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1:   using System;
2:   using System.IO;
3:  
4:   using iTextSharp.text;
5:   using iTextSharp.text.pdf;
6:  
7:  
8:   namespace iTextSharp.tutorial.Chap01
9:   {
10:       /// <summary>
11:       /// Split srcfile destfile1 destfile2 pagenumber
12:       /// </summary>
13:       public class Split
14:       {
15:           public Split(String[] args)
16:           {
17:               if (args.Length != 4) 
18:               {
19:                   Console.Error.WriteLine("This tools needs 4 parameters:\njava Split srcfile destfile1 destfile2 pagenumber");
20:               }
21:               else 
22:               {
23:                   try 
24:                   {
25:                       int pagenumber = int.Parse(args[3]);
26:                   
27:                       // we create a reader for a certain document
28:                       PdfReader reader = new PdfReader(args[0]);
29:                       // we retrieve the total number of pages
30:                       int n = reader.NumberOfPages;
31:                       Console.WriteLine("There are " + n + " pages in the original file.");
32:                   
33:                       if (pagenumber < 2 || pagenumber > n) 
34:                       {
35:                           throw new DocumentException("You can't split this document at page " + pagenumber + "; there is no such page.");
36:                       }
37:                   
38:                       // step 1: creation of a document-object
39:                       Document document1 = new Document(reader.GetPageSizeWithRotation(1));
40:                       Document document2 = new Document(reader.GetPageSizeWithRotation(pagenumber));
41:                       // step 2: we create a writer that listens to the document
42:                       PdfWriter writer1 = PdfWriter.GetInstance(document1, new FileStream(args[1], FileMode.Create));
43:                       PdfWriter writer2 = PdfWriter.GetInstance(document2, new FileStream(args[2], FileMode.Create));
44:                       // step 3: we open the document
45:                       document1.Open();
46:                       PdfContentByte cb1 = writer1.DirectContent;
47:                       document2.Open();
48:                       PdfContentByte cb2 = writer2.DirectContent;
49:                       PdfImportedPage page;
50:                       int rotation;
51:                       int i = 0;
52:                       // step 4: we add content
53:                       while (i < pagenumber - 1) 
54:                       {
55:                           i++;
56:                           document1.SetPageSize(reader.GetPageSizeWithRotation(i));
57:                           document1.NewPage();
58:                           page = writer1.GetImportedPage(reader, i);
59:                           rotation = reader.GetPageRotation(i);
60:                           if (rotation == 90 || rotation == 270) 
61:                           {
62:                               cb1.AddTemplate(page, 0, -1f, 1f, 0, 0, reader.GetPageSizeWithRotation(i).Height);
63:                           }
64:                           else 
65:                           {
66:                               cb1.AddTemplate(page, 1f, 0, 0, 1f, 0, 0);
67:                           }
68:                       }
69:                       while (i < n) 
70:                       {
71:                           i++;
72:                           document2.SetPageSize(reader.GetPageSizeWithRotation(i));
73:                           document2.NewPage();
74:                           page = writer2.GetImportedPage(reader, i);
75:                           rotation = reader.GetPageRotation(i);
76:                           if (rotation == 90 || rotation == 270) 
77:                           {
78:                               cb2.AddTemplate(page, 0, -1f, 1f, 0, 0, reader.GetPageSizeWithRotation(i).Height);
79:                           }
80:                           else 
81:                           {
82:                               cb2.AddTemplate(page, 1f, 0, 0, 1f, 0, 0);
83:                           }
84:                           Console.WriteLine("Processed page " + i);
85:                       }
86:                       // step 5: we close the document
87:                       document1.Close();
88:                       document2.Close();
89:                   }
90:                   catch(Exception e) 
91:                   {
92:                       Console.Error.WriteLine(e.Message);
93:                       Console.Error.WriteLine(e.StackTrace);
94:                   }
95:               }
96:  
97:           }
98:       }
99:   }