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Java > Open Source Codes > com > lowagie > tools > split_pdf


1 /*
2  * $Id: split_pdf.java 2752 2007-05-15 14:58:33Z blowagie $
3  * $Name$
4  *
5  * Copyright 2002 by Bruno Lowagie
6  *
7  * The contents of this file are subject to the Mozilla Public License Version 1.1
8  * (the "License"); you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at http://www.mozilla.org/MPL/
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the License.
14  *
15  * The Original Code is 'iText, a free JAVA-PDF library'.
16  *
17  * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
18  * the Initial Developer are Copyright (C) 1999-2006 by Bruno Lowagie.
19  * All Rights Reserved.
20  * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
21  * are Copyright (C) 2000-2006 by Paulo Soares. All Rights Reserved.
22  *
23  * Contributor(s): all the names of the contributors are added in the source code
24  * where applicable.
25  *
26  * Alternatively, the contents of this file may be used under the terms of the
27  * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
28  * provisions of LGPL are applicable instead of those above. If you wish to
29  * allow use of your version of this file only under the terms of the LGPL
30  * License and not to allow others to use your version of this file under
31  * the MPL, indicate your decision by deleting the provisions above and
32  * replace them with the notice and other provisions required by the LGPL.
33  * If you do not delete the provisions above, a recipient may use your version
34  * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
35  *
36  * This library is free software; you can redistribute it and/or modify it
37  * under the terms of the MPL as stated above or under the terms of the GNU
38  * Library General Public License as published by the Free Software Foundation;
39  * either version 2 of the License, or any later version.
40  *
41  * This library is distributed in the hope that it will be useful, but WITHOUT
42  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
43  * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
44  * details.
45  *
46  * If you didn't download this code from the following link, you should check if
47  * you aren't using an obsolete version:
48  * http://www.lowagie.com/iText/
49  */
50
51 package com.lowagie.tools;
52
53 import java.io.FileOutputStream JavaDoc;
54
55 import com.lowagie.text.Document;
56 import com.lowagie.text.DocumentException;
57 import com.lowagie.text.pdf.PdfContentByte;
58 import com.lowagie.text.pdf.PdfImportedPage;
59 import com.lowagie.text.pdf.PdfReader;
60 import com.lowagie.text.pdf.PdfWriter;
61
62 /**
63  * This class demonstrates how to split a PDF file using iText.
64  * @author Bruno Lowagie
65  */
66 public class split_pdf extends java.lang.Object JavaDoc {
67     
68     /**
69      * This class can be used to split an existing PDF file.
70      * @param args the command line arguments
71      */
72     public static void main(String JavaDoc args[]) {
73         if (args.length != 4) {
74             System.err.println("arguments: srcfile destfile1 destfile2 pagenumber");
75         }
76         else {
77             try {
78                 int pagenumber = Integer.parseInt(args[3]);
79                 
80                 // we create a reader for a certain document
81 PdfReader reader = new PdfReader(args[0]);
82                 // we retrieve the total number of pages
83 int n = reader.getNumberOfPages();
84                 System.out.println("There are " + n + " pages in the original file.");
85                 
86                 if (pagenumber < 2 || pagenumber > n) {
87                     throw new DocumentException("You can't split this document at page " + pagenumber + "; there is no such page.");
88                 }
89                 
90                 // step 1: creation of a document-object
91 Document document1 = new Document(reader.getPageSizeWithRotation(1));
92                 Document document2 = new Document(reader.getPageSizeWithRotation(pagenumber));
93                 // step 2: we create a writer that listens to the document
94 PdfWriter writer1 = PdfWriter.getInstance(document1, new FileOutputStream JavaDoc(args[1]));
95                 PdfWriter writer2 = PdfWriter.getInstance(document2, new FileOutputStream JavaDoc(args[2]));
96                 // step 3: we open the document
97 document1.open();
98                 PdfContentByte cb1 = writer1.getDirectContent();
99                 document2.open();
100                 PdfContentByte cb2 = writer2.getDirectContent();
101                 PdfImportedPage page;
102                 int rotation;
103                 int i = 0;
104                 // step 4: we add content
105 while (i < pagenumber - 1) {
106                     i++;
107                     document1.setPageSize(reader.getPageSizeWithRotation(i));
108                     document1.newPage();
109                     page = writer1.getImportedPage(reader, i);
110                     rotation = reader.getPageRotation(i);
111                     if (rotation == 90 || rotation == 270) {
112                         cb1.addTemplate(page, 0, -1f, 1f, 0, 0, reader.getPageSizeWithRotation(i).getHeight());
113                     }
114                     else {
115                         cb1.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
116                     }
117                 }
118                 while (i < n) {
119                     i++;
120                     document2.setPageSize(reader.getPageSizeWithRotation(i));
121                     document2.newPage();
122                     page = writer2.getImportedPage(reader, i);
123                     rotation = reader.getPageRotation(i);
124                     if (rotation == 90 || rotation == 270) {
125                         cb2.addTemplate(page, 0, -1f, 1f, 0, 0, reader.getPageSizeWithRotation(i).getHeight());
126                     }
127                     else {
128                         cb2.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
129                     }
130                     System.out.println("Processed page " + i);
131                 }
132                 // step 5: we close the document
133 document1.close();
134                 document2.close();
135             }
136             catch(Exception JavaDoc e) {
137                 e.printStackTrace();
138             }
139         }
140     }
141 }
142
143
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