| <!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/http-0.2.9/src/header/value.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>value.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="../../../http/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="../../../http/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="kw">use </span>bytes::{Bytes, BytesMut}; |
| |
| <span class="kw">use </span>std::convert::TryFrom; |
| <span class="kw">use </span>std::error::Error; |
| <span class="kw">use </span>std::fmt::Write; |
| <span class="kw">use </span>std::str::FromStr; |
| <span class="kw">use </span>std::{cmp, fmt, mem, str}; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::header::name::HeaderName; |
| |
| <span class="doccomment">/// Represents an HTTP header field value. |
| /// |
| /// In practice, HTTP header field values are usually valid ASCII. However, the |
| /// HTTP spec allows for a header value to contain opaque bytes as well. In this |
| /// case, the header field value is not able to be represented as a string. |
| /// |
| /// To handle this, the `HeaderValue` is useable as a type and can be compared |
| /// with strings and implements `Debug`. A `to_str` fn is provided that returns |
| /// an `Err` if the header value contains non visible ascii characters. |
| </span><span class="attribute">#[derive(Clone, Hash)] |
| </span><span class="kw">pub struct </span>HeaderValue { |
| inner: Bytes, |
| is_sensitive: bool, |
| } |
| |
| <span class="doccomment">/// A possible error when converting a `HeaderValue` from a string or byte |
| /// slice. |
| </span><span class="kw">pub struct </span>InvalidHeaderValue { |
| _priv: (), |
| } |
| |
| <span class="doccomment">/// A possible error when converting a `HeaderValue` to a string representation. |
| /// |
| /// Header field values may contain opaque bytes, in which case it is not |
| /// possible to represent the value as a string. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>ToStrError { |
| _priv: (), |
| } |
| |
| <span class="kw">impl </span>HeaderValue { |
| <span class="doccomment">/// Convert a static string to a `HeaderValue`. |
| /// |
| /// This function will not perform any copying, however the string is |
| /// checked to ensure that no invalid characters are present. Only visible |
| /// ASCII characters (32-127) are permitted. |
| /// |
| /// # Panics |
| /// |
| /// This function panics if the argument contains invalid header value |
| /// characters. |
| /// |
| /// Until [Allow panicking in constants](https://github.com/rust-lang/rfcs/pull/2345) |
| /// makes its way into stable, the panic message at compile-time is |
| /// going to look cryptic, but should at least point at your header value: |
| /// |
| /// ```text |
| /// error: any use of this value will cause an error |
| /// --> http/src/header/value.rs:67:17 |
| /// | |
| /// 67 | ([] as [u8; 0])[0]; // Invalid header value |
| /// | ^^^^^^^^^^^^^^^^^^ |
| /// | | |
| /// | index out of bounds: the length is 0 but the index is 0 |
| /// | inside `HeaderValue::from_static` at http/src/header/value.rs:67:17 |
| /// | inside `INVALID_HEADER` at src/main.rs:73:33 |
| /// | |
| /// ::: src/main.rs:73:1 |
| /// | |
| /// 73 | const INVALID_HEADER: HeaderValue = HeaderValue::from_static("жsome value"); |
| /// | ---------------------------------------------------------------------------- |
| /// ``` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_static("hello"); |
| /// assert_eq!(val, "hello"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[allow(unconditional_panic)] </span><span class="comment">// required for the panic circumvention |
| </span><span class="kw">pub const fn </span>from_static(src: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> HeaderValue { |
| <span class="kw">let </span>bytes = src.as_bytes(); |
| <span class="kw">let </span><span class="kw-2">mut </span>i = <span class="number">0</span>; |
| <span class="kw">while </span>i < bytes.len() { |
| <span class="kw">if </span>!is_visible_ascii(bytes[i]) { |
| ([] <span class="kw">as </span>[u8; <span class="number">0</span>])[<span class="number">0</span>]; <span class="comment">// Invalid header value |
| </span>} |
| i += <span class="number">1</span>; |
| } |
| |
| HeaderValue { |
| inner: Bytes::from_static(bytes), |
| is_sensitive: <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Attempt to convert a string to a `HeaderValue`. |
