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| <section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span> |
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| <span id="263">263</span> |
| <span id="264">264</span> |
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| <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> |
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| <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> |
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| <span id="284">284</span> |
| <span id="285">285</span> |
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| <span id="288">288</span> |
| <span id="289">289</span> |
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| <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> |
| </pre><pre class="rust "> |
| <span class="doccomment">//! History API</span> |
| |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">VecDeque</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">vec_deque</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>::<span class="ident">File</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">iter</span>::<span class="ident">DoubleEndedIterator</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ops</span>::<span class="ident">Index</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">path</span>::<span class="ident">Path</span>; |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> |
| <span class="kw">use</span> <span class="ident">libc</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">config</span>::{<span class="ident">Config</span>, <span class="ident">HistoryDuplicates</span>}; |
| |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>, <span class="ident">Eq</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Direction</span> { |
| <span class="ident">Forward</span>, |
| <span class="ident">Reverse</span>, |
| } |
| |
| <span class="doccomment">/// Current state of the history.</span> |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">History</span> { |
| <span class="ident">entries</span>: <span class="ident">VecDeque</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, |
| <span class="ident">max_len</span>: <span class="ident">usize</span>, |
| <span class="ident">ignore_space</span>: <span class="ident">bool</span>, |
| <span class="ident">ignore_dups</span>: <span class="ident">bool</span>, |
| } |
| |
| <span class="kw">impl</span> <span class="ident">History</span> { |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">History</span> { |
| <span class="self">Self</span>::<span class="ident">with_config</span>(<span class="ident">Config</span>::<span class="ident">default</span>()) |
| } |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_config</span>(<span class="ident">config</span>: <span class="ident">Config</span>) <span class="op">-></span> <span class="ident">History</span> { |
| <span class="ident">History</span> { |
| <span class="ident">entries</span>: <span class="ident">VecDeque</span>::<span class="ident">new</span>(), |
| <span class="ident">max_len</span>: <span class="ident">config</span>.<span class="ident">max_history_size</span>(), |
| <span class="ident">ignore_space</span>: <span class="ident">config</span>.<span class="ident">history_duplicates</span>() <span class="op">==</span> <span class="ident">HistoryDuplicates</span>::<span class="ident">IgnoreConsecutive</span>, |
| <span class="ident">ignore_dups</span>: <span class="ident">config</span>.<span class="ident">history_ignore_space</span>(), |
| } |
| } |
| |
| <span class="doccomment">/// Return the history entry at position `index`, starting from 0.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">index</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">String</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">get</span>(<span class="ident">index</span>) |
| } |
| |
| <span class="doccomment">/// Return the last history entry (i.e. previous command)</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">last</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">String</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">back</span>() |
| } |
| |
| <span class="doccomment">/// Add a new entry in the history.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">str</span><span class="op">></span> <span class="op">+</span> <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">line</span>: <span class="ident">S</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">max_len</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="bool-val">false</span>; |
| } |
| <span class="kw">if</span> <span class="ident">line</span>.<span class="ident">as_ref</span>().<span class="ident">is_empty</span>() <span class="op">||</span> |
| (<span class="self">self</span>.<span class="ident">ignore_space</span> <span class="op">&&</span> |
| <span class="ident">line</span>.<span class="ident">as_ref</span>() |
| .<span class="ident">chars</span>() |
| .<span class="ident">next</span>() |
| .<span class="ident">map_or</span>(<span class="bool-val">true</span>, <span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span>.<span class="ident">is_whitespace</span>())) { |
| <span class="kw">return</span> <span class="bool-val">false</span>; |
| } |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">ignore_dups</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="self">self</span>.<span class="ident">entries</span>.<span class="ident">back</span>() { |
| <span class="kw">if</span> <span class="ident">s</span> <span class="op">==</span> <span class="ident">line</span>.<span class="ident">as_ref</span>() { |
