updated docs for RFC2822/3339 and added ChangeLog.
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@ -4,6 +4,7 @@ and also the following people (in ascending order):
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Colin Ray <r.colinray@gmail.com>
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David Ross <daboross@daboross.net>
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Eunchong Yu <kroisse@gmail.com>
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John Nagle <nagle@sitetruth.com>
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Ken Tossell <ken@tossell.net>
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Steve Klabnik <steve@steveklabnik.com>
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klutzy <klutzytheklutzy@gmail.com>
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@ -0,0 +1,145 @@
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ChangeLog for Chrono
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====================
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This documents all notable changes to [Chrono](https://github.com/lifthrasiir/rust-chrono).
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Chrono obeys the principle of [Semantic Versioning](http://semver.org/).
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There were/are numerous minor versions before 1.0 due to the language changes.
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Versions with only mechnical changes will be omitted from the following list.
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## 0.2.0 (UNRELEASED)
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### Added
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- `Offset` is splitted into `TimeZone` (constructor) and `Offset` (storage) types.
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You would normally see only the former, as the latter is mostly an implementation detail.
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Most importantly, `Local` now can be used to directly construct timezone-aware values.
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Some types (currently, `UTC` and `FixedOffset`) are both `TimeZone` and `Offset`,
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but others aren't (e.g. `Local` is not what is being stored to each `DateTime` values).
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- `LocalResult::map` convenience method has been added.
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- `TimeZone` now allows a construction of `DateTime` values from UNIX timestamp,
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via `timestamp` and `timestamp_opt` methods.
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- `TimeZone` now also has a method for parsing `DateTime`, namely `datetime_from_str`.
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- The following methods have been added to all date and time types:
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- `checked_add`
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- `checked_sub`
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- `format_with_items`
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- The following methods have been added to all timezone-aware types:
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- `timezone`
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- `with_timezone`
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- `naive_utc`
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- `naive_local`
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- `parse_from_str` method has been added to all naive types and `DateTime<FixedOffset>`.
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- All naive types and instances of `DateTime` with time zones `UTC`, `Local` and `FixedOffset`
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implement the `FromStr` trait. They parse what `std::fmt::Debug` would print.
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- `chrono::format` has been greatly rewritten.
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- The formatting syntax parser is modular now, available at `chrono::format::strftime`.
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- The parser and resolution algorithm is also modular, the former is available at
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`chrono::format::parse` while the latter is available at `chrono::format::parsed`.
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- Explicit support for RFC 2822 and 3339 syntaxes is landed.
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- There is a minor formatting difference with atypical values,
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e.g. for years not between 1 BCE and 9999 CE.
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### Changed
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- Most uses of `Offset` are converted to `TimeZone`.
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In fact, *all* user-facing code is expected to be `Offset`-free.
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- `[Naive]DateTime::*num_seconds_from_unix_epoch*` methods have been renamed to
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simply `timestamp` or `from_timestamp*`. The original names have been deprecated.
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### Removed
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- `Time` has been removed. This also prompts a related set of methods in `TimeZone`.
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This is in principle possible, but in practice has seen a little use
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because it can only be meaningfully constructed via an existing `DateTime` value.
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This made many operations to `Time` unintuitive or ambiguous,
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so we simply let it go.
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In the case that `Time` is really required, one can use a simpler `NaiveTime`.
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`NaiveTime` and `NaiveDate` can be freely combined and splitted,
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and `TimeZone::from_{local,utc}_datetime` can be used to convert from/to the local time.
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- `with_offset` method has been removed. Use `with_timezone` method instead.
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(This is not deprecated since it is an integral part of offset reform.)
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## 0.1.14 (2015-01-10)
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### Added
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- Added a missing `std::fmt::String` impl for `Local`.
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## 0.1.13 (2015-01-10)
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### Changed
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- Most types now implement both `std::fmt::Show` and `std::fmt::String`,
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with the former used for the stricter output and the latter used for more casual output.
