+
−# -*- coding: UTF-8 -*-
+
−# Copyright (c) 2008 - 2010, Pascal Volk
+
−# See COPYING for distribution information.
+
−
+
−"""
+
−    VirtualMailManager.EmailAddress
+
−
+
−    Virtual Mail Manager's EmailAddress class to handle e-mail addresses.
+
−"""
+
−import re
+
−
+
−from VirtualMailManager.Domain import check_domainname
+
−from VirtualMailManager.constants.ERROR import \
+
−     DOMAIN_NO_NAME, INVALID_ADDRESS, LOCALPART_INVALID, LOCALPART_TOO_LONG
+
−from VirtualMailManager.errors import EmailAddressError as EAErr
+
−
+
−
+
−RE_LOCALPART = re.compile(r"[^\w!#$%&'\*\+-\.\/=?^_`{\|}~]")
+
−_ = lambda msg: msg
+
−
+
−
+
−class EmailAddress(object):
+
−    """Simple class for validated e-mail addresses."""
+
−    __slots__ = ('_localpart', '_domainname')
+
−
+
−    def __init__(self, address):
+
−        """Creates a new instance from the string/unicode ``address``."""
+
−        assert isinstance(address, basestring)
+
−        self._localpart = None
+
−        self._domainname = None
+
−        self._chk_address(address)
+
−
+
−    @property
+
−    def localpart(self):
+
−        """The local-part of the address *local-part@domain*"""
+
−        return self._localpart
+
−
+
−    @property
+
−    def domainname(self):
+
−        """The domain part of the address *local-part@domain*"""
+
−        return self._domainname
+
−
+
−    def __eq__(self, other):
+
−        if isinstance(other, self.__class__):
+
−            return self._localpart == other.localpart and \
+
−                    self._domainname == other.domainname
+
−        return NotImplemented
+
−
+
−    def __ne__(self, other):
+
−        if isinstance(other, self.__class__):
+
−            return self._localpart != other.localpart or \
+
−                    self._domainname != other.domainname
+
−        return NotImplemented
+
−
+
−    def __hash__(self):
+
−        return hash((self._localpart.lower(), self._domainname.lower()))
+
−
+
−    def __repr__(self):
+
−        return "EmailAddress('%s@%s')" % (self._localpart, self._domainname)
+
−
+
−    def __str__(self):
+
−        return '%s@%s' % (self._localpart, self._domainname)
+
−
+
−    def _chk_address(self, address):
+
−        """Checks if the string ``address`` could be used for an e-mail
+
−        address.  If so, it will assign the corresponding values to the
+
−        attributes `_localpart` and `_domainname`."""
+
−        parts = address.split('@')
+
−        p_len = len(parts)
+
−        if p_len < 2:
+
−            raise EAErr(_(u"Missing the '@' sign in address %r") % address,
+
−                        INVALID_ADDRESS)
+
−        elif p_len > 2:
+
−            raise EAErr(_(u"Too many '@' signs in address %r") % address,
+
−                        INVALID_ADDRESS)
+
−        if not parts[0]:
+
−            raise EAErr(_(u'Missing local-part in address %r') % address,
+
−                        LOCALPART_INVALID)
+
−        if not parts[1]:
+
−            raise EAErr(_(u'Missing domain name in address %r') % address,
+
−                        DOMAIN_NO_NAME)
+
−        self._localpart = check_localpart(parts[0])
+
−        self._domainname = check_domainname(parts[1])
+
−
+
−
+
−def check_localpart(localpart):
+
−    """Returns the validated local-part `localpart`.
+
−
+
−    Throws a `EmailAddressError` if the local-part is too long or contains
+
−    invalid characters.
+
−    """
+
−    if len(localpart) > 64:
+
−        raise EAErr(_(u"The local-part '%s' is too long") % localpart,
+
−                    LOCALPART_TOO_LONG)
+
−    invalid_chars = set(RE_LOCALPART.findall(localpart))
+
−    if invalid_chars:
+
−        i_chars = u''.join((u'"%s" ' % c for c in invalid_chars))
+
−        raise EAErr(_(u"The local-part '%(l_part)s' contains invalid \
+
−characters: %(i_chars)s") %
+
−                    {'l_part': localpart, 'i_chars': i_chars},
+
−                    LOCALPART_INVALID)
+
−    return localpart
+
−
+
−
+
−del _