Use clap for processing arguments.

enemize/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1"
+clap = { version = "3.1.18", features = ["derive"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 thiserror = "1"

enemize/src/main.rs

@@ -1,3 +1,33 @@
-fn main() {
-    println!("Hello, world!");
+use std::path::PathBuf;
+
+use clap::Parser;
+
+/// Randomizes enemy placements in The Legend of Zelda: A Link to the Past for the Super Nintendo
+/// Entertainment System
+#[derive(Debug, Parser)]
+#[clap(author, version, about)]
+struct Args {
+    /// path to the base rom file
+    rom: PathBuf,
+    /// seed number
+    #[clap(short, long)]
+    seed: Option<u32>,
+    /// path to the base2patched.json (not used in binary mode)
+    #[clap(short, long, required_unless_present = "binary")]
+    base: Option<PathBuf>,
+    /// path to the randomizerPatch.json (not used in binary mode)
+    #[clap(short, long, required_unless_present = "binary")]
+    randomizer: Option<PathBuf>,
+    /// path to the enemizerOptions.json
+    #[clap(short, long)]
+    enemizer: PathBuf,
+    /// path to the intended output file
+    output: PathBuf,
+    /// operate in binary mode (takes already randomized SFC and applies enemizer directly to ROM)
+    #[clap(long)]
+    binary: bool,
+}
+
+fn main() {
+    let args = Args::parse();
 }