Function UnalignBuffers

cpp/src/arrow/testing/gtest_util.cc:1252–1271

}

std::shared_ptr<ArrayData> UnalignBuffers(const ArrayData& array) {
  std::vector<std::shared_ptr<Buffer>> new_buffers;
  new_buffers.reserve(array.buffers.size());

  for (const auto& buffer : array.buffers) {
    if (!buffer) {
      new_buffers.emplace_back();
      continue;
    }
    EXPECT_OK_AND_ASSIGN(std::shared_ptr<Buffer> padded,
                         AllocateBuffer(buffer->size() + 1, default_memory_pool()));
    memcpy(padded->mutable_data() + 1, buffer->data(), buffer->size());
    std::shared_ptr<Buffer> unaligned = SliceBuffer(padded, 1);
    new_buffers.push_back(std::move(unaligned));
  }

  std::shared_ptr<ArrayData> array_data = std::make_shared<ArrayData>(array);
  array_data->buffers = std::move(new_buffers);
  return array_data;
}

std::shared_ptr<Array> UnalignBuffers(const Array& array) {
  std::shared_ptr<ArrayData> array_data = UnalignBuffers(*array.data());