<!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/ffi/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="kw">use</span> <span class="ident">borrow</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">ops</span>;
<span class="kw">use</span> <span class="ident">cmp</span>;
<span class="kw">use</span> <span class="ident">hash</span>::{<span class="ident">Hash</span>, <span class="ident">Hasher</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</span>::<span class="ident">os_str</span>::{<span class="ident">Buf</span>, <span class="ident">Slice</span>};
<span class="kw">use</span> <span class="ident">sys_common</span>::{<span class="ident">AsInner</span>, <span class="ident">IntoInner</span>, <span class="ident">FromInner</span>};
<span class="doccomment">/// A type that can represent owned, mutable platform-native strings, but is</span>
<span class="doccomment">/// cheaply inter-convertible with Rust strings.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The need for this type arises from the fact that:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * On Unix systems, strings are often arbitrary sequences of non-zero</span>
<span class="doccomment">/// bytes, in many cases interpreted as UTF-8.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * On Windows, strings are often arbitrary sequences of non-zero 16-bit</span>
<span class="doccomment">/// values, interpreted as UTF-16 when it is valid to do so.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * In Rust, strings are always valid UTF-8, which may contain zeros.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// `OsString` and [`OsStr`] bridge this gap by simultaneously representing Rust</span>
<span class="doccomment">/// and platform-native string values, and in particular allowing a Rust string</span>
<span class="doccomment">/// to be converted into an "OS" string with no cost if possible.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// `OsString` is to [`&OsStr`] as [`String`] is to [`&str`]: the former</span>
<span class="doccomment">/// in each pair are owned strings; the latter are borrowed</span>
<span class="doccomment">/// references.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Creating an `OsString`</span>
<span class="doccomment">///</span>
<span class="doccomment">/// **From a Rust string**: `OsString` implements</span>
<span class="doccomment">/// [`From`]`<`[`String`]`>`, so you can use `my_string.from` to</span>
<span class="doccomment">/// create an `OsString` from a normal Rust string.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// **From slices:** Just like you can start with an empty Rust</span>
<span class="doccomment">/// [`String`] and then [`push_str`][String.push_str] `&str`</span>
<span class="doccomment">/// sub-string slices into it, you can create an empty `OsString` with</span>
<span class="doccomment">/// the [`new`] method and then push string slices into it with the</span>
<span class="doccomment">/// [`push`] method.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Extracting a borrowed reference to the whole OS string</span>
<span class="doccomment">///</span>
<span class="doccomment">/// You can use the [`as_os_str`] method to get an `&`[`OsStr`] from</span>
<span class="doccomment">/// an `OsString`; this is effectively a borrowed reference to the</span>
<span class="doccomment">/// whole string.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Conversions</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See the [module's toplevel documentation about conversions][conversions] for a discussion on</span>
<span class="doccomment">/// the traits which `OsString` implements for [conversions] from/to native representations.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`OsStr`]: struct.OsStr.html</span>
<span class="doccomment">/// [`&OsStr`]: struct.OsStr.html</span>
<span class="doccomment">/// [`From`]: ../convert/trait.From.html</span>
<span class="doccomment">/// [`String`]: ../string/struct.String.html</span>
<span class="doccomment">/// [`&str`]: ../primitive.str.html</span>
<span class="doccomment">/// [`u8`]: ../primitive.u8.html</span>
<span class="doccomment">/// [`u16`]: ../primitive.u16.html</span>
<span class="doccomment">/// [String.push_str]: ../string/struct.String.html#method.push_str</span>
<span class="doccomment">/// [`new`]: #method.new</span>
<span class="doccomment">/// [`push`]: #method.push</span>
<span class="doccomment">/// [`as_os_str`]: #method.as_os_str</span>
<span class="doccomment">/// [conversions]: index.html#conversions</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">OsString</span> {
<span class="ident">inner</span>: <span class="ident">Buf</span>
}
<span class="doccomment">/// Borrowed reference to an OS string (see [`OsString`]).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This type represents a borrowed reference to a string in the operating system's preferred</span>
<span class="doccomment">/// representation.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// `&OsStr` is to [`OsString`] as [`&str`] is to [`String`]: the former in each pair are borrowed</span>
<span class="doccomment">/// references; the latter are owned strings.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See the [module's toplevel documentation about conversions][conversions] for a discussion on</span>
<span class="doccomment">/// the traits which `OsStr` implements for [conversions] from/to native representations.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`OsString`]: struct.OsString.html</span>
<span class="doccomment">/// [`&str`]: ../primitive.str.html</span>
<span class="doccomment">/// [`String`]: ../string/struct.String.html</span>
