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//! # Chrono-TZ 0.1.0 //! //! `Chrono-TZ` is a library that provides implementors of the //! [`TimeZone`][timezone] trait for [`rust-chrono`][chrono]. The //! impls are generated by a build script using the [`IANA database`][iana]. //! //! [chrono]: https://github.com/lifthrasiir/rust-chrono //! [timezone]: ../chrono/offset/trait.TimeZone.html //! [iana]: http://www.iana.org/time-zones //! //! ## Usage //! //! Put this in your `Cargo.toml`: //! //! ```toml //! [dependencies] //! chrono = "0.2" //! chrono-tz = "0.1" //! ``` //! //! Then you will need to write (in your crate root): //! //! ``` //! extern crate chrono; //! extern crate chrono_tz; //! ``` //! //! ## Examples //! //! Create a time in one timezone and convert it to UTC //! //! ``` //! # extern crate chrono; //! # extern crate chrono_tz; //! use chrono::{TimeZone, UTC}; //! use chrono_tz::US::Pacific; //! //! # fn main() { //! let pacific_time = Pacific.ymd(1990, 5, 6).and_hms(12, 30, 45); //! let utc_time = pacific_time.with_timezone(&UTC); //! assert_eq!(utc_time, UTC.ymd(1990, 5, 6).and_hms(19, 30, 45)); //! # } //! ``` //! //! London and New York change their clocks on different days in March //! so only have a 4-hour difference on certain days. //! //! ``` //! # extern crate chrono; //! # extern crate chrono_tz; //! use chrono::TimeZone; //! use chrono_tz::Europe::London; //! use chrono_tz::America::New_York; //! //! # fn main() { //! let london_time = London.ymd(2016, 3, 18).and_hms(3, 0, 0); //! let ny_time = london_time.with_timezone(&New_York); //! assert_eq!(ny_time, New_York.ymd(2016, 3, 17).and_hms(23, 0, 0)); //! # } //! ``` //! //! Adding 24 hours across a daylight savings change causes a change //! in local time //! //! ``` //! # extern crate chrono; //! # extern crate chrono_tz; //! use chrono::{TimeZone, Duration}; //! use chrono_tz::Europe::London; //! //! # fn main() { //! let dt = London.ymd(2016, 10, 29).and_hms(12, 0, 0); //! let later = dt + Duration::hours(24); //! assert_eq!(later, London.ymd(2016, 10, 30).and_hms(11, 0, 0)); //! # } //! ``` //! //! And of course you can always convert a local time to a unix timestamp //! //! ``` //! # extern crate chrono; //! # extern crate chrono_tz; //! use chrono::TimeZone; //! use chrono_tz::Asia::Kolkata; //! //! # fn main() { //! let dt = Kolkata.ymd(2000, 1, 1).and_hms(0, 0, 0); //! let timestamp = dt.timestamp(); //! assert_eq!(timestamp, 946665000); //! # } //! ``` //! //! Pretty-printing a string will use the correct abbreviation for the timezone //! //! ``` //! # extern crate chrono; //! # extern crate chrono_tz; //! use chrono::TimeZone; //! use chrono_tz::Europe::London; //! //! # fn main() { //! let dt = London.ymd(2016, 5, 10).and_hms(12, 0, 0); //! assert_eq!(dt.to_string(), "2016-05-10 12:00:00 BST"); //! assert_eq!(dt.to_rfc3339(), "2016-05-10T12:00:00+01:00"); //! # } //! ``` extern crate chrono; mod timezone_impl; mod timezones; mod directory; pub use directory::*; #[cfg(test)] mod tests { use super::Europe::London; use super::Europe::Berlin; use chrono::{TimeZone, Duration}; #[test] fn london_to_berlin() { let dt = London.ymd(2016, 10, 8).and_hms(17, 0, 0); let converted = dt.with_timezone(&Berlin); let expected = Berlin.ymd(2016, 10, 8).and_hms(18, 0, 0); assert_eq!(converted, expected); } #[test] fn london_dst() { let dt = London.ymd(2016, 3, 10).and_hms(5, 0, 0); let later = dt + Duration::days(180); let expected = London.ymd(2016, 9, 6).and_hms(6, 0, 0); assert_eq!(later, expected); } #[test] #[should_panic] fn nonexistent_time() { let _ = London.ymd(2016, 3, 27).and_hms(1, 30, 0); } #[test] fn time_exists() { let _ = London.ymd(2016, 3, 27).and_hms(1, 0, 0); } #[test] fn time_exists_2() { let _ = London.ymd(2016, 3, 27).and_hms(2, 0, 0); } #[test] #[should_panic] fn ambiguous_time() { let _ = London.ymd(2016, 10, 30).and_hms(1, 0, 0); } #[test] #[should_panic] fn ambiguous_time_2() { let _ = London.ymd(2016, 10, 30).and_hms(2, 0, 0); } }