1 ! Copyright (C) 2007 Doug Coleman.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays classes.tuple combinators
4 combinators.short-circuit kernel locals math math.functions
5 math.order sequences summary system threads vocabs.loader ;
8 HOOK: gmt-offset os ( -- hours minutes seconds )
10 HOOK: gmt os ( -- timestamp )
20 C: <duration> duration
22 : instant ( -- duration ) 0 0 0 0 0 0 <duration> ;
31 { gmt-offset duration } ;
33 C: <timestamp> timestamp
35 : gmt-offset-duration ( -- duration )
36 0 0 0 gmt-offset <duration> ;
38 : <date> ( year month day -- timestamp )
39 0 0 0 gmt-offset-duration <timestamp> ;
41 : <date-gmt> ( year month day -- timestamp )
42 0 0 0 instant <timestamp> ;
44 : <year> ( year -- timestamp )
47 : <year-gmt> ( year -- timestamp )
51 M: not-a-month summary
52 drop "Months are indexed starting at 1" ;
56 : check-month ( n -- n )
57 [ not-a-month ] when-zero ;
63 "January" "February" "March" "April" "May" "June"
64 "July" "August" "September" "October" "November" "December"
69 : (month-name) ( n -- string ) 1 - month-names nth ;
73 GENERIC: month-name ( obj -- string )
75 M: integer month-name check-month 1 - month-names nth ;
76 M: timestamp month-name month>> 1 - month-names nth ;
78 CONSTANT: month-abbreviations
80 "Jan" "Feb" "Mar" "Apr" "May" "Jun"
81 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"
84 : month-abbreviation ( n -- string )
85 check-month 1 - month-abbreviations nth ;
87 CONSTANT: day-counts { 0 31 28 31 30 31 30 31 31 30 31 30 31 }
90 { "Sunday" "Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday" }
92 CONSTANT: day-abbreviations2
93 { "Su" "Mo" "Tu" "We" "Th" "Fr" "Sa" }
95 : day-abbreviation2 ( n -- string )
96 day-abbreviations2 nth ; inline
98 CONSTANT: day-abbreviations3
99 { "Sun" "Mon" "Tue" "Wed" "Thu" "Fri" "Sat" }
101 : day-abbreviation3 ( n -- string )
102 day-abbreviations3 nth ; inline
104 CONSTANT: average-month 30+5/12
105 CONSTANT: months-per-year 12
106 CONSTANT: days-per-year 3652425/10000
107 CONSTANT: hours-per-year 876582/100
108 CONSTANT: minutes-per-year 5259492/10
109 CONSTANT: seconds-per-year 31556952
111 :: julian-day-number ( year month day -- n )
112 #! Returns a composite date number
113 #! Not valid before year -4800
114 14 month - 12 /i :> a
116 month 12 a * + 3 - :> m
118 day 153 m * 2 + 5 /i + 365 y * +
119 y 4 /i + y 100 /i - y 400 /i + 32045 - ;
121 :: julian-day-number>date ( n -- year month day )
122 #! Inverse of julian-day-number
124 4 a * 3 + 146097 /i :> b
125 a 146097 b * 4 /i - :> c
126 4 c * 3 + 1461 /i :> d
127 c 1461 d * 4 /i - :> e
128 5 e * 2 + 153 /i :> m
133 e 153 m * 2 + 5 /i - 1 + ;
135 GENERIC: easter ( obj -- obj' )
137 :: easter-month-day ( year -- month day )
139 year 100 /mod :> ( b c )
143 19 a * b + d - g - 15 + 30 mod :> h
145 32 2 e * + 2 i * + h - k - 7 mod :> l
146 a 11 h * + 22 l * + 451 /i :> m
148 h l + 7 m * - 114 + 31 /mod 1 + ;
150 M: integer easter ( year -- timestamp )
151 dup easter-month-day <date> ;
153 M: timestamp easter ( timestamp -- timestamp )
155 dup year>> easter-month-day
156 swapd >>day swap >>month ;
158 : >date< ( timestamp -- year month day )
159 [ year>> ] [ month>> ] [ day>> ] tri ;
161 : >time< ( timestamp -- hour minute second )
162 [ hour>> ] [ minute>> ] [ second>> ] tri ;
164 : years ( x -- duration ) instant clone swap >>year ;
165 : months ( x -- duration ) instant clone swap >>month ;
166 : days ( x -- duration ) instant clone swap >>day ;
167 : weeks ( x -- duration ) 7 * days ;
168 : hours ( x -- duration ) instant clone swap >>hour ;
169 : minutes ( x -- duration ) instant clone swap >>minute ;
170 : seconds ( x -- duration ) instant clone swap >>second ;
171 : milliseconds ( x -- duration ) 1000 / seconds ;
