001/*
002 * $Id:  $
003 *
004 * This file is part of the iText (R) project.
005 * Copyright (c) 1998-2011 1T3XT BVBA
006 * Authors: Bruno Lowagie, Paulo Soares, et al.
007 *
008 * This program is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU Affero General Public License version 3
010 * as published by the Free Software Foundation with the addition of the
011 * following permission added to Section 15 as permitted in Section 7(a):
012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
014 *
015 * This program is distributed in the hope that it will be useful, but
016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
017 * or FITNESS FOR A PARTICULAR PURPOSE.
018 * See the GNU Affero General Public License for more details.
019 * You should have received a copy of the GNU Affero General Public License
020 * along with this program; if not, see http://www.gnu.org/licenses or write to
021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
022 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
023 * http://itextpdf.com/terms-of-use/
024 *
025 * The interactive user interfaces in modified source and object code versions
026 * of this program must display Appropriate Legal Notices, as required under
027 * Section 5 of the GNU Affero General Public License.
028 *
029 * In accordance with Section 7(b) of the GNU Affero General Public License,
030 * a covered work must retain the producer line in every PDF that is created
031 * or manipulated using iText.
032 *
033 * You can be released from the requirements of the license by purchasing
034 * a commercial license. Buying such a license is mandatory as soon as you
035 * develop commercial activities involving the iText software without
036 * disclosing the source code of your own applications.
037 * These activities include: offering paid services to customers as an ASP,
038 * serving PDFs on the fly in a web application, shipping iText with a closed
039 * source product.
040 *
041 * For more information, please contact iText Software Corp. at this
042 * address: sales@itextpdf.com
043 */
044package com.itextpdf.text.pdf;
045
046import java.io.IOException;
047import java.io.OutputStream;
048
049import com.itextpdf.text.Document;
050import com.itextpdf.text.DocumentException;
051
052/**
053 * Wrapper class for PdfCopy and PdfSmartCopy.
054 * Allows you to concatenate existing PDF documents with much less code.
055 */
056public class PdfConcatenate {
057        /** The Document object for PdfCopy. */
058        protected Document document;
059        /** The actual PdfWriter */
060        protected PdfCopy copy;
061        
062        /**
063         * Creates an instance of the concatenation class.
064         * @param os    the OutputStream for the PDF document
065         */
066        public PdfConcatenate(OutputStream os) throws DocumentException {
067                this(os, false);
068        }
069
070        /**
071         * Creates an instance of the concatenation class.
072         * @param os    the OutputStream for the PDF document
073         * @param smart do we want PdfCopy to detect redundant content?
074         */
075        public PdfConcatenate(OutputStream os, boolean smart) throws DocumentException {
076                document = new Document();
077                if (smart)
078                        copy = new PdfSmartCopy(document, os);
079                else
080                        copy = new PdfCopy(document, os);       
081        }
082        
083        /**
084         * Adds the pages from an existing PDF document.
085         * @param reader        the reader for the existing PDF document
086         * @return                      the number of pages that were added
087         * @throws DocumentException
088         * @throws IOException
089         */
090        public int addPages(PdfReader reader) throws DocumentException, IOException {
091                open();
092                int n = reader. getNumberOfPages();
093            for (int i = 1; i <= n; i++) {
094                System.out.println(i);
095                copy.addPage(copy.getImportedPage(reader, i));
096            }
097            copy.freeReader(reader);
098            return n;
099        }
100        
101        /**
102         * Gets the PdfCopy instance so that you can add bookmarks or change preferences before you close PdfConcatenate.
103         */
104        public PdfCopy getWriter() {
105                return copy;
106        }
107        
108        /**
109         * Opens the document (if it isn't open already).
110         * Opening the document is done implicitly.
111         */
112        public void open() {
113                if (!document.isOpen()) {
114                        document.open();
115                }
116        }
117        
118        /**
119         * We've finished writing the concatenated document.
120         */
121        public void close() {
122                document.close();
123        }
124}