HCoop / bpt / emacs.git / blame
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| 3132f345 CW |
1 | ;;; calc-forms.el --- data format conversion functions for Calc |
| 2 | ||
| 58ba2f8f | 3 | ;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004, |
| 114f9c96 | 4 | ;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
| 3132f345 CW |
5 | |
| 6 | ;; Author: David Gillespie <daveg@synaptics.com> | |
| e8fff8ed | 7 | ;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com> |
| 136211a9 EZ |
8 | |
| 9 | ;; This file is part of GNU Emacs. | |
| 10 | ||
| 662c9c64 | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 7c671b23 | 12 | ;; it under the terms of the GNU General Public License as published by |
| 662c9c64 GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
| 14 | ;; (at your option) any later version. | |
| 7c671b23 | 15 | |
| 136211a9 | 16 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 7c671b23 GM |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 | ;; GNU General Public License for more details. | |
| 20 | ||
| 21 | ;; You should have received a copy of the GNU General Public License | |
| 662c9c64 | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 136211a9 | 23 | |
| 3132f345 | 24 | ;;; Commentary: |
| 136211a9 | 25 | |
| 3132f345 | 26 | ;;; Code: |
| 136211a9 EZ |
27 | |
| 28 | ;; This file is autoloaded from calc-ext.el. | |
| 136211a9 | 29 | |
| 76216e5a | 30 | (require 'calc-ext) |
| 136211a9 EZ |
31 | (require 'calc-macs) |
| 32 | ||
| 1976223f JB |
33 | ;; Declare functions which are defined elsewhere. |
| 34 | (declare-function calendar-current-time-zone "cal-dst" ()) | |
| 35 | (declare-function calendar-absolute-from-gregorian "calendar" (date)) | |
| 36 | (declare-function dst-in-effect "cal-dst" (date)) | |
| 37 | ||
| 38 | ||
| 136211a9 EZ |
39 | (defun calc-time () |
| 40 | (interactive) | |
| 41 | (calc-wrapper | |
| 42 | (let ((time (current-time-string))) | |
| 43 | (calc-enter-result 0 "time" | |
| 44 | (list 'mod | |
| 45 | (list 'hms | |
| 5574e209 JB |
46 | (string-to-number (substring time 11 13)) |
| 47 | (string-to-number (substring time 14 16)) | |
| 48 | (string-to-number (substring time 17 19))) | |
| bf77c646 | 49 | (list 'hms 24 0 0)))))) |
| 136211a9 EZ |
50 | |
| 51 | (defun calc-to-hms (arg) | |
| 52 | (interactive "P") | |
| 53 | (calc-wrapper | |
| 54 | (if (calc-is-inverse) | |
| 55 | (if (eq calc-angle-mode 'rad) | |
| 56 | (calc-unary-op ">rad" 'calcFunc-rad arg) | |
| 57 | (calc-unary-op ">deg" 'calcFunc-deg arg)) | |
| bf77c646 | 58 | (calc-unary-op ">hms" 'calcFunc-hms arg)))) |
| 136211a9 EZ |
59 | |
| 60 | (defun calc-from-hms (arg) | |
| 61 | (interactive "P") | |
| 62 | (calc-invert-func) | |
| bf77c646 | 63 | (calc-to-hms arg)) |
| 136211a9 EZ |
64 | |
| 65 | ||
| 66 | (defun calc-hms-notation (fmt) | |
| 67 | (interactive "sHours-minutes-seconds format (hms, @ ' \", etc.): ") | |
| 68 | (calc-wrapper | |
| 69 | (if (string-match "\\`\\([^,; ]+\\)\\([,; ]*\\)\\([^,; ]\\)\\([,; ]*\\)\\([^,; ]\\)\\'" fmt) | |
| 70 | (progn | |
| 71 | (calc-change-mode 'calc-hms-format | |
| 72 | (concat "%s" (math-match-substring fmt 1) | |
| 73 | (math-match-substring fmt 2) | |
| 74 | "%s" (math-match-substring fmt 3) | |
| 75 | (math-match-substring fmt 4) | |
| 76 | "%s" (math-match-substring fmt 5)) | |
| 77 | t) | |
| 78 | (setq-default calc-hms-format calc-hms-format)) ; for minibuffer | |
| 3132f345 | 79 | (error "Bad hours-minutes-seconds format")))) |
| 136211a9 EZ |
80 | |
| 81 | (defun calc-date-notation (fmt arg) | |
| 82 | (interactive "sDate format (e.g., M/D/YY h:mm:ss): \nP") | |
| 83 | (calc-wrapper | |
| 6292c599 | 84 | (if (string-match-p "\\`\\s-*\\'" fmt) |
| 136211a9 EZ |
85 | (setq fmt "1")) |
| 86 | (if (string-match "\\` *[0-9] *\\'" fmt) | |
| 5574e209 | 87 | (setq fmt (nth (string-to-number fmt) calc-standard-date-formats))) |
| 136211a9 EZ |
88 | (or (string-match "[a-zA-Z]" fmt) |
| 89 | (error "Bad date format specifier")) | |
| 90 | (and arg | |
| 91 | (>= (setq arg (prefix-numeric-value arg)) 0) | |
| 92 | (<= arg 9) | |
| 93 | (setq calc-standard-date-formats | |
| 94 | (copy-sequence calc-standard-date-formats)) | |
| 95 | (setcar (nthcdr arg calc-standard-date-formats) fmt)) | |
| 96 | (let ((case-fold-search nil)) | |
| 97 | (and (not (string-match "<.*>" fmt)) | |
| 98 | (string-match "\\`[^hHspP]*\\([^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*[bBhHmpPsS]+[^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*\\)[^hHspP]*\\'" fmt) | |
| 99 | (string-match (concat "[^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*" | |
| 100 | (regexp-quote (math-match-substring fmt 1)) | |
| 101 | "[^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*") fmt) | |
| 102 | (setq fmt (concat (substring fmt 0 (match-beginning 0)) | |
| 103 | "<" | |
| 104 | (substring fmt (match-beginning 0) (match-end 0)) | |
| 105 | ">" | |
| 106 | (substring fmt (match-end 0)))))) | |
| 107 | (let ((lfmt nil) | |
| 108 | (fullfmt nil) | |
| 109 | (time nil) | |
| 110 | pos pos2 sym temp) | |
| 111 | (let ((case-fold-search nil)) | |
| 112 | (and (setq temp (string-match ":[BS]S" fmt)) | |
| 113 | (aset fmt temp ?C))) | |
| 114 | (while (setq pos (string-match "[<>a-zA-Z]" fmt)) | |
| 115 | (if (> pos 0) | |
| 116 | (setq lfmt (cons (substring fmt 0 pos) lfmt))) | |
| 117 | (setq pos2 (1+ pos)) | |
| 118 | (cond ((= (aref fmt pos) ?\<) | |
| 119 | (and time (error "Nested <'s not allowed")) | |
| 120 | (and lfmt (setq fullfmt (nconc lfmt fullfmt) | |
| 121 | lfmt nil)) | |
| 122 | (setq time t)) | |
| 123 | ((= (aref fmt pos) ?\>) | |
| 124 | (or time (error "Misplaced > in format")) | |
| 125 | (and lfmt (setq fullfmt (cons (nreverse lfmt) fullfmt) | |
| 126 | lfmt nil)) | |
| 127 | (setq time nil)) | |
| 128 | (t | |
| 129 | (if (string-match "\\`[^a-zA-Z]*[bB][a-zA-Z]" fmt) | |
| 130 | (setq pos2 (1+ pos2))) | |
| 131 | (while (and (< pos2 (length fmt)) | |
| 132 | (= (upcase (aref fmt pos2)) | |
| 133 | (upcase (aref fmt (1- pos2))))) | |
| 134 | (setq pos2 (1+ pos2))) | |
| 135 | (setq sym (intern (substring fmt pos pos2))) | |
| 136 | (or (memq sym '(Y YY BY YYY YYYY | |
| 137 | aa AA aaa AAA aaaa AAAA | |
| 138 | bb BB bbb BBB bbbb BBBB | |
| 139 | M MM BM mmm Mmm Mmmm MMM MMMM | |
| 140 | D DD BD d ddd bdd | |
| 141 | W www Www Wwww WWW WWWW | |
| 142 | h hh bh H HH BH | |
| 143 | p P pp PP pppp PPPP | |
| 144 | m mm bm s ss bss SS BS C | |
| 145 | N n J j U b)) | |
| 146 | (and (eq sym 'X) (not lfmt) (not fullfmt)) | |
| 147 | (error "Bad format code: %s" sym)) | |
| 148 | (and (memq sym '(bb BB bbb BBB bbbb BBBB)) | |
| 149 | (setq lfmt (cons 'b lfmt))) | |
| 150 | (setq lfmt (cons sym lfmt)))) | |
| 151 | (setq fmt (substring fmt pos2))) | |
| 152 | (or (equal fmt "") | |
| 153 | (setq lfmt (cons fmt lfmt))) | |
| 154 | (and lfmt (if time | |
| 155 | (setq fullfmt (cons (nreverse lfmt) fullfmt)) | |
| 156 | (setq fullfmt (nconc lfmt fullfmt)))) | |
| bf77c646 | 157 | (calc-change-mode 'calc-date-format (nreverse fullfmt) t)))) |
| 136211a9 EZ |
158 | |
| 159 | ||
| 160 | (defun calc-hms-mode () | |
| 161 | (interactive) | |
| 162 | (calc-wrapper | |
| 163 | (calc-change-mode 'calc-angle-mode 'hms) | |
| 3132f345 | 164 | (message "Angles measured in degrees-minutes-seconds"))) |
| 136211a9 EZ |
165 | |
| 166 | ||
| 167 | (defun calc-now (arg) | |
| 168 | (interactive "P") | |
| bf77c646 | 169 | (calc-date-zero-args "now" 'calcFunc-now arg)) |
| 136211a9 EZ |
170 | |
| 171 | (defun calc-date-part (arg) | |
| 172 | (interactive "NPart code (1-9 = Y,M,D,H,M,S,Wd,Yd,Hms): ") | |
| 173 | (if (or (< arg 1) (> arg 9)) | |
| 174 | (error "Part code out of range")) | |
| 175 | (calc-wrapper | |
| 176 | (calc-enter-result 1 | |
| 177 | (nth arg '(nil "year" "mnth" "day" "hour" "minu" | |
| 178 | "sec" "wday" "yday" "hmst")) | |
| 179 | (list (nth arg '(nil calcFunc-year calcFunc-month | |
| 180 | calcFunc-day calcFunc-hour | |
| 181 | calcFunc-minute calcFunc-second | |
| 182 | calcFunc-weekday calcFunc-yearday | |
| 183 | calcFunc-time)) | |
| bf77c646 | 184 | (calc-top-n 1))))) |
| 136211a9 EZ |
185 | |
| 186 | (defun calc-date (arg) | |
| 187 | (interactive "p") | |
| 188 | (if (or (< arg 1) (> arg 6)) | |
| 189 | (error "Between one and six arguments are allowed")) | |
| 190 | (calc-wrapper | |
| bf77c646 | 191 | (calc-enter-result arg "date" (cons 'calcFunc-date (calc-top-list-n arg))))) |
| 136211a9 EZ |
192 | |
| 193 | (defun calc-julian (arg) | |
| 194 | (interactive "P") | |
| bf77c646 | 195 | (calc-date-one-arg "juln" 'calcFunc-julian arg)) |
| 136211a9 EZ |
196 | |
| 197 | (defun calc-unix-time (arg) | |
| 198 | (interactive "P") | |
| bf77c646 | 199 | (calc-date-one-arg "unix" 'calcFunc-unixtime arg)) |
| 136211a9 EZ |
200 | |
| 201 | (defun calc-time-zone (arg) | |
| 202 | (interactive "P") | |
| bf77c646 | 203 | (calc-date-zero-args "zone" 'calcFunc-tzone arg)) |
| 136211a9 EZ |
204 | |
| 205 | (defun calc-convert-time-zones (old &optional new) | |
| 206 | (interactive "sFrom time zone: ") | |
| 207 | (calc-wrapper | |
| 208 | (if (equal old "$") | |
| 209 | (calc-enter-result 3 "tzcv" (cons 'calcFunc-tzconv (calc-top-list-n 3))) | |
| 210 | (if (equal old "") (setq old "local")) | |
| 211 | (or new | |
| 212 | (setq new (read-string (concat "From time zone: " old | |
| 213 | ", to zone: ")))) | |
| 214 | (if (stringp old) (setq old (math-read-expr old))) | |
| 215 | (if (eq (car-safe old) 'error) | |
| 1e9a52a5 | 216 | (error "Error in expression: %S" (nth 1 old))) |
| 136211a9 EZ |
217 | (if (equal new "") (setq new "local")) |
| 218 | (if (stringp new) (setq new (math-read-expr new))) | |
| 219 | (if (eq (car-safe new) 'error) | |
| 1e9a52a5 | 220 | (error "Error in expression: %S" (nth 1 new))) |
| 136211a9 | 221 | (calc-enter-result 1 "tzcv" (list 'calcFunc-tzconv |
| bf77c646 | 222 | (calc-top-n 1) old new))))) |
| 136211a9 EZ |
223 | |
| 224 | (defun calc-new-week (arg) | |
| 225 | (interactive "P") | |
| bf77c646 | 226 | (calc-date-one-arg "nwwk" 'calcFunc-newweek arg)) |
| 136211a9 EZ |
227 | |
| 228 | (defun calc-new-month (arg) | |
| 229 | (interactive "P") | |
| bf77c646 | 230 | (calc-date-one-arg "nwmn" 'calcFunc-newmonth arg)) |
| 136211a9 EZ |
231 | |
| 232 | (defun calc-new-year (arg) | |
| 233 | (interactive "P") | |
| bf77c646 | 234 | (calc-date-one-arg "nwyr" 'calcFunc-newyear arg)) |
| 136211a9 EZ |
235 | |
| 236 | (defun calc-inc-month (arg) | |
| 237 | (interactive "p") | |
| bf77c646 | 238 | (calc-date-one-arg "incm" 'calcFunc-incmonth arg)) |
| 136211a9 EZ |
239 | |
| 240 | (defun calc-business-days-plus (arg) | |
| 241 | (interactive "P") | |
| 242 | (calc-wrapper | |
| bf77c646 | 243 | (calc-binary-op "bus+" 'calcFunc-badd arg))) |
| 136211a9 EZ |
244 | |
| 245 | (defun calc-business-days-minus (arg) | |
| 246 | (interactive "P") | |
| 247 | (calc-wrapper | |
| bf77c646 | 248 | (calc-binary-op "bus-" 'calcFunc-bsub arg))) |
| 136211a9 EZ |
249 | |
| 250 | (defun calc-date-zero-args (prefix func arg) | |
| 251 | (calc-wrapper | |
| 252 | (if (consp arg) | |
| 253 | (calc-enter-result 1 prefix (list func (calc-top-n 1))) | |
