| <!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/completion.rs`."> |
| <meta name="keywords" content="rust, rustlang, rust-lang"> |
| |
| <title>completion.rs.html -- source</title> |
| |
| <link rel="stylesheet" type="text/css" href="../../normalize.css"> |
| <link rel="stylesheet" type="text/css" href="../../rustdoc.css"> |
| <link rel="stylesheet" type="text/css" href="../../main.css"> |
| |
| |
| |
| |
| </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"> |
| |
| |
| </nav> |
| |
| <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"> |
| </div> |
| </form> |
| </nav> |
| |
| <section id='main' class="content"><pre class="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> |
| </pre><pre class="rust "> |
| <span class="doccomment">//! Completion API</span> |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">borrow</span>::<span class="ident">Cow</span>::{<span class="self">self</span>, <span class="ident">Borrowed</span>, <span class="ident">Owned</span>}; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">BTreeSet</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">path</span>::{<span class="self">self</span>, <span class="ident">Path</span>}; |
| |
| <span class="kw">use</span> <span class="kw">super</span>::<span class="prelude-ty">Result</span>; |
| <span class="kw">use</span> <span class="ident">line_buffer</span>::<span class="ident">LineBuffer</span>; |
| |
| <span class="comment">// TODO: let the implementers choose/find word boudaries ???</span> |
| <span class="comment">// (line, pos) is like (rl_line_buffer, rl_point) to make contextual completion ("select t.na| from tbl as t")</span> |
| <span class="comment">// TOOD: make &self &mut self ???</span> |
| |
| <span class="doccomment">/// To be called for tab-completion.</span> |
| <span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">Completer</span> { |
| <span class="doccomment">/// Takes the currently edited `line` with the cursor `pos`ition and</span> |
| <span class="doccomment">/// returns the start position and the completion candidates for the partial word to be completed.</span> |
| <span class="doccomment">/// "ls /usr/loc" => Ok((3, vec!["/usr/local/"]))</span> |
| <span class="kw">fn</span> <span class="ident">complete</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">line</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>)<span class="op">></span>; |
| <span class="doccomment">/// Updates the edited `line` with the `elected` candidate.</span> |
| <span class="kw">fn</span> <span class="ident">update</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">line</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">LineBuffer</span>, <span class="ident">start</span>: <span class="ident">usize</span>, <span class="ident">elected</span>: <span class="kw-2">&</span><span class="ident">str</span>) { |
| <span class="kw">let</span> <span class="ident">end</span> <span class="op">=</span> <span class="ident">line</span>.<span class="ident">pos</span>(); |
| <span class="ident">line</span>.<span class="ident">replace</span>(<span class="ident">start</span>..<span class="ident">end</span>, <span class="ident">elected</span>) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Completer</span> <span class="kw">for</span> () { |
| <span class="kw">fn</span> <span class="ident">complete</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">_line</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">_pos</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>)<span class="op">></span> { |
| <span class="prelude-val">Ok</span>((<span class="number">0</span>, <span class="ident">Vec</span>::<span class="ident">new</span>())) |
| } |
| <span class="kw">fn</span> <span class="ident">update</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">_line</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">LineBuffer</span>, <span class="ident">_start</span>: <span class="ident">usize</span>, <span class="ident">_elected</span>: <span class="kw-2">&</span><span class="ident">str</span>) { |
| <span class="macro">unreachable</span><span class="macro">!</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'c</span>, <span class="ident">C</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Completer</span><span class="op">></span> <span class="ident">Completer</span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'c</span> <span class="ident">C</span> { |
| <span class="kw">fn</span> <span class="ident">complete</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">line</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>)<span class="op">></span> { |
| (<span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">complete</span>(<span class="ident">line</span>, <span class="ident">pos</span>) |
| } |
| <span class="kw">fn</span> <span class="ident">update</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">line</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">LineBuffer</span>, <span class="ident">start</span>: <span class="ident">usize</span>, <span class="ident">elected</span>: <span class="kw-2">&</span><span class="ident">str</span>) { |
