| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/form_urlencoded-1.1.0/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../form_urlencoded/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../form_urlencoded/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="comment">// Copyright 2013-2016 The rust-url developers. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| </span><span class="doccomment">//! Parser and serializer for the [`application/x-www-form-urlencoded` syntax]( |
| //! http://url.spec.whatwg.org/#application/x-www-form-urlencoded), |
| //! as used by HTML forms. |
| //! |
| //! Converts between a string (such as an URL’s query string) |
| //! and a sequence of (name, value) pairs. |
| |
| </span><span class="kw">use </span>percent_encoding::{percent_decode, percent_encode_byte}; |
| <span class="kw">use </span>std::borrow::{Borrow, Cow}; |
| <span class="kw">use </span>std::str; |
| |
| <span class="doccomment">/// Convert a byte string in the `application/x-www-form-urlencoded` syntax |
| /// into a iterator of (name, value) pairs. |
| /// |
| /// Use `parse(input.as_bytes())` to parse a `&str` string. |
| /// |
| /// The names and values are percent-decoded. For instance, `%23first=%25try%25` will be |
| /// converted to `[("#first", "%try%")]`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>parse(input: <span class="kw-2">&</span>[u8]) -> Parse<<span class="lifetime">'_</span>> { |
| Parse { input } |
| } |
| <span class="doccomment">/// The return type of `parse()`. |
| </span><span class="attribute">#[derive(Copy, Clone)] |
| </span><span class="kw">pub struct </span>Parse<<span class="lifetime">'a</span>> { |
| input: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8], |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Iterator <span class="kw">for </span>Parse<<span class="lifetime">'a</span>> { |
| <span class="kw">type </span>Item = (Cow<<span class="lifetime">'a</span>, str>, Cow<<span class="lifetime">'a</span>, str>); |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="kw">loop </span>{ |
| <span class="kw">if </span><span class="self">self</span>.input.is_empty() { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="kw">let </span><span class="kw-2">mut </span>split2 = <span class="self">self</span>.input.splitn(<span class="number">2</span>, |<span class="kw-2">&</span>b| b == <span class="string">b'&'</span>); |
| <span class="kw">let </span>sequence = split2.next().unwrap(); |
| <span class="self">self</span>.input = split2.next().unwrap_or(<span class="kw-2">&</span>[][..]); |
| <span class="kw">if </span>sequence.is_empty() { |
| <span class="kw">continue</span>; |
| } |
| <span class="kw">let </span><span class="kw-2">mut </span>split2 = sequence.splitn(<span class="number">2</span>, |<span class="kw-2">&</span>b| b == <span class="string">b'='</span>); |
| <span class="kw">let </span>name = split2.next().unwrap(); |
| <span class="kw">let </span>value = split2.next().unwrap_or(<span class="kw-2">&</span>[][..]); |
| <span class="kw">return </span><span class="prelude-val">Some</span>((decode(name), decode(value))); |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>decode(input: <span class="kw-2">&</span>[u8]) -> Cow<<span class="lifetime">'_</span>, str> { |
| <span class="kw">let </span>replaced = replace_plus(input); |
| decode_utf8_lossy(<span class="kw">match </span>percent_decode(<span class="kw-2">&</span>replaced).into() { |
| Cow::Owned(vec) => Cow::Owned(vec), |
| Cow::Borrowed(<span class="kw">_</span>) => replaced, |
| }) |
| } |
| |
| <span class="doccomment">/// Replace b'+' with b' ' |
| </span><span class="kw">fn </span>replace_plus(input: <span class="kw-2">&</span>[u8]) -> Cow<<span class="lifetime">'_</span>, [u8]> { |
| <span class="kw">match </span>input.iter().position(|<span class="kw-2">&</span>b| b == <span class="string">b'+'</span>) { |
| <span class="prelude-val">None </span>=> Cow::Borrowed(input), |
| <span class="prelude-val">Some</span>(first_position) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>replaced = input.to_owned(); |
