Function filenames_in_dir

dev-scripts/src/sync/mod.rs:37–54

A small helper function that returns a list of unique file names in a directory.

(path: &Path)

/// A small helper function that returns a list of unique file names in a directory.
pub fn filenames_in_dir(path: &Path) -> Result<HashSet<String>, Error> {
    let entries = read_dir(path).map_err(|source| Error::IoPath {
        path: path.to_path_buf(),
        context: "retrieving the entries of the directory".to_string(),
        source,
    })?;
    let mut files: HashSet<String> = HashSet::new();
    for entry in entries {
        let entry = entry.map_err(|source| Error::IoPath {
            path: path.to_path_buf(),
            context: "retrieving an entry in the directory".to_string(),
            source,
        })?;
        files.insert(entry.file_name().to_string_lossy().to_string());
    }

    Ok(files)
}