1 |
< |
/* Copyright (c) 1990 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1996 Regents of the University of California */ |
2 |
|
|
3 |
|
#ifndef lint |
4 |
|
static char SCCSid[] = "$SunId$ LBL"; |
14 |
|
|
15 |
|
#include "standard.h" |
16 |
|
|
17 |
+ |
#include "paths.h" |
18 |
+ |
|
19 |
|
#include <ctype.h> |
20 |
|
|
21 |
+ |
#include "object.h" |
22 |
+ |
|
23 |
|
#include "otypes.h" |
24 |
|
|
25 |
|
int xac; /* global xform argument count */ |
27 |
|
int xfa; /* start of xf arguments */ |
28 |
|
|
29 |
|
XF tot; /* total transformation */ |
30 |
< |
int reverse; /* boolean true if scene inverted */ |
30 |
> |
int reverse; /* boolean true if scene mirrored */ |
31 |
|
|
32 |
< |
int expand = 0; /* boolean true to expand commands */ |
32 |
> |
int invert = 0; /* boolean true to invert surfaces */ |
33 |
|
|
34 |
+ |
int expand = 1; /* boolean true to expand commands */ |
35 |
+ |
|
36 |
+ |
char *newmod = NULL; /* new modifier for surfaces */ |
37 |
+ |
|
38 |
|
char *idprefix = NULL; /* prefix for object identifiers */ |
39 |
|
|
40 |
< |
#define ALIAS NUMOTYPE /* put alias at end of array */ |
40 |
> |
#define ALIAS NUMOTYPE /* put alias at end of array */ |
41 |
|
|
42 |
< |
#define NUMTYPES (NUMOTYPE+1) /* total number of object types */ |
42 |
> |
#define NUMTYPES (NUMOTYPE+1) /* total number of object types */ |
43 |
|
|
44 |
|
FUN ofun[NUMTYPES] = INIT_OTYPE; /* default types and actions */ |
45 |
|
|
46 |
< |
typedef struct { |
39 |
< |
short nsargs; /* # of string arguments */ |
40 |
< |
char **sarg; /* string arguments */ |
41 |
< |
short niargs; /* # of integer arguments */ |
42 |
< |
int *iarg; /* integer arguments */ |
43 |
< |
short nfargs; /* # of float arguments */ |
44 |
< |
double *farg; /* float arguments */ |
45 |
< |
} FUNARGS; |
46 |
> |
short tinvers[NUMOTYPE]; /* inverse types for surfaces */ |
47 |
|
|
48 |
< |
#define MAXSTR 512 /* maximum string length */ |
48 |
> |
int nrept = 1; /* number of array repetitions */ |
49 |
|
|
50 |
< |
FUNARGS *getfargs(); |
50 |
< |
char *malloc(); |
50 |
> |
extern char *malloc(), *fgetword(); |
51 |
|
|
52 |
< |
#define progname (xav[0]) |
52 |
> |
char *mainfn[MAXPATH]; /* main file name */ |
53 |
> |
FILE *mainfp = NULL; /* main file pointer */ |
54 |
|
|
55 |
+ |
#define progname (xav[0]) |
56 |
|
|
57 |
+ |
|
58 |
|
main(argc, argv) /* get transform options and transform file */ |
59 |
|
int argc; |
60 |
|
char *argv[]; |
61 |
|
{ |
62 |
< |
FILE *fopen(); |
60 |
< |
FILE *fp; |
62 |
> |
char *fname; |
63 |
|
int a; |
64 |
|
/* check for array */ |
65 |
|
for (a = 1; a < argc; a++) |
71 |
|
for (a = 1; a < argc; a++) { |
72 |
|
if (argv[a][0] == '-') |
73 |
|
switch (argv[a][1]) { |
74 |
+ |
case 'm': |
75 |
+ |
if (argv[a][2] || a+1 >= argc) |
76 |
+ |
break; |
77 |
+ |
newmod = argv[++a]; |
78 |
+ |
continue; |
79 |
|
case 'n': |
80 |
|
if (argv[a][2] || a+1 >= argc) |
81 |
|
break; |
82 |
|
idprefix = argv[++a]; |
83 |
|
continue; |
84 |
+ |
case 'c': |
85 |
+ |
if (argv[a][2]) |
86 |
+ |
break; |
87 |
+ |
expand = 0; |
88 |
+ |
continue; |
89 |
|
case 'e': |
90 |
|
if (argv[a][2]) |
91 |
|
break; |
92 |
|
expand = 1; |
93 |
|
continue; |
94 |
+ |
case 'I': |
95 |
+ |
if (argv[a][2]) |
96 |
+ |
break; |
97 |
+ |
invert = 1; |
98 |
+ |
continue; |
99 |
|
} |
100 |
|
break; |
101 |
|
} |
107 |
|
|
108 |
|
if (reverse = tot.sca < 0.0) |
109 |
|
tot.sca = -tot.sca; |
110 |
+ |
if (invert) |
111 |
+ |
reverse = !reverse; |
112 |
|
|
113 |
|
if (a < argc && argv[a][0] == '-') { |
114 |
|
fprintf(stderr, "%s: command line error at '%s'\n", |
123 |
|
printf(" %s", xav[a]); |
124 |
|
putchar('\n'); |
125 |
|
/* transform input */ |
126 |
< |
if (xac == argc) |
127 |
< |
xform("standard input", stdin); |
128 |
< |
else |
126 |
> |
if (xac == argc) { |
127 |
> |
openmain(NULL); |
128 |
> |
xform(mainfn, mainfp); |
129 |
> |
} else |
130 |
|
for (a = xac; a < argc; a++) { |
131 |
< |
if ((fp = fopen(argv[a], "r")) == NULL) { |
132 |
< |
fprintf(stderr, "%s: cannot open \"%s\"\n", |
113 |
< |
progname, argv[a]); |
114 |
< |
exit(1); |
115 |
< |
} |
116 |
< |
xform(argv[a], fp); |
117 |
< |
fclose(fp); |
131 |
