.text
.type capitalize, @function
.global capitalize


capitalize:
	MOV	$0, %rdx
	MOV	$0, %rcx

loop:
	MOVB	(%rcx, %rdi, 1), %r8b
	CMP	$0, %r8b
	JE		end
   CMP	$('.'), %r8b
   JE		check_if_next_is_small_letter
   CMP	$('?'), %r8b
   JE		check_if_next_is_small_letter
   CMP	$('!'), %r8b
   JE		check_if_next_is_small_letter
   JMP	loop

check_if_next_is_small_letter:
	MOVB (%rcx, %rdi, 1), %r8b
	CMP	$0, %r8b
	JE		end
	CMP	$' ', %r8b
	JE		check_if_next_is_small_letter
	CMP	$'\n', %r8b
	JE		check_if_next_is_small_letter

change_char:
   CMP	$'a', %r8b
   JL		loop
   CMP	$'z', %r8b
   JG		loop
   SUBB	$32, %r8b

end:
	ret