172 : microseconds ( x -- duration ) 1000000 / seconds ;
173 : nanoseconds ( x -- duration ) 1000000000 / seconds ;
175 GENERIC: leap-year? ( obj -- ? )
177 M: integer leap-year? ( year -- ? )
178 dup 100 divisor? 400 4 ? divisor? ;
180 M: timestamp leap-year? ( timestamp -- ? )
185 GENERIC: +year ( timestamp x -- timestamp )
186 GENERIC: +month ( timestamp x -- timestamp )
187 GENERIC: +day ( timestamp x -- timestamp )
188 GENERIC: +hour ( timestamp x -- timestamp )
189 GENERIC: +minute ( timestamp x -- timestamp )
190 GENERIC: +second ( timestamp x -- timestamp )
192 : /rem ( f n -- q r )
193 #! q is positive or negative, r is positive from 0 <= r < n
194 [ / floor >integer ] 2keep rem ;
196 : float>whole-part ( float -- int float )
197 [ floor >integer ] keep over - ;
199 : adjust-leap-year ( timestamp -- timestamp )
201 { [ day>> 29 = ] [ month>> 2 = ] [ leap-year? not ] } 1&&
202 [ 3 >>month 1 >>day ] when ;
204 M: integer +year ( timestamp n -- timestamp )
205 [ + ] curry change-year adjust-leap-year ;
207 M: real +year ( timestamp n -- timestamp )
208 [ float>whole-part swapd days-per-year * +day swap +year ] unless-zero ;
210 : months/years ( n -- months years )
211 12 /rem [ 1 - 12 ] when-zero swap ; inline
213 M: integer +month ( timestamp n -- timestamp )
214 [ over month>> + months/years [ >>month ] dip +year ] unless-zero ;
216 M: real +month ( timestamp n -- timestamp )
217 [ float>whole-part swapd average-month * +day swap +month ] unless-zero ;
219 M: integer +day ( timestamp n -- timestamp )
221 over >date< julian-day-number + julian-day-number>date
222 [ >>year ] [ >>month ] [ >>day ] tri*
225 M: real +day ( timestamp n -- timestamp )
226 [ float>whole-part swapd 24 * +hour swap +day ] unless-zero ;
228 : hours/days ( n -- hours days )
231 M: integer +hour ( timestamp n -- timestamp )
232 [ over hour>> + hours/days [ >>hour ] dip +day ] unless-zero ;
234 M: real +hour ( timestamp n -- timestamp )
235 float>whole-part swapd 60 * +minute swap +hour ;
237 : minutes/hours ( n -- minutes hours )
240 M: integer +minute ( timestamp n -- timestamp )
241 [ over minute>> + minutes/hours [ >>minute ] dip +hour ] unless-zero ;
243 M: real +minute ( timestamp n -- timestamp )
244 [ float>whole-part swapd 60 * +second swap +minute ] unless-zero ;
246 : seconds/minutes ( n -- seconds minutes )
247 60 /rem swap >integer ;
249 M: number +second ( timestamp n -- timestamp )
250 [ over second>> + seconds/minutes [ >>second ] dip +minute ] unless-zero ;
252 : (time+) ( timestamp duration -- timestamp' duration )
253 [ second>> +second ] keep
254 [ minute>> +minute ] keep
255 [ hour>> +hour ] keep
257 [ month>> +month ] keep
258 [ year>> +year ] keep ; inline
260 : +slots ( obj1 obj2 quot -- n obj1 obj2 )
261 [ bi@ + ] curry 2keep ; inline
265 GENERIC# time+ 1 ( time1 time2 -- time3 )
268 [ clone ] dip (time+) drop ;
283 : duration>years ( duration -- x )
284 #! Uses average month/year length since duration loses calendar
289 [ month>> months-per-year / + ]
290 [ day>> days-per-year / + ]
291 [ hour>> hours-per-year / + ]
292 [ minute>> minutes-per-year / + ]
293 [ second>> seconds-per-year / + ]
296 M: duration <=> [ duration>years ] compare ;
298 : duration>months ( duration -- x ) duration>years months-per-year * ;
299 : duration>days ( duration -- x ) duration>years days-per-year * ;
300 : duration>hours ( duration -- x ) duration>years hours-per-year * ;
301 : duration>minutes ( duration -- x ) duration>years minutes-per-year * ;
302 : duration>seconds ( duration -- x ) duration>years seconds-per-year * ;
303 : duration>milliseconds ( duration -- x ) duration>seconds 1000 * ;
304 : duration>microseconds ( duration -- x ) duration>seconds 1000000 * ;
305 : duration>nanoseconds ( duration -- x ) duration>seconds 1000000000 * ;
