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root/radiance/ray/src/util/rcollate.c
Revision: 2.40
Committed: Wed Mar 16 17:36:45 2022 UTC (2 years, 1 month ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.39: +49 -25 lines
Log Message:
feat(rcollate): Added formatting check for ASCII input with -c option

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rcollate.c,v 2.39 2022/03/03 03:55:13 greg Exp $";
3 #endif
4 /*
5 * Utility to re-order records in a binary or ASCII data file (matrix)
6 */
7
8 #include <stdlib.h>
9 #include <ctype.h>
10 #include "platform.h"
11 #include "rtio.h"
12 #include "resolu.h"
13 #if defined(_WIN32) || defined(_WIN64)
14 #undef ftello
15 #define ftello ftell
16 #undef ssize_t
17 #define ssize_t size_t
18 #else
19 #include <sys/mman.h>
20 #endif
21
22 static char delims[] = " \t\n\r\f";
23
24 #define MAXLEVELS 16 /* max RxC.. block pairs */
25
26 typedef struct {
27 void *mapped; /* memory-mapped pointer */
28 void *base; /* pointer to base memory */
29 size_t len; /* allocated memory length */
30 } MEMLOAD; /* file loaded/mapped into memory */
31
32 typedef struct {
33 int nw_rec; /* number of words per record */
34 ssize_t nrecs; /* number of records we found */
35 char *rec[1]; /* record array (extends struct) */
36 } RECINDEX;
37
38 int warnings = 1; /* report warnings? */
39
40 char *fmtid = NULL; /* format id */
41 int comp_size = 0; /* binary bytes/channel */
42 int n_comp = 0; /* components/record */
43 int ni_columns = 0; /* number of input columns */
44 int ni_rows = 0; /* number of input rows */
45 int no_columns = 0; /* number of output columns */
46 int no_rows = 0; /* number of output rows */
47 int transpose = 0; /* transpose rows & cols? */
48 int i_header = 1; /* input header? */
49 int o_header = 1; /* output header? */
50 int outArray[MAXLEVELS][2]; /* output block nesting */
51 int outLevels = 0; /* number of blocking levels */
52 int check = 0; /* force data check? */
53
54 /* free loaded file */
55 static void
56 free_load(MEMLOAD *mp)
57 {
58 if (mp == NULL || (mp->base == NULL) | (mp->len <= 0))
59 return;
60 #ifdef MAP_FILE
61 if (mp->mapped)
62 munmap(mp->mapped, mp->len);
63 else
64 #endif
65 free(mp->base);
66 mp->mapped = NULL;
67 mp->base = NULL;
68 mp->len = 0;
69 }
70
71 /* load memory from an input stream, starting from current position */
72 static int
73 load_stream(MEMLOAD *mp, FILE *fp)
74 {
75 size_t alloced = 0;
76 char buf[8192];
77 size_t nr;
78
79 if (mp == NULL)
80 return(-1);
81 mp->mapped = NULL;
82 mp->base = NULL;
83 mp->len = 0;
84 if (fp == NULL)
85 return(-1);
86 while ((nr = fread(buf, 1, sizeof(buf), fp)) > 0) {
87 if (!alloced)
88 mp->base = malloc(alloced = nr);
89 else if (mp->len+nr > alloced)
90 mp->base = realloc(mp->base,
91 alloced = alloced*(2+(nr==sizeof(buf)))/2+nr);
92 if (mp->base == NULL)
93 return(-1);
94 memcpy((char *)mp->base + mp->len, buf, nr);
95 mp->len += nr;
96 }
97 if (ferror(fp)) {
98 free_load(mp);
99 return(-1);
100 }
101 if (alloced > mp->len*5/4) /* don't waste too much space */
102 mp->base = realloc(mp->base, mp->len);
103 return(mp->len > 0);
104 }
105
106 #if defined(_WIN32) || defined(_WIN64)
107 /* too difficult to fix this */
108 #define load_file load_stream
109 #else
110 /* load a file into memory */
111 static int
112 load_file(MEMLOAD *mp, FILE *fp)
113 {
114 int fd;
115 off_t skip, flen, fpos;
