pinvokerepository.cs

c#源代码

//
// SharpDevelop PInvoke add-in.
//
// Copyright (C) 2005 Matthew Ward
//
// 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
//
// Matthew Ward ([e-mail])


using System;
using System.Collections;
using System.IO;
using System.Reflection;
using System.Xml;

namespace ICSharpCode.PInvokeAddIn
{
	/// <summary>
	/// Represents the repository of pinvoke information.
	/// </summary>
	/// <remarks>
	/// All the main data is stored at http://www.pinvoke.net.  
	/// This class contains function names and module names for the drop 
	/// down lists read from the "signatures.xml" config file.
	/// </remarks>
	public sealed class PInvokeRepository
	{
		static string[] functionNames;
		static string[] moduleNames;
		static PInvokeRepository repository;
		
		PInvokeRepository()
		{
		}
		
		public static PInvokeRepository Instance
		{
			get {
				if (repository == null) {
					repository = new PInvokeRepository();
				}
				return repository;
			}
		}
		
		public string[] GetSupportedLanguages()
		{
			return new string[] {"C#", "VB"};
		}
		
		public string[] GetFunctionNames()
		{
			if (functionNames == null) {
				ReadConfig();
			}
			
			return functionNames;
		}
		
		public string[] GetModuleNames()
		{
			if (moduleNames == null) {
				ReadConfig();
			}
			
			return moduleNames;
		}
		
		/// <summary>
        /// Gets the folder where this assembly was loaded from.
        /// </summary>
        /// <returns>The folder where this assembly was loaded.</returns>
        string GetAssemblyFolder()
        {
        	Assembly assembly = GetType().Assembly;
        	
        	string assemblyFilename = assembly.CodeBase.Replace("file:///", "");
        	string folder = Path.GetDirectoryName(assemblyFilename);
        
        	return folder;
        }  
        
        void ReadConfig()
        {
        	string configFile = Path.Combine(GetAssemblyFolder(), "signatures.xml");
        	
        	XmlDocument doc = new XmlDocument();
        	doc.Load(configFile);
        	
        	ArrayList moduleArrayList = new ArrayList();
        	ArrayList functionArrayList = new ArrayList();
        	
        	foreach(XmlElement moduleElement in doc.DocumentElement.SelectNodes("//module"))
        	{
        		XmlAttribute moduleName = (XmlAttribute)moduleElement.SelectSingleNode("@name");
        		moduleArrayList.Add(moduleName.Value);
        		
        		foreach(XmlAttribute functionName in moduleElement.SelectNodes("function/@name"))
        		{
        			functionArrayList.Add(functionName.Value);
        		}
        	}

        	moduleNames = new string[moduleArrayList.Count];
        	moduleArrayList.Sort();
        	moduleArrayList.CopyTo(moduleNames);
        	
        	functionNames = new string[functionArrayList.Count];
        	functionArrayList.Sort();
        	functionArrayList.CopyTo(functionNames);
        }
	}
}