aboutsummaryrefslogtreecommitdiffstats
path: root/src/args.c
blob: a9d6df050498c39dbd7ef95f3851c3709ff803f4 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
/*
 * Calcurse - text-based organizer
 *
 * Copyright (c) 2004-2022 calcurse Development Team <misc@calcurse.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the
 *        following disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the
 *        following disclaimer in the documentation and/or other
 *        materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Send your feedback or comments to : misc@calcurse.org
 * Calcurse home page : http://calcurse.org
 *
 */

#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/types.h>
#include <limits.h>
#include <getopt.h>
#include <time.h>

#include "calcurse.h"

/* Input types for parse_datetimearg() */
enum {
	ARG_DATE,
	ARG_DATE_TIME,
	ARG_TIME,
	ARG_ERR
};

/* Long options */
enum {
	OPT_FILTER_INVERT = 1000,
	OPT_FILTER_TYPE,
	OPT_FILTER_HASH,
	OPT_FILTER_PATTERN,
	OPT_FILTER_START_FROM,
	OPT_FILTER_START_TO,
	OPT_FILTER_START_AFTER,
	OPT_FILTER_START_BEFORE,
	OPT_FILTER_START_RANGE,
	OPT_FILTER_END_FROM,
	OPT_FILTER_END_TO,
	OPT_FILTER_END_AFTER,
	OPT_FILTER_END_BEFORE,
	OPT_FILTER_END_RANGE,
	OPT_FILTER_PRIORITY,
	OPT_FILTER_COMPLETED,
	OPT_FILTER_UNCOMPLETED,
	OPT_FROM,
	OPT_TO,
	OPT_DAYS,
	OPT_FMT_APT,
	OPT_FMT_RAPT,
	OPT_FMT_EV,
	OPT_FMT_REV,
	OPT_FMT_TODO,
	OPT_DUMP_IMPORTED,
	OPT_EXPORT_UID,
	OPT_READ_ONLY,
	OPT_STATUS,
	OPT_DAEMON,
	OPT_INPUT_DATEFMT,
	OPT_OUTPUT_DATEFMT
};

/*
 * Print Calcurse usage and exit.
 */
static void usage(void)
{
	printf("%s\n", _("Usage:\n"
			 "calcurse [-D <directory>] [-C <directory>] [-c <calendar file>]\n"
			 "calcurse -Q [--from <date>] [--to <date>] [--days <number>]\n"
			 "calcurse -a | -d <date> | -d <number> | -n | -r[<number>] | -s[<date>] | -t[<number>]\n"
			 "calcurse -h | -v | --status | -G | -P | -g | -i <file> | -x[<format>] | --daemon"));
}

static void usage_try(void)
{
	printf("%s\n", _("Try `calcurse -h` for more information."));
}

/*
 * Print Calcurse version with a short copyright text and exit.
 */
static void version_arg(void)
{
	printf(_("calcurse %s -- text-based organizer\n"), VERSION);
	putchar('\n');
	printf("%s\n", _("Copyright (c) 2004-2022 calcurse Development Team."));
	printf("%s\n", _("This is free software; see the source for copying conditions."));
}

