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+;;; org-mac-iCal.el --- Imports events from iCal.app to the Emacs diary
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+
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+;; Copyright (C) 2009 Christopher Suckling
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+
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+;; Author: Christopher Suckling <suckling at gmail dot com>
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+
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+;; This file 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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+
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+;; It is distributed in the hope that it will be useful, but WITHOUT
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+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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+;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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+;; License for more details.
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+
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+;; You should have received a copy of the GNU General Public License
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+;; along with GNU Emacs; see the file COPYING. If not, write to the
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+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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+;; Boston, MA 02110-1301, USA.
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+
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+;; Version: 0.1057.104
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+;; Keywords: outlines, calendar
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+
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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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+
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+;;; Code:
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+
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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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+
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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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+
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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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+
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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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+
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+ (setq local-calendars nil)
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+ (setq local-calendars (directory-files "~/Library/Calendars" 1 ".*calendar$"))
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+
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+ (setq all-calendars (append caldav-calendars local-calendars))
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+
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+ ;; parse each calendar's Info.plist to see if calendar is checked in iCal
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+ (setq all-calendars (delq 'nil (mapcar
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+ (lambda (x)
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+ (omi-checked x))
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+ all-calendars)))
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+
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+ ;; for each caledar, concatenate individual events into a single ics file
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+ (with-temp-buffer
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+ (shell-command "sw_vers" " *temp*")
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+ (when (re-search-backward "10.5" nil t)
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+ (omi-concat-leopard-ics all-calendars)))
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+
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+ ;; move any caldav ics files to the same place as local ics files
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+ (mapc
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+ (lambda (x)
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+ (when (directory-files x 1 ".*ics$")
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+ (rename-file (car (directory-files x 1 ".*ics$")) (concat "~/Library/Calendars/" (car (directory-files x nil ".*ics$"))))))
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+ caldav-folders)
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+
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+ ;; check calendar has contents and import
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+ (setq import-calendars (directory-files "~/Library/Calendars" 1 ".*ics$"))
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+ (mapc
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+ (lambda (x)
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+ (when (/= (nth 7 (file-attributes x 'string)) 0)
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+ (omi-import-ics x)))
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+ import-calendars)
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+
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+ ;; tidy up intermediate files and buffers
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+ (setq usedCalendarsBuffers (mapcar (function buffer-name) (buffer-list)))
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+ (omi-kill-ics-buffer usedCalendarsBuffers)
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+ (setq usedCalendarsFiles (directory-files "~/Library/Calendars" 1 ".*ics$"))
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+ (omi-delete-ics-file usedCalendarsFiles)
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+
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+ (switch-to-buffer currentBuffer))
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+
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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$"))
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+ (with-temp-buffer
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+ (mapc
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+ (lambda (y)
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+ (insert-file-contents (expand-file-name y)))
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+ omi-leopard-events)
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+ (write-region (point-min) (point-max) (concat (expand-file-name x) ".ics"))))
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+ list))
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+
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+(defun omi-import-ics (string)
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+ "Imports an ics file into the Emacs diary. First tidies up the
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+ics file so that it is suitable for import and selects a sensible
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+date range so that Emacs calendar view doesn't grind to a halt"
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+ (with-temp-buffer
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+ (insert-file-contents string)
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+ (goto-char (point-min))
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+ (while
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+ (re-search-forward "^BEGIN:VCALENDAR$" 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 0)
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+ (setq monthEntry 0))
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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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+ (when (or
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+ (and
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+ (= yearEntry year)
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+ (or (< monthEntry (- month (/ org-mac-iCal-range 2))) (> monthEntry (+ month (/ org-mac-iCal-range 2)))))
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+ (< yearEntry (- year 1))
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+ (> yearEntry (+ year 1))
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+ (and
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+ (= yearEntry (- year 1)) (/= monthEntry 12))
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+ (and
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+ (= yearEntry (+ year 1)) (/= monthEntry 1)))
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+ (delete-region startEntry endEntry))))
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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$" nil t)
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+ (delete-blank-lines))
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+ (goto-line 1)
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+ (while
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+ (re-search-forward "^ORG.*" nil t)
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+ (replace-match "\n"))
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+ (goto-line 1)
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+ (write-region (point-min) (point-max) string))
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+
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+ (icalendar-import-file string (expand-file-name "~/.emacs.d/diary")))
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+
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+(defun omi-kill-diary-buffer (list)
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+ (mapc
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+ (lambda (x)
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+ (if (string-match "^diary" x)
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+ (kill-buffer x)))
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+ list))
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+
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+(defun omi-kill-ics-buffer (list)
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+ (mapc
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+ (lambda (x)
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+ (if (string-match "ics$" x)
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+ (kill-buffer x)))
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+ list))
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+
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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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+
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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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+
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+(provide 'org-mac-iCal)
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+
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+;;; org-mac-iCal.el ends here
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Carsten Dominik