mcs/class/System.Configuration/System.Configuration/SectionInfo.cs

   1 //
   2 // System.Configuration.SectionInfo.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez (lluis@novell.com)
   6 //
   7 // Permission is hereby granted, free of charge, to any person obtaining
   8 // a copy of this software and associated documentation files (the
   9 // "Software"), to deal in the Software without restriction, including
  10 // without limitation the rights to use, copy, modify, merge, publish,
  11 // distribute, sublicense, and/or sell copies of the Software, and to
  12 // permit persons to whom the Software is furnished to do so, subject to
  13 // the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be
  16 // included in all copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  22 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25 //
  26 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  27 //
  28 #if NET_2_0
  29 using System;
  30 using System.Collections;
  31 using System.Collections.Specialized;
  32 using System.Xml;
  33 using System.IO;
  34
  35 namespace System.Configuration
  36 {
  37         internal class SectionInfo: ConfigInfo
  38         {
  39                 public bool AllowLocation = true;
  40                 public ConfigurationAllowDefinition AllowDefinition = ConfigurationAllowDefinition.Everywhere;
  41
  42                 public SectionInfo ()
  43                 {
  44                 }
  45
  46                 public SectionInfo (string sectionName, string typeName,
  47                                     bool allowLocation, ConfigurationAllowDefinition allowDefinition)
  48                 {
  49                         Name = sectionName;
  50                         TypeName = typeName;
  51                         AllowLocation = allowLocation;
  52                         AllowDefinition = allowDefinition;
  53                 }
  54
  55                 public override bool HasDataContent (Configuration config)
  56                 {
  57                         return config.GetSectionInstance (this, false) != null || config.GetSectionXml (this) != null;
  58                 }
  59
  60                 public override bool HasConfigContent (Configuration cfg)
  61                 {
  62                         return StreamName == cfg.FileName;
  63                 }
  64
  65                 public override void ReadConfig (Configuration cfg, string streamName, XmlTextReader reader)
  66                 {
  67                         ConfigurationAllowDefinition allowDefinition;
  68                         StreamName = streamName;
  69
  70                         while (reader.MoveToNextAttribute ()) {
  71                                 switch (reader.Name)
  72                                 {
  73                                         case "allowLocation":
  74                                                 string allowLoc = reader.Value;
  75                                                 AllowLocation = (allowLoc == "true");
  76                                                 if (!AllowLocation && allowLoc != "false")
  77                                                         ThrowException ("Invalid attribute value", reader);
  78                                                 break;
  79
  80                                         case "allowDefinition":
  81                                                 string allowDef = reader.Value;
  82                                                 try {
  83                                                         allowDefinition = (ConfigurationAllowDefinition) Enum.Parse (
  84                                                                            typeof (ConfigurationAllowDefinition), allowDef);
  85                                                 } catch {
  86                                                         ThrowException ("Invalid attribute value", reader);
  87                                                 }
  88                                                 break;
  89
  90                                         case "type":
  91                                                 TypeName = reader.Value;
  92                                                 break;
  93
  94                                         case "name":
  95                                                 Name = reader.Value;
  96                                                 if (Name == "location")
  97                                                         ThrowException ("location is a reserved section name", reader);
  98                                                 break;
  99
 100                                         default:
 101                                                 ThrowException ("Unrecognized attribute.", reader);
 102                                                 break;
 103                                 }
 104                         }
 105
 106                         if (Name == null || TypeName == null)
 107                                 ThrowException ("Required attribute missing", reader);
 108
 109                         reader.MoveToElement();
 110                         reader.Skip ();
 111                 }
 112
 113                 public override void WriteConfig (Configuration cfg, XmlWriter writer, ConfigurationSaveMode mode)
 114                 {
 115                         writer.WriteStartElement ("section");
 116                         writer.WriteAttributeString ("name", Name);
 117                         writer.WriteAttributeString ("type", TypeName);
 118                         if (!AllowLocation)
 119                                 writer.WriteAttributeString ("allowLocation", "false");
 120                         if (AllowDefinition != ConfigurationAllowDefinition.Everywhere)
 121                                 writer.WriteAttributeString ("allowDefinition", AllowDefinition.ToString ());
 122                         writer.WriteEndElement ();
 123                 }
 124
 125                 public override void ReadData (Configuration config, XmlTextReader reader)
 126                 {
 127                         config.SetSectionXml (this, reader.ReadOuterXml ());
 128                 }
 129
 130                 public override void WriteData (Configuration config, XmlWriter writer, ConfigurationSaveMode mode)
 131                 {
 132                         string xml;
 133
 134                         ConfigurationSection section = config.GetSectionInstance (this, false);
 135                         if (section != null) {
 136                                 ConfigurationSection parentSection = config.Parent != null ? config.Parent.GetSectionInstance (this, false) : null;
 137                                 xml = section.SerializeSection (parentSection, Name, mode);
 138                         }
 139                         else {
 140                                 xml = config.GetSectionXml (this);
 141                         }
 142
 143                         if (xml != null) {
 144                                 XmlTextReader tr = new XmlTextReader (new StringReader (xml));
 145                                 writer.WriteNode (tr, true);
 146                                 tr.Close ();
 147                         }
 148                 }
 149         }
 150 }
 151
 152 #endif