Program Listing for File exec_utils.hpp

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#pragma once
#ifndef UITSL_UTILITY_EXEC_UTILS_HPP_INCLUDE
#define UITSL_UTILITY_EXEC_UTILS_HPP_INCLUDE

#include <array>
#include <cstdio>
#include <iostream>
#include <memory>
#include <stdexcept>
#include <string>

namespace uitsl {

// adapted from https://stackoverflow.com/a/478960
inline std::string exec(const char* cmd) {
  std::array<char, 128> buffer;
  std::string result;
  std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
  if (!pipe) {
    throw std::runtime_error("popen() failed!");
  }
  while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) {
    result += buffer.data();
  }
  return result;
}

} // namespace uitsl

#endif // #ifndef UITSL_UTILITY_EXEC_UTILS_HPP_INCLUDE