75 lines
2.5 KiB
Rust
75 lines
2.5 KiB
Rust
use header::{Header, HeaderFormat};
|
|
use std::fmt::{mod, Show};
|
|
use super::util::from_one_raw_str;
|
|
use std::str::FromStr;
|
|
use time::{Tm, strptime};
|
|
|
|
// Egh, replace as soon as something better than time::Tm exists.
|
|
/// The `Date` header field.
|
|
#[deriving(PartialEq, Clone)]
|
|
pub struct Date(pub Tm);
|
|
|
|
impl Header for Date {
|
|
fn header_name(_: Option<Date>) -> &'static str {
|
|
"Date"
|
|
}
|
|
|
|
fn parse_header(raw: &[Vec<u8>]) -> Option<Date> {
|
|
from_one_raw_str(raw)
|
|
}
|
|
}
|
|
|
|
impl HeaderFormat for Date {
|
|
fn fmt_header(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
|
|
self.fmt(fmt)
|
|
}
|
|
}
|
|
|
|
impl fmt::Show for Date {
|
|
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
|
|
let Date(ref tm) = *self;
|
|
// bummer that tm.strftime allocates a string. It would nice if it
|
|
// returned a Show instead, since I don't need the String here
|
|
match tm.tm_utcoff {
|
|
0 => tm.rfc822().fmt(fmt),
|
|
_ => tm.to_utc().rfc822().fmt(fmt)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl FromStr for Date {
|
|
// Prior to 1995, there were three different formats commonly used by
|
|
// servers to communicate timestamps. For compatibility with old
|
|
// implementations, all three are defined here. The preferred format is
|
|
// a fixed-length and single-zone subset of the date and time
|
|
// specification used by the Internet Message Format [RFC5322].
|
|
//
|
|
// HTTP-date = IMF-fixdate / obs-date
|
|
//
|
|
// An example of the preferred format is
|
|
//
|
|
// Sun, 06 Nov 1994 08:49:37 GMT ; IMF-fixdate
|
|
//
|
|
// Examples of the two obsolete formats are
|
|
//
|
|
// Sunday, 06-Nov-94 08:49:37 GMT ; obsolete RFC 850 format
|
|
// Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format
|
|
//
|
|
// A recipient that parses a timestamp value in an HTTP header field
|
|
// MUST accept all three HTTP-date formats. When a sender generates a
|
|
// header field that contains one or more timestamps defined as
|
|
// HTTP-date, the sender MUST generate those timestamps in the
|
|
// IMF-fixdate format.
|
|
fn from_str(s: &str) -> Option<Date> {
|
|
strptime(s, "%a, %d %b %Y %T %Z").or_else(|_| {
|
|
strptime(s, "%A, %d-%b-%y %T %Z")
|
|
}).or_else(|_| {
|
|
strptime(s, "%c")
|
|
}).ok().map(|tm| Date(tm))
|
|
}
|
|
}
|
|
|
|
bench_header!(imf_fixdate, Date, { vec![b"Sun, 07 Nov 1994 08:48:37 GMT".to_vec()] })
|
|
bench_header!(rfc_850, Date, { vec![b"Sunday, 06-Nov-94 08:49:37 GMT".to_vec()] })
|
|
bench_header!(asctime, Date, { vec![b"Sun Nov 6 08:49:37 1994".to_vec()] })
|