Uttarayan Mondal
847 lines
60 KiB
HTML
847 lines
60 KiB
HTML
<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/fs0c131y/.local/share/cargo/registry/src/github.com-1ecc6299db9ec823/form_urlencoded-1.0.1/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../favicon.svg">
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|
||
<span id="413">413</span>
|
||
<span id="414">414</span>
|
||
<span id="415">415</span>
|
||
<span id="416">416</span>
|
||
<span id="417">417</span>
|
||
<span id="418">418</span>
|
||
<span id="419">419</span>
|
||
<span id="420">420</span>
|
||
</pre><div class="example-wrap"><pre class="rust ">
|
||
<span class="comment">// Copyright 2013-2016 The rust-url developers.</span>
|
||
<span class="comment">//</span>
|
||
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
|
||
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
|
||
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
|
||
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
|
||
<span class="comment">// except according to those terms.</span>
|
||
|
||
<span class="doccomment">//! Parser and serializer for the [`application/x-www-form-urlencoded` syntax](</span>
|
||
<span class="doccomment">//! http://url.spec.whatwg.org/#application/x-www-form-urlencoded),</span>
|
||
<span class="doccomment">//! as used by HTML forms.</span>
|
||
<span class="doccomment">//!</span>
|
||
<span class="doccomment">//! Converts between a string (such as an URL’s query string)</span>
|
||
<span class="doccomment">//! and a sequence of (name, value) pairs.</span>
|
||
|
||
<span class="attribute">#[<span class="ident">macro_use</span>]</span>
|
||
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">matches</span>;
|
||
|
||
<span class="kw">use</span> <span class="ident">percent_encoding</span>::{<span class="ident">percent_decode</span>, <span class="ident">percent_encode_byte</span>};
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">borrow</span>::{<span class="ident">Borrow</span>, <span class="ident">Cow</span>};
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">str</span>;
|
||
|
||
<span class="doccomment">/// Convert a byte string in the `application/x-www-form-urlencoded` syntax</span>
|
||
<span class="doccomment">/// into a iterator of (name, value) pairs.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Use `parse(input.as_bytes())` to parse a `&str` string.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// The names and values are percent-decoded. For instance, `%23first=%25try%25` will be</span>
|
||
<span class="doccomment">/// converted to `[("#first", "%try%")]`.</span>
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parse</span>(<span class="ident">input</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="ident">Parse</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span> {
|
||
<span class="ident">Parse</span> { <span class="ident">input</span> }
|
||
}
|
||
<span class="doccomment">/// The return type of `parse()`.</span>
|
||
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>)]</span>
|
||
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Parse</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
|
||
<span class="ident">input</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> [<span class="ident">u8</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">Parse</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="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">str</span><span class="op">></span>, <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">str</span><span class="op">></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="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="self">Self</span>::<span class="ident">Item</span><span class="op">></span> {
|
||
<span class="kw">loop</span> {
|
||
<span class="kw">if</span> <span class="self">self</span>.<span class="ident">input</span>.<span class="ident">is_empty</span>() {
|
||
<span class="kw">return</span> <span class="prelude-val">None</span>;
|
||
}
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">split2</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">input</span>.<span class="ident">splitn</span>(<span class="number">2</span>, <span class="op">|</span><span class="kw-2">&</span><span class="ident">b</span><span class="op">|</span> <span class="ident">b</span> <span class="op">=</span><span class="op">=</span> <span class="string">b'&'</span>);
|
||
<span class="kw">let</span> <span class="ident">sequence</span> <span class="op">=</span> <span class="ident">split2</span>.<span class="ident">next</span>().<span class="ident">unwrap</span>();
|
||
<span class="self">self</span>.<span class="ident">input</span> <span class="op">=</span> <span class="ident">split2</span>.<span class="ident">next</span>().<span class="ident">unwrap_or</span>(<span class="kw-2">&</span>[][..]);
|
||
<span class="kw">if</span> <span class="ident">sequence</span>.<span class="ident">is_empty</span>() {
|
||
<span class="kw">continue</span>;
|
||
}
