2 * Copyright (C) 2012-2013 Andy Spencer <andy753421@gmail.com>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include <libical/ical.h>
34 struct icaltimetype start;
35 struct icaltimetype end;
38 typedef struct ical_t {
48 static ical_t *calendars;
50 /* Helper functions */
51 static int ical_compare(const void *_a, const void *_b)
53 const ical_inst *a = _a;
54 const ical_inst *b = _b;
55 int scomp = icaltime_compare(a->start, b->start);
56 int ecomp = icaltime_compare(a->end, b->end);
57 return scomp != 0 ? scomp :
58 ecomp != 0 ? ecomp : 0 ;
61 static date_t to_date(struct icaltimetype time)
65 .month = time.month ? time.month-1 : 0,
66 .day = time.day ? time.day -1 : 0,
72 static icaltimetype to_itime(date_t time)
74 return (struct icaltimetype){
76 .month = time.month + 1,
83 static void add_recur(cal_t *cal,
84 icalarray *array, icalcomponent *comp,
85 icaltimetype start, icaltimetype end,
86 icalcomponent_kind which)
88 icalcomponent_kind kind = icalcomponent_isa(comp);
91 /* Get recurrence data */
92 struct icaltimetype cstart, cend; // Component times
93 struct icaltimetype istart, iend; // Instance times
94 struct icaldurationtype length; // Duration
97 struct icalrecurrencetype recur;
98 icalrecur_iterator *iter;
100 cstart = icalcomponent_get_dtstart(comp);
101 cend = icalcomponent_get_dtend(comp);
102 length = icaltime_subtract(cend, cstart);
104 rrule = icalcomponent_get_first_property(comp, ICAL_RRULE_PROPERTY);
105 recur = icalproperty_get_rrule(rrule);
106 iter = icalrecur_iterator_new(recur, cstart);
108 /* Add recurrences */
109 if (icaltime_is_null_time(cstart) ||
110 which == ICAL_VTODO_COMPONENT) {
111 icalarray_append(array, &(ical_inst){
118 istart = iend = icalrecur_iterator_next(iter);
119 if (icaltime_is_null_time(istart))
120 break; // no more instances
121 if (!icaltime_is_null_time(cend))
122 iend = icaltime_add(iend, length);
124 if (icaltime_compare(iend, start) <= 0)
125 continue; // instance ends before start time
126 if (icaltime_compare(istart, end) >= 0)
127 break; // instance begins after stop time
129 icalarray_append(array, &(ical_inst){
137 icalrecur_iterator_free(iter);
141 icalcomponent_kind find = ICAL_ANY_COMPONENT;
142 icalcomponent *child = icalcomponent_get_first_component(comp, find);
144 add_recur(cal, array, child, start, end, which);
145 child = icalcomponent_get_next_component(comp, find);
149 static void read_icals(void)
151 for (ical_t *cal = calendars; cal; cal = cal->next) {
152 if (cal->comp == NULL && cal->location) {
154 wordexp(cal->location, &wexp, WRDE_NOCMD);
155 if (wexp.we_wordc == 0)
157 FILE *file = fopen(wexp.we_wordv[0], "r");
162 icalparser *parser = icalparser_new();
163 icalparser_set_gen_data(parser, file);
164 cal->comp = icalparser_parse(parser, (void*)fgets);
165 icalparser_free(parser);
170 /* Event functions */
171 static event_t *to_event(ical_inst *inst)
173 icalproperty *prop = icalcomponent_get_first_property(inst->comp, ICAL_CATEGORIES_PROPERTY);
175 event_t *event = new0(event_t);
176 event->name = strcopy(icalcomponent_get_summary(inst->comp));
177 event->desc = strcopy(icalcomponent_get_description(inst->comp));
178 event->loc = strcopy(icalcomponent_get_location(inst->comp));
179 event->cat = icalproperty_get_value_as_string_r(prop);
180 event->start = to_date(inst->start);
181 event->end = to_date(inst->end);
182 event->cal = inst->cal;
186 static event_t *to_events(icalarray *array)
189 event_t *tail = &list;
190 for (int i = 0; i < array->num_elements; i++) {
191 ical_inst *inst = icalarray_element_at(array, i);
192 tail->next = to_event(inst);
198 static void print_events(event_t *start)
200 for (event_t *cur = start; cur; cur = cur->next)
201 printf("%04d-%02d-%02d %02d:%02d - %s\n",
202 cur->start.year, cur->start.month, cur->start.day,
203 cur->start.hour, cur->start.min,
204 cur->name ?: cur->desc ?: "[no summary]");
208 static todo_t *to_todo(ical_inst *inst)
210 icalproperty *cat = icalcomponent_get_first_property(inst->comp, ICAL_CATEGORIES_PROPERTY);
211 icalproperty *perc = icalcomponent_get_first_property(inst->comp, ICAL_PERCENTCOMPLETE_PROPERTY);
