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mod utils; use bytes::Bytes; use bytes::{BufMut, BytesMut}; use std::collections::BTreeMap; use std::error::Error; use std::fmt; use std::ops::Add; pub use utils::check_header_value; pub use utils::get_header; pub use utils::HeaderChar; #[derive(Debug, Clone)] pub enum HeaderError { InvalidHeader, InvalidHeaderValue, } impl fmt::Display for HeaderError { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self { HeaderError::InvalidHeader => write!(f, "Invalid header."), HeaderError::InvalidHeaderValue => write!(f, "Invalid header value."), } } } impl Error for HeaderError {} #[derive(Debug, PartialEq, Clone, Ord, Eq, PartialOrd)] pub enum Header { Host, Connection, CacheControl, UpgradeInsecureRequests, UserAgent, Accept, SecFetchSite, SecFetchMode, SecFetchDest, SecFetchUser, AcceptEncoding, AcceptLanguage, Authorization, ContentEncoding, ContentLength, ContentType, Upgrade, Pragma, Referer, } impl From<Header> for Bytes { fn from(h: Header) -> Self { match h { Header::Host => Bytes::from_static(b"Host"), Header::Connection => Bytes::from_static(b"Connection"), Header::CacheControl => Bytes::from_static(b"Cache-Control"), Header::UpgradeInsecureRequests => Bytes::from_static(b"Upgrade-Insecure-Requests"), Header::UserAgent => Bytes::from_static(b"User-Agent"), Header::Accept => Bytes::from_static(b"Accept"), Header::SecFetchSite => Bytes::from_static(b"Sec-Fetch-Site"), Header::SecFetchMode => Bytes::from_static(b"Sec-Fetch-Mode"), Header::SecFetchDest => Bytes::from_static(b"Sec-Fetch-Dest"), Header::SecFetchUser => Bytes::from_static(b"Sec-Fetch-User"), Header::AcceptEncoding => Bytes::from_static(b"Accept-Encoding"), Header::AcceptLanguage => Bytes::from_static(b"Accept-Language"), Header::Authorization => Bytes::from_static(b"Authorization"), Header::ContentEncoding => Bytes::from_static(b"Content-Encoding"), Header::ContentLength => Bytes::from_static(b"Content-Length"), Header::ContentType => Bytes::from_static(b"Content-Type"), Header::Upgrade => Bytes::from_static(b"Upgrade"), Header::Pragma => Bytes::from_static(b"Pragma"), Header::Referer => Bytes::from_static(b"Referer"), } } } #[derive(Debug, Clone, Eq, PartialEq)] pub struct Headers { inner: BTreeMap<Header, Bytes>, } impl Headers { pub fn new() -> Self { Headers { inner: BTreeMap::new(), } } pub fn insert<T>(&mut self, key: Header, value: T) where T: Into<Bytes>, { self.inner.insert(key, value.into()); } pub fn get(&self, key: Header) -> Option<&Bytes> { self.inner.get(&key) } pub fn remove(&mut self, key: Header) { self.inner.remove(&key); } pub fn append(&mut self, mut other: Headers) { self.inner.append(&mut other.inner); } } impl Add<Headers> for Headers { type Output = Self; fn add(mut self, other: Self) -> Self::Output { self.append(other); self } } impl From<Headers> for Bytes { fn from(x: Headers) -> Self { let mut buf = BytesMut::new(); for (h, b) in x.inner { buf.put(Bytes::from(h)); buf.put(Bytes::from_static(&[58u8, sp!()])); buf.put(b); buf.put(Bytes::from_static(&[cr!(), lf!()])); } buf.freeze() } }