feat: 2025 boilerplate

2025/Cargo.lock

@@ -2,6 +2,69 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "aoc2025"
 version = "0.1.0"
+dependencies = [
+ "itertools",
+ "regex",
+]
+
+[[package]]
+name = "either"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
+
+[[package]]
+name = "itertools"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+dependencies = [
+ "either",
+]
+
+[[package]]
+name = "memchr"
+version = "2.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
+
+[[package]]
+name = "regex"
+version = "1.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "843bc0191f75f3e22651ae5f1e72939ab2f72a4bc30fa80a066bd66edefc24d4"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5276caf25ac86c8d810222b3dbb938e512c55c6831a10f3e6ed1c93b84041f1c"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"

2025/Cargo.toml

@@ -4,3 +4,5 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+itertools = "0.14.0"
+regex = "1.12.2"

2025/README.md

@@ -0,0 +1,27 @@
+# Advent of Code 2025 - Rust
+
+## Daily Workflow
+
+To add a new day's solution (e.g., Day 2):
+
+1.  **Create the Source File**:
+    - Copy `src/days/day01.rs` to `src/days/day02.rs`.
+    - Update the logic in `part1` and `part2`.
+
+2.  **Register the Module**:
+    - Open `src/days/mod.rs`.
+    - Add `pub mod day02;` at the top.
+    - Add a match arm for the new day:
+      ```rust
+      2 => day02::run(),
+      ```
+
+3.  **Add Input**:
+    - Create a new file `inputs/day02.txt`.
+    - Paste your puzzle input into it.
+
+4.  **Run**:
+    - Execute the solution with:
+      ```bash
+      cargo run 2
+      ```

2025/inputs/day01.txt

@@ -0,0 +1 @@
+test input

2025/src/days/day01.rs

@@ -0,0 +1,17 @@
+use crate::utils;
+
+pub fn run() {
+    let input = utils::read_input(1);
+    println!("Part 1: {}", part1(&input));
+    println!("Part 2: {}", part2(&input));
+}
+
+fn part1(_input: &str) -> String {
+    // TODO: Solve part 1
+    "Not implemented".to_string()
+}
+
+fn part2(_input: &str) -> String {
+    // TODO: Solve part 2
+    "Not implemented".to_string()
+}

2025/src/days/mod.rs

@@ -0,0 +1,8 @@
+pub mod day01;
+
+pub fn run_day(day: u8) {
+    match day {
+        1 => day01::run(),
+        _ => println!("Day {} not implemented yet", day),
+    }
+}

2025/src/main.rs

@@ -1,3 +1,23 @@
+mod days;
+mod utils;
+
+use std::env;
+
 fn main() {
-    println!("Hello, world!");
+    let args: Vec<String> = env::args().collect();
+    
+    if args.len() < 2 {
+        println!("Usage: cargo run <day>");
+        return;
+    }
+
+    let day: u8 = match args[1].parse() {
+        Ok(d) => d,
+        Err(_) => {
+            println!("Invalid day number");
+            return;
+        }
+    };
+
+    days::run_day(day);
 }

2025/src/utils.rs

@@ -0,0 +1,6 @@
+use std::fs;
+
+pub fn read_input(day: u8) -> String {
+    let path = format!("inputs/day{:02}.txt", day);
+    fs::read_to_string(&path).unwrap_or_else(|_| panic!("Could not read file: {}", path))
+}