ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/util/rcollate.c
Revision: 2.15
Committed: Tue Jul 8 16:39:41 2014 UTC (9 years, 8 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.14: +2 -2 lines
Log Message:
Removed unnecessary address operators from function ids.

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rcollate.c,v 2.14 2014/05/31 19:21:21 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 <string.h>
10 #include <ctype.h>
11 #include "platform.h"
12 #include "rtio.h"
13 #include "resolu.h"
14 #ifdef _WIN32
15 #undef ftello
16 #define ftello ftell
17 #undef ssize_t
18 #define ssize_t size_t
19 #else
20 #include <sys/mman.h>
21 #endif
22
23 #ifdef getc_unlocked /* avoid horrendous overhead of flockfile */
24 #undef getc
25 #undef putc
26 #define getc getc_unlocked
27 #define putc putc_unlocked
28 #endif
29
30 typedef struct {
31 void *base; /* pointer to base memory */
32 size_t len; /* allocated memory length */
33 int mapped; /* memory-mapped file? */
34 } MEMLOAD; /* file loaded/mapped into memory */
35
36 typedef struct {
37 int nw_rec; /* number of words per record */
38 int nrecs; /* number of records we found */
39 char *rec[1]; /* record array (extends struct) */
40 } RECINDEX;
41
42 int warnings = 1; /* report warnings? */
43
44 /* free loaded file */
45 static void
46 free_load(MEMLOAD *mp)
47 {
48 if (mp == NULL || (mp->base == NULL) | (mp->len <= 0))
49 return;
50 #ifdef MAP_FILE
51 if (mp->mapped)
52 munmap(mp->base, mp->len);
53 else
54 #endif
55 free(mp->base);
56 mp->base = NULL;
57 mp->len = 0;
58 }
59
60 /* load a file into memory */
61 static int
62 load_file(MEMLOAD *mp, FILE *fp)
63 {
64 int fd;
65 off_t skip, flen;
66
67 if (mp == NULL)
68 return(-1);
69 mp->base = NULL;
70 mp->len = 0;
71 mp->mapped = 0;
72 if (fp == NULL)
73 return(-1);
74 fd = fileno(fp);
75 skip = ftello(fp);
76 flen = lseek(fd, 0, SEEK_END);
77 if (flen <= skip)
78 return((int)(flen - skip));
79 mp->len = (size_t)(flen - skip);
80 #ifdef MAP_FILE
81 if (mp->len > 1L<<20) { /* map file if > 1 MByte */
82 mp->base = mmap(NULL, mp->len, PROT_READ, MAP_PRIVATE, fd, skip);
83 if (mp->base != MAP_FAILED) {
84 mp->mapped = 1;
85 return(1); /* mmap() success */
86 }
87 mp->base = NULL; /* fall back to reading it in... */
88 }
89 #endif
90 if (lseek(fd, skip, SEEK_SET) != skip ||
91 (mp->base = malloc(mp->len)) == NULL) {
92 mp->len = 0;
93 return(-1);
94 }
95 if (read(fd, (char *)mp->base, mp->len) != mp->len) {
96 free_load(mp);
97 return(-1);
98 }
99 return(1);
100 }
101
102 /* load memory from an input stream, starting from current position */
103 static int
104 load_stream(MEMLOAD *mp, FILE *fp)
105 {
106 size_t alloced = 0;
107 char buf[8192];
108 size_t nr;
109
110 if (mp == NULL)
111 return(-1);
112 mp->base = NULL;
113 mp->len = 0;
114 mp->mapped = 0;
115 if (fp == NULL)
116 return(-1);
117 while ((nr = fread(buf, 1, sizeof(buf), fp)) > 0) {
118 if (!alloced)
119 mp->base = malloc(nr);
120 else if (mp->len+nr > alloced)
121 mp->base = realloc(mp->base,
122 alloced = alloced*(2+(nr==sizeof(buf)))/2+nr);
123 if (mp->base == NULL)
124 return(-1);
125 memcpy((char *)mp->base + mp->len, buf, nr);
126 mp->len += nr;
