From: Richard Alimi <ralimi@us.ibm.com>

The following patch makes some enhancements to loading/saving the Xml2
format.

- Add streamed version of functionality for saving prims to Xml2
  format. The streamed version (optionally) allows for saving the
  prims whose positions appear within a particular bounding box.

- Expose stream versions of LoadPrimsFromXml2 and SavePrimsToXml2 in
  the Scene class

- Extend loading from Xml2 (the streamed version) to optionally start
  scripts for the loaded scene objects)

4 files changed, 106 insertions, 12 deletions

diff --git a/OpenSim/Region/Environment/Modules/World/Serialiser/IRegionSerialiser.cs b/OpenSim/Region/Environment/Modules/World/Serialiser/IRegionSerialiser.cs
index 8a13f2b..e76d40d 100644
--- a/OpenSim/Region/Environment/Modules/World/Serialiser/IRegionSerialiser.cs
+++ b/OpenSim/Region/Environment/Modules/World/Serialiser/IRegionSerialiser.cs
@@ -64,7 +64,8 @@ namespace OpenSim.Region.Environment.Modules.World.Serialiser
         /// </summary>
         /// <param name="scene"></param>
         /// <param name="reader"></param>
-        void LoadPrimsFromXml2(Scene scene, TextReader reader);
+        /// <param name="startScripts"></param>
+        void LoadPrimsFromXml2(Scene scene, TextReader reader, bool startScripts);
 
         /// <summary>
         /// Save prims in the xml2 format
@@ -74,6 +75,17 @@ namespace OpenSim.Region.Environment.Modules.World.Serialiser
         void SavePrimsToXml2(Scene scene, string fileName);
 
         /// <summary>
+        /// Save prims in the xml2 format, optionally specifying a bounding box for which
+        /// prims should be saved.  If both min and max vectors are LLVector3.Zero, then all prims
+        /// are exported.
+        /// </summary>
+        /// <param name="scene"></param>
+        /// <param name="stream"></param>
+        /// <param name="min"></param>
+        /// <param name="max"></param>
+        void SavePrimsToXml2(Scene scene, TextWriter stream, LLVector3 min, LLVector3 max);
+
+        /// <summary>
         /// Save a set of prims in the xml2 format
         /// </summary>
         /// <param name="entityList"></param>
@@ -81,6 +93,17 @@ namespace OpenSim.Region.Environment.Modules.World.Serialiser
         void SavePrimListToXml2(List<EntityBase> entityList, string fileName);
 
         /// <summary>
+        /// Save a set of prims in the xml2 format, optionally specifying a bounding box for which
+        /// prims should be saved.  If both min and max vectors are LLVector3.Zero, then all prims
+        /// are exported.
+        /// </summary>
+        /// <param name="entityList"></param>
+        /// <param name="stream"></param>
+        /// <param name="min"></param>
+        /// <param name="max"></param>
+        void SavePrimListToXml2(List<EntityBase> entityList, TextWriter stream, LLVector3 min, LLVector3 max);
+
+        /// <summary>
         /// Deserializes a scene object from its xml2 representation.  This does not load the object into the scene.
         /// </summary>
         /// <param name="xmlString"></param>
diff --git a/OpenSim/Region/Environment/Modules/World/Serialiser/SceneXmlLoader.cs b/OpenSim/Region/Environment/Modules/World/Serialiser/SceneXmlLoader.cs
index cd1fecb..0df19d9 100644
--- a/OpenSim/Region/Environment/Modules/World/Serialiser/SceneXmlLoader.cs
+++ b/OpenSim/Region/Environment/Modules/World/Serialiser/SceneXmlLoader.cs
@@ -143,7 +143,7 @@ namespace OpenSim.Region.Environment.Scenes
         /// <param name="fileName"></param>
         public static void LoadPrimsFromXml2(Scene scene, string fileName)
         {
-            LoadPrimsFromXml2(scene, new XmlTextReader(fileName));
+            LoadPrimsFromXml2(scene, new XmlTextReader(fileName), false);
         }
 
