From aac3ca40fe95eaa4c834c665ff470d2fb19a9201 Mon Sep 17 00:00:00 2001
From: greg <greg.shuflin@protonmail.com>
Date: Wed, 28 Dec 2016 15:56:02 -0800
Subject: [PATCH] Add getopts

---
 Cargo.toml  |  1 +
 src/main.rs | 23 ++++++++++++++++-------
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 2249978..bea3eb0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,4 +8,5 @@ authors = ["greg <greg.shuflin@protonmail.com>"]
 simplerepl = { path = "../simplerepl" }
 llvm-sys = "*"
 take_mut = "0.1.3"
+getopts = "*"
 
diff --git a/src/main.rs b/src/main.rs
index e2dd182..33d1db3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,6 @@
 #![feature(advanced_slice_patterns, slice_patterns, box_patterns)]
-
 extern crate simplerepl;
+extern crate getopts;
 
 use std::path::Path;
 use std::fs::File;
@@ -22,12 +22,21 @@ mod compilation;
 mod llvm_wrap;
 
 fn main() {
-    let args: Vec<String> = std::env::args().collect();
-    if let Some(filename) = args.get(1) {
-        run_noninteractive(filename);
-    } else {
-        run_repl();
-    }
+    let option_matches = program_options().parse(std::env::args()).expect("Could not parse options"); 
+    match option_matches.free[..] {
+        [] | [_] => {
+            run_repl();
+        },
+        [_, ref filename, ..] => {
+            run_noninteractive(filename);
+        }
+    };
+}
+
+fn program_options() -> getopts::Options {
+    let mut options = getopts::Options::new();
+    options.optflag("i", "interpret", "Interpret source file instead of compiling");
+    options
 }
 
 fn run_noninteractive(filename: &String) {