| (<span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">update</span>(<span class="ident">line</span>, <span class="ident">start</span>, <span class="ident">elected</span>) |
| } |
| } |
| <span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">box_completer</span> { |
| ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">id</span>: <span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> { |
| $( |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">C</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Completer</span><span class="op">></span> <span class="ident">Completer</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">id</span><span class="op"><</span><span class="ident">C</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">complete</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">line</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>)<span class="op">></span> { |
| (<span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">complete</span>(<span class="ident">line</span>, <span class="ident">pos</span>) |
| } |
| <span class="kw">fn</span> <span class="ident">update</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">line</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">LineBuffer</span>, <span class="ident">start</span>: <span class="ident">usize</span>, <span class="ident">elected</span>: <span class="kw-2">&</span><span class="ident">str</span>) { |
| (<span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>).<span class="ident">update</span>(<span class="ident">line</span>, <span class="ident">start</span>, <span class="ident">elected</span>) |
| } |
| } |
| )<span class="op">*</span> |
| } |
| } |
| |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Arc</span>; |
| <span class="macro">box_completer</span><span class="macro">!</span> { <span class="ident">Box</span> <span class="ident">Rc</span> <span class="ident">Arc</span> } |
| |
| <span class="doccomment">/// A `Completer` for file and folder names.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FilenameCompleter</span> { |
| <span class="ident">break_chars</span>: <span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>, |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> |
| <span class="kw">static</span> <span class="ident">DEFAULT_BREAK_CHARS</span>: [<span class="ident">char</span>; <span class="number">18</span>] <span class="op">=</span> [<span class="string">' '</span>, <span class="string">'\t'</span>, <span class="string">'\n'</span>, <span class="string">'"'</span>, <span class="string">'\\'</span>, <span class="string">'\''</span>, <span class="string">'`'</span>, <span class="string">'@'</span>, <span class="string">'$'</span>, <span class="string">'>'</span>, |
| <span class="string">'<'</span>, <span class="string">'='</span>, <span class="string">';'</span>, <span class="string">'|'</span>, <span class="string">'&'</span>, <span class="string">'{'</span>, <span class="string">'('</span>, <span class="string">'\0'</span>]; |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> |
| <span class="kw">static</span> <span class="ident">ESCAPE_CHAR</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="string">'\\'</span>); |
| <span class="comment">// Remove \ to make file completion works on windows</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span> |
| <span class="kw">static</span> <span class="ident">DEFAULT_BREAK_CHARS</span>: [<span class="ident">char</span>; <span class="number">17</span>] <span class="op">=</span> [<span class="string">' '</span>, <span class="string">'\t'</span>, <span class="string">'\n'</span>, <span class="string">'"'</span>, <span class="string">'\''</span>, <span class="string">'`'</span>, <span class="string">'@'</span>, <span class="string">'$'</span>, <span class="string">'>'</span>, <span class="string">'<'</span>, |
| <span class="string">'='</span>, <span class="string">';'</span>, <span class="string">'|'</span>, <span class="string">'&'</span>, <span class="string">'{'</span>, <span class="string">'('</span>, <span class="string">'\0'</span>]; |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span> |
| <span class="kw">static</span> <span class="ident">ESCAPE_CHAR</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| |
| <span class="kw">impl</span> <span class="ident">FilenameCompleter</span> { |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">FilenameCompleter</span> { |
| <span class="ident">FilenameCompleter</span> { <span class="ident">break_chars</span>: <span class="ident">DEFAULT_BREAK_CHARS</span>.<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>() } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">FilenameCompleter</span> { |
| <span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">FilenameCompleter</span> { |
| <span class="ident">FilenameCompleter</span>::<span class="ident">new</span>() |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Completer</span> <span class="kw">for</span> <span class="ident">FilenameCompleter</span> { |
