add netcdf file name arg

src/main/python/gov/usgs/earthquake/nshmp/netcdf/application_inputs.py

@@ -23,6 +23,7 @@ class ApplicationInputs:
         self.clean_ascii = False
         self.db_dir = Path(_DEFAULT_DB_DIR)
         self.download_only = False
+        self.netcdf_filename = None
         self.__setattr__(Nshm.NSHM_2008.name, False)
         self.__setattr__(Nshm.NSHM_2014.name, False)
         self.__setattr__(Nshm.NSHM_2014A.name, False)
@@ -60,16 +61,19 @@ class ApplicationInputs:
 
         for key, value in args.items():
             if hasattr(inputs, key):
-                if key == "db_dir":
-                    setattr(inputs, key, ApplicationInputs._check_db_dir(db_dir=value))
+                if key == "db_dir" or key == "netcdf_filename":
+                    setattr(inputs, key, ApplicationInputs._check_dir(dir=value))
                 else:
                     setattr(inputs, key, value)
 
         return inputs
 
     @staticmethod
-    def _check_db_dir(db_dir: str) -> Path:
-        if db_dir.startswith("~"):
-            db_dir = db_dir.replace("~", str(Path.home()))
+    def _check_dir(dir: str) -> Path:
+        if dir is None:
+            return None
 
-        return Path(os.path.abspath(db_dir))
+        if dir.startswith("~"):
+            dir = dir.replace("~", str(Path.home()))
+
+        return Path(os.path.abspath(dir))