tools/tf/CommandRegistry.cs

   1 //
   2 // CommandRegistry.cs
   3 //
   4 // Authors:
   5 //      Joel Reed (joelwreed@gmail.com)
   6 //
   7
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Collections;
  31 using System.Collections.Generic;
  32 using System.IO;
  33 using System.Reflection;
  34 using System.Text;
  35
  36 public class CommandRegistry
  37 {
  38         static SortedList<string, System.Type> commands = new SortedList<string, System.Type>();
  39         static SortedList<string, CommandAttribute> commandAttributes = new SortedList<string, CommandAttribute>();
  40
  41         static CommandRegistry()
  42         {
  43                 Assembly assembly = Assembly.GetAssembly(typeof(CommandRegistry));
  44                 Type commandType = typeof(Command);
  45
  46                 System.Type[] types = assembly.GetTypes();
  47                 foreach (Type t in types)
  48                         {
  49                                 if (t.BaseType != commandType) continue;
  50                                 CommandAttribute[] attributes = t.GetCustomAttributes(typeof(CommandAttribute), false) as CommandAttribute[];
  51                                 foreach (CommandAttribute attribute in attributes)
  52                                         {
  53                                                 commands.Add(attribute.Name, t);
  54                                                 if (!String.IsNullOrEmpty(attribute.Alias))
  55                                                         commands.Add(attribute.Alias, t);
  56
  57                                                 commandAttributes.Add(attribute.Name, attribute);
  58                                         }
  59                         }
  60         }
  61
  62         static public System.Type GetCommandType(string name)
  63         {
  64                 System.Type t = commands[name];
  65                 return t;
  66         }
  67
  68         static public void ShowHelp()
  69         {
  70                 foreach (CommandAttribute attribute in commandAttributes.Values)
  71                         {
  72                                 Console.Write("  " + attribute.Name);
  73                                 if (!String.IsNullOrEmpty(attribute.Alias)) Console.Write(" (alias {0})", attribute.Alias);
  74                                 Console.WriteLine();
  75
  76                                 string description = attribute.Description;
  77                                 int x = 0;
  78
  79                                 while (x < description.Length)
  80                                         {
  81                                                 int y = Math.Min(x + 60, description.Length);
  82                                                 int z = description.IndexOf(' ', y) + 1;
  83                                                 if (z == 0) z = description.Length;
  84
  85                                                 Console.WriteLine("    " + description.Substring(x, z - x));
  86                                                 x = z;
  87                                         }
  88
  89                                 Console.WriteLine();
  90                         }
  91         }
  92 }
  93