--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libervia/cli/loops.py	Fri Jun 02 14:54:26 2023 +0200
@@ -0,0 +1,145 @@
+#!/usr/bin/env python3
+
+# Libervia CLI
+# Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import sys
+import asyncio
+import logging as log
+from libervia.backend.core.i18n import _
+from libervia.cli.constants import Const as C
+
+log.basicConfig(level=log.WARNING,
+                format='[%(name)s] %(message)s')
+
+USER_INTER_MSG = _("User interruption: good bye")
+
+
+class QuitException(BaseException):
+    """Quitting is requested
+
+    This is used to stop execution when host.quit() is called
+    """
+
+
+def get_libervia_cli_loop(bridge_name):
+    if 'dbus' in bridge_name:
+        import signal
+        import threading
+        from gi.repository import GLib
+
+        class LiberviaCLILoop:
+
+            def run(self, libervia_cli, args, namespace):
+                signal.signal(signal.SIGINT, self._on_sigint)
+                self._glib_loop = GLib.MainLoop()
+                threading.Thread(target=self._glib_loop.run).start()
+                loop = asyncio.get_event_loop()
+                loop.run_until_complete(libervia_cli.main(args=args, namespace=namespace))
+                loop.run_forever()
+
+            def quit(self, exit_code):
+                loop = asyncio.get_event_loop()
+                loop.stop()
+                self._glib_loop.quit()
+                sys.exit(exit_code)
+
+            def call_later(self, delay, callback, *args):
+                """call a callback repeatedly
+
+                @param delay(int): delay between calls in s
+                @param callback(callable): method to call
+                    if the callback return True, the call will continue
+                    else the calls will stop
+                @param *args: args of the callbac
+                """
+                loop = asyncio.get_event_loop()
+                loop.call_later(delay, callback, *args)
+
+            def _on_sigint(self, sig_number, stack_frame):
+                """Called on keyboard interruption
+
+                Print user interruption message, set exit code and stop reactor
+                """
+                print("\r" + USER_INTER_MSG)
+                self.quit(C.EXIT_USER_CANCELLED)
+    else:
+        import signal
+        from twisted.internet import asyncioreactor
+        asyncioreactor.install()
+        from twisted.internet import reactor, defer
+
+        class LiberviaCLILoop:
+
+            def __init__(self):
+                # exit code must be set when using quit, so if it's not set
+                # something got wrong and we must report it
+                self._exit_code = C.EXIT_INTERNAL_ERROR
+
+            def run(self, libervia_cli, *args):
+                self.libervia_cli = libervia_cli
+                signal.signal(signal.SIGINT, self._on_sigint)
+                defer.ensureDeferred(self._start(libervia_cli, *args))
+                try:
+                    reactor.run(installSignalHandlers=False)
+                except SystemExit as e:
+                    self._exit_code = e.code
+                sys.exit(self._exit_code)
+
+            async def _start(self, libervia_cli, *args):
+                fut = asyncio.ensure_future(libervia_cli.main(*args))
+                try:
+                    await defer.Deferred.fromFuture(fut)
+                except BaseException:
+                    import traceback
+                    traceback.print_exc()
+                    libervia_cli.quit(1)
+
+            def quit(self, exit_code):
+                self._exit_code = exit_code
+                reactor.stop()
+
+            def _timeout_cb(self, args, callback, delay):
+                try:
+                    ret = callback(*args)
+                # FIXME: temporary hack to avoid traceback when using XMLUI
+                #        to be removed once create_task is not used anymore in
+                #        xmlui_manager (i.e. once libervia.frontends.tools.xmlui fully supports
+                #        async syntax)
+                except QuitException:
+                    return
+                if ret:
+                    reactor.callLater(delay, self._timeout_cb, args, callback, delay)
+
+            def call_later(self, delay, callback, *args):
+                reactor.callLater(delay, self._timeout_cb, args, callback, delay)
+
+            def _on_sigint(self, sig_number, stack_frame):
+                """Called on keyboard interruption
+
+                Print user interruption message, set exit code and stop reactor
+                """
+                print("\r" + USER_INTER_MSG)
+                self._exit_code = C.EXIT_USER_CANCELLED
+                reactor.callFromThread(reactor.stop)
+
+
+    if bridge_name == "embedded":
+        raise NotImplementedError
+        # from sat.core import sat_main
+        # sat = sat_main.SAT()
+
+    return LiberviaCLILoop