xref: /aosp_15_r20/frameworks/minikin/rust/minikin.rs (revision 834a2baab5fdfc28e9a428ee87c7ea8f6a06a53d)

/*
 * Copyright 2024 The Android Open Source Project
 *
 * 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.
 */

//! The rust component of libminikin

mod hyphenator;

pub use hyphenator::Hyphenator;

#[allow(clippy::needless_maybe_sized)]
#[cxx::bridge(namespace = "minikin::rust")]
mod ffi {
    #[namespace = "minikin::rust"]
    unsafe extern "C++" {
        include!("ffi/IcuBridge.h");
        fn getScript(cp: u32) -> u8;
        fn getJoiningType(cp: u32) -> u8;
    }
    #[namespace = "minikin::rust"]
    extern "Rust" {
        type Hyphenator;
        fn load_hyphenator(
            data: &'static [u8],
            min_prefix: u32,
            min_suffix: u32,
            locale: String,
        ) -> Box<Hyphenator>;
        fn hyphenate(hyphenator: &Hyphenator, word: &[u16], out: &mut [u8]);
    }
}

fn load_hyphenator(
    data: &'static [u8],
    min_prefix: u32,
    min_suffix: u32,
    locale: String,
) -> Box<Hyphenator> {
    Box::new(Hyphenator::new(data, min_prefix, min_suffix, &locale))
}

fn hyphenate(hyphenator: &Hyphenator, word: &[u16], out: &mut [u8]) {
    hyphenator.hyphenate(word, out);
}