| 254 | (calc-enter-result 0 prefix (if arg | |
| 255 | (list func (prefix-numeric-value arg)) | |
| bf77c646 | 256 | (list func)))))) |
| 136211a9 EZ |
257 | |
| 258 | (defun calc-date-one-arg (prefix func arg) | |
| 259 | (calc-wrapper | |
| 260 | (if (consp arg) | |
| 261 | (calc-enter-result 2 prefix (cons func (calc-top-list-n 2))) | |
| 262 | (calc-enter-result 1 prefix (if arg | |
| 263 | (list func (calc-top-n 1) | |
| 264 | (prefix-numeric-value arg)) | |
| bf77c646 | 265 | (list func (calc-top-n 1))))))) |
| 136211a9 EZ |
266 | |
| 267 | ||
| 268 | ;;;; Hours-minutes-seconds forms. | |
| 269 | ||
| 270 | (defun math-normalize-hms (a) | |
| 271 | (let ((h (math-normalize (nth 1 a))) | |
| 272 | (m (math-normalize (nth 2 a))) | |
| 273 | (s (let ((calc-internal-prec (max (- calc-internal-prec 4) 3))) | |
| 274 | (math-normalize (nth 3 a))))) | |
| 275 | (if (math-negp h) | |
| 276 | (progn | |
| 277 | (if (math-posp s) | |
| 278 | (setq s (math-add s -60) | |
| 279 | m (math-add m 1))) | |
| 280 | (if (math-posp m) | |
| 281 | (setq m (math-add m -60) | |
| 282 | h (math-add h 1))) | |
| 283 | (if (not (Math-lessp -60 s)) | |
| 284 | (setq s (math-add s 60) | |
| 285 | m (math-add m -1))) | |
| 286 | (if (not (Math-lessp -60 m)) | |
| 287 | (setq m (math-add m 60) | |
| 288 | h (math-add h -1)))) | |
| 289 | (if (math-negp s) | |
| 290 | (setq s (math-add s 60) | |
| 291 | m (math-add m -1))) | |
| 292 | (if (math-negp m) | |
| 293 | (setq m (math-add m 60) | |
| 294 | h (math-add h -1))) | |
| 295 | (if (not (Math-lessp s 60)) | |
| 296 | (setq s (math-add s -60) | |
| 297 | m (math-add m 1))) | |
| 298 | (if (not (Math-lessp m 60)) | |
| 299 | (setq m (math-add m -60) | |
| 300 | h (math-add h 1)))) | |
| 301 | (if (and (eq (car-safe s) 'float) | |
| 302 | (<= (+ (math-numdigs (nth 1 s)) (nth 2 s)) | |
| 303 | (- 2 calc-internal-prec))) | |
| 304 | (setq s 0)) | |
| bf77c646 | 305 | (list 'hms h m s))) |
| 136211a9 EZ |
306 | |
| 307 | ;;; Convert A from ANG or current angular mode to HMS format. | |
| 308 | (defun math-to-hms (a &optional ang) ; [X R] [Public] | |
| 309 | (cond ((eq (car-safe a) 'hms) a) | |
| 310 | ((eq (car-safe a) 'sdev) | |
| 311 | (math-make-sdev (math-to-hms (nth 1 a)) | |
| 312 | (math-to-hms (nth 2 a)))) | |
| 313 | ((not (Math-numberp a)) | |
| 314 | (list 'calcFunc-hms a)) | |
| 315 | ((math-negp a) | |
| 316 | (math-neg (math-to-hms (math-neg a) ang))) | |
| 317 | ((eq (or ang calc-angle-mode) 'rad) | |
| 318 | (math-to-hms (math-div a (math-pi-over-180)) 'deg)) | |
| 319 | ((memq (car-safe a) '(cplx polar)) a) | |
| 320 | (t | |
| 321 | ;(setq a (let ((calc-internal-prec (max (1- calc-internal-prec) 3))) | |
| 322 | ; (math-normalize a))) | |
| 323 | (math-normalize | |
| 324 | (let* ((b (math-mul a 3600)) | |
| 325 | (hm (math-trunc (math-div b 60))) | |
| 326 | (hmd (math-idivmod hm 60))) | |
| 327 | (list 'hms | |
| 328 | (car hmd) | |
| 329 | (cdr hmd) | |
| bf77c646 | 330 | (math-sub b (math-mul hm 60)))))))) |
| 136211a9 EZ |
331 | (defun calcFunc-hms (h &optional m s) |
| 332 | (or (Math-realp h) (math-reject-arg h 'realp)) | |
| 333 | (or m (setq m 0)) | |
| 334 | (or (Math-realp m) (math-reject-arg m 'realp)) | |
| 335 | (or s (setq s 0)) | |
| 336 | (or (Math-realp s) (math-reject-arg s 'realp)) | |
| 337 | (if (and (not (Math-lessp m 0)) (Math-lessp m 60) | |
| 338 | (not (Math-lessp s 0)) (Math-lessp s 60)) | |
| 339 | (math-add (math-to-hms h) | |
| 340 | (list 'hms 0 m s)) | |
| 341 | (math-to-hms (math-add h | |
| 342 | (math-add (math-div (or m 0) 60) | |
| 343 | (math-div (or s 0) 3600))) | |
| bf77c646 | 344 | 'deg))) |
| 136211a9 EZ |
345 | |
| 346 | ;;; Convert A from HMS format to ANG or current angular mode. | |
| 347 | (defun math-from-hms (a &optional ang) ; [R X] [Public] | |
| 348 | (cond ((not (eq (car-safe a) 'hms)) | |
| 349 | (if (Math-numberp a) | |
| 350 | a | |
| 351 | (if (eq (car-safe a) 'sdev) | |
| 352 | (math-make-sdev (math-from-hms (nth 1 a) ang) | |
| 353 | (math-from-hms (nth 2 a) ang)) | |
| 354 | (if (eq (or ang calc-angle-mode) 'rad) | |
| 355 | (list 'calcFunc-rad a) | |
| 356 | (list 'calcFunc-deg a))))) | |
| 357 | ((math-negp a) | |
| 358 | (math-neg (math-from-hms (math-neg a) ang))) | |
| 359 | ((eq (or ang calc-angle-mode) 'rad) | |
| 360 | (math-mul (math-from-hms a 'deg) (math-pi-over-180))) | |
| 361 | (t | |
| 362 | (math-add (math-div (math-add (math-div (nth 3 a) | |
| 363 | '(float 6 1)) | |
| 364 | (nth 2 a)) | |
| 365 | 60) | |
| bf77c646 | 366 | (nth 1 a))))) |
| 136211a9 EZ |
367 | |
| 368 | ;;;; Date forms. | |
| 369 | ||
| 370 | ||
| 371 | ;;; Some of these functions are adapted from Edward Reingold's "calendar.el". | |
| 372 | ;;; These versions are rewritten to use arbitrary-size integers. | |
| 373 | ;;; The Julian calendar is used up to 9/2/1752, after which the Gregorian | |
| 374 | ;;; calendar is used; the first day after 9/2/1752 is 9/14/1752. | |
| 375 | ||
| 376 | ;;; A numerical date is the number of days since midnight on | |
| 377 | ;;; the morning of January 1, 1 A.D. If the date is a non-integer, | |
| 378 | ;;; it represents a specific date and time. | |
| 379 | ;;; A "dt" is a list of the form, (year month day), corresponding to | |
| 380 | ;;; an integer code, or (year month day hour minute second), corresponding | |
| 381 | ;;; to a non-integer code. | |
| 382 | ||
| 383 | (defun math-date-to-dt (value) | |
| 384 | (if (eq (car-safe value) 'date) | |
| 385 | (setq value (nth 1 value))) | |
| 386 | (or (math-realp value) | |
| 387 | (math-reject-arg value 'datep)) | |
| 388 | (let* ((parts (math-date-parts value)) | |
| 389 | (date (car parts)) | |
| 390 | (time (nth 1 parts)) | |
| 391 | (month 1) | |
| 392 | day | |
| 393 | (year (math-quotient (math-add date (if (Math-lessp date 711859) | |
| 394 | 365 ; for speed, we take | |
| 395 | -108)) ; >1950 as a special case | |
| 396 | (if (math-negp value) 366 365))) | |
| 397 | ; this result may be an overestimate | |
| 398 | temp) | |
| 399 | (while (Math-lessp date (setq temp (math-absolute-from-date year 1 1))) | |
| 400 | (setq year (math-add year -1))) | |
| 401 | (if (eq year 0) (setq year -1)) | |
| 402 | (setq date (1+ (math-sub date temp))) | |
| 403 | (and (eq year 1752) (>= date 247) | |
| 404 | (setq date (+ date 11))) | |
| 405 | (setq temp (if (math-leap-year-p year) | |
| 406 | [1 32 61 92 122 153 183 214 245 275 306 336 999] | |
| 407 | [1 32 60 91 121 152 182 213 244 274 305 335 999])) | |
| 408 | (while (>= date (aref temp month)) | |
| 409 | (setq month (1+ month))) | |
| 410 | (setq day (1+ (- date (aref temp (1- month))))) | |
| 411 | (if (math-integerp value) | |
| 412 | (list year month day) | |
| 413 | (list year month day | |
| 414 | (/ time 3600) | |
| 415 | (% (/ time 60) 60) | |
| bf77c646 | 416 | (math-add (% time 60) (nth 2 parts)))))) |
| 136211a9 EZ |
417 | |
| 418 | (defun math-dt-to-date (dt) | |
| 419 | (or (integerp (nth 1 dt)) | |
| 420 | (math-reject-arg (nth 1 dt) 'fixnump)) | |
| 421 | (if (or (< (nth 1 dt) 1) (> (nth 1 dt) 12)) | |
| 422 | (math-reject-arg (nth 1 dt) "Month value is out of range")) | |
| 423 | (or (integerp (nth 2 dt)) | |
| 424 | (math-reject-arg (nth 2 dt) 'fixnump)) | |
| 425 | (if (or (< (nth 2 dt) 1) (> (nth 2 dt) 31)) | |
| 426 | (math-reject-arg (nth 2 dt) "Day value is out of range")) | |
| 427 | (let ((date (math-absolute-from-date (car dt) (nth 1 dt) (nth 2 dt)))) | |
| 428 | (if (nth 3 dt) | |
| 429 | (math-add (math-float date) | |
| 430 | (math-div (math-add (+ (* (nth 3 dt) 3600) | |
| 431 | (* (nth 4 dt) 60)) | |
| 432 | (nth 5 dt)) | |
| 433 | '(float 864 2))) | |
| bf77c646 | 434 | date))) |
| 136211a9 EZ |
435 | |
| 436 | (defun math-date-parts (value &optional offset) | |
| 437 | (let* ((date (math-floor value)) | |
| 438 | (time (math-round (math-mul (math-sub value (or offset date)) 86400) | |
| 439 | (and (> calc-internal-prec 12) | |
| 440 | (- calc-internal-prec 12)))) | |
| 441 | (ftime (math-floor time))) | |
| 442 | (list date | |
| 443 | ftime | |
| bf77c646 | 444 | (math-sub time ftime)))) |
| 136211a9 EZ |
445 | |
| 446 | ||
| 447 | (defun math-this-year () | |
| 5574e209 | 448 | (string-to-number (substring (current-time-string) -4))) |
| 136211a9 EZ |
449 | |
| 450 | (defun math-leap-year-p (year) | |
| 451 | (if (Math-lessp year 1752) | |
| 452 | (if (math-negp year) | |
| 453 | (= (math-imod (math-neg year) 4) 1) | |
| 454 | (= (math-imod year 4) 0)) | |
| 455 | (setq year (math-imod year 400)) | |
| 456 | (or (and (= (% year 4) 0) (/= (% year 100) 0)) | |
| bf77c646 | 457 | (= year 0)))) |
| 136211a9 EZ |
458 | |
| 459 | (defun math-days-in-month (year month) | |
| 460 | (if (and (= month 2) (math-leap-year-p year)) | |
| 461 | 29 | |
| bf77c646 | 462 | (aref [31 28 31 30 31 30 31 31 30 31 30 31] (1- month)))) |
| 136211a9 EZ |
463 | |
| 464 | (defun math-day-number (year month day) | |
| 465 | (let ((day-of-year (+ day (* 31 (1- month))))) | |
| 466 | (if (> month 2) | |
| 467 | (progn | |
| 468 | (setq day-of-year (- day-of-year (/ (+ 23 (* 4 month)) 10))) | |
| 469 | (if (math-leap-year-p year) | |
| 470 | (setq day-of-year (1+ day-of-year))))) | |
| 471 | (and (eq year 1752) | |
| 472 | (or (> month 9) | |
| 473 | (and (= month 9) (>= day 14))) | |
| 474 | (setq day-of-year (- day-of-year 11))) | |
| bf77c646 | 475 | day-of-year)) |
| 136211a9 EZ |
476 | |
| 477 | (defun math-absolute-from-date (year month day) | |
| 478 | (if (eq year 0) (setq year -1)) | |
| 479 | (let ((yearm1 (math-sub year 1))) | |
| 480 | (math-sub (math-add (math-day-number year month day) | |
| 481 | (math-add (math-mul 365 yearm1) | |
| 482 | (if (math-posp year) | |
| 483 | (math-quotient yearm1 4) | |
| 484 | (math-sub 365 | |
| 485 | (math-quotient (math-sub 3 year) | |
| 486 | 4))))) | |
| 487 | (if (or (Math-lessp year 1753) | |
| 488 | (and (eq year 1752) (<= month 9))) | |
| 489 | 1 | |
| 490 | (let ((correction (math-mul (math-quotient yearm1 100) 3))) | |
| 491 | (let ((res (math-idivmod correction 4))) | |
| 492 | (math-add (if (= (cdr res) 0) | |
| 493 | -1 | |
| 494 | 0) | |
| bf77c646 | 495 | (car res)))))))) |
| 136211a9 EZ |
496 | |
| 497 | ||
| 498 | ;;; It is safe to redefine these in your .emacs file to use a different | |
| 499 | ;;; language. | |
| 500 | ||
| 501 | (defvar math-long-weekday-names '( "Sunday" "Monday" "Tuesday" "Wednesday" | |
| 502 | "Thursday" "Friday" "Saturday" )) | |
| 503 | (defvar math-short-weekday-names '( "Sun" "Mon" "Tue" "Wed" | |
| 504 | "Thu" "Fri" "Sat" )) | |
| 505 | ||
| 506 | (defvar math-long-month-names '( "January" "February" "March" "April" | |
| 507 | "May" "June" "July" "August" | |
| 508 | "September" "October" "November" "December" )) | |
| 509 | (defvar math-short-month-names '( "Jan" "Feb" "Mar" "Apr" "May" "Jun" | |
| 510 | "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" )) | |
| 511 | ||
| 512 | ||
| 3132f345 | 513 | (defvar math-format-date-cache nil) |
| 98223359 | 514 | |
| d55ebb63 | 515 | ;; The variables math-fd-date, math-fd-dt, math-fd-year, |
| 98223359 JB |
516 | ;; math-fd-month, math-fd-day, math-fd-weekday, math-fd-hour, |
