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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* readobj.c - routines for reading in object descriptions. |
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* |
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* External symbols declared in object.h |
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*/ |
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|
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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|
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#include "standard.h" |
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|
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#include "object.h" |
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|
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#include "otypes.h" |
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|
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#include <ctype.h> |
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|
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OBJREC *objblock[MAXOBJBLK]; /* our objects */ |
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OBJECT nobjects = 0; /* # of objects */ |
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|
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|
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void |
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readobj(inpspec) /* read in an object file or stream */ |
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char *inpspec; |
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{ |
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OBJECT lastobj; |
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FILE *infp; |
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char buf[1024]; |
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register int c; |
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|
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lastobj = nobjects; |
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if (inpspec == NULL) { |
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infp = stdin; |
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inpspec = "standard input"; |
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} else if (inpspec[0] == '!') { |
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if ((infp = popen(inpspec+1, "r")) == NULL) { |
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sprintf(errmsg, "cannot execute \"%s\"", inpspec); |
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error(SYSTEM, errmsg); |
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} |
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} else if ((infp = fopen(inpspec, "r")) == NULL) { |
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sprintf(errmsg, "cannot open scene file \"%s\"", inpspec); |
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error(SYSTEM, errmsg); |
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} |
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while ((c = getc(infp)) != EOF) { |
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if (isspace(c)) |
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continue; |
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if (c == '#') { /* comment */ |
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fgets(buf, sizeof(buf), infp); |
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} else if (c == '!') { /* command */ |
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ungetc(c, infp); |
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fgetline(buf, sizeof(buf), infp); |
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readobj(buf); |
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} else { /* object */ |
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ungetc(c, infp); |
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getobject(inpspec, infp); |
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} |
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} |
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if (inpspec[0] == '!') |
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pclose(infp); |
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else |
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fclose(infp); |
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if (nobjects == lastobj) { |
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sprintf(errmsg, "(%s): empty file", inpspec); |
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error(WARNING, errmsg); |
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} |
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} |
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|
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|
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void |
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getobject(name, fp) /* read the next object */ |
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char *name; |
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FILE *fp; |
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{ |
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OBJECT obj; |
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char sbuf[MAXSTR]; |
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int rval; |
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register OBJREC *objp; |
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|
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if ((obj = newobject()) == OVOID) |
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error(SYSTEM, "out of object space"); |
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objp = objptr(obj); |
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/* get modifier */ |
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strcpy(sbuf, "EOF"); |
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fgetword(sbuf, MAXSTR, fp); |
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if (!strcmp(sbuf, VOIDID)) |
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objp->omod = OVOID; |
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else if ((objp->omod = modifier(sbuf)) == OVOID) { |
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sprintf(errmsg, "(%s): undefined modifier \"%s\"", name, sbuf); |
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error(USER, errmsg); |
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} |
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/* get type */ |
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strcpy(sbuf, "EOF"); |
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fgetword(sbuf, MAXSTR, fp); |
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if (!strcmp(sbuf, ALIASID)) |
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objp->otype = -1; |
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else if ((objp->otype = otype(sbuf)) < 0) { |
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sprintf(errmsg, "(%s): unknown type \"%s\"", name, sbuf); |
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error(USER, errmsg); |
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} |
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/* get identifier */ |
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sbuf[0] = '\0'; |
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fgetword(sbuf, MAXSTR, fp); |
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objp->oname = savqstr(sbuf); |
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/* get arguments */ |
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if (objp->otype == -1) { |
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register OBJECT alias; |
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strcpy(sbuf, "EOF"); |
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fgetword(sbuf, MAXSTR, fp); |
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if ((alias = modifier(sbuf)) == OVOID) { |
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sprintf(errmsg, |
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"(%s): bad reference \"%s\" for %s \"%s\"", |
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name, sbuf, ALIASID, objp->oname); |
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error(USER, errmsg); |
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} |
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objp->otype = objptr(alias)->otype; |
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copystruct(&objp->oargs, &objptr(alias)->oargs); |
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} else if ((rval = readfargs(&objp->oargs, fp)) == 0) { |
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sprintf(errmsg, "(%s): bad arguments", name); |
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objerror(objp, USER, errmsg); |
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} else if (rval < 0) { |
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sprintf(errmsg, "(%s): error reading scene", name); |
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error(SYSTEM, errmsg); |
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} |
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/* initialize */ |
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objp->os = NULL; |
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|
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insertobject(obj); /* add to global structure */ |
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} |
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|
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|
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int |
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newobject() /* get a new object */ |
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{ |
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register int i; |
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|
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if ((nobjects & (OBJBLKSIZ-1)) == 0) { /* new block */ |
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errno = 0; |
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i = nobjects >> OBJBLKSHFT; |
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if (i >= MAXOBJBLK) |
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return(OVOID); |
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objblock[i] = (OBJREC *)calloc(OBJBLKSIZ, sizeof(OBJREC)); |
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if (objblock[i] == NULL) |
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return(OVOID); |
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} |
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return(nobjects++); |
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} |
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|
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void |
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freeobjects(firstobj, nobjs) /* free a range of objects */ |
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OBJECT firstobj, nobjs; |
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{ |
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register int obj; |
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/* check bounds */ |
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if (firstobj < 0) |
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return; |
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if (nobjs <= 0) |
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return; |
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if (firstobj + nobjs > nobjects) |
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return; |
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/* clear objects */ |
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for (obj = firstobj+nobjs; obj-- > firstobj; ) { |
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register OBJREC *o = objptr(obj); |
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free_os(o); /* free client memory */ |
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freeqstr(o->oname); |
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freefargs(&o->oargs); |
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bzero(o, sizeof(OBJREC)); |
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} |
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clearobjndx(); |
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/* free objects off end */ |
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for (obj = nobjects; obj-- > 0; ) |
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if (objptr(obj)->oname != NULL) |
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break; |
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++obj; |
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while (nobjects > obj) /* free empty end blocks */ |
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if ((--nobjects & (OBJBLKSIZ-1)) == 0) { |
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int i = nobjects >> OBJBLKSHFT; |
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free((void *)objblock[i]); |
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objblock[i] = NULL; |
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} |
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} |
