1 ;;; icalendar.el --- iCalendar implementation -*-coding: utf-8 -*-
3 ;; Copyright (C) 2002-2015 Free Software Foundation, Inc.
5 ;; Author: Ulf Jasper <ulf.jasper@web.de>
6 ;; Created: August 2002
8 ;; Human-Keywords: calendar, diary, iCalendar, vCalendar
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software: you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation, either version 3 of the License, or
16 ;; (at your option) any later version.
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 ;; This package is documented in the Emacs Manual.
31 ;; - Diary entries which have a start time but no end time are assumed to
32 ;; last for one hour when they are exported.
33 ;; - Weekly diary entries are assumed to occur the first time in the first
34 ;; week of the year 2000 when they are exported.
35 ;; - Yearly diary entries are assumed to occur the first time in the year
36 ;; 1900 when they are exported.
37 ;; - Float diary entries are assumed to occur the first time on the
38 ;; day when they are exported.
42 ;; 0.07 onwards: see commit logs and ../ChangeLog*.
45 ;; - Bugfixes regarding icalendar-import-format-*.
46 ;; - Fix in icalendar-convert-diary-to-ical -- thanks to Philipp Grau.
49 ;; - New import format scheme: Replaced icalendar-import-prefix-*,
50 ;; icalendar-import-ignored-properties, and
51 ;; icalendar-import-separator with icalendar-import-format(-*).
52 ;; - icalendar-import-file and icalendar-convert-diary-to-ical
53 ;; have an extra parameter which should prevent them from
54 ;; erasing their target files (untested!).
55 ;; - Tested with Emacs 21.3.2
58 ;; - Bugfix: import: double quoted param values did not work
59 ;; - Read DURATION property when importing.
60 ;; - Added parameter icalendar-duration-correction.
63 ;; - Export takes care of european-calendar-style.
64 ;; - Tested with Emacs 21.3.2 and XEmacs 21.4.12
67 ;; - Should work in XEmacs now. Thanks to Len Trigg for the XEmacs patches!
68 ;; - Added exporting from Emacs diary to ical.
69 ;; - Some bugfixes, after testing with calendars from http://icalshare.com.
70 ;; - Tested with Emacs 21.3.2 and XEmacs 21.4.12
73 ;; - First published version. Trial version. Alpha version.
75 ;; ======================================================================
78 ;; * Import from ical to diary:
79 ;; + Need more properties for icalendar-import-format
80 ;; (added all that Mozilla Calendar uses)
81 ;; From iCal specifications (RFC2445: 4.8.1), icalendar.el lacks
82 ;; ATTACH, CATEGORIES, COMMENT, GEO, PERCENT-COMPLETE (VTODO),
83 ;; PRIORITY, RESOURCES) not considering date/time and time-zone
84 ;; + check vcalendar version
85 ;; + check (unknown) elements
86 ;; + recurring events!
87 ;; + works for european style calendars only! Does it?
89 ;; + exceptions in recurring events
90 ;; + the parser is too soft
91 ;; + error log is incomplete
92 ;; + nice to have: #include "webcal://foo.com/some-calendar.ics"
93 ;; + timezones probably still need some improvements.
95 ;; * Export from diary to ical
96 ;; + diary-date, diary-float, and self-made sexp entries are not
100 ;; + clean up all those date/time parsing functions
101 ;; + Handle todo items?
102 ;; + Check iso 8601 for datetime and period
103 ;; + Which chars to (un)escape?
108 (defconst icalendar-version "0.19"
109 "Version number of icalendar.el.")
111 ;; ======================================================================
113 ;; ======================================================================
114 (defgroup icalendar nil
119 (defcustom icalendar-import-format
121 "Format for importing events from iCalendar into Emacs diary.
122 It defines how iCalendar events are inserted into diary file.
123 This may either be a string or a function.
125 In case of a formatting STRING the following specifiers can be used:
126 %c Class, see `icalendar-import-format-class'
127 %d Description, see `icalendar-import-format-description'
128 %l Location, see `icalendar-import-format-location'
129 %o Organizer, see `icalendar-import-format-organizer'
130 %s Summary, see `icalendar-import-format-summary'
131 %t Status, see `icalendar-import-format-status'
132 %u URL, see `icalendar-import-format-url'
133 %U UID, see `icalendar-import-format-uid'
135 A formatting FUNCTION will be called with a VEVENT as its only
136 argument. It must return a string. See
137 `icalendar-import-format-sample' for an example."
139 (string :tag "String")
140 (function :tag "Function"))
143 (defcustom icalendar-import-format-summary
145 "Format string defining how the summary element is formatted.
146 This applies only if the summary is not empty! `%s' is replaced
151 (defcustom icalendar-import-format-description
153 "Format string defining how the description element is formatted.
154 This applies only if the description is not empty! `%s' is
155 replaced by the description."
159 (defcustom icalendar-import-format-location
161 "Format string defining how the location element is formatted.
162 This applies only if the location is not empty! `%s' is replaced
167 (defcustom icalendar-import-format-organizer
169 "Format string defining how the organizer element is formatted.
170 This applies only if the organizer is not empty! `%s' is
171 replaced by the organizer."
175 (defcustom icalendar-import-format-url
177 "Format string defining how the URL element is formatted.
178 This applies only if the URL is not empty! `%s' is replaced by
183 (defcustom icalendar-import-format-uid
185 "Format string defining how the UID element is formatted.
186 This applies only if the UID is not empty! `%s' is replaced by
192 (defcustom icalendar-import-format-status
194 "Format string defining how the status element is formatted.
195 This applies only if the status is not empty! `%s' is replaced by
200 (defcustom icalendar-import-format-class
202 "Format string defining how the class element is formatted.
203 This applies only if the class is not empty! `%s' is replaced by
208 (defcustom icalendar-recurring-start-year
210 "Start year for recurring events.
211 Some calendar browsers only propagate recurring events for
212 several years beyond the start time. Set this string to a year
213 just before the start of your personal calendar."
217 (defcustom icalendar-export-hidden-diary-entries
219 "Determines whether hidden diary entries are exported.
220 If non-nil hidden diary entries (starting with `&') get exported,
221 if nil they are ignored."
225 (defcustom icalendar-uid-format
227 "Format of unique ID code (UID) for each iCalendar object.
228 The following specifiers are available:
229 %c COUNTER, an integer value that is increased each time a uid is
230 generated. This may be necessary for systems which do not
231 provide time-resolution finer than a second.
232 %h HASH, a hash value of the diary entry,
233 %s DTSTART, the start date (excluding time) of the diary entry,
234 %t TIMESTAMP, a unique creation timestamp,
235 %u USERNAME, the variable `user-login-name'.
237 For example, a value of \"%s_%h@mydomain.com\" will generate a
238 UID code for each entry composed of the time of the event, a hash
239 code for the event, and your personal domain name."
243 (defcustom icalendar-export-sexp-enumeration-days
245 "Number of days over which a sexp diary entry is enumerated.
246 In general sexp entries cannot be translated to icalendar format.
247 They are therefore enumerated, i.e. explicitly evaluated for a
248 certain number of days, and then exported. The enumeration starts
249 on the current day and continues for the number of days given here.
251 See `icalendar-export-sexp-enumerate-all' for a list of sexp
252 entries which by default are NOT enumerated."
257 (defcustom icalendar-export-sexp-enumerate-all
259 "Determines whether ALL sexp diary entries are enumerated.
260 If non-nil all sexp diary entries are enumerated for
261 `icalendar-export-sexp-enumeration-days' days instead of
262 translating into an icalendar equivalent. This affects the
263 following sexp diary entries: `diary-anniversary',
264 `diary-cyclic', `diary-date', `diary-float',`diary-block'. All
265 other sexp entries are enumerated in any case."
271 (defcustom icalendar-export-alarms
273 "Determine if and how alarms are included in exported diary events."
275 :type '(choice (const :tag "Do not include alarms in export"
277 (list :tag "Create alarms in exported diary entries"
278 (integer :tag "Advance time (minutes)"
280 (set :tag "Alarm type"
282 (const audio :tag "Audio"))
284 (const display :tag "Display"))
287 (repeat :tag "Attendees"
288 (string :tag "Email"))))))
292 (defvar icalendar-debug nil
293 "Enable icalendar debug messages.")
295 ;; ======================================================================
296 ;; NO USER SERVICEABLE PARTS BELOW THIS LINE
297 ;; ======================================================================
299 (defconst icalendar--weekday-array ["SU" "MO" "TU" "WE" "TH" "FR" "SA"])
301 ;; ======================================================================
302 ;; all the other libs we need
303 ;; ======================================================================
307 ;; ======================================================================
309 ;; ======================================================================
310 (defun icalendar--dmsg (&rest args)
311 "Print message ARGS if `icalendar-debug' is non-nil."
313 (apply 'message args)))
315 ;; ======================================================================
316 ;; Core functionality
317 ;; Functions for parsing icalendars, importing and so on
318 ;; ======================================================================
320 (defun icalendar--get-unfolded-buffer (folded-ical-buffer)
321 "Return a new buffer containing the unfolded contents of a buffer.
322 Folding is the iCalendar way of wrapping long lines. In the
323 created buffer all occurrences of CR LF BLANK are replaced by the
324 empty string. Argument FOLDED-ICAL-BUFFER is the unfolded input
326 (let ((unfolded-buffer (get-buffer-create " *icalendar-work*")))
328 (set-buffer unfolded-buffer)
330 (insert-buffer-substring folded-ical-buffer)
331 (goto-char (point-min))
332 (while (re-search-forward "\r?\n[ \t]" nil t)
333 (replace-match "" nil nil)))
336 (defsubst icalendar--rris (regexp rep string &optional fixedcase literal)
337 "Replace regular expression in string.
338 Pass arguments REGEXP REP STRING FIXEDCASE LITERAL to
339 `replace-regexp-in-string' (Emacs) or to `replace-in-string' (XEmacs)."
340 (cond ((fboundp 'replace-regexp-in-string)
342 (replace-regexp-in-string regexp rep string fixedcase literal))
343 ((fboundp 'replace-in-string)
345 (save-match-data ;; apparently XEmacs needs save-match-data
346 (replace-in-string string regexp rep literal)))))
348 (defun icalendar--read-element (invalue inparams)
349 "Recursively read the next iCalendar element in the current buffer.
