Method LocalWriteFile

bolt/common/file/File.cpp:264–294

}

LocalWriteFile::LocalWriteFile(
    std::string_view path,
    bool shouldCreateParentDirectories,
    bool shouldThrowOnFileAlreadyExists) {
  auto dir = fs::path(path).parent_path();
  if (shouldCreateParentDirectories && !fs::exists(dir)) {
    BOLT_CHECK(
        common::generateFileDirectory(dir.c_str()),
        "Failed to generate file directory");
  }

  std::unique_ptr<char[]> buf(new char[path.size() + 1]);
  buf[path.size()] = 0;
  memcpy(buf.get(), path.data(), path.size());
  {
    if (shouldThrowOnFileAlreadyExists) {
      FILE* exists = fopen(buf.get(), "rb");
      if (exists) {
        fclose(exists);
        BOLT_FAIL("Failure in LocalWriteFile: path '{}' already exists.", path);
      }
    }
  }
  auto* file = fopen(buf.get(), "ab");
  BOLT_CHECK_NOT_NULL(
      file,
      "fopen failure in LocalWriteFile constructor, {} {}.",
      path,
      folly::errnoStr(errno));
  file_ = file;
}

LocalWriteFile::~LocalWriteFile() {
  try {