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">split2</span> <span class="op">=</span> <span class="ident">sequence</span>.<span class="ident">splitn</span>(<span class="number">2</span>, <span class="op">|</span><span class="kw-2">&</span><span class="ident">b</span><span class="op">|</span> <span class="ident">b</span> <span class="op">=</span><span class="op">=</span> <span class="string">b'='</span>);
|
||
<span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">split2</span>.<span class="ident">next</span>().<span class="ident">unwrap</span>();
|
||
<span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> <span class="ident">split2</span>.<span class="ident">next</span>().<span class="ident">unwrap_or</span>(<span class="kw-2">&</span>[][..]);
|
||
<span class="kw">return</span> <span class="prelude-val">Some</span>((<span class="ident">decode</span>(<span class="ident">name</span>), <span class="ident">decode</span>(<span class="ident">value</span>)));
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">decode</span>(<span class="ident">input</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'_</span>, <span class="ident">str</span><span class="op">></span> {
|
||
<span class="kw">let</span> <span class="ident">replaced</span> <span class="op">=</span> <span class="ident">replace_plus</span>(<span class="ident">input</span>);
|
||
<span class="ident">decode_utf8_lossy</span>(<span class="kw">match</span> <span class="ident">percent_decode</span>(<span class="kw-2">&</span><span class="ident">replaced</span>).<span class="ident">into</span>() {
|
||
<span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="ident">vec</span>) <span class="op">=</span><span class="op">></span> <span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="ident">vec</span>),
|
||
<span class="ident">Cow</span>::<span class="ident">Borrowed</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="ident">replaced</span>,
|
||
})
|
||
}
|
||
|
||
<span class="doccomment">/// Replace b'+' with b' '</span>
|
||
<span class="kw">fn</span> <span class="ident">replace_plus</span>(<span class="ident">input</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'_</span>, [<span class="ident">u8</span>]<span class="op">></span> {
|
||
<span class="kw">match</span> <span class="ident">input</span>.<span class="ident">iter</span>().<span class="ident">position</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">b</span><span class="op">|</span> <span class="ident">b</span> <span class="op">=</span><span class="op">=</span> <span class="string">b'+'</span>) {
|
||
<span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="ident">Cow</span>::<span class="ident">Borrowed</span>(<span class="ident">input</span>),
|
||
<span class="prelude-val">Some</span>(<span class="ident">first_position</span>) <span class="op">=</span><span class="op">></span> {
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">replaced</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">to_owned</span>();
|
||
<span class="ident">replaced</span>[<span class="ident">first_position</span>] <span class="op">=</span> <span class="string">b' '</span>;
|
||
<span class="kw">for</span> <span class="ident">byte</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">replaced</span>[<span class="ident">first_position</span> <span class="op">+</span> <span class="number">1</span>..] {
|
||
<span class="kw">if</span> <span class="kw-2">*</span><span class="ident">byte</span> <span class="op">=</span><span class="op">=</span> <span class="string">b'+'</span> {
|
||
<span class="kw-2">*</span><span class="ident">byte</span> <span class="op">=</span> <span class="string">b' '</span>;
|
||
}
|
||
}
|
||
<span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="ident">replaced</span>)
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Parse</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
|
||
<span class="doccomment">/// Return a new iterator that yields pairs of `String` instead of pairs of `Cow<str>`.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_owned</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">ParseIntoOwned</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
|
||
<span class="ident">ParseIntoOwned</span> { <span class="ident">inner</span>: <span class="self">self</span> }
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Like `Parse`, but yields pairs of `String` instead of pairs of `Cow<str>`.</span>
|
||
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ParseIntoOwned</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
|
||
<span class="ident">inner</span>: <span class="ident">Parse</span><span class="op"><</span><span class="lifetime">'a</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">ParseIntoOwned</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="ident">String</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="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="self">Self</span>::<span class="ident">Item</span><span class="op">></span> {
|
||
<span class="self">self</span>.<span class="ident">inner</span>
|
||
.<span class="ident">next</span>()
|
||
.<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="ident">v</span>)<span class="op">|</span> (<span class="ident">k</span>.<span class="ident">into_owned</span>(), <span class="ident">v</span>.<span class="ident">into_owned</span>()))