350 INVALUE gives the current iCalendar element we are reading.
351 INPARAMS gives the current parameters.....
352 This function calls itself recursively for each nested calendar element
354 (let (element children line name params param param-name param-value
359 (re-search-forward "^\\([A-Za-z0-9-]+\\)[;:]" nil t))
360 (setq name (intern (match-string 1)))
364 (while (looking-at ";")
365 (re-search-forward ";\\([A-Za-z0-9-]+\\)=" nil nil)
366 (setq param-name (intern (match-string 1)))
367 (re-search-forward "\\(\\([^;,:\"]+\\)\\|\"\\([^\"]+\\)\"\\)[;:]"
370 (setq param-value (or (match-string 2) (match-string 3)))
371 (setq param (list param-name param-value))
372 (while (looking-at ",")
373 (re-search-forward "\\(\\([^;,:]+\\)\\|\"\\([^\"]+\\)\"\\)"
376 (setq param-value (match-string 2))
377 (setq param-value (match-string 3)))
378 (setq param (append param param-value)))
379 (setq params (append params param)))
380 (unless (looking-at ":")
383 (re-search-forward "\\(.*\\)\\(\r?\n[ \t].*\\)*" nil t)
384 (setq value (icalendar--rris "\r?\n[ \t]" "" (match-string 0)))
385 (setq line (list name params value))
386 (cond ((eq name 'BEGIN)
389 (list (icalendar--read-element (intern value)
394 (setq element (append element (list line))))))
396 (list invalue inparams element children)
399 ;; ======================================================================
400 ;; helper functions for examining events
401 ;; ======================================================================
403 ;;(defsubst icalendar--get-all-event-properties (event)
404 ;; "Return the list of properties in this EVENT."
405 ;; (car (cddr event)))
407 (defun icalendar--get-event-property (event prop)
408 "For the given EVENT return the value of the first occurrence of PROP."
410 (let ((props (car (cddr event))) pp)
412 (setq pp (car props))
413 (if (eq (car pp) prop)
414 (throw 'found (car (cddr pp))))
415 (setq props (cdr props))))
418 (defun icalendar--get-event-property-attributes (event prop)
419 "For the given EVENT return attributes of the first occurrence of PROP."
421 (let ((props (car (cddr event))) pp)
423 (setq pp (car props))
424 (if (eq (car pp) prop)
425 (throw 'found (cadr pp)))
426 (setq props (cdr props))))
429 (defun icalendar--get-event-properties (event prop)
430 "For the given EVENT return a list of all values of the property PROP."
431 (let ((props (car (cddr event))) pp result)
433 (setq pp (car props))
434 (if (eq (car pp) prop)
435 (setq result (append (split-string (car (cddr pp)) ",") result)))
436 (setq props (cdr props)))
439 ;; (defun icalendar--set-event-property (event prop new-value)
440 ;; "For the given EVENT set the property PROP to the value NEW-VALUE."
442 ;; (let ((props (car (cddr event))) pp)
444 ;; (setq pp (car props))
445 ;; (when (eq (car pp) prop)
446 ;; (setcdr (cdr pp) new-value)
447 ;; (throw 'found (car (cddr pp))))
448 ;; (setq props (cdr props)))
449 ;; (setq props (car (cddr event)))
450 ;; (setcar (cddr event)
451 ;; (append props (list (list prop nil new-value)))))))
453 (defun icalendar--get-children (node name)
454 "Return all children of the given NODE which have a name NAME.
455 For instance the VCALENDAR node can have VEVENT children as well as VTODO
458 (children (cadr (cddr node))))
459 (when (eq (car node) name)
461 ;;(message "%s" node)
466 (icalendar--get-children n name))
470 (setq result (append result subresult))
471 (setq result subresult)))))
475 (defun icalendar--all-events (icalendar)
476 "Return the list of all existing events in the given ICALENDAR."
479 (setq result (append (icalendar--get-children elt 'VEVENT)
481 (nreverse icalendar))
484 (defun icalendar--split-value (value-string)
485 "Split VALUE-STRING at ';='."
487 param-name param-value)
490 (set-buffer (get-buffer-create " *icalendar-work*"))
491 (set-buffer-modified-p nil)
493 (insert value-string)
494 (goto-char (point-min))
497 "\\([A-Za-z0-9-]+\\)=\\(\\([^;:]+\\)\\|\"\\([^\"]+\\)\"\\);?"
499 (setq param-name (intern (match-string 1)))
500 (setq param-value (match-string 2))
502 (append result (list (list param-name param-value)))))))
505 (defun icalendar--convert-tz-offset (alist dst-p)
506 "Return a cons of two strings representing a timezone start.
507 ALIST is an alist entry from a VTIMEZONE, like STANDARD.
508 DST-P is non-nil if this is for daylight savings time.
509 The strings are suitable for assembling into a TZ variable."
510 (let* ((offsetto (car (cddr (assq 'TZOFFSETTO alist))))
511 (offsetfrom (car (cddr (assq 'TZOFFSETFROM alist))))
512 (rrule-value (car (cddr (assq 'RRULE alist))))
513 (dtstart (car (cddr (assq 'DTSTART alist))))
514 (no-dst (equal offsetto offsetfrom)))
515 ;; FIXME: for now we only handle RRULE and not RDATE here.
516 (when (and offsetto dtstart (or rrule-value no-dst))
517 (let* ((rrule (icalendar--split-value rrule-value))
518 (freq (cadr (assq 'FREQ rrule)))
519 (bymonth (cadr (assq 'BYMONTH rrule)))
520 (byday (cadr (assq 'BYDAY rrule))))
521 ;; FIXME: we don't correctly handle WKST here.
522 (if (or no-dst (and (string= freq "YEARLY") bymonth))
526 (if dst-p "DST" "STD")
527 ;; For TZ, OFFSET is added to the local time. So,
528 ;; invert the values.
529 (if (eq (aref offsetto 0) ?-) "+" "-")
530 (substring offsetto 1 3)
532 (substring offsetto 3 5))
534 (let* ((day (if no-dst
536 (icalendar--get-weekday-number (substring byday -2))))
541 (substring byday 0 -2)))))
542 ;; "Translate" the iCalendar way to specify the last
543 ;; (sun|mon|...)day in month to the tzset way.
544 (if (string= week "-1") ; last day as iCalendar calls it
545 (setq week "5")) ; last day as tzset calls it
546 (when no-dst (setq bymonth "1"))
547 (concat "M" bymonth "." week "." (if (eq day -1) "0"
551 (substring dtstart -6 -4)
553 (substring dtstart -4 -2)
555 (substring dtstart -2)))))))))
557 (defun icalendar--parse-vtimezone (alist)
558 "Turn a VTIMEZONE ALIST into a cons (ID . TZ-STRING).
559 Return nil if timezone cannot be parsed."
560 (let* ((tz-id (icalendar--convert-string-for-import
561 (icalendar--get-event-property alist 'TZID)))
562 (daylight (cadr (cdar (icalendar--get-children alist 'DAYLIGHT))))
563 (day (and daylight (icalendar--convert-tz-offset daylight t)))
564 (standard (cadr (cdar (icalendar--get-children alist 'STANDARD))))
565 (std (and standard (icalendar--convert-tz-offset standard nil))))
569 (concat (car std) (car day)
570 "," (cdr day) "," (cdr std))
573 (defun icalendar--convert-all-timezones (icalendar)
574 "Convert all timezones in the ICALENDAR into an alist.
575 Each element of the alist is a cons (ID . TZ-STRING),
576 like `icalendar--parse-vtimezone'."
578 (dolist (zone (icalendar--get-children (car icalendar) 'VTIMEZONE))
579 (setq zone (icalendar--parse-vtimezone zone))
581 (setq result (cons zone result))))
584 (defun icalendar--find-time-zone (prop-list zone-map)
585 "Return a timezone string for the time zone in PROP-LIST, or nil if none.
586 ZONE-MAP is a timezone alist as returned by `icalendar--convert-all-timezones'."
587 (let ((id (plist-get prop-list 'TZID)))
589 (cdr (assoc id zone-map)))))
591 (defun icalendar--decode-isodatetime (isodatetimestring &optional day-shift
593 "Return ISODATETIMESTRING in format like `decode-time'.
594 Converts from ISO-8601 to Emacs representation. If
595 ISODATETIMESTRING specifies UTC time (trailing letter Z) the
596 decoded time is given in the local time zone! If optional
597 parameter DAY-SHIFT is non-nil the result is shifted by DAY-SHIFT
599 ZONE, if provided, is the timezone, in any format understood by `encode-time'.
601 FIXME: multiple comma-separated values should be allowed!"
602 (icalendar--dmsg isodatetimestring)
603 (if isodatetimestring
604 ;; day/month/year must be present
605 (let ((year (read (substring isodatetimestring 0 4)))
606 (month (read (substring isodatetimestring 4 6)))
607 (day (read (substring isodatetimestring 6 8)))
611 (when (> (length isodatetimestring) 12)
612 ;; hour/minute present
613 (setq hour (read (substring isodatetimestring 9 11)))
614 (setq minute (read (substring isodatetimestring 11 13))))
615 (when (> (length isodatetimestring) 14)
617 (setq second (read (substring isodatetimestring 13 15))))
618 (when (and (> (length isodatetimestring) 15)
619 ;; UTC specifier present
620 (char-equal ?Z (aref isodatetimestring 15)))
622 ;; shift if necessary
624 (let ((mdy (calendar-gregorian-from-absolute
625 (+ (calendar-absolute-from-gregorian
626 (list month day year))
628 (setq month (nth 0 mdy))
629 (setq day (nth 1 mdy))
630 (setq year (nth 2 mdy))))
631 ;; create the decoded date-time
634 (decode-time (encode-time second minute hour day month year zone))
636 (message "Cannot decode \"%s\"" isodatetimestring)
637 ;; hope for the best...
638 (list second minute hour day month year 0 nil 0))))
639 ;; isodatetimestring == nil
642 (defun icalendar--decode-isoduration (isodurationstring
643 &optional duration-correction)
644 "Convert ISODURATIONSTRING into format provided by `decode-time'.
