add gettext module

Author: squell

Cargo.lock

@@ -32,6 +32,7 @@ path = "bin/visudo.rs"
 [dependencies]
 libc = "0.2.152"
 glob = "0.3.0"
+gettext-sys = { version = ">=0.21.3", features = ["gettext-system"], optional = true }
 
 [features]
 default = []
@@ -44,6 +45,9 @@ pam-login = []
 # this enables enforcing of AppArmor profiles
 apparmor = []
 
+# whether to enable 'gettext' support for giving localized user-facing messages
+gettext = ["dep:gettext-sys"]
+
 # enable detailed logging (use for development only) to /tmp
 # this will compromise the security of sudo-rs somewhat
 dev = []

Cargo.toml

@@ -6,6 +6,9 @@ use std::{
     },
 };
 
+#[cfg(feature = "gettext")]
+pub mod gettext;
+
 pub fn cerr<Int: Copy + TryInto<libc::c_long>>(res: Int) -> std::io::Result<Int> {
     match res.try_into() {
         Ok(-1) => Err(std::io::Error::last_os_error()),