| <!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 of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/http-0.2.9/src/uri/scheme.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>scheme.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../http/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../http/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| <span id="335">335</span> |
| <span id="336">336</span> |
| <span id="337">337</span> |
| <span id="338">338</span> |
| <span id="339">339</span> |
| <span id="340">340</span> |
| <span id="341">341</span> |
| <span id="342">342</span> |
| <span id="343">343</span> |
| <span id="344">344</span> |
| <span id="345">345</span> |
| <span id="346">346</span> |
| <span id="347">347</span> |
| <span id="348">348</span> |
| <span id="349">349</span> |
| <span id="350">350</span> |
| <span id="351">351</span> |
| <span id="352">352</span> |
| <span id="353">353</span> |
| <span id="354">354</span> |
| <span id="355">355</span> |
| <span id="356">356</span> |
| <span id="357">357</span> |
| <span id="358">358</span> |
| <span id="359">359</span> |
| <span id="360">360</span> |
| <span id="361">361</span> |
| <span id="362">362</span> |
| <span id="363">363</span> |
| </pre><pre class="rust"><code><span class="kw">use </span>std::convert::TryFrom; |
| <span class="kw">use </span>std::fmt; |
| <span class="kw">use </span>std::hash::{Hash, Hasher}; |
| <span class="kw">use </span>std::str::FromStr; |
| |
| <span class="kw">use </span>bytes::Bytes; |
| |
| <span class="kw">use super</span>::{ErrorKind, InvalidUri}; |
| <span class="kw">use </span><span class="kw">crate</span>::byte_str::ByteStr; |
| |
| <span class="doccomment">/// Represents the scheme component of a URI |
| </span><span class="attribute">#[derive(Clone)] |
| </span><span class="kw">pub struct </span>Scheme { |
| <span class="kw">pub</span>(<span class="kw">super</span>) inner: Scheme2, |
| } |
| |
| <span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">enum </span>Scheme2<T = Box<ByteStr>> { |
| <span class="prelude-val">None</span>, |
| Standard(Protocol), |
| Other(T), |
| } |
| |
| <span class="attribute">#[derive(Copy, Clone, Debug)] |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">enum </span>Protocol { |
| Http, |
| Https, |
| } |
| |
| <span class="kw">impl </span>Scheme { |
| <span class="doccomment">/// HTTP protocol scheme |
| </span><span class="kw">pub const </span>HTTP: Scheme = Scheme { |
| inner: Scheme2::Standard(Protocol::Http), |
| }; |
| |
| <span class="doccomment">/// HTTP protocol over TLS. |
| </span><span class="kw">pub const </span>HTTPS: Scheme = Scheme { |
| inner: Scheme2::Standard(Protocol::Https), |
| }; |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>empty() -> <span class="self">Self </span>{ |
| Scheme { |
| inner: Scheme2::None, |
| } |
| } |
| |
| <span class="doccomment">/// Return a str representation of the scheme |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::uri::*; |
| /// let scheme: Scheme = "http".parse().unwrap(); |
| /// assert_eq!(scheme.as_str(), "http"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="kw">use </span><span class="self">self</span>::Protocol::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="self">self</span>::Scheme2::<span class="kw-2">*</span>; |
| |
| <span class="kw">match </span><span class="self">self</span>.inner { |
| Standard(Http) => <span class="string">"http"</span>, |
| Standard(Https) => <span class="string">"https"</span>, |
| Other(<span class="kw-2">ref </span>v) => <span class="kw-2">&</span>v[..], |
| <span class="prelude-val">None </span>=> <span class="macro">unreachable!</span>(), |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> TryFrom<<span class="kw-2">&</span><span class="lifetime">'a </span>[u8]> <span class="kw">for </span>Scheme { |
| <span class="kw">type </span>Error = InvalidUri; |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>try_from(s: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| <span class="kw">use </span><span class="self">self</span>::Scheme2::<span class="kw-2">*</span>; |
| |
| <span class="kw">match </span>Scheme2::parse_exact(s)<span class="question-mark">? </span>{ |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Err</span>(ErrorKind::InvalidScheme.into()), |
| Standard(p) => <span class="prelude-val">Ok</span>(Standard(p).into()), |
| Other(<span class="kw">_</span>) => { |
| <span class="kw">let </span>bytes = Bytes::copy_from_slice(s); |
| |
| <span class="comment">// Safety: postcondition on parse_exact() means that s and |
| // hence bytes are valid UTF-8. |
| </span><span class="kw">let </span>string = <span class="kw">unsafe </span>{ ByteStr::from_utf8_unchecked(bytes) }; |
| |
| <span class="prelude-val">Ok</span>(Other(Box::new(string)).into()) |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> TryFrom<<span class="kw-2">&</span><span class="lifetime">'a </span>str> <span class="kw">for </span>Scheme { |
