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android / platform / external / rust / crates / chrono / refs/heads/main
commit87474cffdf75aff513ca71fa8dca9648bd943545[log] [tgz]
authorJames Farrell <[email protected]>Thu Oct 03 16:01:13 2024 +0000
committerJames Farrell <[email protected]>Thu Oct 03 16:01:13 2024 +0000
tree4b58cd2531572b947e23e079af4e61fbbebedb32
parentdf38949b9cfa300bf96065648aeb75fc731a1d2f [diff]
Migrate 13 crates to monorepo

chrono
codespan-reporting
config
configparser
csv
csv-core
debug_tree
downcast
drm-ffi
drm-fourcc
fnv
form_urlencoded
futures-channel

Bug: http://b/339424309
Test: treehugger
Change-Id: I379d14b28a04485493eef782df430d87bdbf3fd4
3 files changed
tree: 4b58cd2531572b947e23e079af4e61fbbebedb32
  1. .github/
  2. src/
  3. tests/
  4. LICENSE ⇨ LICENSE.txt
  5. .cargo_vcs_info.json
  6. .git-ignore-revs
  7. .gitignore
  8. Android.bp
  9. appveyor.yml
  10. Cargo.toml
  11. Cargo.toml.orig
  12. CHANGELOG.md
  13. CITATION.cff
  14. deny.toml
  15. LICENSE.txt
  16. METADATA
  17. MODULE_LICENSE_APACHE2
  18. OWNERS
  19. README.md
  20. rustfmt.toml
  21. taplo.toml
README.md

Chrono: Timezone-aware date and time handling

Chrono GitHub Actions Chrono on crates.io Chrono on docs.rs Chat codecov.io

Chrono aims to provide all functionality needed to do correct operations on dates and times in the proleptic Gregorian calendar:

  • The DateTime type is timezone-aware by default, with separate timezone-naive types.
  • Operations that may produce an invalid or ambiguous date and time return Option or LocalResult.
  • Configurable parsing and formatting with an strftime inspired date and time formatting syntax.
  • The Local timezone works with the current timezone of the OS.
  • Types and operations are implemented to be reasonably efficient.

Timezone data is not shipped with chrono by default to limit binary sizes. Use the companion crate Chrono-TZ or tzfile for full timezone support.

Documentation

See docs.rs for the API reference.

Limitations

  • Only the proleptic Gregorian calendar (i.e. extended to support older dates) is supported.
  • Date types are limited to about +/- 262,000 years from the common epoch.
  • Time types are limited to nanosecond accuracy.
  • Leap seconds can be represented, but Chrono does not fully support them. See Leap Second Handling.

Crate features

Default features:

  • alloc: Enable features that depend on allocation (primarily string formatting)
  • std: Enables functionality that depends on the standard library. This is a superset of alloc and adds interoperation with standard library types and traits.
  • clock: Enables reading the local timezone (Local). This is a superset of now.
  • now: Enables reading the system time (now)
  • wasmbind: Interface with the JS Date API for the wasm32 target.

Optional features:

  • serde: Enable serialization/deserialization via serde.
  • rkyv: Enable serialization/deserialization via rkyv.
  • rustc-serialize: Enable serialization/deserialization via rustc-serialize (deprecated).
  • arbitrary: construct arbitrary instances of a type with the Arbitrary crate.
  • unstable-locales: Enable localization. This adds various methods with a _localized suffix. The implementation and API may change or even be removed in a patch release. Feedback welcome.

Rust version requirements

The Minimum Supported Rust Version (MSRV) is currently Rust 1.61.0.

The MSRV is explicitly tested in CI. It may be bumped in minor releases, but this is not done lightly.

License

This project is licensed under either of

at your option.