| <span class="kw">fn</span> <span class="ident">complete</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">line</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>)<span class="op">></span> { |
| <span class="kw">let</span> (<span class="ident">start</span>, <span class="ident">path</span>) <span class="op">=</span> <span class="ident">extract_word</span>(<span class="ident">line</span>, <span class="ident">pos</span>, <span class="ident">ESCAPE_CHAR</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">break_chars</span>); |
| <span class="kw">let</span> <span class="ident">path</span> <span class="op">=</span> <span class="ident">unescape</span>(<span class="ident">path</span>, <span class="ident">ESCAPE_CHAR</span>); |
| <span class="kw">let</span> <span class="ident">matches</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">filename_complete</span>(<span class="kw-2">&</span><span class="ident">path</span>, <span class="ident">ESCAPE_CHAR</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">break_chars</span>)); |
| <span class="prelude-val">Ok</span>((<span class="ident">start</span>, <span class="ident">matches</span>)) |
| } |
| } |
| |
| <span class="doccomment">/// Remove escape char</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">unescape</span>(<span class="ident">input</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">esc_char</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></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="kw">if</span> <span class="ident">esc_char</span>.<span class="ident">is_none</span>() { |
| <span class="kw">return</span> <span class="ident">Borrowed</span>(<span class="ident">input</span>); |
| } |
| <span class="kw">let</span> <span class="ident">esc_char</span> <span class="op">=</span> <span class="ident">esc_char</span>.<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">chars</span>().<span class="ident">filter</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="op">==</span> <span class="ident">esc_char</span>).<span class="ident">count</span>(); |
| <span class="kw">if</span> <span class="ident">n</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="ident">Borrowed</span>(<span class="ident">input</span>); |
| } |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">with_capacity</span>(<span class="ident">input</span>.<span class="ident">len</span>() <span class="op">-</span> <span class="ident">n</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">chars</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">chars</span>(); |
| <span class="kw">while</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">ch</span>) <span class="op">=</span> <span class="ident">chars</span>.<span class="ident">next</span>() { |
| <span class="kw">if</span> <span class="ident">ch</span> <span class="op">==</span> <span class="ident">esc_char</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">ch</span>) <span class="op">=</span> <span class="ident">chars</span>.<span class="ident">next</span>() { |
| <span class="ident">result</span>.<span class="ident">push</span>(<span class="ident">ch</span>); |
| } |
| } <span class="kw">else</span> { |
| <span class="ident">result</span>.<span class="ident">push</span>(<span class="ident">ch</span>); |
| } |
| } |
| <span class="ident">Owned</span>(<span class="ident">result</span>) |
| } |
| |
| <span class="doccomment">/// Escape any `break_chars` in `input` string with `esc_char`.</span> |
| <span class="doccomment">/// For example, '/User Information' becomes '/User\ Information'</span> |
| <span class="doccomment">/// when space is a breaking char and '\' the escape char.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">escape</span>(<span class="ident">input</span>: <span class="ident">String</span>, <span class="ident">esc_char</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>, <span class="ident">break_chars</span>: <span class="kw-2">&</span><span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>) <span class="op">-></span> <span class="ident">String</span> { |
| <span class="kw">if</span> <span class="ident">esc_char</span>.<span class="ident">is_none</span>() { |
| <span class="kw">return</span> <span class="ident">input</span>; |
| } |
| <span class="kw">let</span> <span class="ident">esc_char</span> <span class="op">=</span> <span class="ident">esc_char</span>.<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">input</span> |
| .<span class="ident">chars</span>() |
| .<span class="ident">filter</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">break_chars</span>.<span class="ident">contains</span>(<span class="ident">c</span>)) |
| .<span class="ident">count</span>(); |
| <span class="kw">if</span> <span class="ident">n</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="ident">input</span>; |
| } |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">with_capacity</span>(<span class="ident">input</span>.<span class="ident">len</span>() <span class="op">+</span> <span class="ident">n</span>); |
| |
