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#ifndef lint
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static const char RCSid[] = "$Id: readobj2.c,v 2.9 2004/03/27 12:41:45 schorsch Exp $";
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#endif
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/*
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* readobj2.c - routines for reading in object descriptions.
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include "platform.h"
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#include "rtprocess.h"
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#include "rtmath.h"
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#include "rtio.h"
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#include "rterror.h"
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#include "object.h"
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#include "otypes.h"
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#include "oconv.h"
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static void getobject2(char *name, FILE *fp, ro_cbfunc f);
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void
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readobj2( /* read in an object file or stream */
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char *input,
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ro_cbfunc callback
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)
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{
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char *fgetline();
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FILE *infp;
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char buf[2048];
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register int c;
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if (input == NULL) {
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infp = stdin;
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input = "standard input";
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} else if (input[0] == '!') {
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if ((infp = popen(input+1, "r")) == NULL) {
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sprintf(errmsg, "cannot execute \"%s\"", input);
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error(SYSTEM, errmsg);
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}
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} else if ((infp = fopen(input, "r")) == NULL) {
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sprintf(errmsg, "cannot open scene file \"%s\"", input);
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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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readobj2(buf, callback);
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} else { /* object */
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ungetc(c, infp);
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getobject2(input, infp, callback);
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}
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}
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if (input[0] == '!')
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pclose(infp);
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else
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fclose(infp);
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}
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static void
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getobject2( /* read the next object */
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char *name,
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FILE *fp,
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ro_cbfunc f
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)
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{
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char sbuf[MAXSTR];
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OBJREC thisobj;
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/* get modifier */
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fgetword(sbuf, MAXSTR, fp);
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thisobj.omod = OVOID;
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/* get type */
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fgetword(sbuf, MAXSTR, fp);
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if ((thisobj.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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fgetword(sbuf, MAXSTR, fp);
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thisobj.oname = sbuf;
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/* get arguments */
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if (thisobj.otype == MOD_ALIAS) {
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fscanf(fp, "%*s");
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return;
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}
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if (readfargs(&thisobj.oargs, fp) <= 0) {
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sprintf(errmsg, "(%s): bad arguments", name);
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objerror(&thisobj, USER, errmsg);
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}
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thisobj.os = NULL;
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/* call function */
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(*f)(&thisobj);
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/* free memory */
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freefargs(&thisobj.oargs);
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free_os(&thisobj);
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}
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