BatchRvt: improve error handling for the case where an Excel Revit Fi…

…le list is specified but an Excel installation is not detected.

BatchRvt/Scripts/batch_rvt_config.py

@@ -98,6 +98,9 @@ def ReadRevitFileList(self, output):
       if not File.Exists(self.RevitFileListFilePath):
         output()
         output("ERROR: No Revit file list specified or file not found.")
+      elif revit_file_list.HasExcelFileExtension(self.RevitFileListFilePath) and not revit_file_list.IsExcelInstalled():
+        output()
+        output("ERROR: Could not read from the Excel Revit File list. An Excel installation was not detected!")
       else:
         revitFileList = revit_file_list.GetRevitFileList(self.RevitFileListFilePath)
         if revitFileList is None:

BatchRvt/Scripts/revit_file_list.py

@@ -62,13 +62,8 @@ def HasExcelFileExtension(filePath):
   return any(path_util.HasFileExtension(filePath, extension) for extension in [".xlsx", ".xls"])
 
 def FromExcelFile(excelFilePath):
-  centralFilePaths = []
-  if IsExcelInstalled():
-    import excel_util
-    centralFilePaths = GetCentralFileListFromRows(excel_util.ReadRowsTextFromWorkbook(excelFilePath))
-  else:
-    raise Exception("ERROR: An Excel installation was not detected! Support for Excel files requires an Excel installation.")
-  return centralFilePaths 
+  import excel_util
+  return GetCentralFileListFromRows(excel_util.ReadRowsTextFromWorkbook(excelFilePath))
 
 def FromConsole():
   return FromLines(console_util.ReadLines())