com.lowagie.tools.ConcatPdf Maven / Gradle / Ivy
/*
* $Id: ConcatPdf.java 3373 2008-05-12 16:21:24Z xlv $
*
* Copyright 2002 by Mark Thompson
*
* 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:
* https://github.com/LibrePDF/OpenPDF
*/
package com.lowagie.tools;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
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.PdfStream;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.pdf.SimpleBookmark;
/**
* Tool that can be used to concatenate existing PDF files.
* @since 2.1.1 (renamed to follow Java naming conventions)
*/
public class ConcatPdf {
/**
* This class can be used to concatenate existing PDF files.
* (This was an example known as PdfCopy.java)
* @param args the command line arguments
*/
public static void main(String[] args) {
if (args.length < 2) {
System.err.println("arguments: file1 [file2 ...] destfile");
}
else {
try {
File outFile = new File(args[args.length-1]);
List sources = new ArrayList<>();
for (int i = 0; i < args.length -1; i++) {
sources.add(new File(args[i]));
}
concat(sources, outFile);
}
catch(IOException e) {
e.printStackTrace();
}
}
}
public static void concat(List sources, File target) throws IOException {
for (File source: sources) {
if (!source.isFile() || !source.canRead()) {
throw new IOException("cannot read:" + source.getAbsolutePath());
}
}
int pageOffset = 0;
List> master = new ArrayList<>();
Document document = new Document();
PdfCopy writer = new PdfCopy(document, new BufferedOutputStream(Files.newOutputStream(target.toPath())));
writer.setPdfVersion(PdfWriter.VERSION_1_7);
writer.setFullCompression();
writer.setCompressionLevel(PdfStream.BEST_COMPRESSION);
document.open();
for (File source: sources) {
// we create a reader for a certain document
PdfReader reader = new PdfReader(new BufferedInputStream(Files.newInputStream(source.toPath())));
reader.consolidateNamedDestinations();
// we retrieve the total number of pages
int numberOfPages = reader.getNumberOfPages();
List> bookmarks = SimpleBookmark.getBookmarkList(reader);
if (bookmarks != null) {
if (pageOffset != 0) {
SimpleBookmark.shiftPageNumbersInRange(bookmarks, pageOffset, null);
}
master.addAll(bookmarks);
}
pageOffset += numberOfPages;
// we add content
PdfImportedPage page;
for (int i = 1; i <= numberOfPages; i++) {
page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
writer.freeReader(reader);
}
if (!master.isEmpty()) {
writer.setOutlines(master);
}
// we close the document
document.close();
}
}