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/** @file latlongcoord.cc
* @brief Latitude and longitude representations.
*/
/* Copyright 2008 Lemur Consulting Ltd
* Copyright 2011 Richard Boulton
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#include <config.h>
#include "xapian/geospatial.h"
#include "xapian/error.h"
#include "geoencode.h"
#include "str.h"
#include <cmath>
using namespace Xapian;
using namespace std;
LatLongCoord::LatLongCoord(double latitude_, double longitude_)
: latitude(latitude_),
longitude(longitude_)
{
if (latitude < -90.0 || latitude > 90.0)
throw InvalidArgumentError("Latitude out-of-range");
longitude = fmod(longitude_, 360);
if (longitude < 0) longitude += 360;
}
void
LatLongCoord::unserialise(const string & serialised)
{
const char * ptr = serialised.data();
const char * end = ptr + serialised.size();
unserialise(&ptr, end);
if (ptr != end)
throw SerialisationError(
"Junk found at end of serialised LatLongCoord");
}
void
LatLongCoord::unserialise(const char ** ptr, const char * end)
{
size_t len = end - *ptr;
if (len < 2) {
latitude = 0;
longitude = 0;
return;
}
GeoEncode::decode(*ptr, end - *ptr, latitude, longitude);
if (len < 6) {
*ptr = end;
} else {
*ptr += 6;
}
}
string
LatLongCoord::serialise() const
{
string result;
GeoEncode::encode(latitude, longitude, result);
return result;
}
string
LatLongCoord::get_description() const
{
string res("Xapian::LatLongCoord(");
res += str(latitude);
res += ", ";
res += str(longitude);
res += ")";
return res;
}
void
LatLongCoords::unserialise(const string & serialised)
{
const char * ptr = serialised.data();
const char * end_ptr = ptr + serialised.size();
coords.clear();
while (ptr != end_ptr) {
coords.push_back(LatLongCoord());
coords.back().unserialise(&ptr, end_ptr);
}
if (ptr != end_ptr) {
throw SerialisationError("Junk found at end of serialised "
"LatLongCoords");
}
}
string
LatLongCoords::serialise() const
{
string result;
vector<LatLongCoord>::const_iterator coord;
for (coord = coords.begin(); coord != coords.end(); ++coord)
{
GeoEncode::encode(coord->latitude, coord->longitude, result);
}
return result;
}
string
LatLongCoords::get_description() const
{
string res("Xapian::LatLongCoords(");
vector<LatLongCoord>::const_iterator coord;
for (coord = coords.begin(); coord != coords.end(); ++coord) {
if (coord != coords.begin()) {
res += ", ";
}
res += "(";
res += str(coord->latitude);
res += ", ";
res += str(coord->longitude);
res += ")";
}
res += ")";
return res;
}
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