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using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using OpenSim.Region.Environment.Interfaces;
using OpenSim.Region.Environment.Modules;
using OpenSim.Region.Environment.Scenes;
namespace OpenSim.Region.Environment
{
public class ModuleLoader
{
public Dictionary<string, Assembly> LoadedAssemblys = new Dictionary<string, Assembly>();
public List<IRegionModule> LoadedModules = new List<IRegionModule>();
public Dictionary<string, IRegionModule> LoadedSharedModules = new Dictionary<string, IRegionModule>();
public ModuleLoader()
{
}
/// <summary>
/// Should have a module factory?
/// </summary>
/// <param name="scene"></param>
public void CreateDefaultModules(Scene scene, string exceptModules)
{
IRegionModule module = new XferModule();
InitialiseModule(module, scene);
module = new ChatModule();
InitialiseModule(module, scene);
module = new AvatarProfilesModule();
InitialiseModule(module, scene);
LoadRegionModule("OpenSim.Region.ExtensionsScriptModule.dll", "ExtensionsScriptingModule", scene);
string lslPath = Path.Combine("ScriptEngines", "OpenSim.Region.ScriptEngine.DotNetEngine.dll");
LoadRegionModule(lslPath, "LSLScriptingModule", scene);
}
public void LoadDefaultSharedModules(string exceptModules)
{
DynamicTextureModule dynamicModule = new DynamicTextureModule();
LoadedSharedModules.Add(dynamicModule.GetName(), dynamicModule);
}
public void InitialiseSharedModules(Scene scene)
{
foreach (IRegionModule module in LoadedSharedModules.Values)
{
module.Initialise(scene);
scene.AddModule(module.GetName(), module); //should be doing this?
}
}
private void InitialiseModule(IRegionModule module, Scene scene)
{
module.Initialise(scene);
scene.AddModule(module.GetName(), module);
LoadedModules.Add(module);
}
/// <summary>
/// Loads/initialises a Module instance that can be used by mutliple Regions
/// </summary>
/// <param name="dllName"></param>
/// <param name="moduleName"></param>
/// <param name="scene"></param>
public void LoadSharedModule(string dllName, string moduleName)
{
IRegionModule module = LoadModule(dllName, moduleName);
if (module != null)
{
LoadedSharedModules.Add(module.GetName(), module);
}
}
public void LoadRegionModule(string dllName, string moduleName, Scene scene)
{
IRegionModule module = LoadModule(dllName, moduleName);
if (module != null)
{
InitialiseModule(module, scene);
}
}
/// <summary>
/// Loads a external Module (if not already loaded) and creates a new instance of it.
/// </summary>
/// <param name="dllName"></param>
/// <param name="moduleName"></param>
/// <param name="scene"></param>
public IRegionModule LoadModule(string dllName, string moduleName)
{
Assembly pluginAssembly = null;
if (LoadedAssemblys.ContainsKey(dllName))
{
pluginAssembly = LoadedAssemblys[dllName];
}
else
{
pluginAssembly = Assembly.LoadFrom(dllName);
LoadedAssemblys.Add(dllName, pluginAssembly);
}
IRegionModule module = null;
foreach (Type pluginType in pluginAssembly.GetTypes())
{
if (pluginType.IsPublic)
{
if (!pluginType.IsAbstract)
{
Type typeInterface = pluginType.GetInterface("IRegionModule", true);
if (typeInterface != null)
{
module =
(IRegionModule) Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
break;
}
typeInterface = null;
}
}
}
pluginAssembly = null;
if ((module != null) || (module.GetName() == moduleName))
{
return module;
}
return null;
}
public void PostInitialise()
{
foreach (IRegionModule module in LoadedSharedModules.Values)
{
module.PostInitialise();
}
foreach (IRegionModule module in LoadedModules)
{
module.PostInitialise();
}
}
public void ClearCache()
{
LoadedAssemblys.Clear();
}
}
}
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