#ifndef lint
static const char RCSid[] = "$Id: loadvars.c,v 2.9 2003/02/22 02:07:22 greg Exp $";
#endif
/*
* Routines for loading and checking variables from file.
*/
/* ====================================================================
* 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
* .
*/
#include
#include
#include
#include "vars.h"
#define NOCHAR 127 /* constant for character to delete */
extern char *fgetline();
void
loadvars(rfname) /* load variables into vv from file */
char *rfname;
{
FILE *fp;
char buf[512];
register char *cp;
if (rfname == NULL)
fp = stdin;
else if ((fp = fopen(rfname, "r")) == NULL) {
perror(rfname);
quit(1);
}
while (fgetline(buf, sizeof(buf), fp) != NULL) {
for (cp = buf; *cp; cp++) {
switch (*cp) {
case '\\':
*cp++ = NOCHAR;
continue;
case '#':
*cp = '\0';
break;
default:
continue;
}
break;
}
if (setvariable(buf, matchvar) < 0) {
fprintf(stderr, "%s: unknown variable: %s\n",
rfname, buf);
quit(1);
}
}
fclose(fp);
}
int
setvariable(ass, mv) /* assign variable according to string */
register char *ass;
VARIABLE *(*mv)();
{
char varname[32];
int n;
register char *cp;
register VARIABLE *vp;
register int i;
while (isspace(*ass)) /* skip leading space */
ass++;
cp = varname; /* extract name */
while (cp < varname+sizeof(varname)-1
&& *ass && !isspace(*ass) && *ass != '=')
*cp++ = *ass++;
*cp = '\0';
if (!varname[0])
return(0); /* no variable name! */
/* trim value */
while (isspace(*ass) || *ass == '=')
ass++;
for (n = strlen(ass); n > 0; n--)
if (!isspace(ass[n-1]))
break;
if (!n)
return(0); /* no assignment */
/* match variable from list */
vp = (*mv)(varname);
if (vp == NULL)
return(-1);
/* assign new value */
if (i = vp->nass) {
cp = vp->value;
while (i--)
while (*cp++)
;
i = cp - vp->value;
vp->value = (char *)realloc(vp->value, i+n+1);
} else
vp->value = (char *)malloc(n+1);
if (vp->value == NULL) {
perror(progname);
quit(1);
}
cp = vp->value+i; /* copy value, squeezing spaces */
*cp = *ass;
for (i = 1; i <= n; i++) {
if (ass[i] == NOCHAR)
continue;
if (isspace(*cp))
while (isspace(ass[i]))
i++;
*++cp = ass[i];
}
if (isspace(*cp)) /* remove trailing space */
*cp = '\0';
return(++vp->nass);
}
VARIABLE *
matchvar(nam) /* match a variable by its name */
char *nam;
{
int n = strlen(nam);
register int i;
for (i = 0; i < NVARS; i++)
if (n >= vv[i].nick && !strncmp(nam, vv[i].name, n))
return(vv+i);
return(NULL);
}
char *
nvalue(vn, n) /* return nth variable value */
register int vn;
register int n;
{
register char *cp;
if (vval(vn) == NULL | n < 0 | n >= vdef(vn))
return(NULL);
cp = vval(vn);
while (n--)
while (*cp++)
;
return(cp);
}
void
checkvalues() /* check assignments */
{
register int i;
for (i = 0; i < NVARS; i++)
if (vv[i].fixval != NULL)
(*vv[i].fixval)(vv+i);
}
void
onevalue(vp) /* only one assignment for this variable */
register VARIABLE *vp;
{
if (vp->nass < 2)
return;
if (!nowarn)
fprintf(stderr,
"%s: warning - multiple assignment of variable '%s'\n",
progname, vp->name);
do
vp->value += strlen(vp->value)+1;
while (--vp->nass > 1);
}
void
catvalues(vp) /* concatenate variable values */
register VARIABLE *vp;
{
register char *cp;
if (vp->nass < 2)
return;
for (cp = vp->value; vp->nass > 1; vp->nass--) {
while (*cp)
cp++;
*cp++ = ' ';
}
}
int
badmatch(tv, cv) /* case insensitive truncated comparison */
register char *tv, *cv;
{
if (!*tv) return(1); /* null string cannot match */
do
if (UPPER(*tv) != *cv++)
return(1);
while (*++tv);
return(0); /* OK */
}
void
boolvalue(vp) /* check boolean for legal values */
register VARIABLE *vp;
{
if (!vp->nass) return;
onevalue(vp);
switch (UPPER(vp->value[0])) {
case 'T':
if (badmatch(vp->value, "TRUE")) break;
return;
case 'F':
if (badmatch(vp->value, "FALSE")) break;
return;
}
fprintf(stderr, "%s: illegal value for boolean variable '%s'\n",
progname, vp->name);
quit(1);
}
void
qualvalue(vp) /* check qualitative var. for legal values */
register VARIABLE *vp;
{
if (!vp->nass) return;
onevalue(vp);
switch (UPPER(vp->value[0])) {
case 'L':
if (badmatch(vp->value, "LOW")) break;
return;
case 'M':
if (badmatch(vp->value, "MEDIUM")) break;
return;
case 'H':
if (badmatch(vp->value, "HIGH")) break;
return;
}
fprintf(stderr, "%s: illegal value for qualitative variable '%s'\n",
progname, vp->name);
quit(1);
}
void
intvalue(vp) /* check integer variable for legal values */
register VARIABLE *vp;
{
if (!vp->nass) return;
onevalue(vp);
if (isint(vp->value)) return;
fprintf(stderr, "%s: illegal value for integer variable '%s'\n",
progname, vp->name);
quit(1);
}
void
fltvalue(vp) /* check float variable for legal values */
register VARIABLE *vp;
{
if (!vp->nass) return;
onevalue(vp);
if (isflt(vp->value)) return;
fprintf(stderr, "%s: illegal value for real variable '%s'\n",
progname, vp->name);
quit(1);
}
void
printvars(fp) /* print variable values */
register FILE *fp;
{
int i, j, k, clipline;
register char *cp;
for (i = 0; i < NVARS; i++) /* print each variable */
for (j = 0; j < vdef(i); j++) { /* print each assignment */
fputs(vnam(i), fp);
fputs("= ", fp);
k = clipline = ( vv[i].fixval == catvalues ? 64 : 236 )
- strlen(vnam(i)) ;
cp = nvalue(i, j);
while (*cp) {
putc(*cp++, fp);
if (--k <= 0) { /* line too long */
while (*cp && !isspace(*cp))
fputc(*cp++, fp); /* finish this word */
if (*cp) { /* start new line */
if (vv[i].fixval == catvalues) {
fputc('\n', fp);
fputs(vnam(i), fp);
fputc('=', fp);
} else
fputs(" \\\n", fp);
k = clipline;
}
}
}
fputc('\n', fp);
}
fflush(fp);
}