Is there a native function in MATLAB that can determine if a MATLAB file or P-file is a function or script?

I want to know if there is a native function in MATLAB which can determine if a MATLAB file or P-file is a function or script.

Answer 1

[MathWorks Support Team]

The ability to determine if a MATLAB file or P-file (Pcode) is a function or a script is not available in MATLAB 7.3 (R2006b).

As a workaround, you may use the following function to determine if a file is a function:

function result = isfunction(fname)

% Open the file passed as a string to the function

fid = fopen(fname,'rt');

% Make sure the file opened correctly

if (fid < 1)

    error(ferror(fid))

end

result = false;

% Count the number of lines

while ~feof(fid) && ~result

     str = fgetl(fid);

     trimmed_str = strtrim(str);

     if ~isempty(trimmed_str) && ~strcmp(trimmed_str(1), '%')

         try

             result = strcmp(trimmed_str(1:8), 'function');

         catch

             %first line of code is not a function

             break

         end

     end

end

% Close the file

fclose(fid);

There is no workaround to determine if a P-file is a function.