parse_args: CLI commandline parsing for the frontend

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

src/parse_args.rs

@@ -1,10 +1,17 @@
+/* advotracker infrastructure.
+ *
+ * Copyright 2020 Ralf Zerres <ralf.zerres@networkx.de>
+ * SPDX-License-Identifier: (0BSD or MIT)
+ */
+
 use viperus::Viperus;
 
 /// The given Viperus structure will be muted according to the
 /// processed default, environment and commandline arguments
 pub fn parse_args(v: &mut Viperus) -> Result<(), Box<dyn std::error::Error>> {
     //use log::{debug, info, trace, warn};
-    use log::trace;
+    //use log::trace;
+    use tracing::{trace, Level};
     use std::env;
 
     if cfg!(feature = "yaml") {