com.itextpdf.text.pdf.PdfConcatenate Maven / Gradle / Ivy
/*
* $Id: 5fd010e417a05cd9a8c0c3c1b0ad6ab8f3d9440f $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
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* For more information, please contact iText Software Corp. at this
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*/
package com.itextpdf.text.pdf;
import java.io.IOException;
import java.io.OutputStream;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
/**
* Wrapper class for PdfCopy and PdfSmartCopy.
* Allows you to concatenate existing PDF documents with much less code.
*/
public class PdfConcatenate {
/** The Document object for PdfCopy. */
protected Document document;
/** The actual PdfWriter */
protected PdfCopy copy;
/**
* Creates an instance of the concatenation class.
* @param os the OutputStream for the PDF document
*/
public PdfConcatenate(OutputStream os) throws DocumentException {
this(os, false);
}
/**
* Creates an instance of the concatenation class.
* @param os the OutputStream for the PDF document
* @param smart do we want PdfCopy to detect redundant content?
*/
public PdfConcatenate(OutputStream os, boolean smart) throws DocumentException {
document = new Document();
if (smart)
copy = new PdfSmartCopy(document, os);
else
copy = new PdfCopy(document, os);
}
/**
* Adds the pages from an existing PDF document.
* @param reader the reader for the existing PDF document
* @return the number of pages that were added
* @throws DocumentException
* @throws IOException
*/
public int addPages(PdfReader reader) throws DocumentException, IOException {
open();
int n = reader. getNumberOfPages();
for (int i = 1; i <= n; i++) {
copy.addPage(copy.getImportedPage(reader, i));
}
copy.freeReader(reader);
reader.close();
return n;
}
/**
* Gets the PdfCopy instance so that you can add bookmarks or change preferences before you close PdfConcatenate.
*/
public PdfCopy getWriter() {
return copy;
}
/**
* Opens the document (if it isn't open already).
* Opening the document is done implicitly.
*/
public void open() {
if (!document.isOpen()) {
document.open();
}
}
/**
* We've finished writing the concatenated document.
*/
public void close() {
document.close();
}
}