// GPS
//
// Douglas Thrift
//
// $Id$

#include <cerrno>
#include <iostream>
#include <sstream>

#include <posix.hpp>

#include "GPS.hpp"

namespace GPS
{

Error::Error()
{
	std::ostringstream message;

	message << _B("GPS[#") << errno << _B("] ");

	switch (errno)
	{
	case NL_NOSERVICE:
		message << _B("can't get service entry");

		break;
	case NL_NOHOST:
		message << _B("can't get host entry");

		break;
	case NL_NOPROTO:
		message << _B("can't get protocol entry");

		break;
	case NL_NOSOCK:
		message << _B("can't create socket");

		break;
	case NL_NOSOCKOPT:
		message << _B("error SETSOCKOPT SO_REUSEADDR");

		break;
	case NL_NOCONNECT:
		message << _B("can't connect to host");

		break;
	}

	this->message = message.str();
}

GPS::GPS(const std::string &host, const std::string &port) : gps(::gps_open(host.c_str(), port.c_str()))
{
	if (gps == NULL)
		throw Error();
}

void GPS::Poll()
{
	Posix::CheckError(::gps_poll(gps));
}

void GPS::Query(const std::string &query)
{
	Posix::CheckError(::gps_query(gps, query.c_str()));
}

}