erlang_iso8601

Formats and parses ISO 8601 dates.

Usage

Add it to your rebar.config deps:

{'iso8601',    ".*",    {git, "git@github.com:seansawyer/erlang_iso8601.git", {tag, "1.1.1"}}}

Format a timestamp or calendar datetime tuple:

> iso8601:format(now()).
<<"2012-02-16T01:06:19Z">>
> iso8601:format(calendar:universal_time()).
<<"2012-02-16T01:06:48Z">>

Parse a date string or binary:

> iso8601:parse(<<"2012-02-16T01:06:48Z">>).
{{2012,2,16},{1,6,48}}
> iso8601:parse("2012-02-16T01:06:48Z").    
{{2012,2,16},{1,6,48}}

Add 1 hour, 2 minutes and 3 seconds to a datetime tuple:

> Datetime = iso8601:parse(<<"2012-02-16T01:06:48Z">>).
{{2012,2,16},{1,6,48}}
> iso8601:add_time(Datetime, 1, 2, 3).
{{2012,2,16},{2,8,51}}

Get interval datetimes list examples:

> Intervals = iso8601:parse_interval("R5/2008-03-01T13:00:00Z/P1Y2M10DT2H30M").
[{{2009,5,11},{15,30,0}},
 {{2010,7,21},{18,0,0}},
 {{2011,10,1},{20,30,0}},
 {{2013,12,11},{23,0,0}},
 {{2015,2,22},{1,30,0}}] 
> Intervals = iso8601:parse_interval("2008-03-01T13:00:00Z/P1Y2M10DT2H30M").
> Intervals = iso8601:parse_interval("R5/P1Y2M10DT2H30M").
> Intervals = iso8601:parse_interval("R5/P1Y/2008-03-01T13:00:00Z").

Known deficiencies

• Does not support expanded year representation.
• Does not support fractional times.
• Does not support ordinal dates.

See the open issues for more info.