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##############################################################################
#
# Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE
#
##############################################################################
__version__='$Revision: 1.5 $'[11:-2]
limited_builtins = {}
def limited_range(iFirst, *args):
# limited range function from Martijn Pieters
RANGELIMIT = 1000
if not len(args):
iStart, iEnd, iStep = 0, iFirst, 1
elif len(args) == 1:
iStart, iEnd, iStep = iFirst, args[0], 1
elif len(args) == 2:
iStart, iEnd, iStep = iFirst, args[0], args[1]
else:
raise AttributeError('range() requires 1-3 int arguments')
if iStep == 0: raise ValueError('zero step for range()')
iLen = int((iEnd - iStart) / iStep)
if iLen < 0: iLen = 0
if iLen >= RANGELIMIT: raise ValueError('range() too large')
return list(range(iStart, iEnd, iStep))
limited_builtins['range'] = limited_range
def limited_list(seq):
if isinstance(seq, str):
raise TypeError('cannot convert string to list')
return list(seq)
limited_builtins['list'] = limited_list
def limited_tuple(seq):
if isinstance(seq, str):
raise TypeError('cannot convert string to tuple')
return tuple(seq)
limited_builtins['tuple'] = limited_tuple
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