cli-parser (#4)

Goal of this PR should be to integrate a working CLI parser so that commands can be sent to the Printer class to print text, such as
ptprnt -t=FooBar
also, standard flags for setting the output verbosity and help should be implemented

Reviewed-on: #4

src/libusbwrap/UsbDeviceFactory.cpp

@@ -29,10 +29,11 @@
 #include "libusbwrap/interface/IUsbDevice.hpp"
 
 namespace libusbwrap {
-UsbDeviceFactory::UsbDeviceFactory() {}
 
 UsbDeviceFactory::~UsbDeviceFactory() {
-    libusb_free_device_list(mLibusbDeviceList, 1);
+    if (mDeviceListInitialized) {
+        libusb_free_device_list(mLibusbDeviceList, 1);
+    }
 }
 
 std::vector<std::shared_ptr<IUsbDevice>> UsbDeviceFactory::findAllDevices() {
@@ -52,7 +53,7 @@ int UsbDeviceFactory::refreshDeviceList() {
     } else if (ret == 0) {
         spdlog::warn("No USB devices found");
     }
-
+    mDeviceListInitialized = true;
     return ret;
 }
 

src/libusbwrap/UsbDeviceFactory.hpp

@@ -24,12 +24,14 @@
 namespace libusbwrap {
 class UsbDeviceFactory : public IUsbDeviceFactory {
    public:
-    UsbDeviceFactory();
-    ~UsbDeviceFactory();
+    UsbDeviceFactory() = default;
+    virtual ~UsbDeviceFactory();
 
     // delete copy ctor and assignment
-    UsbDeviceFactory(const UsbDeviceFactory&)      = delete;
-    UsbDeviceFactory& operator=(UsbDeviceFactory&) = delete;
+    UsbDeviceFactory(const UsbDeviceFactory&)       = delete;
+    UsbDeviceFactory& operator=(UsbDeviceFactory&)  = delete;
+    UsbDeviceFactory(UsbDeviceFactory&&)            = delete;
+    UsbDeviceFactory& operator=(UsbDeviceFactory&&) = delete;
 
     bool init();
     /**
@@ -56,6 +58,7 @@ class UsbDeviceFactory : public IUsbDeviceFactory {
                                                                      uint16_t pid);
     // members
     libusb_context* mLibusbCtx{nullptr};
-    libusb_device** mLibusbDeviceList;
+    libusb_device** mLibusbDeviceList{};
+    bool mDeviceListInitialized = false;
 };
 }  // namespace libusbwrap