| <span class="kw">return</span> <span class="bool-val">false</span>; |
| } |
| } |
| } |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="self">self</span>.<span class="ident">max_len</span> { |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">pop_front</span>(); |
| } |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">push_back</span>(<span class="ident">line</span>.<span class="ident">into</span>()); |
| <span class="bool-val">true</span> |
| } |
| |
| <span class="doccomment">/// Returns the number of entries in the history.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">len</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">len</span>() |
| } |
| <span class="doccomment">/// Returns true if the history has no entry.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_empty</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">is_empty</span>() |
| } |
| |
| <span class="doccomment">/// Set the maximum length for the history. This function can be called even</span> |
| <span class="doccomment">/// if there is already some history, the function will make sure to retain</span> |
| <span class="doccomment">/// just the latest `len` elements if the new history length value is smaller</span> |
| <span class="doccomment">/// than the amount of items already inside the history.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_max_len</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">len</span>: <span class="ident">usize</span>) { |
| <span class="self">self</span>.<span class="ident">max_len</span> <span class="op">=</span> <span class="ident">len</span>; |
| <span class="kw">if</span> <span class="ident">len</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">clear</span>(); |
| <span class="kw">return</span>; |
| } |
| <span class="kw">loop</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">len</span>() <span class="op"><=</span> <span class="ident">len</span> { |
| <span class="kw">break</span>; |
| } |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">pop_front</span>(); |
| } |
| } |
| |
| <span class="doccomment">/// Save the history in the specified file.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">save</span><span class="op"><</span><span class="ident">P</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">Path</span><span class="op">></span> <span class="op">+</span> <span class="question-mark">?</span><span class="ident">Sized</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">path</span>: <span class="kw-2">&</span><span class="ident">P</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::{<span class="ident">BufWriter</span>, <span class="ident">Write</span>}; |
| |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">is_empty</span>() { |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(()); |
| } |
| <span class="kw">let</span> <span class="ident">old_umask</span> <span class="op">=</span> <span class="ident">umask</span>(); |
| <span class="kw">let</span> <span class="ident">f</span> <span class="op">=</span> <span class="ident">File</span>::<span class="ident">create</span>(<span class="ident">path</span>); |
| <span class="ident">restore_umask</span>(<span class="ident">old_umask</span>); |
| <span class="kw">let</span> <span class="ident">file</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">f</span>); |
| <span class="ident">fix_perm</span>(<span class="kw-2">&</span><span class="ident">file</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">wtr</span> <span class="op">=</span> <span class="ident">BufWriter</span>::<span class="ident">new</span>(<span class="ident">file</span>); |
| <span class="kw">for</span> <span class="ident">entry</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">entries</span> { |
| <span class="macro">try</span><span class="macro">!</span>(<span class="ident">wtr</span>.<span class="ident">write_all</span>(<span class="ident">entry</span>.<span class="ident">as_bytes</span>())); |
| <span class="macro">try</span><span class="macro">!</span>(<span class="ident">wtr</span>.<span class="ident">write_all</span>(<span class="string">b"\n"</span>)); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// Load the history from the specified file.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Failure</span> |
| <span class="doccomment">/// Will return `Err` if path does not already exist.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">load</span><span class="op"><</span><span class="ident">P</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">Path</span><span class="op">></span> <span class="op">+</span> <span class="question-mark">?</span><span class="ident">Sized</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">path</span>: <span class="kw-2">&</span><span class="ident">P</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::{<span class="ident">BufRead</span>, <span class="ident">BufReader</span>}; |
| |
| <span class="kw">let</span> <span class="ident">file</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">File</span>::<span class="ident">open</span>(<span class="kw-2">&</span><span class="ident">path</span>)); |
| <span class="kw">let</span> <span class="ident">rdr</span> <span class="op">=</span> <span class="ident">BufReader</span>::<span class="ident">new</span>(<span class="ident">file</span>); |
| <span class="kw">for</span> <span class="ident">line</span> <span class="kw">in</span> <span class="ident">rdr</span>.<span class="ident">lines</span>() { |
