Added manual specification of interfaces

src/argparse.rs

@@ -0,0 +1,26 @@
+use std::env;
+use clap::Parser;
+
+fn current_dir_as_string() -> String {
+    env::current_dir()
+        .unwrap()
+        .into_os_string()
+        .into_string()
+        .unwrap()
+}
+
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+pub struct Args {
+    /// Interface to print URLs for. Default is all interfaces.
+    #[arg(short, long, default_value_t = String::from("all"))]
+    pub interface: String,
+
+    /// Directory to serve. Default is your current working directory.
+    #[arg(short, long, default_value_t = current_dir_as_string())]
+    pub directory: String,
+}
+
+pub fn parse_args() -> Args {
+    Args::parse()
+}