Merge pull request #268 from quodlibetor/TimeZone-timestamp-millis

Add `timestamp_millis` and `timestamp_millis_opt`
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Brandon W Maister 2018-07-28 16:41:34 -04:00 committed by GitHub
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@ -310,6 +310,45 @@ pub trait TimeZone: Sized + Clone {
}
}
/// Makes a new `DateTime` from the number of non-leap milliseconds
/// since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp").
///
/// Panics on out-of-range number of milliseconds for a non-panicking
/// version see [`timestamp_millis_opt`](#method.timestamp_millis_opt).
///
/// # Example
///
/// ~~~~
/// use chrono::{Utc, TimeZone};
///
/// assert_eq!(Utc.timestamp_millis(1431648000).timestamp(), 1431648);
/// ~~~~
fn timestamp_millis(&self, millis: i64) -> DateTime<Self> {
self.timestamp_millis_opt(millis).unwrap()
}
/// Makes a new `DateTime` from the number of non-leap milliseconds
/// since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp").
///
///
/// Returns `LocalResult::None` on out-of-range number of milliseconds
/// and/or invalid nanosecond, otherwise always returns
/// `LocalResult::Single`.
///
/// # Example
///
/// ~~~~
/// use chrono::{Utc, TimeZone, LocalResult};
/// match Utc.timestamp_millis_opt(1431648000) {
/// LocalResult::Single(dt) => assert_eq!(dt.timestamp(), 1431648),
/// _ => panic!("Incorrect timestamp_millis"),
/// };
/// ~~~~
fn timestamp_millis_opt(&self, millis: i64) -> LocalResult<DateTime<Self>> {
let (secs, millis) = (millis / 1000, millis % 1000);
self.timestamp_opt(secs, millis as u32 * 1_000_000)
}
/// Parses a string with the specified format string and
/// returns a `DateTime` with the current offset.
/// See the [`format::strftime` module](../format/strftime/index.html)