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https://github.com/morpheus65535/bazarr
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99 lines
2.1 KiB
Python
99 lines
2.1 KiB
Python
import re
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from ._functools import method_cache
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# from jaraco.text 3.5
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class FoldedCase(str):
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"""
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A case insensitive string class; behaves just like str
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except compares equal when the only variation is case.
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>>> s = FoldedCase('hello world')
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>>> s == 'Hello World'
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True
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>>> 'Hello World' == s
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True
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>>> s != 'Hello World'
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False
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>>> s.index('O')
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4
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>>> s.split('O')
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['hell', ' w', 'rld']
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>>> sorted(map(FoldedCase, ['GAMMA', 'alpha', 'Beta']))
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['alpha', 'Beta', 'GAMMA']
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Sequence membership is straightforward.
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>>> "Hello World" in [s]
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True
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>>> s in ["Hello World"]
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True
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You may test for set inclusion, but candidate and elements
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must both be folded.
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>>> FoldedCase("Hello World") in {s}
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True
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>>> s in {FoldedCase("Hello World")}
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True
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String inclusion works as long as the FoldedCase object
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is on the right.
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>>> "hello" in FoldedCase("Hello World")
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True
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But not if the FoldedCase object is on the left:
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>>> FoldedCase('hello') in 'Hello World'
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False
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In that case, use in_:
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>>> FoldedCase('hello').in_('Hello World')
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True
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>>> FoldedCase('hello') > FoldedCase('Hello')
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False
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"""
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def __lt__(self, other):
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return self.lower() < other.lower()
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def __gt__(self, other):
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return self.lower() > other.lower()
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def __eq__(self, other):
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return self.lower() == other.lower()
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def __ne__(self, other):
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return self.lower() != other.lower()
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def __hash__(self):
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return hash(self.lower())
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def __contains__(self, other):
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return super().lower().__contains__(other.lower())
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def in_(self, other):
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"Does self appear in other?"
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return self in FoldedCase(other)
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# cache lower since it's likely to be called frequently.
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@method_cache
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def lower(self):
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return super().lower()
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def index(self, sub):
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return self.lower().index(sub.lower())
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def split(self, splitter=' ', maxsplit=0):
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pattern = re.compile(re.escape(splitter), re.I)
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return pattern.split(self, maxsplit)
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