Crate poppable_path

This crate provides the Poppable trait for removing the last component of Path-like things. It is intended for use in situations where you don’t know whether you’ll have a Path or a PathBuf and don’t want to do an additional allocation.

use poppable_path::Poppable;

trait PathGenerator<'a> {
    /// Something path-like that may depend on the lifetime `'a`
    type Path: Poppable + AsRef<std::path::Path>;

    fn path(&'a self) -> Self::Path;

    fn dir(&'a self) -> Option<Self::Path> {
        let mut path = self.path();
        if path.as_ref().is_dir() {
            Some(path)
        } else if !path.pop() {
            None
        } else if path.as_ref().is_dir() {
            Some(path)
        } else {
            None
        }
    }
}

Traits

Poppable

Something poppable Path-like