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 vocabs 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> ; inline
38 : <date> ( year month day -- timestamp )
39 0 0 0 gmt-offset-duration <timestamp> ; inline
41 : <date-gmt> ( year month day -- timestamp )
42 0 0 0 instant <timestamp> ; inline
44 : <year> ( year -- timestamp )
47 : <year-gmt> ( year -- timestamp )
48 1 1 <date-gmt> ; inline
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"
67 GENERIC: month-name ( obj -- string )
69 M: integer month-name check-month 1 - month-names nth ;
70 M: timestamp month-name month>> 1 - month-names nth ;
72 CONSTANT: month-abbreviations
74 "Jan" "Feb" "Mar" "Apr" "May" "Jun"
75 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"
78 : month-abbreviation ( n -- string )
79 check-month 1 - month-abbreviations nth ;
81 CONSTANT: day-counts { 0 31 28 31 30 31 30 31 31 30 31 30 31 }
84 { "Sunday" "Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday" }
86 CONSTANT: day-abbreviations2
87 { "Su" "Mo" "Tu" "We" "Th" "Fr" "Sa" }
89 : day-abbreviation2 ( n -- string )
90 day-abbreviations2 nth ; inline
92 CONSTANT: day-abbreviations3
93 { "Sun" "Mon" "Tue" "Wed" "Thu" "Fri" "Sat" }
95 : day-abbreviation3 ( n -- string )
96 day-abbreviations3 nth ; inline
98 CONSTANT: average-month 30+5/12
99 CONSTANT: months-per-year 12
100 CONSTANT: days-per-year 3652425/10000
101 CONSTANT: hours-per-year 876582/100
102 CONSTANT: minutes-per-year 5259492/10
103 CONSTANT: seconds-per-year 31556952
105 :: julian-day-number ( year month day -- n )
106 #! Returns a composite date number
107 #! Not valid before year -4800
108 14 month - 12 /i :> a
110 month 12 a * + 3 - :> m
112 day 153 m * 2 + 5 /i + 365 y * +
113 y 4 /i + y 100 /i - y 400 /i + 32045 - ;
115 :: julian-day-number>date ( n -- year month day )
116 #! Inverse of julian-day-number
118 4 a * 3 + 146097 /i :> b
119 a 146097 b * 4 /i - :> c
120 4 c * 3 + 1461 /i :> d
121 c 1461 d * 4 /i - :> e
122 5 e * 2 + 153 /i :> m
127 e 153 m * 2 + 5 /i - 1 + ;
129 GENERIC: easter ( obj -- obj' )
131 :: easter-month-day ( year -- month day )
133 year 100 /mod :> ( b c )
137 19 a * b + d - g - 15 + 30 mod :> h
139 32 2 e * + 2 i * + h - k - 7 mod :> l
140 a 11 h * + 22 l * + 451 /i :> m
142 h l + 7 m * - 114 + 31 /mod 1 + ;
144 M: integer easter ( year -- timestamp )
145 dup easter-month-day <date> ;
147 M: timestamp easter ( timestamp -- timestamp )
149 dup year>> easter-month-day
150 swapd >>day swap >>month ;
152 : >date< ( timestamp -- year month day )
153 [ year>> ] [ month>> ] [ day>> ] tri ;
155 : >time< ( timestamp -- hour minute second )
156 [ hour>> ] [ minute>> ] [ second>> ] tri ;
158 : years ( x -- duration ) instant clone swap >>year ;
159 : months ( x -- duration ) instant clone swap >>month ;
160 : days ( x -- duration ) instant clone swap >>day ;
161 : weeks ( x -- duration ) 7 * days ;
162 : hours ( x -- duration ) instant clone swap >>hour ;
163 : minutes ( x -- duration ) instant clone swap >>minute ;
164 : seconds ( x -- duration ) instant clone swap >>second ;
165 : milliseconds ( x -- duration ) 1000 / seconds ;
166 : microseconds ( x -- duration ) 1000000 / seconds ;
167 : nanoseconds ( x -- duration ) 1000000000 / seconds ;
169 GENERIC: leap-year? ( obj -- ? )
171 M: integer leap-year? ( year -- ? )
172 dup 100 divisor? 400 4 ? divisor? ;
174 M: timestamp leap-year? ( timestamp -- ? )
179 GENERIC: +year ( timestamp x -- timestamp )
180 GENERIC: +month ( timestamp x -- timestamp )
181 GENERIC: +day ( timestamp x -- timestamp )
182 GENERIC: +hour ( timestamp x -- timestamp )
183 GENERIC: +minute ( timestamp x -- timestamp )
184 GENERIC: +second ( timestamp x -- timestamp )
