1 : /*
2 : * NOTE: If you change this file, please merge it into rsync, samba, etc.
3 : */
4 :
5 : /*
6 : * Copyright Patrick Powell 1995
7 : * This code is based on code written by Patrick Powell (papowell@astart.com)
8 : * It may be used for any purpose as long as this notice remains intact
9 : * on all source code distributions
10 : */
11 :
12 : /**************************************************************
13 : * Original:
14 : * Patrick Powell Tue Apr 11 09:48:21 PDT 1995
15 : * A bombproof version of doprnt (dopr) included.
16 : * Sigh. This sort of thing is always nasty do deal with. Note that
17 : * the version here does not include floating point...
18 : *
19 : * snprintf() is used instead of sprintf() as it does limit checks
20 : * for string length. This covers a nasty loophole.
21 : *
22 : * The other functions are there to prevent NULL pointers from
23 : * causing nast effects.
24 : *
25 : * More Recently:
26 : * Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43
27 : * This was ugly. It is still ugly. I opted out of floating point
28 : * numbers, but the formatter understands just about everything
29 : * from the normal C string format, at least as far as I can tell from
30 : * the Solaris 2.5 printf(3S) man page.
31 : *
32 : * Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1
33 : * Ok, added some minimal floating point support, which means this
34 : * probably requires libm on most operating systems. Don't yet
35 : * support the exponent (e,E) and sigfig (g,G). Also, fmtint()
36 : * was pretty badly broken, it just wasn't being exercised in ways
37 : * which showed it, so that's been fixed. Also, formated the code
38 : * to mutt conventions, and removed dead code left over from the
39 : * original. Also, there is now a builtin-test, just compile with:
40 : * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm
41 : * and run snprintf for results.
42 : *
43 : * Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i
44 : * The PGP code was using unsigned hexadecimal formats.
45 : * Unfortunately, unsigned formats simply didn't work.
46 : *
47 : * Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8
48 : * The original code assumed that both snprintf() and vsnprintf() were
49 : * missing. Some systems only have snprintf() but not vsnprintf(), so
50 : * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
51 : *
52 : * Andrew Tridgell (tridge@samba.org) Oct 1998
53 : * fixed handling of %.0f
54 : * added test for HAVE_LONG_DOUBLE
55 : *
56 : * tridge@samba.org, idra@samba.org, April 2001
57 : * got rid of fcvt code (twas buggy and made testing harder)
58 : * added C99 semantics
59 : *
60 : * date: 2002/12/19 19:56:31; author: herb; state: Exp; lines: +2 -0
61 : * actually print args for %g and %e
62 : *
63 : * date: 2002/06/03 13:37:52; author: jmcd; state: Exp; lines: +8 -0
64 : * Since includes.h isn't included here, VA_COPY has to be defined here. I don't
65 : * see any include file that is guaranteed to be here, so I'm defining it
66 : * locally. Fixes AIX and Solaris builds.
67 : *
68 : * date: 2002/06/03 03:07:24; author: tridge; state: Exp; lines: +5 -13
69 : * put the ifdef for HAVE_VA_COPY in one place rather than in lots of
70 : * functions
71 : *
72 : * date: 2002/05/17 14:51:22; author: jmcd; state: Exp; lines: +21 -4
73 : * Fix usage of va_list passed as an arg. Use __va_copy before using it
74 : * when it exists.
75 : *
76 : * date: 2002/04/16 22:38:04; author: idra; state: Exp; lines: +20 -14
77 : * Fix incorrect zpadlen handling in fmtfp.
78 : * Thanks to Ollie Oldham <ollie.oldham@metro-optix.com> for spotting it.
79 : * few mods to make it easier to compile the tests.
80 : * addedd the "Ollie" test to the floating point ones.
81 : *
82 : * Martin Pool (mbp@samba.org) April 2003
83 : * Remove NO_CONFIG_H so that the test case can be built within a source
84 : * tree with less trouble.
85 : * Remove unnecessary SAFE_FREE() definition.
86 : *
87 : * Martin Pool (mbp@samba.org) May 2003
88 : * Put in a prototype for dummy_snprintf() to quiet compiler warnings.
89 : *
90 : * Move #endif to make sure VA_COPY, LDOUBLE, etc are defined even
91 : * if the C library has some snprintf functions already.
92 : *
93 : * Darren Tucker (dtucker@zip.com.au) 2005
94 : * Fix bug allowing read overruns of the source string with "%.*s"
95 : * Usually harmless unless the read runs outside the process' allocation
96 : * (eg if your malloc does guard pages) in which case it will segfault.
