aboutsummaryrefslogtreecommitdiffstats
path: root/src/io.c
blob: 5bfbdb79f71292253aa93903bc9c4ed13929e74b (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
/*	$calcurse: io.c,v 1.11 2007/03/11 15:22:39 culot Exp $	*/

/*
 * Calcurse - text-based organizer
 * Copyright (c) 2004-2007 Frederic Culot
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Send your feedback or comments to : calcurse@culot.org
 * Calcurse home page : http://culot.org/calcurse
 *
 */

#include <ncurses.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <math.h>
#include <unistd.h>

#include "i18n.h"
#include "utils.h"
#include "custom.h"
#include "todo.h"
#include "event.h"
#include "apoint.h"
#include "recur.h"
#include "io.h"
#include "vars.h"

static FILE *io_get_export_stream(void);
static void io_export_header(FILE *stream);
static void io_export_footer(FILE *stream);
static void io_export_apoints(FILE *stream);
static void io_export_todo(FILE *stream);

/* Ask user for a file name to export data to. */
FILE *
io_get_export_stream(void)
{
	FILE *stream;
	char *home, *stream_name;
	char *question =
	    _("Choose the file used to export calcurse data:");
	char *wrong_name = 
	    _("The file cannot be accessed, please enter another file name.");
	char *press_enter =
	    _("Press [ENTER] to continue.");

	stream = NULL;
	stream_name = (char *)malloc(MAX_LENGTH);
	home = getenv("HOME");
	if (home == NULL)
		home = ".";
	snprintf(stream_name, MAX_LENGTH, "%s/calcurse.ics", home);
	
	while (stream == NULL) {
		status_mesg(question, "");
		updatestring(swin, &stream_name, 0, 1);
		stream = fopen(stream_name, "w");
		if (stream == NULL) {
			status_mesg(wrong_name, press_enter);
			wgetch(swin);
		}
	}
	free(stream_name);
	
	return (stream);
} 

/* Export header. */
void
io_export_header(FILE *stream)
{
	fprintf(stream, "BEGIN:VCALENDAR\n");
	fprintf(stream, "PROID:-//calcurse/ical//NONSGML 1.0//EN\n");
	fprintf(stream, "VERSION:2.0\n");	
}

/* Export footer. */
void
io_export_footer(FILE *stream)
{
	fprintf(stream, "END:VCALENDAR\n");
}

/* Export appointments. */
void
io_export_apoints(FILE *stream)
{
	apoint_llist_node_t *i;
	struct tm *lt;
	time_t t;
	
	pthread_mutex_lock(&(alist_p->mutex));
	for (i = alist_p->root; i != 0; i = i->next) { 
		t = i->start;
		lt = localtime(&t);
		fprintf(stream, "BEGIN:VEVENT\n");
		fprintf(stream, "DTSTART:%04d%02d%02dT%02d%02d%02d\n",
		    lt->tm_year + 1900, lt->tm_mon + 1, lt->tm_mday,
		    lt->tm_hour, lt->tm_min, lt->tm_sec);
		fprintf(stream, "DURATION:P%ldS\n", i->dur);
		fprintf(stream, "SUMMARY:%s\n", i->mesg);
		fprintf(stream, "END:VEVENT\n");
	}
	pthread_mutex_unlock(&(alist_p->mutex));
}

/* Export todo items. */
void
io_export_todo(FILE *stream)
{
	struct todo_s *i;	

	for (i = todolist; i != 0; i = i->next) {
		fprintf(stream, "BEGIN:VTODO\n");
		fprintf(stream, "PRIORITY:%d\n", i->id);
		fprintf(stream, "SUMMARY:%s\n", i->mesg);
		fprintf(stream, "END:VTODO\n");
	}
}

