Produce machine code in the path of the assembly file

Add.asm

@@ -1,13 +0,0 @@
-// This file is part of www.nand2tetris.org
-// and the book "The Elements of Computing Systems"
-// by Nisan and Schocken, MIT Press.
-// File name: projects/06/add/Add.asm
-
-// Computes R0 = 2 + 3  (R0 refers to RAM[0])
-
-@2
-D=A // hi
-@3
-D=D+A
-@0
-M=D

MaxL.asm

@@ -1,25 +0,0 @@
-// This file is part of www.nand2tetris.org
-// and the book "The Elements of Computing Systems"
-// by Nisan and Schocken, MIT Press.
-// File name: projects/06/max/MaxL.asm
-
-// Symbol-less version of the Max.asm program.
-
-@0
-D=M
-@1
-D=D-M
-@12
-D;JGT
-@1
-D=M
-@2
-M=D
-@16
-0;JMP
-@0             
-D=M
-@2
-M=D
-@16
-0;JMP

src/main.rs

@@ -49,8 +49,8 @@ fn main() {
         .unwrap_or("")
     {
         "asm" => {
-            let filename = path.file_stem().unwrap().to_str().unwrap();
-            let mut file = fs::File::create(format!("{}.hack", filename)).unwrap();
+            let filepath = path.canonicalize().unwrap().to_str().unwrap().replace("asm", "hack");
+            let mut file = fs::File::create(filepath).unwrap();
             let content = fs::read_to_string(&path).expect("You must provide a correct filepath!");
             let re = Regex::new(r"\s*\/\/.*").unwrap();
             let processed: String = content