116 if (mp == NULL)
117 return(-1);
118 mp->mapped = NULL;
119 mp->base = NULL;
120 mp->len = 0;
121 if (fp == NULL)
122 return(-1);
123 fd = fileno(fp);
124 skip = ftello(fp);
125 flen = lseek(fd, 0, SEEK_END);
126 if (flen <= skip)
127 return((int)(flen - skip));
128 mp->len = (size_t)(flen - skip);
129 #ifdef MAP_FILE
130 if (mp->len >= 1L<<20) { /* map file if >= 1 MByte */
131 mp->mapped = mmap(NULL, flen, PROT_READ, MAP_PRIVATE, fd, 0);
132 if (mp->mapped != MAP_FAILED) {
133 mp->base = (char *)mp->mapped + skip;
134 return(1); /* mmap() success */
135 }
136 mp->mapped = NULL; /* else fall back to reading it in... */
137 }
138 #endif
139 if (lseek(fd, skip, SEEK_SET) != skip ||
140 (mp->base = malloc(mp->len)) == NULL) {
141 mp->len = 0;
142 return(-1);
143 }
144 fpos = skip;
145 while (fpos < flen) { /* read() fails if n > 2 GBytes */
146 ssize_t nread = read(fd, (char *)mp->base+(fpos-skip),
147 (flen-fpos < 1L<<24) ? flen-fpos : 1L<<24);
148 if (nread <= 0) {
149 free_load(mp);
150 return(-1);
151 }
152 fpos += nread;
153 }
154 return(1);
155 }
156 #endif
157
158 /* free a record index */
159 #define free_records(rp) free(rp)
160
161 /* compute record index */
162 static RECINDEX *
163 index_records(const MEMLOAD *mp, int nw_rec)
164 {
165 int nall = 0;
166 RECINDEX *rp;
167 char *cp, *mend;
168 int n;
169
170 if (mp == NULL || (mp->base == NULL) | (mp->len <= 0))
171 return(NULL);
172 if (nw_rec <= 0)
173 return(NULL);
174 nall = 1000;
175 rp = (RECINDEX *)malloc(sizeof(RECINDEX) + nall*sizeof(char *));
176 if (rp == NULL)
177 return(NULL);
178 rp->nw_rec = nw_rec;
179 rp->nrecs = 0;
180 cp = (char *)mp->base;
181 mend = cp + mp->len;
182 for ( ; ; ) { /* whitespace-separated words */
183 while (cp < mend && !*cp | isspace(*cp))
184 ++cp;
185 if (cp >= mend)
186 break;
187 if (rp->nrecs >= nall) {
188 nall += nall>>1; /* get more record space */
189 rp = (RECINDEX *)realloc(rp,
190 sizeof(RECINDEX) + nall*sizeof(char *));
191 if (rp == NULL)
192 return(NULL);
193 }
194 rp->rec[rp->nrecs++] = cp; /* point to first non-white */
195 n = rp->nw_rec;
196 while (++cp < mend) /* find end of record */
197 if (!*cp | isspace(*cp)) {
198 if (--n <= 0)
199 break; /* got requisite # words */
200 do { /* else find next word */
201 if (*cp == '\n') {
202 fputs("Unexpected EOL in record!\n", stderr);
203 free_records(rp);
204 return(NULL);
205 }
206 if (++cp >= mend)
207 break;
208 } while (!*cp | isspace(*cp));
209 }
210 }
211 rp->rec[rp->nrecs] = mend; /* reallocate to save space */
212 rp = (RECINDEX *)realloc(rp,
213 sizeof(RECINDEX) + rp->nrecs*sizeof(char *));
214 return(rp);
215 }
216
217 /* count number of columns based on first EOL */
218 static int
219 count_columns(const RECINDEX *rp)
220 {
221 char *cp = rp->rec[0];
222 char *mend = rp->rec[rp->nrecs];
223 int i;
224
225 while (*cp != '\n')
226 if (++cp >= mend)
227 return(0);
228 for (i = 0; i < rp->nrecs; i++)
229 if (rp->rec[i] >= cp)
230 break;
231 return(i);
232 }
233
234 /* copy nth record from index to stdout */
235 static int
236 print_record(const RECINDEX *rp, ssize_t n)
237 {
238 int words2go = rp->nw_rec;
239 char *scp;
240
241 if ((n < 0) | (n >= rp->nrecs))
242 return(0);
243 scp = rp->rec[n];
244
245 if (check && !isfltd(scp, delims))
246 goto formerr;
247 do {
248 putc(*scp++, stdout);
249 if (!*scp | isspace(*scp)) {
250 if (--words2go <= 0)
251 break;