> |
openmain(argv[a]); |
132 |
> |
xform(mainfn, mainfp); |
133 |
|
} |
134 |
|
|
135 |
|
return(0); |
143 |
|
char *newav[256], **avp; |
144 |
|
char newid[128], repts[32]; |
145 |
|
char *oldid = NULL; |
146 |
< |
int i, err; |
146 |
> |
int n, i, err; |
147 |
|
|
148 |
|
avp = newav+2; |
149 |
|
avp[0] = av[0]; |
163 |
|
avp = newav; |
164 |
|
ac += 2; |
165 |
|
} |
166 |
+ |
nrept *= n = atoi(av[ai+1]); |
167 |
|
err = 0; |
168 |
< |
for (i = 0; i < atoi(av[ai+1]); i++) { |
168 |
> |
for (i = 0; i < n; i++) { |
169 |
|
if (oldid == NULL) |
170 |
|
sprintf(newid, "a%d", i); |
171 |
|
else |
181 |
|
char *name; |
182 |
|
register FILE *fin; |
183 |
|
{ |
184 |
+ |
int nobjs = 0; |
185 |
|
register int c; |
186 |
|
|
187 |
|
while ((c = getc(fin)) != EOF) { |
197 |
|
} else if (c == '!') { /* command */ |
198 |
|
ungetc(c, fin); |
199 |
|
xfcomm(name, fin); |
200 |
+ |
nobjs++; |
201 |
|
} else { /* object */ |
202 |
|
ungetc(c, fin); |
203 |
|
xfobject(name, fin); |
204 |
+ |
nobjs++; |
205 |
|
} |
206 |
|
} |
207 |
+ |
if (nobjs == 0) |
208 |
+ |
fprintf(stderr, "%s: (%s): warning - empty file\n", |
209 |
+ |
progname, name); |
210 |
|
} |
211 |
|
|
212 |
|
|
213 |
|
xfcomm(fname, fin) /* transform a command */ |
214 |
+ |
char *fname; |
215 |
|
FILE *fin; |
216 |
|
{ |
217 |
< |
FILE *popen(); |
218 |
< |
char *fgetline(); |
217 |
> |
extern FILE *popen(); |
218 |
> |
extern char *fgetline(); |
219 |
|
FILE *pin; |
220 |
|
char buf[512]; |
221 |
|
int i; |
222 |
|
|
223 |
|
fgetline(buf, sizeof(buf), fin); |
224 |
|
if (expand) { |
225 |
< |
if (xac > 2) { |
226 |
< |
if ((pin = popen(buf+1, "r")) == NULL) { |
227 |
< |
fprintf(stderr, |
228 |
< |
"%s: (%s): cannot execute \"%s\"\n", |
206 |
< |
progname, fname, buf); |
207 |
< |
exit(1); |
208 |
< |
} |
209 |
< |
xform(buf, pin); |
210 |
< |
pclose(pin); |
211 |
< |
} else { |
212 |
< |
fflush(stdout); |
213 |
< |
system(buf+1); |
225 |
> |
if ((pin = popen(buf+1, "r")) == NULL) { |
226 |
> |
fprintf(stderr, "%s: (%s): cannot execute \"%s\"\n", |
227 |
> |
progname, fname, buf); |
228 |
> |
exit(1); |
229 |
|
} |
230 |
+ |
xform(buf, pin); |
231 |
+ |
pclose(pin); |
232 |
|
} else { |
233 |
|
printf("\n%s", buf); |
234 |
|
if (xac > 1) { |
235 |
< |
printf(" | %s -e", xav[0]); |
235 |
> |
printf(" | %s", xav[0]); |
236 |
|
for (i = 1; i < xac; i++) |
237 |
|
printf(" %s", xav[i]); |
238 |
|
} |
245 |
|
char *fname; |
246 |
|
FILE *fin; |
247 |
|
{ |
248 |
< |
char stmp[MAXSTR]; |
248 |
> |
extern char *strcpy(); |
249 |
> |
char typ[16], nam[MAXSTR]; |
250 |
|
int fn; |
251 |
< |
|
252 |
< |
fscanf(fin, "%s", stmp); /* modifier */ |
253 |
< |
printf("\n%s ", stmp); |
254 |
< |
fscanf(fin, "%s", stmp); /* object type */ |
255 |
< |
if ((fn = otype(stmp)) < 0) { |
251 |
> |
/* modifier and type */ |
252 |
> |
strcpy(typ, "EOF"); |
253 |
> |
fgetword(nam, sizeof(nam), fin); |
254 |
> |
fgetword(typ, sizeof(typ), fin); |
255 |
> |
if ((fn = otype(typ)) < 0) { |
256 |
|
fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n", |
257 |
< |
progname, fname, stmp); |
257 |
> |
progname, fname, typ); |
258 |
|
exit(1); |
259 |
|
} |
260 |
< |
printf("%s ", stmp); |
261 |
< |
fscanf(fin, "%s", stmp); /* object name */ |
244 |
< |
if (idprefix != NULL && issurface(fn)) |
245 |
< |
printf("%s.%s\n", idprefix, stmp); |
260 |
> |
if (ismodifier(fn)) |
261 |
> |
printf("\n%s %s ", nam, typ); |
262 |
|
else |
263 |
< |
printf("%s\n", stmp); |
264 |
< |
/* transform arguments */ |
263 |
> |
printf("\n%s %s ", newmod != NULL ? newmod : nam, |
264 |
> |
invert ? ofun[tinvers[fn]].funame : typ); |
265 |
> |
/* object name */ |
266 |
> |
fgetword(nam, sizeof(nam), fin); |
267 |
> |
if (idprefix == NULL || ismodifier(fn)) |
268 |
> |
printf("%s\n", nam); |
269 |
> |
else |
270 |
> |
printf("%s.%s\n", idprefix, nam); |
271 |
> |
/* transform arguments */ |
272 |
|
if ((*ofun[fn].funp)(fin) < 0) { |
273 |
|
fprintf(stderr, "%s: (%s): bad %s \"%s\"\n", |
274 |
< |
progname, fname, ofun[fn].funame, stmp); |
274 |
> |
progname, fname, ofun[fn].funame, nam); |
275 |
|
exit(1); |
276 |
|
} |
277 |
|
} |
281 |
|
FILE *fin; |
282 |
|
{ |
283 |
|
