path: root/mcs/class/corlib/System.IO/Directory.cs

// 
// System.IO.Directory.cs 
//
// Authors:
//   Jim Richardson  (develop@wtfo-guru.com)
//   Miguel de Icaza (miguel@ximian.com)
//   Dan Lewis       (dihlewis@yahoo.co.uk)
//
// Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
// Copyright (C) 2002 Ximian, Inc.
// 
// Created:        Monday, August 13, 2001 
//
//------------------------------------------------------------------------------

using System;
using System.Security.Permissions;
using System.Collections;

namespace System.IO
{
	public sealed class Directory : Object
	{
		private Directory () {}

		public static DirectoryInfo CreateDirectory (string path)
		{
			if (path == null)
				throw new ArgumentNullException ();
			if (path == "" || path.IndexOfAny (Path.InvalidPathChars) != -1)
				throw new ArgumentException ();

			if (!MonoIO.CreateDirectory (path))
				throw MonoIO.GetException ();

			return new DirectoryInfo (path);
		}

		public static void Delete (string path)
		{
			if (path == null)
				throw new ArgumentNullException ();
			if (path == "" || path.IndexOfAny (Path.InvalidPathChars) != -1)
				throw new ArgumentException ();

			if (!MonoIO.RemoveDirectory (path))
				throw MonoIO.GetException ();
		}

		static void RecursiveDelete (string path)
		{
			foreach (string dir in GetDirectories (path))
				RecursiveDelete (dir);

			foreach (string file in GetFiles (path))
				File.Delete (file);

			Directory.Delete (path);
		}
		
		public static void Delete (string path, bool recurse)
		{
			if (path == null)
				throw new ArgumentNullException ();
			if (path.IndexOfAny (Path.InvalidPathChars) != -1)
				throw new ArgumentException ("Path contains invalid characters");

			if (recurse == false){
				Delete (path);
				return;
			}

			RecursiveDelete (path);
		}
		
		public static bool Exists (string path)
		{
			return MonoIO.ExistsDirectory (path);
		}

		public static DateTime GetLastAccessTime (string path)
		{
			return File.GetLastAccessTime (path);
		}
		
		public static DateTime GetLastWriteTime (string path)
		{
			return File.GetLastWriteTime (path);
		}
		
		public static DateTime GetCreationTime (string path)
		{
			return File.GetLastWriteTime (path);
		}
		
		public static string GetCurrentDirectory ()
		{
			/*
			// Implementation complete 08/25/2001 14:24 except for
			// LAMESPEC: documentation specifies invalid exceptions (i think)
			//           also shouldn't need Write to getcurrrent should we?
			string str = Environment.CurrentDirectory;
			CheckPermission.Demand (FileIOPermissionAccess.Read & FileIOPermissionAccess.Write, str);
			*/
			return Environment.CurrentDirectory;
		}
		
		public static string [] GetDirectories (string path)
		{
			return GetDirectories (path, "*");
		}
		
		public static string [] GetDirectories (string path, string pattern)
		{
			return GetFileSystemEntries (path, pattern, FileAttributes.Directory, FileAttributes.Directory);
		}
		
		public static string GetDirectoryRoot (string path)
		{
			return "" + Path.DirectorySeparatorChar;
		}
		
		public static string [] GetFiles (string path)
		{
			return GetFiles (path, "*");
		}
		
		public static string [] GetFiles (string path, string pattern)
		{
			return GetFileSystemEntries (path, pattern, FileAttributes.Directory, 0);
		}

		public static string [] GetFileSystemEntries (string path)
		{	
			return GetFileSystemEntries (path, "*");
		}

		public static string [] GetFileSystemEntries (string path, string pattern)
		{
			return GetFileSystemEntries (path, pattern, 0, 0);
		}
		
		public static string[] GetLogicalDrives ()
		{	
			return new string [] { "A:\\", "C:\\" };
		}

		public static DirectoryInfo GetParent (string path)
		{
			return new DirectoryInfo (Path.GetDirectoryName (path));
		}

		public static void Move (string src, string dest)
		{
			File.Move (src, dest);
		}

		public static void SetCreationTime (string path, DateTime creation_time)
		{
			File.SetCreationTime (path, creation_time);
		}
		
		public static void SetCurrentDirectory (string path)
		{
			/*
			// Implementation complete 08/25/2001 14:24 except for
			// LAMESPEC: documentation specifies invalid exceptions IOException (i think)
			CheckArgument.Path (path, true);
			CheckPermission.Demand (FileIOPermissionAccess.Read & FileIOPermissionAccess.Write, path);	
			*/
			if (!Exists (path))
			{
				throw new DirectoryNotFoundException ("Directory \"" + path + "\" not found.");
			}
			Environment.CurrentDirectory = path;
		}

		public static void SetLastAccessTime (string path, DateTime last_access_time)
		{
			File.SetLastAccessTime (path, last_access_time);
		}
		
		public static void SetLastWriteTime (string path, DateTime last_write_time)
		{
			File.SetLastWriteTime (path, last_write_time);
		}
		
		// private

		private static string [] GetFileSystemEntries (string path, string pattern, FileAttributes mask, FileAttributes attrs)
		{
			SearchPattern search;
			MonoIOStat stat;
			IntPtr find;

			if (path.IndexOfAny (Path.InvalidPathChars) != -1)
				throw new ArgumentException ("Path contains invalid characters.");

			if (!Directory.Exists (path))
				throw new DirectoryNotFoundException ("Directory '" + path + "' not found.");

			search = new SearchPattern (pattern);

			find = MonoIO.FindFirstFile (Path.Combine (path , "*"), out stat);
			if (find == MonoIO.InvalidHandle) {
				switch (MonoIO.GetLastError ()) {
				case MonoIOError.ERROR_FILE_NOT_FOUND:
				case MonoIOError.ERROR_PATH_NOT_FOUND:
					string message = String.Format ("Could not find a part of the path \"{0}\"", path);
					throw new DirectoryNotFoundException (message);
				case MonoIOError.ERROR_NO_MORE_FILES:
					return new string [0];

				default:
					throw MonoIO.GetException (path);
				}
			}
			
			ArrayList entries = new ArrayList ();

			while (true) {
				// Ignore entries of "." and ".." -
				// the documentation doesn't mention
				// it (surprise!) but empirical
				// testing indicates .net never
				// returns "." or ".." in a
				// GetDirectories() list.
				if ((stat.Attributes & mask) == attrs &&
				    search.IsMatch (stat.Name) &&
				    stat.Name != "." &&
				    stat.Name != "..")
					entries.Add (Path.Combine (path, stat.Name));

				if (!MonoIO.FindNextFile (find, out stat))
					break;
			}
			MonoIO.FindClose (find);

			return (string []) entries.ToArray (typeof (string));
		}
	}
}