33 lines
917 B
Python
33 lines
917 B
Python
|
#!/bin/env python
|
||
|
|
# -*- coding: utf-8 -*-
|
||
|
|
'''
|
||
|
|
feedgenerator.util
|
||
|
|
~~~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
This file contains helper functions for the feed generator module.
|
||
|
|
|
||
|
|
:copyright: 2013, Lars Kiesow <lkiesow@uos.de>
|
||
|
|
|
||
|
|
:license: FreeBSD and LGPL, see LICENSE for more details.
|
||
|
|
'''
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
def ensure_format(val, allowed, required, allowed_values={}):
|
||
|
|
if not val:
|
||
|
|
return None
|
||
|
|
# Make shure that we have a list of dicts. Even if there is only one.
|
||
|
|
if not isinstance(val, list):
|
||
|
|
val = [val]
|
||
|
|
for elem in val:
|
||
|
|
if not isinstance(elem, dict):
|
||
|
|
raise ValueError('Invalid data (value is no dictionary)')
|
||
|
|
if not set(elem.keys()) <= allowed:
|
||
|
|
raise ValueError('Data contains invalid keys')
|
||
|
|
if not set(elem.keys()) >= required:
|
||
|
|
raise ValueError('Data contains not all required keys')
|
||
|
|
for k,v in allowed_values.iteritems():
|
||
|
|
if elem.get(k) and not elem[k] in v:
|
||
|
|
raise ValueError('Invalid value for %s' % k )
|
||
|
|
return val
|