/usr/share/common-lisp/source/clsql/sql/time.lisp is in cl-sql 6.7.0-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 | ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
;;;; *************************************************************************
;;;;
;;;; A variety of structures and function for creating and
;;;; manipulating dates, times, durations and intervals for
;;;; CLSQL.
;;;;
;;;; This file was originally part of ODCL and is Copyright (c) 2002 -
;;;; 2003 onShore Development, Inc.
;;;;
;;;; CLSQL users are granted the rights to distribute and use this software
;;;; as governed by the terms of the Lisp Lesser GNU Public License
;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************
(in-package #:clsql-sys)
;; ------------------------------------------------------------
;; Months
(defvar *month-keywords*
'(:january :february :march :april :may :june :july :august :september
:october :november :december))
(defvar *month-names*
'("" "January" "February" "March" "April" "May" "June" "July" "August"
"September" "October" "November" "December"))
(defun month-name (month-index)
(nth month-index *month-names*))
(defun ordinal-month (month-keyword)
"Return the zero-based month number for the given MONTH keyword."
(position month-keyword *month-keywords*))
;; ------------------------------------------------------------
;; Days
(defvar *day-keywords*
'(:sunday :monday :tuesday :wednesday :thursday :friday :saturday))
(defvar *day-names*
'("Sunday" "Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday"))
(defun day-name (day-index)
(nth day-index *day-names*))
(defun ordinal-day (day-keyword)
"Return the zero-based day number for the given DAY keyword."
(position day-keyword *day-keywords*))
;; ------------------------------------------------------------
;; time classes: wall-time, duration
(eval-when (:compile-toplevel :load-toplevel)
(defstruct (wall-time (:conc-name time-)
(:constructor %make-wall-time)
(:print-function %print-wall-time))
(mjd 0 :type fixnum)
(second 0 :type fixnum)
(usec 0 :type fixnum))
(defun %print-wall-time (time stream depth)
(declare (ignore depth))
(if *print-escape*
(format stream "#<WALL-TIME: ~a>" (format-time nil time))
(format-time stream time :format :pretty)))
(defstruct (duration (:constructor %make-duration)
(:print-function %print-duration))
(year 0 :type fixnum)
(month 0 :type fixnum)
(day 0 :type fixnum)
(hour 0 :type fixnum)
(second 0 :type fixnum)
(minute 0 :type fixnum)
(usec 0 :type fixnum))
(defun %print-duration (duration stream depth)
(declare (ignore depth))
(if *print-escape*
(format stream "#<DURATION: ~a>"
(format-duration nil duration :precision :second))
(format-duration stream duration :precision :second)))
(defstruct (date (:constructor %make-date)
(:print-function %print-date))
(mjd 0 :type fixnum))
(defun %print-date (date stream depth)
(declare (ignore depth))
(if *print-escape*
(format stream "#<DATE: ~a>" (format-date nil date))
(format-date stream date :format :pretty)))
);eval-when
(defun duration-timestring (duration)
(let ((second (duration-second duration))
(minute (duration-minute duration))
(hour (duration-hour duration))
(day (duration-day duration))
(month (duration-month duration))
(year (duration-year duration)))
(format nil "P~dY~dM~dD~dH~dM~dS" year month day hour minute second)))
;; ------------------------------------------------------------
;; Constructors
(defun make-time (&key (year 0) (month 1) (day 1) (hour 0) (minute 0)
(second 0) (usec 0) (offset 0))
(let ((mjd (gregorian-to-mjd month day year))
(sec (+ (* hour 60 60)
(* minute 60)
second (- offset))))
(multiple-value-bind (day-add raw-sec)
(floor sec (* 60 60 24))
(%make-wall-time :mjd (+ mjd day-add) :second raw-sec :usec usec))))
(defun make-date (&key (year 0) (month 1) (day 1) (hour 0) (minute 0)
(second 0) (usec 0) (offset 0))
(time->date (make-time :year year :month month :day day :hour hour
:minute minute :second second :usec usec :offset offset)))
(defun copy-time (time)
(%make-wall-time :mjd (time-mjd time)
:second (time-second time)))
(defun utime->time (utime)
"Return a pair: (GREGORIAN DAY . TIME-OF-DAY)"
(multiple-value-bind (second minute hour day mon year)
(decode-universal-time utime)
(make-time :year year :month mon :day day :hour hour :minute minute
:second second)))
(defun date->time (date)
"Returns a walltime for the given date"
(%make-wall-time :mjd (date-mjd date)))
(defun time->date (time)
"Returns a date for the given wall time (obvious loss in resolution)"
(%make-date :mjd (time-mjd time)))
(defun get-time ()
"Return a pair: (GREGORIAN DAY . TIME-OF-DAY)"
(utime->time (get-universal-time)))
(defun get-date ()
"Returns a date for today"
(time->date (get-time)))
(defun make-duration (&key (year 0) (month 0) (day 0) (hour 0) (minute 0)
(second 0) (usec 0))
(multiple-value-bind (second-add usec-1000000)
(floor usec 1000000)