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// The [`application/x-www-form-urlencoded` byte serializer](</span>
|
||
<span class="doccomment">/// https://url.spec.whatwg.org/#concept-urlencoded-byte-serializer).</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Return an iterator of `&str` slices.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">byte_serialize</span>(<span class="ident">input</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="ident">ByteSerialize</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span> {
|
||
<span class="ident">ByteSerialize</span> { <span class="ident">bytes</span>: <span class="ident">input</span> }
|
||
}
|
||
|
||
<span class="doccomment">/// Return value of `byte_serialize()`.</span>
|
||
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span>
|
||
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ByteSerialize</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
|
||
<span class="ident">bytes</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> [<span class="ident">u8</span>],
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">byte_serialized_unchanged</span>(<span class="ident">byte</span>: <span class="ident">u8</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> {
|
||
<span class="macro">matches</span><span class="macro">!</span>(<span class="ident">byte</span>, <span class="string">b'*'</span> <span class="op">|</span> <span class="string">b'-'</span> <span class="op">|</span> <span class="string">b'.'</span> <span class="op">|</span> <span class="string">b'0'</span> ..<span class="op">=</span> <span class="string">b'9'</span> <span class="op">|</span> <span class="string">b'A'</span> ..<span class="op">=</span> <span class="string">b'Z'</span> <span class="op">|</span> <span class="string">b'_'</span> <span class="op">|</span> <span class="string">b'a'</span> ..<span class="op">=</span> <span class="string">b'z'</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">ByteSerialize</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">str</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="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">str</span><span class="op">></span> {
|
||
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="kw-2">&</span><span class="ident">first</span>, <span class="ident">tail</span>)) <span class="op">=</span> <span class="self">self</span>.<span class="ident">bytes</span>.<span class="ident">split_first</span>() {
|
||
<span class="kw">if</span> <span class="op">!</span><span class="ident">byte_serialized_unchanged</span>(<span class="ident">first</span>) {
|
||
<span class="self">self</span>.<span class="ident">bytes</span> <span class="op">=</span> <span class="ident">tail</span>;
|
||
<span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="kw">if</span> <span class="ident">first</span> <span class="op">=</span><span class="op">=</span> <span class="string">b' '</span> {
|
||
<span class="string">"+"</span>
|
||
} <span class="kw">else</span> {
|
||
<span class="ident">percent_encode_byte</span>(<span class="ident">first</span>)
|
||
});
|
||
}
|
||
<span class="kw">let</span> <span class="ident">position</span> <span class="op">=</span> <span class="ident">tail</span>.<span class="ident">iter</span>().<span class="ident">position</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">b</span><span class="op">|</span> <span class="op">!</span><span class="ident">byte_serialized_unchanged</span>(<span class="ident">b</span>));
|
||
<span class="kw">let</span> (<span class="ident">unchanged_slice</span>, <span class="ident">remaining</span>) <span class="op">=</span> <span class="kw">match</span> <span class="ident">position</span> {
|
||
<span class="comment">// 1 for first_byte + i unchanged in tail</span>
|
||
<span class="prelude-val">Some</span>(<span class="ident">i</span>) <span class="op">=</span><span class="op">></span> <span class="self">self</span>.<span class="ident">bytes</span>.<span class="ident">split_at</span>(<span class="number">1</span> <span class="op">+</span> <span class="ident">i</span>),
|
||
<span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> (<span class="self">self</span>.<span class="ident">bytes</span>, <span class="kw-2">&</span>[][..]),
|
||
};
|
||
<span class="self">self</span>.<span class="ident">bytes</span> <span class="op">=</span> <span class="ident">remaining</span>;
|
||
<span class="comment">// This unsafe is appropriate because we have already checked these</span>
|
||
<span class="comment">// bytes in byte_serialized_unchanged, which checks for a subset</span>
|
||
<span class="comment">// of UTF-8. So we know these bytes are valid UTF-8, and doing</span>
|
||
<span class="comment">// another UTF-8 check would be wasteful.</span>
|
||
<span class="prelude-val">Some</span>(<span class="kw">unsafe</span> { <span class="ident">str</span>::<span class="ident">from_utf8_unchecked</span>(<span class="ident">unchanged_slice</span>) })
|
||
} <span class="kw">else</span> {
|
||
<span class="prelude-val">None</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="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="kw">if</span> <span class="self">self</span>.<span class="ident">bytes</span>.<span class="ident">is_empty</span>() {
