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author | Theodore Dubois <tblodt@icloud.com> | 2019-04-28 06:24:58 -0700 |
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committer | Christian Duerr <chrisduerr@users.noreply.github.com> | 2019-04-28 13:24:58 +0000 |
commit | dbd8538762ef8968a493e1bf996e8693479ca783 (patch) | |
tree | 32ac2a6a5e01238a272d4ba534551d2e42903c7a /alacritty_terminal/src/locale.rs | |
parent | 9c6d12ea2c863ba76015bdedc00db13b7307725a (diff) |
Split alacritty into a separate crates
The crate containing the entry point is called alacritty, and the crate
containing everything else is called alacritty_terminal.
Diffstat (limited to 'alacritty_terminal/src/locale.rs')
-rw-r--r-- | alacritty_terminal/src/locale.rs | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/alacritty_terminal/src/locale.rs b/alacritty_terminal/src/locale.rs new file mode 100644 index 00000000..40c915b5 --- /dev/null +++ b/alacritty_terminal/src/locale.rs @@ -0,0 +1,89 @@ +// 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. +#![allow(clippy::let_unit_value)] +#![cfg(target_os = "macos")] +use libc::{setlocale, LC_CTYPE}; +use std::env; +use std::ffi::{CStr, CString}; +use std::os::raw::c_char; +use std::ptr::null; +use std::slice; +use std::str; + +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]; + let _: () = msg_send![locale_class, release]; + // `localeIdentifier` returns extra metadata with the locale (including currency and + // collator) on newer versions of macOS. This is not a valid locale, so we use + // `languageCode` and `countryCode`, if they're available (macOS 10.12+): + // https://developer.apple.com/documentation/foundation/nslocale/1416263-localeidentifier?language=objc + // https://developer.apple.com/documentation/foundation/nslocale/1643060-countrycode?language=objc + // https://developer.apple.com/documentation/foundation/nslocale/1643026-languagecode?language=objc + let is_language_code_supported: bool = + msg_send![locale, respondsToSelector: sel!(languageCode)]; + let is_country_code_supported: bool = + msg_send![locale, respondsToSelector: sel!(countryCode)]; + let locale_id = if is_language_code_supported && is_country_code_supported { + let language_code: *const Object = msg_send![locale, languageCode]; + let country_code: *const Object = msg_send![locale, countryCode]; + let language_code_str = nsstring_as_str(language_code).to_owned(); + let _: () = msg_send![language_code, release]; + let country_code_str = nsstring_as_str(country_code).to_owned(); + let _: () = msg_send![country_code, release]; + format!("{}_{}.UTF-8", &language_code_str, &country_code_str) + } else { + let identifier: *const Object = msg_send![locale, localeIdentifier]; + let identifier_str = nsstring_as_str(identifier).to_owned(); + let _: () = msg_send![identifier, release]; + identifier_str + ".UTF-8" + }; + let _: () = msg_send![locale, release]; + locale_id + }; + // check if locale_id is valid + let locale_c_str = CString::new(locale_id.to_owned()).unwrap(); + let locale_ptr = locale_c_str.as_ptr(); + let locale_id = unsafe { + // save a copy of original setting + let original = setlocale(LC_CTYPE, null()); + let saved_original = if original.is_null() { + CString::new("").unwrap() + } else { + CStr::from_ptr(original).to_owned() + }; + // try setting `locale_id` + let modified = setlocale(LC_CTYPE, locale_ptr); + let result = if modified.is_null() { String::new() } else { locale_id }; + // restore original setting + setlocale(LC_CTYPE, saved_original.as_ptr()); + result + }; + + env::set_var("LANG", &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() {} |