| <span class="self">self</span>.<span class="ident">add</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="ident">line</span>).<span class="ident">as_ref</span>()); <span class="comment">// TODO truncate to MAX_LINE</span> |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// Clear history</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { |
| <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">clear</span>() |
| } |
| |
| <span class="doccomment">/// Search history (start position inclusive [0, len-1])</span> |
| <span class="doccomment">/// Return the absolute index of the nearest history entry that matches `term`.</span> |
| <span class="doccomment">/// Return None if no entry contains `term` between [start, len -1] for forward search</span> |
| <span class="doccomment">/// or between [0, start] for reverse search.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">search</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">term</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">start</span>: <span class="ident">usize</span>, <span class="ident">dir</span>: <span class="ident">Direction</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">test</span> <span class="op">=</span> <span class="op">|</span><span class="ident">entry</span>: <span class="kw-2">&</span><span class="ident">String</span><span class="op">|</span> <span class="ident">entry</span>.<span class="ident">contains</span>(<span class="ident">term</span>); |
| <span class="self">self</span>.<span class="ident">search_match</span>(<span class="ident">term</span>, <span class="ident">start</span>, <span class="ident">dir</span>, <span class="ident">test</span>) |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">starts_with</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">term</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">start</span>: <span class="ident">usize</span>, <span class="ident">dir</span>: <span class="ident">Direction</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">test</span> <span class="op">=</span> <span class="op">|</span><span class="ident">entry</span>: <span class="kw-2">&</span><span class="ident">String</span><span class="op">|</span> <span class="ident">entry</span>.<span class="ident">starts_with</span>(<span class="ident">term</span>); |
| <span class="self">self</span>.<span class="ident">search_match</span>(<span class="ident">term</span>, <span class="ident">start</span>, <span class="ident">dir</span>, <span class="ident">test</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">search_match</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">term</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">start</span>: <span class="ident">usize</span>, <span class="ident">dir</span>: <span class="ident">Direction</span>, <span class="ident">test</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">String</span>) <span class="op">-></span> <span class="ident">bool</span> |
| { |
| <span class="kw">if</span> <span class="ident">term</span>.<span class="ident">is_empty</span>() <span class="op">||</span> <span class="ident">start</span> <span class="op">>=</span> <span class="self">self</span>.<span class="ident">len</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="kw">match</span> <span class="ident">dir</span> { |
| <span class="ident">Direction</span>::<span class="ident">Reverse</span> <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">entries</span> |
| .<span class="ident">iter</span>() |
| .<span class="ident">rev</span>() |
| .<span class="ident">skip</span>(<span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">len</span>() <span class="op">-</span> <span class="number">1</span> <span class="op">-</span> <span class="ident">start</span>) |
| .<span class="ident">position</span>(<span class="ident">test</span>); |
| <span class="ident">index</span>.<span class="ident">and_then</span>(<span class="op">|</span><span class="ident">index</span><span class="op">|</span> <span class="prelude-val">Some</span>(<span class="ident">start</span> <span class="op">-</span> <span class="ident">index</span>)) |
| } |
| <span class="ident">Direction</span>::<span class="ident">Forward</span> <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">iter</span>().<span class="ident">skip</span>(<span class="ident">start</span>).<span class="ident">position</span>(<span class="ident">test</span>); |
| <span class="ident">index</span>.<span class="ident">and_then</span>(<span class="op">|</span><span class="ident">index</span><span class="op">|</span> <span class="prelude-val">Some</span>(<span class="ident">index</span> <span class="op">+</span> <span class="ident">start</span>)) |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Return a forward iterator.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">iter</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Iter</span> { |
| <span class="ident">Iter</span>(<span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">iter</span>()) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Index</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> <span class="kw">for</span> <span class="ident">History</span> { |
| <span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="ident">String</span>; |
| |
| <span class="kw">fn</span> <span class="ident">index</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">index</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">String</span> { |
| <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">entries</span>[<span class="ident">index</span>] |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">IntoIterator</span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">History</span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">String</span>; |