252 putc(' ', stdout); /* single space btwn. words */
253 do
254 if (++scp >= rp->rec[n+1])
255 break;
256 while (!*scp | isspace(*scp));
257
258 if (check && !isfltd(scp, delims))
259 goto formerr;
260 }
261 } while (scp < rp->rec[n+1]);
262 /* caller adds record sep. */
263 return(1);
264 formerr:
265 fputs("Badly formed number: ", stderr);
266 while (*scp && !isspace(*scp))
267 fputc(*scp++, stderr);
268 fputc('\n', stderr);
269 return(0);
270 }
271
272 /* copy a stream to stdout */
273 static int
274 output_stream(FILE *fp)
275 {
276 char buf[8192];
277 ssize_t n;
278
279 if (fp == NULL)
280 return(0);
281 fflush(stdout);
282 while ((n = fread(buf, 1, sizeof(buf), fp)) > 0)
283 if (write(fileno(stdout), buf, n) != n)
284 return(0);
285 return(!ferror(fp));
286 }
287
288 /* get next word from stream, leaving stream on EOL or start of next word */
289 static char *
290 fget_word(char buf[256], FILE *fp)
291 {
292 int c;
293 char *cp;
294 /* skip nul's and white space */
295 while (!(c = getc(fp)) || isspace(c))
296 ;
297 if (c == EOF)
298 return(NULL);
299 cp = buf;
300 do
301 *cp++ = c;
302 while ((c = getc(fp)) != EOF && !isspace(c) && cp < buf+255);
303 *cp = '\0';
304 while (isspace(c) & (c != '\n'))
305 c = getc(fp);
306 if (c != EOF)
307 ungetc(c, fp);
308 return(buf);
309 }
310
311 /* parse RxCx... string */
312 static int
313 get_array(const char *spec, int blklvl[][2], int nlvls)
314 {
315 int n;
316
317 if (nlvls <= 0) {
318 fputs("Too many block levels!\n", stderr);
319 exit(1);
320 }
321 if (sscanf(spec, "%dx%d", &blklvl[0][0], &blklvl[0][1]) != 2) {
322 fputs("Bad block specification!\n", stderr);
323 exit(1);
324 }
325 while (isdigit(*spec))
326 spec++;
327 spec++; /* 'x' */
328 while (isdigit(*spec))
329 spec++;
330 if ((*spec != 'x') & (*spec != 'X')) {
331 if (*spec) {
332 fputs("Blocks must be separated by 'x' or 'X'\n", stderr);
333 exit(1);
334 }
335 return(1);
336 }
337 spec++;
338 n = get_array(spec, blklvl+1, nlvls-1);
339 if (!n)
340 return(0);
341 blklvl[0][0] *= blklvl[1][0];
342 blklvl[0][1] *= blklvl[1][1];
343 return(n+1);
344 }
345
346 /* check settings and assign defaults */
347 static int
348 check_sizes()
349 {
350 if (fmtid == NULL) {
351 fmtid = "ascii";
352 } else if (!comp_size) {
353 if (!strcmp(fmtid, "float"))
354 comp_size = sizeof(float);
355 else if (!strcmp(fmtid, "double"))
356 comp_size = sizeof(double);
357 else if (!strcmp(fmtid, "byte"))
358 comp_size = 1;
359 else if (strcmp(fmtid, "ascii")) {
360 fprintf(stderr, "Unsupported format: %s\n", fmtid);
361 return(0);
362 }
363 }
364 if (transpose && (no_rows <= 0) & (no_columns <= 0)) {
365 if (ni_rows > 0) no_columns = ni_rows;
366 if (ni_columns > 0) no_rows = ni_columns;
367 } else if ((no_rows <= 0) & (no_columns > 0) &&
368 !((ni_rows*ni_columns) % no_columns))
369 no_rows = ni_rows*ni_columns/no_columns;
370 if (n_comp <= 0)
371 n_comp = 3;
372 return(1);
373 }
374
375 /* call to compute block input position */
376 static ssize_t
377 get_block_pos(int r, int c, int blklvl[][2], int nlvls)
378 {
379 ssize_t n = 0;
380
381 while (nlvls > 1) {
382 int sr = r/blklvl[1][0];
383 int sc = c/blklvl[1][1];
384 r -= sr*blklvl[1][0];
385 c -= sc*blklvl[1][1];
386 n += sr*blklvl[1][0]*blklvl[0][1] + sc*blklvl[1][0]*blklvl[1][1];
387 blklvl++;
388 nlvls--;
389 }
390 n += r*blklvl[0][1] + c;
391 return(n);
392 }
393
394 /* return input offset based on array ordering and transpose option */
