Set up repo for Rust problems

rust/src/main.rs

@@ -0,0 +1,32 @@
+mod solutions;
+mod utils;
+use clap::Parser;
+use utils::run_solution;
+
+#[derive(clap::ValueEnum, Clone, Debug)]
+enum Problem {
+    REVP,
+}
+
+#[derive(Parser, Debug)]
+#[command(
+    name = "Rosalind Problems",
+    version = "v0.0.0",
+    author = "Peter Vlasveld <peter@vlasveld.info>",
+    about = "Solves Problems from rosalind.info"
+)]
+struct Args {
+    #[arg(short, long)]
+    problem: Problem,
+
+    #[arg(short, long)]
+    input_file: String,
+
+    #[arg(short, long, default_value = "output.txt")]
+    output_file: String,
+}
+
+fn main() {
+    let args = Args::parse();
+    run_solution(args.problem, &args.input_file, &args.output_file);
+}

rust/src/solutions/mod.rs

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+mod revp;
+pub use revp::revp;

rust/src/solutions/revp.rs

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+pub fn revp(file_content: String) -> String {
+    "placeholder".to_string()
+}

rust/src/utils.rs

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+use crate::{solutions, Problem};
+use std::{fs, io};
+
+pub fn run_solution(problem: Problem, in_file: &String, out_file: &String) {
+    // parse the input file into a string
+    let solution: io::Result<String> = match fs::read_to_string(in_file) {
+        Ok(content) => match problem {
+            Problem::REVP => Ok(solutions::revp(content)),
+        },
+        Err(e) => Err(e),
+    };
+
+    match solution {
+        Ok(out_content) => match fs::write(out_file, &out_content) {
+            Ok(_) => println!("{:?}", out_content),
+            Err(e) => println!("Error writing to output file: {e}"),
+        },
+        Err(e) => println!("An error occured reading the input file: {e}"),
+    };
+}