[Octave-bug-tracker] [bug #47359] fileattrib wildcard/globbing characters handling

[Lutz Mager]

URL:
  <http://savannah.gnu.org/bugs/?47359>

                 Summary: fileattrib wildcard/globbing characters handling
                 Project: GNU Octave
            Submitted by: rocketsound
            Submitted on: Mo 07 Mär 2016 17:57:48 GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: rocketsound
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.1-rc1
        Operating System: Microsoft Windows

    _______________________________________________________

Details:

The core function fileattrib handles the wildcard character * differently then
Matlab does, with respect to finding subdirectories and -files. I noticed this
while search for an easy way for finding all subdirectories that lie in a
given root directory.

Let's say we have to the following directory and file structure:

RootDir
|__Dir1
   |__Subdir1
      |__MyText.txt
   |__Subdir2
|__Dir2

The following script will produce different outputs in Octave or Matlab.


[status, result, msgid] = fileattrib('C:\RootDir\*');
for i = 1:length(result)
  if (result(i).directory)
    fprintf('%s\n', result(i).Name);
  end
end


Octave's output:

C:\RootDir\Dir1
C:\RootDir\Dir2


Matlab's output:

C:\RootDir\Dir1\Subdir1
C:\RootDir\Dir1\Subdir2
C:\RootDir\Dir1
C:\RootDir\Dir2


A slightly altered version of the script (notice the second wildcard below)
will find the directories one layer below in Octave but will trigger an error
in Matlab.


[status, result, msgid] = fileattrib('C:\RootDir\*\*');
for i = 1:length(result)
  if (result(i).directory)
    fprintf('%s\n', result(i).Name);
  end
end


Again, Octave's output:

C:\RootDir\Dir1\Subdir1
C:\RootDir\Dir1\Subdir2


And the output of Matlab:

??? Improper index matrix reference.

Error in ==> mytest at 4
  if (result(i).directory)


You get the point. Octave's fileattrib follows an other logic then Matlab's
version does.

Tested this on Windows XP and 7.




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?47359>

_______________________________________________
  Nachricht gesendet von/durch Savannah
  http://savannah.gnu.org/