| <span class="kw">type</span> <span class="ident">IntoIter</span> <span class="op">=</span> <span class="ident">Iter</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>; |
| |
| <span class="kw">fn</span> <span class="ident">into_iter</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Iter</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">iter</span>() |
| } |
| } |
| |
| <span class="doccomment">/// History iterator.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Iter</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>(<span class="ident">vec_deque</span>::<span class="ident">Iter</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">String</span><span class="op">></span>); |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Iterator</span> <span class="kw">for</span> <span class="ident">Iter</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">String</span>; |
| |
| <span class="kw">fn</span> <span class="ident">next</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">String</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">next</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">size_hint</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> (<span class="ident">usize</span>, <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>) { |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">size_hint</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">DoubleEndedIterator</span> <span class="kw">for</span> <span class="ident">Iter</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">next_back</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">String</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">next_back</span>() |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span> |
| <span class="kw">fn</span> <span class="ident">umask</span>() <span class="op">-></span> <span class="ident">u16</span> { |
| <span class="number">0</span> |
| } |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> |
| <span class="kw">fn</span> <span class="ident">umask</span>() <span class="op">-></span> <span class="ident">libc</span>::<span class="ident">mode_t</span> { |
| <span class="kw">unsafe</span> { <span class="ident">libc</span>::<span class="ident">umask</span>(<span class="ident">libc</span>::<span class="ident">S_IXUSR</span> <span class="op">|</span> <span class="ident">libc</span>::<span class="ident">S_IRWXG</span> <span class="op">|</span> <span class="ident">libc</span>::<span class="ident">S_IRWXO</span>) } |
| } |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span> |
| <span class="kw">fn</span> <span class="ident">restore_umask</span>(_: <span class="ident">u16</span>) {} |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> |
| <span class="kw">fn</span> <span class="ident">restore_umask</span>(<span class="ident">old_umask</span>: <span class="ident">libc</span>::<span class="ident">mode_t</span>) { |
| <span class="kw">unsafe</span> { |
| <span class="ident">libc</span>::<span class="ident">umask</span>(<span class="ident">old_umask</span>); |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span> |
| <span class="kw">fn</span> <span class="ident">fix_perm</span>(_: <span class="kw-2">&</span><span class="ident">File</span>) {} |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> |
| <span class="kw">fn</span> <span class="ident">fix_perm</span>(<span class="ident">file</span>: <span class="kw-2">&</span><span class="ident">File</span>) { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">io</span>::<span class="ident">AsRawFd</span>; |
| <span class="kw">unsafe</span> { |
| <span class="ident">libc</span>::<span class="ident">fchmod</span>(<span class="ident">file</span>.<span class="ident">as_raw_fd</span>(), <span class="ident">libc</span>::<span class="ident">S_IRUSR</span> <span class="op">|</span> <span class="ident">libc</span>::<span class="ident">S_IWUSR</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">extern</span> <span class="kw">crate</span> <span class="ident">tempdir</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">path</span>::<span class="ident">Path</span>; |
| <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">Direction</span>, <span class="ident">History</span>}; |
| <span class="kw">use</span> <span class="ident">config</span>::<span class="ident">Config</span>; |
| |
| <span class="kw">fn</span> <span class="ident">init</span>() <span class="op">-></span> <span class="ident">History</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">history</span> <span class="op">=</span> <span class="ident">History</span>::<span class="ident">new</span>(); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">history</span>.<span class="ident">add</span>(<span class="string">"line1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">history</span>.<span class="ident">add</span>(<span class="string">"line2"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">history</span>.<span class="ident">add</span>(<span class="string">"line3"</span>)); |
| <span class="ident">history</span> |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">new</span>() { |
| <span class="kw">let</span> <span class="ident">history</span> <span class="op">=</span> <span class="ident">History</span>::<span class="ident">new</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">history</span>.<span class="ident">entries</span>.<span class="ident">len</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">add</span>() { |
