add: get_line

src/drivers/keyboard.c

@@ -43,3 +43,11 @@ void keyboard_handler(struct registers *regs)
 		line_status = NEWLINE;
 	}
 }
+
+char *get_line(void)
+{
+	while (line_status != NEWLINE)
+		;
+	line_status = READING;
+	return screen->line;
+}