mirror of https://github.com/fafhrd91/actix-web
70 lines
1.4 KiB
Rust
70 lines
1.4 KiB
Rust
use std::{fmt, ops};
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use futures_util::future::{err, ok, Ready};
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use crate::dev::Payload;
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use crate::error::ParseError;
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use crate::extract::FromRequest;
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use crate::http::header;
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use crate::HttpRequest;
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/// Header extractor and responder.
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pub struct Header<T>(pub T);
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impl<T> Header<T> {
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/// Unwrap into inner `T` value.
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pub fn into_inner(self) -> T {
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self.0
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}
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}
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impl<T> ops::Deref for Header<T> {
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type Target = T;
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fn deref(&self) -> &T {
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&self.0
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}
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}
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impl<T> ops::DerefMut for Header<T> {
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fn deref_mut(&mut self) -> &mut T {
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&mut self.0
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}
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}
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impl<T> fmt::Debug for Header<T>
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where
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T: fmt::Debug,
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{
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "Header: {:?}", self.0)
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}
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}
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impl<T> fmt::Display for Header<T>
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where
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T: fmt::Display,
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{
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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fmt::Display::fmt(&self.0, f)
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}
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}
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/// See [here](#extractor) for example of usage as an extractor.
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impl<T> FromRequest for Header<T>
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where
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T: header::Header,
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{
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type Error = ParseError;
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type Future = Ready<Result<Self, Self::Error>>;
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type Config = ();
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#[inline]
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fn from_request(req: &HttpRequest, _: &mut Payload) -> Self::Future {
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match header::Header::parse(req) {
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Ok(header) => ok(Header(header)),
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Err(e) => err(e),
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}
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}
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}
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