammer $
* Copyright (c) 2005-2007 Bruno Lowagie, Carsten Hammer, Paulo Soares
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/

/*
* This class was originally published under the MPL by Bruno Lowagie,
* Paulo Soares and Carsten Hammer.
* It was a part of iText, a Java-PDF library. You can now use it under
* the MIT License; for backward compatibility you can also use it under
* the MPL version 1.1: http://www.mozilla.org/MPL/
* A copy of the MPL license is bundled with the source code FYI.
*/

package com.lowagie.tools.plugins;

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JInternalFrame;

import com.lowagie.text.Document;
import com.lowagie.text.pdf.PdfCopy;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.SimpleBookmark;
import com.lowagie.tools.AbstractTool;
import com.lowagie.tools.arguments.FileArgument;
import com.lowagie.tools.arguments.StringArgument;
import com.lowagie.tools.arguments.filters.PdfFilter;

/**
* Concatenates two PDF files
*/
public class Concat extends AbstractTool {

  static {
    addVersion("$Id: Concat.java 45 2007-05-15 22:02:53Z chammer $");
  }
  /**
   * Constructs a Concat object.
   */
  public Concat() {
    menuoptions = MENU_EXECUTE | MENU_EXECUTE_SHOW;
    arguments.add(new FileArgument(this, "srcfile1", "The first PDF file", false, new PdfFilter()));
    arguments.add(new FileArgument(this, "srcfile2", "The second PDF file", false, new PdfFilter()));
    arguments.add(new FileArgument(this, "destfile", "The file to which the concatenated PDF has to be written", true, new PdfFilter()));
  }

  /**
   * @see com.lowagie.tools.AbstractTool#createFrame()
   */
  protected void createFrame() {
    internalFrame = new JInternalFrame("Concatenate 2 PDF files", true, false, true);
    internalFrame.setSize(300, 80);
    internalFrame.setJMenuBar(getMenubar());
    System.out.println("=== Concat OPENED ===");
  }

  /**
   * @see com.lowagie.tools.AbstractTool#execute()
   */
  public void execute() {
    try {
      String[] files = new String[2];
      if (getValue("srcfile1") == null) throw new InstantiationException("You need to choose a first sourcefile");
      files[0] = ((File)getValue("srcfile1")).getAbsolutePath();
      if (getValue("srcfile2") == null) throw new InstantiationException("You need to choose a second sourcefile");
      files[1] = ((File)getValue("srcfile2")).getAbsolutePath();
      if (getValue("destfile") == null) throw new InstantiationException("You need to choose a destination file");
      File pdf_file = (File)getValue("destfile");
            int pageOffset = 0;
            ArrayList master = new ArrayList();
            Document document = null;
            PdfCopy  writer = null;
            for (int i = 0; i < 2; i++) {
              // we create a reader for a certain document
                PdfReader reader = new PdfReader(files[i]);
                reader.consolidateNamedDestinations();
                // we retrieve the total number of pages
                int n = reader.getNumberOfPages();
                List bookmarks = SimpleBookmark.getBookmark(reader);
                if (bookmarks != null) {
                    if (pageOffset != 0)
                        SimpleBookmark.shiftPageNumbers(bookmarks, pageOffset, null);
                    master.addAll(bookmarks);
                }
                pageOffset += n;
                System.out.println("There are " + n + " pages in " + files[i]);
                if (i == 0) {
                    // step 1: creation of a document-object
                    document = new Document(reader.getPageSizeWithRotation(1));
                    // step 2: we create a writer that listens to the document
                    writer = new PdfCopy(document, new FileOutputStream(pdf_file));
                    // step 3: we open the document
                    document.open();
                }
                // step 4: we add content
                PdfImportedPage page;
                for (int p = 0; p < n; ) {
                    ++p;
                    page = writer.getImportedPage(reader, p);
                    writer.addPage(page);
                    System.out.println("Processed page " + p);
                }
            }
            if (!master.isEmpty())
                writer.setOutlines(master);
            // step 5: we close the document
            document.close();
    }
    catch(Exception e) {
            e.printStackTrace();
        }
    }

    /**
     *
     * @see com.lowagie.tools.AbstractTool#valueHasChanged(com.lowagie.tools.arguments.StringArgument)
     * @param arg StringArgument
     */
    public void valueHasChanged(StringArgument arg) {
    if (internalFrame == null) {
      // if the internal frame is null, the tool was called from the commandline
      return;
    }
    // represent the changes of the argument in the internal frame
  }


    /**
     * Concatenates two PDF files.
     *
     * @param args String[]
     */
    public static void main(String[] args) {
      Concat tool = new Concat();
      if (args.length < 2) {
        System.err.println(tool.getUsage());
      }
      tool.setMainArguments(args);
        tool.execute();
  }

    /**
     *
     * @see com.lowagie.tools.AbstractTool#getDestPathPDF()
     * @throws InstantiationException
     * @return File
     */
    protected File getDestPathPDF() throws InstantiationException {
    return (File)getValue("destfile");
  }

}
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