From ca8de716adf7a191a749963fe5a974e3d8d4ca75 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Fri, 21 Jan 2005 01:09:09 +0000
Subject: Initial checkin

---
 PluginControl.cs | 217 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 217 insertions(+)
 create mode 100644 PluginControl.cs

(limited to 'PluginControl.cs')

diff --git a/PluginControl.cs b/PluginControl.cs
new file mode 100644
index 0000000..82cbd39
--- /dev/null
+++ b/PluginControl.cs
@@ -0,0 +1,217 @@
+// GfxEd8
+// Copyright (C) 2004  Ian Cowburn
+// 
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+//
+// $Id$
+//
+using System;
+using System.IO;
+using System.Xml;
+using System.Xml.Serialization;
+using System.Reflection;
+using System.Collections;
+using System.Collections.Specialized;
+using GfxEdInterface;
+using System.Diagnostics;
+
+namespace GfxEd8
+{
+	/// <summary>
+	/// Controls the plugins for the editor
+	/// </summary>
+	public class PluginControl
+	{
+		// -------------------------------------------
+		// PUBLIC
+		// -------------------------------------------
+
+		/// <summary>
+		/// Creates the plugins
+		/// </summary>
+		/// <param name="config">The XML config file</param>
+		public static void Initialise(string config)
+		{
+			XmlDocument xml=new XmlDocument();
+			
+			xml.PreserveWhitespace=false;
+			
+			//Debugger.Break();
+			
+			xml.Load(config);
+			
+			XmlNode node=xml.FirstChild;
+			
+			if (node.Name!="Config")
+			{
+				throw new Exception("Illegal element " + node.Name + " in config");
+			}
+			
+			m_names=new StringCollection();
+			m_interface=new Hashtable();
+			
+			foreach (XmlNode n in node.ChildNodes)
+			{
+				if (n.Name!="Import")
+				{
+					throw new Exception("Illegal element " + node.Name + " in config");
+				}
+
+				PluginData plg=new PluginData();
+				
+				XmlNode dll=n.Attributes.GetNamedItem("dll");
+				XmlNode name=n.Attributes.GetNamedItem("name");
+				
+				if (dll==null || name==null)
+				{
+					throw new Exception("Missing attributes in Import config");
+				}
+				
+				string path=Path.GetFullPath(dll.Value);
+				
+				try
+				{
+					plg.asm=Assembly.LoadFile(path);
+				}
+				catch (System.Security.SecurityException)
+				{
+					throw new Exception("Do not have permission to load:\n"+path);
+				}
+				catch (Exception)
+				{
+					throw new Exception("Could not load plugin:\n"+path);
+				}
+				
+				try
+				{
+					plg.iface=(IPlugin)plg.asm.CreateInstance(name.Value);
+				}
+				catch (InvalidCastException)
+				{
+					throw new Exception("The plugin " + dll.Value+" is incorrect");
+				}
+				
+				Validate(plg.iface,path);
+				
+				m_names.Add(plg.iface.ShortName);
+				m_interface[plg.iface.ShortName]=plg;
+			}
+		}
+		
+		
+		public static StringCollection Names
+		{
+			get {return m_names;}
+		}
+		
+		public static IPlugin Get(string name)
+		{
+			PluginData d=(PluginData)m_interface[name];
+
+			if (d!=null)
+			{
+				return d.iface;
+			}
+			else
+			{
+				return null;
+			}
+		}
+		
+		public static Assembly GetAssembly(string name)
+		{
+			PluginData d=(PluginData)m_interface[name];
+			
+			if (d!=null)
+			{
+				return d.asm;
+			}
+			else
+			{
+				return null;
+			}
+		}
+		
+		public static string Version(string name)
+		{
+			Assembly a=GetAssembly(name);
+			
+			if (a==null)
+			{
+				return "0.0";
+			}
+			
+			AssemblyName n=a.GetName();
+			
+			return n.Version.Major.ToString()+"."+n.Version.Minor.ToString();
+		}
+		
+		// -------------------------------------------
+		// PRIVATE
+		// -------------------------------------------
+		private static StringCollection		m_names=null;
+		private static Hashtable			m_interface=null;
+		
+		private class PluginData
+		{
+			public PluginData()
+			{
+				asm=null;
+				iface=null;
+			}
+			
+			public Assembly	asm;
+			public IPlugin	iface;
+		}
+		
+		private static void Validate(IPlugin p, string path)
+		{
+			foreach (SpriteSize s in p.AllowedSizes)
+			{
+				if (s==null)
+				{
+					throw new Exception("Sprite Sizes incorrecly defined in\n"+path);
+				}
+			}
+
+			foreach (Colour c in p.Palette)
+			{
+				if (c==null)
+				{
+					throw new Exception("Sprite Sizes incorrecly defined in\n"+path);
+				}
+			}
+			
+			if (p.Palette.Length<p.MaxColours)
+			{
+				throw new Exception("Not enough colours defined in\n"+path);
+			}
+
+			if (p.SprPalEditable.Length!=p.MaxColours)
+			{
+				throw new Exception("Wrong editable colour indicators in\n"+path);
+			}
+
+			if (p.SprPalCommon.Length!=p.MaxColours)
+			{
+				throw new Exception("Wrong common colour indicators in\n"+path);
+			}
+		}
+		
+		private PluginControl()
+		{
+		}
+	}
+}
-- 
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