Files
ghostty-rs/crates/ghostty-os/src/locale.rs
T
ddidderr b681241359 feat(os): port Ghostty's Linux OS helpers
Ports ZIG/src/os for Linux into ghostty-os: XDG dirs, home dir, hostname,
env/PATH helpers, passwd lookup (via nix), shell detection, resources
dir discovery, string encodings (printf-q, URL percent), systemd
sd_notify, i18n via gettextrs, xdg-open, desktop/cgroup/kernel info,
temp dirs, URI parsing (port of std.Uri incl. Ghostty's extra options),
and a zbus-based Flatpak HostCommand implementation.

The crate stays free of unsafe. Consequences, all tracked as
TODO(integration) in docs/rewrite/notes/ghostty-os.md:
- locale::ensure_locale is a no-op (setlocale/setenv are unsafe; GTK
  calls setlocale itself); setenv/unsetenv are not exposed.
- passwd's Flatpak branch needs the termio pty and falls back to the
  sandbox entry for now.
- FlatpakHostCommand's D-Bus path is untested (no portal here).
Intentional fix: a leading '@' in NOTIFY_SOCKET is treated as an
abstract socket.

macOS/Windows/WASM modules are out of scope.

Test Plan:
- cargo test -p ghostty-os (88 tests)
- cargo clippy -p ghostty-os --all-targets -- -D warnings
2026-10-11 21:54:11 +02:00

45 lines
1.7 KiB
Rust

//! Locale setup (`os/locale.zig`).
//!
//! DEFERRED: the Zig `ensureLocale` is built from `setlocale(LC_ALL, "")`
//! plus `setenv`/`unsetenv` of `LANG`. All of these are `unsafe` in Rust
//! (`libc::setlocale`, `gettextrs::setlocale` and Rust 2024's
//! `std::env::set_var`) and this crate forbids `unsafe`. There is no safe
//! crate that wraps `setlocale`.
//!
//! Resolution options for integration:
//! * GTK (`gtk_init`, called by `gtk4::init()`) already calls
//! `setlocale(LC_ALL, "")` on Linux, so for the GTK apprt nothing else is
//! needed for gettext/Pango to pick up the locale.
//! * If an explicit call is needed (e.g. CLI actions without GTK), an
//! `unsafe`-permitted crate (apprt-gtk / the root binary) must perform the
//! libc call; [`FALLBACK_LOCALE`] documents the Zig fallback behaviour
//! (try `setlocale(LC_ALL, "")`, then with `LANG` unset, then
//! `en_US.UTF-8` and export `LANG=en_US.UTF-8`).
//!
//! The macOS-specific `LANG` population from Cocoa is not applicable.
/// The locale Ghostty falls back to (and exports as `LANG`) when the
/// environment's locale can't be set.
pub const FALLBACK_LOCALE: &str = "en_US.UTF-8";
/// Ensure that the locale is set.
///
/// DEFERRED (see module docs): this is currently a no-op that only logs.
/// Returns `Some(value)` when `LANG` should be set to `value` for child
/// processes; always `None` for now.
pub fn ensure_locale() -> Option<String> {
log::debug!("ensure_locale: setlocale is not available from safe Rust; relying on the toolkit");
None
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn ensure_locale_is_noop() {
assert_eq!(ensure_locale(), None);
assert_eq!(FALLBACK_LOCALE, "en_US.UTF-8");
}
}