Second huge commit

2016/day04/src/main.rs

@@ -0,0 +1,74 @@
+extern crate regex;
+
+use std::io::Read;
+use std::fs::File;
+use regex::Regex;
+use std::collections::HashMap;
+
+///// THIS IS NOT WORKING RIGHT. :(
+
+// fn get_lines(input: &String) {
+//     let lines: Vec<(&String, i32, &String)> = vec![];
+//     lines.push(("Foo", 42, "bar"));
+//     return lines;
+// }
+
+// fn part_1(input: &Vec<(String, i32, String)>) {
+//     println!("Started part 1");
+// }
+
+#[derive(Debug)]
+struct Room {
+    name: String,
+    sector: i32,
+    check: String,
+}
+
+fn part_1(input: &String) {
+    let re = Regex::new(r"([a-z\\-]+)-([:digit:]+)\[([:lower:]+)\]").unwrap();
+
+    let sum = 0;
+    for cap in re.captures_iter(input) {
+        let room = Room {   name: String::from(cap.at(1).unwrap_or("")),
+                            sector: cap.at(2).unwrap_or("0").parse().unwrap_or(0),
+                            check: String::from(cap.at(3).unwrap_or("")),
+                        };
+        let mut charMap: HashMap<char, i32> = HashMap::new();
+        for ch in room.name.replace("-", "").chars() {
+            let l = charMap.entry(ch).or_insert(0);
+            *l += 1;
+        }
+        println!("{:?}", charMap);
+        //println!("{:?}", room);
+        //let mut letters: Vec<char> = .collect();
+        //println!("{:?}", letters.sort());
+    }
+    println!("Part 1: Total sum of valid rooms is {}", sum);
+
+    // let sum = input
+    // .lines()
+    // .map(|l|
+    //     re.captures(l).unwrap()
+    //     //.split(&re)
+    //     //.map(|&v| Room { name: v[0] + v[1] + v[2], sector: v[3].parse::<i32>().unwrap(), checksum: v[4] })
+    //     //.collect::<Vec<_>>()
+    //     //.turn into collection of items
+    //     //.collect
+    //     )
+    // .map(|c| c.at(0))
+    // .collect::<Vec<_>>()
+    // // //.filter out decoy rooms
+    // // //.collect
+    // // //.fold and sum the sectors
+    // // //.unwrap?
+    //  .len();
+    // println!("Part 1: Sum was {}", sum);
+}
+
+fn main() {
+    let mut file = File::open("./data").expect("could not open file");
+    let mut input = String::new();
+    file.read_to_string(&mut input).expect("could not read file");
+
+    part_1(&input);
+}