97 : * From OpenSSH. Also added test for same.
98 : *
99 : * Simo Sorce (idra@samba.org) Jan 2006
100 : *
101 : * Add support for position independent parameters
102 : * fix fmtstr now it conforms to sprintf wrt min.max
103 : *
104 : **************************************************************/
105 :
106 : #include "replace.h"
107 : #include "system/locale.h"
108 :
109 : #ifdef TEST_SNPRINTF /* need math library headers for testing */
110 :
111 : /* In test mode, we pretend that this system doesn't have any snprintf
112 : * functions, regardless of what config.h says. */
113 : # undef HAVE_SNPRINTF
114 : # undef HAVE_VSNPRINTF
115 : # undef HAVE_C99_VSNPRINTF
116 : # undef HAVE_ASPRINTF
117 : # undef HAVE_VASPRINTF
118 : # include <math.h>
119 : #endif /* TEST_SNPRINTF */
120 :
121 : #if defined(HAVE_SNPRINTF) && defined(HAVE_VSNPRINTF) && defined(HAVE_C99_VSNPRINTF)
122 : /* only include stdio.h if we are not re-defining snprintf or vsnprintf */
123 : #include <stdio.h>
124 : /* make the compiler happy with an empty file */
125 : void dummy_snprintf(void);
126 0 : void dummy_snprintf(void) {}
127 : #endif /* HAVE_SNPRINTF, etc */
128 :
129 : /* yes this really must be a ||. Don't muck with this (tridge) */
130 : #if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
131 :
132 : #ifdef HAVE_LONG_DOUBLE
133 : #define LDOUBLE long double
134 : #else
135 : #define LDOUBLE double
136 : #endif
137 :
138 : #ifdef HAVE_LONG_LONG
139 : #define LLONG long long
140 : #else
141 : #define LLONG long
142 : #endif
143 :
144 : #ifndef VA_COPY
145 : #ifdef HAVE_VA_COPY
146 : #define VA_COPY(dest, src) va_copy(dest, src)
147 : #else
148 : #ifdef HAVE___VA_COPY
149 : #define VA_COPY(dest, src) __va_copy(dest, src)
150 : #else
151 : #define VA_COPY(dest, src) (dest) = (src)
152 : #endif
153 : #endif
154 :
155 : /*
156 : * dopr(): poor man's version of doprintf
157 : */
158 :
159 : /* format read states */
160 : #define DP_S_DEFAULT 0
161 : #define DP_S_FLAGS 1
162 : #define DP_S_MIN 2
163 : #define DP_S_DOT 3
164 : #define DP_S_MAX 4
165 : #define DP_S_MOD 5
166 : #define DP_S_CONV 6
167 : #define DP_S_DONE 7
168 :
169 : /* format flags - Bits */
170 : #define DP_F_MINUS (1 << 0)
171 : #define DP_F_PLUS (1 << 1)
172 : #define DP_F_SPACE (1 << 2)
173 : #define DP_F_NUM (1 << 3)
174 : #define DP_F_ZERO (1 << 4)
175 : #define DP_F_UP (1 << 5)
176 : #define DP_F_UNSIGNED (1 << 6)
177 :
178 : /* Conversion Flags */
179 : #define DP_C_CHAR 1
180 : #define DP_C_SHORT 2
181 : #define DP_C_LONG 3
182 : #define DP_C_LDOUBLE 4
183 : #define DP_C_LLONG 5
184 : #define DP_C_SIZET 6
185 :
186 : /* Chunk types */
187 : #define CNK_FMT_STR 0
188 : #define CNK_INT 1
189 : #define CNK_OCTAL 2
190 : #define CNK_UINT 3
191 : #define CNK_HEX 4
192 : #define CNK_FLOAT 5
193 : #define CNK_CHAR 6
194 : #define CNK_STRING 7
195 : #define CNK_PTR 8
196 : #define CNK_NUM 9
197 : #define CNK_PRCNT 10
198 :
199 : #define char_to_int(p) ((p)- '0')
200 : #ifndef MAX
201 : #define MAX(p,q) (((p) >= (q)) ? (p) : (q))
202 : #endif
203 :
204 : struct pr_chunk {
205 : int type; /* chunk type */
206 : int num; /* parameter number */
207 : int min;
208 : int max;
209 : int flags;
210 : int cflags;
211 : int start;
212 : int len;
213 : LLONG value;
214 : LDOUBLE fvalue;
215 : char *strvalue;
216 : void *pnum;
217 : struct pr_chunk *min_star;
218 : struct pr_chunk *max_star;
219 : struct pr_chunk *next;
