joevandyk / iso8601

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

ISO8601

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

Comments

Because Durations and DateTime has substract method, Durations has sign 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"

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

TODO

• Decimal fraction in dateTime patterns
• Recurring time intervals
• Ordinal date pattern (YYYY-DDD)
• Week date pattern (YYYY-Www-D)

Contributors

• Nick Lynch
• Pelle Braendgaard
• Takahiro Noda
• Porras

Credits

Arnau Siches under LGPL license. LICENSE file for details.