directory.cs

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	// the specified search criteria, returning FileSystemInfo's.
	internal static Object ScanDirectoryForInfos
				(String path, String searchPattern,
				 ScanType scanType, Type arrayType)
			{
				Regex regex;
				ArrayList list;
				InternalFileInfo[] entries;
				Errno error;
				int posn;
				String filename;
				FileType type;

				// Get all files in the directory.
				error = DirMethods.GetFilesInDirectory(path, out entries);
				if(error != Errno.Success)
				{
					HandleErrorsDir(error);
				}
				if(entries == null)
				{
					return new String [0];
				}

				// Convert the search pattern into a regular expression.
				if(searchPattern == null)
				{
					regex = null;
				}
				else
				{
					regex = new Regex(searchPattern, RegexSyntax.Wildcard);
				}

				// Scan the file list and collect up matching entries.
				list = new ArrayList (entries.Length);
				for(posn = 0; posn < entries.Length; ++posn)
				{
					filename = entries[posn].fileName;
					if(filename == "." || filename == "..")
					{
						continue;
					}
					type = entries[posn].fileType;
					switch(scanType)
					{
						case ScanType.Directories:
						{
							if(type != FileType.directory)
							{
								continue;
							}
						}
						break;

						case ScanType.Files:
						{
							if(type == FileType.directory)
							{
								continue;
							}
						}
						break;

						default: break;
					}
					if(regex != null && !regex.Match(filename))
					{
						continue;
					}
					if(type == FileType.directory)
					{
						list.Add(new DirectoryInfo
									(Path.Combine(path, filename)));
					}
					else
					{
						list.Add(new FileInfo(Path.Combine(path, filename)));
					}
				}

				// Dispose of the regular expression.
				if(regex != null)
				{
					regex.Dispose();
				}

				// Return the list of strings to the caller.
				return list.ToArray(arrayType);
			}

#endif // !ECMA_COMPAT

	// Get the sub-directories under a specific directory.
	public static String[] GetDirectories(String path)
			{
				ValidatePath(path);
				return ScanDirectory(path, null, ScanType.Directories);
			}
	public static String[] GetDirectories(String path, String searchPattern)
			{
				ValidatePath(path);
				if(searchPattern == null)
				{
					throw new ArgumentNullException("searchPattern");
				}
				return ScanDirectory(path, searchPattern,
									 ScanType.Directories);
			}

	// Get the root directory for a specific path.
	public static String GetDirectoryRoot(String path)
			{
				return Path.GetPathRoot(path);
			}

	// Get the files under a specific directory.
	public static String[] GetFiles(String path)
			{
				ValidatePath(path);
				return ScanDirectory(path, null, ScanType.Files);
			}
	public static String[] GetFiles(String path, String searchPattern)
			{
				ValidatePath(path);
				if(searchPattern == null)
				{
					throw new ArgumentNullException("searchPattern");
				}
				return ScanDirectory(path, searchPattern,
									 ScanType.Files);
			}

	// Get all filesystem entries under a specific directory.
	public static String[] GetFileSystemEntries(String path)
			{
				ValidatePath(path);
				return ScanDirectory(path, null, ScanType.DirectoriesAndFiles);
			}
	public static String[] GetFileSystemEntries
					(String path, String searchPattern)
			{
				ValidatePath(path);
				if(searchPattern == null)
				{
					throw new ArgumentNullException("searchPattern");
				}
				return ScanDirectory(path, searchPattern,
									 ScanType.DirectoriesAndFiles);
			}

	// Get the last access time of a directory.
	public static DateTime GetLastAccessTime(String path)
			{
				long time;
				ValidatePath(path);
				HandleErrorsDir(DirMethods.GetLastAccess(path, out time));
				return (new DateTime(time)).ToLocalTime();
			}

	// Get the last modification time of a directory.
	public static DateTime GetLastWriteTime(String path)
			{
				long time;
				ValidatePath(path);
				HandleErrorsDir(DirMethods.GetLastModification(path, out time));
				return (new DateTime(time)).ToLocalTime();
			}

	// Move a file or directory to a new location.
	public static void Move(String sourceDirName, String destDirName)
			{
				ValidatePath(sourceDirName);
				ValidatePath(destDirName);
				HandleErrorsFile(DirMethods.Rename(sourceDirName, destDirName));
			}

