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# Copyright (C) 2009 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from email import Utils
class UserMapper(object):
def __init__(self, lines):
"""Create a user-mapper from a list of lines.
Blank lines and comment lines (starting with #) are ignored.
Otherwise lines are of the form:
old-id = new-id
Each id may be in the following forms:
name <email>
name
If old-id has the value '@', then new-id is the domain to use
when generating an email from a user-id.
"""
self._parse(lines)
def _parse(self, lines):
self._user_map = {}
self._default_domain = None
for line in lines:
line = line.strip()
if len(line) == 0 or line.startswith('#'):
continue
old, new = line.split('=', 1)
old = old.strip()
new = new.strip()
if old == '@':
self._default_domain = new
continue
# Parse each id into a name and email address
old_name, old_email = self._parse_id(old)
new_name, new_email = self._parse_id(new)
#print "found user map: %s => %s" % ((old_name, old_email), (new_name, new_email))
self._user_map[(old_name, old_email)] = (new_name, new_email)
def _parse_id(self, id):
if id.find('<') == -1:
return id, ""
else:
return Utils.parseaddr(id)
def map_name_and_email(self, name, email):
"""Map a name and an email to the preferred name and email.
:param name: the current name
:param email: the current email
:result: the preferred name and email
"""
try:
new_name, new_email = self._user_map[(name, email)]
except KeyError:
new_name = name
if self._default_domain and not email:
new_email = "%s@%s" % (name, self._default_domain)
else:
new_email = email
return new_name, new_email
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