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}