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DynLib.cpp

#include "DynLib.h"
#include <iostream>

using namespace SOME;

DynLib::DynLib():
        lib(NULL)
{}



bool DynLib::loadLibrary(const char* filepath)
{
    unloadLibrary();

    lib = LoadLibrary(filepath);
    if (lib == NULL)
    {
        LPVOID lpMsgBuf;
        FormatMessage(
            FORMAT_MESSAGE_ALLOCATE_BUFFER |
            FORMAT_MESSAGE_FROM_SYSTEM |
            FORMAT_MESSAGE_IGNORE_INSERTS,
            NULL,
            GetLastError(),
            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),   // Default language
            (LPTSTR) &lpMsgBuf,
            0,
            NULL
        );
        // Process any inserts in lpMsgBuf.
        // ...
        // Display the string.
        std::cerr << "Error Loading " << filepath << ": " << (LPCTSTR)lpMsgBuf << std::endl;
        // Free the buffer.
        LocalFree( lpMsgBuf );

        return valid_lib = false;
    }

    file_path = filepath;
    return valid_lib = true;
}

void* DynLib::getFunction(const char* func)
{
    if (!valid_lib)
    {
        std::cerr << "Cannot getFunction out of invalid lib\n";
        return 0;
    }

    void* func_ptr = (void*)GetProcAddress(lib, func);

    if (!func_ptr)
    {
        LPVOID lpMsgBuf;
        FormatMessage(
            FORMAT_MESSAGE_ALLOCATE_BUFFER |
            FORMAT_MESSAGE_FROM_SYSTEM |
            FORMAT_MESSAGE_IGNORE_INSERTS,
            NULL,
            GetLastError(),
            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),   // Default language
            (LPTSTR) &lpMsgBuf,
            0,
            NULL
        );
        std::cerr << "Could not load function: " << func << ". Error message: " << (LPCTSTR)lpMsgBuf << std::endl;
        LocalFree(lpMsgBuf);
        valid_lib = false;
        return 0;
    }
    return func_ptr;
}

void DynLib::unloadLibrary()
{
    if (lib)
    {
        if (FreeLibrary(lib) == 0)
        {
            LPVOID lpMsgBuf;
            FormatMessage(
                FORMAT_MESSAGE_ALLOCATE_BUFFER |
                FORMAT_MESSAGE_FROM_SYSTEM |
                FORMAT_MESSAGE_IGNORE_INSERTS,
                NULL,
                GetLastError(),
                MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),   // Default language
                (LPTSTR) &lpMsgBuf,
                0,
                NULL
            );
            // Process any inserts in lpMsgBuf.
            // ...
            // Display the string.
            std::cerr << (LPCTSTR)lpMsgBuf << std::endl;
            // Free the buffer.
            LocalFree( lpMsgBuf );
        }
    }
    lib = NULL;
    valid_lib = false;
}

bool DynLib::parsePath( const std::string &path, std::string &return_dir, std::string &return_pattern )
{
    return false;
}

std::list < std::string > DynLib::enumPlatformDirectory( const std::string& path )
{
    std::list < std::string > willis;
    return willis;
}

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