645 Converts from ISO-8601 to Emacs representation. If ISODURATIONSTRING
646 specifies UTC time (trailing letter Z) the decoded time is given in
649 Optional argument DURATION-CORRECTION shortens result by one day.
651 FIXME: TZID-attributes are ignored....!
652 FIXME: multiple comma-separated values should be allowed!"
653 (if isodurationstring
658 "\\(\\([0-9]+\\)D\\)" ; days only
660 "\\(\\(\\([0-9]+\\)D\\)?T\\(\\([0-9]+\\)H\\)?" ; opt days
661 "\\(\\([0-9]+\\)M\\)?\\(\\([0-9]+\\)S\\)?\\)" ; mand. time
663 "\\(\\([0-9]+\\)W\\)" ; weeks only
664 "\\)$") isodurationstring)
672 ((match-beginning 2) ;days only
673 (setq days (read (substring isodurationstring
676 (when duration-correction
677 (setq days (1- days))))
678 ((match-beginning 4) ;days and time
679 (if (match-beginning 5)
680 (setq days (* 7 (read (substring isodurationstring
683 (if (match-beginning 7)
684 (setq hours (read (substring isodurationstring
687 (if (match-beginning 9)
688 (setq minutes (read (substring isodurationstring
691 (if (match-beginning 11)
692 (setq seconds (read (substring isodurationstring
695 ((match-beginning 13) ;weeks only
696 (setq days (* 7 (read (substring isodurationstring
699 (list seconds minutes hours days months years)))
700 ;; isodatetimestring == nil
703 (defun icalendar--add-decoded-times (time1 time2)
705 Both times must be given in decoded form. One of these times must be
706 valid (year > 1900 or something)."
707 ;; FIXME: does this function exist already?
708 (decode-time (encode-time
709 (+ (nth 0 time1) (nth 0 time2))
710 (+ (nth 1 time1) (nth 1 time2))
711 (+ (nth 2 time1) (nth 2 time2))
712 (+ (nth 3 time1) (nth 3 time2))
713 (+ (nth 4 time1) (nth 4 time2))
714 (+ (nth 5 time1) (nth 5 time2))
717 ;;(or (nth 6 time1) (nth 6 time2)) ;; FIXME?
720 (defun icalendar--datetime-to-american-date (datetime &optional separator)
721 "Convert the decoded DATETIME to American-style format.
722 Optional argument SEPARATOR gives the separator between month,
723 day, and year. If nil a blank character is used as separator.
724 American format: \"month day year\"."
726 (format "%d%s%d%s%d" (nth 4 datetime) ;month
728 (nth 3 datetime) ;day
730 (nth 5 datetime)) ;year
734 (define-obsolete-function-alias 'icalendar--datetime-to-noneuropean-date
735 'icalendar--datetime-to-american-date "icalendar 0.19")
737 (defun icalendar--datetime-to-european-date (datetime &optional separator)
738 "Convert the decoded DATETIME to European format.
739 Optional argument SEPARATOR gives the separator between month,
740 day, and year. If nil a blank character is used as separator.
741 European format: (day month year).
744 (format "%d%s%d%s%d" (nth 3 datetime) ;day
746 (nth 4 datetime) ;month
748 (nth 5 datetime)) ;year
752 (defun icalendar--datetime-to-iso-date (datetime &optional separator)
753 "Convert the decoded DATETIME to ISO format.
754 Optional argument SEPARATOR gives the separator between month,
755 day, and year. If nil a blank character is used as separator.
756 ISO format: (year month day)."
758 (format "%d%s%d%s%d" (nth 5 datetime) ;year
760 (nth 4 datetime) ;month
762 (nth 3 datetime)) ;day
766 (defun icalendar--datetime-to-diary-date (datetime &optional separator)
767 "Convert the decoded DATETIME to diary format.
768 Optional argument SEPARATOR gives the separator between month,
769 day, and year. If nil a blank character is used as separator.
770 Call icalendar--datetime-to-*-date according to the current
771 calendar date style."
772 (funcall (intern-soft (format "icalendar--datetime-to-%s-date"
773 calendar-date-style))
776 (defun icalendar--datetime-to-colontime (datetime)
777 "Extract the time part of a decoded DATETIME into 24-hour format.
778 Note that this silently ignores seconds."
779 (format "%02d:%02d" (nth 2 datetime) (nth 1 datetime)))
781 (defun icalendar--get-month-number (monthname)
782 "Return the month number for the given MONTHNAME."
785 (m (downcase monthname)))
786 (mapc (lambda (month)
787 (let ((mm (downcase month)))
788 (if (or (string-equal mm m)
789 (string-equal (substring mm 0 3) m))
791 (setq num (1+ num))))
792 calendar-month-name-array))
796 (defun icalendar--get-weekday-number (abbrevweekday)
797 "Return the number for the ABBREVWEEKDAY."
801 (aw (downcase abbrevweekday)))
803 (let ((d (downcase day)))
804 (if (string-equal d aw)
806 (setq num (1+ num))))
807 icalendar--weekday-array)))
811 (defun icalendar--get-weekday-numbers (abbrevweekdays)
812 "Return the list of numbers for the comma-separated ABBREVWEEKDAYS."
815 (weekday-alist (mapcar (lambda (day)
818 (cons (downcase day) num)))
819 icalendar--weekday-array)))
821 (mapcar (lambda (abbrevday)
822 (cdr (assoc abbrevday weekday-alist)))
823 (split-string (downcase abbrevweekdays) ","))))))
825 (defun icalendar--get-weekday-abbrev (weekday)
826 "Return the abbreviated WEEKDAY."
829 (w (downcase weekday)))
831 (let ((d (downcase day)))
832 (if (or (string-equal d w)
833 (string-equal (substring d 0 3) w))
834 (throw 'found (aref icalendar--weekday-array num)))
835 (setq num (1+ num))))
836 calendar-day-name-array))
840 (defun icalendar--date-to-isodate (date &optional day-shift)
841 "Convert DATE to iso-style date.
842 DATE must be a list of the form (month day year).
843 If DAY-SHIFT is non-nil, the result is shifted by DAY-SHIFT days."
844 (let ((mdy (calendar-gregorian-from-absolute
845 (+ (calendar-absolute-from-gregorian date)
847 (format "%04d%02d%02d" (nth 2 mdy) (nth 0 mdy) (nth 1 mdy))))
850 (defun icalendar--datestring-to-isodate (datestring &optional day-shift)
851 "Convert diary-style DATESTRING to iso-style date.
852 If DAY-SHIFT is non-nil, the result is shifted by DAY-SHIFT days
853 -- DAY-SHIFT must be either nil or an integer. This function
854 tries to figure the date style from DATESTRING itself. If that
855 is not possible it uses the current calendar date style."
856 (let ((day -1) month year)
858 (cond ( ;; iso-style numeric date
859 (string-match (concat "\\s-*"
860 "\\([0-9]\\{4\\}\\)[ \t/]\\s-*"
861 "0?\\([1-9][0-9]?\\)[ \t/]\\s-*"
862 "0?\\([1-9][0-9]?\\)")
864 (setq year (read (substring datestring (match-beginning 1)
866 (setq month (read (substring datestring (match-beginning 2)
868 (setq day (read (substring datestring (match-beginning 3)
870 ( ;; non-iso numeric date -- must rely on configured
872 (string-match (concat "\\s-*"
873 "0?\\([1-9][0-9]?\\)[ \t/]\\s-*"
874 "0?\\([1-9][0-9]?\\),?[ \t/]\\s-*"
875 "\\([0-9]\\{4\\}\\)")
877 (setq day (read (substring datestring (match-beginning 1)
879 (setq month (read (substring datestring (match-beginning 2)
881 (setq year (read (substring datestring (match-beginning 3)
883 (if (eq calendar-date-style 'american)
887 ( ;; date contains month names -- iso style
888 (string-match (concat "\\s-*"
889 "\\([0-9]\\{4\\}\\)[ \t/]\\s-*"
890 "\\([A-Za-z][^ ]+\\)[ \t/]\\s-*"
891 "0?\\([123]?[0-9]\\)")
893 (setq year (read (substring datestring (match-beginning 1)
895 (setq month (icalendar--get-month-number
896 (substring datestring (match-beginning 2)
898 (setq day (read (substring datestring (match-beginning 3)
900 ( ;; date contains month names -- european style
901 (string-match (concat "\\s-*"
902 "0?\\([123]?[0-9]\\)[ \t/]\\s-*"
903 "\\([A-Za-z][^ ]+\\)[ \t/]\\s-*"
904 "\\([0-9]\\{4\\}\\)")
906 (setq day (read (substring datestring (match-beginning 1)
908 (setq month (icalendar--get-month-number
909 (substring datestring (match-beginning 2)
911 (setq year (read (substring datestring (match-beginning 3)
913 ( ;; date contains month names -- american style
914 (string-match (concat "\\s-*"
915 "\\([A-Za-z][^ ]+\\)[ \t/]\\s-*"
916 "0?\\([123]?[0-9]\\),?[ \t/]\\s-*"
917 "\\([0-9]\\{4\\}\\)")
919 (setq day (read (substring datestring (match-beginning 2)
921 (setq month (icalendar--get-month-number
922 (substring datestring (match-beginning 1)
924 (setq year (read (substring datestring (match-beginning 3)
929 (let ((mdy (calendar-gregorian-from-absolute
930 (+ (calendar-absolute-from-gregorian (list month day
933 (icalendar--dmsg (format "%04d%02d%02d" (nth 2 mdy) (nth 0 mdy) (nth 1 mdy)))
934 (format "%04d%02d%02d" (nth 2 mdy) (nth 0 mdy) (nth 1 mdy)))
937 (defun icalendar--diarytime-to-isotime (timestring ampmstring)
938 "Convert a time like 9:30pm to an iso-conform string like T213000.
939 In this example the TIMESTRING would be \"9:30\" and the
940 AMPMSTRING would be \"pm\". The minutes may be missing as long
941 as the colon is missing as well, i.e. \"9\" is allowed as
942 TIMESTRING and has the same result as \"9:00\"."
944 (let* ((parts (save-match-data (split-string timestring ":")))
946 (m (if (cdr parts) (cadr parts)
947 (if (> (length h) 2) "" "00")))
948 (starttimenum (read (concat h m))))
949 ;; take care of am/pm style
950 ;; Be sure *not* to convert 12:00pm - 12:59pm to 2400-2459
951 (if (and ampmstring (string= "pm" ampmstring) (< starttimenum 1200))
952 (setq starttimenum (+ starttimenum 1200)))
953 ;; Similar effect with 12:00am - 12:59am (need to convert to 0000-0059)
954 (if (and ampmstring (string= "am" ampmstring) (>= starttimenum 1200))
955 (setq starttimenum (- starttimenum 1200)))
956 (format "T%04d00" starttimenum))
959 (defun icalendar--convert-string-for-export (string)
960 "Escape comma and other critical characters in STRING."
