Delphi: Renaming an Invalid Folder

Question

I have an application that creates invalid Directories... e.g. c:\Program Files\somedirectory. - the period is a part of the directory name.

Now, I have tried everything that I know about renaming a file in delphi.

• RenameFile(file1,file2)
• MoveFile(File1,File2)
• etc...

I have tried getting the windows short path ExtractShortPathName but this just returns an empty string. (to call in commandPrompt: "RENAME ShortOldName NewName")

Now I know I can manually do it in cmd but I am not about to spend the time to go through all my files and do it ;)

Here is a bit of my code:

xshortname := ExtractFileName(ExtractShortPathName(ns + oldName));
  xNewName := newName;

  cmdTxt :=  PWideChar('/C cd ' + ns);
  cmdTxt2 := PWideChar(cmdTxt + '&&' + ' RENAME ' + xshortname + ' ' + #34 + xNewName + #34);
  ShellExecute(0, nil, 'cmd.exe', cmdTxt2, nil, SW_SHOWNORMAL);

I know shellExecute is not the best method to be using here. I am just trying to get the stinker to work. I will worry about optimizing and proper Delphi coding later.

So my question is: Does anyone know of a function that will allow me to rename an invalid directory?

Answer 1

You can use the standard Windows API function MoveFile() if you pass the name of the folder in a special way:

MoveFile('\\?\D:\invalid_dir.', '\\?\D:\invalid_dir.fixed');

instead of

MoveFile('D:\invalid_dir.', 'D:\invalid_dir.fixed');

More about it can be found on MSDN under the "Naming Files, Paths, and Namespaces" topic. Note that it specifically advises against putting trailing dots in file names.