395 static ssize_t
396 get_input_pos(int r, int c)
397 {
398 ssize_t n;
399
400 if (outLevels > 1) { /* block reordering */
401 n = get_block_pos(r, c, outArray, outLevels);
402 if (transpose) {
403 r = n/ni_rows;
404 c = n - r*ni_rows;
405 n = (ssize_t)c*ni_columns + r;
406 }
407 } else if (transpose) /* transpose only */
408 n = (ssize_t)c*ni_columns + r;
409 else /* XXX should never happen! */
410 n = (ssize_t)r*no_columns + c;
411 return(n);
412 }
413
414 /* output reordered ASCII or binary data from memory */
415 static int
416 do_reorder(const MEMLOAD *mp)
417 {
418 static const char tabEOL[2] = {'\t','\n'};
419 RECINDEX *rp = NULL;
420 ssize_t nrecords;
421 int i, j;
422 /* propogate sizes */
423 if (ni_rows <= 0)
424 ni_rows = transpose ? no_columns : no_rows;
425 if (ni_columns <= 0)
426 ni_columns = transpose ? no_rows : no_columns;
427 /* get # records (& index) */
428 if (!comp_size) {
429 if ((rp = index_records(mp, n_comp)) == NULL)
430 return(0);
431 if (ni_columns <= 0)
432 ni_columns = count_columns(rp);
433 nrecords = rp->nrecs;
434 } else if ((ni_rows > 0) & (ni_columns > 0)) {
435 nrecords = (ssize_t)ni_rows*ni_columns;
436 if (nrecords > mp->len/(n_comp*comp_size)) {
437 fputs("Input too small for specified size and type\n",
438 stderr);
439 return(0);
440 }
441 } else
442 nrecords = mp->len/(n_comp*comp_size);
443 /* check sizes */
444 if ((ni_rows <= 0) & (ni_columns > 0))
445 ni_rows = nrecords/ni_columns;
446 else if ((ni_columns <= 0) & (ni_rows > 0))
447 ni_columns = nrecords/ni_rows;
448 if (nrecords != (ssize_t)ni_rows*ni_columns)
449 goto badspec;
450 if (transpose) {
451 if (no_columns <= 0)
452 no_columns = ni_rows;
453 if (no_rows <= 0)
454 no_rows = ni_columns;
455 if (outLevels <= 1 &&
456 (no_rows != ni_columns) | (no_columns != ni_rows))
457 goto badspec;
458 } else {
459 if (no_columns <= 0)
460 no_columns = ni_columns;
461 if (no_rows <= 0)
462 no_rows = ni_rows;
463 }
464 if (ni_rows*ni_columns != no_rows*no_columns) {
465 fputs("Number of input and output records do not match\n",
466 stderr);
467 return(0);
468 }
469 if (o_header) { /* finish header? */
470 printf("NROWS=%d\n", no_rows);
471 printf("NCOLS=%d\n", no_columns);
472 fputformat(fmtid, stdout);
473 fputc('\n', stdout);
474 }
475 /* reorder records */
476 for (i = 0; i < no_rows; i++) {
477 for (j = 0; j < no_columns; j++) {
478 ssize_t n = get_input_pos(i, j);
479 if (n >= nrecords) {
480 fputs("Index past end-of-file\n", stderr);
481 return(0);
482 }
483 if (rp != NULL) { /* ASCII output */
484 if (!print_record(rp, n))
485 return(0);
486 putc(tabEOL[j >= no_columns-1], stdout);
487 } else { /* binary output */
488 putbinary((char *)mp->base + (n_comp*comp_size)*n,
489 comp_size, n_comp, stdout);
490 }
491 }
492 if (ferror(stdout)) {
493 fputs("Error writing to stdout\n", stderr);
494 return(0);
495 }
496 }
497 if (rp != NULL)
498 free_records(rp);
499 return(1);
500 badspec:
501 fputs("Bad dimension(s)\n", stderr);
502 return(0);
503 }
504
505 /* resize ASCII stream input by ignoring EOLs between records */
506 static int
507 do_resize(FILE *fp)
508 {
509 ssize_t records2go = ni_rows*ni_columns;
510 int columns2go = no_columns;
511 char word[256];
512
513 if (o_header) { /* finish header? */
514 if (no_rows > 0)
515 printf("NROWS=%d\n", no_rows);
516 if (no_columns > 0)
517 printf("NCOLS=%d\n", no_columns);
