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# -*- coding: utf-8 -*- |
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from benedict.utils import keypath_util |
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class KeypathDict(dict): |
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def __init__(self, *args, **kwargs): |
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self._keypath_separator = kwargs.pop('keypath_separator', None) \ |
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if 'keypath_separator' in kwargs else '.' |
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super(KeypathDict, self).__init__(*args, **kwargs) |
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self._check_keys(self) |
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def _check_keys(self, d): |
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keys = keypath_util.all_keys(d) |
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keypath_util.check_keys(keys, self._keypath_separator) |
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def _follow_keys(self, keys): |
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return keypath_util.follow_keys(self, keys) |
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def _join_keys(self, keys): |
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return keypath_util.join_keys(keys, self._keypath_separator) |
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def _split_keys(self, key): |
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return keypath_util.split_keys(key, self._keypath_separator) |
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def __contains__(self, key): |
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keys = self._split_keys(key) |
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if len(keys) > 1: |
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item_parent, item_key = self._follow_keys(keys) |
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if isinstance(item_parent, dict): |
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if item_parent.__contains__(item_key): |
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return True |
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else: |
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return False |
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else: |
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return False |
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else: |
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return super(KeypathDict, self).__contains__(key) |
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def __delitem__(self, key): |
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keys = self._split_keys(key) |
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if len(keys) > 1: |
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item_parent, item_key = self._follow_keys(keys) |
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if isinstance(item_parent, dict): |
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item_parent.__delitem__(item_key) |
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else: |
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raise KeyError |
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else: |
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super(KeypathDict, self).__delitem__(key) |
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def __getitem__(self, key): |
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keys = self._split_keys(key) |
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value = None |
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if len(keys) > 1: |
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item_parent, item_key = self._follow_keys(keys) |
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if isinstance(item_parent, dict): |
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return item_parent.__getitem__(item_key) |
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else: |
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raise KeyError |
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else: |
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value = super(KeypathDict, self).__getitem__(key) |
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return value |
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def __setitem__(self, key, value): |
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if isinstance(value, dict): |
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self._check_keys(value) |
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keys = self._split_keys(key) |
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if len(keys) > 1: |
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i = 0 |
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j = len(keys) |
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item = self |
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while i < j: |
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key = keys[i] |
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if i < (j - 1): |
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if item is self: |
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subitem = super(KeypathDict, self).get(key, None) |
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else: |
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subitem = item.get(key, None) |
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if not isinstance(subitem, dict): |
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subitem = item[key] = {} |
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item = subitem |
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else: |
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item[key] = value |
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i += 1 |
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else: |
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super(KeypathDict, self).__setitem__(key, value) |
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@classmethod |
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def fromkeys(cls, sequence, value=None): |
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d = KeypathDict() |
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for key in sequence: |
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d[key] = value |
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return d |
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def get(self, key, default=None): |
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keys = self._split_keys(key) |
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if len(keys) > 1: |
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item_parent, item_key = self._follow_keys(keys) |
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if isinstance(item_parent, dict): |
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return item_parent.get(item_key, default) |
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else: |
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return default |
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else: |
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return super(KeypathDict, self).get(key, default) |
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def keypaths(self): |
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if not self._keypath_separator: |
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return [] |
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def walk_keypaths(root, path): |
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keypaths = [] |
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for key, value in root.items(): |
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keys = path + [key] |
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keypaths += [self._join_keys(keys)] |
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if isinstance(value, dict): |
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keypaths += walk_keypaths(value, keys) |
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return keypaths |
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keypaths = walk_keypaths(self, []) |
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keypaths.sort() |
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return keypaths |
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def pop(self, key, *args, **kwargs): |
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if kwargs and 'default' in kwargs: |
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default_arg = True |
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default = kwargs.get('default', None) |
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elif args: |
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default_arg = True |
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default = args[0] |
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else: |
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default_arg = False |
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default = None |
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keys = self._split_keys(key) |
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if len(keys) > 1: |
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item_parent, item_key = self._follow_keys(keys) |
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if isinstance(item_parent, dict): |
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if default_arg: |
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return item_parent.pop(item_key, default) |
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else: |
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return item_parent.pop(item_key) |
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else: |
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if default_arg: |
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return default |
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else: |
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raise KeyError |
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else: |
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if default_arg: |
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return super(KeypathDict, self).pop(key, default) |
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else: |
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return super(KeypathDict, self).pop(key) |
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def set(self, key, value): |
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self.__setitem__(key, value) |
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def setdefault(self, key, default=None): |
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if key not in self: |
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self.__setitem__(key, default) |
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return default |
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else: |
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return self.__getitem__(key) |
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def update(self, other): |
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if isinstance(other, dict): |
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self._check_keys(other) |
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super(KeypathDict, self).update(other) |
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fabiocaccamo /
python-benedict
