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DynLib.cpp

/********************************************************************
** Copyright (C) 2000 SOMELib Project
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Library General Public
** License as published by the Free Software Foundation; either
** version 2 of the License, or (at your option) any later version.
**
** This library is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
** Library General Public License for more details.
**
** You should have received a copy of the GNU Library General Public
** License along with this library; if not, write to the
** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
** Boston, MA  02111-1307, USA.
**
*******************************************************************/

#include "DynLib.h"

using namespace SOME;

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



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

    lib = dlopen(filepath, RTLD_LAZY);
    if (lib == NULL)
    {
        //TODO: Find a better way to display error messages
        //This may get in the way with programs that wish to
        //load full directories
        std::cerr << "Could not find the lib: " << dlerror() << std::endl;
        return valid_lib = false;
    }

    dlerror();
    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 = dlsym(lib, func);
    const char* error;
    error = dlerror();
    if (error)
    {
        std::cerr << "Could not load function: " << func << ". Error message: " << error << std::endl;
        valid_lib = false;
        return 0;
    }
    return func_ptr;
}

void DynLib::unloadLibrary()
{
    if (lib)
    {
        if (dlclose(lib) != 0)
            std::cerr << "Error closing lib: " << dlerror() << std::endl;
    }
    lib = NULL;
    valid_lib = false;
    dlerror();
}

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



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

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