Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 160 insertions, 0 deletions

diff --git a/third_party/rust/httpdate/src/lib.rs b/third_party/rust/httpdate/src/lib.rs
new file mode 100644
index 0000000000..32603d6301
--- /dev/null
+++ b/third_party/rust/httpdate/src/lib.rs
@@ -0,0 +1,160 @@
+//! Date and time utils for HTTP.
+//!
+//! Multiple HTTP header fields store timestamps.
+//! For example a response created on May 15, 2015 may contain the header
+//! `Date: Fri, 15 May 2015 15:34:21 GMT`. Since the timestamp does not
+//! contain any timezone or leap second information it is equvivalent to
+//! writing 1431696861 Unix time. Rust’s `SystemTime` is used to store
+//! these timestamps.
+//!
+//! This crate provides two public functions:
+//!
+//! * `parse_http_date` to parse a HTTP datetime string to a system time
+//! * `fmt_http_date` to format a system time to a IMF-fixdate
+//!
+//! In addition it exposes the `HttpDate` type that can be used to parse
+//! and format timestamps. Convert a sytem time to `HttpDate` and vice versa.
+//! The `HttpType` (8 bytes) is smaller than `SystemTime` (16 bytes) and
+//! using the display impl avoids a temporary allocation.
+#![forbid(unsafe_code)]
+
+use std::error;
+use std::fmt::{self, Display, Formatter};
+use std::io;
+use std::time::SystemTime;
+
+pub use date::HttpDate;
+
+mod date;
+
+/// An opaque error type for all parsing errors.
+#[derive(Debug)]
+pub struct Error(());
+
+impl error::Error for Error {}
+
+impl Display for Error {
+    fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
+        f.write_str("string contains no or an invalid date")
+    }
+}
+
+impl From<Error> for io::Error {
+    fn from(e: Error) -> io::Error {
+        io::Error::new(io::ErrorKind::Other, e)
+    }
+}
+
+/// Parse a date from an HTTP header field.
+///
+/// Supports the preferred IMF-fixdate and the legacy RFC 805 and
+/// ascdate formats. Two digit years are mapped to dates between
+/// 1970 and 2069.
+pub fn parse_http_date(s: &str) -> Result<SystemTime, Error> {
+    s.parse::<HttpDate>().map(|d| d.into())
+}
+
+/// Format a date to be used in a HTTP header field.
+///
+/// Dates are formatted as IMF-fixdate: `Fri, 15 May 2015 15:34:21 GMT`.
+pub fn fmt_http_date(d: SystemTime) -> String {
+    format!("{}", HttpDate::from(d))
+}
+
+#[cfg(test)]
+mod tests {
+    use std::str;
+    use std::time::{Duration, UNIX_EPOCH};
+
+    use super::{fmt_http_date, parse_http_date, HttpDate};
+
+    #[test]
+    fn test_rfc_example() {
+        let d = UNIX_EPOCH + Duration::from_secs(784111777);
+        assert_eq!(
+            d,
+            parse_http_date("Sun, 06 Nov 1994 08:49:37 GMT").expect("#1")
+        );
+        assert_eq!(
+            d,
+            parse_http_date("Sunday, 06-Nov-94 08:49:37 GMT").expect("#2")
+        );
+        assert_eq!(d, parse_http_date("Sun Nov  6 08:49:37 1994").expect("#3"));
+    }
+
+    #[test]
+    fn test2() {
+        let d = UNIX_EPOCH + Duration::from_secs(1475419451);
+        assert_eq!(
+            d,
+            parse_http_date("Sun, 02 Oct 2016 14:44:11 GMT").expect("#1")
+        );
+        assert!(parse_http_date("Sun Nov 10 08:00:00 1000").is_err());
+        assert!(parse_http_date("Sun Nov 10 08*00:00 2000").is_err());
+        assert!(parse_http_date("Sunday, 06-Nov-94 08+49:37 GMT").is_err());
+    }
+
+    #[test]
+    fn test3() {
+        let mut d = UNIX_EPOCH;
+        assert_eq!(d, parse_http_date("Thu, 01 Jan 1970 00:00:00 GMT").unwrap());
+        d += Duration::from_secs(3600);
+        assert_eq!(d, parse_http_date("Thu, 01 Jan 1970 01:00:00 GMT").unwrap());
+        d += Duration::from_secs(86400);
+        assert_eq!(d, parse_http_date("Fri, 02 Jan 1970 01:00:00 GMT").unwrap());
+        d += Duration::from_secs(2592000);
+        assert_eq!(d, parse_http_date("Sun, 01 Feb 1970 01:00:00 GMT").unwrap());
+        d += Duration::from_secs(2592000);
+        assert_eq!(d, parse_http_date("Tue, 03 Mar 1970 01:00:00 GMT").unwrap());
+        d += Duration::from_secs(31536005);
+        assert_eq!(d, parse_http_date("Wed, 03 Mar 1971 01:00:05 GMT").unwrap());
+        d += Duration::from_secs(15552000);
+        assert_eq!(d, parse_http_date("Mon, 30 Aug 1971 01:00:05 GMT").unwrap());
+        d += Duration::from_secs(6048000);
+        assert_eq!(d, parse_http_date("Mon, 08 Nov 1971 01:00:05 GMT").unwrap());
+        d += Duration::from_secs(864000000);
+        assert_eq!(d, parse_http_date("Fri, 26 Mar 1999 01:00:05 GMT").unwrap());
+    }
+
+    #[test]
+    fn test_fmt() {
+        let d = UNIX_EPOCH;
+        assert_eq!(fmt_http_date(d), "Thu, 01 Jan 1970 00:00:00 GMT");
+        let d = UNIX_EPOCH + Duration::from_secs(1475419451);
+        assert_eq!(fmt_http_date(d), "Sun, 02 Oct 2016 14:44:11 GMT");
+    }
+
+    #[allow(dead_code)]
+    fn testcase(data: &[u8]) {
+        if let Ok(s) = str::from_utf8(data) {
+            println!("{:?}", s);
+            if let Ok(d) = parse_http_date(s) {
+                let o = fmt_http_date(d);
+                assert!(!o.is_empty());
+            }
+        }
+    }
+
+    #[test]
+    fn size_of() {
+        assert_eq!(::std::mem::size_of::<HttpDate>(), 8);
+    }
+
+    #[test]
+    fn test_date_comparison() {
+        let a = UNIX_EPOCH + Duration::from_secs(784111777);
+        let b = a + Duration::from_secs(30);
+        assert!(a < b);
+        let a_date: HttpDate = a.into();
+        let b_date: HttpDate = b.into();
+        assert!(a_date < b_date);
+        assert_eq!(a_date.cmp(&b_date), ::std::cmp::Ordering::Less)
+    }
+
+    #[test]
+    fn test_parse_bad_date() {
+        // 1994-11-07 is actually a Monday
+        let parsed = "Sun, 07 Nov 1994 08:48:37 GMT".parse::<HttpDate>();
+        assert!(parsed.is_err())
+    }
+}