|
||
(<span class="number">0</span>, <span class="prelude-val">Some</span>(<span class="number">0</span>))
|
||
} <span class="kw">else</span> {
|
||
(<span class="number">1</span>, <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">bytes</span>.<span class="ident">len</span>()))
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// The [`application/x-www-form-urlencoded` serializer](</span>
|
||
<span class="doccomment">/// https://url.spec.whatwg.org/#concept-urlencoded-serializer).</span>
|
||
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Serializer</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="ident">Target</span><span class="op">></span> {
|
||
<span class="ident">target</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>,
|
||
<span class="ident">start_position</span>: <span class="ident">usize</span>,
|
||
<span class="ident">encoding</span>: <span class="ident">EncodingOverride</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>,
|
||
}
|
||
|
||
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">Target</span> {
|
||
<span class="kw">fn</span> <span class="ident">as_mut_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span>;
|
||
<span class="kw">fn</span> <span class="ident">finish</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span>::<span class="ident">Finished</span>;
|
||
<span class="kw">type</span> <span class="ident">Finished</span>;
|
||
}
|
||
|
||
<span class="kw">impl</span> <span class="ident">Target</span> <span class="kw">for</span> <span class="ident">String</span> {
|
||
<span class="kw">fn</span> <span class="ident">as_mut_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span> {
|
||
<span class="self">self</span>
|
||
}
|
||
<span class="kw">fn</span> <span class="ident">finish</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
|
||
<span class="self">self</span>
|
||
}
|
||
<span class="kw">type</span> <span class="ident">Finished</span> <span class="op">=</span> <span class="self">Self</span>;
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Target</span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">String</span> {
|
||
<span class="kw">fn</span> <span class="ident">as_mut_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span> {
|
||
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="kw-2">*</span><span class="self">self</span>
|
||
}
|
||
<span class="kw">fn</span> <span class="ident">finish</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
|
||
<span class="self">self</span>
|
||
}
|
||
<span class="kw">type</span> <span class="ident">Finished</span> <span class="op">=</span> <span class="self">Self</span>;
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="ident">Target</span><span class="op">></span> <span class="ident">Serializer</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span> {
|
||
<span class="doccomment">/// Create a new `application/x-www-form-urlencoded` serializer for the given target.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// If the target is non-empty,</span>
|
||
<span class="doccomment">/// its content is assumed to already be in `application/x-www-form-urlencoded` syntax.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">target</span>: <span class="ident">T</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
|
||
<span class="self">Self</span>::<span class="ident">for_suffix</span>(<span class="ident">target</span>, <span class="number">0</span>)
|
||
}
|
||
|
||
<span class="doccomment">/// Create a new `application/x-www-form-urlencoded` serializer</span>
|
||
<span class="doccomment">/// for a suffix of the given target.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// If that suffix is non-empty,</span>
|
||
<span class="doccomment">/// its content is assumed to already be in `application/x-www-form-urlencoded` syntax.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">for_suffix</span>(<span class="kw-2">mut</span> <span class="ident">target</span>: <span class="ident">T</span>, <span class="ident">start_position</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
|
||
<span class="kw">if</span> <span class="ident">target</span>.<span class="ident">as_mut_string</span>().<span class="ident">len</span>() <span class="op"><</span> <span class="ident">start_position</span> {
|
||
<span class="macro">panic</span><span class="macro">!</span>(
|
||
<span class="string">"invalid length {} for target of length {}"</span>,
|
||
<span class="ident">start_position</span>,
|
||
<span class="ident">target</span>.<span class="ident">as_mut_string</span>().<span class="ident">len</span>()
|
||
);
|
||
}
|
||
|
||
<span class="ident">Serializer</span> {
|
||
<span class="ident">target</span>: <span class="prelude-val">Some</span>(<span class="ident">target</span>),
|
||
<span class="ident">start_position</span>,
|
||
<span class="ident">encoding</span>: <span class="prelude-val">None</span>,
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Remove any existing name/value pair.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Panics if called after `.finish()`.</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="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span> {
|
||
