| # -*- coding:utf-8 -*- |
| |
| |
| class UnknownHerdsError(ValueError): |
| def __init__(self, herd_names): |
| _plural = len(herd_names) != 1 |
| super(UnknownHerdsError, self).__init__( |
| 'Unknown %s %s' % ( |
| _plural and 'herds' or 'herd', |
| ','.join('"%s"' % e for e in herd_names))) |
| |
| |
| def check_metadata_herds(xml_tree, herd_base): |
| herd_nodes = xml_tree.findall('herd') |
| unknown_herds = [ |
| name for name in ( |
| e.text.strip() for e in herd_nodes if e.text is not None) |
| if not herd_base.known_herd(name)] |
| |
| if unknown_herds: |
| raise UnknownHerdsError(unknown_herds) |
| |
| |
| def check_metadata(xml_tree, herd_base): |
| if herd_base is not None: |
| check_metadata_herds(xml_tree, herd_base) |
