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21 lines
637 B
Python
21 lines
637 B
Python
# From 2.5.6 osxemxpath.py
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# Bug is in getting "and" and "del" correct
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def normpath(comps):
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i = 0
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while i < len(comps):
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if comps[i] == '.':
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del comps[i]
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elif comps[i] == '..' and i > 0 and comps[i-1] not in ('', '..'):
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del comps[i-1:i+1]
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i = i - 1
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elif comps[i] == '' and i > 0 and comps[i-1] != '':
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del comps[i]
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else:
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i = i + 1
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return comps
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assert normpath(['.']) == []
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assert normpath(['a', 'b', '..']) == ['a']
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assert normpath(['a', 'b', '', 'c']) == ['a', 'b', 'c']
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assert normpath(['a', 'b', '.', '', 'c', '..']) == ['a', 'b']
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