cli_assert/
utils.rs

1use std::path::{Component, Path, PathBuf};
2
3pub trait PathExt {
4  fn rem(&self, p: impl AsRef<Path>) -> Option<PathBuf>;
5}
6
7impl PathExt for Path {
8  fn rem(&self, p: impl AsRef<Path>) -> Option<PathBuf> {
9    let left: Vec<Component> = self.components().collect();
10    let right: Vec<Component> = p.as_ref().components().collect();
11    let max_length = left.len().min(right.len());
12    for index in (1..=max_length).rev() {
13      if left[left.len() - index..] == right[..index] {
14        let mut path_buf = PathBuf::new();
15        for component in &right[index..] {
16          path_buf.push(component);
17        }
18        return Some(path_buf);
19      }
20    }
21    None
22  }
23}
24
25/// Pauses thread execution for specified number of milliseconds.
26pub fn sleep(millis: u64) {
27  if millis > 0 {
28    std::thread::sleep(std::time::Duration::from_millis(millis));
29  }
30}
31
32#[cfg(test)]
33mod tests {
34  use super::*;
35
36  #[test]
37  fn _0001() {
38    let p = Path::new("/a/b/c/d");
39    let s = Path::new("e/f");
40    assert_eq!(None, p.rem(s));
41  }
42
43  #[test]
44  fn _0002() {
45    let p = Path::new("/a/b/c/d");
46    let s = Path::new("d/e/f");
47    assert_eq!("e/f", p.rem(s).unwrap().to_string_lossy());
48  }
49
50  #[test]
51  fn _0003() {
52    let p = Path::new("a/b/c/d/e");
53    let s = Path::new("d/e/f");
54    assert_eq!("f", p.rem(s).unwrap().to_string_lossy());
55  }
56
57  #[test]
58  fn _0004() {
59    let p = Path::new("a/b/c");
60    let s = Path::new("e/f");
61    assert_eq!(None, p.rem(s));
62  }
63
64  #[test]
65  fn _0005() {
66    let p = Path::new("a/b/c");
67    let s = Path::new("a/b/c");
68    assert_eq!("", p.rem(s).unwrap().to_string_lossy());
69  }
70
71  #[test]
72  fn _0006() {
73    let p = Path::new("a/b/c");
74    let s = Path::new("b/c/d");
75    assert_eq!("d", p.rem(s).unwrap().to_string_lossy());
76  }
77}
cli_assert/utils.rs

cli_assert/
utils.rs