| 517 | ;; math-fd-minute, math-fd-second, math-fd-bc-flag are local | |
| 518 | ;; to math-format-date, but are used by math-format-date-part, | |
| 519 | ;; which is called by math-format-date. | |
| 520 | (defvar math-fd-date) | |
| 521 | (defvar math-fd-dt) | |
| 522 | (defvar math-fd-year) | |
| 523 | (defvar math-fd-month) | |
| 524 | (defvar math-fd-day) | |
| 525 | (defvar math-fd-weekday) | |
| 526 | (defvar math-fd-hour) | |
| 527 | (defvar math-fd-minute) | |
| 528 | (defvar math-fd-second) | |
| 529 | (defvar math-fd-bc-flag) | |
| 530 | ||
| 531 | (defun math-format-date (math-fd-date) | |
| 532 | (if (eq (car-safe math-fd-date) 'date) | |
| 533 | (setq math-fd-date (nth 1 math-fd-date))) | |
| 534 | (let ((entry (list math-fd-date calc-internal-prec calc-date-format))) | |
| 136211a9 | 535 | (or (cdr (assoc entry math-format-date-cache)) |
| 98223359 | 536 | (let* ((math-fd-dt nil) |
| 136211a9 EZ |
537 | (calc-group-digits nil) |
| 538 | (calc-leading-zeros nil) | |
| 539 | (calc-number-radix 10) | |
| 2d1c8c66 | 540 | (calc-twos-complement-mode nil) |
| d55ebb63 | 541 | math-fd-year math-fd-month math-fd-day math-fd-weekday |
| 98223359 JB |
542 | math-fd-hour math-fd-minute math-fd-second |
| 543 | (math-fd-bc-flag nil) | |
| 136211a9 EZ |
544 | (fmt (apply 'concat (mapcar 'math-format-date-part |
| 545 | calc-date-format)))) | |
| 546 | (setq math-format-date-cache (cons (cons entry fmt) | |
| 547 | math-format-date-cache)) | |
| 98223359 JB |
548 | (and (setq math-fd-dt (nthcdr 10 math-format-date-cache)) |
| 549 | (setcdr math-fd-dt nil)) | |
| bf77c646 | 550 | fmt)))) |
| 136211a9 | 551 | |
| 98e9ffe3 JB |
552 | (defconst math-julian-date-beginning '(float 17214235 -1) |
| 553 | "The beginning of the Julian calendar, | |
| 554 | as measured in the number of days before January 1 of the year 1AD.") | |
| 555 | ||
| 556 | (defconst math-julian-date-beginning-int 1721424 | |
| 557 | "The beginning of the Julian calendar, | |
| 558 | as measured in the integer number of days before January 1 of the year 1AD.") | |
| 559 | ||
| 136211a9 EZ |
560 | (defun math-format-date-part (x) |
| 561 | (cond ((stringp x) | |
| 562 | x) | |
| 563 | ((listp x) | |
| 98223359 | 564 | (if (math-integerp math-fd-date) |
| 136211a9 EZ |
565 | "" |
| 566 | (apply 'concat (mapcar 'math-format-date-part x)))) | |
| 567 | ((eq x 'X) | |
| 568 | "") | |
| 569 | ((eq x 'N) | |
| 98223359 | 570 | (math-format-number math-fd-date)) |
| 136211a9 | 571 | ((eq x 'n) |
| 98223359 | 572 | (math-format-number (math-floor math-fd-date))) |
| 136211a9 | 573 | ((eq x 'J) |
| 3b6d80bc | 574 | (math-format-number |
| 98e9ffe3 | 575 | (math-add math-fd-date math-julian-date-beginning))) |
| 136211a9 | 576 | ((eq x 'j) |
| 3b6d80bc JB |
577 | (math-format-number (math-add |
| 578 | (math-floor math-fd-date) | |
| 98e9ffe3 | 579 | math-julian-date-beginning-int))) |
| 136211a9 | 580 | ((eq x 'U) |
| 98223359 | 581 | (math-format-number (nth 1 (math-date-parts math-fd-date 719164)))) |
| 136211a9 | 582 | ((progn |
| 98223359 | 583 | (or math-fd-dt |
| 136211a9 | 584 | (progn |
| 98223359 JB |
585 | (setq math-fd-dt (math-date-to-dt math-fd-date) |
| 586 | math-fd-year (car math-fd-dt) | |
| 587 | math-fd-month (nth 1 math-fd-dt) | |
| 588 | math-fd-day (nth 2 math-fd-dt) | |
| d55ebb63 | 589 | math-fd-weekday (math-mod |
| 98223359 JB |
590 | (math-add (math-floor math-fd-date) 6) 7) |
| 591 | math-fd-hour (nth 3 math-fd-dt) | |
| 592 | math-fd-minute (nth 4 math-fd-dt) | |
| 593 | math-fd-second (nth 5 math-fd-dt)) | |
| 136211a9 | 594 | (and (memq 'b calc-date-format) |
| 98223359 JB |
595 | (math-negp math-fd-year) |
| 596 | (setq math-fd-year (math-neg math-fd-year) | |
| 597 | math-fd-bc-flag t)))) | |
| 136211a9 | 598 | (memq x '(Y YY BY))) |
| 98223359 | 599 | (if (and (integerp math-fd-year) (> math-fd-year 1940) (< math-fd-year 2040)) |
| 136211a9 EZ |
600 | (format (cond ((eq x 'YY) "%02d") |
| 601 | ((eq x 'BYY) "%2d") | |
| 602 | (t "%d")) | |
| 98223359 JB |
603 | (% math-fd-year 100)) |
| 604 | (if (and (natnump math-fd-year) (< math-fd-year 100)) | |
| 605 | (format "+%d" math-fd-year) | |
| 606 | (math-format-number math-fd-year)))) | |
| 136211a9 | 607 | ((eq x 'YYY) |
| 98223359 | 608 | (math-format-number math-fd-year)) |
| 136211a9 | 609 | ((eq x 'YYYY) |
| 98223359 JB |
610 | (if (and (natnump math-fd-year) (< math-fd-year 100)) |
| 611 | (format "+%d" math-fd-year) | |
| 612 | (math-format-number math-fd-year))) | |
| 136211a9 EZ |
613 | ((eq x 'b) "") |
| 614 | ((eq x 'aa) | |
| 98223359 | 615 | (and (not math-fd-bc-flag) "ad")) |
| 136211a9 | 616 | ((eq x 'AA) |
| 98223359 | 617 | (and (not math-fd-bc-flag) "AD")) |
| 136211a9 | 618 | ((eq x 'aaa) |
| 98223359 | 619 | (and (not math-fd-bc-flag) "ad ")) |
| 136211a9 | 620 | ((eq x 'AAA) |
| 98223359 | 621 | (and (not math-fd-bc-flag) "AD ")) |
| 136211a9 | 622 | ((eq x 'aaaa) |
| 98223359 | 623 | (and (not math-fd-bc-flag) "a.d.")) |
| 136211a9 | 624 | ((eq x 'AAAA) |
| 98223359 | 625 | (and (not math-fd-bc-flag) "A.D.")) |
| 136211a9 | 626 | ((eq x 'bb) |
| 98223359 | 627 | (and math-fd-bc-flag "bc")) |
| 136211a9 | 628 | ((eq x 'BB) |
| 98223359 | 629 | (and math-fd-bc-flag "BC")) |
| 136211a9 | 630 | ((eq x 'bbb) |
| 98223359 | 631 | (and math-fd-bc-flag " bc")) |
| 136211a9 | 632 | ((eq x 'BBB) |
| 98223359 | 633 | (and math-fd-bc-flag " BC")) |
| 136211a9 | 634 | ((eq x 'bbbb) |
| 98223359 | 635 | (and math-fd-bc-flag "b.c.")) |
| 136211a9 | 636 | ((eq x 'BBBB) |
| 98223359 | 637 | (and math-fd-bc-flag "B.C.")) |
| 136211a9 | 638 | ((eq x 'M) |
| 98223359 | 639 | (format "%d" math-fd-month)) |
| 136211a9 | 640 | ((eq x 'MM) |
| 98223359 | 641 | (format "%02d" math-fd-month)) |
| 136211a9 | 642 | ((eq x 'BM) |
| 98223359 | 643 | (format "%2d" math-fd-month)) |
| 136211a9 | 644 | ((eq x 'mmm) |
| 98223359 | 645 | (downcase (nth (1- math-fd-month) math-short-month-names))) |
| 136211a9 | 646 | ((eq x 'Mmm) |
| 98223359 | 647 | (nth (1- math-fd-month) math-short-month-names)) |
| 136211a9 | 648 | ((eq x 'MMM) |
| 98223359 | 649 | (upcase (nth (1- math-fd-month) math-short-month-names))) |
| 136211a9 | 650 | ((eq x 'Mmmm) |
| 98223359 | 651 | (nth (1- math-fd-month) math-long-month-names)) |
| 136211a9 | 652 | ((eq x 'MMMM) |
| 98223359 | 653 | (upcase (nth (1- math-fd-month) math-long-month-names))) |
| 136211a9 | 654 | ((eq x 'D) |
| 98223359 | 655 | (format "%d" math-fd-day)) |
| 136211a9 | 656 | ((eq x 'DD) |
| 98223359 | 657 | (format "%02d" math-fd-day)) |
| 136211a9 | 658 | ((eq x 'BD) |
| 98223359 | 659 | (format "%2d" math-fd-day)) |
| 136211a9 | 660 | ((eq x 'W) |
| 98223359 | 661 | (format "%d" math-fd-weekday)) |
| 136211a9 | 662 | ((eq x 'www) |
| 98223359 | 663 | (downcase (nth math-fd-weekday math-short-weekday-names))) |
| 136211a9 | 664 | ((eq x 'Www) |
| 98223359 | 665 | (nth math-fd-weekday math-short-weekday-names)) |
| 136211a9 | 666 | ((eq x 'WWW) |
| 98223359 | 667 | (upcase (nth math-fd-weekday math-short-weekday-names))) |
| 136211a9 | 668 | ((eq x 'Wwww) |
| 98223359 | 669 | (nth math-fd-weekday math-long-weekday-names)) |
| 136211a9 | 670 | ((eq x 'WWWW) |
| 98223359 | 671 | (upcase (nth math-fd-weekday math-long-weekday-names))) |
| 136211a9 | 672 | ((eq x 'd) |
| 98223359 | 673 | (format "%d" (math-day-number math-fd-year math-fd-month math-fd-day))) |
| 136211a9 | 674 | ((eq x 'ddd) |
| 98223359 | 675 | (format "%03d" (math-day-number math-fd-year math-fd-month math-fd-day))) |
| 136211a9 | 676 | ((eq x 'bdd) |
| 98223359 | 677 | (format "%3d" (math-day-number math-fd-year math-fd-month math-fd-day))) |
| 136211a9 | 678 | ((eq x 'h) |
| 98223359 | 679 | (and math-fd-hour (format "%d" math-fd-hour))) |
| 136211a9 | 680 | ((eq x 'hh) |
| 98223359 | 681 | (and math-fd-hour (format "%02d" math-fd-hour))) |
| 136211a9 | 682 | ((eq x 'bh) |
| 98223359 | 683 | (and math-fd-hour (format "%2d" math-fd-hour))) |
| 136211a9 | 684 | ((eq x 'H) |
| 98223359 | 685 | (and math-fd-hour (format "%d" (1+ (% (+ math-fd-hour 11) 12))))) |
| 136211a9 | 686 | ((eq x 'HH) |
| 98223359 | 687 | (and math-fd-hour (format "%02d" (1+ (% (+ math-fd-hour 11) 12))))) |
| 136211a9 | 688 | ((eq x 'BH) |
| 98223359 | 689 | (and math-fd-hour (format "%2d" (1+ (% (+ math-fd-hour 11) 12))))) |
| 136211a9 | 690 | ((eq x 'p) |
| 98223359 | 691 | (and math-fd-hour (if (< math-fd-hour 12) "a" "p"))) |
| 136211a9 | 692 | ((eq x 'P) |
| 98223359 | 693 | (and math-fd-hour (if (< math-fd-hour 12) "A" "P"))) |
| 136211a9 | 694 | ((eq x 'pp) |
| 98223359 | 695 | (and math-fd-hour (if (< math-fd-hour 12) "am" "pm"))) |
| 136211a9 | 696 | ((eq x 'PP) |
| 98223359 | 697 | (and math-fd-hour (if (< math-fd-hour 12) "AM" "PM"))) |
| 136211a9 | 698 | ((eq x 'pppp) |
| 98223359 | 699 | (and math-fd-hour (if (< math-fd-hour 12) "a.m." "p.m."))) |
| 136211a9 | 700 | ((eq x 'PPPP) |
| 98223359 | 701 | (and math-fd-hour (if (< math-fd-hour 12) "A.M." "P.M."))) |
| 136211a9 | 702 | ((eq x 'm) |
| 98223359 | 703 | (and math-fd-minute (format "%d" math-fd-minute))) |
| 136211a9 | 704 | ((eq x 'mm) |
| 98223359 | 705 | (and math-fd-minute (format "%02d" math-fd-minute))) |
| 136211a9 | 706 | ((eq x 'bm) |
| 98223359 | 707 | (and math-fd-minute (format "%2d" math-fd-minute))) |
| 136211a9 | 708 | ((eq x 'C) |
| 98223359 | 709 | (and math-fd-second (not (math-zerop math-fd-second)) |
| 136211a9 EZ |
710 | ":")) |
| 711 | ((memq x '(s ss bs SS BS)) | |
| 98223359 JB |
712 | (and math-fd-second |
| 713 | (not (and (memq x '(SS BS)) (math-zerop math-fd-second))) | |
| 714 | (if (integerp math-fd-second) | |
| 136211a9 EZ |
715 | (format (cond ((memq x '(ss SS)) "%02d") |
| 716 | ((memq x '(bs BS)) "%2d") | |
| 717 | (t "%d")) | |
| 98223359 JB |
718 | math-fd-second) |
| 719 | (concat (if (Math-lessp math-fd-second 10) | |
| 136211a9 EZ |
720 | (cond ((memq x '(ss SS)) "0") |
| 721 | ((memq x '(bs BS)) " ") | |
| 722 | (t "")) | |
| 723 | "") | |
| 724 | (let ((calc-float-format | |
| 725 | (list 'fix (min (- 12 calc-internal-prec) | |
| 726 | 0)))) | |
| 98223359 | 727 | (math-format-number math-fd-second)))))))) |
| 136211a9 | 728 | |
| 98223359 JB |
729 | ;; The variable math-pd-str is local to math-parse-date and |
| 730 | ;; math-parse-standard-date, but is used by math-parse-date-word, | |
| 731 | ;; which is called by math-parse-date and math-parse-standard-date. | |
| 732 | (defvar math-pd-str) | |
| 136211a9 | 733 | |
| 98223359 | 734 | (defun math-parse-date (math-pd-str) |
| 136211a9 | 735 | (catch 'syntax |
| 98223359 JB |
736 | (or (math-parse-standard-date math-pd-str t) |
| 737 | (math-parse-standard-date math-pd-str nil) | |
| 738 | (and (string-match "\\`[^-+/0-9a-zA-Z]*\\([-+]?[0-9]+\\.?[0-9]*\\([eE][-+]?[0-9]+\\)?\\)[^-+/0-9a-zA-Z]*\\'" math-pd-str) | |
| 739 | (list 'date (math-read-number (math-match-substring math-pd-str 1)))) | |
| 136211a9 EZ |
740 | (let ((case-fold-search t) |
| 741 | (year nil) (month nil) (day nil) (weekday nil) | |
| 742 | (hour nil) (minute nil) (second nil) (bc-flag nil) | |
| 743 | (a nil) (b nil) (c nil) (bigyear nil) temp) | |
| 744 | ||
| 745 | ;; Extract the time, if any. | |
| 96cd475f JB |
