Find git repositories or search them upwards from a starting point, or determine if a directory looks like a git repository.
Note that detection methods are educated guesses using the presence of files, without looking too much into the details.
# fn main() -> Result<(), Box<dyn std::error::Error>> {
# let dir = tempfile::tempdir()?;
# let git_dir = dir.path().join(".git");
# std::fs::create_dir_all(git_dir.join("objects"))?;
# std::fs::create_dir_all(git_dir.join("refs").join("heads"))?;
# std::fs::write(git_dir.join("HEAD"), b"ref: refs/heads/main\n")?;
# std::fs::write(
# git_dir.join("refs").join("heads").join("main"),
# b"1111111111111111111111111111111111111111\n",
# )?;
# let nested = dir.path().join("src").join("module");
# std::fs::create_dir_all(&nested)?;
let (path, _trust) = gix_discover::upwards(&nested)?;
let (repository_dir, worktree_dir) = path.into_repository_and_work_tree_directories();
assert_eq!(repository_dir, git_dir);
assert_eq!(worktree_dir, Some(dir.path().to_path_buf()));
assert!(gix_discover::is_git(&repository_dir).is_ok());
# Ok(()) }