Extracted args

node/src/args.rs

@@ -0,0 +1,52 @@
+use std::net::SocketAddr;
+use std::net::ToSocketAddrs;
+use std::path::PathBuf;
+
+use std::io;
+
+use structopt::StructOpt;
+
+pub const DEFAULT_PORT: u16 = 8443;
+const DEFAULT_PORT_STR: &str = "8443";
+
+#[derive(Debug, StructOpt)]
+pub enum Args {
+    /// Run the node
+    Run(Run),
+}
+
+impl Args {
+    pub fn from_args() -> Self {
+        StructOpt::from_args()
+    }
+}
+
+#[derive(Debug, StructOpt)]
+pub struct Run {
+    /// Exit once the node has caught up
+    #[structopt(short = "s", long = "short")]
+    short: bool,
+
+    /// Fork and run as a daemon
+    #[structopt(short = "d", long = "daemon")]
+    daemon: bool,
+
+    /// Port on which to run the node
+    #[structopt(short = "p", long = "port", default_value = DEFAULT_PORT_STR)]
+    port: u16,
+
+    /// Path in which to store node content
+    #[structopt(long = "path", default_value = ".unnamed/node")]
+    path: PathBuf,
+
+    /// Nodes to initially connect to
+    #[structopt(long = "initial_nodes", parse(try_from_str = parse_connection_address))]
+    initial_nodes: Vec<SocketAddr>,
+}
+
+fn parse_connection_address(arg: &str) -> io::Result<SocketAddr> {
+    let mut addrs = arg
+        .to_socket_addrs()
+        .or_else(|_| (arg, DEFAULT_PORT).to_socket_addrs())?;
+    Ok(addrs.next().expect("no socket addr"))
+}

node/src/main.rs

@@ -1,53 +1,16 @@
-use std::net::SocketAddr;
-use std::net::ToSocketAddrs;
-use std::path::PathBuf;
+mod args;
 
-use std::io;
+#[derive(Debug)]
+enum Error {}
 
-use structopt::StructOpt;
+fn main() -> Result<(), Error> {
+    let node = args::Args::from_args();
 
-pub const DEFAULT_PORT: u16 = 8443;
-const DEFAULT_PORT_STR: &str = "8443";
-
-#[derive(Debug, StructOpt)]
-enum Node {
-    /// Run the node
-    Run {
-        /// Exit once the node has caught up
-        #[structopt(short = "s", long = "short")]
-        short: bool,
-
-        /// Fork and run as a daemon
-        #[structopt(short = "d", long = "daemon")]
-        daemon: bool,
-
-        /// Port on which to run the node
-        #[structopt(short = "p", long = "port", default_value = DEFAULT_PORT_STR)]
-        port: u16,
-
-        /// Path in which to store node content
-        #[structopt(long = "path", default_value = ".unnamed/node")]
-        path: PathBuf,
-
-        /// Nodes to initially connect to
-        #[structopt(long = "initial_nodes", parse(try_from_str = parse_connection_address))]
-        initial_nodes: Vec<SocketAddr>,
-    },
+    match node {
+        args::Args::Run(args) => run(&args),
+    }
 }
 
-fn parse_connection_address(arg: &str) -> io::Result<SocketAddr> {
-    let mut addrs = arg
-        .to_socket_addrs()
-        .or_else(|_| (arg, DEFAULT_PORT).to_socket_addrs())?;
-    Ok(addrs.next().expect("no socket addr"))
-}
-
-fn main() {
-    let node = Node::from_args();
-
-    println!("{:?}", node);
-}
-
-fn run() -> Result<(), ()> {
+fn run(args: &args::Run) -> Result<(), Error> {
     Ok(())
 }