XmlConfiguration.cs 4.8 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSimulator Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using System.IO;
  29. using System.Xml;
  30. namespace OpenSim.Framework.Configuration.XML
  31. {
  32. public class XmlConfiguration : IGenericConfig
  33. {
  34. private XmlDocument doc;
  35. private XmlNode rootNode;
  36. private XmlNode configNode;
  37. private string fileName;
  38. private bool createdFile = false;
  39. public void SetFileName(string file)
  40. {
  41. fileName = file;
  42. }
  43. private void LoadDataToClass()
  44. {
  45. rootNode = doc.SelectSingleNode("Root");
  46. if (null == rootNode)
  47. throw new Exception("Error: Invalid .xml File. Missing <Root>");
  48. configNode = rootNode.SelectSingleNode("Config");
  49. if (null == configNode)
  50. throw new Exception("Error: Invalid .xml File. <Root> should contain a <Config>");
  51. }
  52. public void LoadData()
  53. {
  54. lock (this)
  55. {
  56. doc = new XmlDocument();
  57. if (File.Exists(fileName))
  58. {
  59. XmlTextReader reader = new XmlTextReader(fileName);
  60. reader.WhitespaceHandling = WhitespaceHandling.None;
  61. doc.Load(reader);
  62. reader.Close();
  63. }
  64. else
  65. {
  66. createdFile = true;
  67. rootNode = doc.CreateNode(XmlNodeType.Element, "Root", String.Empty);
  68. doc.AppendChild(rootNode);
  69. configNode = doc.CreateNode(XmlNodeType.Element, "Config", String.Empty);
  70. rootNode.AppendChild(configNode);
  71. }
  72. LoadDataToClass();
  73. if (createdFile)
  74. {
  75. Commit();
  76. }
  77. }
  78. }
  79. public void LoadDataFromString(string data)
  80. {
  81. doc = new XmlDocument();
  82. doc.LoadXml(data);
  83. LoadDataToClass();
  84. }
  85. public string GetAttribute(string attributeName)
  86. {
  87. string result = null;
  88. if (configNode.Attributes[attributeName] != null)
  89. {
  90. result = ((XmlAttribute) configNode.Attributes.GetNamedItem(attributeName)).Value;
  91. }
  92. return result;
  93. }
  94. public bool SetAttribute(string attributeName, string attributeValue)
  95. {
  96. if (configNode.Attributes[attributeName] != null)
  97. {
  98. ((XmlAttribute) configNode.Attributes.GetNamedItem(attributeName)).Value = attributeValue;
  99. }
  100. else
  101. {
  102. XmlAttribute attri;
  103. attri = doc.CreateAttribute(attributeName);
  104. attri.Value = attributeValue;
  105. configNode.Attributes.Append(attri);
  106. }
  107. return true;
  108. }
  109. public void Commit()
  110. {
  111. if (string.IsNullOrEmpty(fileName))
  112. return;
  113. if (!Directory.Exists(Util.configDir()))
  114. {
  115. Directory.CreateDirectory(Util.configDir());
  116. }
  117. doc.Save(fileName);
  118. }
  119. public void Close()
  120. {
  121. configNode = null;
  122. rootNode = null;
  123. doc = null;
  124. }
  125. }
  126. }