| replaced[first_position] = <span class="string">b' '</span>; |
| <span class="kw">for </span>byte <span class="kw">in </span><span class="kw-2">&mut </span>replaced[first_position + <span class="number">1</span>..] { |
| <span class="kw">if </span><span class="kw-2">*</span>byte == <span class="string">b'+' </span>{ |
| <span class="kw-2">*</span>byte = <span class="string">b' '</span>; |
| } |
| } |
| Cow::Owned(replaced) |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Parse<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// Return a new iterator that yields pairs of `String` instead of pairs of `Cow<str>`. |
| </span><span class="kw">pub fn </span>into_owned(<span class="self">self</span>) -> ParseIntoOwned<<span class="lifetime">'a</span>> { |
| ParseIntoOwned { inner: <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 struct </span>ParseIntoOwned<<span class="lifetime">'a</span>> { |
| inner: Parse<<span class="lifetime">'a</span>>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Iterator <span class="kw">for </span>ParseIntoOwned<<span class="lifetime">'a</span>> { |
| <span class="kw">type </span>Item = (String, String); |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="self">self</span>.inner |
| .next() |
| .map(|(k, v)| (k.into_owned(), v.into_owned())) |
| } |
| } |
| |
| <span class="doccomment">/// The [`application/x-www-form-urlencoded` byte serializer]( |
| /// https://url.spec.whatwg.org/#concept-urlencoded-byte-serializer). |
| /// |
| /// Return an iterator of `&str` slices. |
| </span><span class="kw">pub fn </span>byte_serialize(input: <span class="kw-2">&</span>[u8]) -> ByteSerialize<<span class="lifetime">'_</span>> { |
| ByteSerialize { bytes: input } |
| } |
| |
| <span class="doccomment">/// Return value of `byte_serialize()`. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>ByteSerialize<<span class="lifetime">'a</span>> { |
| bytes: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8], |
| } |
| |
| <span class="kw">fn </span>byte_serialized_unchanged(byte: u8) -> bool { |
| <span class="macro">matches!</span>(byte, <span class="string">b'*' </span>| <span class="string">b'-' </span>| <span class="string">b'.' </span>| <span class="string">b'0' </span>..= <span class="string">b'9' </span>| <span class="string">b'A' </span>..= <span class="string">b'Z' </span>| <span class="string">b'_' </span>| <span class="string">b'a' </span>..= <span class="string">b'z'</span>) |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Iterator <span class="kw">for </span>ByteSerialize<<span class="lifetime">'a</span>> { |
| <span class="kw">type </span>Item = <span class="kw-2">&</span><span class="lifetime">'a </span>str; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'a </span>str> { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>((<span class="kw-2">&</span>first, tail)) = <span class="self">self</span>.bytes.split_first() { |
| <span class="kw">if </span>!byte_serialized_unchanged(first) { |
| <span class="self">self</span>.bytes = tail; |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="kw">if </span>first == <span class="string">b' ' </span>{ |
| <span class="string">"+" |
| </span>} <span class="kw">else </span>{ |
| percent_encode_byte(first) |
| }); |
| } |
| <span class="kw">let </span>position = tail.iter().position(|<span class="kw-2">&</span>b| !byte_serialized_unchanged(b)); |
| <span class="kw">let </span>(unchanged_slice, remaining) = <span class="kw">match </span>position { |
| <span class="comment">// 1 for first_byte + i unchanged in tail |
| </span><span class="prelude-val">Some</span>(i) => <span class="self">self</span>.bytes.split_at(<span class="number">1 </span>+ i), |
| <span class="prelude-val">None </span>=> (<span class="self">self</span>.bytes, <span class="kw-2">&</span>[][..]), |
| }; |
| <span class="self">self</span>.bytes = remaining; |
| <span class="comment">// This unsafe is appropriate because we have already checked these |
| // bytes in byte_serialized_unchanged, which checks for a subset |
| // of UTF-8. So we know these bytes are valid UTF-8, and doing |
| // another UTF-8 check would be wasteful. |