| /// |
| /// If the argument contains invalid header value characters, an error is |
| /// returned. Only visible ASCII characters (32-127) are permitted. Use |
| /// `from_bytes` to create a `HeaderValue` that includes opaque octets |
| /// (128-255). |
| /// |
| /// This function is intended to be replaced in the future by a `TryFrom` |
| /// implementation once the trait is stabilized in std. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_str("hello").unwrap(); |
| /// assert_eq!(val, "hello"); |
| /// ``` |
| /// |
| /// An invalid value |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_str("\n"); |
| /// assert!(val.is_err()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>from_str(src: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><HeaderValue, InvalidHeaderValue> { |
| HeaderValue::try_from_generic(src, |s| Bytes::copy_from_slice(s.as_bytes())) |
| } |
| |
| <span class="doccomment">/// Converts a HeaderName into a HeaderValue |
| /// |
| /// Since every valid HeaderName is a valid HeaderValue this is done infallibly. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::{HeaderValue, HeaderName}; |
| /// # use http::header::ACCEPT; |
| /// let val = HeaderValue::from_name(ACCEPT); |
| /// assert_eq!(val, HeaderValue::from_bytes(b"accept").unwrap()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>from_name(name: HeaderName) -> HeaderValue { |
| name.into() |
| } |
| |
| <span class="doccomment">/// Attempt to convert a byte slice to a `HeaderValue`. |
| /// |
| /// If the argument contains invalid header value bytes, an error is |
| /// returned. Only byte values between 32 and 255 (inclusive) are permitted, |
| /// excluding byte 127 (DEL). |
| /// |
| /// This function is intended to be replaced in the future by a `TryFrom` |
| /// implementation once the trait is stabilized in std. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_bytes(b"hello\xfa").unwrap(); |
| /// assert_eq!(val, &b"hello\xfa"[..]); |
| /// ``` |
| /// |
| /// An invalid value |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_bytes(b"\n"); |
| /// assert!(val.is_err()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>from_bytes(src: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><HeaderValue, InvalidHeaderValue> { |
| HeaderValue::try_from_generic(src, Bytes::copy_from_slice) |
| } |
| |
| <span class="doccomment">/// Attempt to convert a `Bytes` buffer to a `HeaderValue`. |
| /// |
| /// This will try to prevent a copy if the type passed is the type used |
| /// internally, and will copy the data if it is not. |
| </span><span class="kw">pub fn </span>from_maybe_shared<T>(src: T) -> <span class="prelude-ty">Result</span><HeaderValue, InvalidHeaderValue> |
| <span class="kw">where |
| </span>T: AsRef<[u8]> + <span class="lifetime">'static</span>, |
| { |
| <span class="macro">if_downcast_into!</span>(T, Bytes, src, { |
| <span class="kw">return </span>HeaderValue::from_shared(src); |
| }); |
| |
| HeaderValue::from_bytes(src.as_ref()) |
| } |
| |
| <span class="doccomment">/// Convert a `Bytes` directly into a `HeaderValue` without validating. |
| /// |
| /// This function does NOT validate that illegal bytes are not contained |
| /// within the buffer. |
| </span><span class="kw">pub unsafe fn </span>from_maybe_shared_unchecked<T>(src: T) -> HeaderValue |
| <span class="kw">where |
| </span>T: AsRef<[u8]> + <span class="lifetime">'static</span>, |
| { |
| <span class="kw">if </span><span class="macro">cfg!</span>(debug_assertions) { |
| <span class="kw">match </span>HeaderValue::from_maybe_shared(src) { |
| <span class="prelude-val">Ok</span>(val) => val, |
| <span class="prelude-val">Err</span>(_err) => { |
| <span class="macro">panic!</span>(<span class="string">"HeaderValue::from_maybe_shared_unchecked() with invalid bytes"</span>); |
| } |
| } |
| } <span class="kw">else </span>{ |
| |
| <span class="macro">if_downcast_into!</span>(T, Bytes, src, { |
| <span class="kw">return </span>HeaderValue { |
| inner: src, |
| is_sensitive: <span class="bool-val">false</span>, |
| }; |
| }); |
| |
| <span class="kw">let </span>src = Bytes::copy_from_slice(src.as_ref()); |
| HeaderValue { |
| inner: src, |
| is_sensitive: <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>from_shared(src: Bytes) -> <span class="prelude-ty">Result</span><HeaderValue, InvalidHeaderValue> { |
| HeaderValue::try_from_generic(src, std::convert::identity) |
