From 4710909b98099b0b6c2525c9775c66dfd6b93686 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Mon, 19 Dec 2022 19:26:10 +0000
Subject: [PATCH] Add aoc crate that reads file from input argument; use it in
 the day01 crate

---
 2022/aoc/Cargo.lock    |  7 +++++++
 2022/aoc/Cargo.toml    |  8 ++++++++
 2022/aoc/src/lib.rs    |  8 ++++++++
 2022/day01/Cargo.lock  |  7 +++++++
 2022/day01/Cargo.toml  |  1 +
 2022/day01/src/main.rs | 10 +++-------
 6 files changed, 34 insertions(+), 7 deletions(-)
 create mode 100644 2022/aoc/Cargo.lock
 create mode 100644 2022/aoc/Cargo.toml
 create mode 100644 2022/aoc/src/lib.rs

diff --git a/2022/aoc/Cargo.lock b/2022/aoc/Cargo.lock
new file mode 100644
index 0000000..a5b53ef
--- /dev/null
+++ b/2022/aoc/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aoc"
+version = "0.1.0"
diff --git a/2022/aoc/Cargo.toml b/2022/aoc/Cargo.toml
new file mode 100644
index 0000000..706d2e1
--- /dev/null
+++ b/2022/aoc/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "aoc"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2022/aoc/src/lib.rs b/2022/aoc/src/lib.rs
new file mode 100644
index 0000000..7b9bd86
--- /dev/null
+++ b/2022/aoc/src/lib.rs
@@ -0,0 +1,8 @@
+use std::{env, fs};
+
+pub fn read_input_file_to_string() -> String {
+    let args: Vec<String> = env::args().collect();
+    let filename = args.get(1).expect("Missing filename argument");
+    fs::read_to_string(&filename).expect("Unable to read file")
+}
+
diff --git a/2022/day01/Cargo.lock b/2022/day01/Cargo.lock
index ae5bfe8..e0a4e9a 100644
--- a/2022/day01/Cargo.lock
+++ b/2022/day01/Cargo.lock
@@ -2,6 +2,13 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aoc"
+version = "0.1.0"
+
 [[package]]
 name = "day1"
 version = "0.1.0"
+dependencies = [
+ "aoc",
+]
diff --git a/2022/day01/Cargo.toml b/2022/day01/Cargo.toml
index a3c4e52..0503676 100644
--- a/2022/day01/Cargo.toml
+++ b/2022/day01/Cargo.toml
@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+aoc = { path = "../aoc" }
diff --git a/2022/day01/src/main.rs b/2022/day01/src/main.rs
index 2513bcd..bd0083e 100644
--- a/2022/day01/src/main.rs
+++ b/2022/day01/src/main.rs
@@ -1,5 +1,4 @@
-use std::env;
-use std::fs;
+use aoc;
 use std::str::Lines;
 
 fn get_calorie_totals(lines: Lines) -> Vec<u32> {
@@ -23,12 +22,9 @@ fn get_calorie_totals(lines: Lines) -> Vec<u32> {
 }
 
 fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let filename = args.get(1).expect("Missing filename argument");
-
-    let file_contents = fs::read_to_string(&filename).expect("Unable to read file");
+    let file_contents = aoc::read_input_file_to_string();
     let lines = file_contents.lines();
+
     let elves = get_calorie_totals(lines);
 
     println!(