datetime

A minimal datetime converter for zepto, more or less based on Python datetime (or heavily inspired by it).

It is not done yet (i.e. time zones are probably implemented wrongfully).

Usage

The following endpoints are exposed:

(define x 
  (datetime:make-datetime 2015 8 2 #{"hours" 15 "minutes" 58 "seconds" 12 "useconds" 12 "tmz" "GMT"}))
; the hash-map is optional (you can specify 0-all args in all combinations)
(datetime:to-ordinal x)
; returns the gregorian ordinal for the datetime object
(datetime:from-ordinal 120)
; returns a datetime object based on the ordinal
(datetime:weekday x)
; gets the datetimes weekday (0-indexed)
(datetime:weekday-string x)
; gets the weekday string
(datetime:month-string x)
; gets the month string
(datetime:to-unix-timestamp x)
; returns an unix timestamp based on the
(datetime:from-unix-timestamp 14378000)
; returns a datetime object based on the unix timestamp
(datetime:to-string x)
; returns a string akin to the bash date command, like so: Sun 2 Aug 2015 15:58:12.000012 GMT

Please not that information about timezone and µseconds gets lost when doing something akin to:

(datetime:from-unix-timestamp (datetime:to-unix-timestamp foo-date))

This is due to the nature of unix timestamps.

Example

A silly, contrived example script:

(load "zpbash.zp")
(load "datetime.zp")

(datetime:from-unix-timestamp (bash:unix-timestamp))
; this will probably be wrong if you are not okay with UTC/GMT.
; Where I live for example (Berlin CET, +1 hour), this is
; exactly 1 hour behind (2 in the summer because of DST).

Have fun!