/*
 * Print the command line options and exit.
 */
static void help_arg(void)
{
	usage();
	putchar('\n');
	printf("%s\n", _("Operations in command line mode:"));
	printf("%s\n", _("  -Q, --query   Print items in a given query range"));
	printf("%s\n", _("  -G, --grep    Grep items from the data files"));
	printf("%s\n", _("  -P, --purge   Read items and write them back"));
	printf("%s\n", _("Query short forms:\n"
			 "-a, -d <date>|<number>, -n, -r[<number>], -s[<date>], -t<number>"));
	putchar('\n');
	printf("%s\n", _("Note that filter, format and day-range options affect input or output:"));
	printf("%s\n", _("  --filter-*              Filter items loaded by -Q, -G, -P and -x"));
	printf("%s\n", _("  --format-*              Rewrite output from -Q, -G and --dump-imported"));
	printf("%s\n", _("  --from <date>           Limit day range of -Q."));
	printf("%s\n", _("  --to <date>             Limit day range of -Q."));
	printf("%s\n", _("  --days <number>         Limit day range of -Q."));
	putchar('\n');
	printf("%s\n", _("  --limit, -l <number>    Limit number of query results"));
	printf("%s\n", _("  --search, -S <regexp>   Match regular expression in queries"));
	printf("%s\n", _("Consult the man page for details."));
	putchar('\n');
	printf("%s\n", _("Miscellaneous:"));
	printf("%s\n", _("  -c, --calendar <file>   The calendar data file to use"));
	printf("%s\n", _("  -C, --confdir <dir>     The configuration directory to use"));
	printf("%s\n", _("  --daemon                Run notification daemon in the background"));
	printf("%s\n", _("  -D, --datadir <dir>     The data directory to use"));
	printf("%s\n", _("  -g, --gc                Run the garbage collector"));
	printf("%s\n", _("  -h, --help              Show this help text"));
	printf("%s\n", _("  -i, --import <file>     Import iCal data from file"));
	printf("%s\n", _("  -q, --quiet             Suppress import/export result message"));
	printf("%s\n", _("  --read-only             Do not save configuration or data files"));
	printf("%s\n", _("  --status                Display status of running instances"));
	printf("%s\n", _("  -v, --version           Show version information"));
	printf("%s\n", _("  -x, --export[<format>]  Export to stdout in ical (default) or pcal format"));
	putchar('\n');
	printf("%s\n", _("For more information, type '?' from within calcurse, or read the manpage."));
	printf("%s\n", _("Submit feature requests and suggestions to <misc@calcurse.org>."));
	printf("%s\n", _("Submit bug reports to <bugs@calcurse.org>."));
}

/*
 * Used to display the status of running instances of calcurse.
 * The displayed message will look like one of the following ones:
 *
 *   calcurse is running (pid #)
 *   calcurse is running in background (pid #)
 *   calcurse is not running
 *
 * The status is obtained by looking at pid files in user data directory
 * (.calcurse.pid and .daemon.pid).
 */
static void status_arg(void)
{
	int cpid, dpid;

	cpid = io_get_pid(path_cpid);
	dpid = io_get_pid(path_dpid);

	EXIT_IF(cpid && dpid,
		_("Error: both calcurse (pid: %d) and its daemon (pid: %d)\n"
		 "seem to be running at the same time!\n"
		 "Please check manually and restart calcurse.\n"), cpid,
		dpid);

	if (cpid)
		fprintf(stdout, _("calcurse is running (pid %d)\n"), cpid);
	else if (dpid)
		fprintf(stdout,
			_("calcurse is running in background (pid %d)\n"),
			dpid);
	else
		puts(_("calcurse is not running"));
}

/* Print TODO list and return the number of printed items. */
static int todo_arg(const char *format, int *limit, struct item_filter *filter)
{
	const char *titlestr =
		filter->completed ? _("completed tasks:\n") : _("to do:\n");
	int title = 1;
	int n = 0;
	llist_item_t *i;

	LLIST_FOREACH(&todolist, i) {
		if (*limit == 0)
			break;
		struct todo *todo = LLIST_TS_GET_DATA(i);

		if (title) {
			fputs(titlestr, stdout);
			title = 0;
		}
		print_todo(format, todo);
		n++;
		(*limit)--;
	}

	return n;
}

/* Print the next appointment within the upcoming 24 hours. */
static void next_arg(void)
{
	struct notify_app next_app;
	const long current_time = now();
	int time_left, hours_left, min_left;

	next_app.time = date_sec_change(current_time, 0, 1);
	next_app.got_app = 0;
	next_app.txt = NULL;

	recur_apoint_check_next(&next_app, current_time, get_today());
	next_app = *apoint_check_next(&next_app, current_time);

	if (next_app.got_app) {
		time_left = next_app.time - current_time;
		/* In minutes rounded up. */
		min_left = time_left / MININSEC +
			   (time_left % MININSEC ? 1 : 0);
		hours_left = min_left / HOURINMIN;
		min_left = min_left % HOURINMIN;
		fputs(_("next appointment:\n"), stdout);
		fprintf(stdout, "   [%02d:%02d] %s\n", hours_left,
			min_left, next_app.txt);
		mem_free(next_app.txt);
	}
}

