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#define _POSIX_C_SOURCE 199309L
#include <err.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <libical/ical.h>
#include <raylib.h>
// Unfortunately, 0 = Sunday.
int
weekday(int year, int month, int day)
{
struct tm tm = {
.tm_year = year - 1900,
.tm_mon = month - 1,
.tm_mday = day,
};
mktime(&tm);
return tm.tm_wday;
}
const char *maaned[] = {
"", "JANUAR", "FEBRUAR", "MARS", "APRIL", "MAI", "JUNI",
"JULI", "AUGUST", "SEPTEMBER", "OKTOBER", "NOVEMBER", "DESEMBER",
};
const char *ukedag[] = {
"SØNDAG", "MANDAG", "TIRSDAG", "ONSDAG", "TORSDAG", "FREDAG", "LØRDAG",
};
enum {
MAX_EVENTS = 64,
SIZEOF_TITLE = 256,
};
struct event {
int year;
int month;
int day;
int wday;
int hour;
int minute;
char title[SIZEOF_TITLE];
};
struct event the_events[MAX_EVENTS];
int num_events;
char *
read_stream(char *s, size_t size, void *d)
{
return fgets(s, (int)size, (FILE *)d);
}
void
load_the_events(void)
{
icalparser *p = icalparser_new();
assert(p);
FILE *f = fopen("events.ical", "r");
assert(f);
icalparser_set_gen_data(p, f);
for (;;) {
char *line = icalparser_get_line(p, read_stream);
if (!line) {
break;
}
icalcomponent *comp = icalparser_add_line(p, line);
if (!comp) {
continue;
}
for (icalcompiter i = icalcomponent_begin_component(
comp, ICAL_VEVENT_COMPONENT);
icalcompiter_deref(&i); icalcompiter_next(&i)) {
if (MAX_EVENTS <= num_events) {
warnx("MAX_EVENTS exceeded at %u", num_events);
break;
}
icalcomponent *c = icalcompiter_deref(&i);
struct icaltimetype dts = icalcomponent_get_dtstart(c);
const char *sum = icalcomponent_get_summary(c);
the_events[num_events].year = dts.year;
the_events[num_events].month = dts.month;
the_events[num_events].day = dts.day;
the_events[num_events].hour = dts.hour;
the_events[num_events].minute = dts.minute;
strncpy(the_events[num_events].title, sum,
SIZEOF_TITLE);
the_events[num_events].wday =
weekday(dts.year, dts.month, dts.day);
++num_events;
}
icalcomponent_free(comp);
}
icalparser_free(p);
}
const char *the_alphabet = "0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZÆØÅ"
"abcdefghijklmnopqrstuvwxyzæøå"
"!@#$%^&*()[];'\\:\"|,./<>?";
void
line(int x, int y, Font f, Color c, char *s)
{
DrawTextEx(f, s, (Vector2){x, y}, (float)f.baseSize, 2, c);
}
void
draw_hd(int x, int y, Font f, Color c, char *s)
{
DrawTextEx(f, s, (Vector2){x, y}, (float)f.baseSize, 2, c);
}
int
main(void)
{
load_the_events();
for (int i = 0; i < num_events; ++i) {
struct event *e = the_events + i;
printf("\t%2d %s %u. %s %02u:%02u %s\n", i, ukedag[e->wday],
e->day, maaned[e->month], e->hour, e->minute, e->title);
}
const int sw = 1920;
const int sh = 1080;
InitWindow(sw, sh, "opplysning");
SetTargetFPS(60);
int ncp = 0;
int *cp = LoadCodepoints(the_alphabet, &ncp);
Font font_h = LoadFontEx("font/adventpro-bold.ttf", 60, cp, ncp);
Font font_p = LoadFontEx("font/adventpro-semibold.ttf", 40, cp, ncp);
UnloadCodepoints(cp);
Color bg = RAYWHITE;
Color fg = BLACK;
Color hd = {0xf0, 0x4a, 0x00, 0xff};
while (!WindowShouldClose()) {
struct timespec now = {0};
clock_gettime(CLOCK_REALTIME, &now);
struct tm *ti = localtime(&now.tv_sec);
char ts[64] = {0};
snprintf(ts, sizeof(ts), "%02d:%02d", ti->tm_hour, ti->tm_min);
BeginDrawing();
ClearBackground(bg);
line(sw / 2 - 60, 0, font_h, fg, ts);
int y = 0;
int year = 0, month = 0, day = 0;
for (int i = 0; i < num_events; ++i) {
struct event *e = the_events + i;
if (year != e->year || month != e->month ||
day != e->day) {
year = e->year;
month = e->month;
day = e->day;
char s[64] = {0};
snprintf(s, sizeof(s), "%s %u. %s",
ukedag[e->wday], e->day,
maaned[e->month]);
line(20, y += 50, font_h, hd, s);
y += 20;
}
{
char s[64] = {0};
snprintf(s, sizeof(s), "%02u:%02u %s", e->hour,
e->minute, e->title);
line(25, y += 40, font_p, fg, s);
}
}
EndDrawing();
}
CloseWindow();
}
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