| </span><span class="prelude-val">Some</span>(<span class="kw">unsafe </span>{ str::from_utf8_unchecked(unchanged_slice) }) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { |
| <span class="kw">if </span><span class="self">self</span>.bytes.is_empty() { |
| (<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>.bytes.len())) |
| } |
| } |
| } |
| |
| <span class="doccomment">/// The [`application/x-www-form-urlencoded` serializer]( |
| /// https://url.spec.whatwg.org/#concept-urlencoded-serializer). |
| </span><span class="kw">pub struct </span>Serializer<<span class="lifetime">'a</span>, T: Target> { |
| target: <span class="prelude-ty">Option</span><T>, |
| start_position: usize, |
| encoding: EncodingOverride<<span class="lifetime">'a</span>>, |
| } |
| |
| <span class="kw">pub trait </span>Target { |
| <span class="kw">fn </span>as_mut_string(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>String; |
| <span class="kw">fn </span>finish(<span class="self">self</span>) -> <span class="self">Self</span>::Finished; |
| <span class="kw">type </span>Finished; |
| } |
| |
| <span class="kw">impl </span>Target <span class="kw">for </span>String { |
| <span class="kw">fn </span>as_mut_string(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>String { |
| <span class="self">self |
| </span>} |
| <span class="kw">fn </span>finish(<span class="self">self</span>) -> <span class="self">Self </span>{ |
| <span class="self">self |
| </span>} |
| <span class="kw">type </span>Finished = <span class="self">Self</span>; |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Target <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>String { |
| <span class="kw">fn </span>as_mut_string(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>String { |
| <span class="kw-2">&mut **</span><span class="self">self |
| </span>} |
| <span class="kw">fn </span>finish(<span class="self">self</span>) -> <span class="self">Self </span>{ |
| <span class="self">self |
| </span>} |
| <span class="kw">type </span>Finished = <span class="self">Self</span>; |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Target> Serializer<<span class="lifetime">'a</span>, T> { |
| <span class="doccomment">/// Create a new `application/x-www-form-urlencoded` serializer for the given target. |
| /// |
| /// If the target is non-empty, |
| /// its content is assumed to already be in `application/x-www-form-urlencoded` syntax. |
| </span><span class="kw">pub fn </span>new(target: T) -> <span class="self">Self </span>{ |
| <span class="self">Self</span>::for_suffix(target, <span class="number">0</span>) |
| } |
| |
| <span class="doccomment">/// Create a new `application/x-www-form-urlencoded` serializer |
| /// for a suffix of the given target. |
| /// |
| /// If that suffix is non-empty, |
| /// its content is assumed to already be in `application/x-www-form-urlencoded` syntax. |
| </span><span class="kw">pub fn </span>for_suffix(<span class="kw-2">mut </span>target: T, start_position: usize) -> <span class="self">Self </span>{ |
| <span class="kw">if </span>target.as_mut_string().len() < start_position { |
| <span class="macro">panic!</span>( |
| <span class="string">"invalid length {} for target of length {}"</span>, |
| start_position, |
| target.as_mut_string().len() |
| ); |
| } |
| |
| Serializer { |
| target: <span class="prelude-val">Some</span>(target), |
| start_position, |
| encoding: <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Remove any existing name/value pair. |
| /// |
| /// Panics if called after `.finish()`. |
| </span><span class="kw">pub fn </span>clear(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| string(<span class="kw-2">&mut </span><span class="self">self</span>.target).truncate(<span class="self">self</span>.start_position); |
| <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 fn </span>encoding_override(<span class="kw-2">&mut </span><span class="self">self</span>, new: EncodingOverride<<span class="lifetime">'a</span>>) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| <span class="self">self</span>.encoding = new; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Serialize and append a name/value pair. |