961 (icalendar--rris "," "\\\\," string))
963 (defun icalendar--convert-string-for-import (string)
964 "Remove escape chars for comma, semicolon etc. from STRING."
966 "\\\\n" "\n " (icalendar--rris
967 "\\\\\"" "\"" (icalendar--rris
968 "\\\\;" ";" (icalendar--rris
969 "\\\\," "," string)))))
971 ;; ======================================================================
972 ;; Export -- convert emacs-diary to iCalendar
973 ;; ======================================================================
976 (defun icalendar-export-file (diary-filename ical-filename)
977 "Export diary file to iCalendar format.
978 All diary entries in the file DIARY-FILENAME are converted to iCalendar
979 format. The result is appended to the file ICAL-FILENAME."
980 (interactive "FExport diary data from file: \n\
981 Finto iCalendar file: ")
983 (set-buffer (find-file diary-filename))
984 (icalendar-export-region (point-min) (point-max) ical-filename)))
986 (define-obsolete-function-alias 'icalendar-convert-diary-to-ical
987 'icalendar-export-file "22.1")
989 (defvar icalendar--uid-count 0
990 "Auxiliary counter for creating unique ids.")
992 (defun icalendar--create-uid (entry-full contents)
993 "Construct a unique iCalendar UID for a diary entry.
994 ENTRY-FULL is the full diary entry string. CONTENTS is the
995 current iCalendar object, as a string. Increase
996 `icalendar--uid-count'. Returns the UID string."
997 (let ((uid icalendar-uid-format))
999 ;; Allow other apps (such as org-mode) to create its own uid
1000 (get-text-property 0 'uid entry-full)
1001 (setq uid (get-text-property 0 'uid entry-full))
1002 (setq uid (replace-regexp-in-string
1004 (format "%d" icalendar--uid-count)
1006 (setq icalendar--uid-count (1+ icalendar--uid-count))
1007 (setq uid (replace-regexp-in-string
1009 (format "%d%d%d" (car (current-time))
1010 (cadr (current-time))
1011 (car (cddr (current-time))))
1013 (setq uid (replace-regexp-in-string
1015 (format "%d" (abs (sxhash entry-full))) uid t t))
1016 (setq uid (replace-regexp-in-string
1017 "%u" (or user-login-name "UNKNOWN_USER") uid t t))
1018 (let ((dtstart (if (string-match "^DTSTART[^:]*:\\([0-9]*\\)" contents)
1019 (substring contents (match-beginning 1) (match-end 1))
1021 (setq uid (replace-regexp-in-string "%s" dtstart uid t t))))
1023 ;; Return the UID string
1027 (defun icalendar-export-region (min max ical-filename)
1028 "Export region in diary file to iCalendar format.
1029 All diary entries in the region from MIN to MAX in the current buffer are
1030 converted to iCalendar format. The result is appended to the file
1032 This function attempts to return t if something goes wrong. In this
1033 case an error string which describes all the errors and problems is
1034 written into the buffer `*icalendar-errors*'."
1036 FExport diary data into iCalendar file: ")
1043 (contents-n-summary)
1047 (nonmarker (concat "^" (regexp-quote diary-nonmarking-symbol)
1049 (other-elements nil)
1050 (cns-cons-or-list nil))
1051 ;; prepare buffer with error messages
1052 (save-current-buffer
1053 (set-buffer (get-buffer-create "*icalendar-errors*"))
1059 (while (re-search-forward
1060 ;; possibly ignore hidden entries beginning with "&"
1061 (if icalendar-export-hidden-diary-entries
1062 "^\\([^ \t\n#].+\\)\\(\\(\n[ \t].*\\)*\\)"
1063 "^\\([^ \t\n&#].+\\)\\(\\(\n[ \t].*\\)*\\)") max t)
1064 (setq entry-main (match-string 1))
1065 (if (match-beginning 2)
1066 (setq entry-rest (match-string 2))
1067 (setq entry-rest ""))
1068 (setq entry-full (concat entry-main entry-rest))
1070 (condition-case error-val
1072 (setq cns-cons-or-list
1073 (icalendar--convert-to-ical nonmarker entry-main))
1074 (setq other-elements (icalendar--parse-summary-and-rest
1076 (mapc (lambda (contents-n-summary)
1077 (setq contents (concat (car contents-n-summary)
1079 (cdr contents-n-summary)))
1080 (let ((cla (cdr (assoc 'cla other-elements)))
1081 (des (cdr (assoc 'des other-elements)))
1082 (loc (cdr (assoc 'loc other-elements)))
1083 (org (cdr (assoc 'org other-elements)))
1084 (sta (cdr (assoc 'sta other-elements)))
1085 (sum (cdr (assoc 'sum other-elements)))
1086 (url (cdr (assoc 'url other-elements)))
1087 (uid (cdr (assoc 'uid other-elements))))
1089 (setq contents (concat contents "\nCLASS:" cla)))
1091 (setq contents (concat contents "\nDESCRIPTION:"
1094 (setq contents (concat contents "\nLOCATION:" loc)))
1096 (setq contents (concat contents "\nORGANIZER:"
1099 (setq contents (concat contents "\nSTATUS:" sta)))
1101 ;; (setq contents (concat contents "\nSUMMARY:" sum)))
1103 (setq contents (concat contents "\nURL:" url)))
1105 (setq header (concat "\nBEGIN:VEVENT\nUID:"
1107 (icalendar--create-uid
1108 entry-full contents))))
1109 (setq alarm (icalendar--create-ical-alarm
1110 (cdr contents-n-summary))))
1111 (setq result (concat result header contents alarm
1113 (if (consp cns-cons-or-list)
1114 (list cns-cons-or-list)
1118 (setq found-error t)
1119 (save-current-buffer
1120 (set-buffer (get-buffer-create "*icalendar-errors*"))
1121 (insert (format-message "Error in line %d -- %s: ‘%s’\n"
1122 (count-lines (point-min) (point))
1126 ;; we're done, insert everything into the file
1127 (save-current-buffer
1128 (let ((coding-system-for-write 'utf-8))
1129 (set-buffer (find-file ical-filename))
1130 (goto-char (point-max))
1131 (insert "BEGIN:VCALENDAR")
1132 (insert "\nPRODID:-//Emacs//NONSGML icalendar.el//EN")
1133 (insert "\nVERSION:2.0")
1135 (insert "\nEND:VCALENDAR\n")
1136 ;; save the diary file
1142 (defun icalendar--convert-to-ical (nonmarker entry-main)
1143 "Convert a diary entry to iCalendar format.
1144 NONMARKER is a regular expression matching the start of non-marking
1145 entries. ENTRY-MAIN is the first line of the diary entry."
1147 (unless icalendar-export-sexp-enumerate-all
1149 ;; anniversaries -- %%(diary-anniversary ...)
1150 (icalendar--convert-anniversary-to-ical nonmarker entry-main)
1151 ;; cyclic events -- %%(diary-cyclic ...)
1152 (icalendar--convert-cyclic-to-ical nonmarker entry-main)
1153 ;; diary-date -- %%(diary-date ...)
1154 (icalendar--convert-date-to-ical nonmarker entry-main)
1155 ;; float events -- %%(diary-float ...)
1156 (icalendar--convert-float-to-ical nonmarker entry-main)
1157 ;; block events -- %%(diary-block ...)
1158 (icalendar--convert-block-to-ical nonmarker entry-main)))
1159 ;; other sexp diary entries
1160 (icalendar--convert-sexp-to-ical nonmarker entry-main)
1161 ;; weekly by day -- Monday 8:30 Team meeting
1162 (icalendar--convert-weekly-to-ical nonmarker entry-main)
1163 ;; yearly by day -- 1 May Tag der Arbeit
1164 (icalendar--convert-yearly-to-ical nonmarker entry-main)
1165 ;; "ordinary" events, start and end time given
1167 (icalendar--convert-ordinary-to-ical nonmarker entry-main)
1169 ;; Oops! what's that?
1170 (error "Could not parse entry")))
1172 (defun icalendar--parse-summary-and-rest (summary-and-rest)
1173 "Parse SUMMARY-AND-REST from a diary to fill iCalendar properties.
1176 (if (functionp icalendar-import-format)
1177 ;; can't do anything
1179 ;; split summary-and-rest
1180 (let* ((case-fold-search nil)
1181 (s icalendar-import-format)
1182 (p-cla (or (string-match "%c" icalendar-import-format) -1))
1183 (p-des (or (string-match "%d" icalendar-import-format) -1))
1184 (p-loc (or (string-match "%l" icalendar-import-format) -1))
1185 (p-org (or (string-match "%o" icalendar-import-format) -1))
1186 (p-sum (or (string-match "%s" icalendar-import-format) -1))
1187 (p-sta (or (string-match "%t" icalendar-import-format) -1))
1188 (p-url (or (string-match "%u" icalendar-import-format) -1))
1189 (p-uid (or (string-match "%U" icalendar-import-format) -1))
1190 (p-list (sort (list p-cla p-des p-loc p-org p-sta p-sum p-url p-uid) '<))
1192 pos-cla pos-des pos-loc pos-org pos-sta pos-sum pos-url pos-uid)
1193 (dotimes (i (length p-list))
1194 ;; Use 'ct' to keep track of current position in list
1195 (cond ((and (>= p-cla 0) (= (nth i p-list) p-cla))
1197 (setq pos-cla (* 2 ct)))
1198 ((and (>= p-des 0) (= (nth i p-list) p-des))
1200 (setq pos-des (* 2 ct)))
1201 ((and (>= p-loc 0) (= (nth i p-list) p-loc))
1203 (setq pos-loc (* 2 ct)))
1204 ((and (>= p-org 0) (= (nth i p-list) p-org))
1206 (setq pos-org (* 2 ct)))
1207 ((and (>= p-sta 0) (= (nth i p-list) p-sta))
1209 (setq pos-sta (* 2 ct)))
1210 ((and (>= p-sum 0) (= (nth i p-list) p-sum))
1212 (setq pos-sum (* 2 ct)))
1213 ((and (>= p-url 0) (= (nth i p-list) p-url))
1215 (setq pos-url (* 2 ct)))
1216 ((and (>= p-uid 0) (= (nth i p-list) p-uid))
1218 (setq pos-uid (* 2 ct)))) )
1220 (setq s (icalendar--rris (car ij) (cadr ij) s t t)))
1222 ;; summary must be first! because of %s
1224 (concat "\\(" icalendar-import-format-summary "\\)??"))
