42 lines
1.2 KiB
Rust
42 lines
1.2 KiB
Rust
use std::path::{Path, PathBuf};
|
|
|
|
use ignore::WalkBuilder;
|
|
|
|
/// Caps nesting so pathological trees can't stall the scan.
|
|
const SCAN_MAX_DEPTH: usize = 12;
|
|
|
|
/// Walk `root` recursively and collect the paths of git repositories below it.
|
|
/// `.gitignore` and `.ignore` files are honoured.
|
|
pub fn find_git_repos(root: &Path) -> Vec<PathBuf> {
|
|
if !root.is_dir() {
|
|
return Vec::new();
|
|
}
|
|
|
|
let walker = WalkBuilder::new(root)
|
|
.max_depth(Some(SCAN_MAX_DEPTH))
|
|
// Honour `.gitignore` even when the scan root is not itself a repository.
|
|
.require_git(false)
|
|
.build();
|
|
|
|
let mut repos: Vec<PathBuf> = walker
|
|
.flatten()
|
|
.filter(|entry| entry.file_type().is_some_and(|kind| kind.is_dir()))
|
|
.map(ignore::DirEntry::into_path)
|
|
.filter(|dir| dir.join(".git").exists())
|
|
.filter_map(|dir| dir.canonicalize().ok())
|
|
.collect();
|
|
|
|
repos.sort();
|
|
repos.dedup();
|
|
|
|
// A repository nested inside another, like a submodule worktree, is not reported.
|
|
let mut roots: Vec<PathBuf> = Vec::with_capacity(repos.len());
|
|
for repo in repos {
|
|
if !roots.iter().any(|kept| repo.starts_with(kept)) {
|
|
roots.push(repo);
|
|
}
|
|
}
|
|
|
|
roots
|
|
}
|