| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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. |
| |
| import sys |
| |
| |
| def encode_file_path(path): |
| if isinstance(path, str): |
| # POSIX systems can handle utf-8. UTF8 is converted to utf16-le in |
| # libarrow |
| encoded_path = path.encode('utf-8') |
| else: |
| encoded_path = path |
| |
| # Windows file system requires utf-16le for file names; Arrow C++ libraries |
| # will convert utf8 to utf16 |
| return encoded_path |
| |
| |
| if sys.version_info >= (3, 7): |
| # Starting with Python 3.7, dicts are guaranteed to be insertion-ordered. |
| ordered_dict = dict |
| else: |
| import collections |
| ordered_dict = collections.OrderedDict |
| |
| |
| try: |
| import pickle5 as builtin_pickle |
| except ImportError: |
| import pickle as builtin_pickle |
| |
| |
| try: |
| import cloudpickle as pickle |
| except ImportError: |
| pickle = builtin_pickle |
| |
| |
| def tobytes(o): |
| if isinstance(o, str): |
| return o.encode('utf8') |
| else: |
| return o |
| |
| |
| def frombytes(o, *, safe=False): |
| if safe: |
| return o.decode('utf8', errors='replace') |
| else: |
| return o.decode('utf8') |