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</pre><pre class="rust ">
<span class="kw">use</span> <span class="ident">http</span>::<span class="ident">Uri</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">const</span> <span class="ident">GEN_DELIMS</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b&quot;:/?#[]@&quot;</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">const</span> <span class="ident">SUB_DELIMS_WITHOUT_QS</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b&quot;!$&#39;()*,&quot;</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">const</span> <span class="ident">SUB_DELIMS</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b&quot;!$&#39;()*,+?=;&quot;</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">const</span> <span class="ident">RESERVED</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b&quot;:/?#[]@!$&#39;()*,+?=;&quot;</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">const</span> <span class="ident">UNRESERVED</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b&quot;abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ
1234567890
-._~&quot;</span>;
<span class="kw">const</span> <span class="ident">ALLOWED</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b&quot;abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ
1234567890
-._~
!$&#39;()*,&quot;</span>;
<span class="kw">const</span> <span class="ident">QS</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b&quot;+&amp;=;b&quot;</span>;
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">bit_at</span>(<span class="ident">array</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>], <span class="ident">ch</span>: <span class="ident">u8</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
<span class="ident">array</span>[(<span class="ident">ch</span> <span class="op">&gt;&gt;</span> <span class="number">3</span>) <span class="kw">as</span> <span class="ident">usize</span>] <span class="op">&amp;</span> (<span class="number">1</span> <span class="op">&lt;&lt;</span> (<span class="ident">ch</span> <span class="op">&amp;</span> <span class="number">7</span>)) <span class="op">!=</span> <span class="number">0</span>
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">set_bit</span>(<span class="ident">array</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>], <span class="ident">ch</span>: <span class="ident">u8</span>) {
<span class="ident">array</span>[(<span class="ident">ch</span> <span class="op">&gt;&gt;</span> <span class="number">3</span>) <span class="kw">as</span> <span class="ident">usize</span>] <span class="op">|=</span> <span class="number">1</span> <span class="op">&lt;&lt;</span> (<span class="ident">ch</span> <span class="op">&amp;</span> <span class="number">7</span>)
}
<span class="macro">lazy_static</span><span class="macro">!</span> {
<span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">DEFAULT_QUOTER</span>: <span class="ident">Quoter</span> <span class="op">=</span> { <span class="ident">Quoter</span>::<span class="ident">new</span>(<span class="string">b&quot;@:&quot;</span>, <span class="string">b&quot;/+&quot;</span>) };
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>, <span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct</span> <span class="ident">Url</span> {
<span class="ident">uri</span>: <span class="ident">Uri</span>,
<span class="ident">path</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Rc</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;&gt;</span>,
}
<span class="kw">impl</span> <span class="ident">Url</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">uri</span>: <span class="ident">Uri</span>) <span class="op">-&gt;</span> <span class="ident">Url</span> {
<span class="kw">let</span> <span class="ident">path</span> <span class="op">=</span> <span class="ident">DEFAULT_QUOTER</span>.<span class="ident">requote</span>(<span class="ident">uri</span>.<span class="ident">path</span>().<span class="ident">as_bytes</span>());
<span class="ident">Url</span> { <span class="ident">uri</span>, <span class="ident">path</span> }
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">uri</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="kw-2">&amp;</span><span class="ident">Uri</span> {
<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">uri</span>
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">path</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="kw-2">&amp;</span><span class="ident">str</span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">s</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">path</span> {
<span class="ident">s</span>
} <span class="kw">else</span> {
<span class="self">self</span>.<span class="ident">uri</span>.<span class="ident">path</span>()
}
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct</span> <span class="ident">Quoter</span> {
<span class="ident">safe_table</span>: [<span class="ident">u8</span>; <span class="number">16</span>],
