120 lines
3.6 KiB
Python
120 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright(C) 2010 Christophe Benz
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 3 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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__all__ = ['Results', 'ResultsCondition', 'ResultsConditionException']
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class Results(object):
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def __init__(self, name=u'', header=None):
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self.name = name
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self._groups = []
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self._items = []
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self.header = header
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def add_item(self, item):
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self._items.append(item)
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def add_items(self, items):
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self._items.extend(items)
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def iter_items(self):
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return iter(self._items)
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def deep_iter_items(self):
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for i in self._items:
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yield i
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for g in self._groups:
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for i in g.iter_items():
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yield i
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def add_group(self, group):
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self._groups.append(group)
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def get_group(self, name):
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l = [group for group in self._groups if group.name == name]
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if l:
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return l[0]
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else:
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return None
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def get_or_create_group(self, name, group_class=None):
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if group_class is None:
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group_class = Results
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group = self.get_group(name)
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if group:
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return group
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else:
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new_group = group_class(name)
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self.add_group(new_group)
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return new_group
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def iter_groups(self):
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return iter(self._groups)
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class ResultsCondition(object):
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condition_str = None
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def __init__(self, condition_str):
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condition_str = condition_str.replace('OR', 'or') \
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.replace('AND', 'and') \
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.replace('NOT', 'not')
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or_list = []
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for _or in condition_str.split('or'):
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and_dict = {}
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for _and in _or.split('and'):
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if '!=' in _and:
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k, v = _and.split('!=')
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k += '!'
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elif '=' in _and:
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k, v = _and.split('=')
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else:
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raise ResultsConditionException(u'Could not find = or != operator in sub-expression "%s"' % _and)
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and_dict[k.strip()] = v.strip()
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or_list.append(and_dict)
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self.condition = or_list
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self.condition_str = condition_str
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def is_valid(self, d):
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for _or in self.condition:
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for k, v in _or.iteritems():
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if k.endswith('!'):
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k = k[:-1]
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different = True
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else:
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different = False
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if k in d:
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if different:
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if d[k] == v:
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return False
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else:
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if d[k] != v:
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return False
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else:
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raise ResultsConditionException(u'Field "%s" is not valid.' % k)
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return True
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def __str__(self):
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return unicode(self).encode('utf-8')
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def __unicode__(self):
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return self.condition_str
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class ResultsConditionException(Exception):
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pass
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