186 : /rem ( f n -- q r )
187 #! q is positive or negative, r is positive from 0 <= r < n
188 [ / floor >integer ] 2keep rem ;
190 : float>whole-part ( float -- int float )
191 [ floor >integer ] keep over - ;
193 : adjust-leap-year ( timestamp -- timestamp )
195 { [ day>> 29 = ] [ month>> 2 = ] [ leap-year? not ] } 1&&
196 [ 3 >>month 1 >>day ] when ;
198 M: integer +year ( timestamp n -- timestamp )
199 [ + ] curry change-year adjust-leap-year ;
201 M: real +year ( timestamp n -- timestamp )
202 [ float>whole-part swapd days-per-year * +day swap +year ] unless-zero ;
204 : months/years ( n -- months years )
205 12 /rem [ 1 - 12 ] when-zero swap ; inline
207 M: integer +month ( timestamp n -- timestamp )
208 [ over month>> + months/years [ >>month ] dip +year ] unless-zero ;
210 M: real +month ( timestamp n -- timestamp )
211 [ float>whole-part swapd average-month * +day swap +month ] unless-zero ;
213 M: integer +day ( timestamp n -- timestamp )
215 over >date< julian-day-number + julian-day-number>date
216 [ >>year ] [ >>month ] [ >>day ] tri*
219 M: real +day ( timestamp n -- timestamp )
220 [ float>whole-part swapd 24 * +hour swap +day ] unless-zero ;
222 : hours/days ( n -- hours days )
225 M: integer +hour ( timestamp n -- timestamp )
226 [ over hour>> + hours/days [ >>hour ] dip +day ] unless-zero ;
228 M: real +hour ( timestamp n -- timestamp )
229 float>whole-part swapd 60 * +minute swap +hour ;
231 : minutes/hours ( n -- minutes hours )
234 M: integer +minute ( timestamp n -- timestamp )
235 [ over minute>> + minutes/hours [ >>minute ] dip +hour ] unless-zero ;
237 M: real +minute ( timestamp n -- timestamp )
238 [ float>whole-part swapd 60 * +second swap +minute ] unless-zero ;
240 : seconds/minutes ( n -- seconds minutes )
241 60 /rem swap >integer ;
243 M: number +second ( timestamp n -- timestamp )
244 [ over second>> + seconds/minutes [ >>second ] dip +minute ] unless-zero ;
246 : (time+) ( timestamp duration -- timestamp' duration )
247 [ second>> +second ] keep
248 [ minute>> +minute ] keep
249 [ hour>> +hour ] keep
251 [ month>> +month ] keep
252 [ year>> +year ] keep ; inline
254 : +slots ( obj1 obj2 quot -- n obj1 obj2 )
255 [ bi@ + ] curry 2keep ; inline
259 GENERIC# time+ 1 ( time1 time2 -- time3 )
262 [ clone ] dip (time+) drop ;
277 : duration>years ( duration -- x )
278 #! Uses average month/year length since duration loses calendar
283 [ month>> months-per-year / + ]
284 [ day>> days-per-year / + ]
285 [ hour>> hours-per-year / + ]
286 [ minute>> minutes-per-year / + ]
287 [ second>> seconds-per-year / + ]
290 M: duration <=> [ duration>years ] compare ;
292 : duration>months ( duration -- x ) duration>years months-per-year * ;
293 : duration>days ( duration -- x ) duration>years days-per-year * ;
294 : duration>hours ( duration -- x ) duration>years hours-per-year * ;
295 : duration>minutes ( duration -- x ) duration>years minutes-per-year * ;
296 : duration>seconds ( duration -- x ) duration>years seconds-per-year * ;
297 : duration>milliseconds ( duration -- x ) duration>seconds 1000 * ;
298 : duration>microseconds ( duration -- x ) duration>seconds 1000000 * ;
299 : duration>nanoseconds ( duration -- x ) duration>seconds 1000000000 * ;
301 GENERIC: time- ( time1 time2 -- time3 )
303 : convert-timezone ( timestamp duration -- timestamp' )
304 over gmt-offset>> over = [ drop ] [
305 [ over gmt-offset>> time- time+ ] keep >>gmt-offset
308 : >local-time ( timestamp -- timestamp' )
309 gmt-offset-duration convert-timezone ;
311 : >gmt ( timestamp -- timestamp' )
312 instant convert-timezone ;
314 M: timestamp <=> ( ts1 ts2 -- n )
315 [ >gmt tuple-slots ] compare ;