/*
 * Print the date on stdout.
 */
static void arg_print_date(long date)
{
	char date_str[BUFSIZ];
	struct tm lt;

	localtime_r((time_t *) & date, &lt);
	strftime(date_str, BUFSIZ, conf.output_datefmt, &lt);
	fputs(date_str, stdout);
	fputs(":\n", stdout);
}

/*
 * Print appointments inside the given query range.
 * If no start day is given (-1), today is considered.
 * If no end date is given (-1), a range of 1 day is considered.
 */
static void
date_arg_from_to(long from, long to, int add_line, const char *fmt_apt,
		 const char *fmt_rapt, const char *fmt_ev, const char *fmt_rev,
		 int *limit)
{
	long date;

	for (date = from; date <= to; date = date_sec_change(date, 0, 1)) {
		day_store_items(date, 0, 1);
		if (day_item_count(0) == 0)
			continue;
		if (add_line)
			fputs("\n", stdout);
		arg_print_date(date);
		day_write_stdout(date, fmt_apt, fmt_rapt, fmt_ev,
				 fmt_rev, limit);
		add_line = 1;
	}
}

/*
 * Convert a string with a (local time) date, date-time or time into
 * the Unix time for that point in time as follows:
 * - a date only is converted to midnight (beginning) of that day
 * - a date-time is converted to that day and time
 * - a time only is converted to that time of the current day
 * The date format is taken from the user configuration.
 * The type of the input string is returned in the type argument.
 */

static time_t parse_datetimearg(const char *str, int *type)
{
	char *date = mem_strdup(str);
	*type = ARG_ERR;
	char *time;
	struct date day;
	unsigned hour, min;
	time_t ret;

	time = strchr(date, ' ');
	if (time) { /* Date and time? */
		*time++ = '\0';
		if (!parse_time(time, &hour, &min))
			return -1;
		if (!parse_date(date, conf.input_datefmt,
		    (int *)&day.yyyy, (int *)&day.mm, (int *)&day.dd, NULL))
			return -1;
		ret = date2sec(day, hour, min);
		*type = ARG_DATE_TIME;
	} else /* Date?*/ if (parse_date(date, conf.input_datefmt,
		    (int *)&day.yyyy, (int *)&day.mm, (int *)&day.dd, NULL)) {
		ret = date2sec(day, 0, 0);
		*type = ARG_DATE;
	} else /* Time? */ if (parse_time(date, &hour, &min)) {
		ret = date2sec(*ui_calendar_get_today(), hour, min);
		*type = ARG_TIME;
	} else
		return -1;
	return ret;
}

/*
 * Parse a "from,to" date range.
 * For an open-end range no change occurs at the open end.
 */
static int parse_daterange(const char *str, time_t *date_from, time_t *date_to)
{
	int type, ret = 0;
	char *s = mem_strdup(str);
	char *p = strchr(s, ',');

	if (!p)
		goto cleanup;

	*p = '\0';
	p++;

	if (*s != '\0') {
		*date_from = parse_datetimearg(s, &type);
		if (*date_from == -1)
			goto cleanup;
	}

	if (*p != '\0') {
		*date_to = parse_datetimearg(p, &type);
		if (*date_to == -1)
			goto cleanup;
		if (type == ARG_DATE)
			*date_to = ENDOFDAY(*date_to);
	}

	ret = 1;
cleanup:
	mem_free(s);
	return ret;
}

static int parse_type_mask(const char *str)
{
	char *buf = mem_strdup(str), *p;
	int mask = 0;

	for (p = strtok(buf, ","); p; p = strtok(NULL, ",")) {
		if (!strcmp(p, "event")) {
			mask |= TYPE_MASK_EVNT;
		} else if (!strcmp(p, "apt")) {
			mask |= TYPE_MASK_APPT;
		} else if (!strcmp(p, "recur-event")) {
			mask |= TYPE_MASK_RECUR_EVNT;
		} else if (!strcmp(p, "recur-apt")) {
			mask |= TYPE_MASK_RECUR_APPT;
		} else if (!strcmp(p, "recur")) {
			mask |= TYPE_MASK_RECUR;
		} else if (!strcmp(p, "cal")) {
			mask |= TYPE_MASK_CAL;
		} else if (!strcmp(p, "todo")) {
			mask |= TYPE_MASK_TODO;
		} else {
			mask = 0;
			goto cleanup;
		}
	}

