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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 to the Rust file `C:\Users\evilc\.cargo\registry\src\github.com-1ecc6299db9ec823\ucd-util-0.1.5\src\hangul.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>hangul.rs.html -- source</title><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="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../../ucd_util/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press S to search, ? for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><div class="example-wrap"><pre class="rust ">
<span class="kw">use</span> <span class="ident">unicode_tables</span>::<span class="ident">jamo_short_name</span>::<span class="ident">JAMO_SHORT_NAME</span>;
<span class="comment">// This implementation should correspond to the algorithms described in</span>
<span class="comment">// Unicode 3.12.</span>
<span class="doccomment">/// A set of ranges that corresponds to the set of all Hangul syllable</span>
<span class="doccomment">/// codepoints.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// These ranges are defined in Unicode 4.8 Table 4-13.</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">RANGE_HANGUL_SYLLABLE</span>: <span class="kw-2">&amp;</span><span class="lifetime">&#39;static</span> [(<span class="ident">u32</span>, <span class="ident">u32</span>)] <span class="op">=</span> <span class="kw-2">&amp;</span>[
(<span class="number">0xAC00</span>, <span class="number">0xD7A3</span>),
];
<span class="kw">const</span> <span class="ident">S_BASE</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">0xAC00</span>;
<span class="kw">const</span> <span class="ident">L_BASE</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">0x1100</span>;
<span class="kw">const</span> <span class="ident">V_BASE</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">0x1161</span>;
<span class="kw">const</span> <span class="ident">T_BASE</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">0x11A7</span>;
<span class="kw">const</span> <span class="ident">T_COUNT</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">28</span>;
<span class="kw">const</span> <span class="ident">N_COUNT</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">588</span>;
<span class="doccomment">/// Return the character name of the given precomposed Hangul codepoint.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the given codepoint does not correspond to a precomposed Hangul</span>
<span class="doccomment">/// codepoint in the inclusive range `AC00..D7A3`, then this returns `None`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This implements the algorithms described in Unicode 3.12 and Unicode 4.8.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">hangul_name</span>(<span class="ident">cp</span>: <span class="ident">u32</span>) <span class="op">-&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">name</span> <span class="op">=</span> <span class="string">&quot;HANGUL SYLLABLE &quot;</span>.<span class="ident">to_string</span>();
<span class="kw">let</span> (<span class="ident">lpart</span>, <span class="ident">vpart</span>, <span class="ident">tpart</span>) <span class="op">=</span> <span class="kw">match</span> <span class="ident">hangul_full_canonical_decomposition</span>(<span class="ident">cp</span>) {
<span class="prelude-val">None</span> <span class="op">=&gt;</span> <span class="kw">return</span> <span class="prelude-val">None</span>,
<span class="prelude-val">Some</span>(<span class="ident">triple</span>) <span class="op">=&gt;</span> <span class="ident">triple</span>,
};
<span class="ident">name</span>.<span class="ident">push_str</span>(<span class="ident">jamo_short_name</span>(<span class="ident">lpart</span>));
<span class="ident">name</span>.<span class="ident">push_str</span>(<span class="ident">jamo_short_name</span>(<span class="ident">vpart</span>));
<span class="ident">name</span>.<span class="ident">push_str</span>(<span class="ident">tpart</span>.<span class="ident">map_or</span>(<span class="string">&quot;&quot;</span>, <span class="ident">jamo_short_name</span>));
<span class="prelude-val">Some</span>(<span class="ident">name</span>)
}
<span class="doccomment">/// Return the full canonical decomposition of the given precomposed Hangul</span>
<span class="doccomment">/// codepoint.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the decomposition does not have any trailing consonant, then the third</span>
<span class="doccomment">/// part of the tuple returned is `None`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the given codepoint does not correspond to a precomposed Hangul</span>
<span class="doccomment">/// codepoint in the inclusive range `AC00..D7A3`, then this returns `None`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This implements the algorithms described in Unicode 3.12 and Unicode 4.8.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">hangul_full_canonical_decomposition</span>(