/* 
 * Initialization of data paths. The argument cfile is the variable
 * which contains the calendar file. If none is given, then the default
 * one (~/.calcurse/apts) is taken. If the one given does not exist, it
 * is created.
 */
void
io_init(char *cfile)
{
	FILE *data_file;
	char *home;
	char apts_file[MAX_LENGTH] = "";
	int ch;

	home = getenv("HOME");
	if (home == NULL) {
		home = ".";
	}
	snprintf(path_dir, MAX_LENGTH, "%s/" DIR_NAME, home);
	snprintf(path_todo, MAX_LENGTH, "%s/" TODO_PATH, home);
	snprintf(path_conf, MAX_LENGTH, "%s/" CONF_PATH, home);
	if (cfile == NULL) {
		snprintf(path_apts, MAX_LENGTH, "%s/" APTS_PATH, home);
	} else {
		snprintf(apts_file, MAX_LENGTH, "%s", cfile);
		strncpy(path_apts, apts_file, MAX_LENGTH);
		/* check if the file exists, otherwise create it */
		data_file = fopen(path_apts, "r");
		if (data_file == NULL) {
			printf(_("%s does not exist, create it now [y or n] ? "), path_apts);
			ch = getchar();
			switch (ch) {
				case 'N':
				case 'n':
					printf(_("aborting...\n"));
					exit(EXIT_FAILURE);
					break;

				case 'Y':
				case 'y':
					data_file = fopen(path_apts, "w");
					if (data_file == NULL) {
						perror(path_apts);
						exit(EXIT_FAILURE);
					} else {
						printf(_("%s successfully created\n"),path_apts);
						printf(_("starting interactive mode...\n"));
					}
					break;

				default:
					printf(_("aborting...\n"));
					exit(EXIT_FAILURE);
					break;
			} 
		}
		fclose(data_file);
	}
}

  /* get data from file */
void extract_data(char *dst_data, const char *org, int len)
{
	for (;;) {
		if (*org == '\n' || *org == '\0')
			break;
		*dst_data++ = *org++;
	}
	*dst_data = '\0';
}

/* Save the calendar data */
void
save_cal(bool auto_save, bool confirm_quit, bool confirm_delete, 
    bool skip_system_dialogs, bool skip_progress_bar, 
    bool week_begins_on_monday, int layout)
{
	FILE *data_file;
	struct event_s *k;
	apoint_llist_node_t *j;
	struct todo_s *i;
	char theme_name[MAX_LENGTH];
	char *access_pb = _("Problems accessing data file ...");
	char *config_txt =
	    "#\n# Calcurse configuration file\n#\n# This file sets the configuration options used by Calcurse. These\n# options are usually set from within Calcurse. A line beginning with \n# a space or tab is considered to be a continuation of the previous line.\n# For a variable to be unset its value must be blank.\n# To set a variable to the empty string its value should be \"\".\n# Lines beginning with \"#\" are comments, and ignored by Calcurse.\n";
	char *save_success = _("The data files were successfully saved");
	char *enter = _("Press [ENTER] to continue");
	bool save = true, show_bar = false;

	if (!skip_progress_bar) 
		show_bar = true;

	/* Save the user configuration. */
	
	if (show_bar) 
		progress_bar(save, 1);
	data_file = fopen(path_conf, "w");
	if (data_file == (FILE *) 0)
                status_mesg(access_pb, "");
	else {
		custom_color_theme_name(theme_name);

		fprintf(data_file, "%s\n", config_txt);

		fprintf(data_file,
		    "# If this option is set to yes, automatic save is done when quitting\n");
		fprintf(data_file, "auto_save=\n");
		fprintf(data_file, "%s\n", 
			(auto_save) ? "yes" : "no");

		fprintf(data_file,
		    "\n# If this option is set to yes, confirmation is required before quitting\n");
		fprintf(data_file, "confirm_quit=\n");
		fprintf(data_file, "%s\n", 
			(confirm_quit) ? "yes" : "no");

		fprintf(data_file,
		    "\n# If this option is set to yes, confirmation is required before deleting an event\n");
		fprintf(data_file, "confirm_delete=\n");
		fprintf(data_file, "%s\n", 
			(confirm_delete) ? "yes" : "no");

		fprintf(data_file,
		    "\n# If this option is set to yes, messages about loaded and saved data will not be displayed\n");
		fprintf(data_file, "skip_system_dialogs=\n");
		fprintf(data_file, "%s\n", 
			(skip_system_dialogs) ? "yes" : "no");

		fprintf(data_file,
		    "\n# If this option is set to yes, progress bar appearing when saving data will not be displayed\n");
		fprintf(data_file, "skip_progress_bar=\n");
		fprintf(data_file, "%s\n", 
			(skip_progress_bar) ? "yes" : "no");

