day5: Parse maps

days/05/rust/part1/src/main.rs

@@ -1,7 +1,25 @@
 use std::fs;
 
-fn parse_steps(content: &str) -> Vec<Vec<Vec<u32>>> {
+fn parse_steps(lines: std::str::Lines) -> Vec<Vec<Vec<u32>>> {
     let mut steps: Vec<Vec<Vec<u32>>> = Vec::new();
+    let mut step: Vec<Vec<u32>> = Vec::new();
+    for line in lines {
+        if line.contains("-to-") {
+            step = Vec::new();
+            steps.push(step);
+        } else if line != "" {
+            let numbers: Vec<&str> = line.split(" ").collect();
+            let numbers: Vec<u32> = numbers
+                .iter()
+                .map(|string| {
+                    let number: u32 = string.parse().unwrap();
+                    number
+                })
+                .collect();
+            let n = steps.len();
+            steps[n - 1].push(numbers);
+        }
+    }
     steps
 }
 
@@ -19,6 +37,10 @@ fn main() {
         .expect("Should have a seed")
         .split(" ")
         .collect();
+    let steps = parse_steps(lines);
+    for step in steps {
+        println!("{:?}", step);
+    }
     let seeds: Vec<u32> = seeds
         .iter()
         .map(|string| {