/usr/lib/python3/dist-packages/html5lib/_trie/py.py is in python3-html5lib 0.999999999-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | from __future__ import absolute_import, division, unicode_literals
from six import text_type
from bisect import bisect_left
from ._base import Trie as ABCTrie
class Trie(ABCTrie):
def __init__(self, data):
if not all(isinstance(x, text_type) for x in data.keys()):
raise TypeError("All keys must be strings")
self._data = data
self._keys = sorted(data.keys())
self._cachestr = ""
self._cachepoints = (0, len(data))
def __contains__(self, key):
return key in self._data
def __len__(self):
return len(self._data)
def __iter__(self):
return iter(self._data)
def __getitem__(self, key):
return self._data[key]
def keys(self, prefix=None):
if prefix is None or prefix == "" or not self._keys:
return set(self._keys)
if prefix.startswith(self._cachestr):
lo, hi = self._cachepoints
start = i = bisect_left(self._keys, prefix, lo, hi)
else:
start = i = bisect_left(self._keys, prefix)
keys = set()
if start == len(self._keys):
return keys
while self._keys[i].startswith(prefix):
keys.add(self._keys[i])
i += 1
self._cachestr = prefix
self._cachepoints = (start, i)
return keys
def has_keys_with_prefix(self, prefix):
if prefix in self._data:
return True
if prefix.startswith(self._cachestr):
lo, hi = self._cachepoints
i = bisect_left(self._keys, prefix, lo, hi)
else:
i = bisect_left(self._keys, prefix)
if i == len(self._keys):
return False
return self._keys[i].startswith(prefix)
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