| /// |
| /// Panics if called after `.finish()`. |
| </span><span class="kw">pub fn </span>append_pair(<span class="kw-2">&mut </span><span class="self">self</span>, name: <span class="kw-2">&</span>str, value: <span class="kw-2">&</span>str) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| append_pair( |
| string(<span class="kw-2">&mut </span><span class="self">self</span>.target), |
| <span class="self">self</span>.start_position, |
| <span class="self">self</span>.encoding, |
| name, |
| value, |
| ); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Serialize and append a name of parameter without any value. |
| /// |
| /// Panics if called after `.finish()`. |
| </span><span class="kw">pub fn </span>append_key_only(<span class="kw-2">&mut </span><span class="self">self</span>, name: <span class="kw-2">&</span>str) -> <span class="kw-2">&mut </span><span class="self">Self </span>{ |
| append_key_only( |
| string(<span class="kw-2">&mut </span><span class="self">self</span>.target), |
| <span class="self">self</span>.start_position, |
| <span class="self">self</span>.encoding, |
| name, |
| ); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Serialize and append a number of name/value pairs. |
| /// |
| /// This simply calls `append_pair` repeatedly. |
| /// This can be more convenient, so the user doesn’t need to introduce a block |
| /// to limit the scope of `Serializer`’s borrow of its string. |
| /// |
| /// Panics if called after `.finish()`. |
| </span><span class="kw">pub fn </span>extend_pairs<I, K, V>(<span class="kw-2">&mut </span><span class="self">self</span>, iter: I) -> <span class="kw-2">&mut </span><span class="self">Self |
| </span><span class="kw">where |
| </span>I: IntoIterator, |
| I::Item: Borrow<(K, V)>, |
| K: AsRef<str>, |
| V: AsRef<str>, |
| { |
| { |
| <span class="kw">let </span>string = string(<span class="kw-2">&mut </span><span class="self">self</span>.target); |
| <span class="kw">for </span>pair <span class="kw">in </span>iter { |
| <span class="kw">let </span><span class="kw-2">&</span>(<span class="kw-2">ref </span>k, <span class="kw-2">ref </span>v) = pair.borrow(); |
| append_pair( |
| string, |
| <span class="self">self</span>.start_position, |
| <span class="self">self</span>.encoding, |
| k.as_ref(), |
| v.as_ref(), |
| ); |
| } |
| } |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Serialize and append a number of names without values. |
| /// |
| /// This simply calls `append_key_only` repeatedly. |
| /// This can be more convenient, so the user doesn’t need to introduce a block |
| /// to limit the scope of `Serializer`’s borrow of its string. |
| /// |
| /// Panics if called after `.finish()`. |
| </span><span class="kw">pub fn </span>extend_keys_only<I, K>(<span class="kw-2">&mut </span><span class="self">self</span>, iter: I) -> <span class="kw-2">&mut </span><span class="self">Self |
| </span><span class="kw">where |
| </span>I: IntoIterator, |
| I::Item: Borrow<K>, |
| K: AsRef<str>, |
| { |
| { |
| <span class="kw">let </span>string = string(<span class="kw-2">&mut </span><span class="self">self</span>.target); |
| <span class="kw">for </span>key <span class="kw">in </span>iter { |
| <span class="kw">let </span>k = key.borrow().as_ref(); |
| append_key_only(string, <span class="self">self</span>.start_position, <span class="self">self</span>.encoding, k); |
| } |
| } |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// If this serializer was constructed with a string, take and return that string. |
| /// |
| /// ```rust |
| /// use form_urlencoded; |
| /// let encoded: String = form_urlencoded::Serializer::new(String::new()) |
| /// .append_pair("foo", "bar & baz") |
| /// .append_pair("saison", "Été+hiver") |
| /// .finish(); |
| /// assert_eq!(encoded, "foo=bar+%26+baz&saison=%C3%89t%C3%A9%2Bhiver"); |
| /// ``` |
| /// |
| /// Panics if called more than once. |
| </span><span class="kw">pub fn </span>finish(<span class="kw-2">&mut </span><span class="self">self</span>) -> T::Finished { |
| <span class="self">self</span>.target |