1226 (concat "\\(" icalendar-import-format-class "\\)??"))
1228 (concat "\\(" icalendar-import-format-description "\\)??"))
1230 (concat "\\(" icalendar-import-format-location "\\)??"))
1232 (concat "\\(" icalendar-import-format-organizer "\\)??"))
1234 (concat "\\(" icalendar-import-format-status "\\)??"))
1236 (concat "\\(" icalendar-import-format-url "\\)??"))
1238 (concat "\\(" icalendar-import-format-uid "\\)??"))))
1239 ;; Need the \' regexp in order to detect multi-line items
1240 (setq s (concat "\\`"
1241 (icalendar--rris "%s" "\\(.*?\\)" s nil t)
1243 (if (string-match s summary-and-rest)
1244 (let (cla des loc org sta sum url uid)
1245 (if (and pos-sum (match-beginning pos-sum))
1246 (setq sum (substring summary-and-rest
1247 (match-beginning pos-sum)
1248 (match-end pos-sum))))
1249 (if (and pos-cla (match-beginning pos-cla))
1250 (setq cla (substring summary-and-rest
1251 (match-beginning pos-cla)
1252 (match-end pos-cla))))
1253 (if (and pos-des (match-beginning pos-des))
1254 (setq des (substring summary-and-rest
1255 (match-beginning pos-des)
1256 (match-end pos-des))))
1257 (if (and pos-loc (match-beginning pos-loc))
1258 (setq loc (substring summary-and-rest
1259 (match-beginning pos-loc)
1260 (match-end pos-loc))))
1261 (if (and pos-org (match-beginning pos-org))
1262 (setq org (substring summary-and-rest
1263 (match-beginning pos-org)
1264 (match-end pos-org))))
1265 (if (and pos-sta (match-beginning pos-sta))
1266 (setq sta (substring summary-and-rest
1267 (match-beginning pos-sta)
1268 (match-end pos-sta))))
1269 (if (and pos-url (match-beginning pos-url))
1270 (setq url (substring summary-and-rest
1271 (match-beginning pos-url)
1272 (match-end pos-url))))
1273 (if (and pos-uid (match-beginning pos-uid))
1274 (setq uid (substring summary-and-rest
1275 (match-beginning pos-uid)
1276 (match-end pos-uid))))
1277 (list (if cla (cons 'cla cla) nil)
1278 (if des (cons 'des des) nil)
1279 (if loc (cons 'loc loc) nil)
1280 (if org (cons 'org org) nil)
1281 (if sta (cons 'sta sta) nil)
1282 ;;(if sum (cons 'sum sum) nil)
1283 (if url (cons 'url url) nil)
1284 (if uid (cons 'uid uid) nil))))))))
1286 (defun icalendar--create-ical-alarm (summary)
1287 "Return VALARM blocks for the given SUMMARY."
1288 (when icalendar-export-alarms
1289 (let* ((advance-time (car icalendar-export-alarms))
1290 (alarm-specs (cadr icalendar-export-alarms))
1292 (icalendar--do-create-ical-alarm advance-time spec summary))))
1293 (mapconcat fun alarm-specs ""))))
1295 (defun icalendar--do-create-ical-alarm (advance-time alarm-spec summary)
1296 "Return a VALARM block.
1297 Argument ADVANCE-TIME is a number giving the time when the alarm
1298 fires (minutes before the respective event). Argument ALARM-SPEC
1299 is a list which must be one of '(audio), '(display) or
1300 '(email (ADDRESS1 ...)), see `icalendar-export-alarms'. Argument
1301 SUMMARY is a string which contains a short description for the
1303 (let* ((action (car alarm-spec))
1304 (act (format "\nACTION:%s"
1305 (cdr (assoc action '((audio . "AUDIO")
1306 (display . "DISPLAY")
1307 (email . "EMAIL"))))))
1308 (tri (format "\nTRIGGER:-PT%dM" advance-time))
1309 (des (if (memq action '(display email))
1310 (format "\nDESCRIPTION:%s" summary)
1312 (sum (if (eq action 'email)
1313 (format "\nSUMMARY:%s" summary)
1315 (att (if (eq action 'email)
1316 (mapconcat (lambda (i)
1317 (format "\nATTENDEE:MAILTO:%s" i))
1318 (cadr alarm-spec) "")
1321 (concat "\nBEGIN:VALARM" act tri des sum att "\nEND:VALARM")))
1323 ;; subroutines for icalendar-export-region
1324 (defun icalendar--convert-ordinary-to-ical (nonmarker entry-main)
1325 "Convert \"ordinary\" diary entry to iCalendar format.
1326 NONMARKER is a regular expression matching the start of non-marking
1327 entries. ENTRY-MAIN is the first line of the diary entry."
1330 "\\([^ /]+[ /]+[^ /]+[ /]+[^ ]+\\)\\s-*" ; date
1331 "\\(\\([0-9][0-9]?\\(:[0-9][0-9]\\)?\\)\\([ap]m\\)?" ; start time
1333 "-\\([0-9][0-9]?\\(:[0-9][0-9]\\)?\\)\\([ap]m\\)?\\)?" ; end time
1335 "\\s-*\\(.*?\\) ?$")
1337 (let* ((datetime (substring entry-main (match-beginning 1)
1339 (startisostring (icalendar--datestring-to-isodate
1341 (endisostring (icalendar--datestring-to-isodate
1344 (starttimestring (icalendar--diarytime-to-isotime
1345 (if (match-beginning 3)
1346 (substring entry-main
1350 (if (match-beginning 5)
1351 (substring entry-main
1355 (endtimestring (icalendar--diarytime-to-isotime
1356 (if (match-beginning 7)
1357 (substring entry-main
1361 (if (match-beginning 9)
1362 (substring entry-main
1366 (summary (icalendar--convert-string-for-export
1367 (substring entry-main (match-beginning 10)
1369 (icalendar--dmsg "ordinary %s" entry-main)
1371 (unless startisostring
1372 (error "Could not parse date"))
1374 ;; If only start-date is specified, then end-date is next day,
1375 ;; otherwise it is same day.
1376 (setq endisostring1 (if starttimestring
1380 (when starttimestring
1381 (unless endtimestring
1383 (read (icalendar--rris "^T0?" ""
1386 ;; Case: ends on same day
1387 (setq endtimestring (format "T%06d"
1389 ;; Case: ends on next day
1390 (setq endtimestring (format "T%06d"
1392 (setq endisostring1 endisostring)) )))
1394 (cons (concat "\nDTSTART;"
1395 (if starttimestring "VALUE=DATE-TIME:"
1398 (or starttimestring "")
1400 (if endtimestring "VALUE=DATE-TIME:"
1403 (or endtimestring ""))
1408 (defun icalendar-first-weekday-of-year (abbrevweekday year)
1409 "Find the first ABBREVWEEKDAY in a given YEAR.
1410 Returns day number."
1411 (let* ((day-of-week-jan01 (calendar-day-of-week (list 1 1 year)))
1413 (- (icalendar--get-weekday-number abbrevweekday)
1414 day-of-week-jan01))))
1415 (cond ((<= result 0)
1416 (setq result (+ result 7)))
1418 (setq result (- result 7))))
1421 (defun icalendar--convert-weekly-to-ical (nonmarker entry-main)
1422 "Convert weekly diary entry to iCalendar format.
1423 NONMARKER is a regular expression matching the start of non-marking
1424 entries. ENTRY-MAIN is the first line of the diary entry."
1425 (if (and (string-match (concat nonmarker
1427 "\\(\\([0-9][0-9]?:[0-9][0-9]\\)"
1430 "\\([0-9][0-9]?:[0-9][0-9]\\)"
1433 "\\s-*\\(.*?\\) ?$")
1435 (icalendar--get-weekday-abbrev
1436 (substring entry-main (match-beginning 1)
1438 (let* ((day (icalendar--get-weekday-abbrev
1439 (substring entry-main (match-beginning 1)
1441 (starttimestring (icalendar--diarytime-to-isotime
1442 (if (match-beginning 3)
1443 (substring entry-main
1447 (if (match-beginning 4)
1448 (substring entry-main
1452 (endtimestring (icalendar--diarytime-to-isotime
1453 (if (match-beginning 6)
1454 (substring entry-main
1458 (if (match-beginning 7)
1459 (substring entry-main
1463 (summary (icalendar--convert-string-for-export
1464 (substring entry-main (match-beginning 8)
1466 (icalendar--dmsg "weekly %s" entry-main)
1468 (when starttimestring
1469 (unless endtimestring
1471 (icalendar--rris "^T0?" ""
1473 (setq endtimestring (format "T%06d"
1475 (cons (concat "\nDTSTART;"
1479 ;; Find the first requested weekday of the
1481 (funcall 'format "%04d%02d%02d"
1482 icalendar-recurring-start-year 1
1483 (icalendar-first-weekday-of-year
1484 day icalendar-recurring-start-year))
1485 (or starttimestring "")
1490 (funcall 'format "%04d%02d%02d"
1491 ;; end is non-inclusive!
1492 icalendar-recurring-start-year 1
1493 (+ (icalendar-first-weekday-of-year
1494 day icalendar-recurring-start-year)
1495 (if endtimestring 0 1)))
1496 (or endtimestring "")
1497 "\nRRULE:FREQ=WEEKLY;INTERVAL=1;BYDAY="
1503 (defun icalendar--convert-yearly-to-ical (nonmarker entry-main)
1504 "Convert yearly diary entry to iCalendar format.
1505 NONMARKER is a regular expression matching the start of non-marking
1506 entries. ENTRY-MAIN is the first line of the diary entry."