<span class="ident">string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">target</span>).<span class="ident">truncate</span>(<span class="self">self</span>.<span class="ident">start_position</span>);
|
||
<span class="self">self</span>
|
||
}
|
||
|
||
<span class="doccomment">/// Set the character encoding to be used for names and values before percent-encoding.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">encoding_override</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">new</span>: <span class="ident">EncodingOverride</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>) <span class="op">-</span><span class="op">></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">encoding</span> <span class="op">=</span> <span class="ident">new</span>;
|
||
<span class="self">self</span>
|
||
}
|
||
|
||
<span class="doccomment">/// Serialize and append a name/value pair.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Panics if called after `.finish()`.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">append_pair</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">value</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span> {
|
||
<span class="ident">append_pair</span>(
|
||
<span class="ident">string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">target</span>),
|
||
<span class="self">self</span>.<span class="ident">start_position</span>,
|
||
<span class="self">self</span>.<span class="ident">encoding</span>,
|
||
<span class="ident">name</span>,
|
||
<span class="ident">value</span>,
|
||
);
|
||
<span class="self">self</span>
|
||
}
|
||
|
||
<span class="doccomment">/// Serialize and append a name of parameter without any value.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Panics if called after `.finish()`.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">append_key_only</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span> {
|
||
<span class="ident">append_key_only</span>(
|
||
<span class="ident">string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">target</span>),
|
||
<span class="self">self</span>.<span class="ident">start_position</span>,
|
||
<span class="self">self</span>.<span class="ident">encoding</span>,
|
||
<span class="ident">name</span>,
|
||
);
|
||
<span class="self">self</span>
|
||
}
|
||
|
||
<span class="doccomment">/// Serialize and append a number of name/value pairs.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// This simply calls `append_pair` repeatedly.</span>
|
||
<span class="doccomment">/// This can be more convenient, so the user doesn’t need to introduce a block</span>
|
||
<span class="doccomment">/// to limit the scope of `Serializer`’s borrow of its string.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Panics if called after `.finish()`.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">extend_pairs</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">K</span>, <span class="ident">V</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">iter</span>: <span class="ident">I</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">I</span>: <span class="ident">IntoIterator</span>,
|
||
<span class="ident">I</span>::<span class="ident">Item</span>: <span class="ident">Borrow</span><span class="op"><</span>(<span class="ident">K</span>, <span class="ident">V</span>)<span class="op">></span>,
|
||
<span class="ident">K</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">str</span><span class="op">></span>,
|
||
<span class="ident">V</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">str</span><span class="op">></span>,
|
||
{
|
||
{
|
||
<span class="kw">let</span> <span class="ident">string</span> <span class="op">=</span> <span class="ident">string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">target</span>);
|
||
<span class="kw">for</span> <span class="ident">pair</span> <span class="kw">in</span> <span class="ident">iter</span> {
|
||
<span class="kw">let</span> <span class="kw-2">&</span>(<span class="kw-2">ref</span> <span class="ident">k</span>, <span class="kw-2">ref</span> <span class="ident">v</span>) <span class="op">=</span> <span class="ident">pair</span>.<span class="ident">borrow</span>();
|
||
<span class="ident">append_pair</span>(
|
||
<span class="ident">string</span>,
|
||
<span class="self">self</span>.<span class="ident">start_position</span>,
|
||
<span class="self">self</span>.<span class="ident">encoding</span>,
|
||
<span class="ident">k</span>.<span class="ident">as_ref</span>(),
|
||
<span class="ident">v</span>.<span class="ident">as_ref</span>(),
|
||
);
|
||
}
|
||
}
|
||
<span class="self">self</span>
|
||
}
|
||
|
||
<span class="doccomment">/// Serialize and append a number of names without values.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// This simply calls `append_key_only` repeatedly.</span>
|
||
<span class="doccomment">/// This can be more convenient, so the user doesn’t need to introduce a block</span>
|
||
