From fa17a7fda35e98f8284587d473ab907b0ef72290 Mon Sep 17 00:00:00 2001
From: EDiasAlberto <proxamon1@gmail.com>
Date: Fri, 31 May 2024 15:53:41 +0100
Subject: [PATCH] add inputted filename format checking

---
 src/fileaccess.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/fileaccess.c b/src/fileaccess.c
index aec7195..e3e5df8 100644
--- a/src/fileaccess.c
+++ b/src/fileaccess.c
@@ -1,7 +1,22 @@
 #include <stdio.h>
+#include <string.h>
 
-void writeBinaryFile(word instrs[], char outputFile[]){
+bool isValidFileFormat(char filename[], char expectedExtension[]){
+    int *pointLoc = strrchr(filename, '.');
 
+    if(pointLoc != NULL){
+        if(strcmp(pointLoc, expectedExtension)==0){
+            return true;
+        }
+    }
+    return false;
+}
+
+int writeBinaryFile(word instrs[], char outputFile[]){
+
+    if (!isValidFileFormat(filename, "bin")){
+        return(1);
+    }
 
     FILE *fp; 
     
@@ -9,6 +24,9 @@ void writeBinaryFile(word instrs[], char outputFile[]){
     fwrite(instrs, 4, sizeof(instrs), fp);
     fclose(fp);
 
+    return(0);
 }
 
-void readAssemblyFile()
\ No newline at end of file
+int readAssemblyFile() {
+
+}
\ No newline at end of file