register int i; |
284 |
< |
register FUNARGS *fa; |
284 |
> |
FUNARGS fa; |
285 |
|
|
286 |
< |
if ((fa = getfargs(fin)) == NULL) |
286 |
> |
if (readfargs(&fa, fin) != 1) |
287 |
|
return(-1); |
288 |
|
/* string arguments */ |
289 |
< |
printf("%d", fa->nsargs); |
290 |
< |
for (i = 0; i < fa->nsargs; i++) |
291 |
< |
printf(" %s", fa->sarg[i]); |
289 |
> |
printf("%d", fa.nsargs); |
290 |
> |
for (i = 0; i < fa.nsargs; i++) |
291 |
> |
printf(" %s", fa.sarg[i]); |
292 |
|
printf("\n"); |
293 |
+ |
#ifdef IARGS |
294 |
|
/* integer arguments */ |
295 |
< |
printf("%d", fa->niargs); |
296 |
< |
for (i = 0; i < fa->niargs; i++) |
297 |
< |
printf(" %d", fa->iarg[i]); |
295 |
> |
printf("%d", fa.niargs); |
296 |
> |
for (i = 0; i < fa.niargs; i++) |
297 |
> |
printf(" %d", fa.iarg[i]); |
298 |
|
printf("\n"); |
299 |
+ |
#else |
300 |
+ |
printf("0\n"); |
301 |
+ |
#endif |
302 |
|
/* float arguments */ |
303 |
< |
printf("%d", fa->nfargs); |
304 |
< |
for (i = 0; i < fa->nfargs; i++) |
305 |
< |
printf(" %18.12g", fa->farg[i]); |
303 |
> |
printf("%d", fa.nfargs); |
304 |
> |
for (i = 0; i < fa.nfargs; i++) |
305 |
> |
printf(" %18.12g", fa.farg[i]); |
306 |
|
printf("\n"); |
307 |
< |
freefargs(fa); |
307 |
> |
freefargs(&fa); |
308 |
|
return(0); |
309 |
|
} |
310 |
|
|
313 |
|
FILE *fin; |
314 |
|
{ |
315 |
|
register int i; |
316 |
< |
register FUNARGS *fa; |
316 |
> |
int resetarr = 0; |
317 |
> |
FUNARGS fa; |
318 |
|
|
319 |
< |
if ((fa = getfargs(fin)) == NULL) |
319 |
> |
if (readfargs(&fa, fin) != 1) |
320 |
|
return(-1); |
321 |
|
/* string arguments */ |
322 |
< |
printf("%d", fa->nsargs + xac-xfa); |
323 |
< |
for (i = 0; i < fa->nsargs; i++) |
324 |
< |
printf(" %s", fa->sarg[i]); |
322 |
> |
if (xac > xfa && strcmp(xav[xfa], "-i")) |
323 |
> |
resetarr = 2; |
324 |
> |
printf("%d", fa.nsargs + resetarr + xac-xfa); |
325 |
> |
for (i = 0; i < fa.nsargs; i++) |
326 |
> |
printf(" %s", fa.sarg[i]); |
327 |
> |
if (resetarr) |
328 |
> |
printf(" -i 1"); |
329 |
|
for (i = xfa; i < xac; i++) /* add xf arguments */ |
330 |
|
printf(" %s", xav[i]); |
331 |
|
printf("\n"); |
332 |
+ |
#ifdef IARGS |
333 |
|
/* integer arguments */ |
334 |
< |
printf("%d", fa->niargs); |
335 |
< |
for (i = 0; i < fa->niargs; i++) |
336 |
< |
printf(" %d", fa->iarg[i]); |
334 |
> |
printf("%d", fa.niargs); |
335 |
> |
for (i = 0; i < fa.niargs; i++) |
336 |
> |
printf(" %d", fa.iarg[i]); |
337 |
|
printf("\n"); |
338 |
+ |
#else |
339 |
+ |
printf("0\n"); |
340 |
+ |
#endif |
341 |
|
/* float arguments */ |
342 |
< |
printf("%d", fa->nfargs); |
343 |
< |
for (i = 0; i < fa->nfargs; i++) |
344 |
< |
printf(" %18.12g", fa->farg[i]); |
342 |
> |
printf("%d", fa.nfargs); |
343 |
> |
for (i = 0; i < fa.nfargs; i++) |
344 |
> |
printf(" %18.12g", fa.farg[i]); |
345 |
|
printf("\n"); |
346 |
< |
freefargs(fa); |
346 |
> |
freefargs(&fa); |
347 |
|
return(0); |
348 |
|
} |
349 |
|
|
367 |
|
{ |
368 |
|
char aliasnm[MAXSTR]; |
369 |
|
|
370 |
< |
if (fscanf(fin, "%s", aliasnm) != 1) |
370 |
> |
if (fgetword(aliasnm, MAXSTR, fin) == NULL) |
371 |
|
return(-1); |
372 |
|
printf("\t%s\n", aliasnm); |
373 |
|
return(0); |
377 |
|
m_glow(fin) /* transform arguments for proximity light */ |
378 |
|
FILE *fin; |
379 |
|
{ |
380 |
< |
register FUNARGS *fa; |
380 |
> |
FUNARGS fa; |
381 |
|
|
382 |
< |
if ((fa = getfargs(fin)) == NULL) |
382 |
> |
if (readfargs(&fa, fin) != 1) |
383 |
|
return(-1); |
384 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
384 |
> |
if (fa.nsargs != 0 || fa.nfargs != 4) |
385 |
|
return(-1); |
386 |
|
printf("0\n0\n4"); |
387 |
|
printf(" %18.12g %18.12g %18.12g", |
388 |
< |
fa->farg[0], fa->farg[1], fa->farg[2]); |
389 |
< |
printf(" %18.12g\n", fa->farg[3] * tot.sca); |
390 |
< |
freefargs(fa); |
388 |
> |
fa.farg[0], fa.farg[1], fa.farg[2]); |
389 |
> |
printf(" %18.12g\n", fa.farg[3] * tot.sca); |
390 |
> |
freefargs(&fa); |
391 |
|
return(0); |
392 |
|
} |
393 |
|
|
395 |
|
m_spot(fin) /* transform arguments for spotlight */ |
396 |
|
FILE *fin; |
397 |
|
{ |
398 |
< |
double v[3]; |
399 |
< |
register FUNARGS *fa; |
398 |
> |
FVECT v; |
399 |
> |
FUNARGS fa; |
400 |
|
|
401 |