	// Set a directory's creation time.
	public static void SetCreationTime(String path, DateTime creationTime)
			{
				ValidatePath(path);
				long ticks = creationTime.ToUniversalTime().Ticks;
				HandleErrorsDir(FileMethods.SetCreationTime(path, ticks));
			}

	// Set the current directory.
	public static void SetCurrentDirectory(String path)
			{
				ValidatePath(path);
				HandleErrorsDir(DirMethods.ChangeDirectory(path));
			}

	// Set a directory's last access time.
	public static void SetLastAccessTime(String path, DateTime lastAccessTime)
			{
				ValidatePath(path);
				long ticks = lastAccessTime.ToUniversalTime().Ticks;
				HandleErrorsDir(FileMethods.SetLastAccessTime(path, ticks));
			}

	// Set a directory's last write time.
	public static void SetLastWriteTime(String path, DateTime lastWriteTime)
			{
				ValidatePath(path);
				long ticks = lastWriteTime.ToUniversalTime().Ticks;
				HandleErrorsDir(FileMethods.SetLastWriteTime(path, ticks));
			}

#if !ECMA_COMPAT

	// Create a directory, including parent directories.
	public static DirectoryInfo CreateDirectory(String path)
			{
				ValidatePath(path);
				Errno error = DirMethods.CreateDirectory(path);
				if(error != Errno.Success)
				{
					// The path may already exist.
					if(Exists(path))
					{
						return new DirectoryInfo(path);
					}

					// Attempt to create the parent directory.
					String parent = Path.GetDirectoryName(path);
					if(parent == null)
					{
						HandleErrorsDir(error);
					}
					CreateDirectory(parent);

					// Now try creating the child directory again.
					error = DirMethods.CreateDirectory(path);
					if(error != Errno.Success)
					{
						HandleErrorsDir(error);
					}
				}
				return new DirectoryInfo(path);
			}

	// Get the UTC creation time of a directory.
	public static DateTime GetCreationTimeUtc(String path)
			{
				long time;
				ValidatePath(path);
				HandleErrorsDir(DirMethods.GetCreationTime(path, out time));
				return new DateTime(time);
			}

	// Get the UTC last access time of a directory.
	public static DateTime GetLastAccessTimeUtc(String path)
			{
				long time;
				ValidatePath(path);
				HandleErrorsDir(DirMethods.GetLastAccess(path, out time));
				return new DateTime(time);
			}

	// Get the UTC last modification time of a directory.
	public static DateTime GetLastWriteTimeUtc(String path)
			{
				long time;
				ValidatePath(path);
				HandleErrorsDir(DirMethods.GetLastModification(path, out time));
				return new DateTime(time);
			}

	// Get the logical drive letters.
	public static String[] GetLogicalDrives()
			{
				return DirMethods.GetLogicalDrives();
			}

	// Get the parent of a specific directory.
	public static DirectoryInfo GetParent(String path)
			{
				int index, index2;
				if(path == null)
				{
					throw new ArgumentNullException("path");
				}
				path = Path.GetFullPath(path);
				index = path.LastIndexOf(Path.DirectorySeparatorChar);
				index2 = path.LastIndexOf(Path.AltDirectorySeparatorChar);
				if(index2 > index)
				{
					index = index2;
				}
				if(index <= 0)
				{
					return null;
				}
				return new DirectoryInfo(path.Substring(0, index));
			}

	// Set a directory's UTC creation time.
	public static void SetCreationTimeUtc(String path, DateTime creationTime)
			{
				ValidatePath(path);
				long ticks = creationTime.Ticks;
				HandleErrorsDir(FileMethods.SetCreationTime(path, ticks));
			}

	// Set a directory's UTC last access time.
	public static void SetLastAccessTimeUtc
				(String path, DateTime lastAccessTime)
			{
				ValidatePath(path);
				long ticks = lastAccessTime.Ticks;
				HandleErrorsDir(FileMethods.SetLastAccessTime(path, ticks));
			}

	// Set a directory's UTC last write time.
	public static void SetLastWriteTimeUtc(String path, DateTime lastWriteTime)
			{
				ValidatePath(path);
				long ticks = lastWriteTime.Ticks;
				HandleErrorsDir(FileMethods.SetLastWriteTime(path, ticks));
			}

#endif // !ECMA_COMPAT

}; // class Directory

}; // namespace System.IO