annotate env/lib/python3.9/site-packages/bleach/_vendor/html5lib/_trie/py.py @ 0:4f3585e2f14b draft default tip

"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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1 from __future__ import absolute_import, division, unicode_literals
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2 from six import text_type
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3
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4 from bisect import bisect_left
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5
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6 from ._base import Trie as ABCTrie
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7
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8
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9 class Trie(ABCTrie):
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10 def __init__(self, data):
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11 if not all(isinstance(x, text_type) for x in data.keys()):
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12 raise TypeError("All keys must be strings")
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13
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14 self._data = data
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15 self._keys = sorted(data.keys())
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16 self._cachestr = ""
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17 self._cachepoints = (0, len(data))
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18
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19 def __contains__(self, key):
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20 return key in self._data
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21
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22 def __len__(self):
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23 return len(self._data)
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24
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25 def __iter__(self):
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26 return iter(self._data)
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27
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28 def __getitem__(self, key):
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29 return self._data[key]
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30
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31 def keys(self, prefix=None):
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32 if prefix is None or prefix == "" or not self._keys:
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33 return set(self._keys)
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34
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35 if prefix.startswith(self._cachestr):
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36 lo, hi = self._cachepoints
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37 start = i = bisect_left(self._keys, prefix, lo, hi)
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38 else:
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39 start = i = bisect_left(self._keys, prefix)
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40
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41 keys = set()
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42 if start == len(self._keys):
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43 return keys
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44
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45 while self._keys[i].startswith(prefix):
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46 keys.add(self._keys[i])
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47 i += 1
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48
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49 self._cachestr = prefix
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50 self._cachepoints = (start, i)
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51
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52 return keys
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53
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54 def has_keys_with_prefix(self, prefix):
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55 if prefix in self._data:
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56 return True
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57
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58 if prefix.startswith(self._cachestr):
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59 lo, hi = self._cachepoints
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60 i = bisect_left(self._keys, prefix, lo, hi)
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61 else:
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62 i = bisect_left(self._keys, prefix)
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63
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64 if i == len(self._keys):
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65 return False
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66
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67 return self._keys[i].startswith(prefix)