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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/unicode-normalization-0.1.21/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" href="https://unicode-rs.github.io/unicode-rs_sm.png"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../unicode_normalization/index.html"><div class="logo-container"><img src="https://unicode-rs.github.io/unicode-rs_sm.png" alt="logo"></div>
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</pre><pre class="rust"><code><span class="comment">// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="doccomment">//! Unicode character composition and decomposition utilities</span>
<span class="doccomment">//! as described in</span>
<span class="doccomment">//! [Unicode Standard Annex #15](http://www.unicode.org/reports/tr15/).</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```rust</span>
<span class="doccomment">//! extern crate unicode_normalization;</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! use unicode_normalization::char::compose;</span>
<span class="doccomment">//! use unicode_normalization::UnicodeNormalization;</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! fn main() {</span>
<span class="doccomment">//! assert_eq!(compose('A','\u{30a}'), Some('Å'));</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let s = "ÅΩ";</span>
<span class="doccomment">//! let c = s.nfc().collect::<String>();</span>
<span class="doccomment">//! assert_eq!(c, "ÅΩ");</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! # crates.io</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! You can use this package in your project by adding the following</span>
<span class="doccomment">//! to your `Cargo.toml`:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```toml</span>
<span class="doccomment">//! [dependencies]</span>
<span class="doccomment">//! unicode-normalization = "0.1.20"</span>
<span class="doccomment">//! ```</span>
<span class="attribute">#![<span class="ident">deny</span>(<span class="ident">missing_docs</span>, <span class="ident">unsafe_code</span>)]</span>
<span class="attribute">#![<span class="ident">doc</span>(
<span class="ident">html_logo_url</span> <span class="op">=</span> <span class="string">"https://unicode-rs.github.io/unicode-rs_sm.png"</span>,
<span class="ident">html_favicon_url</span> <span class="op">=</span> <span class="string">"https://unicode-rs.github.io/unicode-rs_sm.png"</span>
)]</span>
<span class="attribute">#![<span class="ident">cfg_attr</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>), <span class="ident">no_std</span>)]</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>))]</span>
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">alloc</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>)]</span>
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">core</span>;
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">tinyvec</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::decompose::Decompositions</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::quick_check</span>::{
<span class="ident">is_nfc</span>, <span class="ident">is_nfc_quick</span>, <span class="ident">is_nfc_stream_safe</span>, <span class="ident">is_nfc_stream_safe_quick</span>, <span class="ident">is_nfd</span>, <span class="ident">is_nfd_quick</span>,
<span class="ident">is_nfd_stream_safe</span>, <span class="ident">is_nfd_stream_safe_quick</span>, <span class="ident">is_nfkc</span>, <span class="ident">is_nfkc_quick</span>, <span class="ident">is_nfkd</span>, <span class="ident">is_nfkd_quick</span>,
<span class="ident">IsNormalized</span>,
};
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::recompose::Recompositions</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::replace::Replacements</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::stream_safe::StreamSafe</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::tables::UNICODE_VERSION</span>;
<span class="kw">use</span> <span class="ident">core</span>::{
<span class="ident">str::Chars</span>,
<span class="ident">option</span>,
};
<span class="kw">mod</span> <span class="ident">no_std_prelude</span>;
<span class="kw">mod</span> <span class="ident">decompose</span>;
<span class="kw">mod</span> <span class="ident">lookups</span>;
<span class="kw">mod</span> <span class="ident">normalize</span>;
<span class="kw">mod</span> <span class="ident">perfect_hash</span>;
<span class="kw">mod</span> <span class="ident">quick_check</span>;
<span class="kw">mod</span> <span class="ident">recompose</span>;
<span class="kw">mod</span> <span class="ident">replace</span>;
<span class="kw">mod</span> <span class="ident">stream_safe</span>;
<span class="attribute">#[<span class="ident">rustfmt::skip</span>]</span>
<span class="kw">mod</span> <span class="ident">tables</span>;
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">__test_api</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">test</span>;
<span class="doccomment">/// Methods for composing and decomposing characters.</span>
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">char</span> {
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::normalize</span>::{
<span class="ident">compose</span>, <span class="ident">decompose_canonical</span>, <span class="ident">decompose_cjk_compat_variants</span>, <span class="ident">decompose_compatible</span>,
};
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::lookups</span>::{<span class="ident">canonical_combining_class</span>, <span class="ident">is_combining_mark</span>};
<span class="doccomment">/// Return whether the given character is assigned (`General_Category` != `Unassigned`)</span>
<span class="doccomment">/// and not Private-Use (`General_Category` != `Private_Use`), in the supported version</span>
<span class="doccomment">/// of Unicode.</span>
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::tables::is_public_assigned</span>;
}
<span class="doccomment">/// Methods for iterating over strings while applying Unicode normalizations</span>
<span class="doccomment">/// as described in</span>
<span class="doccomment">/// [Unicode Standard Annex #15](http://www.unicode.org/reports/tr15/).</span>
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">UnicodeNormalization</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span><span class="op">></span> {
<span class="doccomment">/// Returns an iterator over the string in Unicode Normalization Form D</span>
<span class="doccomment">/// (canonical decomposition).</span>
<span class="kw">fn</span> <span class="ident">nfd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>;
<span class="doccomment">/// Returns an iterator over the string in Unicode Normalization Form KD</span>
<span class="doccomment">/// (compatibility decomposition).</span>
<span class="kw">fn</span> <span class="ident">nfkd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>;
<span class="doccomment">/// An Iterator over the string in Unicode Normalization Form C</span>
<span class="doccomment">/// (canonical decomposition followed by canonical composition).</span>
<span class="kw">fn</span> <span class="ident">nfc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>;
<span class="doccomment">/// An Iterator over the string in Unicode Normalization Form KC</span>
<span class="doccomment">/// (compatibility decomposition followed by canonical composition).</span>
<span class="kw">fn</span> <span class="ident">nfkc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>;