1507 (if (string-match (concat nonmarker
1508 (if (eq calendar-date-style 'european)
1509 "\\([0-9]+[0-9]?\\)\\s-+\\([a-z]+\\)\\s-+"
1510 "\\([a-z]+\\)\\s-+\\([0-9]+[0-9]?\\)\\s-+")
1512 "\\(\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?"
1514 "-\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?\\)?"
1516 "\\s-*\\([^0-9]+.*?\\) ?$" ; must not match years
1519 (let* ((daypos (if (eq calendar-date-style 'european) 1 2))
1520 (monpos (if (eq calendar-date-style 'european) 2 1))
1521 (day (read (substring entry-main
1522 (match-beginning daypos)
1523 (match-end daypos))))
1524 (month (icalendar--get-month-number
1525 (substring entry-main
1526 (match-beginning monpos)
1527 (match-end monpos))))
1528 (starttimestring (icalendar--diarytime-to-isotime
1529 (if (match-beginning 4)
1530 (substring entry-main
1534 (if (match-beginning 5)
1535 (substring entry-main
1539 (endtimestring (icalendar--diarytime-to-isotime
1540 (if (match-beginning 7)
1541 (substring entry-main
1545 (if (match-beginning 8)
1546 (substring entry-main
1550 (summary (icalendar--convert-string-for-export
1551 (substring entry-main (match-beginning 9)
1553 (icalendar--dmsg "yearly %s" entry-main)
1555 (when starttimestring
1556 (unless endtimestring
1558 (icalendar--rris "^T0?" ""
1560 (setq endtimestring (format "T%06d"
1562 (cons (concat "\nDTSTART;"
1563 (if starttimestring "VALUE=DATE-TIME:"
1565 (format "1900%02d%02d" month day)
1566 (or starttimestring "")
1568 (if endtimestring "VALUE=DATE-TIME:"
1570 ;; end is not included! shift by one day
1571 (icalendar--date-to-isodate
1572 (list month day 1900)
1573 (if endtimestring 0 1))
1574 (or endtimestring "")
1575 "\nRRULE:FREQ=YEARLY;INTERVAL=1;BYMONTH="
1583 (defun icalendar--convert-sexp-to-ical (nonmarker entry-main &optional start)
1584 "Convert sexp diary entry to iCalendar format.
1585 Enumerate the evaluated sexp entry for the next
1586 `icalendar-export-sexp-enumeration-days' days. NONMARKER is a
1587 regular expression matching the start of non-marking entries.
1588 ENTRY-MAIN is the first line of the diary entry.
1590 Optional argument START determines the first day of the
1591 enumeration, given as a time value, in same format as returned by
1592 `current-time' -- used for test purposes."
1593 (cond ((string-match (concat nonmarker
1594 "%%(and \\(([^)]+)\\))\\(\\s-*.*?\\) ?$")
1596 ;; simple sexp entry as generated by icalendar.el: strip off the
1597 ;; unnecessary (and)
1598 (icalendar--dmsg "diary-sexp from icalendar.el %s" entry-main)
1599 (icalendar--convert-to-ical
1602 (substring entry-main (match-beginning 1) (match-end 1))
1603 (substring entry-main (match-beginning 2) (match-end 2)))))
1604 ((string-match (concat nonmarker
1605 "%%\\(([^)]+)\\)\\s-*\\(.*\\)")
1607 ;; regular sexp entry
1608 (icalendar--dmsg "diary-sexp %s" entry-main)
1609 (let ((p1 (substring entry-main (match-beginning 1) (match-end 1)))
1610 (p2 (substring entry-main (match-beginning 2) (match-end 2)))
1611 (now (or start (current-time))))
1615 (let* ((day (decode-time (time-add now
1617 (* offset 60 60 24)))))
1621 (se (diary-sexp-entry p1 p2 (list m d y)))
1622 (see (cond ((stringp se) se)
1623 ((consp se) (cdr se))
1628 (let ((calendar-date-style 'iso))
1629 (icalendar--convert-ordinary-to-ical
1630 nonmarker (format "%4d/%02d/%02d %s" y m d see))))
1632 (error "Unsupported Sexp-entry: %s"
1635 0 (- icalendar-export-sexp-enumeration-days 1))))))
1640 (defun icalendar--convert-block-to-ical (nonmarker entry-main)
1641 "Convert block diary entry to iCalendar format.
1642 NONMARKER is a regular expression matching the start of non-marking
1643 entries. ENTRY-MAIN is the first line of the diary entry."
1644 (if (string-match (concat nonmarker
1645 "%%(diary-block \\([^ /]+[ /]+[^ /]+[ /]+[^ ]+\\)"
1646 " +\\([^ /]+[ /]+[^ /]+[ /]+[^ ]+\\))\\s-*"
1647 "\\(\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?"
1649 "-\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?\\)?"
1651 "\\s-*\\(.*?\\) ?$")
1653 (let* ((startstring (substring entry-main
1656 (endstring (substring entry-main
1659 (startisostring (icalendar--datestring-to-isodate
1661 (endisostring (icalendar--datestring-to-isodate
1663 (endisostring+1 (icalendar--datestring-to-isodate
1665 (starttimestring (icalendar--diarytime-to-isotime
1666 (if (match-beginning 4)
1667 (substring entry-main
1671 (if (match-beginning 5)
1672 (substring entry-main
1676 (endtimestring (icalendar--diarytime-to-isotime
1677 (if (match-beginning 7)
1678 (substring entry-main
1682 (if (match-beginning 8)
1683 (substring entry-main
1687 (summary (icalendar--convert-string-for-export
1688 (substring entry-main (match-beginning 9)
1690 (icalendar--dmsg "diary-block %s" entry-main)
1691 (when starttimestring
1692 (unless endtimestring
1694 (read (icalendar--rris "^T0?" ""
1696 (setq endtimestring (format "T%06d"
1699 ;; with time -> write rrule
1700 (cons (concat "\nDTSTART;VALUE=DATE-TIME:"
1703 "\nDTEND;VALUE=DATE-TIME:"
1706 "\nRRULE:FREQ=DAILY;INTERVAL=1;UNTIL="
1709 ;; no time -> write long event
1710 (cons (concat "\nDTSTART;VALUE=DATE:" startisostring
1711 "\nDTEND;VALUE=DATE:" endisostring+1)
1716 (defun icalendar--convert-float-to-ical (nonmarker entry-main)
1717 "Convert float diary entry to iCalendar format -- partially unsupported!
1719 FIXME! DAY from diary-float yet unimplemented.
1721 NONMARKER is a regular expression matching the start of non-marking
1722 entries. ENTRY-MAIN is the first line of the diary entry."
1723 (if (string-match (concat nonmarker "%%\\((diary-float .+\\) ?$") entry-main)
1725 (insert (match-string 1 entry-main))
1726 (goto-char (point-min))
1727 (let* ((sexp (read (current-buffer))) ;using `read' here
1729 ;matching, esp. with
1732 (month (nth 1 sexp))
1733 (dayname (nth 2 sexp))
1737 (replace-regexp-in-string
1738 "\\(^\s+\\|\s+$\\)" ""
1739 (buffer-substring (point) (point-max)))))
1743 (icalendar--dmsg "diary-float %s" entry-main)
1744 (error "Don't know if or how to implement day in ‘diary-float’")))
1747 ;;Start today (yes this is an arbitrary choice):
1748 "\nDTSTART;VALUE=DATE:"
1749 (format-time-string "%Y%m%d")
1750 ;;BUT remove today if `diary-float'
1751 ;;expression does not hold true for today:
1753 (null (let ((date (calendar-current-date))
1755 (diary-float month dayname n)))
1757 "\nEXDATE;VALUE=DATE:"
1758 (format-time-string "%Y%m%d")))
1760 (if (or (numberp month) (listp month))
1761 "FREQ=YEARLY;BYMONTH="
1767 (number-to-string m))
1771 (number-to-string month))
1773 (number-to-string n)
1774 (aref icalendar--weekday-array dayname))
1779 (defun icalendar--convert-date-to-ical (nonmarker entry-main)
1780 "Convert `diary-date' diary entry to iCalendar format -- unsupported!
1784 NONMARKER is a regular expression matching the start of non-marking
1785 entries. ENTRY-MAIN is the first line of the diary entry."
1786 (if (string-match (concat nonmarker
1787 "%%(diary-date \\([^)]+\\))\\s-*\\(.*?\\) ?$")
1790 (icalendar--dmsg "diary-date %s" entry-main)
1791 (error "‘diary-date’ is not supported yet"))
1795 (defun icalendar--convert-cyclic-to-ical (nonmarker entry-main)
1796 "Convert `diary-cyclic' diary entry to iCalendar format.
1797 NONMARKER is a regular expression matching the start of non-marking
1798 entries. ENTRY-MAIN is the first line of the diary entry."
1799 (if (string-match (concat nonmarker
1800 "%%(diary-cyclic \\([^ ]+\\) +"
1801 "\\([^ /]+[ /]+[^ /]+[ /]+[^ ]+\\))\\s-*"
1802 "\\(\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?"
1804 "-\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?\\)?"
1806 "\\s-*\\(.*?\\) ?$")
1808 (let* ((frequency (substring entry-main (match-beginning 1)
1810 (datetime (substring entry-main (match-beginning 2)
1812 (startisostring (icalendar--datestring-to-isodate
1814 (endisostring (icalendar--datestring-to-isodate
1816 (endisostring+1 (icalendar--datestring-to-isodate
1818 (starttimestring (icalendar--diarytime-to-isotime
1819 (if (match-beginning 4)
1820 (substring entry-main
1824 (if (match-beginning 5)
1825 (substring entry-main
1829 (endtimestring (icalendar--diarytime-to-isotime
1830 (if (match-beginning 7)
1831 (substring entry-main
1835 (if (match-beginning 8)
1836 (substring entry-main
1840 (summary (icalendar--convert-string-for-export
1841 (substring entry-main (match-beginning 9)
1843 (icalendar--dmsg "diary-cyclic %s" entry-main)
1844 (when starttimestring
1845 (unless endtimestring
1847 (read (icalendar--rris "^T0?" ""
1849 (setq endtimestring (format "T%06d"
1851 (cons (concat "\nDTSTART;"
1852 (if starttimestring "VALUE=DATE-TIME:"
1855 (or starttimestring "")
1857 (if endtimestring "VALUE=DATE-TIME:"
1859 (if endtimestring endisostring endisostring+1)
1860 (or endtimestring "")
1861 "\nRRULE:FREQ=DAILY;INTERVAL=" frequency
1862 ;; strange: korganizer does not expect
1863 ;; BYSOMETHING here...
