2019-09-10 14:58:26 +00:00
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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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import os
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class IODict(dict):
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def __init__(self, *args, **kwargs):
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# if first argument is 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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2019-09-17 09:50:06 +00:00
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d = IODict._from_any_string(args[0])
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2019-09-10 14:58:26 +00:00
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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 _load_and_decode(s, decoder, **kwargs):
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d = None
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try:
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if s.startswith('http://') or s.startswith('https://'):
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content = io_util.read_url(s)
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elif os.path.isfile(s):
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content = io_util.read_file(s)
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else:
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content = s
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2019-09-17 09:50:06 +00:00
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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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2019-09-10 14:58:26 +00:00
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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_and_save(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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2019-09-17 09:50:06 +00:00
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def _from_any_string(s, **kwargs):
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2019-09-10 14:58:26 +00:00
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d = None
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try:
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d = IODict.from_json(s, **kwargs)
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except ValueError:
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2019-09-17 09:50:06 +00:00
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try:
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2019-09-20 14:21:04 +00:00
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d = IODict.from_toml(s, **kwargs)
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2019-09-17 09:50:06 +00:00
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except ValueError:
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2019-09-20 14:21:04 +00:00
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try:
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d = IODict.from_yaml(s, **kwargs)
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except ValueError:
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d = None
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2019-09-10 14:58:26 +00:00
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return d
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@staticmethod
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def from_json(s, **kwargs):
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return IODict._load_and_decode(s,
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io_util.decode_json, **kwargs)
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2019-09-20 14:21:04 +00:00
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@staticmethod
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def from_toml(s, **kwargs):
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return IODict._load_and_decode(s,
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io_util.decode_toml, **kwargs)
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2019-09-17 09:50:06 +00:00
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@staticmethod
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def from_yaml(s, **kwargs):
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return IODict._load_and_decode(s,
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io_util.decode_yaml, **kwargs)
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2019-09-10 14:58:26 +00:00
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def to_json(self, filepath=None, **kwargs):
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return IODict._encode_and_save(self,
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encoder=io_util.encode_json,
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filepath=filepath, **kwargs)
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2019-09-17 09:50:06 +00:00
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2019-09-20 14:21:04 +00:00
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def to_toml(self, filepath=None, **kwargs):
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return IODict._encode_and_save(self,
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encoder=io_util.encode_toml,
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filepath=filepath, **kwargs)
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2019-09-17 09:50:06 +00:00
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def to_yaml(self, filepath=None, **kwargs):
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return IODict._encode_and_save(self,
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encoder=io_util.encode_yaml,
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filepath=filepath, **kwargs)
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