cleanup:
	mem_free(buf);
	return mask;
}

/*
 * Parse the command-line arguments and call the appropriate
 * routines to handle those arguments. Also initialize the data paths.
 * Exit here in case of errors else return the non-interactive value.
 */
int parse_args(int argc, char **argv)
{
	/* Command-line flags - NOTE that read_only is global */
	int grep = 0, grep_filter = 0, purge = 0, query = 0, next = 0;
	int status = 0, gc = 0, import = 0, export = 0, daemon = 0;
	/* Command line invocation */
	int filter_opt = 0, format_opt = 0, query_range = 0, cmd_line = 0;
	int start_from = 0, start_to = 0, end_from = 0, end_to = 0;
	/* Query ranges */
	time_t from = -1, to = -1;
	int range = 0;
	int limit = INT_MAX;
	/* Filters */
	struct item_filter filter = { 0, 0, NULL, NULL, -1, -1, -1, -1, 0, 0, 0 };
	/* Format strings */
	const char *fmt_apt = NULL;
	const char *fmt_rapt = NULL;
	const char *fmt_ev = NULL;
	const char *fmt_rev = NULL;
	const char *fmt_todo = NULL;
	/* Import and export parameters */
	int xfmt = IO_EXPORT_ICAL;
	int dump_imported = 0, export_uid = 0;
	/* Data file locations */
	const char *datadir = NULL;
	const char *cfile = NULL, *confdir = NULL;
	char *ifile = NULL;

	int ret, non_interactive = 1;
	int ch, cpid, type;
	regex_t reg;
	char buf[BUFSIZ];
	struct tm tm;
	time_t t;

	static const char *optstr = "PFgGhvnNax::t::C:d:c:r::s::S:D:i:l:qQ";

	struct option longopts[] = {
		{"appointment", no_argument, NULL, 'a'},
		{"calendar", required_argument, NULL, 'c'},
		/* Deprecated */
		{"conf", required_argument, NULL, 'C'},
		{"confdir", required_argument, NULL, 'C'},
		{"day", required_argument, NULL, 'd'},
		{"datadir", required_argument, NULL, 'D'},
		/* Deprecated */
		{"directory", required_argument, NULL, 'D'},
		{"filter", no_argument, NULL, 'F'},
		{"gc", no_argument, NULL, 'g'},
		{"grep", no_argument, NULL, 'G'},
		{"help", no_argument, NULL, 'h'},
		{"import", required_argument, NULL, 'i'},
		{"limit", required_argument, NULL, 'l'},
		{"next", no_argument, NULL, 'n'},
		{"note", no_argument, NULL, 'N'},
		{"purge", no_argument, NULL, 'P'},
		{"range", optional_argument, NULL, 'r'},
		{"startday", optional_argument, NULL, 's'},
		{"search", required_argument, NULL, 'S'},
		{"todo", optional_argument, NULL, 't'},
		{"version", no_argument, NULL, 'v'},
		{"export", optional_argument, NULL, 'x'},
		{"quiet", no_argument, NULL, 'q'},
		{"query", optional_argument, NULL, 'Q'},

