I want to check if a path is a subdirectory of another path:
use std::path::Path;
let path = Path::new("/foo/bar/");
let child = Path::new("/foo/bar/baz");
assert_eq!(is_subdirectory(path, child), true);
How to do this?
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tamuhey
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[starts_with](https://doc.rust-lang.org/std/path/struct.Path.html#method.starts_with)??? – Alexey S. Larionov Jul 16 '20 at 17:25
1 Answers
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Path's method starts_with works
use std::path::Path;
let path = Path::new("/foo/bar/");
let child = Path::new("/foo/bar/baz");
assert_eq!(child.starts_with(path), true);
assert_eq!(path.starts_with(child), false);
Alexey S. Larionov
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2Note: this does not work with `PathBuf::from("./a/b").starts_with(&PathBuf::from("./c/../a"))` . You have to `canonicalize` first, which [introduce its own problems](https://stackoverflow.com/questions/30511331/getting-the-absolute-path-from-a-pathbuf). – Jason Lee Jan 14 '22 at 16:28
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@JasonLee that's kind of expected, `Path` is more like a string extension, it doesn't do computations around relative tokens `.`/`..` – Alexey S. Larionov Jan 14 '22 at 19:23