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lisp/org-contrib/org-mac-iCal.el
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lisp/org-contrib/org-mac-iCal.el
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;;; org-mac-iCal.el --- Imports events from iCal.app to the Emacs diary
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;; Copyright (C) 2009-2014, 2021 Christopher Suckling
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;; Author: Christopher Suckling <suckling at gmail dot com>
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;; Version: 0.1057.104
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;; Keywords: outlines, calendar
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;; This file is not part of GNU Emacs.
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;; This program is Free Software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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;; for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;; This file provides the import of events from Mac OS X 10.5 iCal.app
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;; into the Emacs diary (it is not compatible with OS X < 10.5). The
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;; function org-mac-iCal will import events in all checked iCal.app
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;; calendars for the date range org-mac-iCal-range months, centered
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;; around the current date.
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;;
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;; CAVEAT: This function is destructive; it will overwrite the current
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;; contents of the Emacs diary.
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;;
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;; Installation: add (require 'org-mac-iCal) to your .emacs.
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;;
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;; If you view Emacs diary entries in org-agenda, the following hook
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;; will ensure that all-day events are not orphaned below TODO items
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;; and that any supplementary fields to events (e.g. Location) are
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;; grouped with their parent event
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;;
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;; (add-hook 'org-agenda-cleanup-fancy-diary-hook
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;; (lambda ()
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;; (goto-char (point-min))
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;; (save-excursion
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;; (while (re-search-forward "^[a-z]" nil t)
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;; (goto-char (match-beginning 0))
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;; (insert "0:00-24:00 ")))
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;; (while (re-search-forward "^ [a-z]" nil t)
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;; (goto-char (match-beginning 0))
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;; (save-excursion
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;; (re-search-backward "^[0-9]+:[0-9]+-[0-9]+:[0-9]+ " nil t))
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;; (insert (match-string 0)))))
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;;; Code:
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(defcustom org-mac-iCal-range 2
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"The range in months to import iCal.app entries into the Emacs
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diary. The import is centered around today's date; thus a value
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of 2 imports entries for one month before and one month after
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today's date"
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:group 'org-time
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:type 'integer)
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(defun org-mac-iCal ()
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"Selects checked calendars in iCal.app and imports them into
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the the Emacs diary"
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(interactive)
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;; kill diary buffers then empty diary files to avoid duplicates
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(setq currentBuffer (buffer-name))
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(setq openBuffers (mapcar (function buffer-name) (buffer-list)))
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(omi-kill-diary-buffer openBuffers)
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(with-temp-buffer
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(insert-file-contents diary-file)
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(delete-region (point-min) (point-max))
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(write-region (point-min) (point-max) diary-file))
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;; determine available calendars
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(setq caldav-folders (directory-files "~/Library/Calendars" 1 ".*caldav$"))
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(setq caldav-calendars nil)
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(mapc
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(lambda (x)
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(setq caldav-calendars (nconc caldav-calendars (directory-files x 1 ".*calendar$"))))
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caldav-folders)
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(setq local-calendars nil)
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(setq local-calendars (directory-files "~/Library/Calendars" 1 ".*calendar$"))
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(setq all-calendars (append caldav-calendars local-calendars))
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;; parse each calendar's Info.plist to see if calendar is checked in iCal
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(setq all-calendars (delq 'nil (mapcar
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(lambda (x)
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(omi-checked x))
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all-calendars)))
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;; for each calendar, concatenate individual events into a single ics file
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(with-temp-buffer
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(shell-command "sw_vers" (current-buffer))
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(when (re-search-backward "10\\.[5678]" nil t)
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(omi-concat-leopard-ics all-calendars)))
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;; move all caldav ics files to the same place as local ics files
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(mapc
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(lambda (x)
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(mapc
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(lambda (y)
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(rename-file (concat x "/" y);
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(concat "~/Library/Calendars/" y)))
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(directory-files x nil ".*ics$")))
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caldav-folders)
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;; check calendar has contents and import
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(setq import-calendars (directory-files "~/Library/Calendars" 1 ".*ics$"))
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(mapc
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(lambda (x)
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(when (/= (nth 7 (file-attributes x 'string)) 0)
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(omi-import-ics x)))
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import-calendars)
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;; tidy up intermediate files and buffers
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(setq usedCalendarsBuffers (mapcar (function buffer-name) (buffer-list)))
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(omi-kill-ics-buffer usedCalendarsBuffers)
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(setq usedCalendarsFiles (directory-files "~/Library/Calendars" 1 ".*ics$"))
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(omi-delete-ics-file usedCalendarsFiles)
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(org-pop-to-buffer-same-window currentBuffer))
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(defun omi-concat-leopard-ics (list)
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"Leopard stores each iCal.app event in a separate ics file.