| <span class="kw">let</span> <span class="ident">config</span> <span class="op">=</span> <span class="ident">Config</span>::<span class="ident">builder</span>().<span class="ident">history_ignore_space</span>(<span class="bool-val">true</span>).<span class="ident">build</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">history</span> <span class="op">=</span> <span class="ident">History</span>::<span class="ident">with_config</span>(<span class="ident">config</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">config</span>.<span class="ident">max_history_size</span>(), <span class="ident">history</span>.<span class="ident">max_len</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">history</span>.<span class="ident">add</span>(<span class="string">"line1"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">history</span>.<span class="ident">add</span>(<span class="string">"line2"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">history</span>.<span class="ident">add</span>(<span class="string">"line2"</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">history</span>.<span class="ident">add</span>(<span class="string">""</span>)); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">history</span>.<span class="ident">add</span>(<span class="string">" line3"</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">set_max_len</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">history</span> <span class="op">=</span> <span class="ident">init</span>(); |
| <span class="ident">history</span>.<span class="ident">set_max_len</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">1</span>, <span class="ident">history</span>.<span class="ident">entries</span>.<span class="ident">len</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="string">"line3"</span>.<span class="ident">to_string</span>()), <span class="ident">history</span>.<span class="ident">last</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">save</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">history</span> <span class="op">=</span> <span class="ident">init</span>(); |
| <span class="kw">let</span> <span class="ident">td</span> <span class="op">=</span> <span class="ident">tempdir</span>::<span class="ident">TempDir</span>::<span class="ident">new_in</span>(<span class="kw-2">&</span><span class="ident">Path</span>::<span class="ident">new</span>(<span class="string">"."</span>), <span class="string">"histo"</span>).<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> <span class="ident">history_path</span> <span class="op">=</span> <span class="ident">td</span>.<span class="ident">path</span>().<span class="ident">join</span>(<span class="string">".history"</span>); |
| |
| <span class="ident">history</span>.<span class="ident">save</span>(<span class="kw-2">&</span><span class="ident">history_path</span>).<span class="ident">unwrap</span>(); |
| <span class="ident">history</span>.<span class="ident">load</span>(<span class="kw-2">&</span><span class="ident">history_path</span>).<span class="ident">unwrap</span>(); |
| <span class="ident">td</span>.<span class="ident">close</span>().<span class="ident">unwrap</span>(); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">search</span>() { |
| <span class="kw">let</span> <span class="ident">history</span> <span class="op">=</span> <span class="ident">init</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">""</span>, <span class="number">0</span>, <span class="ident">Direction</span>::<span class="ident">Forward</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"none"</span>, <span class="number">0</span>, <span class="ident">Direction</span>::<span class="ident">Forward</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line"</span>, <span class="number">3</span>, <span class="ident">Direction</span>::<span class="ident">Forward</span>)); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line"</span>, <span class="number">0</span>, <span class="ident">Direction</span>::<span class="ident">Forward</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line"</span>, <span class="number">1</span>, <span class="ident">Direction</span>::<span class="ident">Forward</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line3"</span>, <span class="number">1</span>, <span class="ident">Direction</span>::<span class="ident">Forward</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">reverse_search</span>() { |
| <span class="kw">let</span> <span class="ident">history</span> <span class="op">=</span> <span class="ident">init</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">""</span>, <span class="number">2</span>, <span class="ident">Direction</span>::<span class="ident">Reverse</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"none"</span>, <span class="number">2</span>, <span class="ident">Direction</span>::<span class="ident">Reverse</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line"</span>, <span class="number">3</span>, <span class="ident">Direction</span>::<span class="ident">Reverse</span>)); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line"</span>, <span class="number">2</span>, <span class="ident">Direction</span>::<span class="ident">Reverse</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line"</span>, <span class="number">1</span>, <span class="ident">Direction</span>::<span class="ident">Reverse</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), <span class="ident">history</span>.<span class="ident">search</span>(<span class="string">"line1"</span>, <span class="number">1</span>, <span class="ident">Direction</span>::<span class="ident">Reverse</span>)); |
| } |
| } |
| </pre> |
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