jw.pkg.cmds.distro.backend.BackendCmd -> Backend

Rename jw.pkg.cmds.distro.backend.BackendCmd to Backend, because it's
not necessarily a command, i.e. doesn't necessarily have a run()
method. It's more of a distribution abstraction of the steps needed
for for a specific command, the run() method itself is implemented in
jw.pkg.cmds.distro.CmdXxx.

This commit is the beginning of a bigger move to change the
distribution backend class hierarchy. At the end of this change set,
the backend command should not derive the backend classes from a base
specific to the respective distribution, but from an abstract base
class specific to the command run. The distribution specifics are
then going to be encapsulated in another class called "Util", an
instance of which is going to be provided to the backend as .util
member.

Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/cmds/distro/backend/Backend.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+
+from ....lib.util import run_cmd, run_sudo
+from ..Cmd import Cmd
+
+class Backend:
+
+    def __init__(self, parent: Cmd):
+        self.__parent = parent
+
+    async def _sudo(self, cmd: list[str], mod_env: dict[str, str] = {}, opts: list[str]=[]):
+        return await run_sudo(cmd, mod_env=mod_env, opts=opts, interactive=self.interactive)
+
+    @property
+    def parent(self):
+        return self.__parent
+
+    @property
+    def interactive(self) -> bool:
+        return self.__parent.interactive

src/python/jw/pkg/cmds/distro/backend/arch/Base.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
 
 from ...Cmd import Cmd
-from ..BackendCmd import BackendCmd
+from ..Backend import Backend
 
-class Base(BackendCmd):
+class Base(Backend):
 
     def __init__(self, parent: Cmd):
         super().__init__(parent)

src/python/jw/pkg/cmds/distro/backend/debian/Base.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
 
 from ...Cmd import Cmd
-from ..BackendCmd import BackendCmd
+from ..Backend import Backend
 
-class Base(BackendCmd):
+class Base(Backend):
 
     def __init__(self, parent: Cmd):
         super().__init__(parent)

src/python/jw/pkg/cmds/distro/backend/redhat/Base.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
 
 from ...Cmd import Cmd
-from ..BackendCmd import BackendCmd
+from ..Backend import Backend
 
-class Base(BackendCmd):
+class Base(Backend):
 
     def __init__(self, parent: Cmd):
         super().__init__(parent)

src/python/jw/pkg/cmds/distro/backend/suse/Base.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
 
 from ...Cmd import Cmd
-from ..BackendCmd import BackendCmd
+from ..Backend import Backend
 
-class Base(BackendCmd):
+class Base(Backend):
 
     def __init__(self, parent: Cmd):
         super().__init__(parent)