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# -*- coding: utf-8; Mode: Python; indent-tabs-mode: nil; tab-width: 4 -*-
# Copyright (C) 2011 Canonical Ltd.
# Written by Stephane Graber <stgraber@ubuntu.com>.
#
# 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
import os
import subprocess
from ubiquity import misc, osextras
# I think it's clearer to keep our 'set' method, and it doesn't cause a
# builtin-shadowing problem in practice unless you use 'from
# ubiquity.gsettings import set' (so don't do that).
__pychecker__ = 'no-shadowbuiltin'
_cached_gsettings_exists = None
def _gsettings_exists():
global _cached_gsettings_exists
if _cached_gsettings_exists is not None:
return _cached_gsettings_exists
_cached_gsettings_exists = osextras.find_on_path('gsettings')
return _cached_gsettings_exists
def get(schema, key, user=None):
if not _gsettings_exists():
return
if not user:
user = os.getenv("SUDO_USER", os.getenv("USER", "root"))
subp = subprocess.Popen(
['sudo', '-H', '-u', user, 'gsettings', 'get', schema, key],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
preexec_fn=misc.drop_all_privileges, universal_newlines=True)
value = subp.communicate()[0].rstrip('\n')
if not value:
return
# If it's a list, it should be accessed through get_list()
if value.startswith('['):
return value
# Parse strings
if value.startswith('\'') and value.endswith('\''):
return value[1:-1]
# Parse ints
if value.isdigit():
return int(value)
# Parse booleans
if value == 'false':
return False
if value == 'true':
return True
def get_list(schema, key, user=None):
if not _gsettings_exists():
return
value = get(schema, key, user)
if not value or not value.startswith("[") or not value.endswith("]"):
return
try:
# This only works reliably with int and strings
elements = eval(value, None, None)
return elements
except:
return
def set(schema, key, value, user=None):
if not _gsettings_exists():
return
if not user:
user = os.getenv("SUDO_USER", os.getenv("USER", "root"))
# Convert booleans
if isinstance(value, bool):
value = "true" if value else "false"
subprocess.call(
['sudo', '-H', '-u', user, 'gsettings', 'set', schema, key,
str(value)], preexec_fn=misc.drop_all_privileges)
def set_list(schema, key, values, user=None):
if not _gsettings_exists():
return
value = str(values)
set(schema, key, value, user)
def unset(schema, key, user=None):
if not _gsettings_exists():
return
if not user:
user = os.getenv("SUDO_USER", os.getenv("USER", "root"))
subprocess.call(
['sudo', '-H', '-u', user, 'gsettings', 'reset', schema, key],
preexec_fn=misc.drop_all_privileges)
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