/*
* $Id: Split.java 45 2007-05-15 22:02:53Z chammer $
* Copyright (c) 2005-2007 Bruno Lowagie, Carsten Hammer
*
* 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
* 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 javax.swing.JInternalFrame;
import com.lowagie.text.Document;
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;
import com.lowagie.tools.AbstractTool;
import com.lowagie.tools.arguments.FileArgument;
import com.lowagie.tools.arguments.StringArgument;
import com.lowagie.tools.arguments.filters.PdfFilter;
import com.lowagie.tools.swing.PdfInformationPanel;
/**
* This tool lets you split a PDF in two separate PDF files.
*/
public class Split extends AbstractTool {
static {
addVersion("$Id: Split.java 45 2007-05-15 22:02:53Z chammer $");
}
/**
* Constructs an Split object.
*/
public Split() {
FileArgument f = new FileArgument(this, "srcfile", "The file you want to split", false, new PdfFilter());
f.setLabel(new PdfInformationPanel());
arguments.add(f);
arguments.add(new FileArgument(this, "destfile1", "The file to which the first part of the original PDF has to be written", true, new PdfFilter()));
arguments.add(new FileArgument(this, "destfile2", "The file to which the second part of the original PDF has to be written", true, new PdfFilter()));
arguments.add(new StringArgument(this, "pagenumber", "The pagenumber where you want to split", String.class.getName()));
}
/**
* @see com.lowagie.tools.AbstractTool#createFrame()
*/
protected void createFrame() {
internalFrame = new JInternalFrame("Split", true, false, true);
internalFrame.setSize(300, 80);
internalFrame.setJMenuBar(getMenubar());
System.out.println("=== Split OPENED ===");
}
/**
* @see com.lowagie.tools.AbstractTool#execute()
*/
public void execute() {
try {
if (getValue("srcfile") == null) throw new InstantiationException("You need to choose a sourcefile");
File src = (File)getValue("srcfile");
if (getValue("destfile1") == null) throw new InstantiationException("You need to choose a destination file for the first part of the PDF");
File file1 = (File)getValue("destfile1");
if (getValue("destfile2") == null) throw new InstantiationException("You need to choose a destination file for the second part of the PDF");
File file2 = (File)getValue("destfile2");
int pagenumber = Integer.parseInt((String)getValue("pagenumber"));
// we create a reader for a certain document
PdfReader reader = new PdfReader(src.getAbsolutePath());
// 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("You can't split this document at page " + pagenumber + "; there is no such page.");
}
// step 1: creation of a document-object
Document document1 = new Document(reader.getPageSizeWithRotation(1));
Document document2 = new Document(reader.getPageSizeWithRotation(pagenumber));
// step 2: we create a writer that listens to the document
PdfWriter writer1 = PdfWriter.getInstance(document1, new FileOutputStream(file1));
PdfWriter writer2 = PdfWriter.getInstance(document2, new FileOutputStream(file2));
// 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).height());
}
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).height());
}
else {
cb2.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
}
}
// step 5: we close the document
document1.close();
document2.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
}
/**
* Split a PDF in two separate PDF files.
*
* @param args String[]
*/
public static void main(String[] args) {
Split tool = new Split();
if (args.length < 4) {
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("destfile1");
}
}