Basic arg handler

See https://docs.rs/getopts/latest/getopts/

q-pilater/.gitignore

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+/target/

q-pilater/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "getopts"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14dbbfd5c71d70241ecf9e6f13737f7b5ce823821063188d7e46c41d371eebd5"
+dependencies = [
+ "unicode-width",
+]
+
+[[package]]
+name = "q-pilater"
+version = "0.1.0"
+dependencies = [
+ "getopts",
+]
+
+[[package]]
+name = "unicode-width"
+version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"

q-pilater/Cargo.toml

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+[package]
+name = "q-pilater"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+getopts = "0.2"

q-pilater/src/main.rs

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+extern crate getopts;
+use getopts::Options;
+use std::env;
+
+fn print_usage(program: &str, opts: Options) {
+    let brief = format!("Usage: {} FILE [options]", program);
+    print!("{}", opts.usage(&brief));
+}
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    let program = args[0].clone();
+    let mut opts = Options::new();
+
+    // List args
+    opts.optopt("i","","interpreter mode","DIRECTORY");
+    opts.optflag("h", "help", "print this help menu");
+
+    // parse args
+    let matches = match opts.parse(&args[1..]) {
+        Ok(m) => { m }
+        Err(f) => { panic!("{}",f.to_string()) }
+    };
+
+    if matches.opt_present("h") {
+        print_usage(&program, opts);
+        return;
+    }
+}