<span class="doccomment">/// [conversions]: index.html#conversions</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">OsStr</span> {
<span class="ident">inner</span>: <span class="ident">Slice</span>
}
<span class="kw">impl</span> <span class="ident">OsString</span> {
<span class="doccomment">/// Constructs a new empty `OsString`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_string = OsString::new();</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">OsString</span> {
<span class="ident">OsString</span> { <span class="ident">inner</span>: <span class="ident">Buf</span>::<span class="ident">from_string</span>(<span class="ident">String</span>::<span class="ident">new</span>()) }
}
<span class="doccomment">/// Converts to an [`OsStr`] slice.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`OsStr`]: struct.OsStr.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::{OsString, OsStr};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_string = OsString::from("foo");</span>
<span class="doccomment">/// let os_str = OsStr::new("foo");</span>
<span class="doccomment">/// assert_eq!(os_string.as_os_str(), os_str);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">as_os_str</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="self">self</span>
}
<span class="doccomment">/// Converts the `OsString` into a [`String`] if it contains valid Unicode data.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// On failure, ownership of the original `OsString` is returned.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`String`]: ../../std/string/struct.String.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_string = OsString::from("foo");</span>
<span class="doccomment">/// let string = os_string.into_string();</span>
<span class="doccomment">/// assert_eq!(string, Ok(String::from("foo")));</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</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">OsString</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">into_string</span>().<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">buf</span><span class="op">|</span> <span class="ident">OsString</span> { <span class="ident">inner</span>: <span class="ident">buf</span>} )
}
<span class="doccomment">/// Extends the string with the given [`&OsStr`] slice.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`&OsStr`]: struct.OsStr.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut os_string = OsString::from("foo");</span>
<span class="doccomment">/// os_string.push("bar");</span>
<span class="doccomment">/// assert_eq!(&os_string, "foobar");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">push</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">s</span>: <span class="ident">T</span>) {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">push_slice</span>(<span class="kw-2">&</span><span class="ident">s</span>.<span class="ident">as_ref</span>().<span class="ident">inner</span>)
}
<span class="doccomment">/// Creates a new `OsString` with the given capacity.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The string will be able to hold exactly `capacity` length units of other</span>
<span class="doccomment">/// OS strings without reallocating. If `capacity` is 0, the string will not</span>
<span class="doccomment">/// allocate.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See main `OsString` documentation information about encoding.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut os_string = OsString::with_capacity(10);</span>
<span class="doccomment">/// let capacity = os_string.capacity();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // This push is done without reallocating</span>
<span class="doccomment">/// os_string.push("foo");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(capacity, os_string.capacity());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_simple_functions"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</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">OsString</span> {
<span class="ident">OsString</span> {
<span class="ident">inner</span>: <span class="ident">Buf</span>::<span class="ident">with_capacity</span>(<span class="ident">capacity</span>)
}
}
<span class="doccomment">/// Truncates the `OsString` to zero length.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut os_string = OsString::from("foo");</span>
<span class="doccomment">/// assert_eq!(&os_string, "foo");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// os_string.clear();</span>
<span class="doccomment">/// assert_eq!(&os_string, "");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_simple_functions"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</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="doccomment">/// Returns the capacity this `OsString` can hold without reallocating.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See `OsString` introduction for information about encoding.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut os_string = OsString::with_capacity(10);</span>
<span class="doccomment">/// assert!(os_string.capacity() >= 10);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_simple_functions"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</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="doccomment">/// Reserves capacity for at least `additional` more capacity to be inserted</span>
<span class="doccomment">/// in the given `OsString`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The collection may reserve more space to avoid frequent reallocations.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut s = OsString::new();</span>
<span class="doccomment">/// s.reserve(10);</span>