220 : };
221 :
222 : struct pr_chunk_x {
223 : struct pr_chunk **chunks;
224 : int num;
225 : };
226 :
227 : static int dopr(char *buffer, size_t maxlen, const char *format,
228 : va_list args_in);
229 : static void fmtstr(char *buffer, size_t *currlen, size_t maxlen,
230 : char *value, int flags, int min, int max);
231 : static void fmtint(char *buffer, size_t *currlen, size_t maxlen,
232 : LLONG value, int base, int min, int max, int flags);
233 : static void fmtfp(char *buffer, size_t *currlen, size_t maxlen,
234 : LDOUBLE fvalue, int min, int max, int flags);
235 : static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c);
236 : static struct pr_chunk *new_chunk(void);
237 : static int add_cnk_list_entry(struct pr_chunk_x **list,
238 : int max_num, struct pr_chunk *chunk);
239 :
240 : static int dopr(char *buffer, size_t maxlen, const char *format, va_list args_in)
241 : {
242 : char ch;
243 : int state;
244 : int pflag;
245 : int pnum;
246 : int pfirst;
247 : size_t currlen;
248 : va_list args;
249 : const char *base;
250 : struct pr_chunk *chunks = NULL;
251 : struct pr_chunk *cnk = NULL;
252 : struct pr_chunk_x *clist = NULL;
253 : int max_pos;
254 : int ret = -1;
255 :
256 : VA_COPY(args, args_in);
257 :
258 : state = DP_S_DEFAULT;
259 : pfirst = 1;
260 : pflag = 0;
261 : pnum = 0;
262 :
263 : max_pos = 0;
264 : base = format;
265 : ch = *format++;
266 :
267 : /* retrieve the string structure as chunks */
268 : while (state != DP_S_DONE) {
269 : if (ch == '\0')
270 : state = DP_S_DONE;
271 :
272 : switch(state) {
273 : case DP_S_DEFAULT:
274 :
275 : if (cnk) {
276 : cnk->next = new_chunk();
277 : cnk = cnk->next;
278 : } else {
279 : cnk = new_chunk();
280 : }
281 : if (!cnk) goto done;
282 : if (!chunks) chunks = cnk;
283 :
284 : if (ch == '%') {
285 : state = DP_S_FLAGS;
286 : ch = *format++;
287 : } else {
288 : cnk->type = CNK_FMT_STR;
289 : cnk->start = format - base -1;
290 : while ((ch != '\0') && (ch != '%')) ch = *format++;
291 : cnk->len = format - base - cnk->start -1;
292 : }
293 : break;
294 : case DP_S_FLAGS:
295 : switch (ch) {
296 : case '-':
297 : cnk->flags |= DP_F_MINUS;
298 : ch = *format++;
299 : break;
300 : case '+':
301 : cnk->flags |= DP_F_PLUS;
302 : ch = *format++;
303 : break;
304 : case ' ':
305 : cnk->flags |= DP_F_SPACE;
306 : ch = *format++;
307 : break;
308 : case '#':
309 : cnk->flags |= DP_F_NUM;
310 : ch = *format++;
311 : break;
312 : case '0':
313 : cnk->flags |= DP_F_ZERO;
314 : ch = *format++;
315 : break;
316 : case 'I':
317 : /* internationalization not supported yet */
318 : ch = *format++;
319 : break;
320 : default:
321 : state = DP_S_MIN;
322 : break;
323 : }
324 : break;
325 : case DP_S_MIN:
326 : if (isdigit((unsigned char)ch)) {
327 : cnk->min = 10 * cnk->min + char_to_int (ch);
328 : ch = *format++;
329 : } else if (ch == '$') {
330 : if (!pfirst && !pflag) {
331 : /* parameters must be all positioned or none */
332 : goto done;
333 : }
334 : if (pfirst) {
335 : pfirst = 0;
336 : pflag = 1;
337 : }
338 : if (cnk->min == 0) /* what ?? */
339 : goto done;
340 : cnk->num = cnk->min;
341 : cnk->min = 0;
342 : ch = *format++;
343 : } else if (ch == '*') {
344 : if (pfirst) pfirst = 0;
345 : cnk->min_star = new_chunk();
346 : if (!cnk->min_star) /* out of memory :-( */
347 : goto done;
348 : cnk->min_star->type = CNK_INT;
349 : if (pflag) {
350 : int num;
351 : ch = *format++;
352 : if (!isdigit((unsigned char)ch)) {
