;; diary.el that deal with the French Revolutionary calendar.
;; Technical details of the French Revolutionary calendar can be found in
+;; ``Calendrical Calculations'' by Nachum Dershowitz and Edward M. Reingold,
+;; Cambridge University Press (1997), and in
;; ``Calendrical Calculations, Part II: Three Historical Calendars'' by
;; E. M. Reingold, N. Dershowitz, and S. M. Clamen, Software--Practice and
;; Experience, Volume 23, Number 4 (April, 1993), pages 383-404.
["Vendémiaire" "Brumaire" "Frimaire" "Nivôse" "Pluviôse" "Ventôse"
"Germinal" "Floréal" "Prairial" "Messidor" "Thermidor" "Fructidor"])
-(defun french-calendar-month-name-array ()
- (if (french-calendar-accents)
- french-calendar-multibyte-month-name-array
- french-calendar-month-name-array))
-
(defconst french-calendar-day-name-array
["Primidi" "Duodi" "Tridi" "Quartidi" "Quintidi" "Sextidi" "Septidi"
"Octidi" "Nonidi" "Decadi"])
(defconst french-calendar-multibyte-special-days-array
- ["de la Vertu" "du Génie" "du Labour" "de la Raison"
- "de la Récompense" "de la Révolution"])
-
-(defun french-calendar-day-name-array ()
- french-calendar-day-name-array)
+ ["de la Vertu" "du Génie" "du Labour" "de la Raison" "de la Récompense"
+ "de la Révolution"])
(defconst french-calendar-special-days-array
["de la Vertu" "du Ge'nie" "du Labour" "de la Raison" "de la Re'compense"
"de la Re'volution"])
+(defun french-calendar-month-name-array ()
+ (if (french-calendar-accents)
+ french-calendar-multibyte-month-name-array
+ french-calendar-month-name-array))
+
+(defun french-calendar-day-name-array ()
+ french-calendar-day-name-array)
+
(defun french-calendar-special-days-array ()
(if (french-calendar-accents)
french-calendar-multibyte-special-days-array
(defun calendar-print-french-date ()
"Show the French Revolutionary calendar equivalent of the selected date."
(interactive)
- (let ((f (calendar-french-date-string (calendar-cursor-to-date t)))
- (enable-multibyte-characters t))
+ (let ((f (calendar-french-date-string (calendar-cursor-to-date t))))
(if (string-equal f "")
(message "Date is pre-French Revolution")
(message "French Revolutionary date: %s" f))))
"Move cursor to French Revolutionary date DATE.
Echo French Revolutionary date unless NOECHO is t."
(interactive
- (let* ((oldval enable-multibyte-characters)
- (year (unwind-protect
- (progn
- (setq-default enable-multibyte-characters t)
+ (let ((accents (french-calendar-accents))
+ (months (french-calendar-month-name-array))
+ (special-days (french-calendar-special-days-array)))
+ (let* ((year
+ (progn
+ (calendar-read
+ (if accents
+ "Année de la Révolution (>0): "
+ "Anne'e de la Re'volution (>0): ")
+ '(lambda (x) (> x 0))
+ (int-to-string
+ (extract-calendar-year
+ (calendar-french-from-absolute
+ (calendar-absolute-from-gregorian
+ (calendar-current-date))))))))
+ (month-list
+ (mapcar 'list
+ (append months
+ (if (french-calendar-leap-year-p year)
+ (mapcar
+ '(lambda (x) (concat "Jour " x))
+ french-calendar-special-days-array)
+ (reverse
+ (cdr;; we don't want rev. day in a non-leap yr.
+ (reverse
+ (mapcar
+ '(lambda (x)
+ (concat "Jour " x))
+ special-days))))))))
+ (completion-ignore-case t)
+ (month (cdr (assoc
+ (capitalize
+ (completing-read
+ "Mois ou Sansculottide: "
+ month-list
+ nil t))
+ (calendar-make-alist
+ month-list
+ 1
+ '(lambda (x) (capitalize (car x)))))))
+ (decade (if (> month 12)
+ 1
(calendar-read
- (if (french-calendar-accents)
- "Année de la Révolution (>0): "
- "Anne'e de la Re'volution (>0): ")
- '(lambda (x) (> x 0))
- (int-to-string
- (extract-calendar-year
- (calendar-french-from-absolute
- (calendar-absolute-from-gregorian
- (calendar-current-date)))))))
- (setq-default enable-multibyte-characters oldval)))
- (month-list
- (mapcar 'list
- (append (french-calendar-month-name-array)
- (if (french-calendar-leap-year-p year)
- (mapcar
- '(lambda (x) (concat "Jour " x))
- (french-calendar-special-days-array))
- (reverse
- (cdr;; we don't want rev. day in a non-leap yr.
- (reverse
- (mapcar
- '(lambda (x) (concat "Jour " x))
- (french-calendar-special-days-array)))))))))
- (completion-ignore-case t)
- (month (cdr (assoc
- (capitalize
- (completing-read
- "Mois ou Sansculottide: "
- month-list
- nil t))
- (calendar-make-alist
- month-list
- 1
- '(lambda (x) (capitalize (car x)))))))
- (decade (if (> month 12)
- 1
- (calendar-read
- (if (french-calendar-accents)
- "Décade (1-3): "
- "De'cade (1-3): ")
- '(lambda (x) (memq x '(1 2 3))))))
- (day (if (> month 12)
- (- month 12)
- (calendar-read
- "Jour (1-10): "
- '(lambda (x) (and (<= 1 x) (<= x 10))))))
- (month (if (> month 12) 13 month))
- (day (+ day (* 10 (1- decade)))))
- (list (list month day year))))
+ (if accents
+ "Décade (1-3): "
+ "De'cade (1-3): ")
+ '(lambda (x) (memq x '(1 2 3))))))
+ (day (if (> month 12)
+ (- month 12)
+ (calendar-read
+ "Jour (1-10): "
+ '(lambda (x) (and (<= 1 x) (<= x 10))))))
+ (month (if (> month 12) 13 month))
+ (day (+ day (* 10 (1- decade)))))
+ (list (list month day year)))))
(calendar-goto-date (calendar-gregorian-from-absolute
(calendar-absolute-from-french date)))
(or noecho (calendar-print-french-date)))