(multiple-value-bind (minute-add second-60)
(floor (+ second second-add) 60)
(multiple-value-bind (hour-add minute-60)
(floor (+ minute minute-add) 60)
(multiple-value-bind (day-add hour-24)
(floor (+ hour hour-add) 24)
(%make-duration :year year :month month :day (+ day day-add)
:hour hour-24
:minute minute-60
:second second-60
:usec usec-1000000))))))
;; ------------------------------------------------------------
;; Accessors
(defun time-hms (time)
(multiple-value-bind (hourminute second)
(floor (time-second time) 60)
(multiple-value-bind (hour minute)
(floor hourminute 60)
(values hour minute second))))
(defun time-ymd (time)
(destructuring-bind (month day year)
(mjd-to-gregorian (time-mjd time))
(values year month day)))
(defun time-dow (time)
"Return the 0 indexed Day of the week starting with Sunday"
(mod (+ 3 (time-mjd time)) 7))
(defun decode-time (time)
"returns the decoded time as multiple values: usec, second, minute, hour,
day, month, year, integer day-of-week"
(multiple-value-bind (year month day)
(time-ymd time)
(multiple-value-bind (hour minute second)
(time-hms time)
(values (time-usec time) second minute hour day month year (mod (+ (time-mjd time) 3) 7)))))
(defun date-ymd (date)
(time-ymd (date->time date)))
(defun date-dow (date)
(time-dow (date->time date)))
(defun decode-date (date)
"returns the decoded date as multiple values: day month year integer day-of-week"
(multiple-value-bind (year month day)
(time-ymd (date->time date))
(values day month year (date-dow date))))
;; duration specific
(defun duration-reduce (duration precision &optional round)
(ecase precision
(:usec
(+ (duration-usec duration)
(* (duration-reduce duration :second) 1000000)))
(:second
(+ (if round
(floor (duration-usec duration) 500000)
0)
(duration-second duration)
(* (duration-reduce duration :minute) 60)))
(:minute
(+ (if round
(floor (duration-second duration) 30)
0)
(duration-minute duration)
(* (duration-reduce duration :hour) 60)))
(:hour
(+ (if round
(floor (duration-minute duration) 30)
0)
(duration-hour duration)
(* (duration-reduce duration :day) 24)))
(:day
(+ (if round
(floor (duration-hour duration) 12)
0)
(duration-day duration)))))
;; ------------------------------------------------------------
;; Arithemetic and comparators
(defun duration= (duration-a duration-b)
(= (duration-reduce duration-a :usec)
(duration-reduce duration-b :usec)))
(defun duration< (duration-a duration-b)
(< (duration-reduce duration-a :usec)
(duration-reduce duration-b :usec)))
(defun duration<= (duration-a duration-b)
(<= (duration-reduce duration-a :usec)
(duration-reduce duration-b :usec)))
(defun duration>= (x y)
(duration<= y x))
(defun duration> (x y)
(duration< y x))
(defun %time< (x y)
(let ((mjd-x (time-mjd x))
(mjd-y (time-mjd y)))
(if (/= mjd-x mjd-y)
(< mjd-x mjd-y)
(if (/= (time-second x) (time-second y))
(< (time-second x) (time-second y))
(< (time-usec x) (time-usec y))))))
(defun %time>= (x y)
(if (/= (time-mjd x) (time-mjd y))
(>= (time-mjd x) (time-mjd y))
(if (/= (time-second x) (time-second y))
(>= (time-second x) (time-second y))
(>= (time-usec x) (time-usec y)))))
(defun %time<= (x y)
(if (/= (time-mjd x) (time-mjd y))
(<= (time-mjd x) (time-mjd y))
(if (/= (time-second x) (time-second y))
(<= (time-second x) (time-second y))
(<= (time-usec x) (time-usec y)))))
(defun %time> (x y)
(if (/= (time-mjd x) (time-mjd y))
(> (time-mjd x) (time-mjd y))
(if (/= (time-second x) (time-second y))
(> (time-second x) (time-second y))
(> (time-usec x) (time-usec y)))))
(defun %time= (x y)
(and (= (time-mjd x) (time-mjd y))
(= (time-second x) (time-second y))
(= (time-usec x) (time-usec y))))
(defun time= (number &rest more-numbers)
"Returns T if all of its arguments are numerically equal, NIL otherwise."
(do ((nlist more-numbers (cdr nlist)))
((atom nlist) t)
(declare (list nlist))
(if (not (%time= (car nlist) number)) (return nil))))
(defun time/= (number &rest more-numbers)
"Returns T if no two of its arguments are numerically equal, NIL otherwise."
(do* ((head number (car nlist))
(nlist more-numbers (cdr nlist)))
((atom nlist) t)
(declare (list nlist))
(unless (do* ((nl nlist (cdr nl)))
((atom nl) t)
(declare (list nl))
(if (%time= head (car nl)) (return nil)))
(return nil))))
(defun time< (number &rest more-numbers)
"Returns T if its arguments are in strictly increasing order, NIL otherwise."
(do* ((n number (car nlist))
(nlist more-numbers (cdr nlist)))
((atom nlist) t)
(declare (list nlist))
(if (not (%time< n (car nlist))) (return nil))))
(defun time> (number &rest more-numbers)
"Returns T if its arguments are in strictly decreasing order, NIL otherwise."
(do* ((n number (car nlist))
(nlist more-numbers (cdr nlist)))
((atom nlist) t)
(declare (list nlist))
(if (not (%time> n (car nlist))) (return nil))))
(defun time<= (number &rest more-numbers)
"Returns T if arguments are in strictly non-decreasing order, NIL otherwise."