		{"filter-invert", no_argument, NULL, OPT_FILTER_INVERT},
		{"filter-type", required_argument, NULL, OPT_FILTER_TYPE},
		{"filter-hash", required_argument, NULL, OPT_FILTER_HASH},
		{"filter-pattern", required_argument, NULL, OPT_FILTER_PATTERN},
		{"filter-start-from", required_argument, NULL, OPT_FILTER_START_FROM},
		{"filter-start-to", required_argument, NULL, OPT_FILTER_START_TO},
		{"filter-start-after", required_argument, NULL, OPT_FILTER_START_AFTER},
		{"filter-start-before", required_argument, NULL, OPT_FILTER_START_BEFORE},
		{"filter-start-range", required_argument, NULL, OPT_FILTER_START_RANGE},
		{"filter-end-from", required_argument, NULL, OPT_FILTER_END_FROM},
		{"filter-end-to", required_argument, NULL, OPT_FILTER_END_TO},
		{"filter-end-after", required_argument, NULL, OPT_FILTER_END_AFTER},
		{"filter-end-before", required_argument, NULL, OPT_FILTER_END_BEFORE},
		{"filter-end-range", required_argument, NULL, OPT_FILTER_END_RANGE},
		{"filter-priority", required_argument, NULL, OPT_FILTER_PRIORITY},
		{"filter-completed", no_argument, NULL, OPT_FILTER_COMPLETED},
		{"filter-uncompleted", no_argument, NULL, OPT_FILTER_UNCOMPLETED},
		{"from", required_argument, NULL, OPT_FROM},
		{"to", required_argument, NULL, OPT_TO},
		{"days", required_argument, NULL, OPT_DAYS},
		{"format-apt", required_argument, NULL, OPT_FMT_APT},
		{"format-recur-apt", required_argument, NULL, OPT_FMT_RAPT},
		{"format-event", required_argument, NULL, OPT_FMT_EV},
		{"format-recur-event", required_argument, NULL, OPT_FMT_REV},
		{"format-todo", required_argument, NULL, OPT_FMT_TODO},
		{"export-uid", no_argument, NULL, OPT_EXPORT_UID},
		{"dump-imported", no_argument, NULL, OPT_DUMP_IMPORTED},
		{"read-only", no_argument, NULL, OPT_READ_ONLY},
		{"status", no_argument, NULL, OPT_STATUS},
		{"daemon", no_argument, NULL, OPT_DAEMON},
		{"input-datefmt", required_argument, NULL, OPT_INPUT_DATEFMT},
		{"output-datefmt", required_argument, NULL, OPT_OUTPUT_DATEFMT},
		{NULL, no_argument, NULL, 0}
	};

	/*
	 * Load the configuration file first to get the input date format for
	 * parsing the remaining options.
	 */
	while ((ch = getopt_long(argc, argv, optstr, longopts, NULL)) != -1) {
		switch (ch) {
		case 'C':
			confdir = optarg;
			break;
		case 'D':
			datadir = optarg;
			break;
		case 'c':
			cfile = optarg;
			break;
		case '?':
			usage();
			usage_try();
			exit(EXIT_FAILURE);                                             \
		}
	}
	io_init(cfile, datadir, confdir);
	vars_init();
	notify_init_vars();
	if (io_file_exists(path_conf))
		config_load();

	/* Parse the remaining options. */
	optind = 1;
	while ((ch = getopt_long(argc, argv, optstr, longopts, NULL)) != -1) {
		switch (ch) {
		case 'a':
			filter.type_mask |= TYPE_MASK_CAL;
			query = 1;
			break;
		case 'c':
			break;
		case 'C':
			break;
		case 'd':
			if (is_all_digit(optarg) ||
			    (*optarg == '-' && is_all_digit(optarg + 1))) {
				range = atoi(optarg);
				EXIT_IF(range == 0, _("invalid range: %s"),
					optarg);
			} else {
				from = parse_datetimearg(optarg, &type);
				EXIT_IF(from == -1 || type != ARG_DATE,
					_("invalid date: %s"), optarg);
			}