518 fputformat(fmtid, stdout);
519 fputc('\n', stdout);
520 }
521 /* sanity checks */
522 if (comp_size || !check &
523 (no_columns == ni_columns) & (no_rows == ni_rows))
524 return(output_stream(fp)); /* no-op -- just copy */
525 if (no_columns <= 0) {
526 fputs("Missing -oc specification\n", stderr);
527 return(0);
528 }
529 if ((records2go <= 0) & (no_rows > 0))
530 records2go = no_rows*no_columns;
531 else if (no_rows*no_columns != records2go) {
532 fprintf(stderr,
533 "Number of input and output records disagree (%dx%d != %dx%d)\n",
534 ni_rows, ni_columns, no_rows, no_columns);
535 return(0);
536 }
537 do { /* reshape records */
538 int n;
539
540 for (n = n_comp; n--; ) {
541 if (fget_word(word, fp) == NULL) {
542 if (records2go > 0 || n < n_comp-1)
543 break;
544 goto done; /* normal EOD */
545 }
546 if (check && !isfltd(word, delims)) {
547 fputs("Badly formed number: ", stderr);
548 fputs(word, stderr);
549 fputc('\n', stderr);
550 return(0);
551 }
552 fputs(word, stdout);
553 if (n) { /* mid-record? */
554 int c = getc(fp);
555 if ((c == '\n') | (c == EOF))
556 break;
557 ungetc(c, fp);
558 putc(' ', stdout);
559 }
560 }
561 if (n >= 0) {
562 fputs("Incomplete record / unexpected EOF\n", stderr);
563 return(0);
564 }
565 if (--columns2go <= 0) { /* time to end output row? */
566 putc('\n', stdout);
567 columns2go = no_columns;
568 } else /* else separate records */
569 putc('\t', stdout);
570 } while (--records2go); /* expected EOD? */
571 done:
572 if (warnings && columns2go != no_columns)
573 fputs("Warning -- incomplete final row\n", stderr);
574 if (warnings && fget_word(word, fp) != NULL)
575 fputs("Warning -- characters beyond expected EOD\n", stderr);
576 return(1);
577 }
578
579 /* process a header line and copy to stdout */
580 static int
581 headline(char *s, void *p)
582 {
583 static char fmt[MAXFMTLEN];
584 int n;
585
586 if (formatval(fmt, s)) {
587 if (fmtid == NULL) {
588 fmtid = fmt;
589 return(0);
590 }
591 if (!strcmp(fmt, fmtid))
592 return(0);
593 fprintf(stderr, "Input format '%s' != '%s'\n", fmt, fmtid);
594 return(-1);
595 }
596 if (!strncmp(s, "NROWS=", 6)) {
597 n = atoi(s+6);
598 if ((ni_rows > 0) & (n != ni_rows)) {
599 fputs("Incorrect input row count\n", stderr);
600 return(-1);
601 }
602 ni_rows = n;
603 return(0);
604 }
605 if (!strncmp(s, "NCOLS=", 6)) {
606 n = atoi(s+6);
607 if ((ni_columns > 0) & (n != ni_columns)) {
608 fputs("Incorrect input column count\n", stderr);
609 return(-1);
610 }
611 ni_columns = n;
612 return(0);
613 }
614 if (!strncmp(s, "NCOMP=", 6)) {
615 n = atoi(s+6);
616 if ((n_comp > 0) & (n != n_comp)) {
617 fputs("Incorrect number of components\n", stderr);
618 return(-1);
619 }
620 n_comp = n;
621 return(0);
622 }
623 if (o_header)
624 fputs(s, stdout); /* copy header info. */
625 return(0);
626 }
627
628 /* main routine for converting rows/columns in data file */
629 int
630 main(int argc, char *argv[])
631 {
632 int a;
633
634 for (a = 1; a < argc && argv[a][0] == '-'; a++)
635 switch (argv[a][1]) {
636 case 'i': /* input */
637 if (argv[a][2] == 'c') /* columns */
638 ni_columns = atoi(argv[++a]);
639 else if (argv[a][2] == 'r')
640 ni_rows = atoi(argv[++a]);
641 else
642 goto userr;
643 break;
644 case 'o': /* output */
645 if (argv[a][2] == 'c') /* columns */
646 no_columns = atoi(argv[++a]);
647 else if (argv[a][2] == 'r')
648 no_rows = atoi(argv[++a]);