(do* ((n number (car nlist))
(nlist more-numbers (cdr nlist)))
((atom nlist) t)
(declare (list nlist))
(if (not (%time<= n (car nlist))) (return nil))))
(defun time>= (number &rest more-numbers)
"Returns T if arguments are in strictly non-increasing order, NIL otherwise."
(do* ((n number (car nlist))
(nlist more-numbers (cdr nlist)))
((atom nlist) t)
(declare (list nlist))
(if (not (%time>= n (car nlist))) (return nil))))
(defun time-max (number &rest more-numbers)
"Returns the greatest of its arguments."
(do ((nlist more-numbers (cdr nlist))
(result number))
((null nlist) (return result))
(declare (list nlist))
(if (%time> (car nlist) result) (setf result (car nlist)))))
(defun time-min (number &rest more-numbers)
"Returns the least of its arguments."
(do ((nlist more-numbers (cdr nlist))
(result number))
((null nlist) (return result))
(declare (list nlist))
(if (%time< (car nlist) result) (setf result (car nlist)))))
(defun time-compare (time-a time-b)
(let ((mjd-a (time-mjd time-a))
(mjd-b (time-mjd time-b))
(sec-a (time-second time-a))
(sec-b (time-second time-b))
(usec-a (time-usec time-a))
(usec-b (time-usec time-b)))
(if (= mjd-a mjd-b)
(if (= sec-a sec-b)
(if (= usec-a usec-b)
:equal
(if (< usec-a usec-b)
:less-than
:greater-than))
(if (< sec-a sec-b)
:less-than
:greater-than))
(if (< mjd-a mjd-b)
:less-than
:greater-than))))
; now the same for dates
(eval-when (:compile-toplevel :load-toplevel)
(defun replace-string (string1 search-string replace-string &key (test #'string=))
"Search within string1 for search-string, replace with replace-string, non-destructively."
(let ((replace-string-length (length replace-string))
(search-string-length (length search-string)))
(labels ((sub-replace-string (current-string position)
(let ((found-position (search search-string current-string :test test :start2 position)))
(if (null found-position)
current-string
(sub-replace-string (concatenate 'string
(subseq current-string 0 found-position)
replace-string
(subseq current-string (+ found-position search-string-length)))
(+ position replace-string-length))))))
(sub-replace-string string1 0))))
);eval-when
(defmacro wrap-time-for-date (time-func &key (result-func))
(let ((date-func (intern (replace-string (symbol-name time-func)
(symbol-name-default-case "TIME")
(symbol-name-default-case "DATE")))))
`(defun ,date-func (number &rest more-numbers)
(let ((result (apply #',time-func (mapcar #'date->time (cons number more-numbers)))))
,(if result-func
`(funcall #',result-func result)
'result)))))
(wrap-time-for-date time=)
(wrap-time-for-date time/=)
(wrap-time-for-date time<)
(wrap-time-for-date time>)
(wrap-time-for-date time<=)
(wrap-time-for-date time>=)
(wrap-time-for-date time-max :result-func time->date)
(wrap-time-for-date time-min :result-func time->date)
(defun date-compare (date-a date-b)
(time-compare (date->time date-a) (date->time date-b)))
;; ------------------------------------------------------------
;; Formatting and output
(defun db-timestring (time &key stream)
"return the string to store the given time in the database"
(if stream
(progn (write-char #\' stream) (iso-timestring time :stream stream) (write-char #\' stream))
(concatenate 'string "'" (iso-timestring time) "'")))
(defun iso-timestring (time &key stream)
(multiple-value-bind (usec sec min hour day month year dow)
(decode-time time)
(declare (ignore dow))
(flet ((fmt (stream)
(when (< year 1000) (princ #\0 stream))
(when (< year 100) (princ #\0 stream))
(when (< year 10) (princ #\0 stream))
(princ year stream)
(princ #\- stream)
(when (< month 10) (princ #\0 stream))
(princ month stream)
(princ #\- stream)
(when (< day 10) (princ #\0 stream))
(princ day stream)
(princ #\T stream) ;strict ISO says T here isn't optional.
(when (< hour 10) (princ #\0 stream))
(princ hour stream)
(princ #\: stream)
(when (< min 10) (princ #\0 stream))
(princ min stream)
(princ #\: stream)
(when (< sec 10) (princ #\0 stream))
(princ sec stream)
(when (and usec (plusp usec))
;; we dont do this because different dbs support differnt precision levels
(princ #\. stream)
(loop for i from 5 downto 0
for x10 = (expt 10 i)
do (multiple-value-bind (quo rem)
(floor (/ usec x10))
(setf usec (- usec (* quo x10)))
(princ quo stream)
(when (= rem 0) (return)))))
nil))
(if stream
(fmt stream)
(with-output-to-string (stream)
(fmt stream))))))
(defun db-datestring (date)
(db-timestring (date->time date)))
(defun iso-datestring (date)
(iso-timestring (date->time date)))
;; ------------------------------------------------------------
;; Intervals
(defstruct interval
(start nil)
(end nil)
(name nil)
(contained nil)
(type nil)
(data nil))
;; fix : should also return :contains / :contained
(defun interval-relation (x y)
"Compare the relationship of node x to node y. Returns either
:contained :contains :follows :overlaps or :precedes."
