mcs/nunit24/ClientUtilities/util/XmlSettingsStorage.cs

   1 // ****************************************************************\r
   2 // Copyright 2007, Charlie Poole\r
   3 // This is free software licensed under the NUnit license. You may\r
   4 // obtain a copy of the license at http://nunit.org/?p=license&r=2.4\r
   5 // ****************************************************************\r
   6 \r
   7 using System;\r
   8 using System.IO;\r
   9 using System.Xml;\r
  10 using System.Collections;\r
  11 using System.ComponentModel;\r
  12 \r
  13 namespace NUnit.Util\r
  14 {\r
  15         /// <summary>\r
  16         /// Summary description for XmlSettingsStorage.\r
  17         /// </summary>\r
  18         public class XmlSettingsStorage : MemorySettingsStorage\r
  19         {\r
  20                 private string filePath;\r
  21 \r
  22                 public XmlSettingsStorage( string filePath )\r
  23                 {\r
  24                         this.filePath = filePath;\r
  25                 }\r
  26 \r
  27                 public override void LoadSettings()\r
  28                 {\r
  29                         FileInfo info = new FileInfo(filePath);\r
  30                         if ( !info.Exists || info.Length == 0 )\r
  31                                 return;\r
  32 \r
  33                         try\r
  34                         {\r
  35                                 XmlDocument doc = new XmlDocument();\r
  36                                 doc.Load( filePath );\r
  37 \r
  38                                 foreach( XmlElement element in doc.DocumentElement["Settings"].ChildNodes )\r
  39                                 {\r
  40                                         if ( element.Name != "Setting" )\r
  41                                                 throw new ApplicationException( "Unknown element in settings file: " + element.Name );\r
  42 \r
  43                                         if ( !element.HasAttribute( "name" ) )\r
  44                                                 throw new ApplicationException( "Setting must have 'name' attribute" );\r
  45 \r
  46                                         if ( !element.HasAttribute( "value" ) )\r
  47                                                 throw new ApplicationException( "Setting must have 'value' attribute" );\r
  48 \r
  49                                         settings[ element.GetAttribute( "name" ) ] = element.GetAttribute( "value" );\r
  50                                 }\r
  51                         }\r
  52                         catch( Exception ex )\r
  53                         {\r
  54                                 throw new ApplicationException( "Error loading settings file", ex );\r
  55                         }\r
  56                 }\r
  57 \r
  58                 public override void SaveSettings()\r
  59                 {\r
  60                         string dirPath = Path.GetDirectoryName( filePath );\r
  61                         if ( !Directory.Exists( dirPath ) )\r
  62                                 Directory.CreateDirectory( dirPath );\r
  63 \r
  64                         XmlTextWriter writer = new XmlTextWriter(  filePath, System.Text.Encoding.UTF8 );\r
  65                         writer.Formatting = Formatting.Indented;\r
  66 \r
  67                         writer.WriteProcessingInstruction( "xml", "version=\"1.0\"" );\r
  68                         writer.WriteStartElement( "NUnitSettings" );\r
  69                         writer.WriteStartElement( "Settings" );\r
  70 \r
  71                         ArrayList keys = new ArrayList( settings.Keys );\r
  72                         keys.Sort();\r
  73 \r
  74                         foreach( string name in keys )\r
  75                         {\r
  76                                 object val = settings[name];\r
  77                                 if ( val != null )\r
  78                                 {\r
  79                                         writer.WriteStartElement( "Setting");\r
  80                                         writer.WriteAttributeString( "name", name );\r
  81                                         writer.WriteAttributeString( "value", val.ToString() );\r
  82                                         writer.WriteEndElement();\r
  83                                 }\r
  84                         }\r
  85 \r
  86                         writer.WriteEndElement();\r
  87                         writer.WriteEndElement();\r
  88                         writer.Close();\r
  89                 }\r
  90         }\r
  91 }\r