746 | (if (or (string-match "\\([0-9][0-9]?\\):\\([0-9][0-9]?\\)\\(:\\([0-9][0-9]?\\(\\.[0-9]+\\)?\\)\\)? *\\([ap]\\>\\|[ap]m\\|[ap]\\. *m\\.\\|noon\\|n\\>\\|midnight\\|mid\\>\\|m\\>\\)?" math-pd-str) |
| 747 | (string-match "\\([0-9][0-9]?\\)\\(\\)\\(\\(\\(\\)\\)\\) *\\([ap]\\>\\|[ap]m\\|[ap]\\. *m\\.\\|noon\\|n\\>\\|midnight\\|mid\\>\\|m\\>\\)" math-pd-str)) | |
| 98223359 | 748 | (let ((ampm (math-match-substring math-pd-str 6))) |
| 5574e209 | 749 | (setq hour (string-to-number (math-match-substring math-pd-str 1)) |
| 98223359 JB |
750 | minute (math-match-substring math-pd-str 2) |
| 751 | second (math-match-substring math-pd-str 4) | |
| 752 | math-pd-str (concat (substring math-pd-str 0 (match-beginning 0)) | |
| 753 | (substring math-pd-str (match-end 0)))) | |
| 136211a9 EZ |
754 | (if (equal minute "") |
| 755 | (setq minute 0) | |
| 5574e209 | 756 | (setq minute (string-to-number minute))) |
| 136211a9 EZ |
757 | (if (equal second "") |
| 758 | (setq second 0) | |
| 759 | (setq second (math-read-number second))) | |
| 760 | (if (equal ampm "") | |
| 761 | (if (> hour 23) | |
| 762 | (throw 'syntax "Hour value out of range")) | |
| 763 | (setq ampm (upcase (aref ampm 0))) | |
| 764 | (if (memq ampm '(?N ?M)) | |
| 765 | (if (and (= hour 12) (= minute 0) (eq second 0)) | |
| 766 | (if (eq ampm ?M) (setq hour 0)) | |
| 767 | (throw 'syntax | |
| 768 | "Time must be 12:00:00 in this context")) | |
| 769 | (if (or (= hour 0) (> hour 12)) | |
| 770 | (throw 'syntax "Hour value out of range")) | |
| 771 | (if (eq (= ampm ?A) (= hour 12)) | |
| 772 | (setq hour (% (+ hour 12) 24))))))) | |
| 773 | ||
| 774 | ;; Rewrite xx-yy-zz to xx/yy/zz to avoid seeing "-" as a minus sign. | |
| 98223359 | 775 | (while (string-match "[0-9a-zA-Z]\\(-\\)[0-9a-zA-Z]" math-pd-str) |
| 136211a9 | 776 | (progn |
| 98223359 JB |
777 | (setq math-pd-str (copy-sequence math-pd-str)) |
| 778 | (aset math-pd-str (match-beginning 1) ?\/))) | |
| 136211a9 EZ |
779 | |
| 780 | ;; Extract obvious month or weekday names. | |
| 98223359 | 781 | (if (string-match "[a-zA-Z]" math-pd-str) |
| 136211a9 EZ |
782 | (progn |
| 783 | (setq month (math-parse-date-word math-long-month-names)) | |
| 784 | (setq weekday (math-parse-date-word math-long-weekday-names)) | |
| 785 | (or month (setq month | |
| 786 | (math-parse-date-word math-short-month-names))) | |
| 787 | (or weekday (math-parse-date-word math-short-weekday-names)) | |
| 788 | (or hour | |
| 789 | (if (setq temp (math-parse-date-word | |
| 790 | '( "noon" "midnight" "mid" ))) | |
| 791 | (setq hour (if (= temp 1) 12 0) minute 0 second 0))) | |
| 792 | (or (math-parse-date-word '( "ad" "a.d." )) | |
| 793 | (if (math-parse-date-word '( "bc" "b.c." )) | |
| 794 | (setq bc-flag t))) | |
| 98223359 | 795 | (if (string-match "[a-zA-Z]+" math-pd-str) |
| 136211a9 | 796 | (throw 'syntax (format "Bad word in date: \"%s\"" |
| 98223359 | 797 | (math-match-substring math-pd-str 0)))))) |
| 136211a9 EZ |
798 | |
| 799 | ;; If there is a huge number other than the year, ignore it. | |
| 98223359 JB |
800 | (while (and (string-match "[-+]?0*[1-9][0-9][0-9][0-9][0-9]+" math-pd-str) |
| 801 | (setq temp (concat (substring math-pd-str 0 (match-beginning 0)) | |
| 802 | (substring math-pd-str (match-end 0)))) | |
| d55ebb63 | 803 | (string-match |
| 98223359 JB |
804 | "[4-9][0-9]\\|[0-9][0-9][0-9]\\|[-+][0-9]+[^-]*\\'" temp)) |
| 805 | (setq math-pd-str temp)) | |
| 136211a9 EZ |
806 | |
| 807 | ;; If there is a number with a sign or a large number, it is a year. | |
| 98223359 JB |
808 | (if (or (string-match "\\([-+][0-9]+\\)[^-]*\\'" math-pd-str) |
| 809 | (string-match "\\(0*[1-9][0-9][0-9]+\\)" math-pd-str)) | |
| 810 | (setq year (math-match-substring math-pd-str 1) | |
| 811 | math-pd-str (concat (substring math-pd-str 0 (match-beginning 1)) | |
| 812 | (substring math-pd-str (match-end 1))) | |
| 136211a9 EZ |
813 | year (math-read-number year) |
| 814 | bigyear t)) | |
| 815 | ||
| 816 | ;; Collect remaining numbers. | |
| 817 | (setq temp 0) | |
| 98223359 | 818 | (while (string-match "[0-9]+" math-pd-str temp) |
| 136211a9 | 819 | (and c (throw 'syntax "Too many numbers in date")) |
| 5574e209 | 820 | (setq c (string-to-number (math-match-substring math-pd-str 0))) |
| 136211a9 EZ |
821 | (or b (setq b c c nil)) |
| 822 | (or a (setq a b b nil)) | |
| 823 | (setq temp (match-end 0))) | |
| 824 | ||
| 825 | ;; Check that we have the right amount of information. | |
| 826 | (setq temp (+ (if year 1 0) (if month 1 0) (if day 1 0) | |
| 827 | (if a 1 0) (if b 1 0) (if c 1 0))) | |
| 828 | (if (> temp 3) | |
| 829 | (throw 'syntax "Too many numbers in date") | |
| 830 | (if (or (< temp 2) (and year (= temp 2))) | |
| 831 | (throw 'syntax "Not enough numbers in date") | |
| 832 | (if (= temp 2) ; if year omitted, assume current year | |
| 833 | (setq year (math-this-year))))) | |
| 834 | ||
| 835 | ;; A large number must be a year. | |
| 836 | (or year | |
| 837 | (if (and a (or (> a 31) (< a 1))) | |
| 838 | (setq year a a b b c c nil) | |
| 839 | (if (and b (or (> b 31) (< b 1))) | |
| 840 | (setq year b b c c nil) | |
| 841 | (if (and c (or (> c 31) (< c 1))) | |
| 842 | (setq year c c nil))))) | |
| 843 | ||
| 844 | ;; A medium-large number must be a day. | |
| 845 | (if year | |
| 846 | (if (and a (> a 12)) | |
| 847 | (setq day a a b b c c nil) | |
| 848 | (if (and b (> b 12)) | |
| 849 | (setq day b b c c nil) | |
| 850 | (if (and c (> c 12)) | |
| 851 | (setq day c c nil))))) | |
| 852 | ||
| 853 | ;; We may know enough to sort it out now. | |
| 854 | (if (and year day) | |
| 855 | (or month (setq month a)) | |
| 856 | (if (and year month) | |
| 857 | (setq day a) | |
| 858 | ||
| 859 | ;; Interpret order of numbers as same as for display format. | |
| 860 | (setq temp calc-date-format) | |
| 861 | (while temp | |
| 862 | (cond ((not (symbolp (car temp)))) | |
| 863 | ((memq (car temp) '(Y YY BY YYY YYYY)) | |
| 864 | (or year (setq year a a b b c))) | |
| 865 | ((memq (car temp) '(M MM BM mmm Mmm Mmmm MMM MMMM)) | |
| 866 | (or month (setq month a a b b c))) | |
| 867 | ((memq (car temp) '(D DD BD)) | |
| 868 | (or day (setq day a a b b c)))) | |
| 869 | (setq temp (cdr temp))) | |
| 870 | ||
| 871 | ;; If display format was not complete, assume American style. | |
| 872 | (or month (setq month a a b b c)) | |
| 873 | (or day (setq day a a b b c)) | |
| 874 | (or year (setq year a a b b c)))) | |
| 875 | ||
| 876 | (if bc-flag | |
| 877 | (setq year (math-neg (math-abs year)))) | |
| 878 | ||
| 879 | (math-parse-date-validate year bigyear month day | |
| bf77c646 | 880 | hour minute second))))) |
| 136211a9 EZ |
881 | |
| 882 | (defun math-parse-date-validate (year bigyear month day hour minute second) | |
| 883 | (and (not bigyear) (natnump year) (< year 100) | |
| 884 | (setq year (+ year (if (< year 40) 2000 1900)))) | |
| 885 | (if (eq year 0) | |
| 886 | (throw 'syntax "Year value is out of range")) | |
| 887 | (if (or (< month 1) (> month 12)) | |
| 888 | (throw 'syntax "Month value is out of range")) | |
| 889 | (if (or (< day 1) (> day (math-days-in-month year month))) | |
| 890 | (throw 'syntax "Day value is out of range")) | |
| 891 | (and hour | |
| 892 | (progn | |
| 893 | (if (or (< hour 0) (> hour 23)) | |
| 894 | (throw 'syntax "Hour value is out of range")) | |
| 895 | (if (or (< minute 0) (> minute 59)) | |
| 896 | (throw 'syntax "Minute value is out of range")) | |
| 897 | (if (or (math-negp second) (not (Math-lessp second 60))) | |
| 898 | (throw 'syntax "Seconds value is out of range")))) | |
| 899 | (list 'date (math-dt-to-date (append (list year month day) | |
| bf77c646 | 900 | (and hour (list hour minute second)))))) |
| 136211a9 EZ |
901 | |
| 902 | (defun math-parse-date-word (names &optional front) | |
| 903 | (let ((n 1)) | |
| 904 | (while (and names (not (string-match (if (equal (car names) "Sep") | |
| 905 | "Sept?" | |
| 906 | (regexp-quote (car names))) | |
| 98223359 | 907 | math-pd-str))) |
| 136211a9 EZ |
908 | (setq names (cdr names) |
| 909 | n (1+ n))) | |
| 910 | (and names | |
| 911 | (or (not front) (= (match-beginning 0) 0)) | |
| 912 | (progn | |
| 98223359 | 913 | (setq math-pd-str (concat (substring math-pd-str 0 (match-beginning 0)) |
| 136211a9 | 914 | (if front "" " ") |
| 98223359 | 915 | (substring math-pd-str (match-end 0)))) |
| bf77c646 | 916 | n)))) |
| 136211a9 | 917 | |
| 98223359 | 918 | (defun math-parse-standard-date (math-pd-str with-time) |
| 136211a9 EZ |
919 | (let ((case-fold-search t) |
| 920 | (okay t) num | |
| 921 | (fmt calc-date-format) this next (gnext nil) | |
| 922 | (year nil) (month nil) (day nil) (bigyear nil) (yearday nil) | |
| 923 | (hour nil) (minute nil) (second nil) (bc-flag nil)) | |
| 924 | (while (and fmt okay) | |
| 925 | (setq this (car fmt) | |
| 926 | fmt (setq fmt (or (cdr fmt) | |
| 927 | (prog1 | |
| 928 | gnext | |
| 929 | (setq gnext nil)))) | |
| 930 | next (car fmt)) | |
| 931 | (if (consp next) (setq next (car next))) | |
| 932 | (or (cond ((listp this) | |
| 933 | (or (not with-time) | |
| 934 | (not this) | |
| 935 | (setq gnext fmt | |
| 936 | fmt this))) | |
| 937 | ((stringp this) | |
| 98223359 | 938 | (if (and (<= (length this) (length math-pd-str)) |
| 136211a9 | 939 | (equal this |
| 98223359 JB |
940 | (substring math-pd-str 0 (length this)))) |
| 941 | (setq math-pd-str (substring math-pd-str (length this))))) | |
| 136211a9 EZ |
942 | ((eq this 'X) |
| 943 | t) | |
| 944 | ((memq this '(n N j J)) | |
| 98223359 JB |
945 | (and (string-match "\\`[-+]?[0-9.]+\\([eE][-+]?[0-9]+\\)?" math-pd-str) |
| 946 | (setq num (math-match-substring math-pd-str 0) | |
| 947 | math-pd-str (substring math-pd-str (match-end 0)) | |
| 136211a9 EZ |
948 | num (math-date-to-dt (math-read-number num)) |
| 949 | num (math-sub num | |
| 950 | (if (memq this '(n N)) | |
| 951 | 0 | |
| 952 | (if (or (eq this 'j) | |
| 953 | (math-integerp num)) | |
| 98e9ffe3 JB |
954 | math-julian-date-beginning-int |
| 955 | math-julian-date-beginning))) | |
| 136211a9 EZ |
956 | hour (or (nth 3 num) hour) |
| 957 | minute (or (nth 4 num) minute) | |
| 958 | second (or (nth 5 num) second) | |
| 959 | year (car num) | |
| 960 | month (nth 1 num) | |
| 961 | day (nth 2 num)))) | |
| 962 | ((eq this 'U) | |
| 98223359 JB |
963 | (and (string-match "\\`[-+]?[0-9]+" math-pd-str) |
| 964 | (setq num (math-match-substring math-pd-str 0) | |
| 965 | math-pd-str (substring math-pd-str (match-end 0)) | |
| 136211a9 EZ |
966 | num (math-date-to-dt |
| 967 | (math-add 719164 | |
| 968 | (math-div (math-read-number num) | |
| 969 | '(float 864 2)))) | |
| 970 | hour (nth 3 num) | |
| 971 | minute (nth 4 num) | |
| 972 | second (nth 5 num) | |
| 973 | year (car num) | |
| 974 | month (nth 1 num) | |
| 975 | day (nth 2 num)))) | |
| 976 | ((memq this '(mmm Mmm MMM)) | |
| 977 | (setq month (math-parse-date-word math-short-month-names t))) | |
| 978 | ((memq this '(Mmmm MMMM)) | |
| 979 | (setq month (math-parse-date-word math-long-month-names t))) | |
| 980 | ((memq this '(www Www WWW)) | |
| 981 | (math-parse-date-word math-short-weekday-names t)) | |
| 982 | ((memq this '(Wwww WWWW)) | |
