Esempi in C++ (Cpp) per NODE_ARG_STR

Esempio n. 1

File: gdal_field_defn.cpp Progetto: jarped/node-gdal

Handle<Value> FieldDefn::New(const Arguments& args)
{
	HandleScope scope;

	if (!args.IsConstructCall()) {
		return NODE_THROW("Cannot call constructor as function, you need to use 'new' keyword");
	}

	if (args[0]->IsExternal()) {
		Local<External> ext = Local<External>::Cast(args[0]);
		void* ptr = ext->Value();
		FieldDefn *f = static_cast<FieldDefn *>(ptr);
		f->Wrap(args.This());
		return args.This();
	} else {
		std::string field_name("");
		std::string type_name("string");

		NODE_ARG_STR(0, "field name", field_name);
		NODE_ARG_STR(1, "field type", type_name);

		int field_type = getFieldTypeByName(type_name);
		if (field_type < 0) {
			return NODE_THROW("Unrecognized field type");
		}

		FieldDefn* def = new FieldDefn(new OGRFieldDefn(field_name.c_str(), static_cast<OGRFieldType>(field_type)));
		def->owned_ = true;
		def->Wrap(args.This());
	}

	return args.This();
}

Esempio n. 2

File: layer_fields.cpp Progetto: jarped/node-gdal

Handle<Value> LayerFields::indexOf(const Arguments& args)
{
	HandleScope scope;

	Handle<Object> parent = args.This()->GetHiddenValue(String::NewSymbol("parent_"))->ToObject();
	Layer *layer = ObjectWrap::Unwrap<Layer>(parent);
	if (!layer->get()) {
		return NODE_THROW("Layer object already destroyed");
	}

	OGRFeatureDefn *def = layer->get()->GetLayerDefn();
	if (!def) {
		return NODE_THROW("Layer has no layer definition set");
	}

	std::string name("");
	NODE_ARG_STR(0, "field name", name);

	return scope.Close(Integer::New(def->GetFieldIndex(name.c_str())));
}

Esempio n. 3

File: gdal_geometry.cpp Progetto: xkwangy/node-gdal

Handle<Value> Geometry::createFromWkt(const Arguments &args)
{
	HandleScope scope;

	std::string wkt_string;
	SpatialReference *srs = NULL;

	NODE_ARG_STR(0, "wkt", wkt_string);
	NODE_ARG_WRAPPED_OPT(1, "srs", SpatialReference, srs);

	char *wkt = (char*) wkt_string.c_str();
	OGRGeometry *geom = NULL;
	OGRSpatialReference *ogr_srs = NULL;
	if (srs) {
		ogr_srs = srs->get();
	}

	OGRErr err = OGRGeometryFactory::createFromWkt(&wkt, ogr_srs, &geom);
	if (err) {
		return NODE_THROW_OGRERR(err);
	}

	return scope.Close(Geometry::New(geom, true));
}