file.h

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/*
 *
 *    Copyright (c) 2014-2018
 *      SMASH Team
 *
 *    GNU General Public License (GPLv3 or later)
 *
 */

#ifndef SRC_INCLUDE_FILE_H_
#define SRC_INCLUDE_FILE_H_

#include <cerrno>
#include <cstdio>
#include <cstring>
#include <memory>
#include <stdexcept>
#include <string>

#include <boost/filesystem.hpp>

#include "cxx14compat.h"
#include "forwarddeclarations.h"

namespace smash {

struct FileDeleter {
  constexpr FileDeleter() = default;

  void operator()(std::FILE* f) const {
    if (f == nullptr) {
      return;
    }
    if (0 != std::fclose(f)) {
      throw std::runtime_error(std::strerror(errno));
    }
  }
};

using FilePtr = std::unique_ptr<std::FILE, FileDeleter>;

class RenamingFilePtr {
 public:
  RenamingFilePtr(const bf::path& filename, const std::string& mode);
  FILE* get();
  ~RenamingFilePtr();

 private:
  FILE* file_;
  bf::path filename_;
  bf::path filename_unfinished_;
};

FilePtr fopen(const bf::path& filename, const std::string& mode);

}  // namespace smash

#endif  // SRC_INCLUDE_FILE_H_