127 }
128 if (ferror(fp)) {
129 free_load(mp);
130 return(-1);
131 }
132 if (alloced > mp->len*5/4) /* don't waste too much space */
133 mp->base = realloc(mp->base, mp->len);
134 return(mp->len > 0);
135 }
136
137 /* free a record index */
138 #define free_records(rp) free(rp)
139
140 /* compute record index */
141 static RECINDEX *
142 index_records(const MEMLOAD *mp, int nw_rec)
143 {
144 RECINDEX *rp;
145 char *cp, *mend;
146 int n;
147
148 if (mp == NULL || (mp->base == NULL) | (mp->len <= 0))
149 return(NULL);
150 if (nw_rec <= 0)
151 return(NULL);
152 rp = (RECINDEX *)malloc(sizeof(RECINDEX) + mp->len/(2*nw_rec)*sizeof(char *));
153 if (rp == NULL)
154 return(NULL);
155 rp->nw_rec = nw_rec;
156 rp->nrecs = 0;
157 cp = (char *)mp->base;
158 mend = cp + mp->len;
159 for ( ; ; ) { /* whitespace-separated words */
160 while (cp < mend && !*cp | isspace(*cp))
161 ++cp;
162 if (cp >= mend)
163 break;
164 rp->rec[rp->nrecs++] = cp; /* point to first non-white */
165 n = rp->nw_rec;
166 while (++cp < mend) /* find end of record */
167 if (!*cp | isspace(*cp)) {
168 if (--n <= 0)
169 break; /* got requisite # words */
170 do { /* else find next word */
171 if (*cp == '\n') {
172 fprintf(stderr,
173 "Unexpected EOL in record!\n");
174 free_records(rp);
175 return(NULL);
176 }
177 if (++cp >= mend)
178 break;
179 } while (!*cp | isspace(*cp));
180 }
181 }
182 rp->rec[rp->nrecs] = mend; /* reallocate to save space */
183 rp = (RECINDEX *)realloc(rp,
184 sizeof(RECINDEX) + rp->nrecs*sizeof(char *));
185 return(rp);
186 }
187
188 /* count number of columns based on first EOL */
189 static int
190 count_columns(const RECINDEX *rp)
191 {
192 char *cp = rp->rec[0];
193 char *mend = rp->rec[rp->nrecs];
194 int i;
195
196 while (*cp != '\n')
197 if (++cp >= mend)
198 return(0);
199 for (i = 0; i < rp->nrecs; i++)
200 if (rp->rec[i] >= cp)
201 break;
202 return(i);
203 }
204
205 /* copy nth record from index to stdout */
206 static int
207 print_record(const RECINDEX *rp, int n)
208 {
209 int words2go = rp->nw_rec;
210 char *scp;
211
212 if ((n < 0) | (n >= rp->nrecs))
213 return(0);
214 scp = rp->rec[n];
215 do {
216 putc(*scp++, stdout);
217 if (!*scp | isspace(*scp)) {
218 if (--words2go <= 0)
219 break;
220 putc(' ', stdout); /* single space btwn. words */
221 do
222 if (++scp >= rp->rec[n+1])
223 break;
224 while (!*scp | isspace(*scp));
225 }
226 } while (scp < rp->rec[n+1]);
227 /* caller adds record sep. */
228 return(1);
229 }
230
231 /* copy a stream to stdout */
232 static int
233 output_stream(FILE *fp)
234 {
235 char buf[8192];
236 ssize_t n;
237
238 if (fp == NULL)
239 return(0);
240 fflush(stdout);
241 while ((n = fread(buf, 1, sizeof(buf), fp)) > 0)
242 if (write(fileno(stdout), buf, n) != n)
243 return(0);
244 return(!ferror(fp));
245 }
246
247 /* get next word from stream, leaving stream on EOL or start of next word */
248 static char *
249 fget_word(char buf[256], FILE *fp)
250 {
251 int c;
252 char *cp;
253 /* skip nul's and white space */
254 while (!(c = getc(fp)) || isspace(c))
255 ;
256 if (c == EOF)
257 return(NULL);
258 cp = buf;
259 do
260 *cp++ = c;
261 while ((c = getc(fp)) != EOF && !isspace(c) && cp < buf+255);
