/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 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

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

#ifdef SDL_LOADSO_MACOS

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* System dependent library loading routines                           */

#include <stdio.h>

#include <string.h>

#define OLDP2C 1

#include <Strings.h>

#include <CodeFragments.h>

#include <Errors.h>

#include "SDL_loadso.h"

void *SDL_LoadObject(const char *sofile)

{

	void *handle = NULL;

	const char *loaderror = NULL;

	CFragConnectionID library_id;

	Ptr mainAddr;

	Str255 errName;

	OSErr error;

	char psofile[512];

	SDL_strlcpy(psofile, sofile, SDL_arraysize(psofile));

	error = GetSharedLibrary(C2PStr(psofile), kCompiledCFragArch,

			kLoadCFrag, &library_id, &mainAddr, errName);

	switch (error) {

		case noErr:

			loaderror = NULL;

			break;

		case cfragNoLibraryErr:

			loaderror = "Library not found";

			break;

		case cfragUnresolvedErr:

			loaderror = "Unabled to resolve symbols";

			break;

		case cfragNoPrivateMemErr:

		case cfragNoClientMemErr:

			loaderror = "Out of memory";

			break;

		default:

			loaderror = "Unknown Code Fragment Manager error";

			break;

	}

	if ( loaderror == NULL ) {

		handle = (void *)(library_id);

	} else {

		SDL_SetError("Failed loading %s: %s", sofile, loaderror);

	}

	return(handle);

}

void *SDL_LoadFunction(void *handle, const char *name)

{

	void *symbol = NULL;

	const char *loaderror = NULL;

	CFragSymbolClass class;

	CFragConnectionID library_id = (CFragConnectionID)handle;

	char pname[512];

	SDL_strlcpy(pname, name, SDL_arraysize(pname));

	if ( FindSymbol(library_id, C2PStr(pname),

	                (char **)&symbol, &class) != noErr ) {

		loaderror = "Symbol not found";

	}

	if ( symbol == NULL ) {

		SDL_SetError("Failed loading %s: %s", name, loaderror);

	}

	return(symbol);

}

void SDL_UnloadObject(void *handle)

{

	CFragConnectionID library_id;

	if ( handle != NULL ) {

		library_id = (CFragConnectionID)handle;

		CloseConnection(&library_id);

	}

}

#endif /* SDL_LOADSO_MACOS */