/* RCSid: $Id: vars.h,v 2.3 2003/02/22 02:07:22 greg Exp $ */
/*
 *  Header for programs that load variable files.
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *         notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact radiance@radsite.lbl.gov.
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

typedef struct {
	char	*name;		/* variable name */
	short	nick;		/* # characters required for nickname */
	short	nass;		/* # assignments made */
	char	*value;		/* assigned value(s) */
	void	(*fixval)();	/* assignment checking function */
} VARIABLE;		/* a variable-value pair */

/**** The following variables should be declared by calling program ****/

extern int	NVARS;		/* total number of variables */

extern VARIABLE	vv[];		/* variable-value pairs */

extern char	*progname;	/* global argv[0] from main */

extern int	nowarn;		/* global boolean to turn warnings off */

/**** The rest is declared in loadvars.c ****/

extern VARIABLE	*matchvar();
extern char	*nvalue();

#define UPPER(c)	((c)&~0x20)	/* ASCII trick */

#define vnam(vc)	(vv[vc].name)
#define vdef(vc)	(vv[vc].nass)
#define vval(vc)	(vv[vc].value)
#define vint(vc)	atoi(vval(vc))
#define vflt(vc)	atof(vval(vc))
#define vlet(vc)	UPPER(vval(vc)[0])
#define vscale		vlet
#define vbool(vc)	(vlet(vc)=='T')

#define HIGH		'H'
#define MEDIUM		'M'
#define LOW		'L'

#ifdef NOPROTO

extern void	loadvars();
extern int	setvariable();
extern VARIABLE	*matchvar();
extern char	*nvalue();
extern void	checkvalues();
extern void	onevalue();
extern void	catvalues();
extern int	badmatch();
extern void	boolvalue();
extern void	qualvalue();
extern void	intvalue();
extern void	fltvalue();
extern void	printvars();

#else

extern void	loadvars(char *rfname);
extern int	setvariable(char *ass, VARIABLE *(*mv)());
extern VARIABLE	*matchvar(char *nam);
extern char	*nvalue(int vn, int n);
extern void	checkvalues(void);
extern void	onevalue(VARIABLE *vp);
extern void	catvalues(VARIABLE *vp);
extern int	badmatch(char *tv, char *cv);
extern void	boolvalue(VARIABLE *vp);
extern void	qualvalue(VARIABLE *vp);
extern void	intvalue(VARIABLE *vp);
extern void	fltvalue(VARIABLE *vp);
extern void	printvars(FILE *fp);

#endif