15 lines
4.4 KiB
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15 lines
4.4 KiB
HTML
<!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="API documentation for the Rust `is_utf8_bidi` fn in crate `encoding_rs`."><meta name="keywords" content="rust, rustlang, rust-lang, is_utf8_bidi"><title>encoding_rs::mem::is_utf8_bidi - Rust</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 fn"><!--[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">☰</div><a href='../../encoding_rs/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><div class="sidebar-elems"><p class='location'><a href='../index.html'>encoding_rs</a>::<wbr><a href='index.html'>mem</a></p><script>window.sidebarCurrent = {name: 'is_utf8_bidi', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></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"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled 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"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/encoding_rs/mem.rs.html#695-1109' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='../index.html'>encoding_rs</a>::<wbr><a href='index.html'>mem</a>::<wbr><a class="fn" href=''>is_utf8_bidi</a></span></h1><pre class='rust fn'>pub fn is_utf8_bidi(buffer: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></pre><div class='docblock'><p>Checks whether a potentially-invalid UTF-8 buffer contains code points
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that trigger right-to-left processing.</p>
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<p>The check is done on a Unicode block basis without regard to assigned
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vs. unassigned code points in the block. Hebrew presentation forms in
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the Alphabetic Presentation Forms block are treated as if they formed
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a block on their own (i.e. it treated as right-to-left). Additionally,
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the four RIGHT-TO-LEFT FOO controls in General Punctuation are checked
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for. Control characters that are technically bidi controls but do not
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cause right-to-left behavior without the presence of right-to-left
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characters or right-to-left controls are not checked for. As a special
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case, U+FEFF is excluded from Arabic Presentation Forms-B.</p>
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<p>Returns <code>true</code> if the input is invalid UTF-8 or the input contains an
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RTL character. Returns <code>false</code> if the input is valid UTF-8 and contains
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no RTL characters.</p>
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