<span class="ident">cp</span>: <span class="ident">u32</span>,
) <span class="op">-&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span>(<span class="ident">u32</span>, <span class="ident">u32</span>, <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">u32</span><span class="op">&gt;</span>)<span class="op">&gt;</span> {
<span class="kw">if</span> <span class="op">!</span>(<span class="number">0xAC00</span> <span class="op">&lt;=</span> <span class="ident">cp</span> <span class="op">&amp;&amp;</span> <span class="ident">cp</span> <span class="op">&lt;=</span> <span class="number">0xD7A3</span>) {
<span class="kw">return</span> <span class="prelude-val">None</span>;
}
<span class="kw">let</span> <span class="ident">s_index</span> <span class="op">=</span> <span class="ident">cp</span> <span class="op">-</span> <span class="ident">S_BASE</span>;
<span class="kw">let</span> <span class="ident">l_index</span> <span class="op">=</span> <span class="ident">s_index</span> <span class="op">/</span> <span class="ident">N_COUNT</span>;
<span class="kw">let</span> <span class="ident">v_index</span> <span class="op">=</span> (<span class="ident">s_index</span> <span class="op">%</span> <span class="ident">N_COUNT</span>) <span class="op">/</span> <span class="ident">T_COUNT</span>;
<span class="kw">let</span> <span class="ident">t_index</span> <span class="op">=</span> <span class="ident">s_index</span> <span class="op">%</span> <span class="ident">T_COUNT</span>;
<span class="kw">let</span> <span class="ident">l_part</span> <span class="op">=</span> <span class="ident">L_BASE</span> <span class="op">+</span> <span class="ident">l_index</span>;
<span class="kw">let</span> <span class="ident">v_part</span> <span class="op">=</span> <span class="ident">V_BASE</span> <span class="op">+</span> <span class="ident">v_index</span>;
<span class="kw">let</span> <span class="ident">t_part</span> <span class="op">=</span>
<span class="kw">if</span> <span class="ident">t_index</span> <span class="op">==</span> <span class="number">0</span> {
<span class="prelude-val">None</span>
} <span class="kw">else</span> {
<span class="prelude-val">Some</span>(<span class="ident">T_BASE</span> <span class="op">+</span> <span class="ident">t_index</span>)
};
<span class="prelude-val">Some</span>((<span class="ident">l_part</span>, <span class="ident">v_part</span>, <span class="ident">t_part</span>))
}
<span class="kw">fn</span> <span class="ident">jamo_short_name</span>(<span class="ident">cp</span>: <span class="ident">u32</span>) <span class="op">-&gt;</span> <span class="kw-2">&amp;</span><span class="lifetime">&#39;static</span> <span class="ident">str</span> {
<span class="kw">let</span> <span class="ident">i</span> <span class="op">=</span> <span class="ident">JAMO_SHORT_NAME</span>.<span class="ident">binary_search_by_key</span>(<span class="kw-2">&amp;</span><span class="ident">cp</span>, <span class="op">|</span><span class="ident">p</span><span class="op">|</span> <span class="ident">p</span>.<span class="number">0</span>).<span class="ident">unwrap</span>();
<span class="ident">JAMO_SHORT_NAME</span>[<span class="ident">i</span>].<span class="number">1</span>
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">hangul_name</span>, <span class="ident">hangul_full_canonical_decomposition</span>};
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">canon_decomp</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(
<span class="ident">hangul_full_canonical_decomposition</span>(<span class="number">0xD4DB</span>),
<span class="prelude-val">Some</span>((<span class="number">0x1111</span>, <span class="number">0x1171</span>, <span class="prelude-val">Some</span>(<span class="number">0x11B6</span>))));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">name</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hangul_name</span>(<span class="number">0xD4DB</span>).<span class="ident">unwrap</span>(), <span class="string">&quot;HANGUL SYLLABLE PWILH&quot;</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">all</span>() {
<span class="kw">for</span> <span class="ident">cp</span> <span class="kw">in</span> <span class="number">0xAC00</span>..(<span class="number">0xD7A3</span> <span class="op">+</span> <span class="number">1</span>) {
<span class="ident">hangul_name</span>(<span class="ident">cp</span>).<span class="ident">unwrap</span>();
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">invalid</span>() {
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">hangul_name</span>(<span class="number">0</span>).<span class="ident">is_none</span>());
}
}
</pre></div>
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