<span class="doccomment">/// assert!(s.capacity() >= 10);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_simple_functions"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</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="doccomment">/// Reserves the minimum capacity for exactly `additional` more capacity to</span>
<span class="doccomment">/// be inserted in the given `OsString`. Does nothing if the capacity is</span>
<span class="doccomment">/// already sufficient.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that the allocator may give the collection more space than it</span>
<span class="doccomment">/// requests. Therefore capacity can not be relied upon to be precisely</span>
<span class="doccomment">/// minimal. Prefer reserve if future insertions are expected.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut s = OsString::new();</span>
<span class="doccomment">/// s.reserve_exact(10);</span>
<span class="doccomment">/// assert!(s.capacity() >= 10);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_simple_functions"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</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="doccomment">/// Shrinks the capacity of the `OsString` to match its length.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut s = OsString::from("foo");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// s.reserve(100);</span>
<span class="doccomment">/// assert!(s.capacity() >= 100);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// s.shrink_to_fit();</span>
<span class="doccomment">/// assert_eq!(3, s.capacity());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_shrink_to_fit"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.19.0"</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="doccomment">/// Shrinks the capacity of the `OsString` with a lower bound.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The capacity will remain at least as large as both the length</span>
<span class="doccomment">/// and the supplied value.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Panics if the current capacity is smaller than the supplied</span>
<span class="doccomment">/// minimum capacity.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// #![feature(shrink_to)]</span>
<span class="doccomment">/// use std::ffi::OsString;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut s = OsString::from("foo");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// s.reserve(100);</span>
<span class="doccomment">/// assert!(s.capacity() >= 100);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// s.shrink_to(10);</span>
<span class="doccomment">/// assert!(s.capacity() >= 10);</span>
<span class="doccomment">/// s.shrink_to(0);</span>
<span class="doccomment">/// assert!(s.capacity() >= 3);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"shrink_to"</span>, <span class="ident">reason</span> <span class="op">=</span> <span class="string">"new API"</span>, <span class="ident">issue</span><span class="op">=</span><span class="string">"0"</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="doccomment">/// Converts this `OsString` into a boxed [`OsStr`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`OsStr`]: struct.OsStr.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::{OsString, OsStr};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let s = OsString::from("hello");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let b: Box<OsStr> = s.into_boxed_os_str();</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"into_boxed_os_str"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.20.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_boxed_os_str</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">rw</span> <span class="op">=</span> <span class="ident">Box</span>::<span class="ident">into_raw</span>(<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">into_box</span>()) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">OsStr</span>;
<span class="kw">unsafe</span> { <span class="ident">Box</span>::<span class="ident">from_raw</span>(<span class="ident">rw</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="ident">String</span>) <span class="op">-></span> <span class="ident">OsString</span> {
<span class="ident">OsString</span> { <span class="ident">inner</span>: <span class="ident">Buf</span>::<span class="ident">from_string</span>(<span class="ident">s</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">>></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">T</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">T</span>) <span class="op">-></span> <span class="ident">OsString</span> {
<span class="ident">s</span>.<span class="ident">as_ref</span>().<span class="ident">to_os_string</span>()
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">ops</span>::<span class="ident">Index</span><span class="op"><</span><span class="ident">ops</span>::<span class="ident">RangeFull</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="ident">OsStr</span>;
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">index</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">_index</span>: <span class="ident">ops</span>::<span class="ident">RangeFull</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="ident">OsStr</span>::<span class="ident">from_inner</span>(<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_slice</span>())
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">ops</span>::<span class="ident">Deref</span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">type</span> <span class="ident">Target</span> <span class="op">=</span> <span class="ident">OsStr</span>;
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">deref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="kw-2">&</span><span class="self">self</span>[..]