<span class="doccomment">/// to limit the scope of `Serializer`’s borrow of its string.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Panics if called after `.finish()`.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">extend_keys_only</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">K</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">iter</span>: <span class="ident">I</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">Self</span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">I</span>: <span class="ident">IntoIterator</span>,
|
||
<span class="ident">I</span>::<span class="ident">Item</span>: <span class="ident">Borrow</span><span class="op"><</span><span class="ident">K</span><span class="op">></span>,
|
||
<span class="ident">K</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">str</span><span class="op">></span>,
|
||
{
|
||
{
|
||
<span class="kw">let</span> <span class="ident">string</span> <span class="op">=</span> <span class="ident">string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">target</span>);
|
||
<span class="kw">for</span> <span class="ident">key</span> <span class="kw">in</span> <span class="ident">iter</span> {
|
||
<span class="kw">let</span> <span class="ident">k</span> <span class="op">=</span> <span class="ident">key</span>.<span class="ident">borrow</span>().<span class="ident">as_ref</span>();
|
||
<span class="ident">append_key_only</span>(<span class="ident">string</span>, <span class="self">self</span>.<span class="ident">start_position</span>, <span class="self">self</span>.<span class="ident">encoding</span>, <span class="ident">k</span>);
|
||
}
|
||
}
|
||
<span class="self">self</span>
|
||
}
|
||
|
||
<span class="doccomment">/// If this serializer was constructed with a string, take and return that string.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// ```rust</span>
|
||
<span class="doccomment">/// use form_urlencoded;</span>
|
||
<span class="doccomment">/// let encoded: String = form_urlencoded::Serializer::new(String::new())</span>
|
||
<span class="doccomment">/// .append_pair("foo", "bar & baz")</span>
|
||
<span class="doccomment">/// .append_pair("saison", "Été+hiver")</span>
|
||
<span class="doccomment">/// .finish();</span>
|
||
<span class="doccomment">/// assert_eq!(encoded, "foo=bar+%26+baz&saison=%C3%89t%C3%A9%2Bhiver");</span>
|
||
<span class="doccomment">/// ```</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Panics if called more than once.</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">finish</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">T</span>::<span class="ident">Finished</span> {
|
||
<span class="self">self</span>.<span class="ident">target</span>
|
||
.<span class="ident">take</span>()
|
||
.<span class="ident">expect</span>(<span class="string">"url::form_urlencoded::Serializer double finish"</span>)
|
||
.<span class="ident">finish</span>()
|
||
}
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">append_separator_if_needed</span>(<span class="ident">string</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span>, <span class="ident">start_position</span>: <span class="ident">usize</span>) {
|
||
<span class="kw">if</span> <span class="ident">string</span>.<span class="ident">len</span>() <span class="op">></span> <span class="ident">start_position</span> {
|
||
<span class="ident">string</span>.<span class="ident">push</span>(<span class="string">'&'</span>)
|
||
}
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">string</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Target</span><span class="op">></span>(<span class="ident">target</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span> {
|
||
<span class="ident">target</span>
|
||
.<span class="ident">as_mut</span>()
|
||
.<span class="ident">expect</span>(<span class="string">"url::form_urlencoded::Serializer finished"</span>)
|
||
.<span class="ident">as_mut_string</span>()
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">append_pair</span>(
|
||
<span class="ident">string</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span>,
|
||
<span class="ident">start_position</span>: <span class="ident">usize</span>,
|
||
<span class="ident">encoding</span>: <span class="ident">EncodingOverride</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>,
|
||
<span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>,
|
||
<span class="ident">value</span>: <span class="kw-2">&</span><span class="ident">str</span>,
|
||
) {
|
||
<span class="ident">append_separator_if_needed</span>(<span class="ident">string</span>, <span class="ident">start_position</span>);
|
||
<span class="ident">append_encoded</span>(<span class="ident">name</span>, <span class="ident">string</span>, <span class="ident">encoding</span>);
|
||
<span class="ident">string</span>.<span class="ident">push</span>(<span class="string">'='</span>);
|
||
<span class="ident">append_encoded</span>(<span class="ident">value</span>, <span class="ident">string</span>, <span class="ident">encoding</span>);
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">append_key_only</span>(
|
||
<span class="ident">string</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span>,
|
||
<span class="ident">start_position</span>: <span class="ident">usize</span>,
|
||
<span class="ident">encoding</span>: <span class="ident">EncodingOverride</span>,
|
||
<span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>,
|
||
) {
|
||
