Function libpijul::path::file_name

pub fn file_name(path: &str) -> Option<&str>

Returns the file name of the path. if it exists. This function tries to replicate the behaviour of std::path::Path::file_name, but with &str instead of Path.

Like the original, returns None if the path terminates in ...

use libpijul::path::file_name;
assert_eq!(file_name("/usr/bin/"), Some("bin"));
assert_eq!(file_name("tmp/foo.txt"), Some("foo.txt"));
assert_eq!(file_name("foo.txt/."), Some("foo.txt"));
assert_eq!(file_name("foo.txt/.//"), Some("foo.txt"));
assert_eq!(file_name("foo.txt/.."), None);
assert_eq!(file_name("/"), None);