Commands as separate classes

Each command is now in its own class in the 'Commands' namespace, and
loaded through reflection.

MinecraftClient/Command.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace MinecraftClient
+{
+    /// <summary>
+    /// Represents an internal MCC command: Command name, source code and usage message
+    /// To add a new command, inherit from this class while adding the command class to the folder "Commands".
+    /// If inheriting from the 'Command' class and placed in the 'Commands' namespace, the command will be
+    /// automatically loaded and available in main chat prompt, scripts, remote control and command help.
+    /// </summary>
+
+    public abstract class Command
+    {
+        /// <summary>
+        /// The command name
+        /// </summary>
+
+        public abstract string CMDName { get; }
+
+        /// <summary>
+        /// Usage message, eg: 'name [args]: do something'
+        /// </summary>
+
+        public abstract string CMDDesc { get; }
+
+        /// <summary>
+        /// Perform the command
+        /// </summary>
+        /// <param name="command">The full command, eg: 'mycommand arg1 arg2'</param>
+        /// <returns>A confirmation/error message, or "" if no message</returns>
+
+        public abstract string Run(McTcpClient handler, string command);
+
+        /// <summary>
+        /// Return a list of aliases for this command.
+        /// Override this method if you wish to put aliases to the command
+        /// </summary>
+
+        public virtual IEnumerable<string> getCMDAliases() { return new string[0]; }
+
+        /// <summary>
+        /// Check if at least one argument has been passed to the command
+        /// </summary>
+
+        public static bool hasArg(string command)
+        {
+            int first_space = command.IndexOf(' ');
+            return (first_space > 0 && first_space < command.Length - 1);
+        }
+
+        /// <summary>
+        /// Extract the argument string from the command
+        /// </summary>
+        /// <returns>Argument or "" if no argument</returns>
+
+        public static string getArg(string command)
+        {
+            if (hasArg(command))
+            {
+                return command.Substring(command.IndexOf(' ') + 1);
+            }
+            else return "";
+        }
+
+        /// <summary>
+        /// Extract the arguments as a string array from the command
+        /// </summary>
+        /// <returns>Argument array or empty array if no arguments</returns>
+
+        public static string[] getArgs(string command)
+        {
+            return getArg(command).Split(' ');
+        }
+    }
+}