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# -*- coding: utf-8 -*- |
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from benedict.utils import io_util |
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from six import string_types, text_type |
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class IODict(dict): |
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def __init__(self, *args, **kwargs): |
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# if first argument is data-string, |
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# try to decode it using all decoders. |
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if len(args) and isinstance(args[0], string_types): |
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d = IODict._from_any_data_string(args[0]) |
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if d and isinstance(d, dict): |
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args = list(args) |
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args[0] = d |
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args = tuple(args) |
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else: |
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raise ValueError('Invalid string data input.') |
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super(IODict, self).__init__(*args, **kwargs) |
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@staticmethod |
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def _decode(s, decoder, **kwargs): |
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d = None |
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try: |
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content = io_util.read_content(s) |
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# decode content using the given decoder |
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data = decoder(content, **kwargs) |
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if isinstance(data, dict): |
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d = data |
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elif isinstance(data, list): |
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# force list to dict |
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d = { 'values':data } |
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else: |
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raise ValueError( |
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'Invalid data type: {}, expected dict or list.'.format(type(data))) |
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except Exception as e: |
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raise ValueError( |
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'Invalid data or url or filepath input argument: {}\n{}'.format(s, text_type(e))) |
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return d |
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@staticmethod |
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def _encode(d, encoder, filepath=None, **kwargs): |
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s = encoder(d, **kwargs) |
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if filepath: |
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io_util.write_file(filepath, s) |
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return s |
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@staticmethod |
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def _from_any_data_string(s, **kwargs): |
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try: |
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d = IODict.from_base64(s, **kwargs) |
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return d |
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except ValueError: |
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pass |
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try: |
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d = IODict.from_json(s, **kwargs) |
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return d |
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except ValueError: |
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pass |
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try: |
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d = IODict.from_toml(s, **kwargs) |
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return d |
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except ValueError: |
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pass |
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try: |
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d = IODict.from_xml(s, **kwargs) |
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return d |
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except ValueError: |
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pass |
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try: |
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d = IODict.from_yaml(s, **kwargs) |
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return d |
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except ValueError: |
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pass |
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@staticmethod |
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def from_base64(s, **kwargs): |
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return IODict._decode(s, |
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decoder=io_util.decode_base64, **kwargs) |
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@staticmethod |
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def from_json(s, **kwargs): |
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return IODict._decode(s, |
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decoder=io_util.decode_json, **kwargs) |
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@staticmethod |
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def from_toml(s, **kwargs): |
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return IODict._decode(s, |
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decoder=io_util.decode_toml, **kwargs) |
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@staticmethod |
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def from_xml(s, **kwargs): |
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return IODict._decode(s, |
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decoder=io_util.decode_xml, **kwargs) |
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@classmethod |
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def from_yaml(cls, s, **kwargs): |
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return IODict._decode(s, |
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decoder=io_util.decode_yaml, **kwargs) |
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def to_base64(self, filepath=None, **kwargs): |
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return IODict._encode(self, |
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encoder=io_util.encode_base64, |
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filepath=filepath, **kwargs) |
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def to_json(self, filepath=None, **kwargs): |
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return IODict._encode(self, |
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encoder=io_util.encode_json, |
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filepath=filepath, **kwargs) |
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def to_toml(self, filepath=None, **kwargs): |
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return IODict._encode(self, |
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encoder=io_util.encode_toml, |
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filepath=filepath, **kwargs) |
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def to_xml(self, filepath=None, **kwargs): |
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return IODict._encode(self, |
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encoder=io_util.encode_xml, |
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filepath=filepath, **kwargs) |
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def to_yaml(self, filepath=None, **kwargs): |
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return IODict._encode(self, |
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encoder=io_util.encode_yaml, |
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filepath=filepath, **kwargs) |
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fabiocaccamo /
python-benedict
