From 921497ab455cc651af0df8cdc914870b6dd3a8f1 Mon Sep 17 00:00:00 2001
From: alban <git@albancrommer.com>
Date: Wed, 23 Nov 2022 10:49:11 +0100
Subject: [PATCH] init

---
 .gitignore  |  1 +
 Cargo.lock  |  5 +++++
 Cargo.toml  |  9 +++++++++
 src/main.rs | 39 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 54 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..920bf96
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "tuto"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..c3d2e06
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "tuto"
+version = "0.1.0"
+authors = ["alban <git@albancrommer.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..0ee65ff
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,39 @@
+use std::env;
+
+#[derive(Debug)]
+enum Maybe<T> {
+  Just(T),
+  Nothing
+}
+
+fn main() {
+  let arg = env::args().nth(1);
+
+  println!("{:?}", Maybe::Just(42));
+
+  match arg {
+    Some(result) => {
+      let ip = ip_to_int(&result);
+      println!("{:b}", ip);
+    },
+    None => println!("need one arg")
+  }
+
+
+
+}
+
+fn ip_to_int(ip_str: &str) -> u32 {
+    let mut tbl : Vec<&str> = ip_str.split(".")
+      .collect();
+    tbl.reverse();
+
+    let mut ip = 0_u32;
+
+  for (idx, s) in tbl.iter().enumerate() {
+    let nbr : u8 = s.parse()
+      .expect("parse fail");
+    ip += (nbr as u32) << 8*idx;
+  }
+  ip
+}