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_default"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="doccomment">/// Constructs an empty `OsString`.</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">OsString</span> {
<span class="ident">OsString</span>::<span class="ident">new</span>()
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">OsString</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="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>, <span class="ident">formatter</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialEq</span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span> <span class="op">==</span> <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span>
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialEq</span><span class="op"><</span><span class="ident">str</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span> <span class="op">==</span> <span class="ident">other</span>
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialEq</span><span class="op"><</span><span class="ident">OsString</span><span class="op">></span> <span class="kw">for</span> <span class="ident">str</span> {
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span> <span class="op">==</span> <span class="self">self</span>
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Eq</span> <span class="kw">for</span> <span class="ident">OsString</span> {}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialOrd</span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">cmp</span>::<span class="ident">Ordering</span><span class="op">></span> {
(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">lt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span> <span class="op"><</span> <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span> }
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">le</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span> <span class="op"><=</span> <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span> }
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">gt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span> <span class="op">></span> <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span> }
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">ge</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span> <span class="op">>=</span> <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span> }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialOrd</span><span class="op"><</span><span class="ident">str</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">cmp</span>::<span class="ident">Ordering</span><span class="op">></span> {
(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">partial_cmp</span>(<span class="ident">other</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Ord</span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">cmp</span>::<span class="ident">Ordering</span> {
(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">cmp</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">other</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Hash</span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">hash</span><span class="op"><</span><span class="ident">H</span>: <span class="ident">Hasher</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">state</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">H</span>) {
(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">hash</span>(<span class="ident">state</span>)
}
}
<span class="kw">impl</span> <span class="ident">OsStr</span> {
<span class="doccomment">/// Coerces into an `OsStr` slice.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsStr;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("foo");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="op">+</span> <span class="question-mark">?</span><span class="ident">Sized</span><span class="op">></span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">S</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="ident">s</span>.<span class="ident">as_ref</span>()
}
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">inner</span>: <span class="kw-2">&</span><span class="ident">Slice</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="kw">unsafe</span> { <span class="kw-2">&</span><span class="kw-2">*</span>(<span class="ident">inner</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">Slice</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">OsStr</span>) }
}
<span class="doccomment">/// Yields a [`&str`] slice if the `OsStr` is valid Unicode.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This conversion may entail doing a check for UTF-8 validity.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`&str`]: ../../std/primitive.str.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsStr;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("foo");</span>
<span class="doccomment">/// assert_eq!(os_str.to_str(), Some("foo"));</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</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="self">self</span>.<span class="ident">inner</span>.<span class="ident">to_str</span>()
}
<span class="doccomment">/// Converts an `OsStr` to a [`Cow`]`<`[`str`]`>`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Any non-Unicode sequences are replaced with U+FFFD REPLACEMENT CHARACTER.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Cow`]: ../../std/borrow/enum.Cow.html</span>
<span class="doccomment">/// [`str`]: ../../std/primitive.str.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Calling `to_string_lossy` on an `OsStr` with valid unicode:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsStr;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("foo");</span>
<span class="doccomment">/// assert_eq!(os_str.to_string_lossy(), "foo");</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Had `os_str` contained invalid unicode, the `to_string_lossy` call might</span>
<span class="doccomment">/// have returned `"fo�"`.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</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="self">self</span>.<span class="ident">inner</span>.<span class="ident">to_string_lossy</span>()
}
<span class="doccomment">/// Copies the slice into an owned [`OsString`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`OsString`]: struct.OsString.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::{OsStr, OsString};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("foo");</span>
<span class="doccomment">/// let os_string = os_str.to_os_string();</span>
<span class="doccomment">/// assert_eq!(os_string, OsString::from("foo"));</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_os_string</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">OsString</span> {
<span class="ident">OsString</span> { <span class="ident">inner</span>: <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">to_owned</span>() }
}
<span class="doccomment">/// Checks whether the `OsStr` is empty.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsStr;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("");</span>
<span class="doccomment">/// assert!(os_str.is_empty());</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("foo");</span>
<span class="doccomment">/// assert!(!os_str.is_empty());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_simple_functions"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_empty</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">inner</span>.<span class="ident">is_empty</span>()