(let ((xst (interval-start x))
(xend (interval-end x))
(yst (interval-start y))
(yend (interval-end y)))
(case (time-compare xst yst)
(:equal
(case (time-compare xend yend)
(:less-than
:contained)
((:equal :greater-than)
:contains)))
(:greater-than
(case (time-compare xst yend)
((:equal :greater-than)
:follows)
(:less-than
(case (time-compare xend yend)
((:less-than :equal)
:contained)
((:greater-than)
:overlaps)))))
(:less-than
(case (time-compare xend yst)
((:equal :less-than)
:precedes)
(:greater-than
(case (time-compare xend yend)
(:less-than
:overlaps)
((:equal :greater-than)
:contains))))))))
;; ------------------------------------------------------------
;; interval lists
(defun sort-interval-list (list)
(sort list (lambda (x y)
(case (interval-relation x y)
((:precedes :contains) t)
((:follows :overlaps :contained) nil)))))
;; interval push will return its list of intervals in strict order.
(defun interval-push (interval-list interval &optional container-rule)
(declare (ignore container-rule))
(let ((sorted-list (sort-interval-list interval-list)))
(dotimes (x (length sorted-list))
(let ((elt (nth x sorted-list)))
(case (interval-relation elt interval)
(:follows
(return-from interval-push (insert-at-index x sorted-list interval)))
(:contains
(return-from interval-push
(replace-at-index x sorted-list
(make-interval :start (interval-start elt)
:end (interval-end elt)
:type (interval-type elt)
:contained (interval-push (interval-contained elt) interval)
:data (interval-data elt)))))
((:overlaps :contained)
(error "Overlap")))))
(append sorted-list (list interval))))
;; interval lists
(defun interval-match (list time)
"Return the index of the first interval in list containing time"
;; this depends on ordering of intervals!
(let ((list (sort-interval-list list)))
(dotimes (x (length list))
(let ((elt (nth x list)))
(when (and (time<= (interval-start elt) time)
(time< time (interval-end elt)))
(return-from interval-match x))))))
(defun interval-clear (list time)
(dotimes (x (length list))
(let ((elt (nth x list)))
(when (and (time<= (interval-start elt) time)
(time< time (interval-end elt)))
(if (interval-match (interval-contained elt) time)
(return-from interval-clear
(replace-at-index x list
(make-interval :start (interval-start elt)
:end (interval-end elt)
:type (interval-type elt)
:contained (interval-clear (interval-contained elt) time)
:data (interval-data elt))))
(return-from interval-clear
(delete-at-index x list)))))))
(defun interval-edit (list time start end &optional tag)
"Attempts to modify the most deeply nested interval in list which
begins at time. If no changes are made, returns nil."
;; function required sorted interval list
(let ((list (sort-interval-list list)))
(if (null list) nil
(dotimes (x (length list))
(let ((elt (nth x list)))
(when (and (time<= (interval-start elt) time)
(time< time (interval-end elt)))
(or (interval-edit (interval-contained elt) time start end tag)
(cond ((and (< 0 x)
(time< start (interval-end (nth (1- x) list))))
(error "Overlap of previous interval"))
((and (< x (1- (length list)))
(time< (interval-start (nth (1+ x) list)) end))
(error "~S ~S ~S ~S Overlap of next interval" x (length list) (interval-start (nth (1+ x) list)) end ))
((time= (interval-start elt) time)
(return-from interval-edit
(replace-at-index x list
(make-interval :start start
:end end
:type (interval-type elt)
:contained (restrict-intervals (interval-contained elt) start end)
:data (or tag (interval-data elt))))))))))))))
(defun restrict-intervals (list start end &aux newlist)
(let ((test-interval (make-interval :start start :end end)))
(dolist (elt list)
(when (equal :contained
(interval-relation elt test-interval))
(push elt newlist)))
(nreverse newlist)))
;;; utils from odcl/list.lisp
(defun replace-at-index (idx list elt)
(cond ((= idx 0)
(cons elt (cdr list)))
((= idx (1- (length list)))
(append (butlast list) (list elt)))
(t
(append (subseq list 0 idx)
(list elt)
(subseq list (1+ idx))))))
(defun insert-at-index (idx list elt)
(cond ((= idx 0)
(cons elt list))
((= idx (1- (length list)))
(append list (list elt)))
(t
(append (subseq list 0 idx)
(list elt)
(subseq list idx)))))
(defun delete-at-index (idx list)
(cond ((= idx 0)
(cdr list))
((= idx (1- (length list)))
(butlast list))
(t
(append (subseq list 0 idx)
(subseq list (1+ idx))))))
;; ------------------------------------------------------------
;; return MJD for Gregorian date
(defun gregorian-to-mjd (month day year)
(let ((b 0)
(month-adj month)
(year-adj (if (< year 0)
(+ year 1)
year))
d
c)
(when (< month 3)
(incf month-adj 12)
(decf year-adj))
(unless (or (< year 1582)
(and (= year 1582)
(or (< month 10)
(and (= month 10)
(< day 15)))))
(let ((a (floor (/ year-adj 100))))
(setf b (+ (- 2 a) (floor (/ a 4))))))
(if (< year-adj 0)
(setf c (floor (- (* 365.25d0 year-adj) 679006.75d0)))
(setf c (floor (- (* 365.25d0 year-adj) 679006d0))))
(setf d (floor (* 30.6001 (+ 1 month-adj))))
;; (cmsg "b ~s c ~s d ~s day ~s" b c d day)
(+ b c d day)))
;; convert MJD to Gregorian date
(defun mjd-to-gregorian (mjd)
(let (z r g a b c year month day)
(setf z (floor (+ mjd 678882)))
(setf r (- (+ mjd 678882) z))
(setf g (- z .25))
(setf a (floor (/ g 36524.25)))
(setf b (- a (floor (/ a 4))))
(setf year (floor (/ (+ b g) 365.25)))
(setf c (- (+ b z) (floor (* 365.25 year))))
(setf month (truncate (/ (+ (* 5 c) 456) 153)))
(setf day (+ (- c (truncate (/ (- (* 153 month) 457) 5))) r))
(when (> month 12)
(incf year)
(decf month 12))
(list month day year)))
(defun duration+ (time &rest durations)
"Add each DURATION to TIME, returning a new wall-time value."
