<!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 `libstd/sys/unix/os_str.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>os_str.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><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></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">☰</div><a href='../../../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></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"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><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><pre class="rust ">
<span class="comment">// Copyright 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">/// The underlying OsString/OsStr implementation on Unix systems: just</span>
<span class="doccomment">/// a `Vec<u8>`/`[u8]`.</span>
<span class="kw">use</span> <span class="ident">borrow</span>::<span class="ident">Cow</span>;
<span class="kw">use</span> <span class="ident">fmt</span>;
<span class="kw">use</span> <span class="ident">str</span>;
<span class="kw">use</span> <span class="ident">mem</span>;
<span class="kw">use</span> <span class="ident">rc</span>::<span class="ident">Rc</span>;
<span class="kw">use</span> <span class="ident">sync</span>::<span class="ident">Arc</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::{<span class="ident">AsInner</span>, <span class="ident">IntoInner</span>};
<span class="kw">use</span> <span class="ident">sys_common</span>::<span class="ident">bytestring</span>::<span class="ident">debug_fmt_bytestring</span>;
<span class="kw">use</span> <span class="ident">core</span>::<span class="ident">str</span>::<span class="ident">lossy</span>::<span class="ident">Utf8Lossy</span>;
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Hash</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Buf</span> {
<span class="kw">pub</span> <span class="ident">inner</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>
}
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Slice</span> {
<span class="kw">pub</span> <span class="ident">inner</span>: [<span class="ident">u8</span>]
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Slice</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">debug_fmt_bytestring</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">formatter</span>)
}
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">Slice</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">fmt</span>::<span class="ident">Display</span>::<span class="ident">fmt</span>(<span class="kw-2">&</span><span class="ident">Utf8Lossy</span>::<span class="ident">from_bytes</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>), <span class="ident">formatter</span>)
}
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Buf</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">fmt</span>::<span class="ident">Debug</span>::<span class="ident">fmt</span>(<span class="self">self</span>.<span class="ident">as_slice</span>(), <span class="ident">formatter</span>)
}
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">Buf</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">fmt</span>::<span class="ident">Display</span>::<span class="ident">fmt</span>(<span class="self">self</span>.<span class="ident">as_slice</span>(), <span class="ident">formatter</span>)
}
}
<span class="kw">impl</span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">>></span> <span class="kw">for</span> <span class="ident">Buf</span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>
}
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span>[<span class="ident">u8</span>]<span class="op">></span> <span class="kw">for</span> <span class="ident">Buf</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span>[<span class="ident">u8</span>] {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>
}
}
<span class="kw">impl</span> <span class="ident">Buf</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_string</span>(<span class="ident">s</span>: <span class="ident">String</span>) <span class="op">-></span> <span class="ident">Buf</span> {
<span class="ident">Buf</span> { <span class="ident">inner</span>: <span class="ident">s</span>.<span class="ident">into_bytes</span>() }
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_capacity</span>(<span class="ident">capacity</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">Buf</span> {
<span class="ident">Buf</span> {
<span class="ident">inner</span>: <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="ident">capacity</span>)
}
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">clear</span>()
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">capacity</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">usize</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">capacity</span>()
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">reserve</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">additional</span>: <span class="ident">usize</span>) {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">reserve</span>(<span class="ident">additional</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">reserve_exact</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">additional</span>: <span class="ident">usize</span>) {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">reserve_exact</span>(<span class="ident">additional</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">shrink_to_fit</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">shrink_to_fit</span>()
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">shrink_to</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">min_capacity</span>: <span class="ident">usize</span>) {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">shrink_to</span>(<span class="ident">min_capacity</span>)
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">as_slice</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Slice</span> {
<span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>) }
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_string</span>(<span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">Buf</span><span class="op">></span> {
<span class="ident">String</span>::<span class="ident">from_utf8</span>(<span class="self">self</span>.<span class="ident">inner</span>).<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">p</span><span class="op">|</span> <span class="ident">Buf</span> { <span class="ident">inner</span>: <span class="ident">p</span>.<span class="ident">into_bytes</span>() } )
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">push_slice</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">Slice</span>) {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&</span><span class="ident">s</span>.<span class="ident">inner</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_box</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span> {
<span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">into_boxed_slice</span>()) }
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_box</span>(<span class="ident">boxed</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Buf</span> {
<span class="kw">let</span> <span class="ident">inner</span>: <span class="ident">Box</span><span class="op"><</span>[<span class="ident">u8</span>]<span class="op">></span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="ident">boxed</span>) };
<span class="ident">Buf</span> { <span class="ident">inner</span>: <span class="ident">inner</span>.<span class="ident">into_vec</span>() }
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_arc</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">as_slice</span>().<span class="ident">into_arc</span>()
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_rc</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Rc</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">as_slice</span>().<span class="ident">into_rc</span>()
}
}
<span class="kw">impl</span> <span class="ident">Slice</span> {
<span class="kw">fn</span> <span class="ident">from_u8_slice</span>(<span class="ident">s</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Slice</span> {
<span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="ident">s</span>) }
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_str</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Slice</span> {
<span class="ident">Slice</span>::<span class="ident">from_u8_slice</span>(<span class="ident">s</span>.<span class="ident">as_bytes</span>())
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_str</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> {
<span class="ident">str</span>::<span class="ident">from_utf8</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>).<span class="ident">ok</span>()
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_string_lossy</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Cow</span><span class="op"><</span><span class="ident">str</span><span class="op">></span> {
<span class="ident">String</span>::<span class="ident">from_utf8_lossy</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>)
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_owned</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Buf</span> {
<span class="ident">Buf</span> { <span class="ident">inner</span>: <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">to_vec</span>() }
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_box</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">boxed</span>: <span class="ident">Box</span><span class="op"><</span>[<span class="ident">u8</span>]<span class="op">></span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">into</span>();
<span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="ident">boxed</span>) }
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">empty_box</span>() <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">boxed</span>: <span class="ident">Box</span><span class="op"><</span>[<span class="ident">u8</span>]<span class="op">></span> <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>();
<span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="ident">boxed</span>) }
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_arc</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">arc</span>: <span class="ident">Arc</span><span class="op"><</span>[<span class="ident">u8</span>]<span class="op">></span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">from</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>);
<span class="kw">unsafe</span> { <span class="ident">Arc</span>::<span class="ident">from_raw</span>(<span class="ident">Arc</span>::<span class="ident">into_raw</span>(<span class="ident">arc</span>) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">Slice</span>) }
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_rc</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Rc</span><span class="op"><</span><span class="ident">Slice</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">rc</span>: <span class="ident">Rc</span><span class="op"><</span>[<span class="ident">u8</span>]<span class="op">></span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">from</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>);
<span class="kw">unsafe</span> { <span class="ident">Rc</span>::<span class="ident">from_raw</span>(<span class="ident">Rc</span>::<span class="ident">into_raw</span>(<span class="ident">rc</span>) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">Slice</span>) }
}
}
</pre>
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