| <span class="kw">for</span> <span class="ident">c</span> <span class="kw">in</span> <span class="ident">input</span>.<span class="ident">chars</span>() { |
| <span class="kw">if</span> <span class="ident">break_chars</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="ident">c</span>) { |
| <span class="ident">result</span>.<span class="ident">push</span>(<span class="ident">esc_char</span>); |
| } |
| <span class="ident">result</span>.<span class="ident">push</span>(<span class="ident">c</span>); |
| } |
| <span class="ident">result</span> |
| } |
| |
| <span class="kw">fn</span> <span class="ident">filename_complete</span>(<span class="ident">path</span>: <span class="kw-2">&</span><span class="ident">str</span>, |
| <span class="ident">esc_char</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>, |
| <span class="ident">break_chars</span>: <span class="kw-2">&</span><span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>) |
| <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">>></span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">env</span>::{<span class="ident">current_dir</span>, <span class="ident">home_dir</span>}; |
| |
| <span class="kw">let</span> <span class="ident">sep</span> <span class="op">=</span> <span class="ident">path</span>::<span class="ident">MAIN_SEPARATOR</span>; |
| <span class="kw">let</span> (<span class="ident">dir_name</span>, <span class="ident">file_name</span>) <span class="op">=</span> <span class="kw">match</span> <span class="ident">path</span>.<span class="ident">rfind</span>(<span class="ident">sep</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">idx</span>) <span class="op">=></span> <span class="ident">path</span>.<span class="ident">split_at</span>(<span class="ident">idx</span> <span class="op">+</span> <span class="ident">sep</span>.<span class="ident">len_utf8</span>()), |
| <span class="prelude-val">None</span> <span class="op">=></span> (<span class="string">""</span>, <span class="ident">path</span>), |
| }; |
| |
| <span class="kw">let</span> <span class="ident">dir_path</span> <span class="op">=</span> <span class="ident">Path</span>::<span class="ident">new</span>(<span class="ident">dir_name</span>); |
| <span class="kw">let</span> <span class="ident">dir</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">dir_path</span>.<span class="ident">starts_with</span>(<span class="string">"~"</span>) { |
| <span class="comment">// ~[/...]</span> |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">home</span>) <span class="op">=</span> <span class="ident">home_dir</span>() { |
| <span class="kw">match</span> <span class="ident">dir_path</span>.<span class="ident">strip_prefix</span>(<span class="string">"~"</span>) { |
| <span class="prelude-val">Ok</span>(<span class="ident">rel_path</span>) <span class="op">=></span> <span class="ident">home</span>.<span class="ident">join</span>(<span class="ident">rel_path</span>), |
| _ <span class="op">=></span> <span class="ident">home</span>, |
| } |
| } <span class="kw">else</span> { |
| <span class="ident">dir_path</span>.<span class="ident">to_path_buf</span>() |
| } |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">dir_path</span>.<span class="ident">is_relative</span>() { |
| <span class="comment">// TODO ~user[/...] (https://crates.io/crates/users)</span> |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">cwd</span>) <span class="op">=</span> <span class="ident">current_dir</span>() { |
| <span class="ident">cwd</span>.<span class="ident">join</span>(<span class="ident">dir_path</span>) |
| } <span class="kw">else</span> { |
| <span class="ident">dir_path</span>.<span class="ident">to_path_buf</span>() |
| } |
| } <span class="kw">else</span> { |
| <span class="ident">dir_path</span>.<span class="ident">to_path_buf</span>() |
| }; |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">entries</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>(); |
| <span class="kw">for</span> <span class="ident">entry</span> <span class="kw">in</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">dir</span>.<span class="ident">read_dir</span>()) { |
| <span class="kw">let</span> <span class="ident">entry</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">entry</span>); |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">s</span>) <span class="op">=</span> <span class="ident">entry</span>.<span class="ident">file_name</span>().<span class="ident">to_str</span>() { |
| <span class="kw">if</span> <span class="ident">s</span>.<span class="ident">starts_with</span>(<span class="ident">file_name</span>) { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">path</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="ident">dir_name</span>) <span class="op">+</span> <span class="ident">s</span>; |
| <span class="kw">if</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="ident">entry</span>.<span class="ident">path</span>())).<span class="ident">is_dir</span>() { |
| <span class="ident">path</span>.<span class="ident">push</span>(<span class="ident">sep</span>); |
| } |