<span class="ident">protected_table</span>: [<span class="ident">u8</span>; <span class="number">16</span>],
}
<span class="kw">impl</span> <span class="ident">Quoter</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">safe</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>], <span class="ident">protected</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>]) <span class="op">-&gt;</span> <span class="ident">Quoter</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">q</span> <span class="op">=</span> <span class="ident">Quoter</span> {
<span class="ident">safe_table</span>: [<span class="number">0</span>; <span class="number">16</span>],
<span class="ident">protected_table</span>: [<span class="number">0</span>; <span class="number">16</span>],
};
<span class="comment">// prepare safe table</span>
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">128</span> {
<span class="kw">if</span> <span class="ident">ALLOWED</span>.<span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="ident">i</span>) {
<span class="ident">set_bit</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">q</span>.<span class="ident">safe_table</span>, <span class="ident">i</span>);
}
<span class="kw">if</span> <span class="ident">QS</span>.<span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="ident">i</span>) {
<span class="ident">set_bit</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">q</span>.<span class="ident">safe_table</span>, <span class="ident">i</span>);
}
}
<span class="kw">for</span> <span class="ident">ch</span> <span class="kw">in</span> <span class="ident">safe</span> {
<span class="ident">set_bit</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">q</span>.<span class="ident">safe_table</span>, <span class="kw-2">*</span><span class="ident">ch</span>)
}
<span class="comment">// prepare protected table</span>
<span class="kw">for</span> <span class="ident">ch</span> <span class="kw">in</span> <span class="ident">protected</span> {
<span class="ident">set_bit</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">q</span>.<span class="ident">safe_table</span>, <span class="kw-2">*</span><span class="ident">ch</span>);
<span class="ident">set_bit</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">q</span>.<span class="ident">protected_table</span>, <span class="kw-2">*</span><span class="ident">ch</span>);
}
<span class="ident">q</span>
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">requote</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">val</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>]) <span class="op">-&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Rc</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;&gt;</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">has_pct</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">pct</span> <span class="op">=</span> [<span class="string">b&#39;%&#39;</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">idx</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cloned</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">u8</span><span class="op">&gt;&gt;</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">val</span>.<span class="ident">len</span>();
<span class="kw">while</span> <span class="ident">idx</span> <span class="op">&lt;</span> <span class="ident">len</span> {
<span class="kw">let</span> <span class="ident">ch</span> <span class="op">=</span> <span class="ident">val</span>[<span class="ident">idx</span>];
<span class="kw">if</span> <span class="ident">has_pct</span> <span class="op">!=</span> <span class="number">0</span> {
<span class="ident">pct</span>[<span class="ident">has_pct</span>] <span class="op">=</span> <span class="ident">val</span>[<span class="ident">idx</span>];
<span class="ident">has_pct</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="kw">if</span> <span class="ident">has_pct</span> <span class="op">==</span> <span class="number">3</span> {
<span class="ident">has_pct</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">let</span> <span class="ident">buf</span> <span class="op">=</span> <span class="ident">cloned</span>.<span class="ident">as_mut</span>().<span class="ident">unwrap</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">restore_ch</span>(<span class="ident">pct</span>[<span class="number">1</span>], <span class="ident">pct</span>[<span class="number">2</span>]) {
<span class="kw">if</span> <span class="ident">ch</span> <span class="op">&lt;</span> <span class="number">128</span> {
<span class="kw">if</span> <span class="ident">bit_at</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">protected_table</span>, <span class="ident">ch</span>) {
<span class="ident">buf</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&amp;</span><span class="ident">pct</span>);
<span class="ident">idx</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="kw">continue</span>;
}
<span class="kw">if</span> <span class="ident">bit_at</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">safe_table</span>, <span class="ident">ch</span>) {
