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# -*- coding: utf-8 -*-
import sys
USE_GI = True
DBusException = Exception
if sys.platform not in ("darwin", "win32"):
if USE_GI:
try:
from gi.repository import Gio, GLib
except ImportError:
USE_GI = False
if not USE_GI:
import dbus
from dbus.mainloop import glib
from DisplayCAL.util_xml import XMLDict
if USE_GI:
dbus_session = Gio.bus_get_sync(Gio.BusType.SESSION, None)
dbus_system = Gio.bus_get_sync(Gio.BusType.SYSTEM, None)
DBusException = GLib.Error
else:
glib.threads_init()
dbus_session = dbus.SessionBus()
dbus_system = dbus.SystemBus()
DBusException = dbus.exceptions.DBusException
from DisplayCAL.util_str import safe_str
BUSTYPE_SESSION = 1
BUSTYPE_SYSTEM = 2
class DBusObjectInterfaceMethod:
def __init__(self, iface, method_name):
self._iface = iface
self._method_name = method_name
def __call__(self, *args, **kwargs):
if USE_GI:
format_string = ""
value = []
for arg in args:
if isinstance(arg, str):
format_string += "s"
elif isinstance(arg, int):
if arg < 0:
format_string += "i"
else:
format_string += "u"
elif isinstance(arg, float):
format_string += "f"
else:
raise TypeError(f"Unsupported argument type: {type(arg)}")
value.append(arg)
args = [f"({format_string})"]
args.extend(value)
if "timeout" not in kwargs:
kwargs["timeout"] = 500
return getattr(self._iface, self._method_name)(*args, **kwargs)
class DBusObject:
def __init__(self, bus_type, bus_name, object_path=None, iface_name=None):
self._bus_type = bus_type
self._bus_name = bus_name
if object_path is None:
object_path = "/" + bus_name.replace(".", "/")
self._object_path = object_path
self._iface_name = iface_name
self._proxy = None
self._iface = None
if object_path:
if bus_type == BUSTYPE_SESSION:
bus = dbus_session
else:
bus = dbus_system
self._bus = bus
interface = self._bus_name
if self._iface_name:
interface += "." + self._iface_name
try:
if USE_GI:
self._proxy = Gio.DBusProxy.new_sync(
bus,
Gio.DBusProxyFlags.NONE,
None,
bus_name,
object_path,
interface,
None,
)
self._iface = self._proxy
else:
self._proxy = bus.get_object(bus_name, object_path)
self._iface = dbus.Interface(self._proxy, dbus_interface=interface)
except (TypeError, ValueError, DBusException) as exception:
raise DBusObjectError(exception, self._bus_name)
self._introspectable = None
def __getattr__(self, name):
name = "".join(part.capitalize() for part in name.split("_"))
try:
return DBusObjectInterfaceMethod(self._iface, name)
except (AttributeError, TypeError, ValueError, DBusException) as exception:
raise DBusObjectError(exception, self._bus_name)
@property
def properties(self):
if not self._proxy:
return {}
interface = self._bus_name
if self._iface_name:
interface += "." + self._iface_name
try:
if USE_GI:
iface = Gio.DBusProxy.new_sync(
self._bus,
Gio.DBusProxyFlags.NONE,
None,
self._bus_name,
self._object_path,
"org.freedesktop.DBus.Properties",
None,
)
else:
iface = dbus.Interface(self._proxy, "org.freedesktop.DBus.Properties")
return DBusObjectInterfaceMethod(iface, "GetAll")(interface)
except (TypeError, ValueError, DBusException) as exception:
raise DBusObjectError(exception, self._bus_name)
def introspect(self):
if not self._introspectable:
self._introspectable = DBusObject(
self._bus_type,
"org.freedesktop.DBus",
"/" + self._bus_name.replace(".", "/"),
"Introspectable",
)
xml = self._introspectable.Introspect()
return XMLDict(xml)
class DBusObjectError(DBusException):
def __init__(self, exception, bus_name=None):
self._dbus_error_name = getattr(exception, "get_dbus_name", lambda: None)()
if self._dbus_error_name == "org.freedesktop.DBus.Error.ServiceUnknown":
exception = "%s: %s" % (exception, bus_name)
DBusException.__init__(self, safe_str(exception))
def get_dbus_name(self):
return self._dbus_error_name
|
