Extracting the basename from a filepath argument

Question

I have a function which takes a filepath as an argument. How can I extract the basename (file.c in the example below) from the argument?

\mycommand{path/to/file.c}

...

\def\@mycommand#1{
  ...
  \section{\basename{#1})}
  ...
}

Answer 1

LaTeX includes a filepath parser (the exact syntax it parses depends on the system)

\makeatletter

\filename@parse{path/to/file.c}

\typeout{area: \filename@area}

\typeout{name: \filename@base}

\typeout{ext: \filename@ext}

\makeatother

Produces this on the terminal:

area: path/to/
name: file
ext: c