[FileTools] Create method for finding empty directories

SabreTools.Helper/Dats/Partials/DatFile.DFD.cs

@@ -92,11 +92,7 @@ namespace SabreTools.Helper.Dats
 				// Now find all folders that are empty, if we are supposed to
 				if (!Romba && addBlanks)
 				{
-					List<string> empties = Directory
+					List<string> empties = FileTools.GetEmptyDirectories(basePath).ToList();
-						.EnumerateDirectories(basePath, "*", SearchOption.AllDirectories)
-						.Where(dir => Directory.EnumerateFileSystemEntries(dir, "*", SearchOption.AllDirectories).Count() == 0)
-						.ToList();
-
 					Parallel.ForEach(empties,
 						Globals.ParallelOptions,
 						dir =>
@@ -278,11 +274,7 @@ namespace SabreTools.Helper.Dats
 					if (addBlanks)
 					{
 						// Get the list of empty directories
-						List<string> empties = Directory
+						List<string> empties = FileTools.GetEmptyDirectories(tempSubDir).ToList();
-							.EnumerateDirectories(tempSubDir, "*", SearchOption.AllDirectories)
-							.Where(dir => Directory.EnumerateFileSystemEntries(dir, "*", SearchOption.AllDirectories).Count() == 0)
-							.ToList();
-
 						Parallel.ForEach(empties,
 							Globals.ParallelOptions,
 							dir =>

SabreTools.Helper/Tools/FileTools.cs

@@ -35,31 +35,6 @@ namespace SabreTools.Helper.Tools
 	{
 		#region File Information
 
-		/// <summary>
-		/// Retrieve a list of files from a directory recursively in proper order
-		/// </summary>
-		/// <param name="directory">Directory to parse</param>
-		/// <param name="infiles">List representing existing files</param>
-		/// <returns>List with all new files</returns>
-		public static List<string> RetrieveFiles(string directory, List<string> infiles)
-		{
-			// Take care of the files in the top directory
-			List<string> toadd = Directory.EnumerateFiles(directory, "*", SearchOption.TopDirectoryOnly).ToList();
-			toadd.Sort(new NaturalComparer());
-			infiles.AddRange(toadd);
-
-			// Then recurse through and add from the directories
-			List<string> dirs = Directory.EnumerateDirectories(directory, "*", SearchOption.TopDirectoryOnly).ToList();
-			dirs = Style.OrderByAlphaNumeric(dirs, s => s).ToList();
-			foreach (string dir in dirs)
-			{
-				infiles = RetrieveFiles(dir, infiles);
-			}
-
-			// Return the new list
-			return infiles;
-		}
-
 		/// <summary>
 		/// Get what type of DAT the input file is
 		/// </summary>
@@ -193,6 +168,30 @@ namespace SabreTools.Helper.Tools
 			}
 		}
 
+		/// <summary>
+		/// Get all empty folders within a root folder
+		/// </summary>
+		/// <param name="root">Root directory to parse</param>
+		/// <returns>IEumerable containing all directories that are empty, an empty enumerable if the root is empty, null otherwise</returns>
+		public static IEnumerable<string> GetEmptyDirectories(string root)
+		{
+			// Check if the root exists first
+			if (!Directory.Exists(root))
+			{
+				return null;
+			}
+
+			// If it does and it is empty, return a blank enumerable
+			if (Directory.EnumerateFileSystemEntries(root, "*", SearchOption.AllDirectories).Count() == 0)
+			{
+				return new List<string>();
+			}
+
+			// Otherwise, get the complete list
+			return Directory.EnumerateDirectories(root, "*", SearchOption.AllDirectories)
+				.Where(dir => Directory.EnumerateFileSystemEntries(dir, "*", SearchOption.AllDirectories).Count() == 0);
+		}
+
 		/// <summary>
 		/// Retrieve file information for a single file
 		/// </summary>
@@ -250,6 +249,31 @@ namespace SabreTools.Helper.Tools
 			return rom;
 		}
 
+		/// <summary>
+		/// Retrieve a list of files from a directory recursively in proper order
+		/// </summary>
+		/// <param name="directory">Directory to parse</param>
+		/// <param name="infiles">List representing existing files</param>
+		/// <returns>List with all new files</returns>
+		public static List<string> RetrieveFiles(string directory, List<string> infiles)
+		{
+			// Take care of the files in the top directory
+			List<string> toadd = Directory.EnumerateFiles(directory, "*", SearchOption.TopDirectoryOnly).ToList();
+			toadd.Sort(new NaturalComparer());
+			infiles.AddRange(toadd);
+
+			// Then recurse through and add from the directories
+			List<string> dirs = Directory.EnumerateDirectories(directory, "*", SearchOption.TopDirectoryOnly).ToList();
+			dirs = Style.OrderByAlphaNumeric(dirs, s => s).ToList();
+			foreach (string dir in dirs)
+			{
+				infiles = RetrieveFiles(dir, infiles);
+			}
+
+			// Return the new list
+			return infiles;
+		}
+
 		#endregion
 
 		#region File Manipulation