}
<span class="doccomment">/// Returns the length of this `OsStr`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that this does **not** return the number of bytes in this string</span>
<span class="doccomment">/// as, for example, OS strings on Windows are encoded as a list of [`u16`]</span>
<span class="doccomment">/// rather than a list of bytes. This number is simply useful for passing to</span>
<span class="doccomment">/// other methods like [`OsString::with_capacity`] to avoid reallocations.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See `OsStr` introduction for more information about encoding.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`u16`]: ../primitive.u16.html</span>
<span class="doccomment">/// [`OsString::with_capacity`]: struct.OsString.html#method.with_capacity</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::ffi::OsStr;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("");</span>
<span class="doccomment">/// assert_eq!(os_str.len(), 0);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let os_str = OsStr::new("foo");</span>
<span class="doccomment">/// assert_eq!(os_str.len(), 3);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_simple_functions"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">len</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">inner</span>.<span class="ident">len</span>()
}
<span class="doccomment">/// Converts a [`Box`]`<OsStr>` into an [`OsString`] without copying or allocating.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Box`]: ../boxed/struct.Box.html</span>
<span class="doccomment">/// [`OsString`]: struct.OsString.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"into_boxed_os_str"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.20.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_os_string</span>(<span class="self">self</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span>) <span class="op">-></span> <span class="ident">OsString</span> {
<span class="kw">let</span> <span class="ident">boxed</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">Box</span>::<span class="ident">from_raw</span>(<span class="ident">Box</span>::<span class="ident">into_raw</span>(<span class="self">self</span>) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">Slice</span>) };
<span class="ident">OsString</span> { <span class="ident">inner</span>: <span class="ident">Buf</span>::<span class="ident">from_box</span>(<span class="ident">boxed</span>) }
}
<span class="doccomment">/// Gets the underlying byte representation.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note: it is *crucial* that this API is private, to avoid</span>
<span class="doccomment">/// revealing the internal, platform-specific encodings.</span>
<span class="kw">fn</span> <span class="ident">bytes</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">unsafe</span> { <span class="kw-2">&</span><span class="kw-2">*</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> [<span class="ident">u8</span>]) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"box_from_os_str"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.17.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">rw</span> <span class="op">=</span> <span class="ident">Box</span>::<span class="ident">into_raw</span>(<span class="ident">s</span>.<span class="ident">inner</span>.<span class="ident">into_box</span>()) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">OsStr</span>;
<span class="kw">unsafe</span> { <span class="ident">Box</span>::<span class="ident">from_raw</span>(<span class="ident">rw</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"os_string_from_box"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.18.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">>></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">boxed</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span>) <span class="op">-></span> <span class="ident">OsString</span> {
<span class="ident">boxed</span>.<span class="ident">into_os_string</span>()
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"box_from_os_string"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.20.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">OsString</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="ident">s</span>.<span class="ident">into_boxed_os_str</span>()
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"shared_from_slice2"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.24.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">OsString</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">arc</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">inner</span>.<span class="ident">into_arc</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">OsStr</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"shared_from_slice2"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.24.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">arc</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">inner</span>.<span class="ident">into_arc</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">OsStr</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"shared_from_slice2"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.24.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">OsString</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Rc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">Rc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">rc</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">inner</span>.<span class="ident">into_rc</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">OsStr</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"shared_from_slice2"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.24.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Rc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">Rc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">rc</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">inner</span>.<span class="ident">into_rc</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">OsStr</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cow_from_osstr"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.28.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="ident">OsString</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span> {
<span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="ident">s</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cow_from_osstr"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.28.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span> {
<span class="ident">Cow</span>::<span class="ident">Borrowed</span>(<span class="ident">s</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cow_from_osstr"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.28.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsString</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsString</span>) <span class="op">-></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span> {
<span class="ident">Cow</span>::<span class="ident">Borrowed</span>(<span class="ident">s</span>.<span class="ident">as_os_str</span>())
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_from_cow_osstr"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.28.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">>></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">s</span>: <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span>) <span class="op">-></span> <span class="self">Self</span> {
