mcs/class/System.Configuration/System.Configuration/ConfigurationLocation.cs

   1 //
   2 // System.Configuration.ConfigurationLocation.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //  Lluis Sanchez Gual (lluis@novell.com)
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining
   9 // a copy of this software and associated documentation files (the
  10 // "Software"), to deal in the Software without restriction, including
  11 // without limitation the rights to use, copy, modify, merge, publish,
  12 // distribute, sublicense, and/or sell copies of the Software, and to
  13 // permit persons to whom the Software is furnished to do so, subject to
  14 // the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be
  17 // included in all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  22 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  23 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26 //
  27 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  28 //
  29
  30 #if NET_2_0
  31
  32 using System.Xml;
  33 using System.IO;
  34
  35 namespace System.Configuration {
  36
  37         public class ConfigurationLocation
  38         {
  39                 static readonly char[] pathTrimChars = { '/' };
  40
  41                 string path;
  42                 Configuration configuration;
  43                 Configuration parent;
  44                 string xmlContent;
  45                 bool parentResolved;
  46                 bool allowOverride;
  47
  48                 internal ConfigurationLocation()
  49                 {
  50                 }
  51
  52                 internal ConfigurationLocation (string path, string xmlContent, Configuration parent, bool allowOverride)
  53                 {
  54                         if (!String.IsNullOrEmpty (path)) {
  55                                 switch (path [0]) {
  56                                         case ' ':
  57                                         case '.':
  58                                         case '/':
  59                                         case '\\':
  60                                                 throw new ConfigurationErrorsException ("<location> path attribute must be a relative virtual path.  It cannot start with any of ' ' '.' '/' or '\\'.");
  61                                 }
  62
  63                                 path = path.TrimEnd (pathTrimChars);
  64                         }
  65
  66                         this.path = path;
  67                         this.xmlContent = xmlContent;
  68                         this.parent = parent;
  69                         this.allowOverride = allowOverride;
  70                 }
  71
  72                 public string Path {
  73                         get { return path; }
  74                 }
  75
  76                 internal bool AllowOverride {
  77                         get { return allowOverride; }
  78                 }
  79
  80                 internal string XmlContent {
  81                         get { return xmlContent; }
  82                 }
  83
  84                 internal Configuration OpenedConfiguration {
  85                         get { return configuration; }
  86                 }
  87
  88                 public Configuration OpenConfiguration ()
  89                 {
  90                         if (configuration == null) {
  91                                 if (!parentResolved) {
  92                                         Configuration parentFile = parent.GetParentWithFile ();
  93                                         if (parentFile != null) {
  94                                                 string parentRelativePath = parent.ConfigHost.GetConfigPathFromLocationSubPath (parent.LocationConfigPath, path);
  95                                                 parent = parentFile.FindLocationConfiguration (parentRelativePath, parent);
  96                                         }
  97                                 }
  98
  99                                 configuration = new Configuration (parent, path);
 100                                 using (XmlTextReader tr = new ConfigXmlTextReader (new StringReader (xmlContent), path))
 101                                         configuration.ReadData (tr, allowOverride);
 102
 103                                 xmlContent = null;
 104                         }
 105                         return configuration;
 106                 }
 107
 108                 internal void SetParentConfiguration (Configuration parent)
 109                 {
 110                         parentResolved = true;
 111                         this.parent = parent;
 112                         if (configuration != null)
 113                                 configuration.Parent = parent;
 114                 }
 115         }
 116 }
 117
 118 #endif