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# Copyright (C) 2007, 2008 One Laptop Per Child
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#
# The timezone config is based on the system-config-date
# (http://fedoraproject.org/wiki/SystemConfig/date) tool.
# Parts of the code were reused.
#
import os
import logging
from gettext import gettext as _
import gconf
_zone_tab = '/usr/share/zoneinfo/zone.tab'
NTPDATE_PATH = '/etc/rc.d/init.d/ntpdate'
NTP_SERVER_CONFIG_FILENAME = '/etc/ntp/step-tickers'
_logger = logging.getLogger('ControlPanel - TimeZone')
def _initialize():
"""Initialize the docstring of the set function"""
if set_timezone.__doc__ is None:
# when running under 'python -OO', all __doc__ fields are None,
# so += would fail -- and this function would be unnecessary anyway.
return
timezones = read_all_timezones()
for timezone in timezones:
set_timezone.__doc__ += timezone + '\n'
def read_all_timezones(fn=_zone_tab):
fd = open(fn, 'r')
lines = fd.readlines()
fd.close()
timezones = []
for line in lines:
if line.startswith('#'):
continue
line = line.split()
if len(line) > 1:
timezones.append(line[2])
timezones.sort()
for offset in xrange(-12, 13):
if offset < 0:
tz = 'GMT%d' % offset
elif offset > 0:
tz = 'GMT+%d' % offset
else:
tz = 'GMT'
timezones.append(tz)
for offset in xrange(-12, 13):
if offset < 0:
tz = 'UTC%d' % offset
elif offset > 0:
tz = 'UTC+%d' % offset
else:
tz = 'UTC'
timezones.append(tz)
return timezones
def get_timezone():
client = gconf.client_get_default()
return client.get_string('/desktop/sugar/date/timezone')
def print_timezone():
print get_timezone()
def set_timezone(timezone):
"""Set the system timezone
timezone : e.g. 'America/Los_Angeles'
"""
timezones = read_all_timezones()
if timezone in timezones:
os.environ['TZ'] = timezone
client = gconf.client_get_default()
client.set_string('/desktop/sugar/date/timezone', timezone)
else:
raise ValueError(_('Error timezone does not exist.'))
return 1
def is_ntp_servers_config_feature_available():
return os.path.exists(NTPDATE_PATH)
def get_ntp_servers():
servers = []
# If the file does not exist, return.
if not os.path.exists(NTP_SERVER_CONFIG_FILENAME):
return servers
f = open(NTP_SERVER_CONFIG_FILENAME, 'r')
for server in f.readlines():
servers.append(server.rstrip('\n'))
f.close()
return servers
def set_ntp_servers(servers):
# First remove the old ssid-file, if it exists.
if os.path.exists(NTP_SERVER_CONFIG_FILENAME):
try:
os.remove(NTP_SERVER_CONFIG_FILENAME)
except:
_logger.exception('Error removing file.')
return
# Do nothing and return, if the values-list is empty
if len(servers) == 0:
return
# If we reach here, we have a non-empty ssid-values-list.
f = open(NTP_SERVER_CONFIG_FILENAME, 'w')
for server in servers:
if len(server) > 0:
f.write(server + '\n')
f.close()
# inilialize the docstrings for the timezone
_initialize()
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