[DatFile] Re-add single-file DAT creation for DFD

SabreTools.Helper/Dats/DatFile.cs

@@ -5188,7 +5188,9 @@ namespace SabreTools.Helper.Dats
 				Description = Name + (bare ? "" : " (" + Date + ")");
 			}
 
-			// Process the input folder
+			// Process the input
+			if (Directory.Exists(basePath))
+			{
 				logger.Verbose("Folder found: " + basePath);
 
 				// Process the files in all subfolders
@@ -5255,6 +5257,12 @@ namespace SabreTools.Helper.Dats
 							}
 						});
 				}
+			}
+			else if (File.Exists(basePath))
+			{
+				DFDProcessPossibleArchive(basePath, basePath, noMD5, noSHA1, bare, archivesAsFiles, enableGzip, addBlanks, addDate,
+					tempDir, copyFiles, headerToCheckAgainst, maxDegreeOfParallelism, logger);
+			}
 
 			// Now that we're done, delete the temp folder (if it's not the default)
 			logger.User("Cleaning temp folder");
@@ -5545,8 +5553,19 @@ namespace SabreTools.Helper.Dats
 
 				// Update rom information
 				datItem.Name = romname;
+				if (datItem.Machine == null)
+				{
+					datItem.Machine = new Machine
+					{
+						Name = gamename,
+						Description = gamename,
+					};
+				}
+				else
+				{
 					datItem.Machine.Name = gamename;
 					datItem.Machine.Description = gamename;
+				}
 
 				// Add the file information to the DAT
 				lock (Files)

SabreTools/Partials/SabreTools_Inits.cs

@@ -158,7 +158,7 @@ namespace SabreTools
 			// For each input directory, create a DAT
 			foreach (string path in inputs)
 			{
-				if (Directory.Exists(path))
+				if (Directory.Exists(path) || File.Exists(path))
 				{
 					// Clone the base Dat for information
 					DatFile datdata = (DatFile)basedat.Clone();