From 802bb6514157161b2431748da95b5e93f859b024 Mon Sep 17 00:00:00 2001
From: fafato1 <fafato.889@gmail.com>
Date: Sat, 16 Jul 2022 05:44:25 -0300
Subject: [PATCH 1/2] add extension checking

---
 go.mod  | 2 +-
 main.go | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/go.mod b/go.mod
index d3f4e74..155a502 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
-module github.com/thzoid/brainfuck
+module github.com/thzoid/brainf
 
 go 1.18
diff --git a/main.go b/main.go
index a50096e..712b0c9 100644
--- a/main.go
+++ b/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 )
 
 var memory = []byte{0}
@@ -56,9 +57,17 @@ func runOp(i int, c byte) int {
 
 func main() {
 	p, err := os.ReadFile(os.Args[1])
+
+	exten := filepath.Ext(os.Args[1])
+
+	if exten != ".bf" {
+		panic("Format not accept! " + exten)
+	}
+
 	if err != nil {
 		panic(err)
 	}
+
 	program = p
 
 	for i := 0; i < len(program); i++ {

From 8db4c20e25dadc52f38918ce7741cd20f0c54eda Mon Sep 17 00:00:00 2001
From: fafato1 <fafato.889@gmail.com>
Date: Sat, 30 Jul 2022 03:20:44 -0300
Subject: [PATCH 2/2] fix the code review in pr

---
 main.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/main.go b/main.go
index 712b0c9..19d5f53 100644
--- a/main.go
+++ b/main.go
@@ -58,16 +58,16 @@ func runOp(i int, c byte) int {
 func main() {
 	p, err := os.ReadFile(os.Args[1])
 
-	exten := filepath.Ext(os.Args[1])
-
-	if exten != ".bf" {
-		panic("Format not accept! " + exten)
-	}
+	ext := filepath.Ext(os.Args[1])
 
 	if err != nil {
 		panic(err)
 	}
 
+	if ext != ".bf" {
+		panic("provided script must be a .bf file")
+	}
+
 	program = p
 
 	for i := 0; i < len(program); i++ {