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### Removed
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- `Offset::name` has been replaced by a `std::fmt::String` implementation to `Offset`.
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## 0.1.12 (2015-01-08)
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### Removed
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- `Duration + T` no longer works due to the updated impl reachability rules.
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Use `T + Duration` as a workaround.
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## 0.1.4 (2014-12-13)
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### Fixed
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- Fixed a bug that `Date::and_*` methods with an offset that can change the date are
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off by one day.
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## 0.1.3 (2014-11-28)
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### Added
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- `{Date,Time,DateTime}::with_offset` methods have been added.
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- `LocalResult` now implements a common set of traits.
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- `LocalResult::and_*` methods have been added.
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They are useful for safely chaining `LocalResult<Date<Off>>` methods
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to make `LocalResult<DateTime<Off>>`.
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### Changed
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- `Offset::name` now returns `SendStr`.
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- `{Date,Time} - Duration` overloadings are now allowed.
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## 0.1.2 (2014-11-24)
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### Added
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- `Duration + Date` overloading is now allowed.
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### Changed
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- Chrono no longer needs `num` dependency.
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## 0.1.0 (2014-11-20)
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The initial version that was available to `crates.io`.
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18
README.md
18
README.md
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@ -138,7 +138,9 @@ assert_eq!(UTC.ymd(1970, 1, 1).and_hms(0, 0, 0) - Duration::seconds(1_000_000_00
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Formatting is done via the `format` method,
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which format is equivalent to the familiar `strftime` format.
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(See the `format::strftime` module documentation for full syntax.)
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The default `to_string` method and `{:?}` specifier also give a reasonable representation.
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Chrono also provides `to_rfc{2822,3339}` methods for well-known formats.
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~~~~ {.rust}
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use chrono::*;
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@ -149,6 +151,8 @@ assert_eq!(dt.format("%a %b %e %T %Y").to_string(), "Fri Nov 28 12:00:09 2014");
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assert_eq!(dt.format("%a %b %e %T %Y").to_string(), dt.format("%c").to_string());
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assert_eq!(dt.to_string(), "2014-11-28 12:00:09 UTC");
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assert_eq!(dt.to_rfc2822(), "Fri, 28 Nov 2014 12:00:09 +0000");
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assert_eq!(dt.to_rfc3339(), "2014-11-28T12:00:09+00:00");
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assert_eq!(format!("{:?}", dt), "2014-11-28T12:00:09Z");
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~~~~
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@ -163,6 +167,7 @@ Parsing can be done with three methods:
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returns `DateTime<FixedOffset>`.
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This should be used when the offset is a part of input and the caller cannot guess that.
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It *cannot* be used when the offset can be missing.
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`DateTime::parse_from_rfc{2822,3339}` are similar but for well-known formats.
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3. `Offset::datetime_from_str` is similar but returns `DateTime` of given offset.
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When the explicit offset is missing from the input, it simply uses given offset.
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@ -182,12 +187,14 @@ assert_eq!("2014-11-28T21:00:09+09:00".parse::<DateTime<UTC>>(), Ok(dt.clone()))
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assert_eq!("2014-11-28T21:00:09+09:00".parse::<DateTime<FixedOffset>>(), Ok(fixed_dt.clone()));
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// method 2
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assert_eq!(UTC.datetime_from_str("2014-11-28 12:00:09", "%Y-%m-%d %H:%M:%S"), Ok(dt.clone()));
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assert_eq!(UTC.datetime_from_str("Fri Nov 28 12:00:09 2014", "%a %b %e %T %Y"), Ok(dt.clone()));
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// method 3
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assert_eq!(DateTime::parse_from_str("2014-11-28 21:00:09 +09:00", "%Y-%m-%d %H:%M:%S %z"),
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Ok(fixed_dt.clone()));
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assert_eq!(DateTime::parse_from_rfc2822("Fri, 28 Nov 2014 21:00:09 +0900"), Ok(fixed_dt.clone()));
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assert_eq!(DateTime::parse_from_rfc3339("2014-11-28T21:00:09+09:00"), Ok(fixed_dt.clone()));
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// method 3
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assert_eq!(UTC.datetime_from_str("2014-11-28 12:00:09", "%Y-%m-%d %H:%M:%S"), Ok(dt.clone()));
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assert_eq!(UTC.datetime_from_str("Fri Nov 28 12:00:09 2014", "%a %b %e %T %Y"), Ok(dt.clone()));
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// oops, the year is missing!