< |
if ((fa = getfargs(fin)) == NULL) |
401 |
> |
if (readfargs(&fa, fin) != 1) |
402 |
|
return(-1); |
403 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 7) |
403 |
> |
if (fa.nsargs != 0 || fa.nfargs != 7) |
404 |
|
return(-1); |
405 |
|
printf("0\n0\n7"); |
406 |
|
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
407 |
< |
fa->farg[0], fa->farg[1], fa->farg[2], fa->farg[3]); |
408 |
< |
multv3(v, fa->farg+4, tot.xfm); |
407 |
> |
fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]); |
408 |
> |
multv3(v, fa.farg+4, tot.xfm); |
409 |
|
printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
410 |
< |
freefargs(fa); |
410 |
> |
freefargs(&fa); |
411 |
|
return(0); |
412 |
|
} |
413 |
|
|
414 |
|
|
415 |
+ |
m_mist(fin) /* transform arguments for mist */ |
416 |
+ |
FILE *fin; |
417 |
+ |
{ |
418 |
+ |
FUNARGS fa; |
419 |
+ |
int i; |
420 |
+ |
|
421 |
+ |
if (readfargs(&fa, fin) != 1) |
422 |
+ |
return(-1); |
423 |
+ |
if (fa.nfargs > 5) |
424 |
+ |
return(-1); |
425 |
+ |
printf("%d", fa.nsargs); |
426 |
+ |
if (idprefix == NULL) |
427 |
+ |
for (i = 0; i < fa.nsargs; i++) |
428 |
+ |
printf(" %s", fa.sarg[i]); |
429 |
+ |
else |
430 |
+ |
for (i = 0; i < fa.nsargs; i++) { |
431 |
+ |
char sname[256], *sp; |
432 |
+ |
register char *cp1, *cp2 = sname; |
433 |
+ |
/* add idprefix */ |
434 |
+ |
for (sp = fa.sarg[i]; *sp; sp = cp1) { |
435 |
+ |
for (cp1 = idprefix; *cp1; ) |
436 |
+ |
*cp2++ = *cp1++; |
437 |
+ |
*cp2++ = '.'; |
438 |
+ |
for (cp1 = sp; *cp1 && |
439 |
+ |
(*cp2++ = *cp1++) != '>'; ) |
440 |
+ |
; |
441 |
+ |
} |
442 |
+ |
*cp2 = '\0'; |
443 |
+ |
printf(" %s", sname); |
444 |
+ |
} |
445 |
+ |
printf("\n0\n%d", fa.nfargs); |
446 |
+ |
if (fa.nfargs > 2) |
447 |
+ |
printf(" %12.6g %12.6g %12.6g", fa.farg[0]/tot.sca, |
448 |
+ |
fa.farg[1]/tot.sca, fa.farg[2]/tot.sca); |
449 |
+ |
if (fa.nfargs > 3) |
450 |
+ |
printf(" %12.6g", fa.farg[3]); |
451 |
+ |
if (fa.nfargs > 4) |
452 |
+ |
printf(" %12.6g", fa.farg[4]); |
453 |
+ |
printf("\n"); |
454 |
+ |
freefargs(&fa); |
455 |
+ |
return(0); |
456 |
+ |
} |
457 |
+ |
|
458 |
+ |
|
459 |
|
m_dielectric(fin) /* transform arguments for dielectric */ |
460 |
|
FILE *fin; |
461 |
|
{ |
462 |
< |
double pow(); |
383 |
< |
register FUNARGS *fa; |
462 |
> |
FUNARGS fa; |
463 |
|
|
464 |
< |
if ((fa = getfargs(fin)) == NULL) |
464 |
> |
if (readfargs(&fa, fin) != 1) |
465 |
|
return(-1); |
466 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 5) |
466 |
> |
if (fa.nsargs != 0 || fa.nfargs != 5) |
467 |
|
return(-1); |
468 |
|
printf("0\n0\n5"); |
469 |
< |
printf(" %18.12g %18.12g %18.12g", |
470 |
< |
pow(fa->farg[0], 1.0/tot.sca), |
471 |
< |
pow(fa->farg[1], 1.0/tot.sca), |
472 |
< |
pow(fa->farg[2], 1.0/tot.sca)); |
473 |
< |
printf(" %18.12g %18.12g\n", fa->farg[3], fa->farg[4]); |
474 |
< |
freefargs(fa); |
469 |
> |
printf(" %12.6g %12.6g %12.6g", |
470 |
> |
pow(fa.farg[0], 1.0/tot.sca), |
471 |
> |
pow(fa.farg[1], 1.0/tot.sca), |
472 |
> |
pow(fa.farg[2], 1.0/tot.sca)); |
473 |
> |
printf(" %12.6g %12.6g\n", fa.farg[3], fa.farg[4]); |
474 |
> |
freefargs(&fa); |
475 |
|
return(0); |
476 |
|
} |
477 |
|
|
479 |
|
m_interface(fin) /* transform arguments for interface */ |
480 |
|
FILE *fin; |
481 |
|
{ |
482 |
< |
double pow(); |
404 |
< |
register FUNARGS *fa; |
482 |
> |
FUNARGS fa; |
483 |
|
|
484 |
< |
if ((fa = getfargs(fin)) == NULL) |
484 |
> |
if (readfargs(&fa, fin) != 1) |
485 |
|
return(-1); |
486 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
486 |
> |
if (fa.nsargs != 0 || fa.nfargs != 8) |
487 |
|
return(-1); |
488 |
|
printf("0\n0\n8\n"); |
489 |
< |
printf("%18.12g %18.12g %18.12g", |
490 |
< |
pow(fa->farg[0], 1.0/tot.sca), |
491 |
< |
pow(fa->farg[1], 1.0/tot.sca), |
492 |
< |
pow(fa->farg[2], 1.0/tot.sca)); |
493 |
< |
printf(" %18.12g\n", fa->farg[3]); |
494 |
< |
printf("%18.12g %18.12g %18.12g", |
495 |
< |
pow(fa->farg[4], 1.0/tot.sca), |
496 |
< |
pow(fa->farg[5], 1.0/tot.sca), |
497 |
< |
pow(fa->farg[6], 1.0/tot.sca)); |
498 |
< |
printf(" %18.12g\n", fa->farg[7]); |
499 |
< |
freefargs(fa); |
489 |
> |
printf("%12.6g %12.6g %12.6g", |
490 |
> |