| 983 | (math-parse-date-word math-long-weekday-names t)) | |
| 984 | ((memq this '(p P)) | |
| 98223359 | 985 | (if (string-match "\\`a" math-pd-str) |
| 136211a9 | 986 | (setq hour (if (= hour 12) 0 hour) |
| 98223359 JB |
987 | math-pd-str (substring math-pd-str 1)) |
| 988 | (if (string-match "\\`p" math-pd-str) | |
| 136211a9 | 989 | (setq hour (if (= hour 12) 12 (% (+ hour 12) 24)) |
| 98223359 | 990 | math-pd-str (substring math-pd-str 1))))) |
| 136211a9 | 991 | ((memq this '(pp PP pppp PPPP)) |
| 98223359 | 992 | (if (string-match "\\`am\\|a\\.m\\." math-pd-str) |
| 136211a9 | 993 | (setq hour (if (= hour 12) 0 hour) |
| 98223359 JB |
994 | math-pd-str (substring math-pd-str (match-end 0))) |
| 995 | (if (string-match "\\`pm\\|p\\.m\\." math-pd-str) | |
| 136211a9 | 996 | (setq hour (if (= hour 12) 12 (% (+ hour 12) 24)) |
| 98223359 | 997 | math-pd-str (substring math-pd-str (match-end 0)))))) |
| 136211a9 EZ |
998 | ((memq this '(Y YY BY YYY YYYY)) |
| 999 | (and (if (memq next '(MM DD ddd hh HH mm ss SS)) | |
| 1000 | (if (memq this '(Y YY BYY)) | |
| 98223359 JB |
1001 | (string-match "\\` *[0-9][0-9]" math-pd-str) |
| 1002 | (string-match "\\`[0-9][0-9][0-9][0-9]" math-pd-str)) | |
| 1003 | (string-match "\\`[-+]?[0-9]+" math-pd-str)) | |
| 1004 | (setq year (math-match-substring math-pd-str 0) | |
| 136211a9 | 1005 | bigyear (or (eq this 'YYY) |
| 98223359 JB |
1006 | (memq (aref math-pd-str 0) '(?\+ ?\-))) |
| 1007 | math-pd-str (substring math-pd-str (match-end 0)) | |
| 136211a9 EZ |
1008 | year (math-read-number year)))) |
| 1009 | ((eq this 'b) | |
| 1010 | t) | |
| 1011 | ((memq this '(aa AA aaaa AAAA)) | |
| 98223359 JB |
1012 | (if (string-match "\\` *\\(ad\\|a\\.d\\.\\)" math-pd-str) |
| 1013 | (setq math-pd-str (substring math-pd-str (match-end 0))))) | |
| 136211a9 | 1014 | ((memq this '(aaa AAA)) |
| 98223359 JB |
1015 | (if (string-match "\\` *ad *" math-pd-str) |
| 1016 | (setq math-pd-str (substring math-pd-str (match-end 0))))) | |
| 136211a9 | 1017 | ((memq this '(bb BB bbb BBB bbbb BBBB)) |
| 98223359 JB |
1018 | (if (string-match "\\` *\\(bc\\|b\\.c\\.\\)" math-pd-str) |
| 1019 | (setq math-pd-str (substring math-pd-str (match-end 0)) | |
| 136211a9 EZ |
1020 | bc-flag t))) |
| 1021 | ((memq this '(s ss bs SS BS)) | |
| 1022 | (and (if (memq next '(YY YYYY MM DD hh HH mm)) | |
| 98223359 JB |
1023 | (string-match "\\` *[0-9][0-9]\\(\\.[0-9]+\\)?" math-pd-str) |
| 1024 | (string-match "\\` *[0-9][0-9]?\\(\\.[0-9]+\\)?" math-pd-str)) | |
| 1025 | (setq second (math-match-substring math-pd-str 0) | |
| 1026 | math-pd-str (substring math-pd-str (match-end 0)) | |
| 136211a9 EZ |
1027 | second (math-read-number second)))) |
| 1028 | ((eq this 'C) | |
| 98223359 JB |
1029 | (if (string-match "\\`:[0-9][0-9]" math-pd-str) |
| 1030 | (setq math-pd-str (substring math-pd-str 1)) | |
| 136211a9 EZ |
1031 | t)) |
| 1032 | ((or (not (if (and (memq this '(ddd MM DD hh HH mm)) | |
| 1033 | (memq next '(YY YYYY MM DD ddd | |
| 1034 | hh HH mm ss SS))) | |
| 1035 | (if (eq this 'ddd) | |
| 98223359 JB |
1036 | (string-match "\\` *[0-9][0-9][0-9]" math-pd-str) |
| 1037 | (string-match "\\` *[0-9][0-9]" math-pd-str)) | |
| 1038 | (string-match "\\` *[0-9]+" math-pd-str))) | |
| 5574e209 | 1039 | (and (setq num (string-to-number |
| 98223359 JB |
1040 | (math-match-substring math-pd-str 0)) |
| 1041 | math-pd-str (substring math-pd-str (match-end 0))) | |
| 136211a9 EZ |
1042 | nil)) |
| 1043 | nil) | |
| 1044 | ((eq this 'W) | |
| 1045 | (and (>= num 0) (< num 7))) | |
| 1046 | ((memq this '(d ddd bdd)) | |
| 1047 | (setq yearday num)) | |
| 1048 | ((memq this '(M MM BM)) | |
| 1049 | (setq month num)) | |
| 1050 | ((memq this '(D DD BD)) | |
| 1051 | (setq day num)) | |
| 1052 | ((memq this '(h hh bh H HH BH)) | |
| 1053 | (setq hour num)) | |
| 1054 | ((memq this '(m mm bm)) | |
| 1055 | (setq minute num))) | |
| 1056 | (setq okay nil))) | |
| 1057 | (if yearday | |
| 1058 | (if (and month day) | |
| 1059 | (setq yearday nil) | |
| 1060 | (setq month 1 day 1))) | |
| 98223359 | 1061 | (if (and okay (equal math-pd-str "")) |
| 136211a9 EZ |
1062 | (and month day (or (not (or hour minute second)) |
| 1063 | (and hour minute)) | |
| 1064 | (progn | |
| 1065 | (or year (setq year (math-this-year))) | |
| 1066 | (or second (setq second 0)) | |
| 1067 | (if bc-flag | |
| 1068 | (setq year (math-neg (math-abs year)))) | |
| 1069 | (setq day (math-parse-date-validate year bigyear month day | |
| 1070 | hour minute second)) | |
| 1071 | (if yearday | |
| 1072 | (setq day (math-add day (1- yearday)))) | |
| bf77c646 | 1073 | day))))) |
| 136211a9 EZ |
1074 | |
| 1075 | ||
| 1076 | (defun calcFunc-now (&optional zone) | |
| 1077 | (let ((date (let ((calc-date-format nil)) | |
| 1078 | (math-parse-date (current-time-string))))) | |
| 1079 | (if (consp date) | |
| 1080 | (if zone | |
| 1081 | (math-add date (math-div (math-sub (calcFunc-tzone nil date) | |
| 1082 | (calcFunc-tzone zone date)) | |
| 1083 | '(float 864 2))) | |
| 1084 | date) | |
| 1085 | (calc-record-why "*Unable to interpret current date from system") | |
| bf77c646 | 1086 | (append (list 'calcFunc-now) (and zone (list zone)))))) |
| 136211a9 EZ |
1087 | |
| 1088 | (defun calcFunc-year (date) | |
| bf77c646 | 1089 | (car (math-date-to-dt date))) |
| 136211a9 EZ |
1090 | |
| 1091 | (defun calcFunc-month (date) | |
| bf77c646 | 1092 | (nth 1 (math-date-to-dt date))) |
| 136211a9 EZ |
1093 | |
| 1094 | (defun calcFunc-day (date) | |
| bf77c646 | 1095 | (nth 2 (math-date-to-dt date))) |
| 136211a9 EZ |
1096 | |
| 1097 | (defun calcFunc-weekday (date) | |
| 1098 | (if (eq (car-safe date) 'date) | |
| 1099 | (setq date (nth 1 date))) | |
| 1100 | (or (math-realp date) | |
| 1101 | (math-reject-arg date 'datep)) | |
| bf77c646 | 1102 | (math-mod (math-add (math-floor date) 6) 7)) |
| 136211a9 EZ |
1103 | |
| 1104 | (defun calcFunc-yearday (date) | |
| 1105 | (let ((dt (math-date-to-dt date))) | |
| bf77c646 | 1106 | (math-day-number (car dt) (nth 1 dt) (nth 2 dt)))) |
| 136211a9 EZ |
1107 | |
| 1108 | (defun calcFunc-hour (date) | |
| 1109 | (if (eq (car-safe date) 'hms) | |
| 1110 | (nth 1 date) | |
| bf77c646 | 1111 | (or (nth 3 (math-date-to-dt date)) 0))) |
| 136211a9 EZ |
1112 | |
| 1113 | (defun calcFunc-minute (date) | |
| 1114 | (if (eq (car-safe date) 'hms) | |
| 1115 | (nth 2 date) | |
| bf77c646 | 1116 | (or (nth 4 (math-date-to-dt date)) 0))) |
| 136211a9 EZ |
1117 | |
| 1118 | (defun calcFunc-second (date) | |
| 1119 | (if (eq (car-safe date) 'hms) | |
| 1120 | (nth 3 date) | |
| bf77c646 | 1121 | (or (nth 5 (math-date-to-dt date)) 0))) |
| 136211a9 EZ |
1122 | |
| 1123 | (defun calcFunc-time (date) | |
| 1124 | (let ((dt (math-date-to-dt date))) | |
| 1125 | (if (nth 3 dt) | |
| 1126 | (cons 'hms (nthcdr 3 dt)) | |
| bf77c646 | 1127 | (list 'hms 0 0 0)))) |
| 136211a9 EZ |
1128 | |
| 1129 | (defun calcFunc-date (date &optional month day hour minute second) | |
| 1130 | (and (math-messy-integerp month) (setq month (math-trunc month))) | |
| 1131 | (and month (not (integerp month)) (math-reject-arg month 'fixnump)) | |
| 1132 | (and (math-messy-integerp day) (setq day (math-trunc day))) | |
| 1133 | (and day (not (integerp day)) (math-reject-arg day 'fixnump)) | |
| 1134 | (if (and (eq (car-safe hour) 'hms) (not minute)) | |
| 1135 | (setq second (nth 3 hour) | |
| 1136 | minute (nth 2 hour) | |
| 1137 | hour (nth 1 hour))) | |
| 1138 | (and (math-messy-integerp hour) (setq hour (math-trunc hour))) | |
| 1139 | (and hour (not (integerp hour)) (math-reject-arg hour 'fixnump)) | |
| 1140 | (and (math-messy-integerp minute) (setq minute (math-trunc minute))) | |
| 1141 | (and minute (not (integerp minute)) (math-reject-arg minute 'fixnump)) | |
| 1142 | (and (math-messy-integerp second) (setq second (math-trunc second))) | |
| 1143 | (and second (not (math-realp second)) (math-reject-arg second 'realp)) | |
| 1144 | (if month | |
| 1145 | (progn | |
| 1146 | (and (math-messy-integerp date) (setq date (math-trunc date))) | |
| 1147 | (and date (not (math-integerp date)) (math-reject-arg date 'integerp)) | |
| 1148 | (if day | |
| 1149 | (if hour | |
| 1150 | (list 'date (math-dt-to-date (list date month day hour | |
| 1151 | (or minute 0) | |
| 1152 | (or second 0)))) | |
| 1153 | (list 'date (math-dt-to-date (list date month day)))) | |
| 1154 | (list 'date (math-dt-to-date (list (math-this-year) date month))))) | |
| 1155 | (if (math-realp date) | |
| 1156 | (list 'date date) | |
| 1157 | (if (eq (car date) 'date) | |
| 1158 | (nth 1 date) | |
| bf77c646 | 1159 | (math-reject-arg date 'datep))))) |
| 136211a9 EZ |
1160 | |
| 1161 | (defun calcFunc-julian (date &optional zone) | |
| 1162 | (if (math-realp date) | |
| 1163 | (list 'date (if (math-integerp date) | |
| 98e9ffe3 JB |
1164 | (math-sub date math-julian-date-beginning-int) |
| 1165 | (setq date (math-sub date math-julian-date-beginning)) | |
| 136211a9 EZ |
1166 | (math-sub date (math-div (calcFunc-tzone zone date) |
| 1167 | '(float 864 2))))) | |
| 1168 | (if (eq (car date) 'date) | |
| 1169 | (math-add (nth 1 date) (if (math-integerp (nth 1 date)) | |
| 98e9ffe3 JB |
1170 | math-julian-date-beginning-int |
| 1171 | (math-add math-julian-date-beginning | |
| 136211a9 EZ |
1172 | (math-div (calcFunc-tzone zone date) |
| 1173 | '(float 864 2))))) | |
| bf77c646 | 1174 | (math-reject-arg date 'datep)))) |
| 136211a9 EZ |
1175 | |
| 1176 | (defun calcFunc-unixtime (date &optional zone) | |
| 1177 | (if (math-realp date) | |
| 1178 | (progn | |
| 1179 | (setq date (math-add 719164 (math-div date '(float 864 2)))) | |
| 1180 | (list 'date (math-sub date (math-div (calcFunc-tzone zone date) | |
| 1181 | '(float 864 2))))) | |
| 1182 | (if (eq (car date) 'date) | |
| 1183 | (math-add (nth 1 (math-date-parts (nth 1 date) 719164)) | |
| 1184 | (calcFunc-tzone zone date)) | |
| bf77c646 | 1185 | (math-reject-arg date 'datep)))) |
| 136211a9 | 1186 | |
| 98223359 JB |
1187 | |
| 1188 | ;;; Note: Longer names must appear before shorter names which are | |
| 1189 | ;;; substrings of them. | |
| 1190 | (defvar math-tzone-names | |
| d55ebb63 | 1191 | '(( "UTC" 0 0) |
| 98223359 JB |
1192 | ( "MEGT" -1 "MET" "METDST" ) ; Middle Europe |
| 1193 | ( "METDST" -1 -1 ) ( "MET" -1 0 ) | |
| 1194 | ( "MEGZ" -1 "MEZ" "MESZ" ) ( "MEZ" -1 0 ) ( "MESZ" -1 -1 ) | |
| 1195 | ( "WEGT" 0 "WET" "WETDST" ) ; Western Europe | |
| 1196 | ( "WETDST" 0 -1 ) ( "WET" 0 0 ) | |
| 1197 | ( "BGT" 0 "GMT" "BST" ) ( "GMT" 0 0 ) ( "BST" 0 -1 ) ; Britain | |
| 1198 | ( "NGT" (float 35 -1) "NST" "NDT" ) ; Newfoundland | |
| 1199 | ( "NST" (float 35 -1) 0 ) ( "NDT" (float 35 -1) -1 ) | |
| 1200 | ( "AGT" 4 "AST" "ADT" ) ( "AST" 4 0 ) ( "ADT" 4 -1 ) ; Atlantic | |
| 1201 | ( "EGT" 5 "EST" "EDT" ) ( "EST" 5 0 ) ( "EDT" 5 -1 ) ; Eastern | |
| 1202 | ( "CGT" 6 "CST" "CDT" ) ( "CST" 6 0 ) ( "CDT" 6 -1 ) ; Central | |
| 1203 | ( "MGT" 7 "MST" "MDT" ) ( "MST" 7 0 ) ( "MDT" 7 -1 ) ; Mountain | |
| 1204 | ( "PGT" 8 "PST" "PDT" ) ( "PST" 8 0 ) ( "PDT" 8 -1 ) ; Pacific | |
| 1205 | ( "YGT" 9 "YST" "YDT" ) ( "YST" 9 0 ) ( "YDT" 9 -1 ) ; Yukon | |
| 1206 | ) | |
