From 19955ac992a94986024712043c71f81990cdb9db Mon Sep 17 00:00:00 2001 From: Brandon W Maister Date: Sat, 28 Jul 2018 15:18:15 -0400 Subject: [PATCH] Add `timestamp_millis` and `timestamp_millis_opt` Fixes #264 --- src/offset/mod.rs | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/src/offset/mod.rs b/src/offset/mod.rs index e94ab50..ca86574 100644 --- a/src/offset/mod.rs +++ b/src/offset/mod.rs @@ -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.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> { + 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)