Comments (2)
Yes, it would be a great feature.
But it isn't really easy to implement. Need to permute the case of all letters of constant strings in the regex, because all of "abc", "aBc", "abC", "ABc", "AbC", "aBC", "ABC" matched by "abc" case-insensitively
[aA][bB][cC]
produces the same result set and works with the current version
from exrex.
How about following algorithm?
- translate regular expression to lower case:
[Aab]{1,2} -> [aab]{1,2}
-
remove redundancies (not sure how they treated in exrex):
[aab]{1,2} -> [ab]{1,2}
-
generate strings using exrex
-
for each generated string s generate all strings s_i with permuted cases, such as that s_i.lower() == s:
def gen_case_strings(s):
if s:
head, tail = s[:-1], s[-1]
for head_cased in gen_case_strings(head):
yield head_cased + tail.lower()
yield head_cased + tail.upper()
else:
yield s
So that:
>>> list(gen_case_strings("abc"))
['abc', 'abC', 'aBc', 'aBC', 'Abc', 'AbC', 'ABc', 'ABC']
from exrex.
Related Issues (20)
- backreference issue
- Randomize All
- Multiple random results
- test `limit=` in `count()`
- Matching/generating incorrect strings
- Question about some sequences HOT 1
- Count is very inaccurate HOT 3
- I get empty lines instead of output HOT 1
- Lookahead support
- add is_infinite property/method
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- [Feature Request] exrex in Golang HOT 1
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from exrex.