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  • Committer: Martin Pool
  • Date: 2006-02-17 20:34:30 UTC
  • mto: This revision was merged to the branch mainline in revision 1569.
  • Revision ID: mbp@sourcefrog.net-20060217203430-d15f555c71a6c0cd
New utility routine rand_chars

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bzrlib/osutils.py
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    """Return size of given open file."""
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    return os.fstat(f.fileno())[ST_SIZE]
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# Define rand_bytes based on platform.
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try:
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    # Python 2.4 and later have os.urandom,
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                n -= 1
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            return s
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ALNUM = '0123456789abcdefghijklmnopqrstuvwxyz'
 
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def rand_chars(num):
 
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    """Return a random string of num alphanumeric characters
 
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    The result only contains lowercase chars because it may be used on 
 
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    case-insensitive filesystems.
 
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    """
 
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    s = ''
 
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    for raw_byte in rand_bytes(num):
 
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        s += ALNUM[ord(raw_byte) % 36]
 
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    return s
 
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## TODO: We could later have path objects that remember their list
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## decomposition (might be too tricksy though.)
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