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use std::fmt;
use header::{Header, Raw, Preference};
use header::parsing::{from_comma_delimited, fmt_comma_delimited};
#[derive(PartialEq, Clone, Debug)]
pub struct PreferenceApplied(pub Vec<Preference>);
__hyper__deref!(PreferenceApplied => Vec<Preference>);
impl Header for PreferenceApplied {
fn header_name() -> &'static str {
static NAME: &'static str = "Preference-Applied";
NAME
}
fn parse_header(raw: &Raw) -> ::Result<PreferenceApplied> {
let preferences = try!(from_comma_delimited(raw));
if !preferences.is_empty() {
Ok(PreferenceApplied(preferences))
} else {
Err(::Error::Header)
}
}
fn fmt_header(&self, f: &mut ::header::Formatter) -> fmt::Result {
f.fmt_line(self)
}
}
impl fmt::Display for PreferenceApplied {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let preferences: Vec<_> = self.0.iter().map(|pref| match pref {
&Preference::Extension(ref name, ref value, _) => Preference::Extension(
name.to_owned(),
value.to_owned(),
vec![]
),
preference => preference.clone()
}).collect();
fmt_comma_delimited(f, &preferences)
}
}
#[cfg(test)]
mod tests {
use header::Preference;
use super::*;
#[test]
fn test_format_ignore_parameters() {
assert_eq!(
format!("{}", PreferenceApplied(vec![Preference::Extension(
"foo".to_owned(),
"bar".to_owned(),
vec![("bar".to_owned(), "foo".to_owned()), ("buz".to_owned(), "".to_owned())]
)])),
"foo=bar".to_owned()
);
}
}
bench_header!(normal,
PreferenceApplied, { vec![b"respond-async, return=representation".to_vec(), b"wait=100".to_vec()] });