| <span class="kw">type </span>Error = InvalidUri; |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>try_from(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| TryFrom::try_from(s.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl </span>FromStr <span class="kw">for </span>Scheme { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= InvalidUri; |
| |
| <span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Err> { |
| TryFrom::try_from(s) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Scheme { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| fmt::Debug::fmt(<span class="self">self</span>.as_str(), f) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>Scheme { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.write_str(<span class="self">self</span>.as_str()) |
| } |
| } |
| |
| <span class="kw">impl </span>AsRef<str> <span class="kw">for </span>Scheme { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="self">self</span>.as_str() |
| } |
| } |
| |
| <span class="kw">impl </span>PartialEq <span class="kw">for </span>Scheme { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>Scheme) -> bool { |
| <span class="kw">use </span><span class="self">self</span>::Protocol::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="self">self</span>::Scheme2::<span class="kw-2">*</span>; |
| |
| <span class="kw">match </span>(<span class="kw-2">&</span><span class="self">self</span>.inner, <span class="kw-2">&</span>other.inner) { |
| (<span class="kw-2">&</span>Standard(Http), <span class="kw-2">&</span>Standard(Http)) => <span class="bool-val">true</span>, |
| (<span class="kw-2">&</span>Standard(Https), <span class="kw-2">&</span>Standard(Https)) => <span class="bool-val">true</span>, |
| (<span class="kw-2">&</span>Other(<span class="kw-2">ref </span>a), <span class="kw-2">&</span>Other(<span class="kw-2">ref </span>b)) => a.eq_ignore_ascii_case(b), |
| (<span class="kw-2">&</span><span class="prelude-val">None</span>, <span class="kw">_</span>) | (<span class="kw">_</span>, <span class="kw-2">&</span><span class="prelude-val">None</span>) => <span class="macro">unreachable!</span>(), |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>Eq <span class="kw">for </span>Scheme {} |
| |
| <span class="doccomment">/// Case-insensitive equality |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::uri::Scheme; |
| /// let scheme: Scheme = "HTTP".parse().unwrap(); |
| /// assert_eq!(scheme, *"http"); |
| /// ``` |
| </span><span class="kw">impl </span>PartialEq<str> <span class="kw">for </span>Scheme { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>str) -> bool { |
| <span class="self">self</span>.as_str().eq_ignore_ascii_case(other) |
| } |
| } |
| |
| <span class="doccomment">/// Case-insensitive equality |
| </span><span class="kw">impl </span>PartialEq<Scheme> <span class="kw">for </span>str { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>Scheme) -> bool { |
| other == <span class="self">self |
| </span>} |
| } |
| |
| <span class="doccomment">/// Case-insensitive hashing |
| </span><span class="kw">impl </span>Hash <span class="kw">for </span>Scheme { |
| <span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H) |
| <span class="kw">where |
| </span>H: Hasher, |
| { |
| <span class="kw">match </span><span class="self">self</span>.inner { |
| Scheme2::None => (), |
| Scheme2::Standard(Protocol::Http) => state.write_u8(<span class="number">1</span>), |
| Scheme2::Standard(Protocol::Https) => state.write_u8(<span class="number">2</span>), |
| Scheme2::Other(<span class="kw-2">ref </span>other) => { |
| other.len().hash(state); |
| <span class="kw">for </span><span class="kw-2">&</span>b <span class="kw">in </span>other.as_bytes() { |
| state.write_u8(b.to_ascii_lowercase()); |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><T> Scheme2<T> { |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>is_none(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Scheme2::None => <span class="bool-val">true</span>, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="comment">// Require the scheme to not be too long in order to enable further |
| // optimizations later. |
| </span><span class="kw">const </span>MAX_SCHEME_LEN: usize = <span class="number">64</span>; |
| |
| <span class="comment">// scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) |
| // |
| // SCHEME_CHARS is a table of valid characters in the scheme part of a URI. An |
| // entry in the table is 0 for invalid characters. For valid characters the |
| // entry is itself (i.e. the entry for 43 is b'+' because b'+' == 43u8). An |
| // important characteristic of this table is that all entries above 127 are |
| // invalid. This makes all of the valid entries a valid single-byte UTF-8 code |
| // point. This means that a slice of such valid entries is valid UTF-8. |