pow(fa.farg[0], 1.0/tot.sca), |
491 |
> |
pow(fa.farg[1], 1.0/tot.sca), |
492 |
> |
pow(fa.farg[2], 1.0/tot.sca)); |
493 |
> |
printf(" %12.6g\n", fa.farg[3]); |
494 |
> |
printf("%12.6g %12.6g %12.6g", |
495 |
> |
pow(fa.farg[4], 1.0/tot.sca), |
496 |
> |
pow(fa.farg[5], 1.0/tot.sca), |
497 |
> |
pow(fa.farg[6], 1.0/tot.sca)); |
498 |
> |
printf(" %12.6g\n", fa.farg[7]); |
499 |
> |
freefargs(&fa); |
500 |
|
return(0); |
501 |
|
} |
502 |
|
|
505 |
|
FILE *fin; |
506 |
|
{ |
507 |
|
int i; |
508 |
< |
double v[3]; |
509 |
< |
register FUNARGS *fa; |
508 |
> |
FVECT v; |
509 |
> |
FUNARGS fa; |
510 |
|
|
511 |
< |
if ((fa = getfargs(fin)) == NULL) |
511 |
> |
if (readfargs(&fa, fin) != 1) |
512 |
|
return(-1); |
513 |
< |
if (fa->niargs != 0 || (fa->nfargs != 9 && |
436 |
< |
fa->nfargs != 11 && fa->nfargs != 15)) |
513 |
> |
if (fa.nfargs < 9) |
514 |
|
return(-1); |
515 |
|
/* string arguments */ |
516 |
< |
printf("%d", fa->nsargs); |
517 |
< |
for (i = 0; i < fa->nsargs; i++) |
518 |
< |
printf(" %s", fa->sarg[i]); |
519 |
< |
printf("\n0\n%d\n", fa->nfargs); |
516 |
> |
printf("%d", fa.nsargs); |
517 |
> |
for (i = 0; i < fa.nsargs; i++) |
518 |
> |
printf(" %s", fa.sarg[i]); |
519 |
> |
printf("\n0\n%d\n", fa.nfargs); |
520 |
|
/* anchor point */ |
521 |
< |
multp3(v, fa->farg, tot.xfm); |
521 |
> |
multp3(v, fa.farg, tot.xfm); |
522 |
|
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
523 |
|
/* right vector */ |
524 |
< |
multv3(v, fa->farg+3, tot.xfm); |
524 |
> |
multv3(v, fa.farg+3, tot.xfm); |
525 |
|
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
526 |
|
/* down vector */ |
527 |
< |
multv3(v, fa->farg+6, tot.xfm); |
528 |
< |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
529 |
< |
/* forground and background */ |
530 |
< |
if (fa->nfargs == 11) |
531 |
< |
printf(" %18.12g %18.12g\n", fa->farg[9], fa->farg[10]); |
532 |
< |
else if (fa->nfargs == 15) { |
533 |
< |
printf(" %18.12g %18.12g %18.12g\n", |
457 |
< |
fa->farg[9], fa->farg[10], fa->farg[11]); |
458 |
< |
printf(" %18.12g %18.12g %18.12g\n", |
459 |
< |
fa->farg[12], fa->farg[13], fa->farg[14]); |
527 |
> |
multv3(v, fa.farg+6, tot.xfm); |
528 |
> |
printf(" %18.12g %18.12g %18.12g", v[0], v[1], v[2]); |
529 |
> |
/* remaining arguments */ |
530 |
> |
for (i = 9; i < fa.nfargs; i++) { |
531 |
> |
if (i%3 == 0) |
532 |
> |
putchar('\n'); |
533 |
> |
printf(" %18.12g", fa.farg[i]); |
534 |
|
} |
535 |
< |
freefargs(fa); |
535 |
> |
putchar('\n'); |
536 |
> |
freefargs(&fa); |
537 |
|
return(0); |
538 |
|
} |
539 |
|
|
541 |
|
o_source(fin) /* transform source arguments */ |
542 |
|
FILE *fin; |
543 |
|
{ |
544 |
< |
double dv[3]; |
545 |
< |
register FUNARGS *fa; |
544 |
> |
FVECT dv; |
545 |
> |
FUNARGS fa; |
546 |
|
|
547 |
< |
if ((fa = getfargs(fin)) == NULL) |
547 |
> |
if (readfargs(&fa, fin) != 1) |
548 |
|
return(-1); |
549 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
549 |
> |
if (fa.nsargs != 0 || fa.nfargs != 4) |
550 |
|
return(-1); |
551 |
|
/* transform direction vector */ |
552 |
< |
multv3(dv, fa->farg, tot.xfm); |
552 |
> |
multv3(dv, fa.farg, tot.xfm); |
553 |
|
/* output */ |
554 |
|
printf("0\n0\n4"); |
555 |
|
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
556 |
< |
dv[0], dv[1], dv[2], fa->farg[3]); |
557 |
< |
freefargs(fa); |
556 |
> |
dv[0], dv[1], dv[2], fa.farg[3]); |
557 |
> |
freefargs(&fa); |
558 |
|
return(0); |
559 |
|
} |
560 |
|
|
562 |
|
o_sphere(fin) /* transform sphere arguments */ |
563 |
|
FILE *fin; |
564 |
|
{ |
565 |
< |
double cent[3], rad; |
566 |
< |
register FUNARGS *fa; |
565 |
> |
FVECT cent; |
566 |
> |
double rad; |
567 |
> |
FUNARGS fa; |
568 |
|
|
569 |
< |
if ((fa = getfargs(fin)) == NULL) |
569 |
> |
if (readfargs(&fa, fin) != 1) |
570 |
|
return(-1); |
571 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
571 |
> |
if (fa.nsargs != 0 || fa.nfargs != 4) |
572 |
|
return(-1); |
573 |
|
|
574 |
< |
multp3(cent, fa->farg, tot.xfm); /* transform center */ |
574 |
> |
multp3(cent, fa.farg, tot.xfm); /* transform center */ |
575 |
|
|
576 |
< |
rad = fa->farg[3] * tot.sca; /* scale radius */ |
576 |
> |
rad = fa.farg[3] * tot.sca; /* scale radius */ |
