Commit cdcbd5a7 authored by Ed Reingold's avatar Ed Reingold Committed by Glenn Morris
Browse files

Add some new cal-hebrew functions.

* lisp/calendar/cal-hebrew.el (hebrew-calendar-birthday, diary-hebrew-birthday):
New functions.
parent 9903d828
2011-03-01 Ed Reingold <reingold@emr.cs.iit.edu>
* calendar/cal-hebrew.el (hebrew-calendar-birthday)
(diary-hebrew-birthday): New functions.
2011-03-01 Glenn Morris <rgm@gnu.org>
 
* dired.el (dired-safe-switches-p): Beef it up.
......
......@@ -792,6 +792,23 @@ from the cursor position."
(define-obsolete-function-alias 'list-yahrzeit-dates
'calendar-hebrew-list-yahrzeits "23.1")
(defun hebrew-calendar-birthday (birth-date year)
"Absolute date of the anniversary of Hebrew BIRTH-DATE in Hebrew YEAR."
(let* ((birth-day (extract-calendar-day birth-date))
(birth-month (extract-calendar-month birth-date))
(birth-year (extract-calendar-year birth-date)))
(if ; It's Adar in a normal Hebrew year or Adar II
; in a Hebrew leap year,
(= birth-month (hebrew-calendar-last-month-of-year birth-year))
;; Then use the same day in last month of Hebrew year.
(calendar-absolute-from-hebrew
(list (hebrew-calendar-last-month-of-year year) birth-day year))
;; Else use the normal anniversary of the birth date,
;; or the corresponding day in years without that date
(+ (calendar-absolute-from-hebrew
(list birth-month 1 year))
birth-day -1))))
(defvar date)
;; To be called from diary-list-sexp-entries, where DATE is bound.
......@@ -800,6 +817,40 @@ from the cursor position."
"Hebrew calendar equivalent of date diary entry."
(format "Hebrew date (until sunset): %s" (calendar-hebrew-date-string date)))
(defun diary-hebrew-birthday
(birth-month birth-day birth-year &optional after-sunset)
"Hebrew birthday diary entry--entry applies if date is birthdate or the day
before. Parameters are BIRTH-MONTH, BIRTH-DAY, BIRTH-YEAR; the diary entry is
assumed to be the name of the person. Date of birth is on the *civil*
calendar; although the date of birth is specified by the civil calendar, the
proper Hebrew calendar birthday is determined. NOTE: If the birth occurred
after local sunset on the given civil date, the following civil date
corresponds to the Hebrew birthday--the optional parameter AFTER-SUNSET does
this correction when t. If `european-calendar-style' is t, the order of the
parameters is changed to BIRTH-DAY, BIRTH-MONTH, BIRTH-YEAR."
(let* ((h-date (calendar-hebrew-from-absolute
(+ (calendar-absolute-from-gregorian
(if european-calendar-style
(list birth-day birth-month birth-year)
(list birth-month birth-day birth-year)))
(if after-sunset 1 0))))
(h-month (extract-calendar-month h-date))
(h-day (extract-calendar-day h-date))
(h-year (extract-calendar-year h-date))
(d (calendar-absolute-from-gregorian date))
(h-yr (extract-calendar-year (calendar-hebrew-from-absolute d)))
(age (- h-yr h-year))
(b-date (hebrew-calendar-birthday h-date h-yr)))
(if (and (> age 0) (or (= b-date d) (= b-date (1+ d))))
(format "%s's %d%s Hebrew birthday%s"
entry
age
(cond ((= (% age 10) 1) "st")
((= (% age 10) 2) "nd")
((= (% age 10) 3) "rd")
(t "th"))
(if (= b-date d) "" " (evening)")))))
;;;###diary-autoload
(defun diary-hebrew-omer (&optional mark)
"Omer count diary entry.
......
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