Method writeFile

src/librawspeed/io/FileWriter.cpp:41–78

FileWriter::FileWriter(const char *_filename) : mFilename(_filename) {}

void FileWriter::writeFile(Buffer* filemap, uint32_t size) {
  if (size > filemap->getSize())
    size = filemap->getSize();
#if defined(__unix__) || defined(__APPLE__)
  size_t bytes_written = 0;
  FILE *file;

  file = fopen(mFilename, "wb");
  if (file == nullptr)
    ThrowFIE("Could not open file.");

  const auto* const src = filemap->getData(0, filemap->getSize());
  bytes_written = fwrite(src, 1, size != 0 ? size : filemap->getSize(), file);
  fclose(file);
  if (size != bytes_written) {
    ThrowFIE("Could not write file.");
  }

#else // __unix__
  auto wFileName = widenFileName(mFilename);
  HANDLE file_h;  // File handle
  file_h =
      CreateFileW(wFileName.data(), GENERIC_WRITE, FILE_SHARE_WRITE, nullptr,
                  CREATE_ALWAYS, FILE_FLAG_SEQUENTIAL_SCAN, nullptr);
  if (file_h == INVALID_HANDLE_VALUE) {
    ThrowFIE("Could not open file.");
  }

  DWORD bytes_written;
  if (!WriteFile(file_h, filemap->getData(0, filemap->getSize()),
                 size ? size : filemap->getSize(), &bytes_written, nullptr)) {
    CloseHandle(file_h);
    ThrowFIE("Could not read file.");
  }
  CloseHandle(file_h);

#endif // __unix__
}

} // namespace rawspeed