feat(Cmake/Database): separate database lib from common (#5334)

* feat(Core/Database): separate databse lib from common

* 1

src/server/database/Database/Field.cpp

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#include "Field.h"
+#include "Errors.h"
+
+Field::Field()
+{
+    data.value = nullptr;
+    data.type = MYSQL_TYPE_NULL;
+    data.length = 0;
+    data.raw = false;
+}
+
+Field::~Field()
+{
+    CleanUp();
+}
+
+void Field::SetByteValue(const void* newValue, const size_t newSize, enum_field_types newType, uint32 length)
+{
+    if (data.value)
+        CleanUp();
+
+    // This value stores raw bytes that have to be explicitly cast later
+    if (newValue)
+    {
+        data.value = new char[newSize];
+        memcpy(data.value, newValue, newSize);
+        data.length = length;
+    }
+    data.type = newType;
+    data.raw = true;
+}
+
+void Field::SetStructuredValue(char* newValue, enum_field_types newType, uint32 length)
+{
+    if (data.value)
+        CleanUp();
+
+    // This value stores somewhat structured data that needs function style casting
+    if (newValue)
+    {
+        data.value = new char[length + 1];
+        memcpy(data.value, newValue, length);
+        *(reinterpret_cast<char*>(data.value) + length) = '\0';
+        data.length = length;
+    }
+
+    data.type = newType;
+    data.raw = false;
+}
+
+std::vector<uint8> Field::GetBinary() const
+{
+    std::vector<uint8> result;
+    if (!data.value || !data.length)
+        return result;
+
+    result.resize(data.length);
+    memcpy(result.data(), data.value, data.length);
+    return result;
+}
+
+void Field::GetBinarySizeChecked(uint8* buf, size_t length) const
+{
+    ASSERT(data.value && (data.length == length));
+    memcpy(buf, data.value, length);
+}