		fprintf(data_file,
		    "\n# If this option is set to yes, monday is the first day of the week, else it is sunday\n");
		fprintf(data_file, "week_begins_on_monday=\n");
		fprintf(data_file, "%s\n", 
			(week_begins_on_monday) ? "yes" : "no");

		fprintf(data_file,
		    "\n# This is the color theme used for menus :\n");
		fprintf(data_file, "color-theme=\n");
		fprintf(data_file, "%s\n", theme_name);

		fprintf(data_file,
		    "\n# This is the layout of the calendar :\n");
		fprintf(data_file, "layout=\n");
		fprintf(data_file, "%d\n", layout);

		pthread_mutex_lock(&nbar->mutex);
		fprintf(data_file,
		    "\n# If this option is set to yes, notify-bar will be displayed :\n");
		fprintf(data_file, "notify-bar_show=\n");
		fprintf(data_file, "%s\n", (nbar->show) ? "yes" : "no");
		
		fprintf(data_file,
		    "\n# Format of the date to be displayed inside notify-bar :\n");
		fprintf(data_file, "notify-bar_date=\n");
		fprintf(data_file, "%s\n", nbar->datefmt);

		fprintf(data_file,
		    "\n# Format of the time to be displayed inside notify-bar :\n");
		fprintf(data_file, "notify-bar_clock=\n");
		fprintf(data_file, "%s\n", nbar->timefmt);

		fprintf(data_file,
		    "\n# Warn user if he has an appointment within next 'notify-bar_warning' seconds :\n");
		fprintf(data_file, "notify-bar_warning=\n");
		fprintf(data_file, "%d\n", nbar->cntdwn);

		fprintf(data_file,
		    "\n# Command used to notify user of an upcoming appointment :\n");
		fprintf(data_file, "notify-bar_command=\n");
		fprintf(data_file, "%s\n", nbar->cmd);

		pthread_mutex_unlock(&nbar->mutex);

		fclose(data_file);
	}

	/* Save the todo data file. */
	if (show_bar) progress_bar(save, 2);
	data_file = fopen(path_todo, "w");
	if (data_file == (FILE *) 0)
	        status_mesg(access_pb, ""); 
	else {
		for (i = todolist; i != 0; i = i->next)
			fprintf(data_file, "[%d] %s\n", i->id, i->mesg);
		fclose(data_file);
	}

	/* 
         * Save the apts data file, which contains the 
         * appointments first, and then the events. 
	 * Recursive items are written first.
         */
	if (show_bar) progress_bar(save, 3);
	data_file = fopen(path_apts, "w");
	if (data_file == (FILE *) 0)
	        status_mesg(access_pb, "");
	else {
		recur_save_data(data_file);

		pthread_mutex_lock(&(alist_p->mutex));
		for (j = alist_p->root; j != 0; j = j->next)
			apoint_write(j, data_file);
		pthread_mutex_unlock(&(alist_p->mutex));

		for (k = eventlist; k != 0; k = k->next)
			event_write(k, data_file);
		fclose(data_file);
	}
 

	/* Print a message telling data were saved */
        if (!skip_system_dialogs){
                status_mesg(save_success, enter);
                wgetch(swin);
        }
}

/* 
 * Check what type of data is written in the appointment file, 
 * and then load either: a new appointment, a new event, or a new
 * recursive item (which can also be either an event or an appointment).
 */ 
void 
load_app(void)
{
	FILE *data_file;
	int c, is_appointment, is_event, is_recursive;
        struct tm start, end, until, *lt;
	struct days_s *exc = NULL;
        time_t t;
        int id = 0;
	int freq;
	char type, state;
	char *error = 
		_("FATAL ERROR in load_app: wrong format in the appointment or event\n");

        t = time(NULL);
        lt = localtime(&t);
        start = end = until = *lt;
	
	data_file = fopen(path_apts, "r");
	for (;;) {
                is_appointment = is_event = is_recursive = 0;
		c = getc(data_file);
		if (c == EOF)
			break;
		ungetc(c, data_file);

