size_t fromString(PVScalarArrayPtr const &pv, StringArray const & from, size_t fromStartIndex = 0)
{
int processed = 0;
size_t fromValueCount = from.size();
// first get count
if (fromStartIndex >= fromValueCount)
throw std::runtime_error("not enough of values");
size_t count;
istringstream iss(from[fromStartIndex]);
iss >> count;
// not fail and entire value is parsed (e.g. to detect 1.2 parsing to 1)
if (iss.fail() || !iss.eof())
throw runtime_error("failed to parse element count value (uint) of field '" + pv->getFieldName() + "' from string value '" + from[fromStartIndex] + "'");
fromStartIndex++;
processed++;
if ((fromStartIndex+count) > fromValueCount)
{
throw runtime_error("not enough array values for field " + pv->getFieldName());
}
PVStringArray::svector valueList(count);
std::copy(from.begin() + fromStartIndex, from.begin() + fromStartIndex + count, valueList.begin());
processed += count;
pv->putFrom<string>(freeze(valueList));
return processed;
}
