firefox-main/intl/locale/rust/unic-langid-ffi/src/lib.rs (file symbol)

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
use nsstring::nsACString;
pub use unic_langid::{subtags, CharacterDirection, LanguageIdentifier, LanguageIdentifierError};
pub fn new_langid_for_mozilla(
name: &nsACString,
) -> Result<LanguageIdentifier, LanguageIdentifierError> {
if name.eq_ignore_ascii_case(b"ja-jp-mac") {
"ja-JP-macos".parse()
} else {
// Cut out any `.FOO` like `en-US.POSIX`.
let mut name: &[u8] = name.as_ref();
if let Some(ptr) = name.iter().position(|b| b == &b'.') {
name = &name[..ptr];
}
LanguageIdentifier::from_bytes(name)
}
}
#[no_mangle]
pub extern "C" fn unic_langid_canonicalize(name: &mut nsACString) -> bool {
let langid = new_langid_for_mozilla(name);
let result = langid.is_ok();
name.assign(&langid.unwrap_or_default().to_string());
result
}
#[no_mangle]
pub unsafe extern "C" fn unic_langid_destroy(langid: *mut LanguageIdentifier) {
let _ = Box::from_raw(langid);
}
#[no_mangle]
pub extern "C" fn unic_langid_is_rtl(name: &nsACString) -> bool {
match new_langid_for_mozilla(name) {
Ok(langid) => langid.character_direction() == CharacterDirection::RTL,
Err(_) => false,
}
}