Revision 15688021 pithos/lib/hashfiler/noder.py

b/pithos/lib/hashfiler/noder.py
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        ## all strings start with the null string,
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        ## therefore we have to approximate strnextling('')
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        ## with the last unicode character supported by python
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        return unichr(0x10ffff)
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        ## 0x10ffff for wide (32-bit unicode) python builds
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        ## 0x00ffff for narrow (16-bit unicode) python builds
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        ## We will not autodetect. 0xffff is safe enough.
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        return unichr(0xffff)
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    s = prefix[:-1]
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    c = ord(prefix[-1])
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    if c >= 0x10ffff:
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    if c >= 0xffff:
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        raise RuntimeError
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    s += unichr(c+1)
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    return s
......
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def strprevling(prefix):
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    """return an approximation of the last unicode string
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       less than but not starting with given prefix.
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       strprevling('hello') -> 'helln\\x10ffff'
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       strprevling(u'hello') -> u'helln\\xffff'
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    """
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    if not prefix:
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        ## There is no prevling for the null string
......
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    s = prefix[:-1]
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    c = ord(prefix[-1])
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    if c > 0:
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        s += unichr(c-1) + unichr(0x10ffff)
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        s += unichr(c-1) + unichr(0xffff)
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    return s
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import re


  		












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