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56 lines
1.2 KiB
Python
56 lines
1.2 KiB
Python
# module 'fnmatch' -- filename matching with shell patterns
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# This version translates the pattern to a regular expression
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# and moreover caches the expressions.
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import os
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import regex
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cache = {}
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def fnmatch(name, pat):
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name = os.path.normcase(name)
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pat = os.path.normcase(pat)
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if not cache.has_key(pat):
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res = translate(pat)
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save_syntax = regex.set_syntax(0)
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cache[pat] = regex.compile(res)
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save_syntax = regex.set_syntax(save_syntax)
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return cache[pat].match(name) == len(name)
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def translate(pat):
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i, n = 0, len(pat)
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res = ''
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while i < n:
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c = pat[i]
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i = i+1
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if c == '*':
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res = res + '.*'
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elif c == '?':
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res = res + '.'
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elif c == '[':
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j = i
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if j < n and pat[j] == '!':
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j = j+1
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if j < n and pat[j] == ']':
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j = j+1
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while j < n and pat[j] != ']':
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j = j+1
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if j >= n:
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res = res + '\\['
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else:
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stuff = pat[i:j]
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i = j+1
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if stuff[0] == '!':
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stuff = '[^' + stuff[1:] + ']'
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elif stuff == '^'*len(stuff):
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stuff = '\\^'
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else:
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while stuff[0] == '^':
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stuff = stuff[1:] + stuff[0]
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stuff = '[' + stuff + ']'
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res = res + stuff
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elif c in '\\.+^$':
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res = res + ('\\' + c)
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else:
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res = res + c
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return res
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