| <span class="ident">entries</span>.<span class="ident">push</span>(<span class="ident">escape</span>(<span class="ident">path</span>, <span class="ident">esc_char</span>, <span class="ident">break_chars</span>)); |
| } |
| } |
| } |
| <span class="prelude-val">Ok</span>(<span class="ident">entries</span>) |
| } |
| |
| <span class="doccomment">/// Given a `line` and a cursor `pos`ition,</span> |
| <span class="doccomment">/// try to find backward the start of a word.</span> |
| <span class="doccomment">/// Return (0, `line[..pos]`) if no break char has been found.</span> |
| <span class="doccomment">/// Return the word and its start position (idx, `line[idx..pos]`) otherwise.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">extract_word</span><span class="op"><</span><span class="lifetime">'l</span><span class="op">></span>(<span class="ident">line</span>: <span class="kw-2">&</span><span class="lifetime">'l</span> <span class="ident">str</span>, |
| <span class="ident">pos</span>: <span class="ident">usize</span>, |
| <span class="ident">esc_char</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>, |
| <span class="ident">break_chars</span>: <span class="kw-2">&</span><span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>) |
| <span class="op">-></span> (<span class="ident">usize</span>, <span class="kw-2">&</span><span class="lifetime">'l</span> <span class="ident">str</span>) { |
| <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">line</span>[..<span class="ident">pos</span>]; |
| <span class="kw">if</span> <span class="ident">line</span>.<span class="ident">is_empty</span>() { |
| <span class="kw">return</span> (<span class="number">0</span>, <span class="ident">line</span>); |
| } |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">start</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| <span class="kw">for</span> (<span class="ident">i</span>, <span class="ident">c</span>) <span class="kw">in</span> <span class="ident">line</span>.<span class="ident">char_indices</span>().<span class="ident">rev</span>() { |
| <span class="kw">if</span> <span class="ident">esc_char</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">start</span>.<span class="ident">is_some</span>() { |
| <span class="kw">if</span> <span class="ident">esc_char</span>.<span class="ident">unwrap</span>() <span class="op">==</span> <span class="ident">c</span> { |
| <span class="comment">// escaped break char</span> |
| <span class="ident">start</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| <span class="kw">continue</span>; |
| } <span class="kw">else</span> { |
| <span class="kw">break</span>; |
| } |
| } |
| <span class="kw">if</span> <span class="ident">break_chars</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="ident">c</span>) { |
| <span class="ident">start</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">i</span> <span class="op">+</span> <span class="ident">c</span>.<span class="ident">len_utf8</span>()); |
| <span class="kw">if</span> <span class="ident">esc_char</span>.<span class="ident">is_none</span>() { |
| <span class="kw">break</span>; |
| } <span class="comment">// else maybe escaped...</span> |
| } |
| } |
| |
| <span class="kw">match</span> <span class="ident">start</span> { |
| <span class="prelude-val">Some</span>(<span class="ident">start</span>) <span class="op">=></span> (<span class="ident">start</span>, <span class="kw-2">&</span><span class="ident">line</span>[<span class="ident">start</span>..]), |
| <span class="prelude-val">None</span> <span class="op">=></span> (<span class="number">0</span>, <span class="ident">line</span>), |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">longest_common_prefix</span>(<span class="ident">candidates</span>: <span class="kw-2">&</span>[<span class="ident">String</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="kw">if</span> <span class="ident">candidates</span>.<span class="ident">is_empty</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">candidates</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">1</span> { |
| <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="ident">candidates</span>[<span class="number">0</span>]); |
| } |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">longest_common_prefix</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="lifetime">'o</span>: <span class="kw">loop</span> { |
| <span class="kw">for</span> (<span class="ident">i</span>, <span class="ident">c1</span>) <span class="kw">in</span> <span class="ident">candidates</span>.<span class="ident">iter</span>().<span class="ident">enumerate</span>().<span class="ident">take</span>(<span class="ident">candidates</span>.<span class="ident">len</span>() <span class="op">-</span> <span class="number">1</span>) { |
| <span class="kw">let</span> <span class="ident">b1</span> <span class="op">=</span> <span class="ident">c1</span>.<span class="ident">as_bytes</span>(); |
| <span class="kw">let</span> <span class="ident">b2</span> <span class="op">=</span> <span class="ident">candidates</span>[<span class="ident">i</span> <span class="op">+</span> <span class="number">1</span>].<span class="ident">as_bytes</span>(); |
