Cosmos/source/FrodeTest/Application/cd.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using FrodeTest.Shell;
using System.IO;

namespace FrodeTest.Application
{
    class cd : IConsoleApplication
    {
        #region IConsoleApplication Members

        public int Execute(string[] args)
        {
            Cosmos.Kernel.DebugUtil.SendMessage("cd.cs", "Executing cd command");
            if (args == null)
                return 0;

            if (String.IsNullOrEmpty(args[0]))
                return 0;

            if (args[0] == "..")
            {
                //Go up one directory

                //TODO: Use DirectoryInfo.GetParent
                string xCurDir = EnvironmentVariables.GetCurrent().CurrentDirectory;
                xCurDir = xCurDir.TrimEnd(Path.DirectorySeparatorChar);
                EnvironmentVariables.GetCurrent().CurrentDirectory = xCurDir.Substring(0, xCurDir.LastIndexOf(Path.DirectorySeparatorChar));

                return 0;
            }

            string xNewPath = EnvironmentVariables.GetCurrent().CurrentDirectory + args[0] + Path.DirectorySeparatorChar;
            Cosmos.Kernel.DebugUtil.SendMessage("cd.cs", "Checking path " + xNewPath);
            if (Directory.Exists(xNewPath))
            {
                EnvironmentVariables.GetCurrent().CurrentDirectory = xNewPath;
            }
            else if (Directory.Exists(args[0] + Path.DirectorySeparatorChar))
            {
                EnvironmentVariables.GetCurrent().CurrentDirectory += args[0] + Path.DirectorySeparatorChar;
            }
            else
            {
                Console.WriteLine("Unknown path.");
                return -1;
            }

            return 0;
        }

        public string CommandName
        {
            get { return "cd"; }
        }

        public string Description
        {
            get { return "Change the current directory"; }
        }

        #endregion
    }
}