108 lines
3.6 KiB
Python
108 lines
3.6 KiB
Python
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# -*- coding: utf-8 -*-
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from icalendar.compat import iteritems
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from icalendar.parser_tools import to_unicode
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from collections import OrderedDict
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def canonsort_keys(keys, canonical_order=None):
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"""Sorts leading keys according to canonical_order. Keys not specified in
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canonical_order will appear alphabetically at the end.
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"""
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canonical_map = {k: i for i, k in enumerate(canonical_order or [])}
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head = [k for k in keys if k in canonical_map]
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tail = [k for k in keys if k not in canonical_map]
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return sorted(head, key=lambda k: canonical_map[k]) + sorted(tail)
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def canonsort_items(dict1, canonical_order=None):
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"""Returns a list of items from dict1, sorted by canonical_order.
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"""
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return [(k, dict1[k]) for k
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in canonsort_keys(dict1.keys(), canonical_order)]
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class CaselessDict(OrderedDict):
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"""A dictionary that isn't case sensitive, and only uses strings as keys.
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Values retain their case.
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"""
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def __init__(self, *args, **kwargs):
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"""Set keys to upper for initial dict.
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"""
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super(CaselessDict, self).__init__(*args, **kwargs)
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for key, value in self.items():
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key_upper = to_unicode(key).upper()
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if key != key_upper:
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super(CaselessDict, self).__delitem__(key)
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self[key_upper] = value
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def __getitem__(self, key):
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key = to_unicode(key)
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return super(CaselessDict, self).__getitem__(key.upper())
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def __setitem__(self, key, value):
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key = to_unicode(key)
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super(CaselessDict, self).__setitem__(key.upper(), value)
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def __delitem__(self, key):
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key = to_unicode(key)
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super(CaselessDict, self).__delitem__(key.upper())
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def __contains__(self, key):
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key = to_unicode(key)
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return super(CaselessDict, self).__contains__(key.upper())
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def get(self, key, default=None):
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key = to_unicode(key)
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return super(CaselessDict, self).get(key.upper(), default)
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def setdefault(self, key, value=None):
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key = to_unicode(key)
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return super(CaselessDict, self).setdefault(key.upper(), value)
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def pop(self, key, default=None):
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key = to_unicode(key)
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return super(CaselessDict, self).pop(key.upper(), default)
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def popitem(self):
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return super(CaselessDict, self).popitem()
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def has_key(self, key):
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key = to_unicode(key)
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return super(CaselessDict, self).__contains__(key.upper())
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def update(self, *args, **kwargs):
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# Multiple keys where key1.upper() == key2.upper() will be lost.
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mappings = list(args) + [kwargs]
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for mapping in mappings:
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if hasattr(mapping, 'items'):
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mapping = iteritems(mapping)
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for key, value in mapping:
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self[key] = value
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def copy(self):
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return type(self)(super(CaselessDict, self).copy())
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def __repr__(self):
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return '%s(%s)' % (type(self).__name__, dict(self))
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def __eq__(self, other):
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return self is other or dict(self.items()) == dict(other.items())
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# A list of keys that must appear first in sorted_keys and sorted_items;
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# must be uppercase.
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canonical_order = None
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def sorted_keys(self):
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"""Sorts keys according to the canonical_order for the derived class.
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Keys not specified in canonical_order will appear at the end.
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"""
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return canonsort_keys(self.keys(), self.canonical_order)
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def sorted_items(self):
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"""Sorts items according to the canonical_order for the derived class.
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Items not specified in canonical_order will appear at the end.
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"""
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return canonsort_items(self, self.canonical_order)
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