Function append_extension 

pub fn append_extension(path: &Path, ext: &str) -> PathBuf

Appends an additional extension to the existing extension of a file path.

This function preserves the existing extension and appends the new extension to it, instead of replacing it. If the path does not have an existing extension, the new extension is simply added.

Arguments

• path - A reference to a PathBuf representing the file path.
• ext - The additional extension to append.

Returns

A new PathBuf with the appended extension.

Examples

use std::path::{Path, PathBuf};
use simd_r_drive::utils::append_extension;

let path = Path::new("example.txt");
let modified = append_extension(path, "bk");
assert_eq!(modified, PathBuf::from("example.txt.bk"));

let path_no_ext = Path::new("example");
let modified_no_ext = append_extension(path_no_ext, "bk");
assert_eq!(modified_no_ext, PathBuf::from("example.bk"));

let path_multi_ext = Path::new("archive.tar.gz");
let modified_multi_ext = append_extension(path_multi_ext, "bk");
assert_eq!(modified_multi_ext, PathBuf::from("archive.tar.gz.bk"));