                /* Read the date first: it is common to both events
                 * and appointments. 
                 */
                if (fscanf(data_file, "%u / %u / %u ", 
                           &start.tm_mon, &start.tm_mday, &start.tm_year) != 3) {
                        fputs(_("FATAL ERROR in load_app: "
				"syntax error in the item date\n"), stderr);
                        exit(EXIT_FAILURE);
                }

                /* Read the next character : if it is an '@' then we have
                 * an appointment, else if it is an '[' we have en event.
                 */
                c = getc(data_file);

                if (c == '@')
                        is_appointment = 1;
                else if (c == '[')
                        is_event = 1;
                else {
                        fputs(_("FATAL ERROR in load_app: "
				"no event nor appointment found\n"), stderr);
                        exit(EXIT_FAILURE);
                }
                ungetc(c, data_file);

                /* Read the remaining informations. */
                if (is_appointment) {
                        fscanf(data_file, "@ %u : %u -> %u / %u / %u @ %u : %u ",
                               &start.tm_hour, &start.tm_min,
                               &end.tm_mon, &end.tm_mday, &end.tm_year,
                               &end.tm_hour, &end.tm_min); 
                } else if (is_event) {
                        fscanf(data_file, "[%d] ", &id);
                } else { /* NOT REACHED */
                  	fputs(error, stderr);
			exit(EXIT_FAILURE);
                }
		
		/* Check if we have a recursive item. */
		c = getc(data_file);

		if (c == '{') {
			ungetc(c, data_file);
			is_recursive = 1;
			fscanf(data_file, "{ %d%c ", &freq, &type);

			c = getc(data_file);
			if (c == '}') { /* endless recurrent item */
				ungetc(c, data_file);
				fscanf(data_file, "} ");
				until.tm_year = 0;	
			} else if (c == '-') {
				ungetc(c, data_file);
				fscanf(data_file, " -> %u / %u / %u ",
					&until.tm_mon, &until.tm_mday, 
					&until.tm_year);
				c = getc(data_file);
				if (c == '!') {
					ungetc(c, data_file);
					exc = recur_exc_scan(data_file);
					fscanf(data_file, "} ");
				} else {
					ungetc(c, data_file);
					fscanf(data_file, "} ");
				}
			} else if (c == '!') { // endless item with exceptions
				ungetc(c, data_file);
				exc = recur_exc_scan(data_file);
				until.tm_year = 0;
			} else { /* NOT REACHED */
				fputs(error, stderr);
				exit(EXIT_FAILURE);
			}
		} else 
			ungetc(c, data_file);

		/*
		 * Last: read the item description and load it into its
		 * corresponding linked list, depending on the item type.
		 */
		if (is_appointment) {
			c = getc(data_file);
			if (c == '!') {
				ungetc(c, data_file);
				fscanf(data_file, "! ");
				state |= APOINT_NOTIFY;
			} else {
				ungetc(c, data_file);
				fscanf(data_file, "| ");
				state = 0L;
			}
			if (is_recursive) {
				recur_apoint_scan(data_file, start, end,
				    type, freq, until, exc, state);
			} else {
				apoint_scan(data_file, start, end, state);
			}
		} else if (is_event) {
			if (is_recursive) {
				recur_event_scan(data_file, start, id,
					type, freq, until, exc);
			} else {
				event_scan(data_file, start, id);
			}
		} else { /* NOT REACHED */
			fputs(error, stderr);
			exit(EXIT_FAILURE);	
		}
	}
	fclose(data_file);
}

/* Load the todo data */
int
load_todo(void)
{
	FILE *data_file;
	char *mesg_line1 = _("Failed to open todo file");
	char *mesg_line2 = _("Press [ENTER] to continue");
	char *nl;
	int nb_tod = 0;
	int c, id;
	char buf[MAX_LENGTH], e_todo[MAX_LENGTH];

	data_file = fopen(path_todo, "r");
	if (data_file == NULL) {
		status_mesg(mesg_line1, mesg_line2);
		wgetch(swin);
	}
	for (;;) {
		c = getc(data_file);
		if (c == EOF) {
			break;
		} else if (c == '[') { /* new style with id */
			fscanf(data_file, "%d] ", &id);
		} else {
			id = 9;
			ungetc(c, data_file);
		}
		fgets(buf, MAX_LENGTH, data_file);
		nl = strchr(buf, '\n');
		if (nl) {
			*nl = '\0';
		}
		extract_data(e_todo, buf, strlen(buf));
		todo_add(e_todo, id);
		++nb_tod;
	}
	fclose(data_file);
	return nb_tod;
}

