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// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Unicode character composition and decomposition utilities
//! as described in
//! [Unicode Standard Annex #15](http://www.unicode.org/reports/tr15/).
//!
//! ```rust
//! extern crate unicode_normalization;
//!
//! use unicode_normalization::char::compose;
//! use unicode_normalization::UnicodeNormalization;
//!
//! fn main() {
//! assert_eq!(compose('A','\u{30a}'), Some('Å'));
//!
//! let s = "ÅΩ";
//! let c = s.nfc().collect::<String>();
//! assert_eq!(c, "ÅΩ");
//! }
//! ```
//!
//! # crates.io
//!
//! You can use this package in your project by adding the following
//! to your `Cargo.toml`:
//!
//! ```toml
//! [dependencies]
//! unicode-normalization = "0.1.0"
//! ```
#![deny(missing_docs, unsafe_code)]
#![doc(html_logo_url = "https://unicode-rs.github.io/unicode-rs_sm.png",
html_favicon_url = "https://unicode-rs.github.io/unicode-rs_sm.png")]
pub use tables::UNICODE_VERSION;
pub use decompose::Decompositions;
pub use recompose::Recompositions;
use std::str::Chars;
mod decompose;
mod normalize;
mod recompose;
mod tables;
#[cfg(test)]
mod test;
#[cfg(test)]
mod testdata;
/// Methods for composing and decomposing characters.
pub mod char {
pub use normalize::{decompose_canonical, decompose_compatible, compose};
/// Look up the canonical combining class of a character.
pub use tables::normalization::canonical_combining_class;
/// Return whether the given character is a combining mark (`General_Category=Mark`)
pub use tables::normalization::is_combining_mark;
}
/// Methods for iterating over strings while applying Unicode normalizations
/// as described in
/// [Unicode Standard Annex #15](http://www.unicode.org/reports/tr15/).
pub trait UnicodeNormalization<I: Iterator<Item=char>> {
/// Returns an iterator over the string in Unicode Normalization Form D
/// (canonical decomposition).
#[inline]
fn nfd(self) -> Decompositions<I>;
/// Returns an iterator over the string in Unicode Normalization Form KD
/// (compatibility decomposition).
#[inline]
fn nfkd(self) -> Decompositions<I>;
/// An Iterator over the string in Unicode Normalization Form C
/// (canonical decomposition followed by canonical composition).
#[inline]
fn nfc(self) -> Recompositions<I>;
/// An Iterator over the string in Unicode Normalization Form KC
/// (compatibility decomposition followed by canonical composition).
#[inline]
fn nfkc(self) -> Recompositions<I>;
}
impl<'a> UnicodeNormalization<Chars<'a>> for &'a str {
#[inline]
fn nfd(self) -> Decompositions<Chars<'a>> {
decompose::new_canonical(self.chars())
}
#[inline]
fn nfkd(self) -> Decompositions<Chars<'a>> {
decompose::new_compatible(self.chars())
}
#[inline]
fn nfc(self) -> Recompositions<Chars<'a>> {
recompose::new_canonical(self.chars())
}
#[inline]
fn nfkc(self) -> Recompositions<Chars<'a>> {
recompose::new_compatible(self.chars())
}
}
impl<I: Iterator<Item=char>> UnicodeNormalization<I> for I {
#[inline]
fn nfd(self) -> Decompositions<I> {
decompose::new_canonical(self)
}
#[inline]
fn nfkd(self) -> Decompositions<I> {
decompose::new_compatible(self)
}
#[inline]
fn nfc(self) -> Recompositions<I> {
recompose::new_canonical(self)
}
#[inline]
fn nfkc(self) -> Recompositions<I> {
recompose::new_compatible(self)
}
}
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