App skeleton, setuptools and versioning

nomadnet/NomadNetworkApp.py

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+import os
+import RNS
+import atexit
+
+from .vendor.configobj import ConfigObj
+
+class NomadNetworkApp:
+    _shared_instance = None
+
+    configdir = os.path.expanduser("~")+"/.nomadnetwork"
+
+    def exit_handler():
+        RNS.log("Nomad Network Client exit handler executing...")
+
+    def __init__(self, configdir = None, rnsconfigdir = None):
+        if configdir == None:
+            self.configdir = NomadNetworkApp.configdir
+        else:
+            self.configdir = configdir
+
+        self.rns = RNS.Reticulum(configdir = rnsconfigdir)
+
+        if NomadNetworkApp._shared_instance == None:
+            NomadNetworkApp._shared_instance = self
+
+        atexit.register(self.exit_handler)
+
+
+    @staticmethod
+    def get_shared_instance():
+        if NomadNetworkApp._shared_instance != None:
+            return NomadNetworkApp._shared_instance
+        else:
+            raise UnboundLocalError("No Nomad Network applications have been instantiated yet")
+
+
+    def quit(self):
+        RNS.log("Nomad Network Client shutting down...")
+        os._exit(0)