1use std::path::PathBuf;
2
3use bstr::ByteSlice;
4
5pub mod gitdir {
7 use bstr::BString;
8
9 #[derive(Debug, thiserror::Error)]
11 #[allow(missing_docs)]
12 pub enum Error {
13 #[error("Format should be 'gitdir: <path>', but got: {:?}", .input)]
14 InvalidFormat { input: BString },
15 #[error("Couldn't decode {:?} as UTF8", .input)]
16 IllformedUtf8 { input: BString },
17 }
18}
19
20pub fn gitdir(input: &[u8]) -> Result<PathBuf, gitdir::Error> {
22 let path = input
23 .strip_prefix(b"gitdir: ")
24 .ok_or_else(|| gitdir::Error::InvalidFormat { input: input.into() })?
25 .as_bstr();
26 let path = path.trim_end().as_bstr();
27 if path.is_empty() {
28 return Err(gitdir::Error::InvalidFormat { input: input.into() });
29 }
30 Ok(gix_path::try_from_bstr(path)
31 .map_err(|_| gitdir::Error::IllformedUtf8 { input: input.into() })?
32 .into_owned())
33}