| .take() |
| .expect(<span class="string">"url::form_urlencoded::Serializer double finish"</span>) |
| .finish() |
| } |
| } |
| |
| <span class="kw">fn </span>append_separator_if_needed(string: <span class="kw-2">&mut </span>String, start_position: usize) { |
| <span class="kw">if </span>string.len() > start_position { |
| string.push(<span class="string">'&'</span>) |
| } |
| } |
| |
| <span class="kw">fn </span>string<T: Target>(target: <span class="kw-2">&mut </span><span class="prelude-ty">Option</span><T>) -> <span class="kw-2">&mut </span>String { |
| target |
| .as_mut() |
| .expect(<span class="string">"url::form_urlencoded::Serializer finished"</span>) |
| .as_mut_string() |
| } |
| |
| <span class="kw">fn </span>append_pair( |
| string: <span class="kw-2">&mut </span>String, |
| start_position: usize, |
| encoding: EncodingOverride<<span class="lifetime">'_</span>>, |
| name: <span class="kw-2">&</span>str, |
| value: <span class="kw-2">&</span>str, |
| ) { |
| append_separator_if_needed(string, start_position); |
| append_encoded(name, string, encoding); |
| string.push(<span class="string">'='</span>); |
| append_encoded(value, string, encoding); |
| } |
| |
| <span class="kw">fn </span>append_key_only( |
| string: <span class="kw-2">&mut </span>String, |
| start_position: usize, |
| encoding: EncodingOverride, |
| name: <span class="kw-2">&</span>str, |
| ) { |
| append_separator_if_needed(string, start_position); |
| append_encoded(name, string, encoding); |
| } |
| |
| <span class="kw">fn </span>append_encoded(s: <span class="kw-2">&</span>str, string: <span class="kw-2">&mut </span>String, encoding: EncodingOverride<<span class="lifetime">'_</span>>) { |
| string.extend(byte_serialize(<span class="kw-2">&</span>encode(encoding, s))) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>encode<<span class="lifetime">'a</span>>(encoding_override: EncodingOverride<<span class="lifetime">'_</span>>, input: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> Cow<<span class="lifetime">'a</span>, [u8]> { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(o) = encoding_override { |
| <span class="kw">return </span>o(input); |
| } |
| input.as_bytes().into() |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>decode_utf8_lossy(input: Cow<<span class="lifetime">'_</span>, [u8]>) -> Cow<<span class="lifetime">'_</span>, str> { |
| <span class="comment">// Note: This function is duplicated in `percent_encoding/lib.rs`. |
| </span><span class="kw">match </span>input { |
| Cow::Borrowed(bytes) => String::from_utf8_lossy(bytes), |
| Cow::Owned(bytes) => { |
| <span class="kw">match </span>String::from_utf8_lossy(<span class="kw-2">&</span>bytes) { |
| Cow::Borrowed(utf8) => { |
| <span class="comment">// If from_utf8_lossy returns a Cow::Borrowed, then we can |
| // be sure our original bytes were valid UTF-8. This is because |
| // if the bytes were invalid UTF-8 from_utf8_lossy would have |
| // to allocate a new owned string to back the Cow so it could |
| // replace invalid bytes with a placeholder. |
| |
| // First we do a debug_assert to confirm our description above. |
| </span><span class="kw">let </span>raw_utf8: <span class="kw-2">*const </span>[u8] = utf8.as_bytes(); |
| <span class="macro">debug_assert!</span>(raw_utf8 == <span class="kw-2">&*</span>bytes <span class="kw">as </span><span class="kw-2">*const </span>[u8]); |
| |
| <span class="comment">// Given we know the original input bytes are valid UTF-8, |
| // and we have ownership of those bytes, we re-use them and |
| // return a Cow::Owned here. |
| </span>Cow::Owned(<span class="kw">unsafe </span>{ String::from_utf8_unchecked(bytes) }) |
| } |
| Cow::Owned(s) => Cow::Owned(s), |
| } |
| } |
| } |
| } |
| |
| <span class="kw">pub type </span>EncodingOverride<<span class="lifetime">'a</span>> = <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw">dyn </span>Fn(<span class="kw-2">&</span>str) -> Cow<<span class="lifetime">'_</span>, [u8]>>; |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="form_urlencoded" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |