// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include <kiwano/core/Library.h>

namespace kiwano
{

Library::Library()
    : instance_(nullptr)
{
}

Library::Library(const String& lib)
    : instance_(nullptr)
{
    Load(lib);
}

Library::~Library()
{
    Free();
}

bool Library::Load(const String& lib)
{
    instance_ = ::LoadLibraryA(lib.c_str());
    return IsValid();
}

bool Library::IsValid() const
{
    return instance_ != nullptr;
}

void Library::Free()
{
    if (instance_)
    {
        ::FreeLibrary(instance_);
        instance_ = nullptr;
    }
}

FARPROC Library::GetProcess(const String& proc_name)
{
    KGE_ASSERT(instance_ != nullptr);

    if (!IsValid())
        return nullptr;
    return GetProcAddress(instance_, proc_name.c_str());
}

}  // namespace kiwano
