lean_ctx/core/
data_dir.rs

1use std::path::PathBuf;
2
3/// Resolve the lean-ctx data directory.
4///
5/// Priority order (backward-compatible XDG migration):
6/// 1. `LEAN_CTX_DATA_DIR` env var (explicit override)
7/// 2. `~/.lean-ctx` if it already exists (don't break existing installs)
8/// 3. `$XDG_CONFIG_HOME/lean-ctx` (XDG compliant, default `~/.config/lean-ctx`)
9pub fn lean_ctx_data_dir() -> Result<PathBuf, String> {
10    if let Ok(dir) = std::env::var("LEAN_CTX_DATA_DIR") {
11        let trimmed = dir.trim();
12        if !trimmed.is_empty() {
13            let p = PathBuf::from(trimmed);
14            ensure_dir_permissions(&p);
15            return Ok(p);
16        }
17    }
18
19    let home = dirs::home_dir().ok_or_else(|| "Cannot determine home directory".to_string())?;
20
21    let legacy = home.join(".lean-ctx");
22    if legacy.exists() {
23        ensure_dir_permissions(&legacy);
24        return Ok(legacy);
25    }
26
27    let xdg_config = std::env::var("XDG_CONFIG_HOME")
28        .ok()
29        .filter(|s| !s.trim().is_empty())
30        .map_or_else(|| home.join(".config"), PathBuf::from);
31
32    let dir = xdg_config.join("lean-ctx");
33    ensure_dir_permissions(&dir);
34    Ok(dir)
35}
36
37#[cfg(unix)]
38fn ensure_dir_permissions(path: &std::path::Path) {
39    use std::os::unix::fs::PermissionsExt;
40    if path.is_dir() {
41        let _ = std::fs::set_permissions(path, std::fs::Permissions::from_mode(0o700));
42    }
43}
44
45#[cfg(not(unix))]
46fn ensure_dir_permissions(_path: &std::path::Path) {}
47
48pub fn test_env_lock() -> std::sync::MutexGuard<'static, ()> {
49    use std::sync::{Mutex, OnceLock};
50    static LOCK: OnceLock<Mutex<()>> = OnceLock::new();
51    let mutex = LOCK.get_or_init(|| Mutex::new(()));
52    mutex
53        .lock()
54        .unwrap_or_else(std::sync::PoisonError::into_inner)
55}
lean_ctx/core/data_dir.rs

lean_ctx/core/
data_dir.rs
