add code to repair missing FbxPrefab

Author: vkovec

Assets/FbxExporters/Editor/FbxExporterRepairMissingScripts.cs

@@ -0,0 +1,108 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEditor;
+using System.IO;
+
+namespace FbxExporters.Editor
+{
+	public class RepairMissingScripts
+	{
+		private const string m_forumPackageGUID = "2d81c55c4d9d85146b1d2de96e084b63";
+		private const string m_currentPackageGUID = "628ffbda3fdf4df4588770785d91a698";
+
+		private const string m_fbxPrefabDLLFileId = "69888640";
+
+		private const string m_idFormat = "{{fileID: {0}, guid: {1}, type:";
+
+
+		private static string m_forumPackageSearchID;
+
+		private static string ForumPackageSearchID {
+			get {
+				if (string.IsNullOrEmpty (m_forumPackageSearchID)) {
+					m_forumPackageSearchID = string.Format (m_idFormat, m_fbxPrefabDLLFileId, m_forumPackageGUID);
+				}
+				return m_forumPackageSearchID;
+			}
+		}
+
+		private static string m_currentPackageSearchID;
+
+		private static string CurrentPackageSearchID {
+			get {
+				if (string.IsNullOrEmpty (m_currentPackageSearchID)) {
+					m_currentPackageSearchID = string.Format (m_idFormat, m_fbxPrefabDLLFileId, m_currentPackageGUID);
+				}
+				return m_currentPackageSearchID;
+			}
+		}
+
+		[MenuItem ("File/Repair Missing Scripts", false)]
+		public static void Menu ()
+		{
+			ReplaceGUIDInTextAssets ();
+		}
+
+		private static bool ReplaceGUIDInTextAssets ()
+		{
+			// search project for assets containing old GUID
+
+            // ignore if forced binary
+            if (UnityEditor.EditorSettings.serializationMode == SerializationMode.ForceBinary) {
+                return false;
+            }
+
+			// check all scenes and prefabs
+			string[] searchFilePatterns = new string[]{ "*.prefab", "*.unity" };
+
+			bool replacedGUID = false;
+			foreach (string searchPattern in searchFilePatterns) {
+				foreach (string file in Directory.GetFiles(Application.dataPath, searchPattern, SearchOption.AllDirectories)) {
+					replacedGUID |= ReplaceGUIDInFile (file);
+				}
+			}
+			if (replacedGUID) {
+				AssetDatabase.Refresh ();
+			}
+			return replacedGUID;
+		}
+
+		private static bool ReplaceGUIDInFile (string path)
+		{
+			// try to read file, assume it's a text file for now
+			int modified = 0;
+
+			try {
+				var sr = new StreamReader (path);
+				var sw = new StreamWriter (path + ".remap", false);
+
+				while (sr.Peek () > -1) {
+					var line = sr.ReadLine ();
+
+					if (line.Contains (ForumPackageSearchID)) {
+						modified++;
+						line = line.Replace (ForumPackageSearchID, CurrentPackageSearchID);
+					}
+
+					sw.WriteLine (line);
+				}
+
+				sr.Close ();
+				sw.Close ();
+
+				if (modified > 0) {
+					File.Delete (path);
+					File.Move (path + ".remap", path);
+					return true;
+				} else {
+					File.Delete (path + ".remap");
+				}
+			} catch (IOException e) {
+				Debug.LogError (string.Format ("Failed to replace GUID in file {0} (error={1})", path, e));
+			}
+
+			return false;
+		}
+	}
+}