1869 (defun icalendar--convert-anniversary-to-ical (nonmarker entry-main)
1870 "Convert `diary-anniversary' diary entry to iCalendar format.
1871 NONMARKER is a regular expression matching the start of non-marking
1872 entries. ENTRY-MAIN is the first line of the diary entry."
1873 (if (string-match (concat nonmarker
1874 "%%(diary-anniversary \\([^)]+\\))\\s-*"
1875 "\\(\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?"
1877 "-\\([0-9][0-9]?:[0-9][0-9]\\)\\([ap]m\\)?\\)?"
1879 "\\s-*\\(.*?\\) ?$")
1881 (let* ((datetime (substring entry-main (match-beginning 1)
1883 (startisostring (icalendar--datestring-to-isodate
1885 (endisostring (icalendar--datestring-to-isodate
1887 (starttimestring (icalendar--diarytime-to-isotime
1888 (if (match-beginning 3)
1889 (substring entry-main
1893 (if (match-beginning 4)
1894 (substring entry-main
1898 (endtimestring (icalendar--diarytime-to-isotime
1899 (if (match-beginning 6)
1900 (substring entry-main
1904 (if (match-beginning 7)
1905 (substring entry-main
1909 (summary (icalendar--convert-string-for-export
1910 (substring entry-main (match-beginning 8)
1912 (icalendar--dmsg "diary-anniversary %s" entry-main)
1913 (when starttimestring
1914 (unless endtimestring
1916 (read (icalendar--rris "^T0?" ""
1918 (setq endtimestring (format "T%06d"
1920 (cons (concat "\nDTSTART;"
1921 (if starttimestring "VALUE=DATE-TIME:"
1924 (or starttimestring "")
1926 (if endtimestring "VALUE=DATE-TIME:"
1929 (or endtimestring "")
1930 "\nRRULE:FREQ=YEARLY;INTERVAL=1"
1931 ;; the following is redundant,
1932 ;; but korganizer seems to expect this... ;(
1933 ;; and evolution doesn't understand it... :(
1934 ;; so... who is wrong?!
1936 (substring startisostring 4 6)
1938 (substring startisostring 6 8))
1943 ;; ======================================================================
1944 ;; Import -- convert iCalendar to emacs-diary
1945 ;; ======================================================================
1948 (defun icalendar-import-file (ical-filename diary-filename
1949 &optional non-marking)
1950 "Import an iCalendar file and append to a diary file.
1951 Argument ICAL-FILENAME output iCalendar file.
1952 Argument DIARY-FILENAME input `diary-file'.
1953 Optional argument NON-MARKING determines whether events are created as
1954 non-marking or not."
1955 (interactive "fImport iCalendar data from file: \n\
1958 ;; clean up the diary file
1959 (save-current-buffer
1960 ;; now load and convert from the ical file
1961 (set-buffer (find-file ical-filename))
1962 (icalendar-import-buffer diary-filename t non-marking)))
1965 (defun icalendar-import-buffer (&optional diary-file do-not-ask
1967 "Extract iCalendar events from current buffer.
1969 This function searches the current buffer for the first iCalendar
1970 object, reads it and adds all VEVENT elements to the diary
1973 It will ask for each appointment whether to add it to the diary
1974 unless DO-NOT-ASK is non-nil. When called interactively,
1975 DO-NOT-ASK is nil, so that you are asked for each event.
1977 NON-MARKING determines whether diary events are created as
1980 Return code t means that importing worked well, return code nil
1981 means that an error has occurred. Error messages will be in the
1982 buffer `*icalendar-errors*'."
1984 (save-current-buffer
1986 (message "Preparing iCalendar...")
1987 (set-buffer (icalendar--get-unfolded-buffer (current-buffer)))
1988 (goto-char (point-min))
1989 (message "Preparing iCalendar...done")
1990 (if (re-search-forward "^BEGIN:VCALENDAR\\s-*$" nil t)
1991 (let (ical-contents ical-errors)
1993 (message "Reading iCalendar...")
1995 (setq ical-contents (icalendar--read-element nil nil))
1996 (message "Reading iCalendar...done")
1998 (message "Converting iCalendar...")
1999 (setq ical-errors (icalendar--convert-ical-to-diary
2001 diary-file do-not-ask non-marking))
2003 ;; save the diary file if it is visited already
2004 (let ((b (find-buffer-visiting diary-file)))
2006 (save-current-buffer
2009 (message "Converting iCalendar...done")
2010 ;; return t if no error occurred
2013 "Current buffer does not contain iCalendar contents!")
2014 ;; return nil, i.e. import did not work
2017 (define-obsolete-function-alias 'icalendar-extract-ical-from-buffer
2018 'icalendar-import-buffer "22.1")
2020 (defun icalendar--format-ical-event (event)
2021 "Create a string representation of an iCalendar EVENT."
2022 (if (functionp icalendar-import-format)
2023 (funcall icalendar-import-format event)
2024 (let ((string icalendar-import-format)
2025 (case-fold-search nil)
2027 '(("%c" CLASS icalendar-import-format-class)
2028 ("%d" DESCRIPTION icalendar-import-format-description)
2029 ("%l" LOCATION icalendar-import-format-location)
2030 ("%o" ORGANIZER icalendar-import-format-organizer)
2031 ("%s" SUMMARY icalendar-import-format-summary)
2032 ("%t" STATUS icalendar-import-format-status)
2033 ("%u" URL icalendar-import-format-url)
2034 ("%U" UID icalendar-import-format-uid))))
2035 ;; convert the specifiers in the format string
2037 (let* ((spec (car i))
2039 (format (car (cddr i)))
2040 (contents (icalendar--get-event-property event prop))
2041 (formatted-contents ""))
2042 (when (and contents (> (length contents) 0))
2043 (setq formatted-contents
2044 (icalendar--rris "%s"
2045 (icalendar--convert-string-for-import
2047 (symbol-value format)
2049 (setq string (icalendar--rris spec
2056 (defun icalendar--convert-ical-to-diary (ical-list diary-file
2057 &optional do-not-ask
2059 "Convert iCalendar data to an Emacs diary file.
2060 Import VEVENTS from the iCalendar object ICAL-LIST and saves them to a
2061 DIARY-FILE. If DO-NOT-ASK is nil the user is asked for each event
2062 whether to actually import it. NON-MARKING determines whether diary
2063 events are created as non-marking.
2064 This function attempts to return t if something goes wrong. In this
2065 case an error string which describes all the errors and problems is
2066 written into the buffer `*icalendar-errors*'."
2067 (let* ((ev (icalendar--all-events ical-list))
2071 (zone-map (icalendar--convert-all-timezones ical-list))
2073 ;; step through all events/appointments
2078 (condition-case error-val
2079 (let* ((dtstart (icalendar--get-event-property e 'DTSTART))
2080 (dtstart-zone (icalendar--find-time-zone
2081 (icalendar--get-event-property-attributes
2084 (dtstart-dec (icalendar--decode-isodatetime dtstart nil
2086 (start-d (icalendar--datetime-to-diary-date
2088 (start-t (icalendar--datetime-to-colontime dtstart-dec))
2089 (dtend (icalendar--get-event-property e 'DTEND))
2090 (dtend-zone (icalendar--find-time-zone
2091 (icalendar--get-event-property-attributes
2094 (dtend-dec (icalendar--decode-isodatetime dtend
2096 (dtend-1-dec (icalendar--decode-isodatetime dtend -1
2101 (summary (icalendar--convert-string-for-import
2102 (or (icalendar--get-event-property e 'SUMMARY)
2104 (rrule (icalendar--get-event-property e 'RRULE))
2105 (rdate (icalendar--get-event-property e 'RDATE))
2106 (duration (icalendar--get-event-property e 'DURATION)))
2107 (icalendar--dmsg "%s: ‘%s’" start-d summary)
2108 ;; check whether start-time is missing
2111 (cadr (icalendar--get-event-property-attributes
2116 (let ((dtend-dec-d (icalendar--add-decoded-times
2118 (icalendar--decode-isoduration duration)))
2119 (dtend-1-dec-d (icalendar--add-decoded-times
2121 (icalendar--decode-isoduration duration
2123 (if (and dtend-dec (not (eq dtend-dec dtend-dec-d)))
2124 (message "Inconsistent endtime and duration for %s"
2126 (setq dtend-dec dtend-dec-d)
2127 (setq dtend-1-dec dtend-1-dec-d)))
2128 (setq end-d (if dtend-dec
2129 (icalendar--datetime-to-diary-date dtend-dec)
2131 (setq end-1-d (if dtend-1-dec
2132 (icalendar--datetime-to-diary-date dtend-1-dec)
2134 (setq end-t (if (and
2138 (icalendar--get-event-property-attributes
2141 (icalendar--datetime-to-colontime dtend-dec)
2143 (icalendar--dmsg "start-d: %s, end-d: %s" start-d end-d)
2148 (icalendar--convert-recurring-to-diary e dtstart-dec start-t
2152 (icalendar--dmsg "rdate event")
2153 (setq diary-string "")
2154 (mapc (lambda (datestring)
2156 (concat diary-string
2157 (format "......"))))