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Whilst useful for Spotlight indexing, this is less helpful for
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icalendar-import-file. omi-concat-leopard-ics concatenates these
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individual event files into a single ics file"
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(mapc
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(lambda (x)
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(setq omi-leopard-events (directory-files (concat x "/Events") 1 ".*ics$"))
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(with-temp-buffer
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(mapc
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(lambda (y)
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(insert-file-contents (expand-file-name y)))
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omi-leopard-events)
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(write-region (point-min) (point-max) (concat (expand-file-name x) ".ics"))))
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list))
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(defun omi-import-ics (string)
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"Imports an ics file into the Emacs diary. First tidies up the
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ics file so that it is suitable for import and selects a sensible
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date range so that Emacs calendar view doesn't grind to a halt"
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(with-temp-buffer
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(insert-file-contents string)
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(goto-char (point-min))
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(while
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(re-search-forward "^BEGIN:VCALENDAR$" nil t)
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(setq startEntry (match-beginning 0))
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(re-search-forward "^END:VCALENDAR$" nil t)
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(setq endEntry (match-end 0))
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(save-restriction
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(narrow-to-region startEntry endEntry)
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(goto-char (point-min))
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(re-search-forward "\\(^DTSTART;.*:\\)\\([0-9][0-9][0-9][0-9]\\)\\([0-9][0-9]\\)" nil t)
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(if (or (eq (match-string 2) nil) (eq (match-string 3) nil))
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(progn
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(setq yearEntry 1)
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(setq monthEntry 1))
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(setq yearEntry (string-to-number (match-string 2)))
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(setq monthEntry (string-to-number (match-string 3))))
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(setq year (string-to-number (format-time-string "%Y")))
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(setq month (string-to-number (format-time-string "%m")))
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(setq now (list month 1 year))
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(setq entryDate (list monthEntry 1 yearEntry))
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;; Check to see if this is a repeating event
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(goto-char (point-min))
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(setq isRepeating (re-search-forward "^RRULE:" nil t))
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;; Delete if outside range and not repeating
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(when (and
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(not isRepeating)
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(> (abs (- (calendar-absolute-from-gregorian now)
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(calendar-absolute-from-gregorian entryDate)))
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(* (/ org-mac-iCal-range 2) 30))
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(delete-region startEntry endEntry)))
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(goto-char (point-max))))
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(while
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(re-search-forward "^END:VEVENT$" nil t)
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(delete-blank-lines))
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(goto-line 1)
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(insert "BEGIN:VCALENDAR\n\n")
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(goto-line 2)
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(while
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(re-search-forward "^BEGIN:VCALENDAR$" nil t)
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(replace-match "\n"))
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(goto-line 2)
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(while
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(re-search-forward "^END:VCALENDAR$" nil t)
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(replace-match "\n"))
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(insert "END:VCALENDAR")
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(goto-line 1)
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(delete-blank-lines)
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(while
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(re-search-forward "^END:VEVENT$" nil t)
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(delete-blank-lines))
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(goto-line 1)
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(while
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(re-search-forward "^ORG.*" nil t)
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(replace-match "\n"))
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(goto-line 1)
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(write-region (point-min) (point-max) string))
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(icalendar-import-file string diary-file))
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(defun omi-kill-diary-buffer (list)
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(mapc
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(lambda (x)
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(if (string-match "^diary" x)
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(kill-buffer x)))
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list))
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(defun omi-kill-ics-buffer (list)
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(mapc
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(lambda (x)
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(if (string-match "ics$" x)
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(kill-buffer x)))
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list))
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(defun omi-delete-ics-file (list)
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(mapc
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(lambda (x)
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(delete-file x))
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list))
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(defun omi-checked (directory)
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"Parse Info.plist in iCal.app calendar folder and determine
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whether Checked key is 1. If Checked key is not 1, remove
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calendar from list of calendars for import"
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(let* ((root (xml-parse-file (car (directory-files directory 1 "Info.plist"))))
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(plist (car root))
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(dict (car (xml-get-children plist 'dict)))
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(keys (cdr (xml-node-children dict)))
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(keys (mapcar
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(lambda (x)
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(cond ((listp x)
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x)))
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keys))
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(keys (delq 'nil keys)))
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(when (equal "1" (car (cddr (lax-plist-get keys '(key nil "Checked")))))
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directory)))
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(provide 'org-mac-iCal)
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;;; org-mac-iCal.el ends here
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