(let ((year (duration-year time))
(month (duration-month time))
(day (duration-day time))
(hour (duration-hour time))
(minute (duration-minute time))
(second (duration-second time))
(usec (duration-usec time)))
(dolist (duration durations)
(incf year (duration-year duration))
(incf month (duration-month duration))
(incf day (duration-day duration))
(incf hour (duration-hour duration))
(incf minute (duration-minute duration))
(incf second (duration-second duration))
(incf usec (duration-usec duration)))
(make-duration :year year :month month :day day :hour hour :minute minute
:second second :usec usec)))
(defun duration- (duration &rest durations)
"Subtract each DURATION from TIME, returning a new duration value."
(let ((year (duration-year duration))
(month (duration-month duration))
(day (duration-day duration))
(hour (duration-hour duration))
(minute (duration-minute duration))
(second (duration-second duration))
(usec (duration-usec duration)))
(dolist (duration durations)
(decf year (duration-year duration))
(decf month (duration-month duration))
(decf day (duration-day duration))
(decf hour (duration-hour duration))
(decf minute (duration-minute duration))
(decf second (duration-second duration))
(decf usec (duration-usec duration)))
(make-duration :year year :month month :day day :hour hour :minute minute
:second second :usec usec)))
;; Date + Duration
(defun time+ (time &rest durations)
"Add each DURATION to TIME, returning a new wall-time value."
(let ((new-time (copy-time time)))
(dolist (duration durations)
(roll new-time
:year (duration-year duration)
:month (duration-month duration)
:day (duration-day duration)
:hour (duration-hour duration)
:minute (duration-minute duration)
:second (duration-second duration)
:usec (duration-usec duration)
:destructive t))
new-time))
(defun date+ (date &rest durations)
"Add each DURATION to DATE, returning a new date value.
Note that (barring daylight saving time) 12h + 12h will result in a new day, but doing
it as separate calculations will not, as the time is chopped to a date before being returned."
(time->date (apply #'time+ (cons (date->time date) durations))))
(defun time- (time &rest durations)
"Subtract each DURATION from TIME, returning a new wall-time value."
(let ((new-time (copy-time time)))
(dolist (duration durations)
(roll new-time
:year (- (duration-year duration))
:month (- (duration-month duration))
:day (- (duration-day duration))
:hour (- (duration-hour duration))
:minute (- (duration-minute duration))
:second (- (duration-second duration))
:usec (- (duration-usec duration))
:destructive t))
new-time))
(defun date- (date &rest durations)
"Subtract each DURATION to DATE, returning a new date value.
Note that (barring daylight saving time) 12h + 12h will result in a new day, but doing
it as separate calculations will not, as the time is chopped to a date before being returned."
(time->date (apply #'time- (cons (date->time date) durations))))
(defun time-difference (time1 time2)
"Returns a DURATION representing the difference between TIME1 and
TIME2."
(flet ((do-diff (time1 time2)
(let (day-diff sec-diff)
(setf day-diff (- (time-mjd time2)
(time-mjd time1)))
(if (> day-diff 0)
(progn (decf day-diff)
(setf sec-diff (+ (time-second time2)
(- (* 60 60 24)
(time-second time1)))))
(setf sec-diff (- (time-second time2)
(time-second time1))))
(make-duration :day day-diff
:second sec-diff))))
(if (time< time1 time2)
(do-diff time1 time2)
(do-diff time2 time1))))
(defun date-difference (date1 date2)
"Returns a DURATION representing the difference between TIME1 and
TIME2."