<span class="ident">s</span>.<span class="ident">into_owned</span>()
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"box_default_extra"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.17.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">rw</span> <span class="op">=</span> <span class="ident">Box</span>::<span class="ident">into_raw</span>(<span class="ident">Slice</span>::<span class="ident">empty_box</span>()) <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">OsStr</span>;
<span class="kw">unsafe</span> { <span class="ident">Box</span>::<span class="ident">from_raw</span>(<span class="ident">rw</span>) }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"osstring_default"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Default</span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span> {
<span class="doccomment">/// Creates an empty `OsStr`.</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span> {
<span class="ident">OsStr</span>::<span class="ident">new</span>(<span class="string">""</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialEq</span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">eq</span>(<span class="ident">other</span>.<span class="ident">bytes</span>())
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialEq</span><span class="op"><</span><span class="ident">str</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="kw-2">*</span><span class="self">self</span> <span class="op">==</span> <span class="kw-2">*</span><span class="ident">OsStr</span>::<span class="ident">new</span>(<span class="ident">other</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialEq</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">str</span> {
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="kw-2">*</span><span class="ident">other</span> <span class="op">==</span> <span class="kw-2">*</span><span class="ident">OsStr</span>::<span class="ident">new</span>(<span class="self">self</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Eq</span> <span class="kw">for</span> <span class="ident">OsStr</span> {}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialOrd</span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">cmp</span>::<span class="ident">Ordering</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">partial_cmp</span>(<span class="ident">other</span>.<span class="ident">bytes</span>())
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">lt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">lt</span>(<span class="ident">other</span>.<span class="ident">bytes</span>()) }
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">le</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">le</span>(<span class="ident">other</span>.<span class="ident">bytes</span>()) }
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">gt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">gt</span>(<span class="ident">other</span>.<span class="ident">bytes</span>()) }
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">ge</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">ge</span>(<span class="ident">other</span>.<span class="ident">bytes</span>()) }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">PartialOrd</span><span class="op"><</span><span class="ident">str</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">cmp</span>::<span class="ident">Ordering</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">partial_cmp</span>(<span class="ident">OsStr</span>::<span class="ident">new</span>(<span class="ident">other</span>))
}
}
<span class="comment">// FIXME (#19470): cannot provide PartialOrd<OsStr> for str until we</span>
<span class="comment">// have more flexible coherence rules.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Ord</span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="ident">OsStr</span>) <span class="op">-></span> <span class="ident">cmp</span>::<span class="ident">Ordering</span> { <span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">cmp</span>(<span class="ident">other</span>.<span class="ident">bytes</span>()) }
}
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">impl_cmp</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">lhs</span>:<span class="ident">ty</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">rhs</span>: <span class="ident">ty</span>) <span class="op">=></span> {
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cmp_os_str"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.8.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="lifetime">'b</span><span class="op">></span> <span class="ident">PartialEq</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">rhs</span><span class="op">></span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">lhs</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">rhs</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="op"><</span><span class="ident">OsStr</span> <span class="kw">as</span> <span class="ident">PartialEq</span><span class="op">></span>::<span class="ident">eq</span>(<span class="self">self</span>, <span class="ident">other</span>) }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cmp_os_str"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.8.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="lifetime">'b</span><span class="op">></span> <span class="ident">PartialEq</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">lhs</span><span class="op">></span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">rhs</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">lhs</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="op"><</span><span class="ident">OsStr</span> <span class="kw">as</span> <span class="ident">PartialEq</span><span class="op">></span>::<span class="ident">eq</span>(<span class="self">self</span>, <span class="ident">other</span>) }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cmp_os_str"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.8.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="lifetime">'b</span><span class="op">></span> <span class="ident">PartialOrd</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">rhs</span><span class="op">></span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">lhs</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">rhs</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">cmp</span>::<span class="ident">Ordering</span><span class="op">></span> {
<span class="op"><</span><span class="ident">OsStr</span> <span class="kw">as</span> <span class="ident">PartialOrd</span><span class="op">></span>::<span class="ident">partial_cmp</span>(<span class="self">self</span>, <span class="ident">other</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cmp_os_str"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.8.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="lifetime">'b</span><span class="op">></span> <span class="ident">PartialOrd</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">lhs</span><span class="op">></span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">rhs</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">partial_cmp</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">lhs</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">cmp</span>::<span class="ident">Ordering</span><span class="op">></span> {
