ConstellationDefinition ConstellationSet::findCD( const gpstk::DayTime dt ) const
throw(NoConstellationFound)
{
DayTime localDT = dt;
localDT.setSecOfDay( (DayTime::SEC_DAY/2) ); // Set to noon to match CDs
// Best case (hopefully nominal) is that there is a definition
// available for the date in question.
CI ci = cdMap.find(localDT);
//cout << "Found in map: " << ci->first << endl;
if (ci==cdMap.end())
{
// If no, first check to see whether date in question is later
// than any date available.
if (localDT>getLatestDate())
{
ConstellationSet::NoConstellationFound exc("All Constellation Definitions Too Early");
GPSTK_THROW(exc);
}
// If not, start at the day of interest and back up until we
// find a definition or hit the earliest definition
bool done = false;
localDT -= DayTime::SEC_DAY;
while (!done && localDT > getEarliestDate() )
{
ci = cdMap.find(localDT);
if (ci!=cdMap.end()) done = true;
localDT -= DayTime::SEC_DAY;
}
// Did not find one before reaching the "head" of the list
if (!done)
{
ConstellationSet::NoConstellationFound exc("All Constellation Definitions Too Late");
GPSTK_THROW(exc);
}
}
ConstellationDefinition cd = ci->second;
return(cd);
}
gpstk::DayTime ConstellationSet::parseDate(string date)
throw(InvalidDateString)
{
string whitespace = " \t\r\n";
string::size_type end = date.find_last_not_of(whitespace);
string::size_type front = date.find("STATUS");
front = date.find_first_not_of(whitespace, front+6);
string dateString = date.substr(front, end-front+1);
DayTime dt;
try
{
//cout << dateString << endl;
dt.setToString(dateString, "%d %b %Y");
dt.setSecOfDay( (DayTime::SEC_DAY/2) );
return dt;
}
catch(DayTime::DayTimeException exc)
{
string s = "Invalid date: '" + dateString + "'";
//cout << s << endl;
ConstellationSet::InvalidDateString excids(s);
GPSTK_THROW(excids);
}
}