2158 (icalendar--split-value rdate)))
2159 ;; non-recurring event
2161 ((not (string= start-d end-d))
2163 (icalendar--convert-non-recurring-all-day-to-diary
2167 ((and start-t (or (not end-t)
2168 (not (string= start-t end-t))))
2170 (icalendar--convert-non-recurring-not-all-day-to-diary
2171 e dtstart-dec dtend-dec start-t end-t))
2175 (icalendar--dmsg "all day event")
2176 (setq diary-string (icalendar--datetime-to-diary-date
2179 ;; add all other elements unless the user doesn't want to have
2184 (concat diary-string " "
2185 (icalendar--format-ical-event e)))
2186 (if do-not-ask (setq summary nil))
2187 ;; add entry to diary and store actual name of diary
2188 ;; file (in case it was nil)
2190 (icalendar--add-diary-entry diary-string diary-file
2191 non-marking summary)))
2193 (setq found-error t)
2195 (format "%s\nCannot handle this event:%s"
2197 ;; FIXME: inform user about ignored event properties
2200 (message "Ignoring event \"%s\"" e)
2201 (setq found-error t)
2202 (setq error-string (format "%s\n%s\nCannot handle this event: %s"
2203 error-val error-string e))
2204 (message "%s" error-string))))
2206 ;; insert final newline
2208 (let ((b (find-buffer-visiting diary-file)))
2210 (save-current-buffer
2212 (goto-char (point-max))
2215 (save-current-buffer
2216 (set-buffer (get-buffer-create "*icalendar-errors*"))
2218 (insert error-string)))
2219 (message "Converting iCalendar...done")
2222 ;; subroutines for importing
2223 (defun icalendar--convert-recurring-to-diary (e dtstart-dec start-t end-t)
2224 "Convert recurring iCalendar event E to diary format.
2226 DTSTART-DEC is the DTSTART property of E.
2227 START-T is the event's start time in diary format.
2228 END-T is the event's end time in diary format."
2229 (icalendar--dmsg "recurring event")
2230 (let* ((rrule (icalendar--get-event-property e 'RRULE))
2231 (rrule-props (icalendar--split-value rrule))
2232 (frequency (cadr (assoc 'FREQ rrule-props)))
2233 (until (cadr (assoc 'UNTIL rrule-props)))
2234 (count (cadr (assoc 'COUNT rrule-props)))
2235 (interval (read (or (cadr (assoc 'INTERVAL rrule-props)) "1")))
2236 (dtstart-conv (icalendar--datetime-to-diary-date dtstart-dec))
2237 (until-conv (icalendar--datetime-to-diary-date
2238 (icalendar--decode-isodatetime until)))
2239 (until-1-conv (icalendar--datetime-to-diary-date
2240 (icalendar--decode-isodatetime until -1)))
2243 ;; FIXME FIXME interval!!!!!!!!!!!!!
2247 (message "Must not have UNTIL and COUNT -- ignoring COUNT element!")
2249 (cond ((string-equal frequency "DAILY")
2250 (setq until (icalendar--add-decoded-times
2252 (list 0 0 0 (* (read count) interval) 0 0)))
2253 (setq until-1 (icalendar--add-decoded-times
2255 (list 0 0 0 (* (- (read count) 1) interval)
2258 ((string-equal frequency "WEEKLY")
2259 (setq until (icalendar--add-decoded-times
2261 (list 0 0 0 (* (read count) 7 interval) 0 0)))
2262 (setq until-1 (icalendar--add-decoded-times
2264 (list 0 0 0 (* (- (read count) 1) 7
2267 ((string-equal frequency "MONTHLY")
2268 (setq until (icalendar--add-decoded-times
2269 dtstart-dec (list 0 0 0 0 (* (- (read count) 1)
2271 (setq until-1 (icalendar--add-decoded-times
2272 dtstart-dec (list 0 0 0 0 (* (- (read count) 1)
2275 ((string-equal frequency "YEARLY")
2276 (setq until (icalendar--add-decoded-times
2277 dtstart-dec (list 0 0 0 0 0 (* (- (read count) 1)
2279 (setq until-1 (icalendar--add-decoded-times
2281 (list 0 0 0 0 0 (* (- (read count) 1)
2285 (message "Cannot handle COUNT attribute for ‘%s’ events."
2287 (setq until-conv (icalendar--datetime-to-diary-date until))
2288 (setq until-1-conv (icalendar--datetime-to-diary-date until-1))
2291 (cond ((string-equal frequency "WEEKLY")
2292 (let* ((byday (cadr (assoc 'BYDAY rrule-props)))
2294 (icalendar--get-weekday-numbers byday))
2296 (when (> (length weekdays) 1)
2297 (format "(memq (calendar-day-of-week date) '%s) "
2301 ;; weekly and all-day
2302 (icalendar--dmsg "weekly all-day")
2308 "(diary-block %s %s))")
2310 (format "(diary-cyclic %d %s) "
2314 (if count until-1-conv until-conv)
2317 (format "%%%%(and %s(diary-cyclic %d %s))"
2318 (or weekday-clause "")
2319 (if weekday-clause 1 (* interval 7))
2321 ;; weekly and not all-day
2322 (icalendar--dmsg "weekly not-all-day")
2328 "(diary-block %s %s)) "
2331 (format "(diary-cyclic %d %s) "
2337 (if end-t "-" "") (or end-t "")))
2340 ;; DTSTART;VALUE=DATE-TIME:20030919T090000
2341 ;; DTEND;VALUE=DATE-TIME:20030919T113000
2344 "%%%%(and %s(diary-cyclic %d %s)) %s%s%s"
2345 (or weekday-clause "")
2346 (if weekday-clause 1 (* interval 7))
2349 (if end-t "-" "") (or end-t "")))))))
2351 ((string-equal frequency "YEARLY")
2352 (icalendar--dmsg "yearly")
2354 (let ((day (nth 3 dtstart-dec))
2355 (month (nth 4 dtstart-dec)))
2356 (setq result (concat "%%(and (diary-date "
2357 (cond ((eq calendar-date-style 'iso)
2358 (format "t %d %d" month day))
2359 ((eq calendar-date-style 'european)
2360 (format "%d %d t" day month))
2361 ((eq calendar-date-style 'american)
2362 (format "%d %d t" month day)))
2371 (setq result (format
2372 "%%%%(and (diary-anniversary %s)) %s%s%s"
2375 (if end-t "-" "") (or end-t "")))))
2377 ((string-equal frequency "MONTHLY")
2378 (icalendar--dmsg "monthly")
2381 "%%%%(and (diary-date %s) (diary-block %s %s)) %s%s%s"
2382 (let ((day (nth 3 dtstart-dec)))
2383 (cond ((eq calendar-date-style 'iso)
2384 (format "t t %d" day))
2385 ((eq calendar-date-style 'european)
2386 (format "%d t t" day))
2387 ((eq calendar-date-style 'american)
2388 (format "t %d t" day))))
2392 (if (eq calendar-date-style 'iso) "9999 1 1" "1 1 9999")) ;; FIXME: should be unlimited
2394 (if end-t "-" "") (or end-t ""))))
2396 ((and (string-equal frequency "DAILY"))
2400 (concat "%%%%(and (diary-cyclic %s %s) "
2401 "(diary-block %s %s)) %s%s%s")
2402 interval dtstart-conv dtstart-conv
2403 (if count until-1-conv until-conv)
2405 (if end-t "-" "") (or end-t "")))
2408 "%%%%(and (diary-cyclic %s %s)) %s%s%s"
2412 (if end-t "-" "") (or end-t ""))))))
2413 ;; Handle exceptions from recurrence rules
2414 (let ((ex-dates (icalendar--get-event-properties e 'EXDATE)))
2416 (let* ((ex-start (icalendar--decode-isodatetime
2418 (ex-d (icalendar--datetime-to-diary-date
2421 (icalendar--rris "^%%(\\(and \\)?"
2423 "%%%%(and (not (diary-date %s)) "
2426 (setq ex-dates (cdr ex-dates))))
2427 ;; FIXME: exception rules are not recognized
2428 (if (icalendar--get-event-property e 'EXRULE)
2431 "\n Exception rules: "
2432 (icalendar--get-event-properties
2436 (defun icalendar--convert-non-recurring-all-day-to-diary (event start-d end-d)
2437 "Convert non-recurring iCalendar EVENT to diary format.
2439 DTSTART is the decoded DTSTART property of E.
2440 Argument START-D gives the first day.
2441 Argument END-D gives the last day."
2442 (icalendar--dmsg "non-recurring all-day event")
2443 (format "%%%%(and (diary-block %s %s))" start-d end-d))
2445 (defun icalendar--convert-non-recurring-not-all-day-to-diary (event dtstart-dec
2449 "Convert recurring icalendar EVENT to diary format.
2451 DTSTART-DEC is the decoded DTSTART property of E.
2452 DTEND-DEC is the decoded DTEND property of E.
2453 START-T is the event's start time in diary format.
2454 END-T is the event's end time in diary format."
2455 (icalendar--dmsg "not all day event")
2458 (icalendar--datetime-to-diary-date
2463 (icalendar--datetime-to-diary-date
2467 (defun icalendar--add-diary-entry (string diary-file non-marking
2469 "Add STRING to the diary file DIARY-FILE.
2470 STRING must be a properly formatted valid diary entry. NON-MARKING
2471 determines whether diary events are created as non-marking. If
2472 SUMMARY is not nil it must be a string that gives the summary of the
2473 entry. In this case the user will be asked whether he wants to insert
2475 (when (or (not summary)
2476 (y-or-n-p (format-message "Add appointment for ‘%s’ to diary? "
2480 (y-or-n-p (format "Make appointment non-marking? "))))
2481 (save-window-excursion
2484 (read-file-name "Add appointment to this diary file: ")))
2485 ;; Note: diary-make-entry will add a trailing blank char.... :(
2486 (funcall (if (fboundp 'diary-make-entry)
2489 string non-marking diary-file)))
2490 ;; Würgaround to remove the trailing blank char
2491 (with-current-buffer (find-file diary-file)
2492 (goto-char (point-max))
2493 (if (= (char-before) ? )
2495 ;; return diary-file in case it has been changed interactively
2498 ;; ======================================================================
2500 ;; ======================================================================
2501 (defun icalendar-import-format-sample (event)
2502 "Example function for formatting an iCalendar EVENT."
2503 (format (concat "SUMMARY='%s' DESCRIPTION='%s' LOCATION='%s' ORGANIZER='%s' "
2504 "STATUS='%s' URL='%s' CLASS='%s'")
2505 (or (icalendar--get-event-property event 'SUMMARY) "")
2506 (or (icalendar--get-event-property event 'DESCRIPTION) "")
2507 (or (icalendar--get-event-property event 'LOCATION) "")
2508 (or (icalendar--get-event-property event 'ORGANIZER) "")
2509 (or (icalendar--get-event-property event 'STATUS) "")
2510 (or (icalendar--get-event-property event 'URL) "")
2511 (or (icalendar--get-event-property event 'CLASS) "")))
2513 (provide 'icalendar)
2515 ;;; icalendar.el ends here