			filter.type_mask |= TYPE_MASK_CAL;
			query = 1;
			break;
		case 'D':
			break;
		case 'F':
			grep_filter = grep = 1;
			break;
		case 'h':
			help_arg();
			exit(EXIT_SUCCESS);
		case 'g':
			gc = 1;
			break;
		case 'G':
			grep = 1;
			break;
		case 'i':
			import = 1;
			ifile = optarg;
			break;
		case 'l':
			limit = atoi(optarg);
			break;
		case 'n':
			next = 1;
			break;
		case 'P':
			filter.invert = 1;
			purge = grep = 1;
			break;
		case 'r':
			if (optarg)
				range = atoi(optarg);
			else
				range = 1;
			EXIT_IF(range == 0, _("invalid range: %s"), optarg);
			filter.type_mask |= TYPE_MASK_CAL;
			query = 1;
			break;
		case 's':
			if (!optarg)
				optarg = "today";
			from = parse_datetimearg(optarg, &type);
			EXIT_IF(from == -1 || type != ARG_DATE,
				_("invalid date: %s"), optarg);
			filter.type_mask |= TYPE_MASK_CAL;
			query = 1;
			break;
		case 't':
			if (optarg) {
				EXIT_IF(!is_all_digit(optarg),
					_("invalid priority: %s"), optarg);
				filter.priority = atoi(optarg);
				if (filter.priority == 0)
					filter.completed = 1;
				else
					filter.uncompleted = 1;
				EXIT_IF(filter.priority > 9,
					_("invalid priority: %s"), optarg);
			} else {
				filter.uncompleted = 1;
			}
			filter.type_mask |= TYPE_MASK_TODO;
			query = 1;
			break;
		case 'v':
			version_arg();
			exit(EXIT_SUCCESS);
		case 'x':
			export = 1;
			if (optarg) {
				if (!strcmp(optarg, "ical"))
					xfmt = IO_EXPORT_ICAL;
				else if (!strcmp(optarg, "pcal"))
					xfmt = IO_EXPORT_PCAL;
				else
					EXIT(_("invalid export format: %s"),
					     optarg);
			}
			break;
		case 'q':
			quiet = 1;
			break;
		case 'Q':
			query = 1;
			break;
		case OPT_FILTER_INVERT:
			filter.invert = !filter.invert;
			filter_opt = 1;
			break;
		case OPT_FILTER_TYPE:
			filter.type_mask = parse_type_mask(optarg);
			EXIT_IF(filter.type_mask == 0,
				_("invalid filter mask"));
			filter_opt = 1;
			break;
		case OPT_FILTER_HASH:
			filter.hash = mem_strdup(optarg);
			filter_opt = 1;
			break;
		case 'S':
		case OPT_FILTER_PATTERN:
			EXIT_IF(filter.regex,
				_("cannot handle more than one regular expression"));
			if (regcomp(&reg, optarg, REG_EXTENDED))
				EXIT(_("could not compile regular expression: %s"), optarg);
			filter.regex = &reg;
			filter_opt = 1;
			break;
		/*
		 * A date only is a time span (a day) and interpreted thus:
		 * "to" means "to end of day"
		 * "after" means "from start of next day"
		 */
		case OPT_FILTER_START_FROM:
			EXIT_IF(start_from,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.start_from = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.start_from == -1,
				_("invalid date: %s"), optarg);
			start_from = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_START_TO:
			EXIT_IF(start_to,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.start_to = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.start_to == -1,
				_("invalid date: %s"), optarg);
			if (type == ARG_DATE)
				filter.start_to = ENDOFDAY(filter.start_to);
			start_to = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_START_AFTER:
			EXIT_IF(start_from,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.start_from = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.start_from == -1,
				_("invalid date: %s"), optarg);
			if (type == ARG_DATE)
				filter.start_from = NEXTDAY(filter.start_from);
			else
				filter.start_from++;
			start_from = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_START_BEFORE:
			EXIT_IF(start_to,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.start_to = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.start_to == -1,
				_("invalid date: %s"), optarg);
			filter.start_to--;
			start_to = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_START_RANGE:
			EXIT_IF(start_from,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			EXIT_IF(start_to,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			/* Set initialization values in case of open-end range. */
			filter.start_from = filter.start_to = -1;
