tools/dtd2xsd/dtd2xsd.cs

   1 using System;
   2 using System.IO;
   3 using System.Reflection;
   4 using System.Xml;
   5 using System.Xml.Schema;
   6
   7 using BF = System.Reflection.BindingFlags;
   8
   9 class Dtd2XsdDriver
  10 {
  11         public static void Main (string [] args)
  12         {
  13                 try {
  14                         Run (args);
  15                 } catch (Exception ex) {
  16                         Console.WriteLine ("ERROR: " + ex.Message);
  17                 }
  18         }
  19
  20         static void Run (string [] args)
  21         {
  22                 if (args.Length < 1) {
  23                         Console.WriteLine ("USAGE: mono dtd2xsd.exe instance-xmlfile [output-xsdfile]");
  24                         return;
  25                 }
  26                 XmlTextReader xtr;
  27                 if (args [0].EndsWith (".dtd"))
  28                         xtr = new XmlTextReader ("<!DOCTYPE dummy SYSTEM '" + args [0] + "'><dummy/>",
  29                                 XmlNodeType.Document, null);
  30                 else
  31                         xtr = new XmlTextReader (args [0]);
  32                 XmlSchema xsd = Dtd2Xsd.Run (xtr);
  33                 if (args.Length > 1)
  34                         xsd.Write (new StreamWriter (args [1]));
  35                 else
  36                         xsd.Write (Console.Out);
  37         }
  38 }
  39
  40 public class Dtd2Xsd
  41 {
  42         public static XmlSchema Run (XmlTextReader xtr)
  43         {
  44                 while (xtr.NodeType != XmlNodeType.DocumentType) {
  45                         if (!xtr.Read ())
  46                                 throw new Exception ("DTD did not appeare.");
  47                 }
  48
  49                 // Hacky reflection part
  50                 object impl = xtr;
  51                 BF flag = BF.NonPublic | BF.Instance;
  52
  53                 // In Mono NET_2_0 XmlTextReader is just a wrapper which
  54                 // does not contain DTD directly.
  55                 FieldInfo fi = typeof (XmlTextReader).GetField ("source", flag);
  56                 if (fi != null)
  57                         impl = fi.GetValue (xtr);
  58
  59                 PropertyInfo pi = impl.GetType ().GetProperty ("DTD", flag);
  60                 object dtd = pi.GetValue (impl, null);
  61                 MethodInfo mi =
  62                         dtd.GetType ().GetMethod ("CreateXsdSchema", flag);
  63                 object o = mi.Invoke (dtd, null);
  64                 return (XmlSchema) o;
  65         }
  66 }
  67