mcs/class/Microsoft.Web.Services/Microsoft.Web.Services.Configuration/ConfigurationBase.cs

   1 //
   2 // FilterConfiguration.cs: Filter Configuration
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   8 //
   9
  10 using System;
  11 using System.Configuration;
  12 using System.Xml;
  13
  14 namespace Microsoft.Web.Services.Configuration {
  15
  16         public class ConfigurationBase {
  17
  18                 public ConfigurationBase () {}
  19
  20                 protected static void CheckForChildNodes (XmlNode node)
  21                 {
  22                         if (node == null)
  23                                 throw new ArgumentNullException ("node");
  24                         if (node.HasChildNodes)
  25                                 throw new ConfigurationException (Locale.GetText ("has child nodes"));
  26                 }
  27
  28                 protected static void CheckForDuplicateChildNodes (XmlNode node)
  29                 {
  30                         if (node == null)
  31                                 throw new ArgumentNullException ("node");
  32                         int n = node.ChildNodes.Count;
  33                         if (n > 1) {
  34                                 // (n - 1) last is unimportant
  35                                 for (int i=0; i < n - 1; i++) {
  36                                         string xname = node.ChildNodes [i].Name;
  37                                         // (i + 1) don't look back (again)
  38                                         for (int j=i+1; j < n; i++) {
  39                                                 if (xname == node.ChildNodes [j].Name)
  40                                                         throw new ConfigurationException (Locale.GetText ("found duplicate nodes"));
  41                                         }
  42                                 }
  43                         }
  44                 }
  45
  46                 protected static void CheckForUnrecognizedAttributes (XmlNode node)
  47                 {
  48                         if (node == null)
  49                                 throw new ArgumentNullException ("node");
  50                         if (node.Attributes.Count > 0)
  51                                 throw new ConfigurationException (Locale.GetText ("node has attributes"));
  52                 }
  53
  54                 protected static XmlNode GetAndRemoveAttribute (XmlNode node, string attrib, bool fRequired)
  55                 {
  56                         if (node == null)
  57                                 throw new ArgumentNullException ("node");
  58                         XmlNode xn = node.Attributes [attrib];
  59                         if (xn != null)
  60                                 node.Attributes.Remove (xn as XmlAttribute);
  61                         else if (fRequired)
  62                                 throw new ConfigurationException (Locale.GetText ("missing required attribute"));
  63                         return xn;
  64                 }
  65
  66                 protected static XmlNode GetAndRemoveBoolAttribute (XmlNode node, string attrib, bool fRequired, ref bool val)
  67                 {
  68                         XmlNode xn = GetAndRemoveAttribute (node, attrib, fRequired);
  69                         if (xn != null)
  70                                 val = Convert.ToBoolean (xn.Value);
  71                         return xn;
  72                 }
  73 #if WSE2
  74                 protected static XmlNode GetAndRemoveIntegerAttribute (XmlNode node, string attrib, bool fRequired, ref int val)
  75                 {
  76                         XmlNode xn = GetAndRemoveAttribute (node, attrib, fRequired);
  77                         if (xn != null)
  78                                 val = Convert.ToInt32 (xn.Value);
  79                         return xn;
  80                 }
  81 #endif
  82                 protected static XmlNode GetAndRemoveStringAttribute (XmlNode node, string attrib, bool fRequired, ref string val)
  83                 {
  84                         XmlNode xn = GetAndRemoveAttribute (node, attrib, fRequired);
  85                         if (xn != null)
  86                                 val = xn.Value;
  87                         return xn;
  88                 }
  89
  90                 protected static void ThrowIfElement (XmlNode node)
  91                 {
  92                         if (node == null)
  93                                 throw new ArgumentNullException ("node");
  94                         if (node.NodeType == XmlNodeType.Element)
  95                                 throw new ConfigurationException (Locale.GetText ("node is XmlNodeType.Element"));
  96                 }
  97
  98                 protected static void ThrowIfNotComment (XmlNode node)
  99                 {
 100                         if (node == null)
 101                                 throw new ArgumentNullException ("node");
 102                         if (node.NodeType != XmlNodeType.Comment)
 103                                 throw new ConfigurationException (Locale.GetText ("node isn't XmlNodeType.Comment"));
 104                 }
 105         }
 106 }