			EXIT_IF(!parse_daterange(optarg, &filter.start_from, &filter.start_to),
				_("invalid date range: %s"), optarg);
			start_from = 1;
			start_to = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_END_FROM:
			EXIT_IF(end_from,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.end_from = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.end_from == -1,
				_("invalid date: %s"), optarg);
			end_from = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_END_TO:
			EXIT_IF(end_to,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.end_to = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.end_to == -1,
				_("invalid date: %s"), optarg);
			if (type == ARG_DATE)
				filter.end_to = ENDOFDAY(filter.end_to);
			end_to = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_END_AFTER:
			EXIT_IF(end_from,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.end_from = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.end_from == -1,
				_("invalid date: %s"), optarg);
			if (type == ARG_DATE)
				filter.end_from = NEXTDAY(filter.end_from);
			else
				filter.end_from++;
			end_from = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_END_BEFORE:
			EXIT_IF(end_to,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			filter.end_to = parse_datetimearg(optarg, &type);
			EXIT_IF(filter.end_to == -1,
				_("invalid date: %s"), optarg);
			filter.end_to--;
			end_to = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_END_RANGE:
			EXIT_IF(end_from,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			EXIT_IF(end_to,
			    _("filter criterion already in use: %s"), argv[optind - 2]);
			/* Set default values in case of open-ended range. */
			filter.start_from = filter.start_to = -1;
			EXIT_IF(!parse_daterange(optarg, &filter.end_from, &filter.end_to),
				_("invalid date range: %s"), optarg);
			end_from = 1;
			end_to = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_PRIORITY:
			filter.priority = atoi(optarg);
			EXIT_IF(filter.priority < 1 || filter.priority > 9,
				_("invalid priority: %s"), optarg);
			filter_opt = 1;
			break;
		case OPT_FILTER_COMPLETED:
			filter.completed = 1;
			filter_opt = 1;
			break;
		case OPT_FILTER_UNCOMPLETED:
			filter.uncompleted = 1;
			filter_opt = 1;
			break;
		case OPT_FROM:
			from = parse_datetimearg(optarg, &type);
			EXIT_IF(from == -1 || type != ARG_DATE,
				_("invalid date: %s"), optarg);
			query_range = 1;
			break;
		case OPT_TO:
			to = parse_datetimearg(optarg, &type);
			EXIT_IF(to == -1 || type != ARG_DATE,
				_("invalid date: %s"), optarg);
			query_range = 1;
			break;
		case OPT_DAYS:
			range = atoi(optarg);
			EXIT_IF(range == 0, _("invalid range: %s"), optarg);
			query_range = 1;
			break;
		case OPT_FMT_APT:
			fmt_apt = optarg;
			format_opt = 1;
			break;
		case OPT_FMT_RAPT:
			fmt_rapt = optarg;
			format_opt = 1;
			break;
		case OPT_FMT_EV:
			fmt_ev = optarg;
			format_opt = 1;
			break;
		case OPT_FMT_REV:
			fmt_rev = optarg;
			format_opt = 1;
			break;
		case OPT_FMT_TODO:
			fmt_todo = optarg;
			format_opt = 1;
			break;
		case OPT_DUMP_IMPORTED:
			dump_imported = 1;
			break;
		case OPT_EXPORT_UID:
			export_uid = 1;
			break;
		case OPT_READ_ONLY:
			read_only = 1;
			break;
		case OPT_STATUS:
			status = 1;
			break;
		case OPT_DAEMON:
			EXIT_IF(cpid = io_get_pid(path_cpid),
				_("calcurse is running (pid = %d)"), cpid);
			daemon = 1;
			filter.type_mask = TYPE_MASK_APPT | TYPE_MASK_RECUR_APPT;
			break;
		case OPT_INPUT_DATEFMT:
			conf.input_datefmt = atoi(optarg);
			EXIT_IF(conf.input_datefmt < 1 || conf.input_datefmt > 4,
				_("invalid input date format: %s"), optarg);
			cmd_line = 1;
			break;
		case OPT_OUTPUT_DATEFMT:
			time(&t);
			localtime_r(&t, &tm);
			EXIT_IF(!strftime(buf, sizeof(buf), optarg, &tm),
			       _("invalid output date format: %s"), optarg);
			strncpy(conf.output_datefmt, optarg,
				sizeof(conf.output_datefmt) - 1);
			conf.output_datefmt[sizeof(conf.output_datefmt) - 1] =
				'\0';
			cmd_line = 1;
			break;
		}
	}

