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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 OpenSim 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*/
28using System;
29using System.IO;
30using System.Reflection;
31using OpenSim.Framework.Console;
32
33namespace OpenSim.Grid.ScriptServer
34{
35 public class ScriptEngineLoader
36 {
37 private LogBase m_log;
38
39 public ScriptEngineLoader(LogBase logger)
40 {
41 m_log = logger;
42 }
43
44 public ScriptEngineInterface LoadScriptEngine(string EngineName)
45 {
46 ScriptEngineInterface ret = null;
47 try
48 {
49 ret =
50 LoadAndInitAssembly(
51 Path.Combine("ScriptEngines", "OpenSim.Region.ScriptEngine." + EngineName + ".dll"),
52 "OpenSim.Region.ScriptEngine." + EngineName + ".ScriptEngine");
53 }
54 catch (Exception e)
55 {
56 m_log.Error("ScriptEngine",
57 "Error loading assembly \"" + EngineName + "\": " + e.Message + ", " +
58 e.StackTrace.ToString());
59 }
60 return ret;
61 }
62
63 /// <summary>
64 /// Does actual loading and initialization of script Assembly
65 /// </summary>
66 /// <param name="FreeAppDomain">AppDomain to load script into</param>
67 /// <param name="FileName">FileName of script assembly (.dll)</param>
68 /// <returns></returns>
69 private ScriptEngineInterface LoadAndInitAssembly(string FileName, string NameSpace)
70 {
71 //Common.SendToDebug("Loading ScriptEngine Assembly " + FileName);
72 // Load .Net Assembly (.dll)
73 // Initialize and return it
74
75 // TODO: Add error handling
76
77 Assembly a;
78 //try
79 //{
80
81
82 // Load to default appdomain (temporary)
83 a = Assembly.LoadFrom(FileName);
84 // Load to specified appdomain
85 // TODO: Insert security
86 //a = FreeAppDomain.Load(FileName);
87 //}
88 //catch (Exception e)
89 //{
90 // m_log.Error("ScriptEngine", "Error loading assembly \"" + FileName + "\": " + e.ToString());
91 //}
92
93
94 //Console.WriteLine("Loading: " + FileName);
95 //foreach (Type _t in a.GetTypes())
96 //{
97 // Console.WriteLine("Type: " + _t.ToString());
98 //}
99
100 Type t;
101 //try
102 //{
103 t = a.GetType(NameSpace, true);
104 //}
105 //catch (Exception e)
106 //{
107 // m_log.Error("ScriptEngine", "Error initializing type \"" + NameSpace + "\" from \"" + FileName + "\": " + e.ToString());
108 //}
109
110 ScriptEngineInterface ret;
111 //try
112 //{
113 ret = (ScriptEngineInterface) Activator.CreateInstance(t);
114 //}
115 //catch (Exception e)
116 //{
117 // m_log.Error("ScriptEngine", "Error initializing type \"" + NameSpace + "\" from \"" + FileName + "\": " + e.ToString());
118 //}
119
120 return ret;
121 }
122 }
123}
124