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Get A Filename From A Rust Path Without The Extension

Use `file_stem()`` to get a filename from a path without its extensio

Code

use std::path::PathBuf;

fn main() {
  let path = PathBuf::from("some/path/to/alfa.html");
  let file_name = path.file_stem().unwrap().to_string_lossy();
  println!("{}", file_name);
}

Results

alfa

Notes

  • `file_stem()`` gets the filename up until the last dot. That means if the input is something like `alfa.tar.gz`` the output will be `alfa.tar`` instead of `alfa``

  • There's a `file_prefix()`` in nightly Rust that gets the name up until the first dot. (i.e. given `alfa.tar.gz`` it will return `alfa``)

  • `file_stem()`` returns an `OsString``. I'm converting it to a regular `String`` here with `to_string_lossy()``. It makes sure that invalid UTF characters are replaced with a placeholder instead of breaking the string

References