add lib, partition both application files, c-line input

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "rust-irc"
+version = "0.1.0"

src/client.rs

@@ -0,0 +1,4 @@
+pub fn start() {
+    println!("Starting the IRC client");
+    todo!();
+}

src/lib.rs

@@ -0,0 +1,19 @@
+pub mod codes {
+    pub mod client {
+        pub const JOIN_ROOM: u8 = 0x01;
+        pub const JOIN_SERVER: u8 = 0x02;
+        pub const LEAVE_ROOM: u8 = 0x03;
+        pub const LIST_ROOMS: u8 = 0x04;
+        pub const SEND_MESSAGE: u8 = 0x05;
+    }
+    pub const KEEP_ALIVE: u8 = 0x0C;
+    pub const RESPONSE: u8 = 0x0D;
+    pub const RESPONSE_OK: u8 = 0x0E;
+    pub const ERROR: u8 = 0x0F;
+    pub const QUIT: u8 = 0x0B;
+    pub mod error {
+        pub const INVALID_ROOM: u8 = 0x10;
+        pub const NICKNAME_COLLISION: u8 = 0x11;
+        pub const SERVER_FULL: u8 = 0x12;
+    }
+}

src/main.rs

@@ -1,3 +1,29 @@
-fn main() {
-    println!("Hello, world!");
+use std::env;
+
+mod client;
+mod server;
+
+fn parsechar(s: &str) -> char {
+    s.parse().unwrap_or_else(|_| info())
+}
+
+fn info() -> ! {
+    println!("Start client: cargro run c\nStart server: cargo run s");
+    std::process::exit(1)
+}
+
+fn main() {
+    let args: Vec<String> = env::args().skip(1).collect();
+    if args.len() == 1 {
+        let input: char = parsechar(&args[0]);
+        if input == 'c' {
+            client::start();
+        } else if input == 's' {
+            server::start();
+        } else {
+            info();
+        }
+    } else {
+        info();
+    }
 }

src/server.rs

@@ -0,0 +1,4 @@
+pub fn start() {
+    println!("Starting the IRC Server");
+    todo!();
+}