307 GENERIC: time- ( time1 time2 -- time3 )
309 : convert-timezone ( timestamp duration -- timestamp' )
310 over gmt-offset>> over = [ drop ] [
311 [ over gmt-offset>> time- time+ ] keep >>gmt-offset
314 : >local-time ( timestamp -- timestamp' )
315 gmt-offset-duration convert-timezone ;
317 : >gmt ( timestamp -- timestamp' )
318 instant convert-timezone ;
320 M: timestamp <=> ( ts1 ts2 -- n )
321 [ >gmt tuple-slots ] compare ;
323 : same-day? ( ts1 ts2 -- ? )
324 [ >gmt >date< <date> ] bi@ = ;
326 : (time-) ( timestamp timestamp -- n )
328 [ [ >date< julian-day-number ] bi@ - 86400 * ] 2keep
329 [ >time< [ [ 3600 * ] [ 60 * ] bi* ] dip + + ] bi@ - + ;
332 #! Exact calendar-time difference
335 : time* ( obj1 obj2 -- obj3 )
336 dup real? [ swap ] when
348 : before ( duration -- -duration )
354 : <zero> ( -- timestamp )
355 0 0 0 0 0 0 instant <timestamp> ;
357 : valid-timestamp? ( timestamp -- ? )
358 clone instant >>gmt-offset
359 dup <zero> time- <zero> time+ = ;
361 : unix-1970 ( -- timestamp )
362 1970 1 1 0 0 0 instant <timestamp> ;
364 : millis>timestamp ( x -- timestamp )
365 [ unix-1970 ] dip milliseconds time+ ;
367 : timestamp>millis ( timestamp -- n )
368 unix-1970 (time-) 1000 * >integer ;
370 : micros>timestamp ( x -- timestamp )
371 [ unix-1970 ] dip microseconds time+ ;
373 : timestamp>micros ( timestamp -- n )
374 unix-1970 (time-) 1000000 * >integer ;
376 : now ( -- timestamp ) gmt >local-time ;
377 : hence ( duration -- timestamp ) now swap time+ ;
378 : ago ( duration -- timestamp ) now swap time- ;
380 : zeller-congruence ( year month day -- n )
382 #! http://web.textfiles.com/computers/formulas.txt
383 #! good for any date since October 15, 1582
385 dup 2 <= [ [ 1 - ] [ 12 + ] bi* ] when
386 [ dup [ 4 /i + ] [ 100 /i - ] [ 400 /i + ] tri ] dip
387 [ 1 + 3 * 5 /i + ] keep 2 * +
390 GENERIC: days-in-year ( obj -- n )
392 M: integer days-in-year ( year -- n ) leap-year? 366 365 ? ;
393 M: timestamp days-in-year ( timestamp -- n ) year>> days-in-year ;
395 : (days-in-month) ( year month -- n )
396 dup 2 = [ drop leap-year? 29 28 ? ] [ nip day-counts nth ] if ;
398 : days-in-month ( timestamp -- n )
399 >date< drop (days-in-month) ;
401 : day-of-week ( timestamp -- n )
402 >date< zeller-congruence ;
404 GENERIC: day-name ( obj -- string )
405 M: integer day-name day-names nth ;
406 M: timestamp day-name day-of-week day-names nth ;
408 :: (day-of-year) ( year month day -- n )
409 day-counts month head-slice sum day +
411 year month day <date>
416 : day-of-year ( timestamp -- n )
417 >date< (day-of-year) ;
419 : midnight ( timestamp -- new-timestamp )
420 clone 0 >>hour 0 >>minute 0 >>second ; inline
422 : noon ( timestamp -- new-timestamp )
423 midnight 12 >>hour ; inline
425 : beginning-of-month ( timestamp -- new-timestamp )
428 : end-of-month ( timestamp -- new-timestamp )
429 [ midnight ] [ days-in-month ] bi >>day ;
433 : day-offset ( timestamp m -- new-timestamp n )
434 over day-of-week - ; inline
436 : day-this-week ( timestamp n -- new-timestamp )
437 day-offset days time+ ;
439 :: nth-day-this-month ( timestamp n day -- new-timestamp )
440 timestamp beginning-of-month day day-this-week
441 dup timestamp [ month>> ] bi@ = [ 1 weeks time+ ] unless
442 n 1 - [ weeks time+ ] unless-zero ;
444 : last-day-this-month ( timestamp day -- new-timestamp )
445 [ 1 months time+ 1 ] dip nth-day-this-month 1 weeks time- ;
449 GENERIC: january ( obj -- timestamp )
450 GENERIC: february ( obj -- timestamp )
451 GENERIC: march ( obj -- timestamp )
452 GENERIC: april ( obj -- timestamp )
453 GENERIC: may ( obj -- timestamp )
454 GENERIC: june ( obj -- timestamp )
455 GENERIC: july ( obj -- timestamp )
456 GENERIC: august ( obj -- timestamp )
457 GENERIC: september ( obj -- timestamp )