<span class="ident">buf</span>.<span class="ident">push</span>(<span class="ident">ch</span>);
<span class="ident">idx</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="kw">continue</span>;
}
}
<span class="ident">buf</span>.<span class="ident">push</span>(<span class="ident">ch</span>);
} <span class="kw">else</span> {
<span class="ident">buf</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&amp;</span><span class="ident">pct</span>[..]);
}
}
} <span class="kw">else</span> <span class="kw">if</span> <span class="ident">ch</span> <span class="op">==</span> <span class="string">b&#39;%&#39;</span> {
<span class="ident">has_pct</span> <span class="op">=</span> <span class="number">1</span>;
<span class="kw">if</span> <span class="ident">cloned</span>.<span class="ident">is_none</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">c</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="ident">len</span>);
<span class="ident">c</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&amp;</span><span class="ident">val</span>[..<span class="ident">idx</span>]);
<span class="ident">cloned</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>);
}
} <span class="kw">else</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">cloned</span>) <span class="op">=</span> <span class="ident">cloned</span> {
<span class="ident">cloned</span>.<span class="ident">push</span>(<span class="ident">ch</span>)
}
<span class="ident">idx</span> <span class="op">+=</span> <span class="number">1</span>;
}
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">data</span>) <span class="op">=</span> <span class="ident">cloned</span> {
<span class="comment">// Unsafe: we get data from http::Uri, which does utf-8 checks already</span>
<span class="comment">// this code only decodes valid pct encoded values</span>
<span class="prelude-val">Some</span>(<span class="kw">unsafe</span> { <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="ident">String</span>::<span class="ident">from_utf8_unchecked</span>(<span class="ident">data</span>)) })
} <span class="kw">else</span> {
<span class="prelude-val">None</span>
}
}
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from_hex</span>(<span class="ident">v</span>: <span class="ident">u8</span>) <span class="op">-&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">u8</span><span class="op">&gt;</span> {
<span class="kw">if</span> <span class="ident">v</span> <span class="op">&gt;=</span> <span class="string">b&#39;0&#39;</span> <span class="op">&amp;&amp;</span> <span class="ident">v</span> <span class="op">&lt;=</span> <span class="string">b&#39;9&#39;</span> {
<span class="prelude-val">Some</span>(<span class="ident">v</span> <span class="op">-</span> <span class="number">0x30</span>) <span class="comment">// ord(&#39;0&#39;) == 0x30</span>
} <span class="kw">else</span> <span class="kw">if</span> <span class="ident">v</span> <span class="op">&gt;=</span> <span class="string">b&#39;A&#39;</span> <span class="op">&amp;&amp;</span> <span class="ident">v</span> <span class="op">&lt;=</span> <span class="string">b&#39;F&#39;</span> {
<span class="prelude-val">Some</span>(<span class="ident">v</span> <span class="op">-</span> <span class="number">0x41</span> <span class="op">+</span> <span class="number">10</span>) <span class="comment">// ord(&#39;A&#39;) == 0x41</span>
} <span class="kw">else</span> <span class="kw">if</span> <span class="ident">v</span> <span class="op">&gt;</span> <span class="string">b&#39;a&#39;</span> <span class="op">&amp;&amp;</span> <span class="ident">v</span> <span class="op">&lt;=</span> <span class="string">b&#39;f&#39;</span> {
<span class="prelude-val">Some</span>(<span class="ident">v</span> <span class="op">-</span> <span class="number">0x61</span> <span class="op">+</span> <span class="number">10</span>) <span class="comment">// ord(&#39;a&#39;) == 0x61</span>
} <span class="kw">else</span> {
<span class="prelude-val">None</span>
}
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">restore_ch</span>(<span class="ident">d1</span>: <span class="ident">u8</span>, <span class="ident">d2</span>: <span class="ident">u8</span>) <span class="op">-&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">u8</span><span class="op">&gt;</span> {
<span class="ident">from_hex</span>(<span class="ident">d1</span>).<span class="ident">and_then</span>(<span class="op">|</span><span class="ident">d1</span><span class="op">|</span> <span class="ident">from_hex</span>(<span class="ident">d2</span>).<span class="ident">and_then</span>(<span class="kw">move</span> <span class="op">|</span><span class="ident">d2</span><span class="op">|</span> <span class="prelude-val">Some</span>(<span class="ident">d1</span> <span class="op">&lt;&lt;</span> <span class="number">4</span> <span class="op">|</span> <span class="ident">d2</span>)))
}
</pre>
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