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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source to the Rust file `src/libstd/sys_common/fs.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>fs.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../../normalize1.35.0.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc1.35.0.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark1.35.0.css"><link rel="stylesheet" type="text/css" href="../../../light1.35.0.css" id="themeStyle"><script src="../../../storage1.35.0.js"></script><noscript><link rel="stylesheet" href="../../../noscript1.35.0.css"></noscript><link rel="shortcut icon" href="../../../favicon1.35.0.ico"><style type="text/css">#crate-search{background-image:url("../../../down-arrow1.35.0.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../../../std/index.html'><img src='../../../rust-logo1.35.0.png' alt='logo' width='100'></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush1.35.0.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme1.35.0.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel1.35.0.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><div class="example-wrap"><pre class="rust ">
<span class="attribute">#![<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span> <span class="comment">// not used on all platforms</span>

<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">path</span>::<span class="ident">Path</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">io</span>::{<span class="self">self</span>, <span class="ident">Error</span>, <span class="ident">ErrorKind</span>};

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">copy</span>(<span class="ident">from</span>: <span class="kw-2">&amp;</span><span class="ident">Path</span>, <span class="ident">to</span>: <span class="kw-2">&amp;</span><span class="ident">Path</span>) <span class="op">-&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">u64</span><span class="op">&gt;</span> {
    <span class="kw">if</span> <span class="op">!</span><span class="ident">from</span>.<span class="ident">is_file</span>() {
        <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">Error</span>::<span class="ident">new</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>,
                              <span class="string">&quot;the source path is not an existing regular file&quot;</span>))
    }

    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">reader</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">File</span>::<span class="ident">open</span>(<span class="ident">from</span>)<span class="question-mark">?</span>;
    <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">writer</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">File</span>::<span class="ident">create</span>(<span class="ident">to</span>)<span class="question-mark">?</span>;
    <span class="kw">let</span> <span class="ident">perm</span> <span class="op">=</span> <span class="ident">reader</span>.<span class="ident">metadata</span>()<span class="question-mark">?</span>.<span class="ident">permissions</span>();

    <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="ident">io</span>::<span class="ident">copy</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">reader</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">writer</span>)<span class="question-mark">?</span>;
    <span class="ident">fs</span>::<span class="ident">set_permissions</span>(<span class="ident">to</span>, <span class="ident">perm</span>)<span class="question-mark">?</span>;
    <span class="prelude-val">Ok</span>(<span class="ident">ret</span>)
}

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">remove_dir_all</span>(<span class="ident">path</span>: <span class="kw-2">&amp;</span><span class="ident">Path</span>) <span class="op">-&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span>()<span class="op">&gt;</span> {
    <span class="kw">let</span> <span class="ident">filetype</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">symlink_metadata</span>(<span class="ident">path</span>)<span class="question-mark">?</span>.<span class="ident">file_type</span>();
    <span class="kw">if</span> <span class="ident">filetype</span>.<span class="ident">is_symlink</span>() {
        <span class="ident">fs</span>::<span class="ident">remove_file</span>(<span class="ident">path</span>)
    } <span class="kw">else</span> {
        <span class="ident">remove_dir_all_recursive</span>(<span class="ident">path</span>)
    }
}

<span class="kw">fn</span> <span class="ident">remove_dir_all_recursive</span>(<span class="ident">path</span>: <span class="kw-2">&amp;</span><span class="ident">Path</span>) <span class="op">-&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span>()<span class="op">&gt;</span> {
    <span class="kw">for</span> <span class="ident">child</span> <span class="kw">in</span> <span class="ident">fs</span>::<span class="ident">read_dir</span>(<span class="ident">path</span>)<span class="question-mark">?</span> {
        <span class="kw">let</span> <span class="ident">child</span> <span class="op">=</span> <span class="ident">child</span><span class="question-mark">?</span>;
        <span class="kw">if</span> <span class="ident">child</span>.<span class="ident">file_type</span>()<span class="question-mark">?</span>.<span class="ident">is_dir</span>() {
            <span class="ident">remove_dir_all_recursive</span>(<span class="kw-2">&amp;</span><span class="ident">child</span>.<span class="ident">path</span>())<span class="question-mark">?</span>;
        } <span class="kw">else</span> {
            <span class="ident">fs</span>::<span class="ident">remove_file</span>(<span class="kw-2">&amp;</span><span class="ident">child</span>.<span class="ident">path</span>())<span class="question-mark">?</span>;
        }
    }
    <span class="ident">fs</span>::<span class="ident">remove_dir</span>(<span class="ident">path</span>)
}
</pre></div>
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