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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, nsCStr, nsCString};
use thin_vec::ThinVec;
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 extern "C" fn unic_langid_new(
name: &nsACString,
ret_val: &mut bool,
) -> *mut LanguageIdentifier {
let langid = new_langid_for_mozilla(name);
*ret_val = langid.is_ok();
Box::into_raw(Box::new(langid.unwrap_or_default()))
}
#[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_as_string(langid: &mut LanguageIdentifier, ret_val: &mut nsACString) {
ret_val.assign(&langid.to_string());
}
#[no_mangle]
pub extern "C" fn unic_langid_get_language<'a>(
langid: &'a LanguageIdentifier,
out: &mut nsCStr<'a>,
) {
*out = nsCStr::from(langid.language.as_str());
}
#[no_mangle]
pub extern "C" fn unic_langid_set_language(
langid: &mut LanguageIdentifier,
string: &nsACString,
) -> bool {
subtags::Language::from_bytes(string)
.map(|lang| langid.language = lang)
.is_ok()
}
#[no_mangle]
pub extern "C" fn unic_langid_clear_language(langid: &mut LanguageIdentifier) {
langid.language.clear()
}
#[no_mangle]
pub extern "C" fn unic_langid_get_script<'a>(langid: &'a LanguageIdentifier, out: &mut nsCStr<'a>) {
*out = nsCStr::from(langid.script.as_ref().map_or("", |s| s.as_str()));
}
#[no_mangle]
pub extern "C" fn unic_langid_set_script(
langid: &mut LanguageIdentifier,
string: &nsACString,
) -> bool {
subtags::Script::from_bytes(string)
.map(|script| langid.script = Some(script))
.is_ok()
}
#[no_mangle]
pub extern "C" fn unic_langid_clear_script(langid: &mut LanguageIdentifier) {
langid.script = None;
}
#[no_mangle]
pub extern "C" fn unic_langid_get_region<'a>(langid: &'a LanguageIdentifier, out: &mut nsCStr<'a>) {
*out = nsCStr::from(langid.region.as_ref().map_or("", |s| s.as_str()));
}
#[no_mangle]
pub extern "C" fn unic_langid_set_region(
langid: &mut LanguageIdentifier,
string: &nsACString,
) -> bool {
subtags::Region::from_bytes(string)
.map(|region| langid.region = Some(region))
.is_ok()
}
#[no_mangle]
pub extern "C" fn unic_langid_clear_region(langid: &mut LanguageIdentifier) {
langid.region = None;
}
#[no_mangle]
pub extern "C" fn unic_langid_get_variants(
langid: &LanguageIdentifier,
variants: &mut ThinVec<nsCString>,
) {
for v in langid.variants() {
variants.push(v.as_str().into());
}
}
#[no_mangle]
pub extern "C" fn unic_langid_set_variants(
langid: &mut LanguageIdentifier,
variants: &ThinVec<nsCString>,
) -> bool {
variants
.iter()
.map(|v| subtags::Variant::from_bytes(v))
.collect::<Result<Vec<_>, _>>()
.map(|variants| langid.set_variants(&variants))
.is_ok()
}
#[no_mangle]
pub extern "C" fn unic_langid_clear_variants(langid: &mut LanguageIdentifier) {
langid.clear_variants()
}
#[no_mangle]
pub extern "C" fn unic_langid_matches(
langid: &LanguageIdentifier,
other: &LanguageIdentifier,
self_as_range: bool,
other_as_range: bool,
) -> bool {
langid.matches(other, self_as_range, other_as_range)
}
#[no_mangle]
pub extern "C" fn unic_langid_maximize(langid: &mut LanguageIdentifier) -> bool {
langid.maximize()
}
#[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,
}
}
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