| 1207 | "No doc yet. See calc manual for now. ") | |
| 1208 | ||
| 94a95495 JB |
1209 | (defvar var-TimeZone nil) |
| 1210 | ||
| 1211 | ;; From cal-dst | |
| 1212 | (defvar calendar-current-time-zone-cache) | |
| 1213 | ||
| 1214 | (defvar math-calendar-tzinfo | |
| 1215 | nil | |
| 1216 | "Information about the timezone, retrieved from the calendar.") | |
| 1217 | ||
| 1218 | (defun math-get-calendar-tzinfo () | |
| 1219 | "Get information about the timezone from the calendar. | |
| 1220 | The result should be a list of two items about the current time zone: | |
| 1221 | first, the number of seconds difference from GMT | |
| 1222 | second, the number of seconds offset for daylight savings." | |
| 1223 | (if math-calendar-tzinfo | |
| 1224 | math-calendar-tzinfo | |
| 1225 | (require 'cal-dst) | |
| 1226 | (let ((tzinfo (progn | |
| 1227 | (calendar-current-time-zone) | |
| 1228 | calendar-current-time-zone-cache))) | |
| 1229 | (setq math-calendar-tzinfo | |
| 1230 | (list (* 60 (abs (nth 0 tzinfo))) | |
| 1231 | (* 60 (nth 1 tzinfo))))))) | |
| 98223359 | 1232 | |
| 136211a9 EZ |
1233 | (defun calcFunc-tzone (&optional zone date) |
| 1234 | (if zone | |
| 1235 | (cond ((math-realp zone) | |
| 1236 | (math-round (math-mul zone 3600))) | |
| 1237 | ((eq (car zone) 'hms) | |
| 1238 | (math-round (math-mul (math-from-hms zone 'deg) 3600))) | |
| 1239 | ((eq (car zone) '+) | |
| 1240 | (math-add (calcFunc-tzone (nth 1 zone) date) | |
| 1241 | (calcFunc-tzone (nth 2 zone) date))) | |
| 1242 | ((eq (car zone) '-) | |
| 1243 | (math-sub (calcFunc-tzone (nth 1 zone) date) | |
| 1244 | (calcFunc-tzone (nth 2 zone) date))) | |
| 1245 | ((eq (car zone) 'var) | |
| 1246 | (let ((name (upcase (symbol-name (nth 1 zone)))) | |
| 1247 | found) | |
| 1248 | (if (setq found (assoc name math-tzone-names)) | |
| 1249 | (calcFunc-tzone (math-add (nth 1 found) | |
| 1250 | (if (integerp (nth 2 found)) | |
| 1251 | (nth 2 found) | |
| 1252 | (or | |
| 1253 | (math-daylight-savings-adjust | |
| 1254 | date (car found)) | |
| 1255 | 0))) | |
| 1256 | date) | |
| 1257 | (if (equal name "LOCAL") | |
| 1258 | (calcFunc-tzone nil date) | |
| 1259 | (math-reject-arg zone "*Unrecognized time zone name"))))) | |
| 1260 | (t (math-reject-arg zone "*Expected a time zone"))) | |
| 1261 | (if (calc-var-value 'var-TimeZone) | |
| 1262 | (calcFunc-tzone (calc-var-value 'var-TimeZone) date) | |
| 94a95495 JB |
1263 | (let ((tzinfo (math-get-calendar-tzinfo))) |
| 1264 | (+ (nth 0 tzinfo) | |
| 1265 | (* (math-cal-daylight-savings-adjust date) (nth 1 tzinfo))))))) | |
| 136211a9 | 1266 | |
| 98223359 | 1267 | (defvar math-daylight-savings-hook 'math-std-daylight-savings) |
| 136211a9 EZ |
1268 | |
| 1269 | (defun math-daylight-savings-adjust (date zone &optional dt) | |
| 1270 | (or date (setq date (nth 1 (calcFunc-now)))) | |
| 1271 | (let (bump) | |
| 1272 | (if (eq (car-safe date) 'date) | |
| 1273 | (setq bump 0 | |
| 1274 | date (nth 1 date)) | |
| 1275 | (if (and date (math-realp date)) | |
| 1276 | (let ((zadj (assoc zone math-tzone-names))) | |
| 1277 | (if zadj (setq bump -1 | |
| 1278 | date (math-sub date (math-div (nth 1 zadj) | |
| 1279 | '(float 24 0)))))) | |
| 1280 | (math-reject-arg date 'datep))) | |
| 1281 | (setq date (math-float date)) | |
| 1282 | (or dt (setq dt (math-date-to-dt date))) | |
| 1283 | (and math-daylight-savings-hook | |
| bf77c646 | 1284 | (funcall math-daylight-savings-hook date dt zone bump)))) |
| 136211a9 | 1285 | |
| 94a95495 JB |
1286 | ;;; Based on part of dst-adjust-time in cal-dst.el |
| 1287 | ;;; For calcFunc-dst, when zone=nil | |
| 1288 | (defun math-cal-daylight-savings-adjust (date) | |
| 1289 | "Return -1 if DATE is using daylight saving, 0 otherwise." | |
| 1290 | (require 'cal-dst) | |
| 1291 | (unless date (setq date (calcFunc-now))) | |
| 1292 | (let* ((dt (math-date-to-dt date)) | |
| 1293 | (time (cond | |
| 1294 | ((nth 3 dt) | |
| 1295 | (nth 3 dt)) | |
| 1296 | ((nth 4 dt) | |
| 1297 | (+ (nth 3 dt) (/ (nth 4 dt) 60.0))) | |
| 1298 | (t | |
| 1299 | 0))) | |
| 1300 | (rounded-abs-date | |
| 1301 | (+ | |
| 1302 | (calendar-absolute-from-gregorian | |
| 1303 | (list (nth 1 dt) (nth 2 dt) (nth 0 dt))) | |
| 1304 | (/ (round (* 60 time)) 60.0 24.0)))) | |
| 1305 | (if (dst-in-effect rounded-abs-date) | |
| 1306 | -1 | |
| 1307 | 0))) | |
| 1308 | ||
| 136211a9 EZ |
1309 | (defun calcFunc-dsadj (date &optional zone) |
| 1310 | (if zone | |
| 1311 | (or (eq (car-safe zone) 'var) | |
| 1312 | (math-reject-arg zone "*Time zone variable expected")) | |
| 94a95495 JB |
1313 | (setq zone (calc-var-value 'var-TimeZone))) |
| 1314 | (if zone | |
| 1315 | (progn | |
| 1316 | (setq zone (and (eq (car-safe zone) 'var) | |
| 1317 | (upcase (symbol-name (nth 1 zone))))) | |
| 1318 | (let ((zadj (assoc zone math-tzone-names))) | |
| 1319 | (or zadj (math-reject-arg zone "*Unrecognized time zone name")) | |
| 1320 | (if (integerp (nth 2 zadj)) | |
| 1321 | (nth 2 zadj) | |
| 1322 | (math-daylight-savings-adjust date zone)))) | |
| 1323 | (math-cal-daylight-savings-adjust date))) | |
| 1324 | ||
| 1325 | ;; (defun calcFunc-dsadj (date &optional zone) | |
| 1326 | ;; (if zone | |
| 1327 | ;; (or (eq (car-safe zone) 'var) | |
| 1328 | ;; (math-reject-arg zone "*Time zone variable expected")) | |
| 1329 | ;; (setq zone (or (calc-var-value 'var-TimeZone) | |
| 1330 | ;; (progn | |
| 1331 | ;; (calcFunc-tzone) | |
| 1332 | ;; (calc-var-value 'var-TimeZone))))) | |
| 1333 | ;; (setq zone (and (eq (car-safe zone) 'var) | |
| 1334 | ;; (upcase (symbol-name (nth 1 zone))))) | |
| 1335 | ;; (let ((zadj (assoc zone math-tzone-names))) | |
| 1336 | ;; (or zadj (math-reject-arg zone "*Unrecognized time zone name")) | |
| 1337 | ;; (if (integerp (nth 2 zadj)) | |
| 1338 | ;; (nth 2 zadj) | |
| 1339 | ;; (math-daylight-savings-adjust date zone)))) | |
| 136211a9 EZ |
1340 | |
| 1341 | (defun calcFunc-tzconv (date z1 z2) | |
| 1342 | (if (math-realp date) | |
| 1343 | (nth 1 (calcFunc-tzconv (list 'date date) z1 z2)) | |
| bf77c646 | 1344 | (calcFunc-unixtime (calcFunc-unixtime date z1) z2))) |
| 136211a9 | 1345 | |
| 136211a9 | 1346 | (defun math-std-daylight-savings (date dt zone bump) |
| 16e5f961 | 1347 | "Standard North American daylight saving algorithm. |
| 96cd475f | 1348 | Before 2007, this uses `math-std-daylight-savings-old', where |
| d55ebb63 | 1349 | daylight saving began on the first Sunday of April at 2 a.m., |
| 96cd475f JB |
1350 | and ended on the last Sunday of October at 2 a.m. |
| 1351 | As of 2007, this uses `math-std-daylight-savings-new', where | |
| 1352 | daylight saving begins on the second Sunday of March at 2 a.m., | |
| 1353 | and ends on the first Sunday of November at 2 a.m." | |
| 1354 | (if (< (car dt) 2007) | |
| 1355 | (math-std-daylight-savings-old date dt zone bump) | |
| 1356 | (math-std-daylight-savings-new date dt zone bump))) | |
| 1357 | ||
| 1358 | (defun math-std-daylight-savings-new (date dt zone bump) | |
| 1359 | "Standard North American daylight saving algorithm as of 2007. | |
| 1360 | This implements the rules for the U.S. and Canada. | |
| 16e5f961 CY |
1361 | Daylight saving begins on the second Sunday of March at 2 a.m., |
| 1362 | and ends on the first Sunday of November at 2 a.m." | |
| 1363 | (cond ((< (nth 1 dt) 3) 0) | |
| 1364 | ((= (nth 1 dt) 3) | |
| 1365 | (let ((sunday (math-prev-weekday-in-month date dt 14 0))) | |
| 136211a9 EZ |
1366 | (cond ((< (nth 2 dt) sunday) 0) |
| 1367 | ((= (nth 2 dt) sunday) | |
| 1368 | (if (>= (nth 3 dt) (+ 3 bump)) -1 0)) | |
| 1369 | (t -1)))) | |
| 16e5f961 CY |
1370 | ((< (nth 1 dt) 11) -1) |
| 1371 | ((= (nth 1 dt) 11) | |
| 1372 | (let ((sunday (math-prev-weekday-in-month date dt 7 0))) | |
| 136211a9 EZ |
1373 | (cond ((< (nth 2 dt) sunday) -1) |
| 1374 | ((= (nth 2 dt) sunday) | |
| 1375 | (if (>= (nth 3 dt) (+ 2 bump)) 0 -1)) | |
| 1376 | (t 0)))) | |
| bf77c646 | 1377 | (t 0))) |
| 136211a9 | 1378 | |
| 96cd475f | 1379 | (defun math-std-daylight-savings-old (date dt zone bump) |
| d55ebb63 | 1380 | "Standard North American daylight saving algorithm before 2007. |
| 96cd475f | 1381 | This implements the rules for the U.S. and Canada. |
| d55ebb63 | 1382 | Daylight saving begins on the first Sunday of April at 2 a.m., |
| 96cd475f JB |
1383 | and ends on the last Sunday of October at 2 a.m." |
| 1384 | (cond ((< (nth 1 dt) 4) 0) | |
| 1385 | ((= (nth 1 dt) 4) | |
| 1386 | (let ((sunday (math-prev-weekday-in-month date dt 7 0))) | |
| 1387 | (cond ((< (nth 2 dt) sunday) 0) | |
| 1388 | ((= (nth 2 dt) sunday) | |
| 1389 | (if (>= (nth 3 dt) (+ 3 bump)) -1 0)) | |
| 1390 | (t -1)))) | |
| 1391 | ((< (nth 1 dt) 10) -1) | |
| 1392 | ((= (nth 1 dt) 10) | |
| 1393 | (let ((sunday (math-prev-weekday-in-month date dt 31 0))) | |
| 1394 | (cond ((< (nth 2 dt) sunday) -1) | |
| 1395 | ((= (nth 2 dt) sunday) | |
| 1396 | (if (>= (nth 3 dt) (+ 2 bump)) 0 -1)) | |
| 1397 | (t 0)))) | |
| 1398 | (t 0))) | |
| 1399 | ||
| 136211a9 EZ |
1400 | ;;; Compute the day (1-31) of the WDAY (0-6) on or preceding the given |
| 1401 | ;;; day of the given month. | |
| 1402 | (defun math-prev-weekday-in-month (date dt day wday) | |
| 1403 | (or day (setq day (nth 2 dt))) | |
| 1404 | (if (> day (math-days-in-month (car dt) (nth 1 dt))) | |
| 1405 | (setq day (math-days-in-month (car dt) (nth 1 dt)))) | |
| 1406 | (let ((zeroth (math-sub (math-floor date) (nth 2 dt)))) | |
| bf77c646 | 1407 | (math-sub (nth 1 (calcFunc-newweek (math-add zeroth day))) zeroth))) |
| 136211a9 EZ |
1408 | |
| 1409 | (defun calcFunc-pwday (date &optional day weekday) | |
| 1410 | (if (eq (car-safe date) 'date) | |
| 1411 | (setq date (nth 1 date))) | |
| 1412 | (or (math-realp date) | |
| 1413 | (math-reject-arg date 'datep)) | |
| 1414 | (if (math-messy-integerp day) (setq day (math-trunc day))) | |
| 1415 | (or (integerp day) (math-reject-arg day 'fixnump)) | |
| 1416 | (if (= day 0) (setq day 31)) | |
| 1417 | (and (or (< day 7) (> day 31)) (math-reject-arg day 'range)) | |
| bf77c646 | 1418 | (math-prev-weekday-in-month date (math-date-to-dt date) day (or weekday 0))) |
| 136211a9 EZ |
1419 | |
| 1420 | ||
| 1421 | (defun calcFunc-newweek (date &optional weekday) | |
| 1422 | (if (eq (car-safe date) 'date) | |
| 1423 | (setq date (nth 1 date))) | |
| 1424 | (or (math-realp date) | |
| 1425 | (math-reject-arg date 'datep)) | |
| 1426 | (or weekday (setq weekday 0)) | |
| 1427 | (and (math-messy-integerp weekday) (setq weekday (math-trunc weekday))) | |
| 1428 | (or (integerp weekday) (math-reject-arg weekday 'fixnump)) | |
| 1429 | (and (or (< weekday 0) (> weekday 6)) (math-reject-arg weekday 'range)) | |
| 1430 | (setq date (math-floor date)) | |
| bf77c646 | 1431 | (list 'date (math-sub date (calcFunc-weekday (math-sub date weekday))))) |
| 136211a9 EZ |
1432 | |
| 1433 | (defun calcFunc-newmonth (date &optional day) | |
| 1434 | (or day (setq day 1)) | |
| 1435 | (and (math-messy-integerp day) (setq day (math-trunc day))) | |
| 1436 | (or (integerp day) (math-reject-arg day 'fixnump)) | |
| 1437 | (and (or (< day 0) (> day 31)) (math-reject-arg day 'range)) | |
| 1438 | (let ((dt (math-date-to-dt date))) | |