         /// <summary>
@@ -151,9 +151,10 @@ namespace OpenSim.Region.Environment.Scenes
         /// </summary>
         /// <param name="scene"></param>
         /// <param name="reader"></param>
-        public static void LoadPrimsFromXml2(Scene scene, TextReader reader)
+        /// <param name="startScripts"></param>
+        public static void LoadPrimsFromXml2(Scene scene, TextReader reader, bool startScripts)
         {
-            LoadPrimsFromXml2(scene, new XmlTextReader(reader));
+            LoadPrimsFromXml2(scene, new XmlTextReader(reader), startScripts);
         }
 
         /// <summary>
@@ -161,7 +162,8 @@ namespace OpenSim.Region.Environment.Scenes
         /// </summary>
         /// <param name="scene"></param>
         /// <param name="reader"></param>
-        protected static void LoadPrimsFromXml2(Scene scene, XmlTextReader reader)
+        /// <param name="startScripts"></param>
+        protected static void LoadPrimsFromXml2(Scene scene, XmlTextReader reader, bool startScripts)
         {
             XmlDocument doc = new XmlDocument();
             reader.WhitespaceHandling = WhitespaceHandling.None;
@@ -169,9 +171,17 @@ namespace OpenSim.Region.Environment.Scenes
             reader.Close();
             XmlNode rootNode = doc.FirstChild;
 
+            ICollection<SceneObjectGroup> sceneObjects = new List<SceneObjectGroup>();            
             foreach (XmlNode aPrimNode in rootNode.ChildNodes)
             {
-                CreatePrimFromXml2(scene, aPrimNode.OuterXml);
+                SceneObjectGroup obj = CreatePrimFromXml2(scene, aPrimNode.OuterXml);
+                if (obj != null && startScripts)
+                    sceneObjects.Add(obj);
+            }
+
+            foreach (SceneObjectGroup sceneObject in sceneObjects)
+            {
+                 sceneObject.CreateScriptInstances(0, true);
             }
         }
 
@@ -198,10 +208,36 @@ namespace OpenSim.Region.Environment.Scenes
             SavePrimListToXml2(EntityList, fileName);
         }
 
+        public static void SavePrimsToXml2(Scene scene, TextWriter stream, LLVector3 min, LLVector3 max)
+        {
+            List<EntityBase> EntityList = scene.GetEntities();
+
+            SavePrimListToXml2(EntityList, stream, min, max);
+        }
+
         public static void SavePrimListToXml2(List<EntityBase> entityList, string fileName)
         {
             FileStream file = new FileStream(fileName, FileMode.Create);
-            StreamWriter stream = new StreamWriter(file);
+            try
+            {
+                StreamWriter stream = new StreamWriter(file);
+                try
+                {
+                    SavePrimListToXml2(entityList, stream, LLVector3.Zero, LLVector3.Zero);
+                }
+                finally
+                {
+                    stream.Close();
+                }
+            }
+            finally
+            {
+                file.Close();
+            }
+        }
+
+        public static void SavePrimListToXml2(List<EntityBase> entityList, TextWriter stream, LLVector3 min, LLVector3 max)
+        {
             int primCount = 0;
             stream.WriteLine("<scene>\n");
 
@@ -209,13 +245,23 @@ namespace OpenSim.Region.Environment.Scenes
             {
                 if (ent is SceneObjectGroup)
                 {
-                    stream.WriteLine(((SceneObjectGroup)ent).ToXmlString2());
+                    SceneObjectGroup g = (SceneObjectGroup)ent;
+                    if (!min.Equals(LLVector3.Zero) || !max.Equals(LLVector3.Zero))
+                    {
+                        LLVector3 pos = g.RootPart.GetWorldPosition();
+                        if (min.X > pos.X || min.Y > pos.Y || min.Z > pos.Z)
+                            continue;
+                        if (max.X < pos.X || max.Y < pos.Y || max.Z < pos.Z)
+                            continue;
+                    }
+                    
+                    stream.WriteLine(g.ToXmlString2());
                     primCount++;
                 }
             }
             stream.WriteLine("</scene>\n");
-            stream.Close();
-            file.Close();
+            stream.Flush();
         }
+
     }
 }
diff --git a/OpenSim/Region/Environment/Modules/World/Serialiser/SerialiserModule.cs b/OpenSim/Region/Environment/Modules/World/Serialiser/SerialiserModule.cs
index ce59ecc..d722d68 100644
--- a/OpenSim/Region/Environment/Modules/World/Serialiser/SerialiserModule.cs
+++ b/OpenSim/Region/Environment/Modules/World/Serialiser/SerialiserModule.cs
@@ -102,9 +102,9 @@ namespace OpenSim.Region.Environment.Modules.World.Serialiser
             SceneXmlLoader.LoadPrimsFromXml2(scene, fileName);
         }
 
