infra to synthesize program options with config options

Signed-off-by: Jason Volk <jason@zemos.net>

src/main/clap.rs

@@ -3,6 +3,7 @@
 use std::path::PathBuf;
 
 use clap::Parser;
+use conduit::{Config, Result};
 
 /// Commandline arguments
 #[derive(Parser, Debug)]
@@ -15,4 +16,13 @@ pub(crate) struct Args {
 
 /// Parse commandline arguments into structured data
 #[must_use]
-pub(crate) fn parse() -> Args { Args::parse() }
+pub(super) fn parse() -> Args { Args::parse() }
+
+/// Synthesize any command line options with configuration file options.
+pub(crate) fn update(config: &mut Config, args: &Args) -> Result<()> {
+	// Indicate the admin console should be spawned automatically if the
+	// configuration file hasn't already.
+	config.admin_console_automatic |= args.console.unwrap_or(false);
+
+	Ok(())
+}