| 1439 | (if (or (= day 0) (> day (math-days-in-month (car dt) (nth 1 dt)))) | |
| 1440 | (setq day (math-days-in-month (car dt) (nth 1 dt)))) | |
| 1441 | (and (eq (car dt) 1752) (= (nth 1 dt) 9) | |
| 1442 | (if (>= day 14) (setq day (- day 11)))) | |
| 1443 | (list 'date (math-add (math-dt-to-date (list (car dt) (nth 1 dt) 1)) | |
| bf77c646 | 1444 | (1- day))))) |
| 136211a9 EZ |
1445 | |
| 1446 | (defun calcFunc-newyear (date &optional day) | |
| 1447 | (or day (setq day 1)) | |
| 1448 | (and (math-messy-integerp day) (setq day (math-trunc day))) | |
| 1449 | (or (integerp day) (math-reject-arg day 'fixnump)) | |
| 1450 | (let ((dt (math-date-to-dt date))) | |
| 1451 | (if (and (>= day 0) (<= day 366)) | |
| 1452 | (let ((max (if (eq (car dt) 1752) 355 | |
| 1453 | (if (math-leap-year-p (car dt)) 366 365)))) | |
| 1454 | (if (or (= day 0) (> day max)) (setq day max)) | |
| 1455 | (list 'date (math-add (math-dt-to-date (list (car dt) 1 1)) | |
| 1456 | (1- day)))) | |
| 1457 | (if (and (>= day -12) (<= day -1)) | |
| 1458 | (list 'date (math-dt-to-date (list (car dt) (- day) 1))) | |
| bf77c646 | 1459 | (math-reject-arg day 'range))))) |
| 136211a9 EZ |
1460 | |
| 1461 | (defun calcFunc-incmonth (date &optional step) | |
| 1462 | (or step (setq step 1)) | |
| 1463 | (and (math-messy-integerp step) (setq step (math-trunc step))) | |
| 1464 | (or (math-integerp step) (math-reject-arg step 'integerp)) | |
| 1465 | (let* ((dt (math-date-to-dt date)) | |
| 1466 | (year (car dt)) | |
| 1467 | (month (math-add (1- (nth 1 dt)) step)) | |
| 1468 | (extra (calcFunc-idiv month 12)) | |
| 1469 | (day (nth 2 dt))) | |
| 1470 | (setq month (1+ (math-sub month (math-mul extra 12))) | |
| 1471 | year (math-add year extra) | |
| 1472 | day (min day (math-days-in-month year month))) | |
| 1473 | (and (math-posp (car dt)) (not (math-posp year)) | |
| 1474 | (setq year (math-sub year 1))) ; did we go past the year zero? | |
| 1475 | (and (math-negp (car dt)) (not (math-negp year)) | |
| 1476 | (setq year (math-add year 1))) | |
| 1477 | (list 'date (math-dt-to-date | |
| bf77c646 | 1478 | (cons year (cons month (cons day (cdr (cdr (cdr dt)))))))))) |
| 136211a9 EZ |
1479 | |
| 1480 | (defun calcFunc-incyear (date &optional step) | |
| bf77c646 | 1481 | (calcFunc-incmonth date (math-mul (or step 1) 12))) |
| 136211a9 EZ |
1482 | |
| 1483 | ||
| 1484 | ||
| 1485 | (defun calcFunc-bsub (a b) | |
| 1486 | (or (eq (car-safe a) 'date) | |
| 1487 | (math-reject-arg a 'datep)) | |
| 1488 | (if (eq (car-safe b) 'date) | |
| 1489 | (if (math-lessp (nth 1 a) (nth 1 b)) | |
| 1490 | (math-neg (calcFunc-bsub b a)) | |
| 1491 | (math-setup-holidays b) | |
| 1492 | (let* ((da (math-to-business-day a)) | |
| 1493 | (db (math-to-business-day b))) | |
| 1494 | (math-add (math-sub (car da) (car db)) | |
| 1495 | (if (and (cdr db) (not (cdr da))) 1 0)))) | |
| bf77c646 | 1496 | (calcFunc-badd a (math-neg b)))) |
| 136211a9 | 1497 | |
| 3132f345 CW |
1498 | (defvar math-holidays-cache nil) |
| 1499 | (defvar math-holidays-cache-tag t) | |
| 136211a9 EZ |
1500 | (defun calcFunc-badd (a b) |
| 1501 | (if (eq (car-safe b) 'date) | |
| 1502 | (if (eq (car-safe a) 'date) | |
| 25f72ec0 | 1503 | (math-reject-arg nil "*Invalid combination in date arithmetic") |
| 136211a9 EZ |
1504 | (calcFunc-badd b a)) |
| 1505 | (if (eq (car-safe a) 'date) | |
| 1506 | (if (Math-realp b) | |
| 1507 | (if (Math-zerop b) | |
| 1508 | a | |
| 1509 | (let* ((d (math-to-business-day a)) | |
| 1510 | (bb (math-add (car d) | |
| 1511 | (if (and (cdr d) (Math-posp b)) | |
| 1512 | (math-sub b 1) b)))) | |
| 1513 | (or (math-from-business-day bb) | |
| 1514 | (calcFunc-badd a b)))) | |
| 1515 | (if (eq (car-safe b) 'hms) | |
| 1516 | (let ((hours (nth 7 math-holidays-cache))) | |
| 1517 | (setq b (math-div (math-from-hms b 'deg) 24)) | |
| 1518 | (if hours | |
| 1519 | (setq b (math-div b (cdr hours)))) | |
| 1520 | (calcFunc-badd a b)) | |
| 25f72ec0 | 1521 | (math-reject-arg nil "*Invalid combination in date arithmetic"))) |
| bf77c646 | 1522 | (math-reject-arg a 'datep)))) |
| 136211a9 EZ |
1523 | |
| 1524 | (defun calcFunc-holiday (a) | |
| bf77c646 | 1525 | (if (cdr (math-to-business-day a)) 1 0)) |
| 136211a9 | 1526 | |
| 136211a9 EZ |
1527 | ;;; Compute the number of business days since Jan 1, 1 AD. |
| 1528 | ||
| 1529 | (defun math-to-business-day (date &optional need-year) | |
| 1530 | (if (eq (car-safe date) 'date) | |
| 1531 | (setq date (nth 1 date))) | |
| 1532 | (or (Math-realp date) | |
| 1533 | (math-reject-arg date 'datep)) | |
| 1534 | (let* ((day (math-floor date)) | |
| 1535 | (time (math-sub date day)) | |
| 1536 | (dt (math-date-to-dt day)) | |
| 1537 | (delta 0) | |
| 1538 | (holiday nil)) | |
| 1539 | (or (not need-year) (eq (car dt) need-year) | |
| 1540 | (math-reject-arg (list 'date day) "*Generated holiday has wrong year")) | |
| 1541 | (math-setup-holidays date) | |
| 1542 | (let ((days (car math-holidays-cache))) | |
| 1543 | (while (and (setq days (cdr days)) (< (car days) day)) | |
| 1544 | (setq delta (1+ delta))) | |
| 1545 | (and days (= day (car days)) | |
| 1546 | (setq holiday t))) | |
| 1547 | (let* ((weekdays (nth 3 math-holidays-cache)) | |
| 1548 | (weeks (1- (/ (+ day 6) 7))) | |
| 1549 | (wkday (- day 1 (* weeks 7)))) | |
| 1550 | (setq delta (+ delta (* weeks (length weekdays)))) | |
| 1551 | (while (and weekdays (< (car weekdays) wkday)) | |
| 1552 | (setq weekdays (cdr weekdays) | |
| 1553 | delta (1+ delta))) | |
| 1554 | (and weekdays (eq wkday (car weekdays)) | |
| 1555 | (setq holiday t))) | |
| 1556 | (let ((hours (nth 7 math-holidays-cache))) | |
| 1557 | (if hours | |
| 1558 | (progn | |
| 1559 | (setq time (math-div (math-sub time (car hours)) (cdr hours))) | |
| 1560 | (if (Math-lessp time 0) (setq time 0)) | |
| 1561 | (or (Math-lessp time 1) | |
| 1562 | (setq time | |
| 1563 | (math-sub 1 | |
| 1564 | (math-div 1 (math-mul 86400 (cdr hours))))))))) | |
| bf77c646 | 1565 | (cons (math-add (math-sub day delta) time) holiday))) |
| 136211a9 EZ |
1566 | |
| 1567 | ||
| 1568 | ;;; Compute the date a certain number of business days since Jan 1, 1 AD. | |
| f0529b5b | 1569 | ;;; If this returns nil, holiday table was adjusted; redo calculation. |
| 136211a9 EZ |
1570 | |
| 1571 | (defun math-from-business-day (num) | |
| 1572 | (let* ((day (math-floor num)) | |
| 1573 | (time (math-sub num day))) | |
| 1574 | (or (integerp day) | |
| 1575 | (math-reject-arg nil "*Date is outside valid range")) | |
| 1576 | (math-setup-holidays) | |
| 1577 | (let ((days (nth 1 math-holidays-cache)) | |
| 1578 | (delta 0)) | |
| 1579 | (while (and (setq days (cdr days)) (< (car days) day)) | |
| 1580 | (setq delta (1+ delta))) | |
| 1581 | (setq day (+ day delta))) | |
| 1582 | (let* ((weekdays (nth 3 math-holidays-cache)) | |
| 1583 | (bweek (- 7 (length weekdays))) | |
| 1584 | (weeks (1- (/ (+ day (1- bweek)) bweek))) | |
| 1585 | (wkday (- day 1 (* weeks bweek))) | |
| 1586 | (w 0)) | |
| 1587 | (setq day (+ day (* weeks (length weekdays)))) | |
| 1588 | (while (if (memq w weekdays) | |
| 1589 | (setq day (1+ day)) | |
| 1590 | (> (setq wkday (1- wkday)) 0)) | |
| 1591 | (setq w (1+ w))) | |
| 1592 | (let ((hours (nth 7 math-holidays-cache))) | |
| 1593 | (if hours | |
| 1594 | (setq time (math-add (math-mul time (cdr hours)) (car hours))))) | |
| 1595 | (and (not (math-setup-holidays day)) | |
| bf77c646 | 1596 | (list 'date (math-add day time)))))) |
| 136211a9 | 1597 | |
| 98223359 JB |
1598 | ;; The variable math-sh-year is local to math-setup-holidays |
| 1599 | ;; and math-setup-year-holiday, but is used by math-setup-add-holidays, | |
| 1600 | ;; which is called by math-setup-holidays and math-setup-year-holiday. | |
| 1601 | (defvar math-sh-year) | |
| 136211a9 EZ |
1602 | |
| 1603 | (defun math-setup-holidays (&optional date) | |
| 1604 | (or (eq (calc-var-value 'var-Holidays) math-holidays-cache-tag) | |
| 1605 | (let ((h (calc-var-value 'var-Holidays)) | |
| 1606 | (wdnames '( (sun . 0) (mon . 1) (tue . 2) (wed . 3) | |
| 1607 | (thu . 4) (fri . 5) (sat . 6) )) | |
| 1608 | (days nil) (weekdays nil) (exprs nil) (limit nil) (hours nil)) | |
| 1609 | (or (math-vectorp h) | |
| 1610 | (math-reject-arg h "*Holidays variable must be a vector")) | |
| 1611 | (while (setq h (cdr h)) | |
| 1612 | (cond ((or (and (eq (car-safe (car h)) 'date) | |
| 1613 | (integerp (nth 1 (car h)))) | |
| 1614 | (and (eq (car-safe (car h)) 'intv) | |
| 1615 | (eq (car-safe (nth 2 (car h))) 'date)) | |
| 1616 | (eq (car-safe (car h)) 'vec)) | |
| 1617 | (setq days (cons (car h) days))) | |
| 1618 | ((and (eq (car-safe (car h)) 'var) | |
| 1619 | (assq (nth 1 (car h)) wdnames)) | |
| 1620 | (setq weekdays (cons (cdr (assq (nth 1 (car h)) wdnames)) | |
| 1621 | weekdays))) | |
| 1622 | ((and (eq (car-safe (car h)) 'intv) | |
| 1623 | (eq (car-safe (nth 2 (car h))) 'hms) | |
| 1624 | (eq (car-safe (nth 3 (car h))) 'hms)) | |
| 1625 | (if hours | |
| 1626 | (math-reject-arg | |
| 1627 | (car h) "*Only one hours interval allowed in Holidays")) | |
| 1628 | (setq hours (math-div (car h) '(hms 24 0 0))) | |
| 1629 | (if (or (Math-lessp (nth 2 hours) 0) | |
| 1630 | (Math-lessp 1 (nth 3 hours))) | |
| 1631 | (math-reject-arg | |
| 1632 | (car h) "*Hours interval out of range")) | |
| 1633 | (setq hours (cons (nth 2 hours) | |
| 1634 | (math-sub (nth 3 hours) (nth 2 hours)))) | |
| 1635 | (if (Math-zerop (cdr hours)) | |
| 1636 | (math-reject-arg | |
| 1637 | (car h) "*Degenerate hours interval"))) | |
| 1638 | ((or (and (eq (car-safe (car h)) 'intv) | |
| 1639 | (Math-integerp (nth 2 (car h))) | |
| 1640 | (Math-integerp (nth 3 (car h)))) | |
| 1641 | (and (integerp (car h)) | |
| 1642 | (> (car h) 1900) (< (car h) 2100))) | |
| 1643 | (if limit | |
| 1644 | (math-reject-arg | |
| 1645 | (car h) "*Only one limit allowed in Holidays")) | |
| 1646 | (setq limit (calcFunc-vint (car h) '(intv 3 1 2737))) | |
| 1647 | (if (equal limit '(vec)) | |
| 1648 | (math-reject-arg (car h) "*Limit is out of range"))) | |
| 1649 | ((or (math-expr-contains (car h) '(var y var-y)) | |
| 1650 | (math-expr-contains (car h) '(var m var-m))) | |
| 1651 | (setq exprs (cons (car h) exprs))) | |
| 1652 | (t (math-reject-arg | |
| 1653 | (car h) "*Holidays must contain a vector of holidays")))) | |
| 1654 | (if (= (length weekdays) 7) | |
| 1655 | (math-reject-arg nil "*Too many weekend days")) | |
| 1656 | (setq math-holidays-cache (list (list -1) ; 0: days list | |
| 1657 | (list -1) ; 1: inverse-days list | |
| 1658 | nil ; 2: exprs | |
| 1659 | (sort weekdays '<) | |
| 1660 | (or limit '(intv 3 1 2737)) | |
| 1661 | nil ; 5: (lo.hi) expanded years | |
| 1662 | (cons exprs days) | |
| 1663 | hours) ; 7: business hours | |
| 1664 | math-holidays-cache-tag (calc-var-value 'var-Holidays)))) | |
| 1665 | (if date | |
| 1666 | (let ((year (calcFunc-year date)) | |
| 1667 | (limits (nth 5 math-holidays-cache)) | |
| 1668 | (done nil)) | |
| 1669 | (or (eq (calcFunc-in year (nth 4 math-holidays-cache)) 1) | |
| 1670 | (progn | |
| 1671 | (or (eq (car-safe date) 'date) (setq date (list 'date date))) | |
