src/tools/compression.rs

   1 use anyhow::{bail, Error};
   2 use hyper::header;
   3
   4 /// Possible Compression Methods, order determines preference (later is preferred)
   5 #[derive(Eq, Ord, PartialEq, PartialOrd, Debug)]
   6 pub enum CompressionMethod {
   7     Deflate,
   8 //    Gzip,
   9 //    Brotli,
  10 }
  11
  12 impl CompressionMethod {
  13     pub fn content_encoding(&self) -> header::HeaderValue {
  14         header::HeaderValue::from_static(self.extension())
  15     }
  16
  17     pub fn extension(&self) -> &'static str {
  18         match *self {
  19 //            CompressionMethod::Brotli => "br",
  20 //            CompressionMethod::Gzip => "gzip",
  21             CompressionMethod::Deflate => "deflate",
  22         }
  23     }
  24 }
  25
  26 impl std::str::FromStr for CompressionMethod {
  27     type Err = Error;
  28
  29     fn from_str(s: &str) -> Result<Self, Self::Err> {
  30         match s {
  31 //            "br" => Ok(CompressionMethod::Brotli),
  32 //            "gzip" => Ok(CompressionMethod::Gzip),
  33             "deflate" => Ok(CompressionMethod::Deflate),
  34             // http accept-encoding allows to give weights with ';q='
  35             other if other.starts_with("deflate;q=") => Ok(CompressionMethod::Deflate),
  36             _ => bail!("unknown compression format"),
  37         }
  38     }
  39 }