SerialiseObjects.cs 4.6 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.Collections.Generic;
  28. using System.IO;
  29. using System.IO.Compression;
  30. using System.Text;
  31. using System.Xml;
  32. using OpenSim.Region.Framework.Scenes;
  33. using OpenSim.Region.Framework.Scenes.Serialization;
  34. namespace OpenSim.Region.CoreModules.World.Serialiser
  35. {
  36. internal class SerialiseObjects : IFileSerialiser
  37. {
  38. #region IFileSerialiser Members
  39. public string WriteToFile(Scene scene, string dir)
  40. {
  41. string targetFileName = dir + "objects.xml";
  42. SaveSerialisedToFile(targetFileName, scene);
  43. return "objects.xml";
  44. }
  45. #endregion
  46. public void SaveSerialisedToFile(string fileName, Scene scene)
  47. {
  48. string xmlstream = GetObjectXml(scene);
  49. MemoryStream stream = ReformatXmlString(xmlstream);
  50. stream.Seek(0, SeekOrigin.Begin);
  51. CreateXmlFile(stream, fileName);
  52. stream.Seek(0, SeekOrigin.Begin);
  53. CreateCompressedXmlFile(stream, fileName);
  54. }
  55. private static MemoryStream ReformatXmlString(string xmlstream)
  56. {
  57. MemoryStream stream = new MemoryStream();
  58. XmlTextWriter formatter = new XmlTextWriter(stream, Encoding.UTF8);
  59. XmlDocument doc = new XmlDocument();
  60. doc.LoadXml(xmlstream);
  61. formatter.Formatting = Formatting.Indented;
  62. doc.WriteContentTo(formatter);
  63. formatter.Flush();
  64. return stream;
  65. }
  66. private static string GetObjectXml(Scene scene)
  67. {
  68. string xmlstream = "<scene>";
  69. List<EntityBase> EntityList = scene.GetEntities();
  70. List<string> EntityXml = new List<string>();
  71. foreach (EntityBase ent in EntityList)
  72. {
  73. if (ent is SceneObjectGroup)
  74. {
  75. EntityXml.Add(SceneObjectSerializer.ToXml2Format((SceneObjectGroup)ent));
  76. }
  77. }
  78. EntityXml.Sort();
  79. foreach (string xml in EntityXml)
  80. xmlstream += xml;
  81. xmlstream += "</scene>";
  82. return xmlstream;
  83. }
  84. private static void CreateXmlFile(MemoryStream xmlStream, string fileName)
  85. {
  86. FileStream objectsFile = new FileStream(fileName, FileMode.Create);
  87. xmlStream.WriteTo(objectsFile);
  88. objectsFile.Flush();
  89. objectsFile.Close();
  90. }
  91. private static void CreateCompressedXmlFile(MemoryStream xmlStream, string fileName)
  92. {
  93. #region GZip Compressed Version
  94. FileStream objectsFileCompressed = new FileStream(fileName + ".gzs", FileMode.Create);
  95. MemoryStream gzipMSStream = new MemoryStream();
  96. GZipStream gzipStream = new GZipStream(gzipMSStream, CompressionMode.Compress);
  97. xmlStream.WriteTo(gzipStream);
  98. gzipMSStream.WriteTo(objectsFileCompressed);
  99. objectsFileCompressed.Flush();
  100. objectsFileCompressed.Close();
  101. #endregion
  102. }
  103. }
  104. }