PipeVar.hpp

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#pragma once
 
#include <string>
#include <variant>
#include <iostream>
#include <cstdio>
 
#include "basic_types.hpp"
#include "pipe.hpp"
 
namespace subprocess {
    enum class PipeVarIndex {
        option,
        string,
        handle,
        istream,
        ostream,
        file
    };
 
    typedef std::variant<PipeOption, std::string, PipeHandle,
        std::istream*, std::ostream*, FILE*> PipeVar;
 
 
    inline PipeOption get_pipe_option(const PipeVar& option) {
        PipeVarIndex index = static_cast<PipeVarIndex>(option.index());
 
        switch(index) {
        case PipeVarIndex::option:  return std::get<PipeOption>(option);
        case PipeVarIndex::handle:  return PipeOption::specific;
        default:                    return PipeOption::pipe;
        }
    }
}