262 *cp = '\0';
263 while (isspace(c) & (c != '\n'))
264 c = getc(fp);
265 if (c != EOF)
266 ungetc(c, fp);
267 return(buf);
268 }
269
270 char *fmtid = NULL; /* format id */
271 int comp_size = 0; /* binary bytes/channel */
272 int n_comp = 0; /* components/record */
273 int ni_columns = 0; /* number of input columns */
274 int ni_rows = 0; /* number of input rows */
275 int no_columns = 0; /* number of output columns */
276 int no_rows = 0; /* number of output rows */
277
278 /* check settings and assign defaults */
279 static int
280 check_sizes()
281 {
282 if (fmtid == NULL) {
283 fmtid = "ascii";
284 } else if (!comp_size) {
285 if (!strcmp(fmtid, "float"))
286 comp_size = sizeof(float);
287 else if (!strcmp(fmtid, "double"))
288 comp_size = sizeof(double);
289 else if (!strcmp(fmtid, "byte"))
290 comp_size = 1;
291 else if (strcmp(fmtid, "ascii")) {
292 fprintf(stderr, "Unsupported format: %s\n", fmtid);
293 return(0);
294 }
295 }
296 if (n_comp <= 0)
297 n_comp = 3;
298 return(1);
299 }
300
301 /* output transposed ASCII or binary data from memory */
302 static int
303 do_transpose(const MEMLOAD *mp)
304 {
305 static const char tabEOL[2] = {'\t','\n'};
306 RECINDEX *rp = NULL;
307 long nrecords;
308 int i, j;
309 /* propogate sizes */
310 if (ni_rows <= 0)
311 ni_rows = no_columns;
312 if (ni_columns <= 0)
313 ni_columns = no_rows;
314 /* get # records (& index) */
315 if (!comp_size) {
316 if ((rp = index_records(mp, n_comp)) == NULL)
317 return(0);
318 if (ni_columns <= 0)
319 ni_columns = count_columns(rp);
320 nrecords = rp->nrecs;
321 } else if ((ni_rows > 0) & (ni_columns > 0)) {
322 nrecords = ni_rows*ni_columns;
323 if (nrecords > mp->len/(n_comp*comp_size)) {
324 fprintf(stderr,
325 "Input too small for specified size and type\n");
326 return(0);
327 }
328 } else
329 nrecords = mp->len/(n_comp*comp_size);
330 /* check sizes */
331 if ((ni_rows <= 0) & (ni_columns > 0))
332 ni_rows = nrecords/ni_columns;
333 if ((ni_columns <= 0) & (ni_rows > 0))
334 ni_columns = nrecords/ni_rows;
335 if (nrecords != ni_rows*ni_columns)
336 goto badspec;
337 if (no_columns <= 0)
338 no_columns = ni_rows;
339 if (no_rows <= 0)
340 no_rows = ni_columns;
341 if ((no_rows != ni_columns) | (no_columns != ni_rows))
342 goto badspec;
343 /* transpose records */
344 for (i = 0; i < no_rows; i++) {
345 for (j = 0; j < no_columns; j++)
346 if (rp != NULL) { /* ASCII output */
347 print_record(rp, j*ni_columns + i);
348 putc(tabEOL[j >= no_columns-1], stdout);
349 } else { /* binary output */
350 fwrite((char *)mp->base +
351 (n_comp*comp_size)*(j*ni_columns + i),
352 n_comp*comp_size, 1, stdout);
353 }
354 if (ferror(stdout)) {
355 fprintf(stderr, "Error writing to stdout\n");
356 return(0);
357 }
358 }
359 if (rp != NULL)
360 free_records(rp);
361 return(1);
362 badspec:
363 fprintf(stderr, "Bad transpose specification -- check dimension(s)\n");
364 return(0);
365 }
366
367 /* resize ASCII stream input by ignoring EOLs between records */
368 static int
369 do_resize(FILE *fp)
370 {
371 long records2go = ni_rows*ni_columns;
372 int columns2go = no_columns;
373 char word[256];
374 /* sanity checks */
375 if (comp_size)