| } |
| |
| <span class="kw">fn </span>try_from_generic<T: AsRef<[u8]>, F: FnOnce(T) -> Bytes>(src: T, into: F) -> <span class="prelude-ty">Result</span><HeaderValue, InvalidHeaderValue> { |
| <span class="kw">for </span><span class="kw-2">&</span>b <span class="kw">in </span>src.as_ref() { |
| <span class="kw">if </span>!is_valid(b) { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(InvalidHeaderValue { _priv: () }); |
| } |
| } |
| <span class="prelude-val">Ok</span>(HeaderValue { |
| inner: into(src), |
| is_sensitive: <span class="bool-val">false</span>, |
| }) |
| } |
| |
| <span class="doccomment">/// Yields a `&str` slice if the `HeaderValue` only contains visible ASCII |
| /// chars. |
| /// |
| /// This function will perform a scan of the header value, checking all the |
| /// characters. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_static("hello"); |
| /// assert_eq!(val.to_str().unwrap(), "hello"); |
| /// ``` |
| </span><span class="kw">pub fn </span>to_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="kw-2">&</span>str, ToStrError> { |
| <span class="kw">let </span>bytes = <span class="self">self</span>.as_ref(); |
| |
| <span class="kw">for </span><span class="kw-2">&</span>b <span class="kw">in </span>bytes { |
| <span class="kw">if </span>!is_visible_ascii(b) { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ToStrError { _priv: () }); |
| } |
| } |
| |
| <span class="kw">unsafe </span>{ <span class="prelude-val">Ok</span>(str::from_utf8_unchecked(bytes)) } |
| } |
| |
| <span class="doccomment">/// Returns the length of `self`. |
| /// |
| /// This length is in bytes. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_static("hello"); |
| /// assert_eq!(val.len(), 5); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.as_ref().len() |
| } |
| |
| <span class="doccomment">/// Returns true if the `HeaderValue` has a length of zero bytes. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_static(""); |
| /// assert!(val.is_empty()); |
| /// |
| /// let val = HeaderValue::from_static("hello"); |
| /// assert!(!val.is_empty()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.len() == <span class="number">0 |
| </span>} |
| |
| <span class="doccomment">/// Converts a `HeaderValue` to a byte slice. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let val = HeaderValue::from_static("hello"); |
| /// assert_eq!(val.as_bytes(), b"hello"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>as_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="self">self</span>.as_ref() |
| } |
| |
| <span class="doccomment">/// Mark that the header value represents sensitive information. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let mut val = HeaderValue::from_static("my secret"); |
| /// |
| /// val.set_sensitive(true); |
| /// assert!(val.is_sensitive()); |
| /// |
| /// val.set_sensitive(false); |
| /// assert!(!val.is_sensitive()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>set_sensitive(<span class="kw-2">&mut </span><span class="self">self</span>, val: bool) { |
| <span class="self">self</span>.is_sensitive = val; |
| } |
| |
| <span class="doccomment">/// Returns `true` if the value represents sensitive data. |
| /// |
| /// Sensitive data could represent passwords or other data that should not |
| /// be stored on disk or in memory. By marking header values as sensitive, |
| /// components using this crate can be instructed to treat them with special |
| /// care for security reasons. For example, caches can avoid storing |
| /// sensitive values, and HPACK encoders used by HTTP/2.0 implementations |
| /// can choose not to compress them. |
| /// |
| /// Additionally, sensitive values will be masked by the `Debug` |
| /// implementation of `HeaderValue`. |
| /// |
| /// Note that sensitivity is not factored into equality or ordering. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use http::header::HeaderValue; |
| /// let mut val = HeaderValue::from_static("my secret"); |
| /// |
| /// val.set_sensitive(true); |
| /// assert!(val.is_sensitive()); |
| /// |
| /// val.set_sensitive(false); |
| /// assert!(!val.is_sensitive()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>is_sensitive(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.is_sensitive |
| } |
| } |
| |
