def _parsePageToken(pageToken, numValues):
"""
Parses the specified pageToken and returns a list of the specified
number of values. Page tokens are assumed to consist of a fixed
number of integers seperated by colons. If the page token does
not conform to this specification, raise a InvalidPageToken
exception.
"""
tokens = pageToken.split(":")
if len(tokens) != numValues:
msg = "Invalid number of values in page token"
raise exceptions.BadPageTokenException(msg)
try:
values = map(int, tokens)
except ValueError:
msg = "Malformed integers in page token"
raise exceptions.BadPageTokenException(msg)
return values
def _raiseBadPageTokenException(self):
raise exceptions.BadPageTokenException(
self._badPageTokenExceptionMessage)