/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
*          Copyright (c) 2020-2021 Contributors to ksh 93u+m           *
*                      and is licensed under the                       *
*                 Eclipse Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*          http://www.eclipse.org/org/documents/epl-v10.html           *
*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
/*
 * Glenn Fowler
 * AT&T Research
 *
 * universe support
 *
 * symbolic link external representation has trailing '\0' and $(...) style
 * conditionals where $(...) corresponds to a kernel object (i.e., probably
 * not environ)
 *
 * universe symlink conditionals use $(UNIVERSE)
 */

#ifndef _UNIVLIB_H
#define _UNIVLIB_H

#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:hide getuniverse readlink setuniverse symlink universe
#else
#define getuniverse	______getuniverse
#define readlink	______readlink
#define setuniverse	______setuniverse
#define symlink		______symlink
#define universe	______universe
#endif

#include <ast.h>
#include <ls.h>
#include <errno.h>

#define UNIV_SIZE	9

#if _cmd_universe && _sys_universe
#include <sys/universe.h>
#endif

#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:nohide getuniverse readlink setuniverse symlink universe
#else
#undef	getuniverse
#undef	readlink
#undef	setuniverse
#undef	symlink
#undef	universe
#endif

#if _cmd_universe
#ifdef NUMUNIV
#define UNIV_MAX	NUMUNIV
#else
#define UNIV_MAX	univ_max
extern char*		univ_name[];
extern int		univ_max;
#endif

extern char		univ_cond[];
extern int		univ_size;

#else

extern char		univ_env[];

#endif

extern int		getuniverse(char*);
extern int		readlink(const char*, char*, int);
extern int		setuniverse(int);
extern int		symlink(const char*, const char*);
extern int		universe(int);

#endif
