"""make some plone utilities available to raw CMF sites
"""

import transaction

try:
    # Plone 2.1
    from Products.CMFPlone.utils import IndexIterator
except ImportError:
    try:
        # Plone 2.0
        from Products.CMFPlone.PloneUtilities import IndexIterator
    except ImportError:
        class IndexIterator:
            __allow_access_to_unprotected_subobjects__ = 1

            def __init__(self, upper=100000, pos=0):
                self.upper=upper
                self.pos=pos

            def next(self):
                if self.pos <= self.upper:
                    self.pos += 1
                    return self.pos
                raise KeyError, 'Reached upper bounds'

try:
    # Plone 2.1
    from Products.CMFPlone.utils import transaction_note
except ImportError:
    try:
        # Plone 2.0
        from Products.CMFPlone import transaction_note
    except ImportError:
        def transaction_note(note):
            """ Write human legible note """
            T=transaction.get()
            if (len(T.description)+len(note))>=65535:
                log('Transaction note too large omitting %s' % str(note))
            else:
                T.note(str(note))