(time-difference (date->time date1) (date->time date2)))
(defun format-date (stream date &key format
(date-separator "-")
(internal-separator " "))
"produces on stream the datestring corresponding to the date
with the given options"
(format-time stream (date->time date)
:format format
:date-separator date-separator
:internal-separator internal-separator))
(defun format-time (stream time &key format
(date-separator "-")
(time-separator ":")
(internal-separator " "))
"produces on stream the timestring corresponding to the wall-time
with the given options"
(let ((*print-circle* nil))
(multiple-value-bind (usec second minute hour day month year dow)
(decode-time time)
(case format
(:pretty
(format stream "~A ~A, ~A ~D, ~D"
(pretty-time hour minute)
(day-name dow)
(month-name month)
day
year))
(:short-pretty
(format stream "~A, ~D/~D/~D"
(pretty-time hour minute)
month day year))
((:iso :iso8601) (iso-timestring time :stream stream))
(t (format stream "~2,'0D~A~2,'0D~A~2,'0D~A~2,'0D~A~2,'0D~A~2,'0D.~6,'0D"
year date-separator month date-separator day
internal-separator hour time-separator minute time-separator
second usec)
)))))
(defun pretty-time (hour minute)
(cond
((eq hour 0)
(format nil "12:~2,'0D AM" minute))
((eq hour 12)
(format nil "12:~2,'0D PM" minute))
((< hour 12)
(format nil "~D:~2,'0D AM" hour minute))
((and (> hour 12) (< hour 24))
(format nil "~D:~2,'0D PM" (- hour 12) minute))
(t
(error "pretty-time got bad hour"))))
(defun leap-days-in-days (days)
;; return the number of leap days between Mar 1 2000 and
;; (Mar 1 2000) + days, where days can be negative
(if (< days 0)
(ceiling (/ (- days) (* 365 4)))
(floor (/ days (* 365 4)))))
(defun current-year ()
(third (mjd-to-gregorian (time-mjd (get-time)))))
(defun current-month ()
(first (mjd-to-gregorian (time-mjd (get-time)))))
(defun current-day ()
(second (mjd-to-gregorian (time-mjd (get-time)))))
(defun parse-date-time (string)
"parses date like 08/08/01, 8.8.2001, eg"
(when (> (length string) 1)
(let ((m (current-month))
(d (current-day))
(y (current-year)))
(let ((integers (mapcar #'parse-integer (hork-integers string))))
(case (length integers)
(1
(setf y (car integers)))
(2
(setf m (car integers))
(setf y (cadr integers)))
(3
(setf m (car integers))
(setf d (cadr integers))
(setf y (caddr integers)))
(t
(return-from parse-date-time))))
(when (< y 100)
(incf y 2000))
(make-time :year y :month m :day d))))
(defun hork-integers (input)
(let ((output '())
(start 0))
(dotimes (x (length input))
(unless (<= 48 (char-code (aref input x)) 57)
(push (subseq input start x) output)
(setf start (1+ x))))
(nreverse (push (subseq input start) output))))
(defun merged-time (day time-of-day)
(%make-wall-time :mjd (time-mjd day)
:second (time-second time-of-day)))
(defun time-meridian (hours)
(cond ((= hours 0)
(values 12 "AM"))
((= hours 12)
(values 12 "PM"))
((< 12 hours)
(values (- hours 12) "PM"))
(t
(values hours "AM"))))
(defgeneric to-string (val &rest keys)
)
(defmethod to-string ((time wall-time) &rest keys)
(destructuring-bind (&key (style :daytime) &allow-other-keys)
keys
(print-date time style)))
(defun print-date (time &optional (style :daytime))
(multiple-value-bind (usec second minute hour day month year dow)
(decode-time time)
(declare (ignore usec second))
(multiple-value-bind (hours meridian)
(time-meridian hour)
(ecase style
(:time-of-day
;; 2:00 PM
(format nil "~d:~2,'0d ~a" hours minute meridian))
(:long-day
;; October 11th, 2000
(format nil "~a ~d, ~d" (month-name month) day year))
(:month
;; October
(month-name month))
(:month-year
;; October 2000
(format nil "~a ~d" (month-name month) year))
(:full
;; 11:08 AM, November 22, 2002
(format nil "~d:~2,'0d ~a, ~a ~d, ~d"
hours minute meridian (month-name month) day year))
(:full+weekday
;; 11:09 AM Friday, November 22, 2002
(format nil "~d:~2,'0d ~a ~a, ~a ~d, ~d"
hours minute meridian (nth dow *day-names*)
(month-name month) day year))
(:daytime
;; 11:09 AM, 11/22/2002
(format-time nil time :format :short-pretty))
(:day
;; 11/22/2002
(format nil "~d/~d/~d" month day year))))))
(defun time-element (time element)
(multiple-value-bind (usec second minute hour day month year dow)
(decode-time time)
(declare (ignore usec))
(ecase element
(:seconds
second)
(:minutes
minute)
(:hours
hour)
(:day-of-month
day)
(:integer-day-of-week
dow)
(:day-of-week
(nth dow *day-keywords*))
(:month
month)
(:year
year))))
(defun date-element (date element)
(time-element (date->time date) element))
(defun format-duration (stream duration &key (precision :minute))
(let ((second (duration-second duration))
(minute (duration-minute duration))
(hour (duration-hour duration))
(day (duration-day duration))
(month (duration-month duration))
(year (duration-year duration))
(return (null stream))
(stream (or stream (make-string-output-stream))))
(ecase precision
(:day
(setf hour 0 second 0 minute 0))
(:hour
(setf second 0 minute 0))
(:minute
(setf second 0))
(:second
t))
(if (= 0 year month day hour minute)
(format stream "0 minutes")
(let ((sent? nil))
(when (< 0 year)
(format stream "~d year~p" year year)
(setf sent? t))
(when (< 0 month)
(when sent?
(write-char #\Space stream))
(format stream "~d month~p" month month)
(setf sent? t))
(when (< 0 day)
(when sent?