577 |
|
|
578 |
|
printf("0\n0\n4"); |
579 |
|
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
580 |
|
cent[0], cent[1], cent[2], rad); |
581 |
< |
freefargs(fa); |
581 |
> |
freefargs(&fa); |
582 |
|
return(0); |
583 |
|
} |
584 |
|
|
586 |
|
o_face(fin) /* transform face arguments */ |
587 |
|
FILE *fin; |
588 |
|
{ |
589 |
< |
double p[3]; |
589 |
> |
FVECT p; |
590 |
|
register int i; |
591 |
< |
register FUNARGS *fa; |
591 |
> |
FUNARGS fa; |
592 |
|
|
593 |
< |
if ((fa = getfargs(fin)) == NULL) |
593 |
> |
if (readfargs(&fa, fin) != 1) |
594 |
|
return(-1); |
595 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs % 3) |
595 |
> |
if (fa.nsargs != 0 || fa.nfargs % 3) |
596 |
|
return(-1); |
597 |
|
|
598 |
< |
printf("0\n0\n%d\n", fa->nfargs); |
598 |
> |
printf("0\n0\n%d\n", fa.nfargs); |
599 |
|
|
600 |
< |
for (i = 0; i < fa->nfargs; i += 3) { |
600 |
> |
for (i = 0; i < fa.nfargs; i += 3) { |
601 |
|
if (reverse) |
602 |
< |
multp3(p, fa->farg+(fa->nfargs-i-3), tot.xfm); |
602 |
> |
multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm); |
603 |
|
else |
604 |
< |
multp3(p, fa->farg+i, tot.xfm); |
604 |
> |
multp3(p, fa.farg+i, tot.xfm); |
605 |
|
printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]); |
606 |
|
} |
607 |
< |
freefargs(fa); |
607 |
> |
freefargs(&fa); |
608 |
|
return(0); |
609 |
|
} |
610 |
|
|
612 |
|
o_cone(fin) /* transform cone and cup arguments */ |
613 |
|
FILE *fin; |
614 |
|
{ |
615 |
< |
double p0[3], p1[3], r0, r1; |
616 |
< |
register FUNARGS *fa; |
615 |
> |
FVECT p0, p1; |
616 |
> |
double r0, r1; |
617 |
> |
FUNARGS fa; |
618 |
|
|
619 |
< |
if ((fa = getfargs(fin)) == NULL) |
619 |
> |
if (readfargs(&fa, fin) != 1) |
620 |
|
return(-1); |
621 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
621 |
> |
if (fa.nsargs != 0 || fa.nfargs != 8) |
622 |
|
return(-1); |
623 |
|
|
624 |
|
printf("0\n0\n8\n"); |
625 |
|
|
626 |
< |
multp3(p0, fa->farg, tot.xfm); |
627 |
< |
multp3(p1, fa->farg+3, tot.xfm); |
628 |
< |
r0 = fa->farg[6] * tot.sca; |
629 |
< |
r1 = fa->farg[7] * tot.sca; |
626 |
> |
multp3(p0, fa.farg, tot.xfm); |
627 |
> |
multp3(p1, fa.farg+3, tot.xfm); |
628 |
> |
r0 = fa.farg[6] * tot.sca; |
629 |
> |
r1 = fa.farg[7] * tot.sca; |
630 |
|
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
631 |
|
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
632 |
|
printf(" %18.12g %18.12g\n", r0, r1); |
633 |
|
|
634 |
< |
freefargs(fa); |
634 |
> |
freefargs(&fa); |
635 |
|
return(0); |
636 |
|
} |
637 |
|
|
639 |
|
o_cylinder(fin) /* transform cylinder and tube arguments */ |
640 |
|
FILE *fin; |
641 |
|
{ |
642 |
< |
double p0[3], p1[3], rad; |
643 |
< |
register FUNARGS *fa; |
642 |
> |
FVECT p0, p1; |
643 |
> |
double rad; |
644 |
> |
FUNARGS fa; |
645 |
|
|
646 |
< |
if ((fa = getfargs(fin)) == NULL) |
646 |
> |
if (readfargs(&fa, fin) != 1) |
647 |
|
return(-1); |
648 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 7) |
648 |
> |
if (fa.nsargs != 0 || fa.nfargs != 7) |
649 |
|
return(-1); |
650 |
|
|
651 |
|
printf("0\n0\n7\n"); |
652 |
|
|
653 |
< |
multp3(p0, fa->farg, tot.xfm); |
654 |
< |
multp3(p1, fa->farg+3, tot.xfm); |
655 |
< |
rad = fa->farg[6] * tot.sca; |
653 |
> |
multp3(p0, fa.farg, tot.xfm); |
654 |
> |
multp3(p1, fa.farg+3, tot.xfm); |
655 |
> |
rad = fa.farg[6] * tot.sca; |
656 |
|
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
657 |
|
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
658 |
|
printf(" %18.12g\n", rad); |
659 |
< |
freefargs(fa); |
659 |
> |
freefargs(&fa); |
660 |
|
return(0); |
661 |
|
} |
662 |
|
|
664 |
|
o_ring(fin) /* transform ring arguments */ |
665 |
|
FILE *fin; |
666 |
|
{ |
667 |
< |
double p0[3], pd[3], r0, r1; |
668 |
< |
register FUNARGS *fa; |
667 |
> |
FVECT p0, pd; |
668 |
> |
double r0, r1; |
669 |
> |
FUNARGS fa; |
670 |
|
|
671 |
< |
if ((fa = getfargs(fin)) == NULL) |
671 |
> |
if (readfargs(&fa, fin) != 1) |
672 |
|
return(-1); |
673 |
< |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
673 |
> |
if (fa.nsargs != 0 || fa.nfargs != 8) |
674 |
|
return(-1); |
675 |
|
|
676 |
|
printf("0\n0\n8\n"); |
677 |
|
|
678 |
