read customer data

lab1/src/main.rs

@@ -10,8 +10,43 @@ struct CmdArgs {
     file: String,
 }
 
+#[derive(Debug)]
+struct Customer {
+    id: u32,
+    arrival_time: u32,
+    service_time: u32,
+}
+
+fn read_customers_from_file(path: &Path) -> Vec<Customer> {
+    let file = File::open(path).expect(&format!("Open file {} failed.", path.to_str().expect("Invalid path")));
+    let reader = io::BufReader::new(file);
+
+    let mut customers = Vec::new();
+
+    for line in reader.lines() {
+        let line = line.expect("Read lien failed");
+        let parts: Vec<&str> = line.split_whitespace().collect();
+        if parts.len() != 3 {
+            continue; // or handle the error
+        }
+
+        let customer = Customer {
+            id: parts[0].parse().expect("Invalid ID"),
+            arrival_time: parts[1].parse().expect("Invalid arrival time"),
+            service_time: parts[2].parse().expect("Invalid service time"),
+        };
+
+        customers.push(customer);
+    }
+    customers
+}
+
 fn main() {
     let args = CmdArgs::parse();
 
-    println!("File name: {}", args.file);
+    let customers = read_customers_from_file(Path::new(&args.file));
+
+    for cus in &customers {
+        println!("{:?}", cus);
+    }
 }

lab1/test_data/1.txt

@@ -0,0 +1,3 @@
+1 1 10
+2 5 2
+3 6 3