Handle<Value> MemoryDatasource::New(const Arguments& args)
{
HandleScope scope;
if (!args.IsConstructCall())
return ThrowException(String::New("Cannot call constructor as function, you need to use 'new' keyword"));
if (args[0]->IsExternal())
{
//std::clog << "external!\n";
Local<External> ext = Local<External>::Cast(args[0]);
void* ptr = ext->Value();
MemoryDatasource* d = static_cast<MemoryDatasource*>(ptr);
d->Wrap(args.This());
return args.This();
}
if (args.Length() != 1){
return ThrowException(Exception::TypeError(
String::New("accepts only one argument, an object of key:value datasource options")));
}
if (!args[0]->IsObject())
return ThrowException(Exception::TypeError(
String::New("Must provide an object, eg {type: 'shape', file : 'world.shp'}")));
Local<Object> options = args[0]->ToObject();
mapnik::parameters params;
Local<Array> names = options->GetPropertyNames();
unsigned int i = 0;
unsigned int a_length = names->Length();
while (i < a_length) {
Local<Value> name = names->Get(i)->ToString();
Local<Value> value = options->Get(name);
params[TOSTR(name)] = TOSTR(value);
i++;
}
//memory_datasource cache;
MemoryDatasource* d = new MemoryDatasource();
d->Wrap(args.This());
d->datasource_ = MAPNIK_MAKE_SHARED<mapnik::memory_datasource>();
return args.This();
}
Handle<Value> MemoryDatasource::New(const Arguments& args)
{
HandleScope scope;
if (!args.IsConstructCall())
return ThrowException(String::New("Cannot call constructor as function, you need to use 'new' keyword"));
if (args[0]->IsExternal())
{
//std::clog << "external!\n";
Local<External> ext = Local<External>::Cast(args[0]);
void* ptr = ext->Value();
MemoryDatasource* d = static_cast<MemoryDatasource*>(ptr);
d->Wrap(args.This());
return args.This();
}
if (!args.Length() == 1){
return ThrowException(Exception::TypeError(
String::New("accepts only one argument, an object of key:value datasource options")));
}
if (!args[0]->IsObject())
return ThrowException(Exception::TypeError(
String::New("must provide an object, eg {type: 'shape', file : 'world.shp'}")));
Local<Object> options = args[0]->ToObject();
// TODO - maybe validate in js?
bool bind=true;
if (options->Has(String::New("bind")))
{
Local<Value> bind_opt = options->Get(String::New("bind"));
if (!bind_opt->IsBoolean())
return ThrowException(Exception::TypeError(
String::New("'bind' must be a Boolean")));
bind = bind_opt->BooleanValue();
}
mapnik::parameters params;
Local<Array> names = options->GetPropertyNames();
uint32_t i = 0;
uint32_t a_length = names->Length();
while (i < a_length) {
Local<Value> name = names->Get(i)->ToString();
Local<Value> value = options->Get(name);
params[TOSTR(name)] = TOSTR(value);
i++;
}
//memory_datasource cache;
mapnik::datasource_ptr ds(new mapnik::memory_datasource());
MemoryDatasource* d = new MemoryDatasource();
d->Wrap(args.This());
d->datasource_ = ds;
return args.This();
return Undefined();
}
