C++ header to run a command, and return a custom error if the command was not found.

programcheck.hpp

// MIT License

// Copyright (c) 2019 RoccoDev

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#ifndef PROGRAMCHECK_HPP
#define PROGRAMCHECK_HPP

#include <stdlib.h>
#include <iostream>

class ProgramChecker
{
  private:
    char *errorMessage;
    bool exitOnFailure;

  public:
    ProgramChecker(char *errorMessage, bool exitOnFailure)
    {
        this->errorMessage = errorMessage;
        this->exitOnFailure = exitOnFailure;
    }
    ~ProgramChecker() {}
    void run(char *command)
    {
        int result = system(command);
        
        // If the command wasn't found, the result will
        // be 0x7F00 on Unix and 1 on Windows
        if (result == 0x7F00 || result == 1)
        {
            std::cout << errorMessage;

            if (this->exitOnFailure)
            {
                exit(1);
            }
        }
    }
};

#endif