<span class="op"><</span><span class="ident">OsStr</span> <span class="kw">as</span> <span class="ident">PartialOrd</span><span class="op">></span>::<span class="ident">partial_cmp</span>(<span class="self">self</span>, <span class="ident">other</span>)
}
}
}
}
<span class="macro">impl_cmp</span><span class="macro">!</span>(<span class="ident">OsString</span>, <span class="ident">OsStr</span>);
<span class="macro">impl_cmp</span><span class="macro">!</span>(<span class="ident">OsString</span>, <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">OsStr</span>);
<span class="macro">impl_cmp</span><span class="macro">!</span>(<span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span>, <span class="ident">OsStr</span>);
<span class="macro">impl_cmp</span><span class="macro">!</span>(<span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span>, <span class="kw-2">&</span><span class="lifetime">'b</span> <span class="ident">OsStr</span>);
<span class="macro">impl_cmp</span><span class="macro">!</span>(<span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">OsStr</span><span class="op">></span>, <span class="ident">OsString</span>);
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Hash</span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">hash</span><span class="op"><</span><span class="ident">H</span>: <span class="ident">Hasher</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">state</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">H</span>) {
<span class="self">self</span>.<span class="ident">bytes</span>().<span class="ident">hash</span>(<span class="ident">state</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">OsStr</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="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">OsStr</span> {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">display</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="self">self</span>.<span class="ident">inner</span>, <span class="ident">formatter</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Borrow</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">borrow</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> { <span class="kw-2">&</span><span class="self">self</span>[..] }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">ToOwned</span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="kw">type</span> <span class="ident">Owned</span> <span class="op">=</span> <span class="ident">OsString</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">OsString</span> {
<span class="self">self</span>.<span class="ident">to_os_string</span>()
}
<span class="kw">fn</span> <span class="ident">clone_into</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">target</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">OsString</span>) {
<span class="ident">target</span>.<span class="ident">clear</span>();
<span class="ident">target</span>.<span class="ident">push</span>(<span class="self">self</span>);
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsStr</span> {
<span class="kw">fn</span> <span class="ident">as_ref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="self">self</span>
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">as_ref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="self">self</span>
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">str</span> {
<span class="kw">fn</span> <span class="ident">as_ref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
<span class="ident">OsStr</span>::<span class="ident">from_inner</span>(<span class="ident">Slice</span>::<span class="ident">from_str</span>(<span class="self">self</span>))
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">String</span> {
<span class="kw">fn</span> <span class="ident">as_ref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">OsStr</span> {
(<span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">as_ref</span>()
}
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">Buf</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">buf</span>: <span class="ident">Buf</span>) <span class="op">-></span> <span class="ident">OsString</span> {
<span class="ident">OsString</span> { <span class="ident">inner</span>: <span class="ident">buf</span> }
}
}
<span class="kw">impl</span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">Buf</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsString</span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Buf</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">Slice</span><span class="op">></span> <span class="kw">for</span> <span class="ident">OsStr</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">Slice</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</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="kw-2">*</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">rc</span>::<span class="ident">Rc</span>;
<span class="kw">use</span> <span class="ident">sync</span>::<span class="ident">Arc</span>;
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_string_with_capacity</span>() {
<span class="kw">let</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">with_capacity</span>(<span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">os_string</span>.<span class="ident">inner</span>.<span class="ident">into_inner</span>().<span class="ident">capacity</span>());
<span class="kw">let</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">10</span>, <span class="ident">os_string</span>.<span class="ident">inner</span>.<span class="ident">into_inner</span>().<span class="ident">capacity</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">with_capacity</span>(<span class="number">0</span>);
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"abc"</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">inner</span>.<span class="ident">into_inner</span>().<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">3</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_string_clear</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">from</span>(<span class="string">"abc"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">3</span>, <span class="ident">os_string</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>().<span class="ident">len</span>());
<span class="ident">os_string</span>.<span class="ident">clear</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="ident">os_string</span>, <span class="string">""</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">os_string</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>().<span class="ident">len</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_string_capacity</span>() {
<span class="kw">let</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">with_capacity</span>(<span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">os_string</span>.<span class="ident">capacity</span>());
<span class="kw">let</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">10</span>, <span class="ident">os_string</span>.<span class="ident">capacity</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">with_capacity</span>(<span class="number">0</span>);
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"abc"</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">3</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_string_reserve</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">new</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>(), <span class="number">0</span>);
<span class="ident">os_string</span>.<span class="ident">reserve</span>(<span class="number">2</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">2</span>);
