memfile.h

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// Copyright 2010-2022 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#ifndef OR_TOOLS_BASE_MEMFILE_H_
#define OR_TOOLS_BASE_MEMFILE_H_
 
#include <cstdio>
#include <string>
#include <string_view>
 
class RegisteredMemFile {
 public:
  RegisteredMemFile(std::string_view filename, std::string_view data)
      : filename_(filename) {
    FILE* fp = std::fopen(filename_.c_str(), "w+");
    if (!fp) {
      std::perror("File opening failed");
      return;
    }
    std::fputs(std::string(data).c_str(), fp);
    std::fclose(fp);
  }
 
  ~RegisteredMemFile() { std::remove(filename_.c_str()); }
 
 private:
  const std::string filename_;
};
 
#endif  // OR_TOOLS_BASE_MEMFILE_H_