Add a build script to update/create translation files

build.rs

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+use std::fs::File;
+use std::io::{BufReader, prelude::*};
+use std::path::Path;
+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();
+        let po_path = Path::new("po").join(format!("{}.po", lang.clone()));
+        if po_path.exists() && po_path.is_file() {
+            println!("Updating {}", lang.clone());
+            // Update it
+            Command::new("msgmerge")
+                .arg(po_path.to_str().unwrap())
+                .arg(pot_path.to_str().unwrap())
+                .spawn()
+                .expect("Couldn't update PO file");
+        } else {
+            println!("Creating {}", lang.clone());
+            // Create it from the template
+            Command::new("msginit")
+                .arg(format!("--input={}", pot_path.to_str().unwrap()))
+                .arg(format!("--output-file={}", po_path.to_str().unwrap()))
+                .arg("-l")
+                .arg(lang)
+                .arg("--no-translator")
+                .spawn()
+                .expect("Couldn't init PO file");
+        }
+    }
+}
+
+fn compile_po() {}
+
+fn install_po() {}

po/LINGUAS

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+en
+fr

po/en.po

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+msgid ""
+msgstr ""
+"Project-Id-Version: plume\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-06-15 16:33-0700\n"
+"PO-Revision-Date: 2018-06-15 16:35+0100\n"
+"Last-Translator: baptiste <baptiste@gelez.xyz>\n"
+"Language-Team: English\n"
+"Language: en_US\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+msgid "Welcome on %s"
+msgstr "Welcome on %s"

po/fr.po

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+msgid ""
+msgstr ""
+"Project-Id-Version: plume\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-06-15 16:33-0700\n"
+"PO-Revision-Date: 2018-06-15 16:33-0700\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: fr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+
+msgid "Welcome on %s"
+msgstr ""

po/plume.pot

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+msgid ""
+msgstr ""
+"Project-Id-Version: plume\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-06-15 16:33-0700\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\n"
+
+msgid "Welcome on %s"
+msgstr ""