DearchiveScenesGroup.cs

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 *       derived from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using OpenSim.Region.Framework.Scenes;
using OpenMetaverse;
using System.Drawing;
using log4net;
using System.Reflection;
using OpenSim.Framework.Serialization;

namespace OpenSim.Region.CoreModules.World.Archiver
{
    public class DearchiveScenesInfo
    {
        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public class RegionInfo
        {
            public string Directory { get; set; }

            public Point Location { get; set; }

            public string OriginalID { get; set; }

            public Scene Scene { get; set; }

            public Vector3 RegionSize { get; set; }

            public RegionInfo()
            {
                RegionSize = new Vector3(256f,256f,float.MaxValue);
            }
        }

        public Boolean MultiRegionFormat { get; set; }

        protected Dictionary<string, RegionInfo> m_directory2region = new Dictionary<string, RegionInfo>();

        protected Dictionary<UUID, RegionInfo> m_newId2region = new Dictionary<UUID, RegionInfo>();

        public int LoadedCreationDateTime { get; set; }
        public string DefaultOriginalID { get; set; }

        // These variables are used while reading the archive control file
        protected int? m_curY = null;
        protected int? m_curX = null;
        protected RegionInfo m_curRegion;


        public DearchiveScenesInfo()
        {
            MultiRegionFormat = false;
        }


        // The following methods are used while reading the archive control file

        public void StartRow()
        {
            m_curY = (m_curY == null) ? 0 : m_curY + 1;
            m_curX = null;
        }

        public void StartRegion()
        {
            m_curX = (m_curX == null) ? 0 : m_curX + 1;
           // Note: this doesn't mean we have a real region in this location; this could just be a "hole"
        }

        public void SetRegionOriginalID(string id)
        {
            m_curRegion = new RegionInfo();
            int x = (int)((m_curX == null) ? 0 : m_curX);
            int y = (int)((m_curY == null) ? 0 : m_curY);

            m_curRegion.Location = new Point(x, y);
            m_curRegion.OriginalID = id;
            // 'curRegion' will be saved in 'm_directory2region' when SetRegionDir() is called
        }

        public void SetRegionDirectory(string directory)
        {
            if(m_curRegion != null)
            {
                m_curRegion.Directory = directory;
                m_directory2region[directory] = m_curRegion;
            }
        }

        public void SetRegionSize(Vector3 size)
        {
            if(m_curRegion != null)
                m_curRegion.RegionSize = size;
        }

        public void SetSimulatorScenes(Scene rootScene, ArchiveScenesGroup simulatorScenes)
        {
            foreach (RegionInfo archivedRegion in m_directory2region.Values)
            {
                Point location = new Point((int)rootScene.RegionInfo.RegionLocX,
                            (int)rootScene.RegionInfo.RegionLocY);

                location.Offset(archivedRegion.Location);

                Scene scene;
                if (simulatorScenes.TryGetScene(location, out scene))
                {
                    archivedRegion.Scene = scene;
                    m_newId2region[scene.RegionInfo.RegionID] = archivedRegion;
                }
                else
                {
                    m_log.WarnFormat("[ARCHIVER]: Not loading archived region {0} because there's no existing region at location {1},{2}",
                        archivedRegion.Directory, location.X, location.Y);
                }
            }
        }

        public bool GetRegionFromPath(string fullPath, out Scene scene, out string relativePath)
        {
            scene = null;
            relativePath = fullPath;

            if (!MultiRegionFormat)
            {
                if (m_newId2region.Count > 0)
                    scene = m_newId2region.First().Value.Scene;
                return true;
            }

            if (!fullPath.StartsWith(ArchiveConstants.REGIONS_PATH))
                return true;    // this file doesn't belong to a region

            string[] parts = fullPath.Split(new Char[] { '/' }, 3);
            if (parts.Length != 3)
                return false;
            string regionDirectory = parts[1];
            relativePath = parts[2];
            
            RegionInfo region;
            if (m_directory2region.TryGetValue(regionDirectory, out region))
            {
                scene = region.Scene;
                return (scene != null);
            }
            else
            {
                return false;
            }
        }

        public string GetOriginalRegionID(UUID newID)
        {
            RegionInfo region;
            if (m_newId2region.TryGetValue(newID, out region))
                return region.OriginalID;
            else
                return DefaultOriginalID;
        }

        public List<UUID> GetLoadedScenes()
        {
            return m_newId2region.Keys.ToList();
        }

        public int GetScenesCount()
        {
            return m_directory2region.Count;
        }
    }
}