RunoffInterface.hpp

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#ifndef OPENSWMM_RUNOFF_INTERFACE_HPP
#define OPENSWMM_RUNOFF_INTERFACE_HPP
 
#include <string>
#include <vector>
#include <cstdio>
 
namespace openswmm {
 
struct SimulationContext;
 
namespace runoff_iface {
 
static constexpr int N_FIXED_RESULTS = 8;  
static const char FILE_STAMP[] = "SWMM5-RUNOFF";

class RunoffInterfaceFile {
public:
    ~RunoffInterfaceFile() { close(); }

    int openForWrite(const std::string& path, int n_subcatch, int n_pollut,
                     int flow_units);

    int openForRead(const std::string& path, int n_subcatch, int n_pollut,
                    int flow_units);

    void saveResults(const SimulationContext& ctx, double dt);

    bool readResults(SimulationContext& ctx, double* dt_out = nullptr);

    void close();
 
    bool isOpen() const { return fp_ != nullptr; }
 
private:
    std::FILE* fp_ = nullptr;
    bool writing_ = false;
    int n_subcatch_ = 0;
    int n_pollut_ = 0;
    int n_results_ = 0;       
    int flow_units_ = 0;      
    int unit_system_ = 0;     
    int step_count_ = 0;
    long max_steps_pos_ = 0;   
    std::vector<float> buf_;   
};
 
} // namespace runoff_iface
} // namespace openswmm
 
#endif // OPENSWMM_RUNOFF_INTERFACE_HPP