1 files changed, 160 insertions, 0 deletions

diff --git a/OpenSim/Region/Framework/Scenes/Serialization/CoalescedSceneObjectsSerializer.cs b/OpenSim/Region/Framework/Scenes/Serialization/CoalescedSceneObjectsSerializer.cs
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+++ b/OpenSim/Region/Framework/Scenes/Serialization/CoalescedSceneObjectsSerializer.cs
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+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
+using System.Reflection;
+using System.Xml;
+using log4net;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.Framework.Scenes.Serialization
+{
+    /// <summary>
+    /// Serialize and deserialize coalesced scene objects.
+    /// </summary>
+    /// <remarks>
+    /// Deserialization not yet here.
+    /// </remarks>
+    public class CoalescedSceneObjectsSerializer
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);        
+
+        /// <summary>
+        /// Serialize coalesced objects to Xml
+        /// </summary>
+        /// <param name="coa"></param>
+        /// <returns></returns>
+        public static string ToXml(CoalescedSceneObjects coa)
+        {            
+            using (StringWriter sw = new StringWriter())
+            {
+                using (XmlTextWriter writer = new XmlTextWriter(sw))
+                {                                        
+                    Vector3 size;
+                    
+                    List<SceneObjectGroup> coaObjects = coa.Objects;
+                    
+//                    m_log.DebugFormat(
+//                        "[COALESCED SCENE OBJECTS SERIALIZER]: Writing {0} objects for coalesced object", 
+//                        coaObjects.Count);
+                    
+                    // This is weak - we're relying on the set of coalesced objects still being identical
+                    Vector3[] offsets = coa.GetSizeAndOffsets(out size);
+
+                    writer.WriteStartElement("CoalescedObject");
+                    
+                    writer.WriteAttributeString("x", size.X.ToString());
+                    writer.WriteAttributeString("y", size.Y.ToString());
+                    writer.WriteAttributeString("z", size.Z.ToString());                    
+                    
+                    // Embed the offsets into the group XML
+                    for (int i = 0; i < coaObjects.Count; i++)
+                    {
+                        SceneObjectGroup obj = coaObjects[i];
+                        
+//                        m_log.DebugFormat(
+//                            "[COALESCED SCENE OBJECTS SERIALIZER]: Writing offset for object {0}, {1}", 
+//                            i, obj.Name);                        
+                        
+                        writer.WriteStartElement("SceneObjectGroup");
+                        writer.WriteAttributeString("offsetx", offsets[i].X.ToString());
+                        writer.WriteAttributeString("offsety", offsets[i].Y.ToString());
+                        writer.WriteAttributeString("offsetz", offsets[i].Z.ToString());
+                        
+                        SceneObjectSerializer.ToOriginalXmlFormat(obj, writer, true);
+                        
+                        writer.WriteEndElement(); // SceneObjectGroup
+                    }  
+                    
+                    writer.WriteEndElement(); // CoalescedObject
+                }
+
+                string output = sw.ToString();
+                
+//                Console.WriteLine(output);
+                
+                return output;
+            }
+        }
+        
+        public static bool TryFromXml(string xml, out CoalescedSceneObjects coa)
+        {
+//            m_log.DebugFormat("[COALESCED SCENE OBJECTS SERIALIZER]: TryFromXml() deserializing {0}", xml);
+            
+            coa = null;
+            
+            using (StringReader sr = new StringReader(xml))
+            {                
+                using (XmlTextReader reader = new XmlTextReader(sr))
+                {
+                    try
+                    {
+                        reader.Read();
+                        if (reader.Name != "CoalescedObject")
+                        {
+    //                        m_log.DebugFormat(
+    //                            "[COALESCED SCENE OBJECTS SERIALIZER]: TryFromXml() root element was {0} so returning false", 
+    //                            reader.Name);
+                            
+                            return false;
+                        }
+                        
+                        coa = new CoalescedSceneObjects(UUID.Zero);                    
+                        reader.Read();                                            
+                        
+                        while (reader.NodeType != XmlNodeType.EndElement && reader.Name != "CoalescedObject")
+                        {
+                            if (reader.Name == "SceneObjectGroup")
+                            {
+                                string soXml = reader.ReadOuterXml();
+                                coa.Add(SceneObjectSerializer.FromOriginalXmlFormat(soXml));
+                            }
+                        }
+                        
+                        reader.ReadEndElement(); // CoalescedObject
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat(
+                            "[COALESCED SCENE OBJECTS SERIALIZER]: Deserialization of xml failed with {0} {1}", 
+                            e.Message, e.StackTrace);
+                        
+                        return false;
+                    }                        
+                }
+            }
+            
+            return true;
+        }
+    }
+}
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