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to-iso-8601-date.r

REBOL [ Title: "to-iso8601-date" Version: 1.1.1 Date: 26-01-2005 Author: "Peter WA Wood" Copyright: "Peter WA Wood" File: %to-iso-8601-date.r Purpose: {A function which converts a Rebol date! to a string which complies with ISO 8601. If the time is not provided, a default of 00:00 is used. Truncates any milli-seconds. (NB The zone defaults to 00:00 in a Rebol date) } Usage: { example: to-iso8601-date rebol-date } Library: [ level: 'beginner type: 'function domain: [web ] platform: 'all tested-under: [ core 2.5.6.2.4 "Mac OS X 10.2.8" core 2.5.6.3.1 "Windows XP Professional" view 1.3.10.2.1 "Windows XP Professional" ] support: none license: cc-by {see htt4p://www.rebol.org/cgi-bin/cgiwrap/rebol/license-help.r} ] ] to-iso8601-date: func [ {converts a date! to a string which complies with the ISO 8602 standard. If the time is not set on the input date, a default of 00:00 is used. } the-date [date!] "The date to be reformatted" /local iso-date "The string to be returned" ][ iso-date: copy "" either the-date/time [ ; the date has a time insert iso-date rejoin [ " " either the-date/time/hour > 9 ; insert leading zero if [the-date/time/hour] ; needed [join "0" [the-date/time/hour]] ":" either the-date/time/minute > 9 [the-date/time/minute] [join "0" [the-date/time/minute]] ":" either the-date/time/second > 9 ; Rebol only returns [to-integer the-date/time/second] ; seconds if non-zero [join "0" [to-integer the-date/time/second]] either the-date/zone = 0:00 [ "Z" ; UTC ][ rejoin [ either the-date/zone/hour > 0 ; + or - UTC ["+"] ["-"] either (absolute the-date/zone/hour) < 10 [join "0" [absolute the-date/zone/hour]] [absolute the-date/zone/hour] either the-date/zone/minute < 10 [join "0" [the-date/zone/minute]] [the-date/zone/minute] ] ] ] ; end insert ][ iso-date: " 00:00:00Z" ; the date has no time ] insert iso-date rejoin [ join copy/part "000" (4 - length? to-string the-date/year) [the-date/year] "-" either the-date/month > 9 [the-date/month] [join "0" [the-date/month]] "-" either the-date/day > 9 [the-date/day] [join "0" [the-date/day]] ] ; end insert return head iso-date ] ; end to-fussy-idate ;; History ;; ;; 1.0.0 24-Jan-2005 Initial release (no optimisation) ;; 1.1.0 26-Jan-2005 Ignore milli-seconds if precise time set ;; 1.1.1 18-Apr-2205 Tested under View 1.2.10.3.1 Windows XP ;;
halt ;; to terminate script if DO'ne from webpage