mapnik/plugins/input/osm/dataset_deliverer.h

#include "osm.h"
#include <string>
#include <iostream>

using  namespace std;

class dataset_deliverer 
{
private:
    static osm_dataset* dataset; 
    static std::string last_bbox;
    static std::string last_filename;

public:
    static osm_dataset *load_from_file(const string&,const string&);
    static osm_dataset *load_from_url
        (const string&,const string&,const string&);

    static void release()
    {
        delete dataset;    
    }
};