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//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright            : (C) 2008 by Eran Ifrah
// file name            : dynamiclibrary.cpp
//
// -------------------------------------------------------------------------
// A
//              _____           _      _     _ _
//             /  __ \         | |    | |   (_) |
//             | /  \/ ___   __| | ___| |    _| |_ ___
//             | |    / _ \ / _  |/ _ \ |   | | __/ _ )
//             | \__/\ (_) | (_| |  __/ |___| | ||  __/
//              \____/\___/ \__,_|\___\_____/_|\__\___|
//
//                                                  F i l e
//
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
 #include "dynamiclibrary.h"

#if defined(__WXMAC__) || defined(__WXGTK__)
# include <dlfcn.h>
# include "precompiled_header.h"
#endif

clDynamicLibrary::clDynamicLibrary()
#if defined(__WXMAC__) || defined(__WXGTK__)
		:
		m_dllhandle(NULL)
#endif
{
}

clDynamicLibrary::~clDynamicLibrary()
{
#if defined(__WXMAC__) || defined(__WXGTK__)
	if(m_dllhandle){
		dlclose(m_dllhandle);
		m_dllhandle = NULL;
	}
#endif
}

bool clDynamicLibrary::Load(const wxString &name)
{
    m_error.Clear();
#if defined (__WXMSW__)
	return m_lib.Load(name, wxDL_NOSHARE);
#else
	// open the library
#if defined(__WXGTK__) && defined (ON_64_BIT)
	// on GTK we need to pass RTLD_DEEPBIND otherwise symbols clashes
	m_dllhandle = dlopen(_C(name), RTLD_LAZY| RTLD_LOCAL | RTLD_DEEPBIND);
#else
	m_dllhandle = dlopen(_C(name), RTLD_LAZY);
#endif

	if (!m_dllhandle) {
		m_error = wxString(dlerror(), wxConvUTF8);
		return false;
	}
	return true;
#endif
}

void clDynamicLibrary::Detach()
{
    m_error.Clear();
#if defined (__WXMSW__)
	m_lib.Detach();
#else
	if (m_dllhandle) {
		dlclose(m_dllhandle);
		m_dllhandle = NULL;
	}
#endif
}

void *clDynamicLibrary::GetSymbol(const wxString &name, bool *success)
{
    m_error.Clear();
#if defined (__WXMSW__)
	bool rc;
	void *symb = m_lib.GetSymbol(name, &rc);
	*success = rc;
	return symb;
#else
	dlerror(); // reset errors

	// load the symbol
	void *symb = dlsym(m_dllhandle, _C(name));
	if(symb){
		*success = true;
	}else{
		*success = false;
        m_error = wxString(dlerror(), wxConvUTF8);
	}
	return symb;
#endif
}