mirror of https://github.com/http-rs/http-types
209 lines
5.1 KiB
Rust
209 lines
5.1 KiB
Rust
use crate::headers::{HeaderValue, Values};
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use std::fmt::{self, Debug, Display};
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use std::iter::FromIterator;
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use std::ops::{Deref, DerefMut, Index};
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use std::slice::SliceIndex;
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/// A list of `HeaderValue`s.
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///
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/// This always contains at least one header value.
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#[derive(Clone)]
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pub struct HeaderValues {
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pub(crate) inner: Vec<HeaderValue>,
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}
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impl HeaderValues {
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/// Move all values from `other` into `self`, leaving `other` empty.
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pub fn append(&mut self, other: &mut Self) {
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self.inner.append(&mut other.inner)
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}
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/// Returns a reference or a value depending on the type of index.
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pub fn get(&self, index: usize) -> Option<&HeaderValue> {
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self.inner.get(index)
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}
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/// Returns a mutable reference or a value depending on the type of index.
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pub fn get_mut(&mut self, index: usize) -> Option<&mut HeaderValue> {
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self.inner.get_mut(index)
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}
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/// Returns `true` if there is a value corresponding to the specified `HeaderValue` in the list,
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/// `false` otherwise.
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pub fn contains(&self, value: &HeaderValue) -> bool {
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self.inner.contains(value)
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}
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/// Returns the last `HeaderValue`.
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pub fn last(&self) -> &HeaderValue {
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self.inner
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.last()
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.expect("HeaderValues must always contain at least one value")
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}
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/// An iterator visiting all header values in arbitrary order.
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pub fn iter(&self) -> Values<'_> {
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Values::new_values(self)
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}
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// /// An iterator visiting all header values in arbitrary order, with mutable
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// /// references to the values.
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// pub fn iter_mut(&mut self) -> ValuesMut<'_> {
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// ValuesMut {
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// inner: self.headers.iter_mut(),
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// }
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// }
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}
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impl<I: SliceIndex<[HeaderValue]>> Index<I> for HeaderValues {
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type Output = I::Output;
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#[inline]
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fn index(&self, index: I) -> &Self::Output {
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Index::index(&self.inner, index)
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}
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}
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impl FromIterator<HeaderValue> for HeaderValues {
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fn from_iter<I>(iter: I) -> HeaderValues
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where
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I: IntoIterator<Item = HeaderValue>,
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{
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let iter = iter.into_iter();
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let mut output = Vec::with_capacity(iter.size_hint().0);
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for v in iter {
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output.push(v);
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}
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HeaderValues { inner: output }
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}
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}
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impl Debug for HeaderValues {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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if self.inner.len() == 1 {
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write!(f, "{:?}", self.inner[0])
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} else {
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f.debug_list().entries(self.inner.iter()).finish()
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}
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}
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}
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impl Display for HeaderValues {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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let mut list = f.debug_list();
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for v in &self.inner {
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list.entry(&v);
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}
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list.finish()
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}
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}
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impl PartialEq<str> for HeaderValues {
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fn eq(&self, other: &str) -> bool {
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self.inner.len() == 1 && self.inner[0] == other
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}
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}
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impl<'a> PartialEq<&'a str> for HeaderValues {
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fn eq(&self, other: &&'a str) -> bool {
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self.inner.len() == 1 && &self.inner[0] == other
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}
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}
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impl<'a> PartialEq<[&'a str]> for HeaderValues {
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fn eq(&self, other: &[&'a str]) -> bool {
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self.inner.iter().eq(other.iter())
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}
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}
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impl PartialEq<String> for HeaderValues {
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fn eq(&self, other: &String) -> bool {
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self.inner.len() == 1 && self.inner[0] == *other
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}
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}
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impl PartialEq<&String> for HeaderValues {
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fn eq(&self, other: &&String) -> bool {
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self.inner.len() == 1 && self.inner[0] == **other
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}
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}
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impl From<HeaderValue> for HeaderValues {
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fn from(other: HeaderValue) -> Self {
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Self { inner: vec![other] }
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}
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}
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impl AsRef<HeaderValue> for HeaderValues {
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fn as_ref(&self) -> &HeaderValue {
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&self.inner[0]
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}
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}
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impl AsMut<HeaderValue> for HeaderValues {
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fn as_mut(&mut self) -> &mut HeaderValue {
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&mut self.inner[0]
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}
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}
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impl Deref for HeaderValues {
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type Target = HeaderValue;
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fn deref(&self) -> &HeaderValue {
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&self.inner[0]
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}
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}
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impl DerefMut for HeaderValues {
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fn deref_mut(&mut self) -> &mut HeaderValue {
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&mut self.inner[0]
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}
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}
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impl<'a> IntoIterator for &'a HeaderValues {
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type Item = &'a HeaderValue;
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type IntoIter = Values<'a>;
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#[inline]
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fn into_iter(self) -> Self::IntoIter {
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self.iter()
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}
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}
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impl From<Vec<HeaderValue>> for HeaderValues {
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fn from(headers: Vec<HeaderValue>) -> Self {
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Self { inner: headers }
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}
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}
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impl IntoIterator for HeaderValues {
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type Item = HeaderValue;
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type IntoIter = std::vec::IntoIter<HeaderValue>;
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#[inline]
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fn into_iter(self) -> Self::IntoIter {
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self.inner.into_iter()
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_debug_single() {
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let header_values = HeaderValues {
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inner: vec!["foo0".parse().unwrap()],
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};
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assert_eq!(format!("{:?}", header_values), "\"foo0\"");
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}
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#[test]
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fn test_debug_multiple() {
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let header_values = HeaderValues {
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inner: vec!["foo0".parse().unwrap(), "foo1".parse().unwrap()],
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};
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assert_eq!(format!("{:?}", header_values), r#"["foo0", "foo1"]"#);
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}
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}
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