213 todo_t *todo = new0(todo_t);
214 todo->name = strcopy(icalcomponent_get_summary(inst->comp));
215 todo->desc = strcopy(icalcomponent_get_description(inst->comp));
216 todo->cat = strcopy(icalproperty_get_value_as_string(cat));
217 todo->status = icalcomponent_get_status(inst->comp) == ICAL_STATUS_COMPLETED ? 100 :
218 perc ? icalproperty_get_percentcomplete(perc) : 0;
219 todo->start = to_date(inst->start);
220 todo->due = to_date(icalcomponent_get_due(inst->comp));
221 todo->cal = inst->cal;
225 static todo_t *to_todos(icalarray *array)
228 todo_t *tail = &list;
229 for (int i = 0; i < array->num_elements; i++) {
230 ical_inst *inst = icalarray_element_at(array, i);
231 tail->next = to_todo(inst);
237 static void print_todos(todo_t *start)
239 for (todo_t *cur = start; cur; cur = cur->next)
240 printf("%04d-%02d-%02d %02d:%02d - %d%% - %s\n",
241 cur->due.year, cur->due.month, cur->due.day,
242 cur->due.hour, cur->due.min, cur->status,
243 cur->name ?: cur->desc ?: "[no summary]");
247 void ical_config(const char *group, const char *name, const char *key, const char *value)
249 ical_t *cal = NULL, *last = NULL;
251 /* Make sure it's valid */
252 if (!match(group, "ical") || !name)
255 /* Find existing calendar */
256 for (cal = calendars; cal; last = cal, cal = cal->next)
257 if (match(cal->cal.name, name))
260 /* Create new calendar */
263 cal->cal.type = "ical";
264 cal->cal.name = get_name(name);
272 /* Set calendar values */
273 if (match(key, "location"))
274 cal->location = get_string(value);
275 else if (match(key, "username"))
276 cal->username = get_string(value);
277 else if (match(key, "password"))
278 cal->password = get_string(value);
282 cal_t *ical_cals(void)
286 for (ical_t *cal = calendars; cal; cal = cal->next)
287 cal->cal.next = &cal->next->cal;
289 return &calendars->cal;
292 /* Event functions */
293 event_t *ical_events(date_t _start, date_t _end)
297 icaltimetype start = to_itime(_start);
298 icaltimetype end = to_itime(_end);
299 icalarray *array = icalarray_new(sizeof(ical_inst), 1);
300 for (ical_t *cal = calendars; cal; cal = cal->next)
301 add_recur(&cal->cal, array, cal->comp, start, end, ICAL_VEVENT_COMPONENT);
302 icalarray_sort(array, ical_compare);
303 event_t *events = to_events(array);
304 icalarray_free(array);
310 todo_t *ical_todos(date_t _start, date_t _end)
314 icaltimetype start = to_itime(_start);
315 icaltimetype end = to_itime(_end);
316 icalarray *array = icalarray_new(sizeof(ical_inst), 1);
317 for (ical_t *cal = calendars; cal; cal = cal->next)
318 add_recur(&cal->cal, array, cal->comp, start, end, ICAL_VTODO_COMPONENT);
319 icalarray_sort(array, ical_compare);
320 todo_t *todos = to_todos(array);
321 icalarray_free(array);
327 void ical_printr(icalcomponent *comp, int depth)
329 /* Print component */
330 icalcomponent_kind kind = icalcomponent_isa(comp);
331 printf("%*s", depth, "");
332 printf("%s", icalcomponent_kind_to_string(kind));
333 if (kind == ICAL_VEVENT_COMPONENT ||
334 kind == ICAL_VTODO_COMPONENT)
335 printf(" - %s", icalcomponent_get_summary(comp) ?: "[no summary]");
339 icalcomponent_kind find = ICAL_ANY_COMPONENT;
340 icalcomponent *child = icalcomponent_get_first_component(comp, find);
342 ical_printr(child, depth+2);
343 child = icalcomponent_get_next_component(comp, find);
350 FILE *file = fopen("data/all.ics", "r");
351 icalparser *parser = icalparser_new();
352 icalparser_set_gen_data(parser, file);
353 icalcomponent *comp = icalparser_parse(parser, (void*)fgets);
357 icaltimetype start = {.year = 2000};
358 icaltimetype end = {.year = 2020};
361 array = icalarray_new(sizeof(ical_inst), 1);
362 add_recur(NULL, array, comp, start, end, ICAL_VEVENT_COMPONENT);
363 icalarray_sort(array, ical_compare);
364 event_t *events = to_events(array);
365 icalarray_free(array);
368 array = icalarray_new(sizeof(ical_inst), 1);
369 add_recur(NULL, array, comp, start, end, ICAL_VTODO_COMPONENT);
370 icalarray_sort(array, ical_compare);
371 todo_t *todos = to_todos(array);
372 icalarray_free(array);
375 //ical_printr(comp, 0);
376 //print_events(events);
385 icalparser_free(parser);