| </span><span class="kw">const </span>SCHEME_CHARS: [u8; <span class="number">256</span>] = [ |
| <span class="comment">// 0 1 2 3 4 5 6 7 8 9 |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 1x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 2x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 3x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="string">b'+'</span>, <span class="number">0</span>, <span class="string">b'-'</span>, <span class="string">b'.'</span>, <span class="number">0</span>, <span class="string">b'0'</span>, <span class="string">b'1'</span>, <span class="comment">// 4x |
| </span><span class="string">b'2'</span>, <span class="string">b'3'</span>, <span class="string">b'4'</span>, <span class="string">b'5'</span>, <span class="string">b'6'</span>, <span class="string">b'7'</span>, <span class="string">b'8'</span>, <span class="string">b'9'</span>, <span class="string">b':'</span>, <span class="number">0</span>, <span class="comment">// 5x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="string">b'A'</span>, <span class="string">b'B'</span>, <span class="string">b'C'</span>, <span class="string">b'D'</span>, <span class="string">b'E'</span>, <span class="comment">// 6x |
| </span><span class="string">b'F'</span>, <span class="string">b'G'</span>, <span class="string">b'H'</span>, <span class="string">b'I'</span>, <span class="string">b'J'</span>, <span class="string">b'K'</span>, <span class="string">b'L'</span>, <span class="string">b'M'</span>, <span class="string">b'N'</span>, <span class="string">b'O'</span>, <span class="comment">// 7x |
| </span><span class="string">b'P'</span>, <span class="string">b'Q'</span>, <span class="string">b'R'</span>, <span class="string">b'S'</span>, <span class="string">b'T'</span>, <span class="string">b'U'</span>, <span class="string">b'V'</span>, <span class="string">b'W'</span>, <span class="string">b'X'</span>, <span class="string">b'Y'</span>, <span class="comment">// 8x |
| </span><span class="string">b'Z'</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="string">b'a'</span>, <span class="string">b'b'</span>, <span class="string">b'c'</span>, <span class="comment">// 9x |
| </span><span class="string">b'd'</span>, <span class="string">b'e'</span>, <span class="string">b'f'</span>, <span class="string">b'g'</span>, <span class="string">b'h'</span>, <span class="string">b'i'</span>, <span class="string">b'j'</span>, <span class="string">b'k'</span>, <span class="string">b'l'</span>, <span class="string">b'm'</span>, <span class="comment">// 10x |
| </span><span class="string">b'n'</span>, <span class="string">b'o'</span>, <span class="string">b'p'</span>, <span class="string">b'q'</span>, <span class="string">b'r'</span>, <span class="string">b's'</span>, <span class="string">b't'</span>, <span class="string">b'u'</span>, <span class="string">b'v'</span>, <span class="string">b'w'</span>, <span class="comment">// 11x |
| </span><span class="string">b'x'</span>, <span class="string">b'y'</span>, <span class="string">b'z'</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="string">b'~'</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 12x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 13x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 14x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 15x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 16x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 17x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 18x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 19x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 20x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 21x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 22x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 23x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="comment">// 24x |
| </span><span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0 </span><span class="comment">// 25x |
| </span>]; |
| |
| <span class="kw">impl </span>Scheme2<usize> { |
| <span class="comment">// Postcondition: On all Ok() returns, s is valid UTF-8 |
| </span><span class="kw">fn </span>parse_exact(s: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><Scheme2<()>, InvalidUri> { |
| <span class="kw">match </span>s { |
| <span class="string">b"http" </span>=> <span class="prelude-val">Ok</span>(Protocol::Http.into()), |
| <span class="string">b"https" </span>=> <span class="prelude-val">Ok</span>(Protocol::Https.into()), |
| <span class="kw">_ </span>=> { |
| <span class="kw">if </span>s.len() > MAX_SCHEME_LEN { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ErrorKind::SchemeTooLong.into()); |
| } |
| |
| <span class="comment">// check that each byte in s is a SCHEME_CHARS which implies |
| // that it is a valid single byte UTF-8 code point. |
