问在Windows上执行进程并获得结果

EN

namespace {
    FILE* really_popen(const char* cmd, const char* mode) {
#ifdef _MSC_VER
        return _popen(cmd, mode);
#else
        return popen(cmd, mode);
#endif
    }
    void really_pclose(FILE* pipe) {
#ifdef _MSC_VER
        _pclose(pipe);
#else
        pclose(pipe);
#endif
    }
    std::string ExecuteProcess(std::string cmd) {
        FILE* pipe = really_popen(cmd.c_str(), "r");
        if (!pipe) throw std::runtime_error("Could not invoke command " + cmd);
        char buffer[128];
        std::string result = "";
        while(!feof(pipe)) {
            if(fgets(buffer, 128, pipe) != NULL)
                result += buffer;
        }
        really_pclose(pipe);
        return result;
    }
}