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assert!(UTC.datetime_from_str("Fri Nov 28 12:00:09", "%a %b %e %T %Y").is_err());
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assert_eq!(UTC.ymd(2014, 11, 28).weekday(), Weekday::Fri);
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assert_eq!(UTC.ymd_opt(2014, 11, 31), LocalResult::None);
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assert_eq!(UTC.hms_milli(7, 8, 9, 10).format("%H%M%S").to_string(), "070809");
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assert_eq!(UTC.ymd(2014, 11, 28).and_hms_milli(7, 8, 9, 10).format("%H%M%S").to_string(),
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"070809");
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~~~~
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`DateTime` has two methods, `date` and `time`,
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15
src/lib.rs
15
src/lib.rs
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Formatting is done via the `format` method,
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which format is equivalent to the familiar `strftime` format.
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(See the `format::strftime` module documentation for full syntax.)
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The default `to_string` method and `{:?}` specifier also give a reasonable representation.
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Chrono also provides `to_rfc{2822,3339}` methods for well-known formats.
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~~~~ {.rust}
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use chrono::*;
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assert_eq!(dt.format("%a %b %e %T %Y").to_string(), dt.format("%c").to_string());
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assert_eq!(dt.to_string(), "2014-11-28 12:00:09 UTC");
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assert_eq!(dt.to_rfc2822(), "Fri, 28 Nov 2014 12:00:09 +0000");
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assert_eq!(dt.to_rfc3339(), "2014-11-28T12:00:09+00:00");
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assert_eq!(format!("{:?}", dt), "2014-11-28T12:00:09Z");
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~~~~
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returns `DateTime<FixedOffset>`.
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This should be used when the offset is a part of input and the caller cannot guess that.
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It *cannot* be used when the offset can be missing.
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`DateTime::parse_from_rfc{2822,3339}` are similar but for well-known formats.
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3. `Offset::datetime_from_str` is similar but returns `DateTime` of given offset.
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When the explicit offset is missing from the input, it simply uses given offset.
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assert_eq!("2014-11-28T21:00:09+09:00".parse::<DateTime<FixedOffset>>(), Ok(fixed_dt.clone()));
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// method 2
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assert_eq!(UTC.datetime_from_str("2014-11-28 12:00:09", "%Y-%m-%d %H:%M:%S"), Ok(dt.clone()));
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assert_eq!(UTC.datetime_from_str("Fri Nov 28 12:00:09 2014", "%a %b %e %T %Y"), Ok(dt.clone()));
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// method 3
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assert_eq!(DateTime::parse_from_str("2014-11-28 21:00:09 +09:00", "%Y-%m-%d %H:%M:%S %z"),
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Ok(fixed_dt.clone()));
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assert_eq!(DateTime::parse_from_rfc2822("Fri, 28 Nov 2014 21:00:09 +0900"), Ok(fixed_dt.clone()));
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assert_eq!(DateTime::parse_from_rfc3339("2014-11-28T21:00:09+09:00"), Ok(fixed_dt.clone()));
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// method 3
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assert_eq!(UTC.datetime_from_str("2014-11-28 12:00:09", "%Y-%m-%d %H:%M:%S"), Ok(dt.clone()));
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assert_eq!(UTC.datetime_from_str("Fri Nov 28 12:00:09 2014", "%a %b %e %T %Y"), Ok(dt.clone()));
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// oops, the year is missing!
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assert!(UTC.datetime_from_str("Fri Nov 28 12:00:09", "%a %b %e %T %Y").is_err());
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