Remove the launcher and set the locale/current directory in alacritty (#879)

Cargo.lock

@@ -28,6 +28,7 @@ dependencies = [
  "mio 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-more 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "notify 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",

Cargo.toml

@@ -40,6 +40,9 @@ env_logger = "0.4"
 [target.'cfg(any(target_os = "linux", target_os = "freebsd", target_os="dragonfly", target_os="openbsd"))'.dependencies]
 x11-dl = "2"
 
+[target.'cfg(target_os = "macos")'.dependencies]
+objc = "0.2.2"
+
 [features]
 default = []
 # Enabling this feature makes shaders automatically reload when changed

assets/osx/Alacritty.app/Contents/Info.plist

@@ -5,9 +5,9 @@
     <key>CFBundleDisplayName</key>
     <string>Alacritty</string>
     <key>CFBundleExecutable</key>
-    <string>launcher</string>
+    <string>alacritty</string>
-    <!-- <key>CFBundleIdentifier</key> -->
+    <key>CFBundleIdentifier</key>
-    <!-- <string>alacritty</string> -->
+    <string>io.alacritty</string>
     <key>CFBundleName</key>
     <string>Alacritty</string>
     <key>CFBundleIconFile</key>

assets/osx/Alacritty.app/Contents/MacOS/launcher

@@ -1,15 +0,0 @@
-#!/bin/bash
-
-# Dynamically discover canonical path to alacritty binary
-BIN_DIR=$(cd "$(dirname "$0")"; pwd)
-
-# Query OS for locale and setup alacritty shell to conform
-ALACRITTY_LOCALE="$(osascript -e "return user locale of (get system info)")"
-export LANG="${ALACRITTY_LOCALE}.UTF-8"
-export LC_CTYPE="${ALACRITTY_LOCALE}.UTF-8"
-
-# Start alacritty in user's home directory
-cd "$HOME"
-
-# Engage
-exec "$BIN_DIR/alacritty"

src/lib.rs

@@ -29,6 +29,10 @@
 #[cfg(any(target_os = "linux", target_os = "freebsd", target_os="dragonfly", target_os="openbsd"))]
 extern crate x11_dl;
 
+#[cfg(target_os = "macos")]
+#[macro_use]
+extern crate objc;
+
 extern crate arraydeque;
 extern crate cgmath;
 extern crate copypasta;
@@ -61,6 +65,7 @@ pub mod event_loop;
 pub mod grid;
 pub mod index;
 pub mod input;
+pub mod locale;
 pub mod logging;
 pub mod meter;
 pub mod renderer;

src/locale.rs

@@ -0,0 +1,47 @@
+// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#![cfg(target_os = "macos")]
+use std::os::raw::c_char;
+use std::slice;
+use std::str;
+use std::env;
+
+use objc::runtime::{Class, Object};
+
+pub fn set_locale_environment() {
+    let locale_id = unsafe {
+        let locale_class = Class::get("NSLocale").unwrap();
+        let locale: *const Object = msg_send![locale_class, currentLocale];
+        msg_send![locale_class, release];
+        let identifier: *const Object = msg_send![locale, localeIdentifier];
+        msg_send![locale, release];
+        let identifier_str = nsstring_as_str(identifier).to_owned();
+        msg_send![identifier, release];
+        identifier_str
+    };
+    let locale_id = locale_id + ".UTF-8";
+    env::set_var("LANG", &locale_id);
+    env::set_var("LC_CTYPE", &locale_id);
+}
+
+const UTF8_ENCODING: usize = 4;
+
+unsafe fn nsstring_as_str<'a>(nsstring: *const Object) -> &'a str {
+    let cstr: *const c_char = msg_send![nsstring, UTF8String];
+    let len: usize = msg_send![nsstring, lengthOfBytesUsingEncoding:UTF8_ENCODING];
+    str::from_utf8(slice::from_raw_parts(cstr as *const u8, len)).unwrap()
+}
+
+#[cfg(not(target_os = "macos"))]
+pub fn set_locale_environment() {}

src/main.rs

@@ -24,12 +24,15 @@ extern crate log;
 
 use std::error::Error;
 use std::sync::Arc;
+use std::env;
 
 use alacritty::cli;
 use alacritty::config::{self, Config};
 use alacritty::display::Display;
 use alacritty::event;
 use alacritty::event_loop::{self, EventLoop, Msg};
+#[cfg(target_os = "macos")]
+use alacritty::locale;
 use alacritty::logging;
 use alacritty::sync::FairMutex;
 use alacritty::term::{Term};
@@ -41,6 +44,11 @@ fn main() {
     let options = cli::Options::load();
     let config = load_config(&options);
 
+    // Switch to home directory
+    env::set_current_dir(env::home_dir().unwrap()).unwrap();
+    #[cfg(target_os = "macos")]
+    locale::set_locale_environment();
+
     // Run alacritty
     if let Err(err) = run(config, &options) {
         die!("Alacritty encountered an unrecoverable error:\n\n\t{}\n", Red(err));