| 1 |
greg |
1.1 |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
|
|
|
| 3 |
|
|
#ifndef lint |
| 4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
|
|
#endif |
| 6 |
|
|
|
| 7 |
|
|
/* |
| 8 |
|
|
* readobj2.c - routines for reading in object descriptions. |
| 9 |
|
|
*/ |
| 10 |
|
|
|
| 11 |
|
|
#include "standard.h" |
| 12 |
|
|
|
| 13 |
|
|
#include "object.h" |
| 14 |
|
|
|
| 15 |
|
|
#include "otypes.h" |
| 16 |
|
|
|
| 17 |
|
|
#include <ctype.h> |
| 18 |
|
|
|
| 19 |
greg |
1.5 |
extern char *fgetword(); |
| 20 |
|
|
|
| 21 |
greg |
1.1 |
OBJREC *objblock[MAXOBJBLK]; /* our objects */ |
| 22 |
|
|
OBJECT nobjects = 0; /* # of objects */ |
| 23 |
|
|
int newobject() {return(0);} |
| 24 |
|
|
|
| 25 |
|
|
|
| 26 |
|
|
readobj(input, callback) /* read in an object file or stream */ |
| 27 |
|
|
char *input; |
| 28 |
|
|
int (*callback)(); |
| 29 |
|
|
{ |
| 30 |
|
|
FILE *popen(); |
| 31 |
|
|
char *fgets(), *fgetline(); |
| 32 |
|
|
FILE *infp; |
| 33 |
|
|
char buf[512]; |
| 34 |
|
|
register int c; |
| 35 |
|
|
|
| 36 |
|
|
if (input == NULL) { |
| 37 |
|
|
infp = stdin; |
| 38 |
|
|
input = "standard input"; |
| 39 |
|
|
} else if (input[0] == '!') { |
| 40 |
|
|
if ((infp = popen(input+1, "r")) == NULL) { |
| 41 |
|
|
sprintf(errmsg, "cannot execute \"%s\"", input); |
| 42 |
|
|
error(SYSTEM, errmsg); |
| 43 |
|
|
} |
| 44 |
|
|
} else if ((infp = fopen(input, "r")) == NULL) { |
| 45 |
|
|
sprintf(errmsg, "cannot open scene file \"%s\"", input); |
| 46 |
|
|
error(SYSTEM, errmsg); |
| 47 |
|
|
} |
| 48 |
|
|
while ((c = getc(infp)) != EOF) { |
| 49 |
|
|
if (isspace(c)) |
| 50 |
|
|
continue; |
| 51 |
|
|
if (c == '#') { /* comment */ |
| 52 |
|
|
fgets(buf, sizeof(buf), infp); |
| 53 |
|
|
} else if (c == '!') { /* command */ |
| 54 |
|
|
ungetc(c, infp); |
| 55 |
|
|
fgetline(buf, sizeof(buf), infp); |
| 56 |
greg |
1.2 |
readobj(buf, callback); |
| 57 |
greg |
1.1 |
} else { /* object */ |
| 58 |
|
|
ungetc(c, infp); |
| 59 |
|
|
getobject(input, infp, callback); |
| 60 |
|
|
} |
| 61 |
|
|
} |
| 62 |
|
|
if (input[0] == '!') |
| 63 |
|
|
pclose(infp); |
| 64 |
|
|
else |
| 65 |
|
|
fclose(infp); |
| 66 |
|
|
} |
| 67 |
|
|
|
| 68 |
|
|
|
| 69 |
|
|
getobject(name, fp, f) /* read the next object */ |
| 70 |
|
|
char *name; |
| 71 |
|
|
FILE *fp; |
| 72 |
|
|
int (*f)(); |
| 73 |
|
|
{ |
| 74 |
|
|
char sbuf[MAXSTR]; |
| 75 |
|
|
OBJREC thisobj; |
| 76 |
|
|
/* get modifier */ |
| 77 |
greg |
1.5 |
fgetword(sbuf, MAXSTR, fp); |
| 78 |
greg |
1.2 |
thisobj.omod = OVOID; |
| 79 |
greg |
1.1 |
/* get type */ |
| 80 |
greg |
1.5 |
fgetword(sbuf, MAXSTR, fp); |
| 81 |
greg |
1.1 |
if (!strcmp(sbuf, ALIASID)) |
| 82 |
|
|
thisobj.otype = -1; |
| 83 |
|
|
else if ((thisobj.otype = otype(sbuf)) < 0) { |
| 84 |
|
|
sprintf(errmsg, "(%s): unknown type \"%s\"", name, sbuf); |
| 85 |
|
|
error(USER, errmsg); |
| 86 |
|
|
} |
| 87 |
|
|
/* get identifier */ |
| 88 |
greg |
1.5 |
fgetword(sbuf, MAXSTR, fp); |
| 89 |
greg |
1.1 |
thisobj.oname = sbuf; |
| 90 |
|
|
/* get arguments */ |
| 91 |
|
|
if (thisobj.otype == -1) { |
| 92 |
|
|
fscanf(fp, "%*s"); |
| 93 |
|
|
return; |
| 94 |
|
|
} |
| 95 |
greg |
1.4 |
if (readfargs(&thisobj.oargs, fp) <= 0) { |
| 96 |
greg |
1.1 |
sprintf(errmsg, "(%s): bad arguments", name); |
| 97 |
|
|
objerror(&thisobj, USER, errmsg); |
| 98 |
|
|
} |
| 99 |
|
|
thisobj.os = NULL; |
| 100 |
|
|
thisobj.lastrno = -1; |
| 101 |
|
|
/* call function */ |
| 102 |
|
|
(*f)(&thisobj); |
| 103 |
|
|
/* free memory */ |
| 104 |
|
|
if (thisobj.os != NULL) |
| 105 |
|
|
switch (thisobj.otype) { |
| 106 |
|
|
case OBJ_CONE: |
| 107 |
|
|
case OBJ_CUP: |
| 108 |
|
|
case OBJ_CYLINDER: |
| 109 |
|
|
case OBJ_TUBE: |
| 110 |
|
|
case OBJ_RING: |
| 111 |
|
|
freecone(&thisobj); |
| 112 |
|
|
break; |
| 113 |
|
|
case OBJ_FACE: |
| 114 |
|
|
freeface(&thisobj); |
| 115 |
|
|
break; |
| 116 |
|
|
case OBJ_INSTANCE: |
| 117 |
|
|
freeinstance(&thisobj); |
| 118 |
|
|
break; |
| 119 |
|
|
} |
| 120 |
|
|
freefargs(&thisobj.oargs); |
| 121 |
|
|
} |