-        public void LoadPrimsFromXml2(Scene scene, TextReader reader)
+        public void LoadPrimsFromXml2(Scene scene, TextReader reader, bool startScripts)
         {
-            SceneXmlLoader.LoadPrimsFromXml2(scene, reader);
+            SceneXmlLoader.LoadPrimsFromXml2(scene, reader, startScripts);
         }
 
         public void SavePrimsToXml2(Scene scene, string fileName)
@@ -112,6 +112,11 @@ namespace OpenSim.Region.Environment.Modules.World.Serialiser
             SceneXmlLoader.SavePrimsToXml2(scene, fileName);
         }
 
+        public void SavePrimsToXml2(Scene scene, TextWriter stream, LLVector3 min, LLVector3 max)
+        {
+            SceneXmlLoader.SavePrimsToXml2(scene, stream, min, max);
+        }
+
         public SceneObjectGroup DeserializeGroupFromXml2(string xmlString)
         {
             return SceneXmlLoader.DeserializeGroupFromXml2(xmlString);
@@ -127,6 +132,11 @@ namespace OpenSim.Region.Environment.Modules.World.Serialiser
             SceneXmlLoader.SavePrimListToXml2(entityList, fileName);
         }
 
+        public void SavePrimListToXml2(List<EntityBase> entityList, TextWriter stream, LLVector3 min, LLVector3 max)
+        {
+            SceneXmlLoader.SavePrimListToXml2(entityList, stream, min, max);
+        }
+
         public List<string> SerialiseRegion(Scene scene, string saveDir)
         {
             List<string> results = new List<string>();
diff --git a/OpenSim/Region/Environment/Scenes/Scene.cs b/OpenSim/Region/Environment/Scenes/Scene.cs
index bd02b7e..4e7e764 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.cs
@@ -29,6 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Drawing;
 using System.Drawing.Imaging;
+using System.IO;
 using System.Threading;
 using System.Timers;
 using Axiom.Math;
@@ -1760,6 +1761,13 @@ namespace OpenSim.Region.Environment.Scenes
             m_serialiser.LoadPrimsFromXml2(this, fileName);
         }
 
+        public void LoadPrimsFromXml2(TextReader reader, bool startScripts)
+        {
+            m_log.InfoFormat("[SCENE]: Loading prims in xml2 format to region {0} from stream", RegionInfo.RegionName);            
+            
+            m_serialiser.LoadPrimsFromXml2(this, reader, startScripts);
+        }
+
         public void SavePrimsToXml2(string fileName)
         {
             m_log.InfoFormat("[SCENE]: Saving prims in xml2 format for region {0} to {1}", RegionInfo.RegionName, fileName);
@@ -1767,6 +1775,13 @@ namespace OpenSim.Region.Environment.Scenes
             m_serialiser.SavePrimsToXml2(this, fileName);
         }
 
+        public void SavePrimsToXml2(TextWriter stream, LLVector3 min, LLVector3 max)
+        {
+            m_log.InfoFormat("[SCENE]: Saving prims in xml2 format for region {0} to stream", RegionInfo.RegionName);
+            
+            m_serialiser.SavePrimsToXml2(this, stream, min, max);
+        }
+
         public void SaveNamedPrimsToXml2(string primName, string fileName)
         {
             m_log.InfoFormat(