317 : same-day? ( ts1 ts2 -- ? )
318 [ >gmt >date< <date> ] bi@ = ;
320 : (time-) ( timestamp timestamp -- n )
322 [ [ >date< julian-day-number ] bi@ - 86400 * ] 2keep
323 [ >time< [ [ 3600 * ] [ 60 * ] bi* ] dip + + ] bi@ - + ;
326 #! Exact calendar-time difference
329 : time* ( obj1 obj2 -- obj3 )
330 dup real? [ swap ] when
342 : before ( duration -- -duration )
347 : -slots ( obj1 obj2 quot -- n obj1 obj2 )
348 [ bi@ - ] curry 2keep ; inline
365 : <zero> ( -- timestamp )
366 0 0 0 <date-gmt> ; inline
368 : valid-timestamp? ( timestamp -- ? )
369 clone instant >>gmt-offset
370 dup <zero> time- <zero> time+ = ;
372 : unix-1970 ( -- timestamp )
373 1970 <year-gmt> ; inline
375 : millis>timestamp ( x -- timestamp )
376 [ unix-1970 ] dip 1000 / +second ;
378 : timestamp>millis ( timestamp -- n )
379 unix-1970 (time-) 1000 * >integer ;
381 : micros>timestamp ( x -- timestamp )
382 [ unix-1970 ] dip 1000000 / +second ;
384 : timestamp>micros ( timestamp -- n )
385 unix-1970 (time-) 1000000 * >integer ;
387 : now ( -- timestamp )
388 gmt gmt-offset-duration (time+) >>gmt-offset ;
390 : hence ( duration -- timestamp ) now swap time+ ;
392 : ago ( duration -- timestamp ) now swap time- ;
394 : zeller-congruence ( year month day -- n )
396 #! http://web.textfiles.com/computers/formulas.txt
397 #! good for any date since October 15, 1582
399 dup 2 <= [ [ 1 - ] [ 12 + ] bi* ] when
400 [ dup [ 4 /i + ] [ 100 /i - ] [ 400 /i + ] tri ] dip
401 [ 1 + 3 * 5 /i + ] keep 2 * +
404 GENERIC: days-in-year ( obj -- n )
406 M: integer days-in-year ( year -- n ) leap-year? 366 365 ? ;
407 M: timestamp days-in-year ( timestamp -- n ) year>> days-in-year ;
409 : (days-in-month) ( year month -- n )
410 dup 2 = [ drop leap-year? 29 28 ? ] [ nip day-counts nth ] if ;
412 : days-in-month ( timestamp -- n )
413 >date< drop (days-in-month) ;
415 : day-of-week ( timestamp -- n )
416 >date< zeller-congruence ;
418 GENERIC: day-name ( obj -- string )
419 M: integer day-name day-names nth ;
420 M: timestamp day-name day-of-week day-names nth ;
422 :: (day-of-year) ( year month day -- n )
423 day-counts month head-slice sum day +
425 year month day <date>
430 : day-of-year ( timestamp -- n )
431 >date< (day-of-year) ;
433 : midnight ( timestamp -- new-timestamp )
434 clone 0 >>hour 0 >>minute 0 >>second ; inline
436 : noon ( timestamp -- new-timestamp )
437 midnight 12 >>hour ; inline
439 : today ( -- timestamp )
440 now midnight ; inline
442 : beginning-of-month ( timestamp -- new-timestamp )
443 midnight 1 >>day ; inline
445 : end-of-month ( timestamp -- new-timestamp )
446 [ midnight ] [ days-in-month ] bi >>day ;
450 : day-offset ( timestamp m -- new-timestamp n )
451 over day-of-week - ; inline
453 : day-this-week ( timestamp n -- new-timestamp )
454 day-offset days time+ ;
456 :: nth-day-this-month ( timestamp n day -- new-timestamp )
457 timestamp beginning-of-month day day-this-week
458 dup timestamp [ month>> ] bi@ = [ 1 weeks time+ ] unless
459 n 1 - [ weeks time+ ] unless-zero ;
461 : last-day-this-month ( timestamp day -- new-timestamp )
462 [ 1 months time+ 1 ] dip nth-day-this-month 1 weeks time- ;
466 GENERIC: january ( obj -- timestamp )
467 GENERIC: february ( obj -- timestamp )
468 GENERIC: march ( obj -- timestamp )
469 GENERIC: april ( obj -- timestamp )
470 GENERIC: may ( obj -- timestamp )
471 GENERIC: june ( obj -- timestamp )
472 GENERIC: july ( obj -- timestamp )
473 GENERIC: august ( obj -- timestamp )
474 GENERIC: september ( obj -- timestamp )
475 GENERIC: october ( obj -- timestamp )
476 GENERIC: november ( obj -- timestamp )
477 GENERIC: december ( obj -- timestamp )
479 M: integer january 1 1 <date> ;