(write-char #\Space stream))
(format stream "~d day~p" day day)
(setf sent? t))
(when (< 0 hour)
(when sent?
(write-char #\Space stream))
(format stream "~d hour~p" hour hour)
(setf sent? t))
(when (< 0 minute)
(when sent?
(write-char #\Space stream))
(format stream "~d min~p" minute minute)
(setf sent? t))
(when (< 0 second)
(when sent?
(write-char #\Space stream))
(format stream "~d sec~p" second second))))
(when return
(get-output-stream-string stream))))
(defgeneric midnight (self))
(defmethod midnight ((self wall-time))
"truncate hours, minutes and seconds"
(%make-wall-time :mjd (time-mjd self)))
(defun roll (date &key (year 0) (month 0) (day 0) (second 0) (hour 0)
(minute 0) (usec 0) (destructive nil))
(unless (= 0 year month)
(multiple-value-bind (year-orig month-orig day-orig)
(time-ymd date)
(multiple-value-bind (new-year new-month)
(floor (+ month month-orig (* 12 (+ year year-orig))) 12)
(let ((new-date (make-time :year new-year
:month new-month
:day day-orig
:second (time-second date)
:usec usec)))
(if destructive
(setf (time-mjd date) (time-mjd new-date))
(setq date new-date))))))
(let ((mjd (time-mjd date))
(sec (time-second date)))
(multiple-value-bind (sec-new usec-new)
(floor (+ usec (time-usec date)
(* 1000000
(+ sec second
(* 60 minute)
(* 60 60 hour))))
1000000)
(multiple-value-bind (mjd-new sec-new)
(floor sec-new (* 60 60 24))
(if destructive
(progn
(setf (time-mjd date) (+ mjd mjd-new day)
(time-second date) sec-new
(time-usec date) usec-new)
date)
(%make-wall-time :mjd (+ mjd mjd-new day)
:second sec-new
:usec usec-new))))))
(defun roll-to (date size position)
(ecase size
(:month
(ecase position
(:beginning
(roll date :day (+ 1
(- (time-element date :day-of-month)))))
(:end
(roll date :day (+ (days-in-month (time-element date :month)
(time-element date :year))
(- (time-element date :day-of-month)))))))))
(defun week-containing (time)
(let* ((midn (midnight time))
(dow (time-element midn :integer-day-of-week)))
(list (roll midn :day (- dow))
(roll midn :day (- 7 dow)))))
(defun leap-year? (year)
"t if YEAR is a leap yeap in the Gregorian calendar"
(and (= 0 (mod year 4))
(or (not (= 0 (mod year 100)))
(= 0 (mod year 400)))))
(defun valid-month-p (month)
"t if MONTH exists in the Gregorian calendar"
(<= 1 month 12))
(defun valid-gregorian-date-p (date)
"t if DATE (year month day) exists in the Gregorian calendar"
(let ((max-day (days-in-month (nth 1 date) (nth 0 date))))
(<= 1 (nth 2 date) max-day)))
(defun days-in-month (month year &key (careful t))
"the number of days in MONTH of YEAR, observing Gregorian leap year
rules"
(declare (type fixnum month year))
(when careful
(check-type month (satisfies valid-month-p)
"between 1 (January) and 12 (December)"))
(if (eql month 2) ; feb
(if (leap-year? year)
29 28)
(let ((even (mod (1- month) 2)))
(if (< month 8) ; aug
(- 31 even)
(+ 30 even)))))
(defun day-of-year (year month day &key (careful t))
"the day number within the year of the date DATE. For example,
1987 1 1 returns 1"
(declare (type fixnum year month day))
(when careful
(let ((date (list year month day)))
(check-type date (satisfies valid-gregorian-date-p)
"a valid Gregorian date")))
(let ((doy (+ day (* 31 (1- month)))))
(declare (type fixnum doy))
(when (< 2 month)
(setf doy (- doy (floor (+ 23 (* 4 month)) 10)))
(when (leap-year? year)
(incf doy)))
doy))
(defun parse-yearstring (string)
(let ((year (or (parse-integer-insensitively string)
(extract-roman string))))
(when (and year (< 1500 year 2500))
(make-time :year year))))
(defun parse-integer-insensitively (string)
(let ((start (position-if #'digit-char-p string))
(end (position-if #'digit-char-p string :from-end t)))
(when (and start end)
(parse-integer (subseq string start (1+ end)) :junk-allowed t))))
(defvar *roman-digits*
'((#\M . 1000)
(#\D . 500)
(#\C . 100)
(#\L . 50)
(#\X . 10)
(#\V . 5)
(#\I . 1)))
(defun extract-roman (string &aux parse)
(dotimes (x (length string))
(let ((val (cdr (assoc (aref string x) *roman-digits*))))
(when (and val parse (< (car parse) val))
(push (- (pop parse)) parse))
(push val parse)))
(apply #'+ parse))
;; ------------------------------------------------------------
;; Parsing iso-8601 timestrings
(define-condition iso-8601-syntax-error (sql-user-error)
((bad-component;; year, month whatever
:initarg :bad-component
:reader bad-component))
(:report (lambda (c stream)
(format stream "Bad component: ~A " (bad-component c)))))
(defun parse-timestring (timestring &key (start 0) end junk-allowed)
"parse a timestring and return the corresponding wall-time. If the
timestring starts with P, read a duration; otherwise read an ISO 8601
formatted date string."