376 return(output_stream(fp)); /* binary data -- just copy */
377 if (no_columns <= 0) {
378 fprintf(stderr, "Missing -oc specification\n");
379 return(0);
380 }
381 if ((records2go <= 0) & (no_rows > 0))
382 records2go = no_rows*no_columns;
383 else if (no_rows*no_columns != records2go) {
384 fprintf(stderr,
385 "Input and output data sizes disagree (%dx%d != %dx%d)\n",
386 ni_rows, ni_columns, no_rows, no_columns);
387 return(0);
388 }
389 do { /* reshape records */
390 int n;
391
392 for (n = n_comp; n--; ) {
393 if (fget_word(word, fp) == NULL) {
394 if (records2go > 0 || n < n_comp-1)
395 break;
396 goto done; /* normal EOD */
397 }
398 fputs(word, stdout);
399 if (n) { /* mid-record? */
400 int c = getc(fp);
401 if ((c == '\n') | (c == EOF))
402 break;
403 ungetc(c, fp);
404 putc(' ', stdout);
405 }
406 }
407 if (n >= 0) {
408 fprintf(stderr, "Incomplete record / unexpected EOF\n");
409 return(0);
410 }
411 if (--columns2go <= 0) { /* time to end output row? */
412 putc('\n', stdout);
413 columns2go = no_columns;
414 } else /* else separate records */
415 putc('\t', stdout);
416 } while (--records2go); /* expected EOD? */
417 done:
418 if (warnings && columns2go != no_columns)
419 fprintf(stderr, "Warning -- incomplete final row\n");
420 if (warnings && fget_word(word, fp) != NULL)
421 fprintf(stderr, "Warning -- characters beyond expected EOD\n");
422 return(1);
423 }
424
425 /* process a header line and copy to stdout */
426 static int
427 headline(char *s, void *p)
428 {
429 static char fmt[32];
430 int n;
431
432 if (formatval(fmt, s)) {
433 if (fmtid == NULL) {
434 fmtid = fmt;
435 return(0);
436 }
437 if (!strcmp(fmt, fmtid))
438 return(0);
439 fprintf(stderr, "Input format '%s' != '%s'\n", fmt, fmtid);
440 return(-1);
441 }
442 if (!strncmp(s, "NROWS=", 6)) {
443 n = atoi(s+6);
444 if ((ni_rows > 0) & (n != ni_rows)) {
445 fputs("Incorrect input row count\n", stderr);
446 return(-1);
447 }
448 ni_rows = n;
449 return(0);
450 }
451 if (!strncmp(s, "NCOLS=", 6)) {
452 n = atoi(s+6);
453 if ((ni_columns > 0) & (n != ni_columns)) {
454 fputs("Incorrect input column count\n", stderr);
455 return(-1);
456 }
457 ni_columns = n;
458 return(0);
459 }
460 if (!strncmp(s, "NCOMP=", 6)) {
461 n = atoi(s+6);
462 if ((n_comp > 0) & (n != n_comp)) {
463 fputs("Incorrect number of components\n", stderr);
464 return(-1);
465 }
466 n_comp = n;
467 return(0);
468 }
469 fputs(s, stdout); /* copy header info. */
470 return(0);
471 }
472
473 /* main routine for converting rows/columns in data file */
474 int
475 main(int argc, char *argv[])
476 {
477 int i_header = 1; /* input header? */
478 int o_header = 1; /* output header? */
479 int transpose = 0; /* transpose rows & cols? */
480 int a;
481
482 for (a = 1; a < argc && argv[a][0] == '-'; a++)
483 switch (argv[a][1]) {
484 case 'i': /* input */
485 if (argv[a][2] == 'c') /* columns */
486 ni_columns = atoi(argv[++a]);
487 else if (argv[a][2] == 'r')
488 ni_rows = atoi(argv[++a]);
489 else
490 goto userr;
491 break;
492 case 'o': /* output */
493 if (argv[a][2] == 'c') /* columns */
494 no_columns = atoi(argv[++a]);
495 else if (argv[a][2] == 'r')
496 no_rows = atoi(argv[++a]);
497 else
498 goto userr;