< |
multp3(p0, fa->farg, tot.xfm); |
679 |
< |
multv3(pd, fa->farg+3, tot.xfm); |
680 |
< |
r0 = fa->farg[6] * tot.sca; |
681 |
< |
r1 = fa->farg[7] * tot.sca; |
678 |
> |
multp3(p0, fa.farg, tot.xfm); |
679 |
> |
multv3(pd, fa.farg+3, tot.xfm); |
680 |
> |
if (invert) { |
681 |
> |
pd[0] = -pd[0]; |
682 |
> |
pd[1] = -pd[1]; |
683 |
> |
pd[2] = -pd[2]; |
684 |
> |
} |
685 |
> |
r0 = fa.farg[6] * tot.sca; |
686 |
> |
r1 = fa.farg[7] * tot.sca; |
687 |
|
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
688 |
|
printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]); |
689 |
|
printf(" %18.12g %18.12g\n", r0, r1); |
690 |
< |
freefargs(fa); |
690 |
> |
freefargs(&fa); |
691 |
|
return(0); |
692 |
|
} |
693 |
|
|
694 |
|
|
611 |
– |
FUNARGS * |
612 |
– |
getfargs(fp) /* get function arguments from stream */ |
613 |
– |
FILE *fp; |
614 |
– |
{ |
615 |
– |
char *strcpy(); |
616 |
– |
char sbuf[MAXSTR]; |
617 |
– |
int n; |
618 |
– |
register FUNARGS *fa; |
619 |
– |
register int i; |
620 |
– |
|
621 |
– |
if ((fa = (FUNARGS *)malloc((unsigned)sizeof(FUNARGS))) == NULL) |
622 |
– |
goto memerr; |
623 |
– |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
624 |
– |
return(NULL); |
625 |
– |
if (fa->nsargs = n) { |
626 |
– |
fa->sarg = (char **)malloc((unsigned)fa->nsargs*sizeof(char *)); |
627 |
– |
if (fa->sarg == NULL) |
628 |
– |
goto memerr; |
629 |
– |
for (i = 0; i < fa->nsargs; i++) { |
630 |
– |
if (fscanf(fp, "%s", sbuf) != 1) |
631 |
– |
return(NULL); |
632 |
– |
if ((fa->sarg[i] = malloc((unsigned)strlen(sbuf)+1)) == NULL) |
633 |
– |
goto memerr; |
634 |
– |
strcpy(fa->sarg[i], sbuf); |
635 |
– |
} |
636 |
– |
} else |
637 |
– |
fa->sarg = NULL; |
638 |
– |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
639 |
– |
return(NULL); |
640 |
– |
if (fa->niargs = n) { |
641 |
– |
fa->iarg = (int *)malloc((unsigned)fa->niargs*sizeof(int)); |
642 |
– |
if (fa->iarg == NULL) |
643 |
– |
goto memerr; |
644 |
– |
for (i = 0; i < fa->niargs; i++) |
645 |
– |
if (fscanf(fp, "%d", &fa->iarg[i]) != 1) |
646 |
– |
return(NULL); |
647 |
– |
} else |
648 |
– |
fa->iarg = NULL; |
649 |
– |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
650 |
– |
return(NULL); |
651 |
– |
if (fa->nfargs = n) { |
652 |
– |
fa->farg = (double *)malloc((unsigned)fa->nfargs*sizeof(double)); |
653 |
– |
if (fa->farg == NULL) |
654 |
– |
goto memerr; |
655 |
– |
for (i = 0; i < fa->nfargs; i++) |
656 |
– |
if (fscanf(fp, "%lf", &fa->farg[i]) != 1) |
657 |
– |
return(NULL); |
658 |
– |
} else |
659 |
– |
fa->farg = NULL; |
660 |
– |
return(fa); |
661 |
– |
memerr: |
662 |
– |
fprintf(stderr, "%s: out of memory in getfargs\n", progname); |
663 |
– |
exit(1); |
664 |
– |
} |
665 |
– |
|
666 |
– |
|
667 |
– |
freefargs(fa) /* free memory associated with fa */ |
668 |
– |
register FUNARGS *fa; |
669 |
– |
{ |
670 |
– |
register int i; |
671 |
– |
|
672 |
– |
for (i = 0; i < fa->nsargs; i++) |
673 |
– |
free(fa->sarg[i]); |
674 |
– |
if (fa->nsargs) |
675 |
– |
free(fa->sarg); |
676 |
– |
if (fa->niargs) |
677 |
– |
free(fa->iarg); |
678 |
– |
if (fa->nfargs) |
679 |
– |
free(fa->farg); |
680 |
– |
free(fa); |
681 |
– |
} |
682 |
– |
|
683 |
– |
|
695 |
|
initotypes() /* initialize ofun[] array */ |
696 |
|
{ |
686 |
– |
extern int o_source(); |
687 |
– |
extern int o_sphere(); |
688 |
– |
extern int o_face(); |
689 |
– |
extern int o_cone(); |
690 |
– |
extern int o_cylinder(); |
691 |
– |
extern int o_ring(); |
692 |
– |
extern int m_glow(); |
693 |
– |
extern int m_spot(); |
694 |
– |
extern int m_dielectric(); |
695 |
– |
extern int m_interface(); |
696 |
– |
extern int text(); |
697 |
– |
extern int alias(); |
698 |
– |
extern int passargs(); |
699 |
– |
extern int addxform(); |
697 |
|
register int i; |
698 |
|
|
699 |
|
if (ofun[OBJ_SOURCE].funp == o_source) |
720 |
|
ofun[MAT_SPOT].funp = m_spot; |
721 |
|
ofun[MAT_DIELECTRIC].funp = m_dielectric; |
722 |
|
ofun[MAT_INTERFACE].funp = m_interface; |
723 |
+ |
ofun[MAT_MIST].funp = m_mist; |
724 |
|
ofun[PAT_CTEXT].funp = |
725 |
|
ofun[PAT_BTEXT].funp = |
726 |
|
ofun[MIX_TEXT].funp = text; |
727 |
|
ofun[ALIAS].funp = alias; |
728 |
+ |
