cross-platform modules setup

src/lib.rs

@@ -4,6 +4,10 @@ use std::net::{IpAddr, SocketAddr};
 
 use netstat2::{get_sockets_info, AddressFamilyFlags, ProtocolFlags, ProtocolSocketInfo, TcpState};
 
+pub use platform::hi_cross;
+
+mod platform;
+
 /// A struct representing a process that is listening on a socket
 pub struct Listener {
     /// The process ID of the listener process

src/main.rs

@@ -1,6 +1,8 @@
 use std::net::IpAddr;
 use std::str::FromStr;
 
+use listeners::hi_cross;
+
 fn main() {
     let print_title = |title: &str| {
         let n_repeat = 40 - title.len() / 2;
@@ -15,12 +17,13 @@ fn main() {
 
     let ip = IpAddr::from_str(
         &std::env::args()
-            .skip(1)
-            .next()
+            .nth(1)
             .expect("Expected IP address as argument to program"),
     )
     .expect("The provided IP address is not valid");
 
+    hi_cross();
+
     print_title(&format!("get_for_nullnet({ip})"));
     for pname in listeners::get_for_nullnet(ip) {
         println!("{pname}");

src/platform/common.rs

@@ -0,0 +1,5 @@
+use crate::platform::hi;
+
+pub fn hi_cross() {
+    hi();
+}

src/platform/linux.rs

@@ -0,0 +1,3 @@
+pub(crate) fn hi() {
+    println!("Hi from Linux");
+}

src/platform/macos.rs

@@ -0,0 +1,3 @@
+pub(crate) fn hi() {
+    println!("Hi from macOS");
+}

src/platform/mod.rs

@@ -0,0 +1,20 @@
+mod common;
+pub use common::hi_cross;
+
+/* windows */
+#[cfg(target_os = "windows")]
+mod windows;
+#[cfg(target_os = "windows")]
+use windows::hi;
+
+/* macos */
+#[cfg(target_os = "macos")]
+mod macos;
+#[cfg(target_os = "macos")]
+use macos::hi;
+
+/* linux */
+#[cfg(target_os = "linux")]
+mod linux;
+#[cfg(target_os = "linux")]
+use linux::hi;

src/platform/windows.rs

@@ -0,0 +1,3 @@
+pub(crate) fn hi() {
+    println!("Hi from Windows");
+}