499 break;
500 case 'h': /* turn off header */
501 switch (argv[a][2]) {
502 case 'i':
503 i_header = 0;
504 break;
505 case 'o':
506 o_header = 0;
507 break;
508 case '\0':
509 i_header = o_header = 0;
510 break;
511 default:
512 goto userr;
513 }
514 break;
515 case 't': /* transpose on/off */
516 transpose = !transpose;
517 break;
518 case 'f': /* format */
519 switch (argv[a][2]) {
520 case 'a': /* ASCII */
521 case 'A':
522 fmtid = "ascii";
523 comp_size = 0;
524 break;
525 case 'f': /* float */
526 case 'F':
527 fmtid = "float";
528 comp_size = sizeof(float);
529 break;
530 case 'd': /* double */
531 case 'D':
532 fmtid = "double";
533 comp_size = sizeof(double);
534 break;
535 case 'b': /* binary (bytes) */
536 case 'B':
537 fmtid = "byte";
538 comp_size = 1;
539 break;
540 default:
541 goto userr;
542 }
543 if (argv[a][3]) {
544 if (!isdigit(argv[a][3]))
545 goto userr;
546 n_comp = atoi(argv[a]+3);
547 } else
548 n_comp = 1;
549 break;
550 case 'w': /* warnings on/off */
551 warnings = !warnings;
552 break;
553 default:
554 goto userr;
555 }
556 if (a < argc-1) /* arg count OK? */
557 goto userr;
558 /* open input file? */
559 if (a == argc-1 && freopen(argv[a], "r", stdin) == NULL) {
560 fprintf(stderr, "%s: cannot open for reading\n", argv[a]);
561 return(1);
562 }
563 if (comp_size) {
564 SET_FILE_BINARY(stdin);
565 SET_FILE_BINARY(stdout);
566 }
567 /* check for no-op */
568 if (!transpose & (i_header == o_header) && (comp_size ||
569 (no_columns == ni_columns) & (no_rows == ni_rows))) {
570 if (warnings)
571 fprintf(stderr, "%s: no-op -- copying input verbatim\n",
572 argv[0]);
573 if (!output_stream(stdin))
574 return(1);
575 return(0);
576 }
577 if (i_header) { /* read header */
578 if (getheader(stdin, headline, NULL) < 0)
579 return(1);
580 if (!check_sizes())
581 return(1);
582 if (comp_size) { /* a little late... */
583 SET_FILE_BINARY(stdin);
584 SET_FILE_BINARY(stdout);
585 }
586 } else if (!check_sizes())
587 return(1);
588 if (o_header) { /* write header */
589 printargs(a, argv, stdout);
590 if (transpose && (no_rows <= 0) & (no_columns <= 0)) {
591 if (ni_rows > 0) no_columns = ni_rows;
592 if (ni_columns > 0) no_rows = ni_columns;
593 }
594 if (no_rows > 0)
595 printf("NROWS=%d\n", no_rows);
596 if (no_columns > 0)
597 printf("NCOLS=%d\n", no_columns);
598 printf("NCOMP=%d\n", n_comp);
599 fputformat(fmtid, stdout);
600 fputc('\n', stdout); /* finish new header */
601 }
602 if (transpose) { /* transposing rows & columns? */
603 MEMLOAD myMem; /* need to load into memory */
604 if (a == argc-1) {
605 if (load_file(&myMem, stdin) <= 0) {
606 fprintf(stderr, "%s: error loading file into memory\n",
607 argv[a]);
608 return(1);
609 }
610 } else if (load_stream(&myMem, stdin) <= 0) {
611 fprintf(stderr, "%s: error loading stdin into memory\n",
612 argv[0]);
613 return(1);
614 }
615 if (!do_transpose(&myMem))
616 return(1);
617 /* free_load(&myMem); */
618 } else if (!do_resize(stdin)) /* just reshaping input */
619 return(1);
620 return(0);
621 userr:
622 fprintf(stderr,
623 "Usage: %s [-h[io]][-w][-f[afdb][N]][-t][-ic in_col][-ir in_row][-oc out_col][-or out_row] [input.dat]\n",
624 argv[0]);
625 return(1);
626 }