| 1672 | (math-reject-arg date "*Date is outside valid range"))) | |
| 1673 | (unwind-protect | |
| 1674 | (let ((days (nth 6 math-holidays-cache))) | |
| 1675 | (if days | |
| 98223359 | 1676 | (let ((math-sh-year nil)) ; see below |
| 136211a9 EZ |
1677 | (setcar (nthcdr 6 math-holidays-cache) nil) |
| 1678 | (math-setup-add-holidays (cons 'vec (cdr days))) | |
| 1679 | (setcar (nthcdr 2 math-holidays-cache) (car days)))) | |
| 1680 | (cond ((not (nth 2 math-holidays-cache)) | |
| 1681 | (setq done t) | |
| 1682 | nil) | |
| 1683 | ((not limits) | |
| 1684 | (setcar (nthcdr 5 math-holidays-cache) (cons year year)) | |
| 1685 | (math-setup-year-holidays year) | |
| 1686 | (setq done t)) | |
| 1687 | ((< year (car limits)) | |
| 1688 | (message "Computing holidays, %d .. %d" | |
| 1689 | year (1- (car limits))) | |
| 1690 | (calc-set-command-flag 'clear-message) | |
| 1691 | (while (< year (car limits)) | |
| 1692 | (setcar limits (1- (car limits))) | |
| 1693 | (math-setup-year-holidays (car limits))) | |
| 1694 | (setq done t)) | |
| 1695 | ((> year (cdr limits)) | |
| 1696 | (message "Computing holidays, %d .. %d" | |
| 1697 | (1+ (cdr limits)) year) | |
| 1698 | (calc-set-command-flag 'clear-message) | |
| 1699 | (while (> year (cdr limits)) | |
| 1700 | (setcdr limits (1+ (cdr limits))) | |
| 1701 | (math-setup-year-holidays (cdr limits))) | |
| 1702 | (setq done t)) | |
| 1703 | (t | |
| 1704 | (setq done t) | |
| 1705 | nil))) | |
| bf77c646 | 1706 | (or done (setq math-holidays-cache-tag t)))))) |
| 136211a9 | 1707 | |
| 98223359 | 1708 | (defun math-setup-year-holidays (math-sh-year) |
| 136211a9 EZ |
1709 | (let ((exprs (nth 2 math-holidays-cache))) |
| 1710 | (while exprs | |
| 98223359 | 1711 | (let* ((var-y math-sh-year) |
| 136211a9 EZ |
1712 | (var-m nil) |
| 1713 | (expr (math-evaluate-expr (car exprs)))) | |
| 1714 | (if (math-expr-contains expr '(var m var-m)) | |
| 1715 | (let ((var-m 0)) | |
| 1716 | (while (<= (setq var-m (1+ var-m)) 12) | |
| 1717 | (math-setup-add-holidays (math-evaluate-expr expr)))) | |
| 1718 | (math-setup-add-holidays expr))) | |
| bf77c646 | 1719 | (setq exprs (cdr exprs))))) |
| 136211a9 | 1720 | |
| 98223359 | 1721 | (defun math-setup-add-holidays (days) ; uses "math-sh-year" |
| 136211a9 EZ |
1722 | (cond ((eq (car-safe days) 'vec) |
| 1723 | (while (setq days (cdr days)) | |
| 1724 | (math-setup-add-holidays (car days)))) | |
| 1725 | ((eq (car-safe days) 'intv) | |
| 1726 | (let ((day (math-ceiling (nth 2 days)))) | |
| 1727 | (or (eq (calcFunc-in day days) 1) | |
| 1728 | (setq day (math-add day 1))) | |
| 1729 | (while (eq (calcFunc-in day days) 1) | |
| 1730 | (math-setup-add-holidays day) | |
| 1731 | (setq day (math-add day 1))))) | |
| 1732 | ((eq (car-safe days) 'date) | |
| 1733 | (math-setup-add-holidays (nth 1 days))) | |
| 1734 | ((eq days 0)) | |
| 1735 | ((integerp days) | |
| 98223359 | 1736 | (let ((b (math-to-business-day days math-sh-year))) |
| 136211a9 EZ |
1737 | (or (cdr b) ; don't register holidays twice! |
| 1738 | (let ((prev (car math-holidays-cache)) | |
| 1739 | (iprev (nth 1 math-holidays-cache))) | |
| 1740 | (while (and (cdr prev) (< (nth 1 prev) days)) | |
| 1741 | (setq prev (cdr prev) iprev (cdr iprev))) | |
| 1742 | (setcdr prev (cons days (cdr prev))) | |
| 1743 | (setcdr iprev (cons (car b) (cdr iprev))) | |
| 1744 | (while (setq iprev (cdr iprev)) | |
| 1745 | (setcar iprev (1- (car iprev)))))))) | |
| 1746 | ((Math-realp days) | |
| 1747 | (math-reject-arg (list 'date days) "*Invalid holiday value")) | |
| 1748 | (t | |
| bf77c646 | 1749 | (math-reject-arg days "*Holiday formula failed to evaluate")))) |
| 136211a9 EZ |
1750 | |
| 1751 | ||
| 1752 | ||
| 1753 | ||
| 1754 | ;;;; Error forms. | |
| 1755 | ||
| 1756 | ;;; Build a standard deviation form. [X X X] | |
| 1757 | (defun math-make-sdev (x sigma) | |
| 1758 | (if (memq (car-safe x) '(date mod sdev intv vec)) | |
| 1759 | (math-reject-arg x 'realp)) | |
| 1760 | (if (memq (car-safe sigma) '(date mod sdev intv vec)) | |
| 1761 | (math-reject-arg sigma 'realp)) | |
| 1762 | (if (or (Math-negp sigma) (memq (car-safe sigma) '(cplx polar))) | |
| 1763 | (setq sigma (math-abs sigma))) | |
| 1764 | (if (and (Math-zerop sigma) (Math-scalarp x)) | |
| 1765 | x | |
| bf77c646 | 1766 | (list 'sdev x sigma))) |
| 136211a9 | 1767 | (defun calcFunc-sdev (x sigma) |
| bf77c646 | 1768 | (math-make-sdev x sigma)) |
| 136211a9 EZ |
1769 | |
| 1770 | ||
| 1771 | ||
| 1772 | ;;;; Modulo forms. | |
| 1773 | ||
| 1774 | (defun math-normalize-mod (a) | |
| 1775 | (let ((n (math-normalize (nth 1 a))) | |
| 1776 | (m (math-normalize (nth 2 a)))) | |
| 1777 | (if (and (math-anglep n) (math-anglep m) (math-posp m)) | |
| 1778 | (math-make-mod n m) | |
| bf77c646 | 1779 | (math-normalize (list 'calcFunc-makemod n m))))) |
| 136211a9 EZ |
1780 | |
| 1781 | ;;; Build a modulo form. [N R R] | |
| 1782 | (defun math-make-mod (n m) | |
| 1783 | (setq calc-previous-modulo m) | |
| 1784 | (and n | |
| 1785 | (cond ((not (Math-anglep m)) | |
| 1786 | (math-reject-arg m 'anglep)) | |
| 1787 | ((not (math-posp m)) | |
| 1788 | (math-reject-arg m 'posp)) | |
| 1789 | ((Math-anglep n) | |
| 1790 | (if (or (Math-negp n) | |
| 1791 | (not (Math-lessp n m))) | |
| 1792 | (list 'mod (math-mod n m) m) | |
| 1793 | (list 'mod n m))) | |
| 1794 | ((memq (car n) '(+ - / vec neg)) | |
| 1795 | (math-normalize | |
| 1796 | (cons (car n) | |
| 1797 | (mapcar (function (lambda (x) (math-make-mod x m))) | |
| 1798 | (cdr n))))) | |
| 1799 | ((and (eq (car n) '*) (Math-anglep (nth 1 n))) | |
| 1800 | (math-mul (math-make-mod (nth 1 n) m) (nth 2 n))) | |
| 1801 | ((memq (car n) '(* ^ var calcFunc-subscr)) | |
| 1802 | (math-mul (math-make-mod 1 m) n)) | |
| bf77c646 | 1803 | (t (math-reject-arg n 'anglep))))) |
| 136211a9 | 1804 | (defun calcFunc-makemod (n m) |
| bf77c646 | 1805 | (math-make-mod n m)) |
| 136211a9 EZ |
1806 | |
| 1807 | ||
| 1808 | ||
| 1809 | ;;;; Interval forms. | |
| 1810 | ||
| 1811 | ;;; Build an interval form. [X S X X] | |
| 1812 | (defun math-make-intv (mask lo hi) | |
| 1813 | (if (memq (car-safe lo) '(cplx polar mod sdev intv vec)) | |
| 1814 | (math-reject-arg lo 'realp)) | |
| 1815 | (if (memq (car-safe hi) '(cplx polar mod sdev intv vec)) | |
| 1816 | (math-reject-arg hi 'realp)) | |
| 1817 | (or (eq (eq (car-safe lo) 'date) (eq (car-safe hi) 'date)) | |
| 1818 | (math-reject-arg (if (eq (car-safe lo) 'date) hi lo) 'datep)) | |
| 1819 | (if (and (or (Math-realp lo) (eq (car lo) 'date)) | |
| 1820 | (or (Math-realp hi) (eq (car hi) 'date))) | |
| 1821 | (let ((cmp (math-compare lo hi))) | |
| 1822 | (if (= cmp 0) | |
| 1823 | (if (= mask 3) | |
| 1824 | lo | |
| 1825 | (list 'intv mask lo hi)) | |
| 1826 | (if (> cmp 0) | |
| 1827 | (if (= mask 3) | |
| 1828 | (list 'intv 2 lo lo) | |
| 1829 | (list 'intv mask lo lo)) | |
| 1830 | (list 'intv mask lo hi)))) | |
| bf77c646 | 1831 | (list 'intv mask lo hi))) |
| 136211a9 EZ |
1832 | (defun calcFunc-intv (mask lo hi) |
| 1833 | (if (math-messy-integerp mask) (setq mask (math-trunc mask))) | |
| 1834 | (or (natnump mask) (math-reject-arg mask 'fixnatnump)) | |
| 1835 | (or (<= mask 3) (math-reject-arg mask 'range)) | |
| bf77c646 | 1836 | (math-make-intv mask lo hi)) |
| 136211a9 EZ |
1837 | |
| 1838 | (defun math-sort-intv (mask lo hi) | |
| 1839 | (if (Math-lessp hi lo) | |
| 1840 | (math-make-intv (aref [0 2 1 3] mask) hi lo) | |
| bf77c646 | 1841 | (math-make-intv mask lo hi))) |
| 136211a9 EZ |
1842 | |
| 1843 | ||
| 1844 | ||
| 1845 | ||
| 1846 | (defun math-combine-intervals (a am b bm c cm d dm) | |
| 1847 | (let (res) | |
| 1848 | (if (= (setq res (math-compare a c)) 1) | |
| 1849 | (setq a c am cm) | |
| 1850 | (if (= res 0) | |
| 1851 | (setq am (or am cm)))) | |
| 1852 | (if (= (setq res (math-compare b d)) -1) | |
| 1853 | (setq b d bm dm) | |
| 1854 | (if (= res 0) | |
| 1855 | (setq bm (or bm dm)))) | |
| bf77c646 | 1856 | (math-make-intv (+ (if am 2 0) (if bm 1 0)) a b))) |
| 136211a9 EZ |
1857 | |
| 1858 | ||
| 1859 | (defun math-div-mod (a b m) ; [R R R R] (Returns nil if no solution) | |
| 1860 | (and (Math-integerp a) (Math-integerp b) (Math-integerp m) | |
| 1861 | (let ((u1 1) (u3 b) (v1 0) (v3 m)) | |
| 1862 | (while (not (eq v3 0)) ; See Knuth sec 4.5.2, exercise 15 | |
| 1863 | (let* ((q (math-idivmod u3 v3)) | |
| 1864 | (t1 (math-sub u1 (math-mul v1 (car q))))) | |
| 1865 | (setq u1 v1 u3 v3 v1 t1 v3 (cdr q)))) | |
| 1866 | (let ((q (math-idivmod a u3))) | |
| 1867 | (and (eq (cdr q) 0) | |
| bf77c646 | 1868 | (math-mod (math-mul (car q) u1) m)))))) |
| 136211a9 EZ |
1869 | |
| 1870 | (defun math-mod-intv (a b) | |
| 1871 | (let* ((q1 (math-floor (math-div (nth 2 a) b))) | |
| 1872 | (q2 (math-floor (math-div (nth 3 a) b))) | |
| 1873 | (m1 (math-sub (nth 2 a) (math-mul q1 b))) | |
| 1874 | (m2 (math-sub (nth 3 a) (math-mul q2 b)))) | |
| 1875 | (cond ((equal q1 q2) | |
| 1876 | (math-sort-intv (nth 1 a) m1 m2)) | |
| 1877 | ((and (math-equal-int (math-sub q2 q1) 1) | |
| 1878 | (math-zerop m2) | |
| 1879 | (memq (nth 1 a) '(0 2))) | |
| 1880 | (math-make-intv (nth 1 a) m1 b)) | |
| 1881 | (t | |
| bf77c646 | 1882 | (math-make-intv 2 0 b))))) |
| 136211a9 | 1883 | |
| 98223359 | 1884 | ;; The variables math-exp-str and math-exp-pos are local to |
| d55ebb63 | 1885 | ;; math-read-exprs in math-aent.el, but are used by |
| 98223359 JB |
1886 | ;; math-read-angle-brackets, which is called (indirectly) by |
| 1887 | ;; math-read-exprs. | |
| 1888 | (defvar math-exp-str) | |
| 1889 | (defvar math-exp-pos) | |
| 136211a9 EZ |
1890 | |
| 1891 | (defun math-read-angle-brackets () | |
| 97660b3e JB |
1892 | (let* ((last (or (math-check-for-commas t) (length math-exp-str))) |
| 1893 | (str (substring math-exp-str math-exp-pos last)) | |
| 136211a9 EZ |
1894 | (res |
| 1895 | (if (string-match "\\` *\\([a-zA-Z#][a-zA-Z0-9#]* *,? *\\)*:" str) | |
| 1896 | (let ((str1 (substring str 0 (1- (match-end 0)))) | |
| 1897 | (str2 (substring str (match-end 0))) | |
| 1898 | (calc-hashes-used 0)) | |
| 1899 | (setq str1 (math-read-expr (concat "[" str1 "]"))) | |
| 1900 | (if (eq (car-safe str1) 'error) | |
| 1901 | str1 | |
| 1902 | (setq str2 (math-read-expr str2)) | |
| 1903 | (if (eq (car-safe str2) 'error) | |
| 1904 | str2 | |
| 1905 | (append '(calcFunc-lambda) (cdr str1) (list str2))))) | |
| 1906 | (if (string-match "#" str) | |
| 1907 | (let ((calc-hashes-used 0)) | |
| 1908 | (and (setq str (math-read-expr str)) | |
| 1909 | (if (eq (car-safe str) 'error) | |
| 1910 | str | |
| 1911 | (append '(calcFunc-lambda) | |
| 1912 | (calc-invent-args calc-hashes-used) | |
| 1913 | (list str))))) | |
| 1914 | (math-parse-date str))))) | |
| 1915 | (if (stringp res) | |
| 1916 | (throw 'syntax res)) | |
| 1917 | (if (eq (car-safe res) 'error) | |
| 1918 | (throw 'syntax (nth 2 res))) | |
| 97660b3e | 1919 | (setq math-exp-pos (1+ last)) |
| 136211a9 | 1920 | (math-read-token) |
| bf77c646 | 1921 | res)) |
| 136211a9 | 1922 | |
| 76216e5a JB |
1923 | (provide 'calc-forms) |
| 1924 | ||
| cbee283d | 1925 | ;; arch-tag: a3d8f33b-9508-4043-8060-d02b8c9c750c |
| bf77c646 | 1926 | ;;; calc-forms.el ends here |