| <span class="kw">impl </span>AsRef<[u8]> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="self">self</span>.inner.as_ref() |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>HeaderValue { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="kw">if </span><span class="self">self</span>.is_sensitive { |
| f.write_str(<span class="string">"Sensitive"</span>) |
| } <span class="kw">else </span>{ |
| f.write_str(<span class="string">"\""</span>)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>from = <span class="number">0</span>; |
| <span class="kw">let </span>bytes = <span class="self">self</span>.as_bytes(); |
| <span class="kw">for </span>(i, <span class="kw-2">&</span>b) <span class="kw">in </span>bytes.iter().enumerate() { |
| <span class="kw">if </span>!is_visible_ascii(b) || b == <span class="string">b'"' </span>{ |
| <span class="kw">if </span>from != i { |
| f.write_str(<span class="kw">unsafe </span>{ str::from_utf8_unchecked(<span class="kw-2">&</span>bytes[from..i]) })<span class="question-mark">?</span>; |
| } |
| <span class="kw">if </span>b == <span class="string">b'"' </span>{ |
| f.write_str(<span class="string">"\\\""</span>)<span class="question-mark">?</span>; |
| } <span class="kw">else </span>{ |
| <span class="macro">write!</span>(f, <span class="string">"\\x{:x}"</span>, b)<span class="question-mark">?</span>; |
| } |
| from = i + <span class="number">1</span>; |
| } |
| } |
| |
| f.write_str(<span class="kw">unsafe </span>{ str::from_utf8_unchecked(<span class="kw-2">&</span>bytes[from..]) })<span class="question-mark">?</span>; |
| f.write_str(<span class="string">"\""</span>) |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>From<HeaderName> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(h: HeaderName) -> HeaderValue { |
| HeaderValue { |
| inner: h.into_bytes(), |
| is_sensitive: <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>from_integers { |
| ($(<span class="macro-nonterminal">$name</span>:ident: <span class="macro-nonterminal">$t</span>:ident => <span class="macro-nonterminal">$max_len</span>:expr),<span class="kw-2">*</span>) => {$( |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$t</span>> <span class="kw">for </span>HeaderValue { |
| <span class="kw">fn </span>from(num: <span class="macro-nonterminal">$t</span>) -> HeaderValue { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = <span class="kw">if </span>mem::size_of::<BytesMut>() - <span class="number">1 </span>< <span class="macro-nonterminal">$max_len </span>{ |
| <span class="comment">// On 32bit platforms, BytesMut max inline size |
| // is 15 bytes, but the $max_len could be bigger. |
| // |
| // The likelihood of the number *actually* being |
| // that big is very small, so only allocate |
| // if the number needs that space. |
| // |
| // The largest decimal number in 15 digits: |
| // It wold be 10.pow(15) - 1, but this is a constant |
| // version. |
| </span><span class="kw">if </span>num <span class="kw">as </span>u64 > <span class="number">999_999_999_999_999_999 </span>{ |
| BytesMut::with_capacity(<span class="macro-nonterminal">$max_len</span>) |
| } <span class="kw">else </span>{ |
| <span class="comment">// fits inline... |
| </span>BytesMut::new() |
| } |
| } <span class="kw">else </span>{ |
| <span class="comment">// full value fits inline, so don't allocate! |
| </span>BytesMut::new() |
| }; |
| <span class="kw">let _ </span>= buf.write_str(::itoa::Buffer::new().format(num)); |
| HeaderValue { |
| inner: buf.freeze(), |
| is_sensitive: <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span><span class="macro-nonterminal">$name</span>() { |
| <span class="kw">let </span>n: <span class="macro-nonterminal">$t </span>= <span class="number">55</span>; |
| <span class="kw">let </span>val = HeaderValue::from(n); |
| <span class="macro">assert_eq!</span>(val, <span class="kw-2">&</span>n.to_string()); |
| |
| <span class="kw">let </span>n = ::std::<span class="macro-nonterminal">$t::MAX</span>; |
| <span class="kw">let </span>val = HeaderValue::from(n); |
| <span class="macro">assert_eq!</span>(val, <span class="kw-2">&</span>n.to_string()); |
| } |
| )<span class="kw-2">*</span>}; |
| } |
| |
| <span class="macro">from_integers! </span>{ |
| <span class="comment">// integer type => maximum decimal length |
| |
| // u8 purposely left off... HeaderValue::from(b'3') could be confusing |
| </span>from_u16: u16 => <span class="number">5</span>, |
| from_i16: i16 => <span class="number">6</span>, |
| from_u32: u32 => <span class="number">10</span>, |
