2 * Copyright (C) 2012 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/>.
20 #include <libical/ical.h>
29 struct icaltimetype start;
30 struct icaltimetype end;
33 /* Helper functions */
34 static int ical_compare(const void *_a, const void *_b)
36 const ical_inst *a = _a;
37 const ical_inst *b = _b;
38 int scomp = icaltime_compare(a->start, b->start);
39 int ecomp = icaltime_compare(a->end, b->end);
40 return scomp != 0 ? scomp :
41 ecomp != 0 ? ecomp : 0 ;
44 static date_t to_date(struct icaltimetype time)
48 .month = time.month-1,
55 static event_t *to_event(ical_inst *inst)
57 icalproperty *prop = icalcomponent_get_first_property(inst->comp, ICAL_CATEGORIES_PROPERTY);
59 event_t *event = calloc(1, sizeof(event_t));
60 event->name = icalcomponent_get_summary(inst->comp);
61 event->desc = icalcomponent_get_description(inst->comp);
62 event->loc = icalcomponent_get_location(inst->comp);
63 event->cat = icalproperty_get_value_as_string(prop);
64 event->start = to_date(inst->start);
65 event->end = to_date(inst->end);
69 static event_t *to_list(icalarray *array)
72 event_t *tail = &list;
73 for (int i = 0; i < array->num_elements; i++) {
74 ical_inst *inst = icalarray_element_at(array, i);
75 tail->next = to_event(inst);
81 static void print_list(event_t *start)
83 for (event_t *cur = start; cur; cur = cur->next)
84 printf("%04d-%02d-%02d %02d:%02d - %s\n",
85 cur->start.year, cur->start.month, cur->start.day,
86 cur->start.hour, cur->start.min,
87 cur->name ?: cur->desc ?: "[no summary]");
90 static void add_events(icalarray *array, icalcomponent *comp,
91 icaltimetype start, icaltimetype end)
93 icalcomponent_kind kind = icalcomponent_isa(comp);
95 if (kind == ICAL_VEVENT_COMPONENT ||
96 kind == ICAL_VTODO_COMPONENT) {
97 /* Get recurrence data */
98 struct icaltimetype cstart, cend; // Component times
99 struct icaltimetype istart, iend; // Instance times
100 struct icaldurationtype length; // Duration
103 struct icalrecurrencetype recur;
104 icalrecur_iterator *iter;
106 cstart = icalcomponent_get_dtstart(comp);
107 cend = icalcomponent_get_dtend(comp);
108 length = icaltime_subtract(cend, cstart);
110 rrule = icalcomponent_get_first_property(comp, ICAL_RRULE_PROPERTY);
111 recur = icalproperty_get_rrule(rrule);
112 iter = icalrecur_iterator_new(recur, cstart);
114 /* Add recurrences */
116 istart = icalrecur_iterator_next(iter);
117 if (icaltime_is_null_time(istart))
118 break; // no more instances
119 iend = icaltime_add(istart, length);
120 if (icaltime_compare(iend, start) <= 0)
121 continue; // instance ends before start time
122 if (icaltime_compare(istart, end) >= 0)
123 break; // instance begins after stop time
124 icalarray_append(array, &(ical_inst){
133 icalcomponent_kind find = ICAL_ANY_COMPONENT;
134 icalcomponent *child = icalcomponent_get_first_component(comp, find);
136 add_events(array, child, start, end);
137 child = icalcomponent_get_next_component(comp, find);
141 /* Event functions */
142 event_t *ical_events(cal_t *cal, year_t year, month_t month, day_t day, int days)
145 FILE *file = fopen("data/all.ics", "r");
148 icalparser *parser = icalparser_new();
149 icalparser_set_gen_data(parser, file);
150 icalcomponent *ical = icalparser_parse(parser, (void*)fgets);
153 icalarray *array = icalarray_new(sizeof(ical_inst), 1);
154 icaltimetype start = {.year = 2000};
155 icaltimetype end = {.year = 2020};
156 add_events(array, ical, start, end);
157 icalarray_sort(array, ical_compare);
158 return to_list(array);
160 /* Todo, memory management */
164 todo_t *ical_todos(cal_t *cal, year_t year, month_t month, day_t day, int days)
170 void ical_printr(icalcomponent *comp, int depth)
172 /* Print component */
173 icalcomponent_kind kind = icalcomponent_isa(comp);
174 printf("%*s", depth, "");
175 printf("%s", icalcomponent_kind_to_string(kind));
176 if (kind == ICAL_VEVENT_COMPONENT ||
177 kind == ICAL_VTODO_COMPONENT)
178 printf(" - %s", icalcomponent_get_summary(comp) ?: "[no summary]");
182 icalcomponent_kind find = ICAL_ANY_COMPONENT;
183 icalcomponent *child = icalcomponent_get_first_component(comp, find);
185 ical_printr(child, depth+2);
186 child = icalcomponent_get_next_component(comp, find);
193 FILE *file = fopen("data/all.ics", "r");
194 icalparser *parser = icalparser_new();
195 icalparser_set_gen_data(parser, file);
196 icalcomponent *ical = icalparser_parse(parser, (void*)fgets);
199 ical_printr(ical, 0);
202 icalarray *array = icalarray_new(sizeof(ical_inst), 1);
203 icaltimetype start = {.year = 2000};
204 icaltimetype end = {.year = 2020};
205 add_events(array, ical, start, end);
206 icalarray_sort(array, ical_compare);
207 event_t *events = to_list(array);
211 icalparser_free(parser);