458 GENERIC: october ( obj -- timestamp )
459 GENERIC: november ( obj -- timestamp )
460 GENERIC: december ( obj -- timestamp )
462 M: integer january 1 1 <date> ;
463 M: integer february 2 1 <date> ;
464 M: integer march 3 1 <date> ;
465 M: integer april 4 1 <date> ;
466 M: integer may 5 1 <date> ;
467 M: integer june 6 1 <date> ;
468 M: integer july 7 1 <date> ;
469 M: integer august 8 1 <date> ;
470 M: integer september 9 1 <date> ;
471 M: integer october 10 1 <date> ;
472 M: integer november 11 1 <date> ;
473 M: integer december 12 1 <date> ;
475 M: timestamp january clone 1 >>month ;
476 M: timestamp february clone 2 >>month ;
477 M: timestamp march clone 3 >>month ;
478 M: timestamp april clone 4 >>month ;
479 M: timestamp may clone 5 >>month ;
480 M: timestamp june clone 6 >>month ;
481 M: timestamp july clone 7 >>month ;
482 M: timestamp august clone 8 >>month ;
483 M: timestamp september clone 9 >>month ;
484 M: timestamp october clone 10 >>month ;
485 M: timestamp november clone 11 >>month ;
486 M: timestamp december clone 12 >>month ;
488 : sunday ( timestamp -- new-timestamp ) 0 day-this-week ;
489 : monday ( timestamp -- new-timestamp ) 1 day-this-week ;
490 : tuesday ( timestamp -- new-timestamp ) 2 day-this-week ;
491 : wednesday ( timestamp -- new-timestamp ) 3 day-this-week ;
492 : thursday ( timestamp -- new-timestamp ) 4 day-this-week ;
493 : friday ( timestamp -- new-timestamp ) 5 day-this-week ;
494 : saturday ( timestamp -- new-timestamp ) 6 day-this-week ;
496 : sunday? ( timestamp -- ? ) day-of-week 0 = ;
497 : monday? ( timestamp -- ? ) day-of-week 1 = ;
498 : tuesday? ( timestamp -- ? ) day-of-week 2 = ;
499 : wednesday? ( timestamp -- ? ) day-of-week 3 = ;
500 : thursday? ( timestamp -- ? ) day-of-week 4 = ;
501 : friday? ( timestamp -- ? ) day-of-week 5 = ;
502 : saturday? ( timestamp -- ? ) day-of-week 6 = ;
504 : sunday-of-month ( timestamp n -- new-timestamp ) 0 nth-day-this-month ;
505 : monday-of-month ( timestamp n -- new-timestamp ) 1 nth-day-this-month ;
506 : tuesday-of-month ( timestamp n -- new-timestamp ) 2 nth-day-this-month ;
507 : wednesday-of-month ( timestamp n -- new-timestamp ) 3 nth-day-this-month ;
508 : thursday-of-month ( timestamp n -- new-timestamp ) 4 nth-day-this-month ;
509 : friday-of-month ( timestamp n -- new-timestamp ) 5 nth-day-this-month ;
510 : saturday-of-month ( timestamp n -- new-timestamp ) 6 nth-day-this-month ;
512 : last-sunday-of-month ( timestamp -- new-timestamp ) 0 last-day-this-month ;
513 : last-monday-of-month ( timestamp -- new-timestamp ) 1 last-day-this-month ;
514 : last-tuesday-of-month ( timestamp -- new-timestamp ) 2 last-day-this-month ;
515 : last-wednesday-of-month ( timestamp -- new-timestamp ) 3 last-day-this-month ;
516 : last-thursday-of-month ( timestamp -- new-timestamp ) 4 last-day-this-month ;
517 : last-friday-of-month ( timestamp -- new-timestamp ) 5 last-day-this-month ;
518 : last-saturday-of-month ( timestamp -- new-timestamp ) 6 last-day-this-month ;
520 : beginning-of-week ( timestamp -- new-timestamp )
523 GENERIC: beginning-of-year ( object -- new-timestamp )
524 M: timestamp beginning-of-year beginning-of-month 1 >>month ;
525 M: integer beginning-of-year <year> ;
527 GENERIC: end-of-year ( object -- new-timestamp )
528 M: timestamp end-of-year 12 >>month 31 >>day ;
529 M: integer end-of-year 12 31 <date> ;
531 : time-since-midnight ( timestamp -- duration )
534 : since-1970 ( duration -- timestamp )
537 : timestamp>unix-time ( timestamp -- seconds )
538 unix-1970 time- second>> ;
540 : unix-time>timestamp ( seconds -- timestamp )
541 seconds unix-1970 time+ ;
544 duration>nanoseconds >integer nano-count + sleep-until ;
547 { [ os unix? ] [ "calendar.unix" ] }
548 { [ os windows? ] [ "calendar.windows" ] }