文件列表:

LICENSE (1402, 2019-01-18)
chronicity-test.asd (1015, 2019-01-18)
chronicity.asd (1968, 2019-01-18)
chronicity.org (431, 2019-01-18)
numerization.org (513, 2019-01-18)
repeaters.org (429, 2019-01-18)
src (0, 2019-01-18)
src\chronicity.lisp (6822, 2019-01-18)
src\datetime.lisp (7751, 2019-01-18)
src\grabber.lisp (704, 2019-01-18)
src\handler-defs.lisp (12002, 2019-01-18)
src\handlers.lisp (7398, 2019-01-18)
src\numerize.lisp (5775, 2019-01-18)
src\ordinal.lisp (1048, 2019-01-18)
src\packages.lisp (962, 2019-01-18)
src\pointer.lisp (832, 2019-01-18)
src\repeater.lisp (4482, 2019-01-18)
src\repeaters (0, 2019-01-18)
src\repeaters\repeater-day-name.lisp (1042, 2019-01-18)
src\repeaters\repeater-day-portion.lisp (3507, 2019-01-18)
src\repeaters\repeater-day.lisp (1196, 2019-01-18)
src\repeaters\repeater-fortnight.lisp (1455, 2019-01-18)
src\repeaters\repeater-hour.lisp (1382, 2019-01-18)
src\repeaters\repeater-minute.lisp (1424, 2019-01-18)
src\repeaters\repeater-month-name.lisp (1612, 2019-01-18)
src\repeaters\repeater-month.lisp (1298, 2019-01-18)
src\repeaters\repeater-second.lisp (1012, 2019-01-18)
src\repeaters\repeater-time.lisp (4965, 2019-01-18)
src\repeaters\repeater-week.lisp (1415, 2019-01-18)
src\repeaters\repeater-weekend.lisp (2450, 2019-01-18)
src\repeaters\repeater-year.lisp (1385, 2019-01-18)
src\scalar.lisp (2327, 2019-01-18)
src\separator.lisp (1690, 2019-01-18)
src\utils.lisp (494, 2019-01-18)
test (0, 2019-01-18)
test\datetime.lisp (5819, 2019-01-18)
test\lisp-unit.lisp (14771, 2019-01-18)
test\numerize.lisp (2101, 2019-01-18)
... ...

# Chronicity A natural language date and time parser for Common Lisp. Inspired by (and copied verbatim from) from [Chronic][], the natural language date and time parser for Ruby by Tom Preston-Werner. [Chronic]: http://chronic.rubyforge.org/ To understand how Chronicity works, read this post: [Writing a natural language date and time parser](https://lisper.in/nlp-date-parser) ## Download and Installation Use [quicklisp][]: (ql:quickload "chronicity") Or get the cutting-edge version from github: https://github.com/chaitanyagupta/chronicity/tree/master Or get the latest stable release (usually updates before quicklisp): https://github.com/chaitanyagupta/chronicity/releases [quicklisp]: https://www.quicklisp.org ## Usage Use `CHRONICITY:PARSE` to parse date/time strings. If `*NOW*` is not set, "now" is assumed to be this instant. All relative date/time calculations are made with respect to `*NOW*`. (setf chronicity:*now* (chronicity:make-datetime 2009 3 27 12 34 56)) => @2009-03-27T12:34:56.000000+05:30 (chronicity:parse "today") => @2009-03-27T13:00:00.000000+05:30 (chronicity:parse "tomorrow" :now (chronicity:make-date 2009 1 1)) => @2009-01-02T00:00:00.000000+05:30 (chronicity:parse "3 days from now") => @2009-03-30T12:34:56.000000+05:30 (chronicity:parse "next month") => @2009-04-01T00:00:00.000000+05:30 `:ENDIAN-PREFERENCE` indicates which date format to prefer in case of ambiguity over days and months. `:LITTLE` indicates the format "dd/mm/yyyy", `:MIDDLE` indicates "mm/dd/yyy". Default is :LITTLE. (chronicity:parse "1/2/2003") => @2003-02-01T00:00:00.000000+05:30 (chronicity:parse "1/2/2003" :endian-preference :middle) => @2003-01-02T00:00:00.000000+05:30 Default value for `:CONTEXT` is `:FUTURE`. (chronicity:parse "April 1st at 12:30 PM") => @2009-04-01T12:30:00.000000+05:30 (chronicity:parse "April 1st at 12:30 PM" :context :past) => @2008-04-01T12:30:00.000000+05:30 `CHRONICITY:PARSE` usually returns a DATETIME object. Its attributes can be accessed using the datetime readers. (chronicity:parse "next month" :guess :end) => @2009-04-30T23:59:59.000000+05:30 (values (chronicity:year-of *) (chronicity:month-of *) (chronicity:day-of *) (chronicity:hour-of *) (chronicity:minute-of *) (chronicity:sec-of *)) => 2009, 4, 30, 23, 59, 59 Passing `NIL` as the value for `:GUESS` returns a `SPAN`, which is a range of datetime values. (chronicity:parse "next month" :guess nil) => # (values (chronicity:span-start *) (chronicity:span-end *) (chronicity:span-end-included-p *)) => @2009-04-01T00:00:00.000000+05:30, @2009-05-01T00:00:00.000000+05:30, NIL Other possible values are `:START`, `:MIDDLE`, or `:END` which return the start, mid-point or the end of a span respectively. ## Input Examples Simple thursday november summer friday 13:00 mon 2:35 4pm 6 in the morning friday 1pm sat 7 in the evening yesterday today tomorrow this tuesday next month this morning last night this second yesterday at 4:00 last friday at 20:00 last week tuesday tomorrow at 6:45pm afternoon yesterday thursday last week Complex 3 years ago 5 months before now 7 hours ago 7 days from now 1 week hence in 3 hours 1 year ago tomorrow 3 months ago saturday at 5:00 pm 7 hours before tomorrow at noon 3rd wednesday in november 3rd month next year 3rd thursday this september 4th day last week Specific Dates January 5 dec 25 may 27th October 2006 oct 06 jan 3 2010 february 14, 2004 3 jan 2000 17 april 85 5/27/1979 27/5/1979 05/06 1979-05-27 Friday 5 4:00 17:00 0800 Specific Times (many of the above with an added time) January 5 at 7pm 1979-05-27 05:00:00 etc ## Limitations Chronicity only works with the current timezone (as returned by `LOCAL-TIME:*DEFAULT-TIMEZONE*`) . Support for different timezones is planned for a future release. The datetime object(s) returned by the parser are of type `LOCAL-TIME:TIMESTAMP`. Be aware of any limitations that may apply to them. Another problem is that parsing ordinals as words is supported except for `second`, which is ambiguous with second the unit of time. This should be fixed in a future release.

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