void
NMEAInfo::ProvideDate(const BrokenDate &date)
{
assert(date.IsPlausible());
(BrokenDate &)date_time_utc = date;
}
static bool
IGCParseDate(const char *buffer, BrokenDate &date)
{
unsigned day, month, year;
if (sscanf(buffer, "%02u%02u%02u", &day, &month, &year) != 3)
return false;
date = BrokenDate(year + 2000, month, day);
return date.IsPlausible();
}
bool
IGCParseDateRecord(const char *line, BrokenDate &date)
{
if (memcmp(line, "HFDTE", 5) != 0)
return false;
line += 5;
char *endptr;
unsigned long value = strtoul(line, &endptr, 10);
if (endptr != line + 6)
return false;
date.year = 1990 + (value + 10) % 100; /* Y2090 bug! */
date.month = (value / 100) % 100;
date.day = value / 10000;
return date.IsPlausible();
}
static bool
ReadDate(NMEAInputLine &line, BrokenDate &date)
{
char buffer[16];
line.Read(buffer, sizeof(buffer));
char *p = buffer, *endptr;
date.day = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != '.')
return false;
p = endptr + 1;
date.month = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != '.')
return false;
p = endptr + 1;
date.year = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != 0)
return false;
return date.IsPlausible();
}
static void
TestBasic()
{
WrapClock w;
w.Reset();
BrokenDate date = BrokenDate::Invalid();
ok1(equals(Normalise(w, date, 0, 1), 60));
ok1(!date.IsPlausible());
ok1(equals(Normalise(w, date, 12, 0), 12 * 3600));
ok1(!date.IsPlausible());
/* time warp */
ok1(equals(Normalise(w, date, 1, 0), 3600));
ok1(!date.IsPlausible());
/* seek right before midnight and produce a midnight wraparound */
ok1(equals(Normalise(w, date, 23, 50), 23 * 3600 + 50 * 60));
ok1(!date.IsPlausible());
ok1(equals(Normalise(w, date, 0, 10), 24 * 3600 + 10 * 60));
ok1(!date.IsPlausible());
/* .. and another one */
ok1(equals(Normalise(w, date, 23, 50), 47 * 3600 + 50 * 60));
ok1(!date.IsPlausible());
ok1(equals(Normalise(w, date, 0, 10), 48 * 3600 + 10 * 60));
ok1(!date.IsPlausible());
/* inject a valid date */
date = BrokenDate(2013, 5, 14);
BrokenDate expected_date = date;
ok1(equals(Normalise(w, date, 0, 10), 48 * 3600 + 10 * 60));
ok1(date == expected_date);
/* same day */
date = BrokenDate(2013, 5, 14);
ok1(equals(Normalise(w, date, 0, 20), 48 * 3600 + 20 * 60));
ok1(date == expected_date);
/* next day */
expected_date = date = BrokenDate(2013, 5, 15);
ok1(equals(Normalise(w, date, 0, 10), 72 * 3600 + 10 * 60));
ok1(date == expected_date);
/* fast-forward 3 days */
expected_date = date = BrokenDate(2013, 5, 18);
ok1(equals(Normalise(w, date, 0, 10), 144 * 3600 + 10 * 60));
ok1(date == expected_date);
/* back one day */
expected_date = date = BrokenDate(2013, 5, 17);
ok1(equals(Normalise(w, date, 0, 10), 10 * 60));
ok1(date == expected_date);
/* fast-forward 2 days */
expected_date = date = BrokenDate(2013, 5, 19);
ok1(equals(Normalise(w, date, 0, 10), 48 * 3600 + 10 * 60));
ok1(date == expected_date);
/* back to invalid date */
date = BrokenDate::Invalid();
ok1(equals(Normalise(w, date, 0, 20), 48 * 3600 + 20 * 60));
ok1(!date.IsPlausible());
/* produce a wraparound and then recover date */
ok1(equals(Normalise(w, date, 23, 50), 71 * 3600 + 50 * 60));
ok1(equals(Normalise(w, date, 0, 10), 72 * 3600 + 10 * 60));
ok1(equals(Normalise(w, date, 0, 20), 72 * 3600 + 20 * 60));
ok1(!date.IsPlausible());
expected_date = date = BrokenDate(2013, 5, 20);
ok1(equals(Normalise(w, date, 0, 20), 72 * 3600 + 20 * 60));
ok1(date == expected_date);
/* back to invalid date, wraparound and then recover with warped
date (resets the WrapClock) */
date = BrokenDate::Invalid();
ok1(equals(Normalise(w, date, 0, 20), 72 * 3600 + 20 * 60));
ok1(equals(Normalise(w, date, 23, 50), 95 * 3600 + 50 * 60));
ok1(equals(Normalise(w, date, 0, 10), 96 * 3600 + 10 * 60));
ok1(!date.IsPlausible());
expected_date = date = BrokenDate(2013, 5, 20);
ok1(equals(Normalise(w, date, 0, 20), 20 * 60));
ok1(date == expected_date);
/* wrap midnight, but don't increment date - WrapClock must
increment the date automatically */
w.Reset();
expected_date = date = BrokenDate(2013, 2, 28);
ok1(equals(Normalise(w, date, 23, 55), 23 * 3600 + 55 * 60));
ok1(date == expected_date);
expected_date = BrokenDate(2013, 3, 1);
ok1(equals(Normalise(w, date, 0, 5), 24 * 3600 + 5 * 60));
ok1(date == expected_date);
}