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Ruby parser to work with ISO8601 dateTimes and durations — http://en.wikipedia.org/wiki/ISO_8601

branch: master
README.md

ISO8601

ISO8601 is a simple implementation of the ISO 8601 (Data elements and interchange formats — Information interchange — Representation of dates and times) standard.

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Duration sign

Because Durations and DateTime has a substraction method, Durations has sign to be able to represent a negative value:

(ISO8601::Duration.new('PT10S') - ISO8601::Duration.new('PT12S')).to_s #=> '-PT2S'
(ISO8601::Duration.new('-PT10S') + ISO8601::Duration.new('PT12S')).to_s #=> 'PT2S'

Separators

Although, the spec allows three separator types: period (.), comma (,), and raised period (·) by now I keep just the period option.

Century treatment

The specification says that you can express a reduced precision year just giving the century (i.e. '20' to refer the inclusive range 2000-2999).

This implementation expands the century to the first value for its range so:

ISO8601::DateTime.new('20').century # => 20
ISO8601::DateTime.new('20').year # => 2000

TODO

  • Decimal fraction in dateTime patterns
  • Recurring time intervals
  • Ordinal date pattern (YYYY-DDD)
  • Week date pattern (YYYY-Www-D)
  • Treat the 201005 as 2000-10-05 instead of 2010-05

Contributors

License

Arnau Siches under the MIT License

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