<span class="ident">append_separator_if_needed</span>(<span class="ident">string</span>, <span class="ident">start_position</span>);
|
||
<span class="ident">append_encoded</span>(<span class="ident">name</span>, <span class="ident">string</span>, <span class="ident">encoding</span>);
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">append_encoded</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">string</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span>, <span class="ident">encoding</span>: <span class="ident">EncodingOverride</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>) {
|
||
<span class="ident">string</span>.<span class="ident">extend</span>(<span class="ident">byte_serialize</span>(<span class="kw-2">&</span><span class="ident">encode</span>(<span class="ident">encoding</span>, <span class="ident">s</span>)))
|
||
}
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">encode</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>(<span class="ident">encoding_override</span>: <span class="ident">EncodingOverride</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>, <span class="ident">input</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'a</span>, [<span class="ident">u8</span>]<span class="op">></span> {
|
||
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">o</span>) <span class="op">=</span> <span class="ident">encoding_override</span> {
|
||
<span class="kw">return</span> <span class="ident">o</span>(<span class="ident">input</span>);
|
||
}
|
||
<span class="ident">input</span>.<span class="ident">as_bytes</span>().<span class="ident">into</span>()
|
||
}
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">decode_utf8_lossy</span>(<span class="ident">input</span>: <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'_</span>, [<span class="ident">u8</span>]<span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'_</span>, <span class="ident">str</span><span class="op">></span> {
|
||
<span class="comment">// Note: This function is duplicated in `percent_encoding/lib.rs`.</span>
|
||
<span class="kw">match</span> <span class="ident">input</span> {
|
||
<span class="ident">Cow</span>::<span class="ident">Borrowed</span>(<span class="ident">bytes</span>) <span class="op">=</span><span class="op">></span> <span class="ident">String</span>::<span class="ident">from_utf8_lossy</span>(<span class="ident">bytes</span>),
|
||
<span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="ident">bytes</span>) <span class="op">=</span><span class="op">></span> {
|
||
<span class="kw">match</span> <span class="ident">String</span>::<span class="ident">from_utf8_lossy</span>(<span class="kw-2">&</span><span class="ident">bytes</span>) {
|
||
<span class="ident">Cow</span>::<span class="ident">Borrowed</span>(<span class="ident">utf8</span>) <span class="op">=</span><span class="op">></span> {
|
||
<span class="comment">// If from_utf8_lossy returns a Cow::Borrowed, then we can</span>
|
||
<span class="comment">// be sure our original bytes were valid UTF-8. This is because</span>
|
||
<span class="comment">// if the bytes were invalid UTF-8 from_utf8_lossy would have</span>
|
||
<span class="comment">// to allocate a new owned string to back the Cow so it could</span>
|
||
<span class="comment">// replace invalid bytes with a placeholder.</span>
|
||
|
||
<span class="comment">// First we do a debug_assert to confirm our description above.</span>
|
||
<span class="kw">let</span> <span class="ident">raw_utf8</span>: <span class="kw-2">*</span><span class="kw">const</span> [<span class="ident">u8</span>];
|
||
<span class="ident">raw_utf8</span> <span class="op">=</span> <span class="ident">utf8</span>.<span class="ident">as_bytes</span>();
|
||
<span class="macro">debug_assert</span><span class="macro">!</span>(<span class="ident">raw_utf8</span> <span class="op">=</span><span class="op">=</span> <span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">bytes</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> [<span class="ident">u8</span>]);
|
||
|
||
<span class="comment">// Given we know the original input bytes are valid UTF-8,</span>
|
||
<span class="comment">// and we have ownership of those bytes, we re-use them and</span>
|
||
<span class="comment">// return a Cow::Owned here.</span>
|
||
<span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="kw">unsafe</span> { <span class="ident">String</span>::<span class="ident">from_utf8_unchecked</span>(<span class="ident">bytes</span>) })
|
||
}
|
||
<span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="ident">s</span>) <span class="op">=</span><span class="op">></span> <span class="ident">Cow</span>::<span class="ident">Owned</span>(<span class="ident">s</span>),
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub</span> <span class="kw">type</span> <span class="ident">EncodingOverride</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></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="kw">dyn</span> <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Cow</span><span class="op"><</span><span class="lifetime">'_</span>, [<span class="ident">u8</span>]<span class="op">></span><span class="op">></span>;
|
||
</pre></div>
|
||
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