| from_i32: i32 => <span class="number">11</span>, |
| from_u64: u64 => <span class="number">20</span>, |
| from_i64: i64 => <span class="number">20 |
| </span>} |
| |
| <span class="attribute">#[cfg(target_pointer_width = <span class="string">"16"</span>)] |
| </span><span class="macro">from_integers! </span>{ |
| from_usize: usize => <span class="number">5</span>, |
| from_isize: isize => <span class="number">6 |
| </span>} |
| |
| <span class="attribute">#[cfg(target_pointer_width = <span class="string">"32"</span>)] |
| </span><span class="macro">from_integers! </span>{ |
| from_usize: usize => <span class="number">10</span>, |
| from_isize: isize => <span class="number">11 |
| </span>} |
| |
| <span class="attribute">#[cfg(target_pointer_width = <span class="string">"64"</span>)] |
| </span><span class="macro">from_integers! </span>{ |
| from_usize: usize => <span class="number">20</span>, |
| from_isize: isize => <span class="number">20 |
| </span>} |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>from_header_name_tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="kw">crate</span>::header::map::HeaderMap; |
| <span class="kw">use </span><span class="kw">crate</span>::header::name; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>it_can_insert_header_name_as_header_value() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = HeaderMap::new(); |
| map.insert(name::UPGRADE, name::SEC_WEBSOCKET_PROTOCOL.into()); |
| map.insert( |
| name::ACCEPT, |
| name::HeaderName::from_bytes(<span class="string">b"hello-world"</span>).unwrap().into(), |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| map.get(name::UPGRADE).unwrap(), |
| HeaderValue::from_bytes(<span class="string">b"sec-websocket-protocol"</span>).unwrap() |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| map.get(name::ACCEPT).unwrap(), |
| HeaderValue::from_bytes(<span class="string">b"hello-world"</span>).unwrap() |
| ); |
| } |
| } |
| |
| <span class="kw">impl </span>FromStr <span class="kw">for </span>HeaderValue { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= InvalidHeaderValue; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><HeaderValue, <span class="self">Self</span>::Err> { |
| HeaderValue::from_str(s) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> From<<span class="kw-2">&</span><span class="lifetime">'a </span>HeaderValue> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(t: <span class="kw-2">&</span><span class="lifetime">'a </span>HeaderValue) -> <span class="self">Self </span>{ |
| t.clone() |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> TryFrom<<span class="kw-2">&</span><span class="lifetime">'a </span>str> <span class="kw">for </span>HeaderValue { |
| <span class="kw">type </span>Error = InvalidHeaderValue; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>try_from(t: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| t.parse() |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> TryFrom<<span class="kw-2">&</span><span class="lifetime">'a </span>String> <span class="kw">for </span>HeaderValue { |
| <span class="kw">type </span>Error = InvalidHeaderValue; |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>try_from(s: <span class="kw-2">&</span><span class="lifetime">'a </span>String) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| <span class="self">Self</span>::from_bytes(s.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> TryFrom<<span class="kw-2">&</span><span class="lifetime">'a </span>[u8]> <span class="kw">for </span>HeaderValue { |
| <span class="kw">type </span>Error = InvalidHeaderValue; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>try_from(t: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| HeaderValue::from_bytes(t) |
| } |
| } |
| |
| <span class="kw">impl </span>TryFrom<String> <span class="kw">for </span>HeaderValue { |
| <span class="kw">type </span>Error = InvalidHeaderValue; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>try_from(t: String) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| HeaderValue::from_shared(t.into()) |
| } |
| } |
| |
| <span class="kw">impl </span>TryFrom<Vec<u8>> <span class="kw">for </span>HeaderValue { |
| <span class="kw">type </span>Error = InvalidHeaderValue; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>try_from(vec: Vec<u8>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> { |