| <span class="kw">if</span> <span class="ident">b1</span>.<span class="ident">len</span>() <span class="op"><=</span> <span class="ident">longest_common_prefix</span> <span class="op">||</span> <span class="ident">b2</span>.<span class="ident">len</span>() <span class="op"><=</span> <span class="ident">longest_common_prefix</span> <span class="op">||</span> |
| <span class="ident">b1</span>[<span class="ident">longest_common_prefix</span>] <span class="op">!=</span> <span class="ident">b2</span>[<span class="ident">longest_common_prefix</span>] { |
| <span class="kw">break</span> <span class="lifetime">'o</span>; |
| } |
| } |
| <span class="ident">longest_common_prefix</span> <span class="op">+=</span> <span class="number">1</span>; |
| } |
| <span class="kw">while</span> <span class="op">!</span><span class="ident">candidates</span>[<span class="number">0</span>].<span class="ident">is_char_boundary</span>(<span class="ident">longest_common_prefix</span>) { |
| <span class="ident">longest_common_prefix</span> <span class="op">-=</span> <span class="number">1</span>; |
| } |
| <span class="kw">if</span> <span class="ident">longest_common_prefix</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="ident">candidates</span>[<span class="number">0</span>][<span class="number">0</span>..<span class="ident">longest_common_prefix</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="ident">std</span>::<span class="ident">collections</span>::<span class="ident">BTreeSet</span>; |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">extract_word</span>() { |
| <span class="kw">let</span> <span class="ident">break_chars</span>: <span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> <span class="op">=</span> <span class="kw">super</span>::<span class="ident">DEFAULT_BREAK_CHARS</span>.<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>(); |
| <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="string">"ls '/usr/local/b"</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">4</span>, <span class="string">"/usr/local/b"</span>), |
| <span class="kw">super</span>::<span class="ident">extract_word</span>(<span class="ident">line</span>, <span class="ident">line</span>.<span class="ident">len</span>(), <span class="prelude-val">Some</span>(<span class="string">'\\'</span>), <span class="kw-2">&</span><span class="ident">break_chars</span>)); |
| <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="string">"ls /User\\ Information"</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">3</span>, <span class="string">"/User\\ Information"</span>), |
| <span class="kw">super</span>::<span class="ident">extract_word</span>(<span class="ident">line</span>, <span class="ident">line</span>.<span class="ident">len</span>(), <span class="prelude-val">Some</span>(<span class="string">'\\'</span>), <span class="kw-2">&</span><span class="ident">break_chars</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">unescape</span>() { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">borrow</span>::<span class="ident">Cow</span>::{<span class="self">self</span>, <span class="ident">Borrowed</span>, <span class="ident">Owned</span>}; |
| <span class="kw">let</span> <span class="ident">input</span> <span class="op">=</span> <span class="string">"/usr/local/b"</span>; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Borrowed</span>(<span class="ident">input</span>), <span class="kw">super</span>::<span class="ident">unescape</span>(<span class="ident">input</span>, <span class="prelude-val">Some</span>(<span class="string">'\\'</span>))); |
| <span class="kw">let</span> <span class="ident">input</span> <span class="op">=</span> <span class="string">"/User\\ Information"</span>; |
| <span class="kw">let</span> <span class="ident">result</span>: <span class="ident">Cow</span><span class="op"><</span><span class="ident">str</span><span class="op">></span> <span class="op">=</span> <span class="ident">Owned</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"/User Information"</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">result</span>, <span class="kw">super</span>::<span class="ident">unescape</span>(<span class="ident">input</span>, <span class="prelude-val">Some</span>(<span class="string">'\\'</span>))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">escape</span>() { |
| <span class="kw">let</span> <span class="ident">break_chars</span>: <span class="ident">BTreeSet</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> <span class="op">=</span> <span class="kw">super</span>::<span class="ident">DEFAULT_BREAK_CHARS</span>.<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>(); |
| <span class="kw">let</span> <span class="ident">input</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"/usr/local/b"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">input</span>.<span class="ident">clone</span>(), |
