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use std::fmt;
use std::str;
pub use self::Encoding::{Chunked, Brotli, Gzip, Deflate, Compress, Identity, EncodingExt, Trailers};
/// A value to represent an encoding used in `Transfer-Encoding`
/// or `Accept-Encoding` header.
#[derive(Clone, PartialEq, Debug)]
pub enum Encoding {
/// The `chunked` encoding.
Chunked,
/// The `br` encoding.
Brotli,
/// The `gzip` encoding.
Gzip,
/// The `deflate` encoding.
Deflate,
/// The `compress` encoding.
Compress,
/// The `identity` encoding.
Identity,
/// The `trailers` encoding.
Trailers,
/// Some other encoding that is less common, can be any String.
EncodingExt(String)
}
impl fmt::Display for Encoding {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(match *self {
Chunked => "chunked",
Brotli => "br",
Gzip => "gzip",
Deflate => "deflate",
Compress => "compress",
Identity => "identity",
Trailers => "trailers",
EncodingExt(ref s) => s.as_ref()
})
}
}
impl str::FromStr for Encoding {
type Err = ::Error;
fn from_str(s: &str) -> ::Result<Encoding> {
match s {
"chunked" => Ok(Chunked),
"br" => Ok(Brotli),
"deflate" => Ok(Deflate),
"gzip" => Ok(Gzip),
"compress" => Ok(Compress),
"identity" => Ok(Identity),
"trailers" => Ok(Trailers),
_ => Ok(EncodingExt(s.to_owned()))
}
}
}