| HeaderValue::from_shared(vec.into()) |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>try_from_header_name_tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="kw">crate</span>::header::name; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>it_converts_using_try_from() { |
| <span class="macro">assert_eq!</span>( |
| HeaderValue::try_from(name::UPGRADE).unwrap(), |
| HeaderValue::from_bytes(<span class="string">b"upgrade"</span>).unwrap() |
| ); |
| } |
| } |
| |
| <span class="kw">const fn </span>is_visible_ascii(b: u8) -> bool { |
| b >= <span class="number">32 </span>&& b < <span class="number">127 </span>|| b == <span class="string">b'\t' |
| </span>} |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>is_valid(b: u8) -> bool { |
| b >= <span class="number">32 </span>&& b != <span class="number">127 </span>|| b == <span class="string">b'\t' |
| </span>} |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>InvalidHeaderValue { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| f.debug_struct(<span class="string">"InvalidHeaderValue"</span>) |
| <span class="comment">// skip _priv noise |
| </span>.finish() |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>InvalidHeaderValue { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.write_str(<span class="string">"failed to parse header value"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Error <span class="kw">for </span>InvalidHeaderValue {} |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>ToStrError { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.write_str(<span class="string">"failed to convert header to a str"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Error <span class="kw">for </span>ToStrError {} |
| |
| <span class="comment">// ===== PartialEq / PartialOrd ===== |
| |
| </span><span class="kw">impl </span>PartialEq <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> bool { |
| <span class="self">self</span>.inner == other.inner |
| } |
| } |
| |
| <span class="kw">impl </span>Eq <span class="kw">for </span>HeaderValue {} |
| |
| <span class="kw">impl </span>PartialOrd <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| <span class="self">self</span>.inner.partial_cmp(<span class="kw-2">&</span>other.inner) |
| } |
| } |
| |
| <span class="kw">impl </span>Ord <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span><span class="self">Self</span>) -> cmp::Ordering { |
| <span class="self">self</span>.inner.cmp(<span class="kw-2">&</span>other.inner) |
| } |
| } |
| |
| <span class="kw">impl </span>PartialEq<str> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>str) -> bool { |
| <span class="self">self</span>.inner == other.as_bytes() |
| } |
| } |
| |
| <span class="kw">impl </span>PartialEq<[u8]> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>[u8]) -> bool { |
| <span class="self">self</span>.inner == other |
| } |
| } |
| |
| <span class="kw">impl </span>PartialOrd<str> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| (<span class="kw-2">*</span><span class="self">self</span>.inner).partial_cmp(other.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl </span>PartialOrd<[u8]> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| (<span class="kw-2">*</span><span class="self">self</span>.inner).partial_cmp(other) |
| } |
| } |
| |
| <span class="kw">impl </span>PartialEq<HeaderValue> <span class="kw">for </span>str { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> bool { |
| <span class="kw-2">*</span>other == <span class="kw-2">*</span><span class="self">self |
| </span>} |
| } |
| |
| <span class="kw">impl </span>PartialEq<HeaderValue> <span class="kw">for </span>[u8] { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> bool { |
| <span class="kw-2">*</span>other == <span class="kw-2">*</span><span class="self">self |
| </span>} |
| } |
| |
| <span class="kw">impl </span>PartialOrd<HeaderValue> <span class="kw">for </span>str { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| <span class="self">self</span>.as_bytes().partial_cmp(other.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl </span>PartialOrd<HeaderValue> <span class="kw">for </span>[u8] { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| <span class="self">self</span>.partial_cmp(other.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl </span>PartialEq<String> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>String) -> bool { |
