/*
** getXXbyYY.h     Function definition file for getXXbyYY() type calls
**
** Copyright (c) 1993 Signum Support AB, Sweden
**
** This file is part of the NYS Library.
**
** The NYS 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.
**
** The NYS 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 the NYS Library; see the file COPYING.LIB.  If
** not, write to the Free Software Foundation, Inc., 675 Mass Ave,
** Cambridge, MA 02139, USA.
**
** Macros that should be defined before including this file:
**
**    RETOBJTYPE
**    REQOBJTYPE
**    FUNCNAME
**    NSWENTRY
**
**    NSWPREFIX
**    STDPREFIX
**
**    CONCAT(a,b)
*/

RETOBJTYPE CONCAT(NSWPREFIX,FUNCNAME)
    (REQOBJTYPE rqobj
#ifdef REQOBJTYPE2
     , REQOBJTYPE2 rqobj2
#endif
#ifdef REQOBJTYPE3
     , REQOBJTYPE3 rqobj3
#endif
     )
{
    RETOBJTYPE robj = NULL;
    int i;
    static int CONCAT(recur_,FUNCNAME) = 0;

    
    if (nswp == NULL)
    {
	nswp = getnswbyname(NSWENTRY);
	setptr = 0;
    }

    /* We are already executing in this function, or no /etc/nsswitch.conf */
    if (CONCAT(recur_,FUNCNAME) == 1 || nswp == NULL)
	return CONCAT(STDPREFIX,FUNCNAME)
	    (rqobj
#ifdef REQOBJTYPE2
	     , rqobj2
#endif
#ifdef REQOBJTYPE3
	     , rqobj3
#endif
	     );
    
    CONCAT(recur_,FUNCNAME) = 1;
    
    errno = 0;
    for (i = 0; i < nswp->orderc && robj == NULL; i++)
	switch (nswp->orderl[i])
	{
	  case NSWO_RETURN:
	    if (errno == 0)
	    {
		CONCAT(recur_,FUNCNAME) = 0;
		return NULL;
	    }
	    break;
	    
	  case NSWO_FILES:
	    robj = CONCAT(STDPREFIX,FUNCNAME)
		(rqobj
#ifdef REQOBJTYPE2
		 , rqobj2
#endif
#ifdef REQOBJTYPE3
		 , rqobj3
#endif
		 );
	    break;
	    
#ifdef ENABLE_NIS
	  case NSWO_NISPLUS:
	    robj = CONCAT(_nis_,FUNCNAME)
		(rqobj
#ifdef REQOBJTYPE2
		 , rqobj2
#endif
#ifdef REQOBJTYPE3
		 , rqobj3
#endif
		 );
	    break;
#endif
#ifdef ENABLE_YP
	  case NSWO_NIS:
	    robj = CONCAT(_yp_,FUNCNAME)
		(rqobj
#ifdef REQOBJTYPE2
		 , rqobj2
#endif
#ifdef REQOBJTYPE3
		 , rqobj3
#endif
		 );		 
	    break;
#endif
#ifdef ENABLE_DNS
	  case NSWO_DNS:
	    robj = CONCAT(_dns_,FUNCNAME)
		(rqobj
#ifdef REQOBJTYPE2
		 , rqobj2
#endif
#ifdef REQOBJTYPE3
		 , rqobj3
#endif
		 );
	    break;
#endif
#ifdef ENABLE_DBM
	  case NSWO_DBM:
	    robj = CONCAT(_dbm_,FUNCNAME)
		(rqobj
#ifdef REQOBJTYPE2
		 , rqobj2
#endif
#ifdef REQOBJTYPE3
		 , rqobj3
#endif
		 );
	    break;
#endif
	}
    
    CONCAT(recur_,FUNCNAME) = 0;
    
    return robj;
}