Started work on database handling.

src/io/Usb_LNX.cpp

@@ -0,0 +1,106 @@
+#include "ehs/io/Usb_LNX.h"
+
+#include <fcntl.h>
+#include <unistd.h>
+
+namespace ehs
+{
+    Usb::~Usb()
+    {
+
+    }
+
+    Usb::Usb()
+        : hdl(-1)
+    {
+    }
+
+    Usb::Usb(const UInt_32 bus, const UInt_32 address)
+        : UsbBase(bus, address), hdl(-1)
+    {
+        Initialize();
+    }
+
+    Usb::Usb(Usb&& usb) noexcept
+        : UsbBase((UsbBase&&)usb), hdl(usb.hdl)
+    {
+        usb.hdl = -1;
+    }
+
+    Usb::Usb(const Usb& usb)
+        : UsbBase(usb), hdl(-1)
+    {
+        Initialize();
+    }
+
+    Usb& Usb::operator=(Usb&& usb) noexcept
+    {
+        if (this == &usb)
+            return *this;
+
+        UsbBase::operator=((UsbBase&&)usb);
+
+        hdl = usb.hdl;
+
+        usb.hdl = -1;
+
+        return *this;
+    }
+
+    Usb& Usb::operator=(const Usb& usb)
+    {
+        if (this == &usb)
+            return *this;
+
+        UsbBase::operator=(usb);
+
+        hdl = -1;
+
+        Initialize();
+
+        return *this;
+    }
+
+    void Usb::Initialize()
+    {
+        if (!IsValid())
+        {
+            EHS_LOG_INT("Error", 0, "Cannot initialize with an invalid object.");
+            return;
+        }
+
+        if (IsInitialized())
+        {
+            EHS_LOG_INT("Warning", 1, "Object is already initialized.");
+            return;
+        }
+
+        hdl = open("/dev/bus/usb/" + Str_8::FromNum(GetBus()) + "/" + Str_8::FromNum(GetAddress()), O_RDWR);
+        if (hdl == -1)
+            EHS_LOG_INT("Error", 2, "Failed to connect to USB device.");
+    }
+
+    void Usb::Release()
+    {
+        if (!IsValid())
+        {
+            EHS_LOG_INT("Error", 0, "Cannot release with an invalid object.");
+            return;
+        }
+
+        if (!IsInitialized())
+        {
+            EHS_LOG_INT("Warning", 1, "Object is already released.");
+            return;
+        }
+
+        close(hdl);
+
+        hdl = -1;
+    }
+
+    bool Usb::IsInitialized() const
+    {
+        return hdl != -1;
+    }
+}