| <span class="kw-2">*</span><span class="self">self </span>== <span class="kw-2">&</span>other[..] |
| } |
| } |
| |
| <span class="kw">impl </span>PartialOrd<String> <span class="kw">for </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>String) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| <span class="self">self</span>.inner.partial_cmp(other.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl </span>PartialEq<HeaderValue> <span class="kw">for </span>String { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> bool { |
| <span class="kw-2">*</span>other == <span class="kw-2">*</span><span class="self">self |
| </span>} |
| } |
| |
| <span class="kw">impl </span>PartialOrd<HeaderValue> <span class="kw">for </span>String { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| <span class="self">self</span>.as_bytes().partial_cmp(other.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> PartialEq<HeaderValue> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> bool { |
| <span class="kw-2">**</span><span class="self">self </span>== <span class="kw-2">*</span>other |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> PartialOrd<HeaderValue> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>HeaderValue { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| (<span class="kw-2">**</span><span class="self">self</span>).partial_cmp(other) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: <span class="question-mark">?</span>Sized> PartialEq<<span class="kw-2">&</span><span class="lifetime">'a </span>T> <span class="kw">for </span>HeaderValue |
| <span class="kw">where |
| </span>HeaderValue: PartialEq<T>, |
| { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: &&<span class="lifetime">'a </span>T) -> bool { |
| <span class="kw-2">*</span><span class="self">self </span>== <span class="kw-2">**</span>other |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: <span class="question-mark">?</span>Sized> PartialOrd<<span class="kw-2">&</span><span class="lifetime">'a </span>T> <span class="kw">for </span>HeaderValue |
| <span class="kw">where |
| </span>HeaderValue: PartialOrd<T>, |
| { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: &&<span class="lifetime">'a </span>T) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| <span class="self">self</span>.partial_cmp(<span class="kw-2">*</span>other) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> PartialEq<HeaderValue> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>str { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> bool { |
| <span class="kw-2">*</span>other == <span class="kw-2">*</span><span class="self">self |
| </span>} |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> PartialOrd<HeaderValue> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>str { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>HeaderValue) -> <span class="prelude-ty">Option</span><cmp::Ordering> { |
| <span class="self">self</span>.as_bytes().partial_cmp(other.as_bytes()) |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_try_from() { |
| HeaderValue::try_from(<span class="macro">vec!</span>[<span class="number">127</span>]).unwrap_err(); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_debug() { |
| <span class="kw">let </span>cases = <span class="kw-2">&</span>[ |
| (<span class="string">"hello"</span>, <span class="string">"\"hello\""</span>), |
| (<span class="string">"hello \"world\""</span>, <span class="string">"\"hello \\\"world\\\"\""</span>), |
| (<span class="string">"\u{7FFF}hello"</span>, <span class="string">"\"\\xe7\\xbf\\xbfhello\""</span>), |
| ]; |
| |
| <span class="kw">for </span><span class="kw-2">&</span>(value, expected) <span class="kw">in </span>cases { |
| <span class="kw">let </span>val = HeaderValue::from_bytes(value.as_bytes()).unwrap(); |
| <span class="kw">let </span>actual = <span class="macro">format!</span>(<span class="string">"{:?}"</span>, val); |
| <span class="macro">assert_eq!</span>(expected, actual); |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>sensitive = HeaderValue::from_static(<span class="string">"password"</span>); |
| sensitive.set_sensitive(<span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(<span class="string">"Sensitive"</span>, <span class="macro">format!</span>(<span class="string">"{:?}"</span>, sensitive)); |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="http" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |