node and bits

3

@@ -0,0 +1,24 @@
+use std::collections::HashMap;
+use std::fs::File;
+use std::io::prelude::*;
+
+fn main() -> std::io::Result<()> {
+    let mut file = File::open("test.txt")?;
+    let mut contents = String::new();
+    let mut hashmap: HashMap<char, i32> = HashMap::new();
+    file.read_to_string(&mut contents)?;
+    for c in contents.chars() {
+        if let Some(value) = hashmap.get(&c) {
+            hashmap.insert(value, hashmap.get(value) + 1);
+        }
+        //println!("{:?}", contents.chars().nth(i));
+    }
+    /*
+    contents.push('é');
+    let mut file2 = File::create("fo.txt")?;
+    let test: i64 = 10000000;
+    //writeln!(file2, "{}", test)?;
+    file2.write_all(&test.to_be_bytes())?;
+    */
+    Ok(())
+}

fo.txt

@@ -1,2 +1,23 @@
-éè
+r:1
-é
+l:3
+
+:1
+a:6
+i:3
+k:1
+v:1
+o:3
+ :10
+s:5
+S:1
+d:2
+j:1
+g:1
+t:2
+e:4
+,:1
+m:2
+f:1
+u:3
+n:1
+p:1

src/byte_writer.rs

@@ -0,0 +1,29 @@
+pub fn string_to_binary(bits: &str) -> Vec<u8> {
+    let mut bytes = Vec::new();
+    let mut current_byte: u8 = 0;
+
+    let mut count: u8 = 0;
+    for c in bits.chars() {
+        current_byte <<= 1;
+        if c == '1' {
+            current_byte += 1;
+        }
+        count += 1;
+
+        if count >= 8 {
+            bytes.push(current_byte);
+            current_byte = 0;
+            count = 0;
+        }
+    }
+
+    if count > 0 {
+        while count < 8 {
+            current_byte <<= 1;
+            count += 1;
+        }
+        bytes.push(current_byte);
+    }
+
+    bytes
+}

src/main.rs

@@ -1,15 +1,61 @@
+use std::collections::HashMap;
+use std::env;
 use std::fs::File;
 use std::io::prelude::*;
 
+mod byte_writer;
+mod node;
+
+use byte_writer::string_to_binary;
+use node::Node;
+
 fn main() -> std::io::Result<()> {
-    let mut file = File::open("test.txt")?;
+    let args: Vec<String> = env::args().collect();
-    let mut contents = String::new();
+
-    file.read_to_string(&mut contents)?;
+    // Afficher les arguments
-    for i in 0..contents.len() {
+    println!("Arguments passés au programme :");
-        println!("{:?}", contents.chars().nth(i));
+    for (index, arg) in args.iter().enumerate() {
+        println!("Argument {}: {}", index, arg);
     }
-    contents.push('é');
+
-    let mut file2 = File::create("fo.txt")?;
+    let file = File::open("test.txt")?;
-    file2.write_all(contents.as_bytes())?;
+    //let mut file2 = File::create("fo.txt")?;
+
+    let map = get_map_file(file).expect("Failed to load!");
+    let vec = nodes_at_vec(map);
+    let root = node::create_tree(vec);
+    eprintln!("root.n = {:#?}", root.n);
+
+    let mut v = string_to_binary("101010111010010101");
+    eprintln!("v = {:#?}", v);
+    //writeln!(file2, "{}", tes;t)?;
+    //file2.write_all(&test.to_be_bytes())?;
+    //file2.write_all(&[*key as u8])?;
+    //writeln!(file2, ":{}", value)?;
+    //file2.write_all(&value.to_be_bytes())?;
     Ok(())
 }
+
+fn get_map_file(mut file: File) -> Result<HashMap<char, i32>, std::io::Error> {
+    let mut hashmap: HashMap<char, i32> = HashMap::new();
+    let mut contents = String::new();
+    file.read_to_string(&mut contents)?;
+    for c in contents.chars() {
+        let counter = hashmap.entry(c).or_insert(0);
+        *counter += 1;
+    }
+    Ok(hashmap)
+}
+
+fn nodes_at_vec(map: HashMap<char, i32>) -> Vec<Node> {
+    let mut nodes = Vec::new();
+
+    for (key, value) in &map {
+        let mut node = Node::new();
+        node.set_char(*key);
+        node.set_counter(*value);
+        nodes.push(node);
+    }
+    nodes.sort_by(|a, b| a.val.cmp(&b.val));
+    nodes
+}

src/node.rs

@@ -0,0 +1,43 @@
+pub struct Node {
+    pub val: Option<Box<char>>,
+    pub l: Option<Box<Node>>,
+    pub r: Option<Box<Node>>,
+    pub n: i32,
+}
+
+impl Node {
+    pub fn new() -> Self {
+        Node {
+            val: None,
+            l: None,
+            r: None,
+            n: 0,
+        }
+    }
+
+    pub fn set_char(&mut self, v: char) {
+        self.val = Some(Box::new(v));
+    }
+
+    pub fn set_counter(&mut self, n: i32) {
+        self.n = n;
+    }
+
+    pub fn insert(&mut self, l: Node, r: Node) {
+        self.l = Some(Box::new(l));
+        self.r = Some(Box::new(r));
+    }
+}
+
+pub fn create_tree(mut nodes: Vec<Node>) -> Node {
+    while nodes.len() > 1 {
+        nodes.sort_by_key(|node| node.n);
+        let mut new_root = Node::new();
+        let l = nodes.remove(0);
+        let r = nodes.remove(0);
+        new_root.set_counter(l.n + r.n);
+        new_root.insert(l, r);
+        nodes.push(new_root);
+    }
+    nodes.pop().unwrap()
+}

test.txt

@@ -1 +1 @@
-éè
+coucou