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from xml.etree import ElementTree
import model

class DataXML(model.Data):
    """Reads network information from a XML file"""
    
    def parse_config(self):
        """Reads and sets up XML config file fields"""
        
        self.data_file = self.config['Storage']['xml_file']
        
    def load_data(self):
        """Parse XML for getting network information"""

        root = ElementTree(file=self.data_file).getroot()
        
        for elem in root:
            if elem.tag == 'person':
                self.add_person(elem)
            elif elem.tag == 'domain':
                self.add_domain(elem)
            elif elem.tag == 'network':
                self.add_network(elem)
            else:
                pass # raise TagNotFoundError
                

    def add_person(self, elem):
        """Adds a new person"""

        person = model.Person()
        for e in elem:
            if e.tag == 'name':
                person.name = e.text
            elif e.tag == 'surname':
                person.surname = e.text
            elif e.tag == 'email':
                person.email = e.text
            else:
                person.data[e.tag] = e.text

        self.persons[elem.attrib['id']] = person

    def add_domain(self, elem):
        """Adds a new domain"""

        domain = model.Domain()
        for e in elem:
            if e.tag == 'name':
                domain.name == e.text
            else:
                domain.data[e.tag] = e.text

        self.domains[elem.attrib['id']] = domain                

    def add_network(self, elem):
        """Adds a new network"""
        
        network = model.Network()
        for e in elem:
            if e.tag == 'name':
                network.name = e.text
            elif e.tag == 'domain':
                network.domains.append(e.text)            
            elif e.tag == 'ip_block':
                network.ip_blocks.append(e.text)
            elif e.tag == 'admin':
                network.admins.append(e.text)
            else:
                network.data[e.tag] = e.text
                
        self.networks[elem.attrib['id']] = network
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