	if (filter.type_mask == 0)
		filter.type_mask = TYPE_MASK_ALL;

	if (status + grep + query + next + gc + import + export + daemon > 1 ||
	    optind < argc ||
	    (filter_opt && !(grep + query + export)) ||
	    (format_opt && !(grep + query + dump_imported)) ||
	    (query_range && !query) ||
	    (purge && !filter.invert)
	   )
		EXIT(_("invalid argument combination"));

	EXIT_IF(to >= 0 && range, _("cannot specify a range and an end date"));
	if (from == -1)
		from = get_today();
	if (to == -1)
		to = ENDOFDAY(from);
	EXIT_IF(to < from, _("end date cannot come before start date"));
	if (range > 0)
		to = date_sec_change(from, 0, range - 1);
	else if (range < 0)
		from = date_sec_change(to, 0, range + 1);

	io_check_dir(path_ddir);
	io_check_dir(path_notes);
	io_check_dir(path_cdir);
	io_check_dir(path_hooks);

	if (status) {
		status_arg();
	} else if (grep) {
		io_check_file(path_apts);
		io_check_file(path_todo);
		io_check_file(path_conf);
		io_load_data(&filter, FORCE);
		if (purge || grep_filter) {
			io_save_todo(path_todo);
			io_save_apts(path_apts);
		} else {
			/*
			 * Use default values for non-specified format strings.
			 */
			fmt_apt = fmt_apt ? fmt_apt : "%(raw)";
			fmt_rapt = fmt_rapt ? fmt_rapt : "%(raw)";
			fmt_ev = fmt_ev ? fmt_ev : "%(raw)";
			fmt_rev = fmt_rev ? fmt_rev : "%(raw)";
			fmt_todo = fmt_todo ? fmt_todo : "%(raw)";

			io_dump_todo(fmt_todo);
			io_dump_apts(fmt_apt, fmt_rapt, fmt_ev, fmt_rev);
		}
	} else if (query) {
		io_check_file(path_apts);
		io_check_file(path_todo);
		io_check_file(path_conf);
		io_load_data(&filter, FORCE);

		/* Use default values for non-specified format strings. */
		fmt_apt = fmt_apt ? fmt_apt : " - %S -> %E\n\t%m\n";
		fmt_rapt = fmt_rapt ? fmt_rapt : " - %S -> %E\n\t%m\n";
		fmt_ev = fmt_ev ? fmt_ev : " * %m\n";
		fmt_rev = fmt_rev ? fmt_rev : " * %m\n";
		fmt_todo = fmt_todo ? fmt_todo : "%p. %m\n";

		int add_line = todo_arg(fmt_todo, &limit, &filter);
		date_arg_from_to(from, to, add_line, fmt_apt, fmt_rapt, fmt_ev,
				 fmt_rev, &limit);
	} else if (next) {
		io_check_file(path_apts);
		io_load_app(&filter);
		next_arg();
	} else if (gc) {
		io_check_file(path_apts);
		io_check_file(path_todo);
		io_load_data(NULL, FORCE);
		note_gc();
	} else if (import) {
		io_check_file(path_apts);
		io_check_file(path_todo);
		io_load_data(NULL, FORCE);
		if (dump_imported) {
			/*
			 * Use default values for non-specified format strings.
			 */
			fmt_apt = fmt_apt ? fmt_apt : "%(raw)";
			fmt_rapt = fmt_rapt ? fmt_rapt : "%(raw)";
			fmt_ev = fmt_ev ? fmt_ev : "%(raw)";
			fmt_rev = fmt_rev ? fmt_rev : "%(raw)";
			fmt_todo = fmt_todo ? fmt_todo : "%(raw)";
		} else {
			/*
			 * Do not dump items, unset format strings explicitly.
			 */
			fmt_apt = fmt_rapt = fmt_ev = fmt_rev = NULL;
			fmt_todo = NULL;
		}
		ret = io_import_data(IO_IMPORT_ICAL, ifile, fmt_ev, fmt_rev,
				     fmt_apt, fmt_rapt, fmt_todo);
		io_save_apts(path_apts);
		io_save_todo(path_todo);
		if (!ret)
			exit_calcurse(EXIT_FAILURE);
	} else if (export) {
		io_check_file(path_apts);
		io_check_file(path_todo);
		io_load_data(&filter, FORCE);
		io_export_data(xfmt, export_uid);
	} else if (daemon) {
		dmon_stop();
		dmon_start(0);
	} else if (!cmd_line) {
		/* interactive mode */
		non_interactive = 0;
	}

	/* Free filter parameters. */
	if (filter.regex)
		regfree(filter.regex);

	return non_interactive;
}