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;;; ymh-diary.el --- Extensions to the Emacs Diary -*- lexical-binding: t; -*-
;;; Commentary:
;; This file contains extensions to the built-in Emacs Diary. Mainly, it adds a
;; timezone conversion to the diary display function, so that if
;;; Code:
(defun ymh-diary-schedule (y1 m1 d1 y2 m2 d2 dayname &optional mark)
"Entry applies if date is between dates on DAYNAME.
Order of the parameters is M1, D1, Y1, M2, D2, Y2 if
`european-calendar-style' is nil, and D1, M1, Y1, D2, M2, Y2 if
`european-calendar-style' is t. Entry does not apply on a history."
(with-no-warnings (defvar date) (defvar entry))
(let ((date1 (calendar-absolute-from-gregorian (list m1 d1 y1)))
(date2 (calendar-absolute-from-gregorian (list m2 d2 y2)))
(d (calendar-absolute-from-gregorian date)))
(if (and
(<= date1 d)
(<= d date2)
(= (calendar-day-of-week date) dayname)
;;(not (calendar-check-holidays date))
)
(cons mark entry))))
(defun ymh-diary-last-day-of-month (date)
"Return `t` if DATE is the last day of the month."
(let* ((day (calendar-extract-day date))
(month (calendar-extract-month date))
(year (calendar-extract-year date))
(last-day-of-month
(calendar-last-day-of-month month year)))
(= day last-day-of-month)))
(defun ymh-diary-org-export-to-ics ()
"Export diary file to ICal format."
(with-temp-buffer
(insert-file-contents diary-file)
(setq ics-file-body (org-diary-to-ical-string (current-buffer))))
(with-temp-file "~/Downloads/emacs.ics"
(insert "BEGIN:VCALENDAR
PRODID:-//E-DIARY//E-DIARY 1.0//EN
VERSION:2.0
METHOD:PUBLISH
X-WR-CALNAME:Emacs
X-Built-On-Cache-Miss:true
" ics-file-body "END:VCALENDAR")))
(defun ymh-diary-export-to-ics ()
"Export the current diary to ICS format."
(interactive)
(icalendar-export-file
diary-file
(expand-file-name "emacs.ics" "~/Downloads")))
(provide 'ymh-diary)
;;; ymh-diary.el ends here
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