Add some boiler plate generation to init_rust

1 files changed, 58 insertions, 1 deletions

diff --git a/bin/init_rust.sh b/bin/init_rust.sh
index 5388a69..681ecf8 100755
--- a/bin/init_rust.sh
+++ b/bin/init_rust.sh
@@ -20,7 +20,64 @@ cat > 'Cargo.toml' << END_OF_TOML
 name = "day${DAY}"
 version = "0.1.0"
 authors = ["${GIT_USER} <${GIT_EMAIL}>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
+aoc = { path = "../../../common/rust/aoc" }
+anyhow = "1.0"
 END_OF_TOML
+
+cat > 'src/main.rs' << END_OF_SRC
+use {
+    anyhow::{
+        anyhow,
+        Context,
+        Result,
+    },
+    std::{
+        env::args,
+        fs::File,
+        io::{
+            BufRead,
+            BufReader,
+        },
+        path::Path,
+    },
+};
+
+fn read_input<T: AsRef<Path>>(filename: T) -> Result<Vec<usize>> {
+    let reader = BufReader::new(File::open(filename)?);
+
+    reader.lines().map(
+        |v| {
+            let s = v?;
+            let n = s.parse()?;
+            Ok(n)
+        }
+    ).collect()
+}
+
+fn part1<'a, I: IntoIterator<Item = &'a usize>>(input: I) -> Result<usize> {
+    Ok(0)
+}
+
+fn part2<'a, I: IntoIterator<Item = &'a usize>>(input: I) -> Result<usize> {
+    Ok(0)
+}
+
+fn main() -> Result<()> {
+    let ( do_part_1, do_part_2 ) = aoc::do_parts();
+
+    let filename = args().nth(1).ok_or(anyhow!("Missing input filename"))?;
+    let input = read_input(filename).context("Could not read input")?;
+    if do_part_1 {
+        let solution = part1(&input).context("No solution for part 1")?;
+        println!("Part1, solution found to be: {}", solution);
+    }
+    if do_part_2 {
+        let solution = part2(&input).context("No solution for part 2")?;
+        println!("Part2, solution found to be: {}", solution);
+    }
+    Ok(())
+}
+END_OF_SRC