Compile .po files

Since cargo is usually not run as root, we can't install .mo files to the standard location (/usr/local/share/locale/),
so we install them to ./translations and load them from there.

build.rs

@@ -1,4 +1,4 @@
-use std::fs::File;
+use std::fs::{create_dir_all, File};
 use std::io::{BufReader, prelude::*};
 use std::path::Path;
 use std::process::Command;
@@ -6,16 +6,12 @@ use std::process::Command;
 fn main() {
     update_po();
     compile_po();
-    install_po();
 }
 
 fn update_po() {
     let pot_path = Path::new("po").join("plume.pot");
 
-    let linguas_file = File::open(Path::new("po").join("LINGUAS")).expect("Couldn't find po/LINGUAS file");
-    let linguas = BufReader::new(&linguas_file);
-    for lang in linguas.lines() {
-        let lang = lang.unwrap();
+    for lang in get_locales() {
         let po_path = Path::new("po").join(format!("{}.po", lang.clone()));
         if po_path.exists() && po_path.is_file() {
             println!("Updating {}", lang.clone());
@@ -40,6 +36,25 @@ fn update_po() {
     }
 }
 
-fn compile_po() {}
+fn compile_po() {
+    for lang in get_locales() {
+        let po_path = Path::new("po").join(format!("{}.po", lang.clone()));
+        let mo_dir = Path::new("translations")
+            .join(lang.clone())
+            .join("LC_MESSAGES");
+        create_dir_all(mo_dir.clone()).expect("Couldn't create MO directory");
+        let mo_path = mo_dir.join("plume.mo");
 
-fn install_po() {}
+        Command::new("msgfmt")
+            .arg(format!("--output-file={}", mo_path.to_str().unwrap()))
+            .arg(po_path)
+            .spawn()
+            .expect("Couldn't compile translations");
+    }
+}
+
+fn get_locales() -> Vec<String> {
+    let linguas_file = File::open(Path::new("po").join("LINGUAS")).expect("Couldn't find po/LINGUAS file");
+    let linguas = BufReader::new(&linguas_file);
+    linguas.lines().map(Result::unwrap).collect()
+}

src/i18n.rs

@@ -1,5 +1,7 @@
 use gettextrs::*;
 use rocket::{Data, Request, Rocket, fairing::{Fairing, Info, Kind}};
+use std::fs;
+use std::path::PathBuf;
 
 const ACCEPT_LANG: &'static str = "Accept-Language";
 
@@ -24,7 +26,7 @@ impl Fairing for I18n {
     }
 
     fn on_attach(&self, rocket: Rocket) -> Result<Rocket, Rocket> {
-        bindtextdomain(self.domain, "/usr/local/share/locale");
+        bindtextdomain(self.domain, fs::canonicalize(&PathBuf::from("./translations")).unwrap().to_str().unwrap());
         textdomain(self.domain);
         Ok(rocket)
     }