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">16</span> {
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"a"</span>);
}
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">16</span>);
<span class="ident">os_string</span>.<span class="ident">reserve</span>(<span class="number">16</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">32</span>);
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"a"</span>);
<span class="ident">os_string</span>.<span class="ident">reserve</span>(<span class="number">16</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">33</span>)
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_string_reserve_exact</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">new</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>(), <span class="number">0</span>);
<span class="ident">os_string</span>.<span class="ident">reserve_exact</span>(<span class="number">2</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">2</span>);
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">16</span> {
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"a"</span>);
}
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">16</span>);
<span class="ident">os_string</span>.<span class="ident">reserve_exact</span>(<span class="number">16</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">32</span>);
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"a"</span>);
<span class="ident">os_string</span>.<span class="ident">reserve_exact</span>(<span class="number">16</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">33</span>)
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_string_default</span>() {
<span class="kw">let</span> <span class="ident">os_string</span>: <span class="ident">OsString</span> <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">""</span>, <span class="kw-2">&</span><span class="ident">os_string</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_str_is_empty</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">new</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">is_empty</span>());
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"abc"</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">os_string</span>.<span class="ident">is_empty</span>());
<span class="ident">os_string</span>.<span class="ident">clear</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">is_empty</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_str_len</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">new</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">os_string</span>.<span class="ident">len</span>());
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"abc"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">3</span>, <span class="ident">os_string</span>.<span class="ident">len</span>());
<span class="ident">os_string</span>.<span class="ident">clear</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">os_string</span>.<span class="ident">len</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_str_default</span>() {
<span class="kw">let</span> <span class="ident">os_str</span>: <span class="kw-2">&</span><span class="ident">OsStr</span> <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">""</span>, <span class="ident">os_str</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">into_boxed</span>() {
<span class="kw">let</span> <span class="ident">orig</span> <span class="op">=</span> <span class="string">"Hello, world!"</span>;
<span class="kw">let</span> <span class="ident">os_str</span> <span class="op">=</span> <span class="ident">OsStr</span>::<span class="ident">new</span>(<span class="ident">orig</span>);
<span class="kw">let</span> <span class="ident">boxed</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="op">=</span> <span class="ident">Box</span>::<span class="ident">from</span>(<span class="ident">os_str</span>);
<span class="kw">let</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">os_str</span>.<span class="ident">to_owned</span>().<span class="ident">into_boxed_os_str</span>().<span class="ident">into_os_string</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">os_str</span>, <span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">boxed</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">boxed</span>, <span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">os_string</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">os_string</span>, <span class="ident">os_str</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">boxed_default</span>() {
<span class="kw">let</span> <span class="ident">boxed</span> <span class="op">=</span> <span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">>></span>::<span class="ident">default</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">boxed</span>.<span class="ident">is_empty</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_os_str_clone_into</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">os_string</span> <span class="op">=</span> <span class="ident">OsString</span>::<span class="ident">with_capacity</span>(<span class="number">123</span>);
<span class="ident">os_string</span>.<span class="ident">push</span>(<span class="string">"hello"</span>);
<span class="kw">let</span> <span class="ident">os_str</span> <span class="op">=</span> <span class="ident">OsStr</span>::<span class="ident">new</span>(<span class="string">"bonjour"</span>);
<span class="ident">os_str</span>.<span class="ident">clone_into</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">os_string</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">os_str</span>, <span class="ident">os_string</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">os_string</span>.<span class="ident">capacity</span>() <span class="op">>=</span> <span class="number">123</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">into_rc</span>() {
<span class="kw">let</span> <span class="ident">orig</span> <span class="op">=</span> <span class="string">"Hello, world!"</span>;
<span class="kw">let</span> <span class="ident">os_str</span> <span class="op">=</span> <span class="ident">OsStr</span>::<span class="ident">new</span>(<span class="ident">orig</span>);
<span class="kw">let</span> <span class="ident">rc</span>: <span class="ident">Rc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">from</span>(<span class="ident">os_str</span>);
<span class="kw">let</span> <span class="ident">arc</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">from</span>(<span class="ident">os_str</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">rc</span>, <span class="ident">os_str</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">arc</span>, <span class="ident">os_str</span>);
<span class="kw">let</span> <span class="ident">rc2</span>: <span class="ident">Rc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="op">=</span> <span class="ident">Rc</span>::<span class="ident">from</span>(<span class="ident">os_str</span>.<span class="ident">to_owned</span>());
<span class="kw">let</span> <span class="ident">arc2</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">from</span>(<span class="ident">os_str</span>.<span class="ident">to_owned</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">rc2</span>, <span class="ident">os_str</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">arc2</span>, <span class="ident">os_str</span>);
}
}
</pre>
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