/* Checks if data files exist. If not, create them */
int 
check_data_files(void)
{
	FILE *data_file;
	int no_data_file;

	no_data_file = 0;
	/* Create the calcurse repertory if not present. */
	mkdir(path_dir, 0700);

	data_file = fopen(path_todo, "r");
	if (data_file == NULL) {
		no_data_file++;
		data_file = fopen(path_todo, "w");
		if (data_file == NULL) {
			perror(path_todo);
			return no_data_file;
		}
	}
	fclose(data_file);

	data_file = fopen(path_apts, "r");
	if (data_file == NULL) {
		no_data_file++;
		data_file = fopen(path_apts, "w");
		if (data_file == NULL) {
			perror(path_apts);
			return no_data_file;
		}
	}
	fclose(data_file);

	data_file = fopen(path_conf, "r");
	if (data_file == NULL) {
		no_data_file++;
		data_file = fopen(path_conf, "w");
		if (data_file == NULL) {
			perror(path_conf);
			return no_data_file;
		}
	}
	fclose(data_file);
        return no_data_file;
}

/* Draw the startup screen */
void 
startup_screen(bool skip_dialogs, int no_data_file)
{
	char *welcome_mesg = 
	    _("Welcome to Calcurse. Missing data files were created.");
	char *data_mesg = _("Data files found. Data will be loaded now.");
	char *enter = _("Press [ENTER] to continue");

	if (no_data_file != 0) {
		status_mesg(welcome_mesg, enter);
		wgetch(swin);
	} else if (!skip_dialogs) {
		status_mesg(data_mesg, enter);
		wgetch(swin);
	}
}

/* Draw a progress bar while saving or loading data. */
void 
progress_bar(bool save, int progress)
{
	int i, nbd = 4;
	char *mesg_sav  = _("Saving...");
	char *mesg_load = _("Loading...");
	char *barchar = "|";
	char *data[4] = {
		"[            ]",
		"[    conf    ]", 
		"[    todo    ]", 
		"[    apts    ]"}; 
	int ipos = strlen(data[1]) + 2;
	int epos[4];
	int sleep_time = 125000;
	
	/* progress bar length init. */
	epos[0] = floor(col / nbd);
	epos[1] = 2*epos[0]; 
	epos[2] = 3*epos[0];
	epos[3] = col - 2;

	/* Display which data is being saved. */
	if (save) 
		status_mesg(mesg_sav, data[progress]);
	else
		status_mesg(mesg_load, data[progress]);

	/* Draw the progress bar. */
	mvwprintw(swin, 1, ipos, barchar);
	mvwprintw(swin, 1, epos[nbd - 1], barchar);
	custom_apply_attr(swin, ATTR_HIGHEST);
	for (i = ipos + 1; i < epos[progress]; i++)
		mvwaddch(swin, 1, i, ' ' | A_REVERSE);
	custom_remove_attr(swin, ATTR_HIGHEST);
	wmove(swin, 0, 0);
	wrefresh(swin);
	usleep(sleep_time); 
}

/* Export calcurse data. */
void
io_export_data(export_mode_t mode)
{
	FILE *stream;
	char *wrong_mode = 
		_("FATAL ERROR in io_export_data: wrong export mode\n");

	switch (mode) {
	case IO_EXPORT_NONINTERACTIVE:
		stream = stdout;
		break;
	case IO_EXPORT_INTERACTIVE:
		stream = io_get_export_stream();
		break;
	default:
	  	fputs(wrong_mode, stderr);
		exit(EXIT_FAILURE);
		/* NOTREACHED */
	}

	io_export_header(stream);
/*
	io_export_recur_event(stream);
	io_export_events(stream);
	io_export_recur_apoints(stream);
*/
	io_export_apoints(stream);
	io_export_todo(stream);
	io_export_footer(stream);

	if (stream != stdout)
		fclose(stream);
}