(declare (ignore junk-allowed))
(etypecase timestring
(wall-time timestring)
(date (date->time timestring))
(string
(let ((string (subseq timestring start end)))
(if (char= (aref string 0) #\P)
(parse-iso-8601-duration string)
(parse-iso-8601-time string))))))
(defun parse-datestring (datestring &key (start 0) end junk-allowed)
"parse a ISO 8601 timestring and return the corresponding date.
Will throw a hissy fit if the date string is a duration. Will ignore any precision beyond day (hour/min/sec/usec)."
(etypecase datestring
(date datestring)
(wall-time (time->date datestring))
(string
(let ((parsed-value
(parse-timestring
datestring :start start :end end :junk-allowed junk-allowed)))
(etypecase parsed-value
(date parsed-value)
(wall-time (time->date parsed-value)))))))
(defvar *iso-8601-duration-delimiters*
'((#\Y . :years)
(#\D . :days)
(#\H . :hours)
(#\M . :months/minutes)
(#\S . :seconds)))
(defun iso-8601-delimiter (elt)
(cdr (assoc elt *iso-8601-duration-delimiters*)))
(defun iso-8601-duration-subseq (string end)
(let* ((pos (position-if #'iso-8601-delimiter string :end end :from-end t))
(pos2 (when pos
(position-if-not #'digit-char-p string :end pos :from-end t)))
(number (when pos2
(parse-integer
(subseq string (1+ pos2) pos) :junk-allowed t))))
(when number
(values number
(1+ pos)
(1+ pos2)
(iso-8601-delimiter (aref string pos))))))
(defun parse-iso-8601-duration (string)
"return a wall-time from a duration string"
(block parse
(let ((years 0)
(months 0)
(days 0)
(secs 0)
(hours 0)
(minutes 0)
(index (length string))
(months/minutes nil))
(loop
(multiple-value-bind (duration end next-index duration-type)
(iso-8601-duration-subseq string index)
(declare (ignore end))
(case duration-type
(:years
(incf years duration))
(:months/minutes
(if months/minutes
(incf months duration)
(progn
(setq months/minutes t)
(incf minutes duration))))
(:days
(setq months/minutes t)
(incf days duration))
(:hours
(setq months/minutes t)
(incf hours duration))
(:seconds
(incf secs duration))
(t
(return-from parse
(make-duration
:year years :month months :day days :hour hours
:minute minutes :second secs))))
(setf index next-index))))))
;; e.g. 2000-11-11 00:00:00-06
(defun parse-iso-8601-time (string)
"return the wall-time corresponding to the given ISO 8601 datestring"
(multiple-value-bind (year month day hour minute second usec offset)
(syntax-parse-iso-8601 string)
(make-time :year year
:month month
:day day
:hour hour
:minute minute
:second second
:usec usec
:offset offset)))
(defun syntax-parse-iso-8601 (string)
;; use strlen to determine if fractional seconds are present in timestamp
(let ((strlen (length string))
year month day hour minute second usec gmt-sec-offset)
(handler-case
(progn
(setf year (parse-integer string :start 0 :end 4)
month (parse-integer string :start 5 :end 7)
day (parse-integer string :start 8 :end 10)
hour (if (<= 13 strlen)
(parse-integer string :start 11 :end 13)
0)
minute (if (<= 16 strlen)
(parse-integer string :start 14 :end 16)
0)
second (if (<= 19 strlen)
(parse-integer string :start 17 :end 19)
0))
(cond
((and (> strlen 19)
(or (char= #\, (char string 19))
(char= #\. (char string 19))))
(multiple-value-bind (parsed-usec usec-end)
(parse-integer string :start 20 :junk-allowed t)
(let ((parsed-usec (and parsed-usec
(floor (* parsed-usec (expt 10 (+ 6 (- usec-end) 20)))))))
(setf usec (or parsed-usec 0)
gmt-sec-offset (if (<= (+ 3 usec-end) strlen)
(let ((skip-to (or (position #\+ string :start 19)
(position #\- string :start 19))))
(if skip-to
(* 60 60
(parse-integer string :start skip-to
:end (+ skip-to 3)))
0))
0)))))
(t
(setf usec 0
gmt-sec-offset (if (<= 22 strlen)
(let ((skip-to (or (position #\+ string :start 19)
(position #\- string :start 19))))
(if skip-to
(* 60 60
(parse-integer string :start skip-to
:end (+ skip-to 3)))
0))
0))))
(unless (< 0 year)
(error 'iso-8601-syntax-error
:bad-component '(year . 0)))
(unless (< 0 month)
(error 'iso-8601-syntax-error
:bad-component '(month . 0)))
(unless (< 0 day)
(error 'iso-8601-syntax-error
:bad-component '(month . 0)))
(values year month day hour minute second usec gmt-sec-offset))
(simple-error ()
(error 'iso-8601-syntax-error
:bad-component
(car (find-if (lambda (pair) (null (cdr pair)))
`((year . ,year) (month . ,month)
(day . ,day) (hour . ,hour)
(minute . ,minute) (second . ,second)
(usec . ,usec)
(timezone . ,gmt-sec-offset)))))))))
|