[SabreTools, Flags, DatFile, README] Add update description

SabreTools.Library/DatFiles/DatFile.cs

@@ -1786,9 +1786,6 @@ namespace SabreTools.Library.DatFiles
 
 			watch.Stop();
 
-			// For comparison's sake, we want to use CRC as the base ordering
-			BucketBy(SortedBy.CRC, DedupeType.Full);
-
 			// Now we want to try to replace each item in each input DAT from the base
 			foreach (string path in inputFileNames)
 			{
@@ -1798,7 +1795,12 @@ namespace SabreTools.Library.DatFiles
 				DatFile intDat = new DatFile();
 				intDat.Parse(path, 1, 1, keep: true, clean: clean, remUnicode: remUnicode, descAsName: descAsName);
 
+				// If we are matching based on hashes of any sort
+				if ((replaceMode & ReplaceMode.Names) != 0
+					|| (replaceMode & ReplaceMode.Hashes) != 0)
+				{
 					// For comparison's sake, we want to use CRC as the base ordering
+					BucketBy(SortedBy.CRC, DedupeType.Full);
 					intDat.BucketBy(SortedBy.CRC, DedupeType.None);
 
 					// Then we do a hashwise comparison against the base DAT
@@ -1896,6 +1898,37 @@ namespace SabreTools.Library.DatFiles
 						intDat.Remove(key);
 						intDat.AddRange(key, newDatItems);
 					});
+				}
+
+				// If we are matching based on names of any sort
+				if ((replaceMode & ReplaceMode.Descriptions) != 0)
+				{
+					// For comparison's sake, we want to use Machine Name as the base ordering
+					BucketBy(SortedBy.Game, DedupeType.Full);
+					intDat.BucketBy(SortedBy.Game, DedupeType.None);
+
+					// Then we do a namewise comparison against the base DAT
+					List<string> keys = intDat.Keys;
+					Parallel.ForEach(keys, Globals.ParallelOptions, key =>
+					{
+						List<DatItem> datItems = intDat[key];
+						List<DatItem> newDatItems = new List<DatItem>();
+						foreach (DatItem datItem in datItems)
+						{
+							DatItem newDatItem = (DatItem)datItem.Clone();
+							if (Contains(key) && this[key].Count() > 0)
+							{
+								newDatItem.MachineDescription = this[key][0].MachineDescription;
+							}
+
+							newDatItems.Add(newDatItem);
+						}
+
+						// Now add the new list to the key
+						intDat.Remove(key);
+						intDat.AddRange(key, newDatItems);
+					});
+				}
 
 				// Determine the output path for the DAT
 				string interOutDir = Utilities.GetOutputPath(outDir, path, inplace);

SabreTools.Library/Data/Flags.cs

@@ -251,6 +251,7 @@ namespace SabreTools.Library.Data
 		None = 0x0,
 		Names = 0x1,
 		Hashes = Names << 1,
+		Descriptions = Hashes << 1,
 	}
 
 	/// <summary>

SabreTools.Library/README.1ST

@@ -1156,8 +1156,12 @@ Options:
 				Add a DAT or folder of DATs to the base set to be used in
 				item name replacement
 
-			-un, --update-names		Update names from base DATs
+			-un, --update-names		Update item names from base DATs
-				This flag enables updating of names from base DATs.
+				This flag enables updating of item names from base DATs.
+			
+			-udd, --update-desc		Update machine descriptions from base DATs
+				This flag enables updating of machine descriptions from base
+				DATs
 
 			-uh, --update-hashes	Update hashes from base DATs
 				This flag enables updating of hashes from base DATs.

SabreTools/SabreTools.Help.cs

@@ -1272,7 +1272,12 @@ namespace SabreTools
 					null));
 				update["base-replace"].AddFeature("update-names", new Feature(
 					new List<string>() { "-un", "--update-names" },
-					"Update names from base DATs",
+					"Update item names from base DATs",
+					FeatureType.Flag,
+					null));
+				update["base-replace"].AddFeature("update-desc", new Feature(
+					new List<string>() { "-udd", "--update-desc" },
+					"Update machine descriptions from base DATs",
 					FeatureType.Flag,
 					null));
 				update["base-replace"].AddFeature("update-hashes", new Feature(

SabreTools/SabreTools.cs

@@ -488,6 +488,9 @@ namespace SabreTools
 					case "update-dat":
 						updateDat = true;
 						break;
+					case "update-desc":
+						replaceMode |= ReplaceMode.Descriptions;
+						break;
 					case "update-hashes":
 						replaceMode |= ReplaceMode.Hashes;
 						break;