ExternalCommand.h

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/*
** This file is part of eOn.
**
** SPDX-License-Identifier: BSD-3-Clause
**
** Copyright (c) 2010--present, eOn Development Team
** All rights reserved.
**
** Repo:
** https://github.com/TheochemUI/eOn
*/
#pragma once
 
#include <cstdlib>
#include <stdexcept>
#include <string>
 
#ifndef _WIN32
#include <sys/wait.h>
#endif
 
namespace eonc::pot {

[[nodiscard]] inline std::string commandFailure(int status) {
  if (status == -1) {
    return "could not be started";
  }
#ifndef _WIN32
  if (WIFSIGNALED(status)) {
    return "died on signal " + std::to_string(WTERMSIG(status));
  }
  if (!WIFEXITED(status)) {
    return "terminated abnormally";
  }
  if (WEXITSTATUS(status) != 0) {
    return "exited with status " + std::to_string(WEXITSTATUS(status));
  }
#else
  if (status != 0) {
    return "exited with status " + std::to_string(status);
  }
#endif
  return {};
}

inline void runOrThrow(const std::string &command) {
  const std::string reason = commandFailure(std::system(command.c_str()));
  if (!reason.empty()) {
    throw std::runtime_error("Command \"" + command + "\" " + reason);
  }
}
 
} // namespace eonc::pot