mcs/class/Commons.Xml.Relaxng/Commons.Xml.Nvdl/NvdlBuiltInValidationProvider.cs

   1 using System;
   2 using System.Collections;
   3 using System.Collections.Specialized;
   4 using System.Xml;
   5 using Commons.Xml;
   6
   7 namespace Commons.Xml.Nvdl
   8 {
   9         public class NvdlBuiltInValidationProvider : NvdlValidationProvider
  10         {
  11                 public NvdlBuiltInValidationProvider ()
  12                 {
  13                 }
  14
  15                 public override NvdlValidatorGenerator CreateGenerator (
  16                         XmlReader reader, NvdlConfig config)
  17                 {
  18                         reader.MoveToContent ();
  19                         if (reader.NodeType != XmlNodeType.Element ||
  20                                 reader.NamespaceURI != Nvdl.BuiltInValidationNamespace)
  21                                 return null;
  22                         return new NvdlBuiltInValidatorGenerator (reader.LocalName == "allow");
  23                 }
  24         }
  25
  26         internal class NvdlBuiltInValidatorGenerator : NvdlValidatorGenerator
  27         {
  28                 bool allow;
  29
  30                 public NvdlBuiltInValidatorGenerator (bool allow)
  31                 {
  32                         this.allow = allow;
  33                 }
  34
  35                 public override XmlReader CreateValidator (XmlReader reader, XmlResolver resolver)
  36                 {
  37                         return new NvdlBuiltInValidationReader (reader, allow);
  38                 }
  39
  40                 public override bool AddOption (string name, string arg)
  41                 {
  42                         return false;
  43                 }
  44         }
  45
  46         internal class NvdlBuiltInValidationReader : XmlDefaultReader
  47         {
  48                 bool allow;
  49
  50                 public NvdlBuiltInValidationReader (XmlReader reader, bool allow)
  51                         : base (reader)
  52                 {
  53                         this.allow = allow;
  54                 }
  55
  56                 public override bool Read ()
  57                 {
  58                         if (!Reader.Read ())
  59                                 return false;
  60                         if (!allow)
  61                                 throw new NvdlValidationException (String.Format ("The NVDL script does not allow an element whose namespace is '{0}'", Reader.NamespaceURI), Reader as IXmlLineInfo);
  62                         return true;
  63                 }
  64         }
  65 }