<span class="doccomment">/// A transformation which replaces CJK Compatibility Ideograph codepoints</span>
<span class="doccomment">/// with normal forms using Standardized Variation Sequences. This is not</span>
<span class="doccomment">/// part of the canonical or compatibility decomposition algorithms, but</span>
<span class="doccomment">/// performing it before those algorithms produces normalized output which</span>
<span class="doccomment">/// better preserves the intent of the original text.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that many systems today ignore variation selectors, so these</span>
<span class="doccomment">/// may not immediately help text display as intended, but they at</span>
<span class="doccomment">/// least preserve the information in a standardized form, giving</span>
<span class="doccomment">/// implementations the option to recognize them.</span>
<span class="kw">fn</span> <span class="ident">cjk_compat_variants</span>(<span class="self">self</span>) -> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>;
<span class="doccomment">/// An Iterator over the string with Conjoining Grapheme Joiner characters</span>
<span class="doccomment">/// inserted according to the Stream-Safe Text Process (UAX15-D4)</span>
<span class="kw">fn</span> <span class="ident">stream_safe</span>(<span class="self">self</span>) -> <span class="ident">StreamSafe</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>;
}
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">UnicodeNormalization</span><span class="op"><</span><span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span><span class="op">></span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">str</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span><span class="op">></span> {
<span class="ident">decompose::new_canonical</span>(<span class="self">self</span>.<span class="ident">chars</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfkd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span><span class="op">></span> {
<span class="ident">decompose::new_compatible</span>(<span class="self">self</span>.<span class="ident">chars</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span><span class="op">></span> {
<span class="ident">recompose::new_canonical</span>(<span class="self">self</span>.<span class="ident">chars</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfkc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span><span class="op">></span> {
<span class="ident">recompose::new_compatible</span>(<span class="self">self</span>.<span class="ident">chars</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">cjk_compat_variants</span>(<span class="self">self</span>) -> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span><span class="op">></span> {
<span class="ident">replace::new_cjk_compat_variants</span>(<span class="self">self</span>.<span class="ident">chars</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">stream_safe</span>(<span class="self">self</span>) -> <span class="ident">StreamSafe</span><span class="op"><</span><span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span><span class="op">></span> {
<span class="ident">StreamSafe::new</span>(<span class="self">self</span>.<span class="ident">chars</span>())
}
}
<span class="kw">impl</span> <span class="ident">UnicodeNormalization</span><span class="op"><</span><span class="ident">option::IntoIter</span><span class="op"><</span><span class="ident">char</span><span class="op">></span><span class="op">></span> <span class="kw">for</span> <span class="ident">char</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">option::IntoIter</span><span class="op"><</span><span class="ident">char</span><span class="op">></span><span class="op">></span> {
<span class="ident">decompose::new_canonical</span>(<span class="prelude-val">Some</span>(<span class="self">self</span>).<span class="ident">into_iter</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfkd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">option::IntoIter</span><span class="op"><</span><span class="ident">char</span><span class="op">></span><span class="op">></span> {
<span class="ident">decompose::new_compatible</span>(<span class="prelude-val">Some</span>(<span class="self">self</span>).<span class="ident">into_iter</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">option::IntoIter</span><span class="op"><</span><span class="ident">char</span><span class="op">></span><span class="op">></span> {
<span class="ident">recompose::new_canonical</span>(<span class="prelude-val">Some</span>(<span class="self">self</span>).<span class="ident">into_iter</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfkc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">option::IntoIter</span><span class="op"><</span><span class="ident">char</span><span class="op">></span><span class="op">></span> {
<span class="ident">recompose::new_compatible</span>(<span class="prelude-val">Some</span>(<span class="self">self</span>).<span class="ident">into_iter</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">cjk_compat_variants</span>(<span class="self">self</span>) -> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">option::IntoIter</span><span class="op"><</span><span class="ident">char</span><span class="op">></span><span class="op">></span> {
<span class="ident">replace::new_cjk_compat_variants</span>(<span class="prelude-val">Some</span>(<span class="self">self</span>).<span class="ident">into_iter</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">stream_safe</span>(<span class="self">self</span>) -> <span class="ident">StreamSafe</span><span class="op"><</span><span class="ident">option::IntoIter</span><span class="op"><</span><span class="ident">char</span><span class="op">></span><span class="op">></span> {
<span class="ident">StreamSafe::new</span>(<span class="prelude-val">Some</span>(<span class="self">self</span>).<span class="ident">into_iter</span>())
}
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span><span class="op">></span> <span class="ident">UnicodeNormalization</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> <span class="kw">for</span> <span class="ident">I</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">decompose::new_canonical</span>(<span class="self">self</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfkd</span>(<span class="self">self</span>) -> <span class="ident">Decompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">decompose::new_compatible</span>(<span class="self">self</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">recompose::new_canonical</span>(<span class="self">self</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">nfkc</span>(<span class="self">self</span>) -> <span class="ident">Recompositions</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">recompose::new_compatible</span>(<span class="self">self</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">cjk_compat_variants</span>(<span class="self">self</span>) -> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">replace::new_cjk_compat_variants</span>(<span class="self">self</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">stream_safe</span>(<span class="self">self</span>) -> <span class="ident">StreamSafe</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">StreamSafe::new</span>(<span class="self">self</span>)
}
}
</code></pre></div>
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