649 else if (argv[a][2] ||
650 !(outLevels=get_array(argv[++a], outArray, MAXLEVELS)))
651 goto userr;
652 break;
653 case 'h': /* turn off header */
654 switch (argv[a][2]) {
655 case 'i':
656 i_header = 0;
657 break;
658 case 'o':
659 o_header = 0;
660 break;
661 case '\0':
662 i_header = o_header = 0;
663 break;
664 default:
665 goto userr;
666 }
667 break;
668 case 't': /* transpose on/off */
669 transpose = !transpose;
670 break;
671 case 'f': /* format */
672 switch (argv[a][2]) {
673 case 'a': /* ASCII */
674 case 'A':
675 fmtid = "ascii";
676 comp_size = 0;
677 break;
678 case 'f': /* float */
679 case 'F':
680 fmtid = "float";
681 comp_size = sizeof(float);
682 break;
683 case 'd': /* double */
684 case 'D':
685 fmtid = "double";
686 comp_size = sizeof(double);
687 break;
688 case 'b': /* binary (bytes) */
689 case 'B':
690 fmtid = "byte";
691 comp_size = 1;
692 break;
693 default:
694 goto userr;
695 }
696 if (argv[a][3]) {
697 if (!isdigit(argv[a][3]))
698 goto userr;
699 n_comp = atoi(argv[a]+3);
700 } else
701 n_comp = 1;
702 break;
703 case 'w': /* warnings on/off */
704 warnings = !warnings;
705 break;
706 case 'c': /* force check operation */
707 check = 1;
708 break;
709 default:
710 goto userr;
711 }
712 if (a < argc-1) /* arg count OK? */
713 goto userr;
714 if (outLevels) { /* should check consistency? */
715 no_rows = outArray[0][0];
716 no_columns = outArray[0][1];
717 }
718 /* open input file? */
719 if (a == argc-1 && freopen(argv[a], "r", stdin) == NULL) {
720 fprintf(stderr, "%s: cannot open for reading\n", argv[a]);
721 return(1);
722 }
723 if (comp_size) {
724 SET_FILE_BINARY(stdin);
725 SET_FILE_BINARY(stdout);
726 }
727 #ifdef getc_unlocked /* avoid stupid semaphores */
728 flockfile(stdin);
729 flockfile(stdout);
730 #endif
731 /* check for no-op */
732 if (!transpose & !check & (outLevels <= 1) & (i_header == o_header) &&
733 (no_columns == ni_columns) & (no_rows == ni_rows)) {
734 if (warnings)
735 fprintf(stderr, "%s: no-op -- copying input verbatim\n",
736 argv[0]);
737 if (!output_stream(stdin))
738 return(1);
739 return(0);
740 }
741 if (i_header) { /* read header */
742 if (getheader(stdin, headline, NULL) < 0)
743 return(1);
744 if (!check_sizes())
745 return(1);
746 if (comp_size) { /* a little late... */
747 SET_FILE_BINARY(stdin);
748 SET_FILE_BINARY(stdout);
749 }
750 } else if (!check_sizes())
751 return(1);
752 if (o_header) { /* write/add to header */
753 if (!i_header)
754 newheader("RADIANCE", stdout);
755 printargs(a, argv, stdout);
756 printf("NCOMP=%d\n", n_comp);
757 }
758 if (transpose | check | (outLevels > 1) || (o_header && no_rows <= 0)) {
759 MEMLOAD myMem; /* need to map into memory */
760 if (a == argc-1) {
761 if (load_file(&myMem, stdin) <= 0) {
762 fprintf(stderr, "%s: error loading file into memory\n",
763 argv[a]);
764 return(1);
765 }
766 } else if (load_stream(&myMem, stdin) <= 0) {
767 fprintf(stderr, "%s: error loading stdin into memory\n",
768 argv[0]);
769 return(1);
770 }
771 if (!do_reorder(&myMem))
772 return(1);
773 /* free_load(&myMem); about to exit, so don't bother */
774 } else if (!do_resize(stdin)) /* just reshaping input */
775 return(1);
776 return(0);
777 userr:
778 fprintf(stderr,
779 "Usage: %s [-h[io]][-w][-c][-f[afdb][N]][-t][-ic in_col][-ir in_row][-oc out_col][-or out_row][-o RxC[xR1xC1..]] [input.dat]\n",
780 argv[0]);
781 return(1);
782 }