codetemplateloader.cs

CSharpDevelop：这是一个包含源代码的C#、VB.NET的编辑器。

// TemplateLoader.cs
// Copyright (C) 2001 Mike Krueger
//
// 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

using System;
using System.IO;
using System.Collections;
using System.Diagnostics;
using System.Xml;
using System.Windows.Forms;
using SharpDevelop.Internal.Templates;

namespace SharpDevelop.Tool.Data {
	
	/// <summary>
	/// This class handles the code templates
	/// </summary>
	public class CodeTemplateLoader
	{
		static string TEMPLATEFILE        = "SharpDevelop-templates.xml";
		static string TEMPLATEFILEVERSION = "1";
		
		static ArrayList template         = new ArrayList();
		
		public static ArrayList Template {
			get {
				return template;
			}
			set {
				template = value;
				Debug.Assert(template != null, "SharpDevelop.Tool.Data.TemplateLoader : set ArrayList Template (value == null)");
			}
		}
		
		static bool LoadTemplatesFromStream(string filename)
		{
			XmlDocument doc = new XmlDocument();
			try {
				doc.Load(filename);
				
				template = new ArrayList();
				
				XmlNodeList nodes = doc.DocumentElement.ChildNodes;
				
				if (doc.DocumentElement.Attributes["VERSION"].InnerText != TEMPLATEFILEVERSION)
					return false;
				
				foreach (XmlElement el in nodes)
					template.Add(new CodeTemplate(el));
				
			} catch (Exception) {
				return false;
			}
			return true;
		}
		
		static void WriteTemplatesToStream(Stream s)
		{
			XmlDocument doc    = new XmlDocument();
			
			doc.LoadXml("<TEMPLATES VERSION = \"" + TEMPLATEFILEVERSION + "\" />");
			
			foreach (CodeTemplate temp in template)
				doc.DocumentElement.AppendChild(temp.ToXmlElement(doc));
			
			doc.Save(new StreamWriter(s));
		}
		
		/// <summary>
		/// This method loads the code templates from a XML based
		/// configuration file.
		/// </summary>
		public static void LoadTemplates()
		{
			if (!LoadTemplatesFromStream(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal) + "\\" + TEMPLATEFILE)) {
				Console.WriteLine("Templates: can't load user defaults, reading system defaults");
				if (!LoadTemplatesFromStream(Application.StartupPath + "\\options\\" + TEMPLATEFILE)) {
					MessageBox.Show("Can't load templates configuration file", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
				}
			}
		}
		
		/// <summary>
		/// This method saves the code templates to a XML based
		/// configuration file in the current user's own files directory
		/// </summary>
		public static void SaveTemplates()
		{
			WriteTemplatesToStream(File.Create(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal) + "\\" + TEMPLATEFILE));
		}
		
	}
}