/*
 *  libfb - FreeBASIC's runtime library
 *	Copyright (C) 2004-2010 The FreeBASIC development team.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  As a special exception, the copyright holders of this library give
 *  you permission to link this library with independent modules to
 *  produce an executable, regardless of the license terms of these
 *  independent modules, and to copy and distribute the resulting
 *  executable under terms of your choice, provided that you also meet,
 *  for each linked independent module, the terms and conditions of the
 *  license of that module. An independent module is a module which is
 *  not derived from or based on this library. If you modify this library,
 *  you may extend this exception to your version of the library, but
 *  you are not obligated to do so. If you do not wish to do so, delete
 *  this exception statement from your version.
 */

/*
 * sys_dylib.c -- Dynamic library loading and symbols retrieving
 *
 * chng: feb/2005 written [lillo]
 * 		 jan/2007 fb_DylibSymbolByOrd [voodooattack] 
 */

#include "fb.h"


/*:::::*/
FBCALL void *fb_DylibLoad( FBSTRING *library )
{
	void *res = NULL;
	int i;
	char libname[MAX_PATH];
	char *libnameformat[] = { "%s",
							  "lib%s",
							  "lib%s.so",
							  "./%s",
							  "./lib%s",
							  "./lib%s.so",
							  NULL };

	libname[MAX_PATH-1] = '\0';
	if( (library) && (library->data) ) {
		for( i = 0; libnameformat[i]; i++ ) {
			snprintf( libname, MAX_PATH-1, libnameformat[i], library->data );
			fb_hConvertPath( libname, MAX_PATH-1 );
			res = dlopen( libname, RTLD_LAZY );
			if( res )
				break;
		}
	}

	/* del if temp */
	fb_hStrDelTemp( library );

	return res;
}

/*:::::*/
FBCALL void *fb_DylibSymbol( void *library, FBSTRING *symbol )
{
	void *proc = NULL;

	if( library == NULL )
		library = dlopen( NULL, RTLD_LAZY );

	if( (symbol) && (symbol->data) )
		proc = dlsym( library, symbol->data );

	/* del if temp */
	fb_hStrDelTemp( symbol );

	return proc;
}

/*:::::*/
FBCALL void *fb_DylibSymbolByOrd ( void *library, short int symbol )
{
	/* 
		!!!WRITEME!!!
		NOT APPLICABLE TO LINUX 
			--  THE COMPILER SHOULD WARN ABOUT IT 
	*/
	
	return (void *)0;
}

/*:::::*/
FBCALL void fb_DylibFree( void *library )
{
	dlclose( library );
}