480 M: integer february 2 1 <date> ;
481 M: integer march 3 1 <date> ;
482 M: integer april 4 1 <date> ;
483 M: integer may 5 1 <date> ;
484 M: integer june 6 1 <date> ;
485 M: integer july 7 1 <date> ;
486 M: integer august 8 1 <date> ;
487 M: integer september 9 1 <date> ;
488 M: integer october 10 1 <date> ;
489 M: integer november 11 1 <date> ;
490 M: integer december 12 1 <date> ;
492 M: timestamp january clone 1 >>month ;
493 M: timestamp february clone 2 >>month ;
494 M: timestamp march clone 3 >>month ;
495 M: timestamp april clone 4 >>month ;
496 M: timestamp may clone 5 >>month ;
497 M: timestamp june clone 6 >>month ;
498 M: timestamp july clone 7 >>month ;
499 M: timestamp august clone 8 >>month ;
500 M: timestamp september clone 9 >>month ;
501 M: timestamp october clone 10 >>month ;
502 M: timestamp november clone 11 >>month ;
503 M: timestamp december clone 12 >>month ;
505 : sunday ( timestamp -- new-timestamp ) 0 day-this-week ;
506 : monday ( timestamp -- new-timestamp ) 1 day-this-week ;
507 : tuesday ( timestamp -- new-timestamp ) 2 day-this-week ;
508 : wednesday ( timestamp -- new-timestamp ) 3 day-this-week ;
509 : thursday ( timestamp -- new-timestamp ) 4 day-this-week ;
510 : friday ( timestamp -- new-timestamp ) 5 day-this-week ;
511 : saturday ( timestamp -- new-timestamp ) 6 day-this-week ;
513 : sunday? ( timestamp -- ? ) day-of-week 0 = ;
514 : monday? ( timestamp -- ? ) day-of-week 1 = ;
515 : tuesday? ( timestamp -- ? ) day-of-week 2 = ;
516 : wednesday? ( timestamp -- ? ) day-of-week 3 = ;
517 : thursday? ( timestamp -- ? ) day-of-week 4 = ;
518 : friday? ( timestamp -- ? ) day-of-week 5 = ;
519 : saturday? ( timestamp -- ? ) day-of-week 6 = ;
521 : sunday-of-month ( timestamp n -- new-timestamp ) 0 nth-day-this-month ;
522 : monday-of-month ( timestamp n -- new-timestamp ) 1 nth-day-this-month ;
523 : tuesday-of-month ( timestamp n -- new-timestamp ) 2 nth-day-this-month ;
524 : wednesday-of-month ( timestamp n -- new-timestamp ) 3 nth-day-this-month ;
525 : thursday-of-month ( timestamp n -- new-timestamp ) 4 nth-day-this-month ;
526 : friday-of-month ( timestamp n -- new-timestamp ) 5 nth-day-this-month ;
527 : saturday-of-month ( timestamp n -- new-timestamp ) 6 nth-day-this-month ;
529 : last-sunday-of-month ( timestamp -- new-timestamp ) 0 last-day-this-month ;
530 : last-monday-of-month ( timestamp -- new-timestamp ) 1 last-day-this-month ;
531 : last-tuesday-of-month ( timestamp -- new-timestamp ) 2 last-day-this-month ;
532 : last-wednesday-of-month ( timestamp -- new-timestamp ) 3 last-day-this-month ;
533 : last-thursday-of-month ( timestamp -- new-timestamp ) 4 last-day-this-month ;
534 : last-friday-of-month ( timestamp -- new-timestamp ) 5 last-day-this-month ;
535 : last-saturday-of-month ( timestamp -- new-timestamp ) 6 last-day-this-month ;
537 : beginning-of-week ( timestamp -- new-timestamp )
540 GENERIC: beginning-of-year ( object -- new-timestamp )
541 M: timestamp beginning-of-year beginning-of-month 1 >>month ;
542 M: integer beginning-of-year <year> ;
544 GENERIC: end-of-year ( object -- new-timestamp )
545 M: timestamp end-of-year 12 >>month 31 >>day ;
546 M: integer end-of-year 12 31 <date> ;
548 : time-since-midnight ( timestamp -- duration )
549 dup midnight time- ; inline
551 : since-1970 ( duration -- timestamp )
552 unix-1970 time+ ; inline
554 : timestamp>unix-time ( timestamp -- seconds )
555 unix-1970 (time-) ; inline
557 : unix-time>timestamp ( seconds -- timestamp )
558 [ unix-1970 ] dip +second ; inline
561 { [ os unix? ] [ "calendar.unix" ] }
562 { [ os windows? ] [ "calendar.windows" ] }
565 { "threads" "calendar" } "calendar.threads" require-when