| <span class="kw">super</span>::<span class="ident">escape</span>(<span class="ident">input</span>, <span class="prelude-val">Some</span>(<span class="string">'\\'</span>), <span class="kw-2">&</span><span class="ident">break_chars</span>)); |
| <span class="kw">let</span> <span class="ident">input</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"/User Information"</span>); |
| <span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"/User\\ Information"</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">result</span>, <span class="kw">super</span>::<span class="ident">escape</span>(<span class="ident">input</span>, <span class="prelude-val">Some</span>(<span class="string">'\\'</span>), <span class="kw-2">&</span><span class="ident">break_chars</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">longest_common_prefix</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">candidates</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[]; |
| { |
| <span class="kw">let</span> <span class="ident">lcp</span> <span class="op">=</span> <span class="kw">super</span>::<span class="ident">longest_common_prefix</span>(<span class="kw-2">&</span><span class="ident">candidates</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">lcp</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="string">"User"</span>; |
| <span class="kw">let</span> <span class="ident">c1</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="ident">s</span>); |
| <span class="ident">candidates</span>.<span class="ident">push</span>(<span class="ident">c1</span>.<span class="ident">clone</span>()); |
| { |
| <span class="kw">let</span> <span class="ident">lcp</span> <span class="op">=</span> <span class="kw">super</span>::<span class="ident">longest_common_prefix</span>(<span class="kw-2">&</span><span class="ident">candidates</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="ident">s</span>), <span class="ident">lcp</span>); |
| } |
| |
| <span class="kw">let</span> <span class="ident">c2</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"Users"</span>); |
| <span class="ident">candidates</span>.<span class="ident">push</span>(<span class="ident">c2</span>.<span class="ident">clone</span>()); |
| { |
| <span class="kw">let</span> <span class="ident">lcp</span> <span class="op">=</span> <span class="kw">super</span>::<span class="ident">longest_common_prefix</span>(<span class="kw-2">&</span><span class="ident">candidates</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="ident">s</span>), <span class="ident">lcp</span>); |
| } |
| |
| <span class="kw">let</span> <span class="ident">c3</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">""</span>); |
| <span class="ident">candidates</span>.<span class="ident">push</span>(<span class="ident">c3</span>.<span class="ident">clone</span>()); |
| { |
| <span class="kw">let</span> <span class="ident">lcp</span> <span class="op">=</span> <span class="kw">super</span>::<span class="ident">longest_common_prefix</span>(<span class="kw-2">&</span><span class="ident">candidates</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">lcp</span>.<span class="ident">is_none</span>()); |
| } |
| |
| <span class="kw">let</span> <span class="ident">candidates</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"fée"</span>), <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"fête"</span>)]; |
| <span class="kw">let</span> <span class="ident">lcp</span> <span class="op">=</span> <span class="kw">super</span>::<span class="ident">longest_common_prefix</span>(<span class="kw-2">&</span><span class="ident">candidates</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"f"</span>), <span class="ident">lcp</span>); |
| } |
| } |
| </pre> |
| </section> |
| <section id='search' class="content hidden"></section> |
| |
| <section class="footer"></section> |
| |
| <aside id="help" class="hidden"> |
| <div> |
| <h1 class="hidden">Help</h1> |
| |
| <div class="shortcuts"> |
| <h2>Keyboard Shortcuts</h2> |
| |
| <dl> |
| <dt>?</dt> |
| <dd>Show this help dialog</dd> |
| <dt>S</dt> |
| <dd>Focus the search field</dd> |
| <dt>⇤</dt> |
| <dd>Move up in search results</dd> |
| <dt>⇥</dt> |
| <dd>Move down in search results</dd> |
| <dt>⏎</dt> |
| <dd>Go to active search result</dd> |
| <dt>+</dt> |
| <dd>Collapse/expand all sections</dd> |
| </dl> |
| </div> |
| |
| <div class="infos"> |
| <h2>Search Tricks</h2> |
| |
| <p> |
| Prefix searches with a type followed by a colon (e.g. |
| <code>fn:</code>) to restrict the search to a given type. |
| </p> |
| |
| <p> |
| Accepted types are: <code>fn</code>, <code>mod</code>, |
| <code>struct</code>, <code>enum</code>, |
| <code>trait</code>, <code>type</code>, <code>macro</code>, |
| and <code>const</code>. |
| </p> |
| |
| <p> |
| Search functions by type signature (e.g. |
| <code>vec -> usize</code> or <code>* -> vec</code>) |
| </p> |
| </div> |
| </div> |
| </aside> |
| |
| |
| |
| <script> |
| window.rootPath = "../../"; |
| window.currentCrate = "rustyline"; |
| </script> |
| <script src="../../main.js"></script> |
| <script defer src="../../search-index.js"></script> |
| </body> |
| </html> |