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Viewing changes to bzrlib/osutils.py

  • Committer: Vincent Ladeuil
  • Date: 2010-10-15 15:05:09 UTC
  • mfrom: (5409.1.25 orphan-config-option)
  • mto: This revision was merged to the branch mainline in revision 5504.
  • Revision ID: v.ladeuil+lp@free.fr-20101015150509-cigmjyo1florh3d7
Merge lp:~vila/bzr/323111-orphan-config-option

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bzrlib/osutils.py
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        raise errors.BzrError("Can't decode username as %s." % \
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                user_encoding)
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    return username
 
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def available_backup_name(base, exists):
 
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    """Find a non-existing backup file name.
 
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    This will *not* create anything, this only return a 'free' entry.  This
 
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    should be used for checking names in a directory below a locked
 
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    tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
 
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    Leap) and generally discouraged.
 
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    :param base: The base name.
 
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    :param exists: A callable returning True if the path parameter exists.
 
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    """
 
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    counter = 1
 
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    name = "%s.~%d~" % (base, counter)
 
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    while exists(name):
 
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        counter += 1
 
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        name = "%s.~%d~" % (base, counter)
 
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    return name