| </span><span class="kw">for </span><span class="kw-2">&</span>b <span class="kw">in </span>s { |
| <span class="kw">match </span>SCHEME_CHARS[b <span class="kw">as </span>usize] { |
| <span class="string">b':' </span>=> { |
| <span class="comment">// Don't want :// here |
| </span><span class="kw">return </span><span class="prelude-val">Err</span>(ErrorKind::InvalidScheme.into()); |
| } |
| <span class="number">0 </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ErrorKind::InvalidScheme.into()); |
| } |
| <span class="kw">_ </span>=> {} |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(Scheme2::Other(())) |
| } |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>parse(s: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><Scheme2<usize>, InvalidUri> { |
| <span class="kw">if </span>s.len() >= <span class="number">7 </span>{ |
| <span class="comment">// Check for HTTP |
| </span><span class="kw">if </span>s[..<span class="number">7</span>].eq_ignore_ascii_case(<span class="string">b"http://"</span>) { |
| <span class="comment">// Prefix will be striped |
| </span><span class="kw">return </span><span class="prelude-val">Ok</span>(Protocol::Http.into()); |
| } |
| } |
| |
| <span class="kw">if </span>s.len() >= <span class="number">8 </span>{ |
| <span class="comment">// Check for HTTPs |
| </span><span class="kw">if </span>s[..<span class="number">8</span>].eq_ignore_ascii_case(<span class="string">b"https://"</span>) { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(Protocol::Https.into()); |
| } |
| } |
| |
| <span class="kw">if </span>s.len() > <span class="number">3 </span>{ |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..s.len() { |
| <span class="kw">let </span>b = s[i]; |
| |
| <span class="kw">match </span>SCHEME_CHARS[b <span class="kw">as </span>usize] { |
| <span class="string">b':' </span>=> { |
| <span class="comment">// Not enough data remaining |
| </span><span class="kw">if </span>s.len() < i + <span class="number">3 </span>{ |
| <span class="kw">break</span>; |
| } |
| |
| <span class="comment">// Not a scheme |
| </span><span class="kw">if </span><span class="kw-2">&</span>s[i + <span class="number">1</span>..i + <span class="number">3</span>] != <span class="string">b"//" </span>{ |
| <span class="kw">break</span>; |
| } |
| |
| <span class="kw">if </span>i > MAX_SCHEME_LEN { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ErrorKind::SchemeTooLong.into()); |
| } |
| |
| <span class="comment">// Return scheme |
| </span><span class="kw">return </span><span class="prelude-val">Ok</span>(Scheme2::Other(i)); |
| } |
| <span class="comment">// Invald scheme character, abort |
| </span><span class="number">0 </span>=> <span class="kw">break</span>, |
| <span class="kw">_ </span>=> {} |
| } |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(Scheme2::None) |
| } |
| } |
| |
| <span class="kw">impl </span>Protocol { |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Protocol::Http => <span class="number">4</span>, |
| Protocol::Https => <span class="number">5</span>, |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><T> From<Protocol> <span class="kw">for </span>Scheme2<T> { |
| <span class="kw">fn </span>from(src: Protocol) -> <span class="self">Self </span>{ |
| Scheme2::Standard(src) |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">impl </span>From<Scheme2> <span class="kw">for </span>Scheme { |
| <span class="kw">fn </span>from(src: Scheme2) -> <span class="self">Self </span>{ |
| Scheme { inner: src } |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>test { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>scheme_eq_to_str() { |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>scheme(<span class="string">"http"</span>), <span class="string">"http"</span>); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>scheme(<span class="string">"https"</span>), <span class="string">"https"</span>); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>scheme(<span class="string">"ftp"</span>), <span class="string">"ftp"</span>); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>scheme(<span class="string">"my+funky+scheme"</span>), <span class="string">"my+funky+scheme"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>invalid_scheme_is_error() { |
| Scheme::try_from(<span class="string">"my_funky_scheme"</span>).expect_err(<span class="string">"Unexpectly valid Scheme"</span>); |
| |
| <span class="comment">// Invalid UTF-8 |
| </span>Scheme::try_from([<span class="number">0xC0</span>].as_ref()).expect_err(<span class="string">"Unexpectly valid Scheme"</span>); |
| } |
| |
| <span class="kw">fn </span>scheme(s: <span class="kw-2">&</span>str) -> Scheme { |
| s.parse().expect(<span class="kw-2">&</span><span class="macro">format!</span>(<span class="string">"Invalid scheme: {}"</span>, s)) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="http" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |