void shape_datasource::init(shape_io& shape)
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "shape_datasource::init");
#endif
//first read header from *.shp
int file_code=shape.shp().read_xdr_integer();
if (file_code!=9994)
{
//invalid file code
throw datasource_exception("Shape Plugin: " + (boost::format("wrong file code : %d") % file_code).str());
}
shape.shp().skip(5*4);
file_length_=shape.shp().read_xdr_integer();
int version=shape.shp().read_ndr_integer();
if (version!=1000)
{
//invalid version number
throw datasource_exception("Shape Plugin: " + (boost::format("invalid version number: %d") % version).str());
}
shape_type_ = static_cast<shape_io::shapeType>(shape.shp().read_ndr_integer());
if (shape_type_ == shape_io::shape_multipatch)
throw datasource_exception("Shape Plugin: shapefile multipatch type is not supported");
shape.shp().read_envelope(extent_);
#ifdef MAPNIK_LOG
const double zmin = shape.shp().read_double();
const double zmax = shape.shp().read_double();
const double mmin = shape.shp().read_double();
const double mmax = shape.shp().read_double();
MAPNIK_LOG_DEBUG(shape) << "shape_datasource: Z min/max=" << zmin << "," << zmax;
MAPNIK_LOG_DEBUG(shape) << "shape_datasource: M min/max=" << mmin << "," << mmax;
#else
shape.shp().skip(4*8);
#endif
// check if we have an index file around
indexed_ = shape.has_index();
MAPNIK_LOG_DEBUG(shape) << "shape_datasource: Extent=" << extent_;
MAPNIK_LOG_DEBUG(shape) << "shape_datasource: File length=" << file_length_;
MAPNIK_LOG_DEBUG(shape) << "shape_datasource: Shape type=" << shape_type_;
}
void shape_datasource::init(shape_io& shape)
{
//first read header from *.shp
int file_code=shape.shp().read_xdr_integer();
if (file_code!=9994)
{
//invalid
throw datasource_exception("wrong file code");
}
shape.shp().skip(5*4);
file_length_=shape.shp().read_xdr_integer();
int version=shape.shp().read_ndr_integer();
if (version!=1000)
{
//invalid version number
throw datasource_exception("invalid version number");
}
int shape_type=shape.shp().read_ndr_integer();
shape.shp().read_envelope(extent_);
shape.shp().skip(4*8);
// check if we have an index file around
std::string index_name(shape_name_+".index");
std::ifstream file(index_name.c_str(),std::ios::in | std::ios::binary);
if (file)
{
indexed_=true;
file.close();
}
std::clog << extent_ << std::endl;
std::clog << "file_length=" << file_length_ << std::endl;
std::clog << "shape_type=" << shape_type << std::endl;
}
void setup_attributes(mapnik::context_ptr const& ctx,
std::set<std::string> const& names,
std::string const& shape_name,
shape_io & shape,
std::vector<int> & attr_ids)
{
std::set<std::string>::const_iterator pos = names.begin();
std::set<std::string>::const_iterator end = names.end();
for ( ;pos !=end; ++pos)
{
bool found_name = false;
for (int i = 0; i < shape.dbf().num_fields(); ++i)
{
if (shape.dbf().descriptor(i).name_ == *pos)
{
ctx->push(*pos);
attr_ids.push_back(i);
found_name = true;
break;
}
}
if (! found_name)
{
std::ostringstream s;
s << "no attribute '" << *pos << "' in '"
<< shape_name << "'. Valid attributes are: ";
std::vector<std::string> list;
for (int i = 0; i < shape.dbf().num_fields(); ++i)
{
list.push_back(shape.dbf().descriptor(i).name_);
}
s << boost::algorithm::join(list, ",") << ".";
throw mapnik::datasource_exception("Shape Plugin: " + s.str());
}
}
}
void shape_datasource::init(shape_io& shape) const
{
//first read header from *.shp
int file_code=shape.shp().read_xdr_integer();
if (file_code!=9994)
{
//invalid file code
throw datasource_exception("Shape Plugin: " + (boost::format("wrong file code : %d") % file_code).str());
}
shape.shp().skip(5*4);
file_length_=shape.shp().read_xdr_integer();
int version=shape.shp().read_ndr_integer();
if (version!=1000)
{
//invalid version number
throw datasource_exception("Shape Plugin: " + (boost::format("invalid version number: %d") % version).str());
}
shape_type_ = static_cast<shape_io::shapeType>(shape.shp().read_ndr_integer());
if (shape_type_ == shape_io::shape_multipatch)
throw datasource_exception("Shape Plugin: shapefile multipatch type is not supported");
shape.shp().read_envelope(extent_);
#ifdef MAPNIK_DEBUG
double zmin = shape.shp().read_double();
double zmax = shape.shp().read_double();
double mmin = shape.shp().read_double();
double mmax = shape.shp().read_double();
std::clog << "Shape Plugin: Z min/max " << zmin << "," << zmax << std::endl;
std::clog << "Shape Plugin: M min/max " << mmin << "," << mmax << "\n";
#else
shape.shp().skip(4*8);
#endif
// check if we have an index file around
indexed_ = shape.has_index();
//std::string index_name(shape_name_+".index");
//std::ifstream file(index_name.c_str(),std::ios::in | std::ios::binary);
//if (file)
//{
// indexed_=true;
// file.close();
//}
//else
//{
// std::clog << "### Notice: no .index file found for " + shape_name_ + ".shp, use the 'shapeindex' program to build an index for faster rendering\n";
//}
#ifdef MAPNIK_DEBUG
std::clog << "Shape Plugin: extent=" << extent_ << std::endl;
std::clog << "Shape Plugin: file_length=" << file_length_ << std::endl;
std::clog << "Shape Plugin: shape_type=" << shape_type_ << std::endl;
#endif
}