/* surface inverses */ |
729 |
+ |
tinvers[OBJ_FACE] = OBJ_FACE; |
730 |
+ |
tinvers[OBJ_SOURCE] = OBJ_SOURCE; |
731 |
+ |
tinvers[OBJ_CONE] = OBJ_CUP; |
732 |
+ |
tinvers[OBJ_CUP] = OBJ_CONE; |
733 |
+ |
tinvers[OBJ_SPHERE] = OBJ_BUBBLE; |
734 |
+ |
tinvers[OBJ_BUBBLE] = OBJ_SPHERE; |
735 |
+ |
tinvers[OBJ_RING] = OBJ_RING; |
736 |
+ |
tinvers[OBJ_CYLINDER] = OBJ_TUBE; |
737 |
+ |
tinvers[OBJ_TUBE] = OBJ_CYLINDER; |
738 |
+ |
tinvers[OBJ_INSTANCE] = OBJ_INSTANCE; /* oh, well */ |
739 |
|
} |
740 |
+ |
|
741 |
+ |
|
742 |
+ |
#ifdef OLDXFORM |
743 |
+ |
openmain(fname) |
744 |
+ |
char *fname; |
745 |
+ |
{ |
746 |
+ |
if (fname == NULL) { |
747 |
+ |
strcpy(mainfn, "standard input"); |
748 |
+ |
mainfp = stdin; |
749 |
+ |
return; |
750 |
+ |
} |
751 |
+ |
if (mainfp != NULL) { |
752 |
+ |
if (!strcmp(fname, mainfn)) { |
753 |
+ |
rewind(mainfp); |
754 |
+ |
return; |
755 |
+ |
} |
756 |
+ |
fclose(mainfp); |
757 |
+ |
} |
758 |
+ |
if ((mainfp = fopen(fname, "r")) == NULL) { |
759 |
+ |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
760 |
+ |
progname, fname); |
761 |
+ |
exit(1); |
762 |
+ |
} |
763 |
+ |
strcpy(mainfn, fname); |
764 |
+ |
} |
765 |
+ |
#else |
766 |
+ |
openmain(fname) /* open fname for input, changing to its directory */ |
767 |
+ |
char *fname; |
768 |
+ |
{ |
769 |
+ |
extern FILE *tmpfile(); |
770 |
+ |
extern char *getlibpath(), *getpath(); |
771 |
+ |
static char origdir[MAXPATH]; |
772 |
+ |
static char curfn[MAXPATH]; |
773 |
+ |
static int diffdir; |
774 |
+ |
register char *fpath; |
775 |
+ |
|
776 |
+ |
if (fname == NULL) { /* standard input */ |
777 |
+ |
if (mainfp == NULL) { |
778 |
+ |
register int c; |
779 |
+ |
strcpy(mainfn, "standard input"); |
780 |
+ |
if (nrept <= 1) { |
781 |
+ |
mainfp = stdin; |
782 |
+ |
return; /* just read once */ |
783 |
+ |
} |
784 |
+ |
/* else copy */ |
785 |
+ |
if ((mainfp = tmpfile()) == NULL) { |
786 |
+ |
fprintf(stderr, |
787 |
+ |
"%s: cannot create temporary file\n", |
788 |
+ |
progname); |
789 |
+ |
exit(1); |
790 |
+ |
} |
791 |
+ |
while ((c = getc(stdin)) != EOF) |
792 |
+ |
putc(c, mainfp); |
793 |
+ |
fclose(stdin); |
794 |
+ |
} |
795 |
+ |
rewind(mainfp); /* rewind copy */ |
796 |
+ |
return; |
797 |
+ |
} |
798 |
+ |
if (mainfp == NULL) { /* first call, initialize */ |
799 |
+ |
getwd(origdir); |
800 |
+ |
} else if (!strcmp(fname, curfn)) { /* just need to rewind? */ |
801 |
+ |
rewind(mainfp); |
802 |
+ |
return; |
803 |
+ |
} else { /* else close old stream */ |
804 |
+ |
fclose(mainfp); |
805 |
+ |
if (diffdir) { |
806 |
+ |
chdir(origdir); |
807 |
+ |
diffdir = 0; |
808 |
+ |
} |
809 |
+ |
} |
810 |
+ |
strcpy(curfn, fname); /* remember file name */ |
811 |
+ |
/* get full path */ |
812 |
+ |
if ((fpath = getpath(fname, getlibpath(), R_OK)) == NULL) { |
813 |
+ |
fprintf(stderr, "%s: cannot find file \"%s\"\n", |
814 |
+ |
progname, fname); |
815 |
+ |
exit(1); |
816 |
+ |
} |
817 |
+ |
if (fpath[0] == '.' && ISDIRSEP(fpath[1])) /* remove leading ./ */ |
818 |
+ |
fpath += 2; |
819 |
+ |
/* record path name */ |
820 |
+ |
strcpy(mainfn, fpath); |
821 |
+ |
if (expand) { /* change to local directory */ |
822 |
+ |
register char *cp = fpath + strlen(fpath); /* get dir. */ |
823 |
+ |
while (cp > fpath) { |
824 |
+ |
cp--; |
825 |
+ |
if (ISDIRSEP(*cp)) { |
826 |
+ |
if (cp == fpath) |
827 |
+ |
cp++; /* root special case */ |
828 |
+ |
break; |
829 |
+ |
} |
830 |
+ |
} |
831 |
+ |
*cp = '\0'; |
832 |
+ |
if (fpath[0]) { /* change to new directory? */ |
833 |
+ |
if (chdir(fpath) < 0) { |
834 |
+ |
fprintf(stderr, |
835 |
+ |
"%s: cannot change directory to \"%s\"\n", |
836 |
+ |
progname, fpath); |
837 |
+ |
exit(1); |
838 |
+ |
} |
839 |
+ |
diffdir++; |
840 |
+ |
} |
841 |
+ |
/* get final path component */ |
842 |
+ |
for (fpath = fname+strlen(fname); |
843 |
+ |
fpath > fname && !ISDIRSEP(fpath[-1]); fpath--) |
844 |
+ |
; |
845 |
+ |
} |
846 |
+ |
/* open the file */ |
847 |
+ |
if ((mainfp = fopen(fpath, "r")) == NULL) { |
848 |
+ |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
849 |
+ |
progname, mainfn); |
850 |
+ |
exit(1); |
851 |
+ |
} |
852 |
+ |
} |
853 |
+ |
#endif |