353 : /* parameters must be all positioned or none */
354 : goto done;
355 : }
356 : for (num = 0; isdigit((unsigned char)ch); ch = *format++) {
357 : num = 10 * num + char_to_int(ch);
358 : }
359 : cnk->min_star->num = num;
360 : if (ch != '$') /* what ?? */
361 : goto done;
362 : } else {
363 : cnk->min_star->num = ++pnum;
364 : }
365 : max_pos = add_cnk_list_entry(&clist, max_pos, cnk->min_star);
366 : if (max_pos == 0) /* out of memory :-( */
367 : goto done;
368 : ch = *format++;
369 : state = DP_S_DOT;
370 : } else {
371 : if (pfirst) pfirst = 0;
372 : state = DP_S_DOT;
373 : }
374 : break;
375 : case DP_S_DOT:
376 : if (ch == '.') {
377 : state = DP_S_MAX;
378 : ch = *format++;
379 : } else {
380 : state = DP_S_MOD;
381 : }
382 : break;
383 : case DP_S_MAX:
384 : if (isdigit((unsigned char)ch)) {
385 : if (cnk->max < 0)
386 : cnk->max = 0;
387 : cnk->max = 10 * cnk->max + char_to_int (ch);
388 : ch = *format++;
389 : } else if (ch == '$') {
390 : if (!pfirst && !pflag) {
391 : /* parameters must be all positioned or none */
392 : goto done;
393 : }
394 : if (cnk->max <= 0) /* what ?? */
395 : goto done;
396 : cnk->num = cnk->max;
397 : cnk->max = -1;
398 : ch = *format++;
399 : } else if (ch == '*') {
400 : cnk->max_star = new_chunk();
401 : if (!cnk->max_star) /* out of memory :-( */
402 : goto done;
403 : cnk->max_star->type = CNK_INT;
404 : if (pflag) {
405 : int num;
406 : ch = *format++;
407 : if (!isdigit((unsigned char)ch)) {
408 : /* parameters must be all positioned or none */
409 : goto done;
410 : }
411 : for (num = 0; isdigit((unsigned char)ch); ch = *format++) {
412 : num = 10 * num + char_to_int(ch);
413 : }
414 : cnk->max_star->num = num;
415 : if (ch != '$') /* what ?? */
416 : goto done;
417 : } else {
418 : cnk->max_star->num = ++pnum;
419 : }
420 : max_pos = add_cnk_list_entry(&clist, max_pos, cnk->max_star);
421 : if (max_pos == 0) /* out of memory :-( */
422 : goto done;
423 :
424 : ch = *format++;
425 : state = DP_S_MOD;
426 : } else {
427 : state = DP_S_MOD;
428 : }
429 : break;
430 : case DP_S_MOD:
431 : switch (ch) {
432 : case 'h':
433 : cnk->cflags = DP_C_SHORT;
434 : ch = *format++;
435 : if (ch == 'h') {
436 : cnk->cflags = DP_C_CHAR;
437 : ch = *format++;
438 : }
439 : break;
440 : case 'l':
441 : cnk->cflags = DP_C_LONG;
442 : ch = *format++;
443 : if (ch == 'l') { /* It's a long long */
444 : cnk->cflags = DP_C_LLONG;
445 : ch = *format++;
446 : }
447 : break;
448 : case 'L':
449 : cnk->cflags = DP_C_LDOUBLE;
450 : ch = *format++;
451 : break;
452 : case 'z':
453 : cnk->cflags = DP_C_SIZET;
454 : ch = *format++;
455 : break;
456 : default:
457 : break;
458 : }
459 : state = DP_S_CONV;
460 : break;
461 : case DP_S_CONV:
462 : if (cnk->num == 0) cnk->num = ++pnum;
463 : max_pos = add_cnk_list_entry(&clist, max_pos, cnk);
464 : if (max_pos == 0) /* out of memory :-( */
465 : goto done;
466 :
467 : switch (ch) {
468 : case 'd':
469 : case 'i':
470 : cnk->type = CNK_INT;
471 : break;
472 : case 'o':
473 : cnk->type = CNK_OCTAL;
474 : cnk->flags |= DP_F_UNSIGNED;
475 : break;
476 : case 'u':
477 : cnk->type = CNK_UINT;
478 : cnk->flags |= DP_F_UNSIGNED;
479 : break;
480 : case 'X':
481 : cnk->flags |= DP_F_UP;
482 : case 'x':
483 : cnk->type = CNK_HEX;
484 : cnk->flags |= DP_F_UNSIGNED;
485 : break;
486 : case 'A':
487 : /* hex float not supported yet */
488 : case 'E':
489 : case 'G':
490 : case 'F':
491 : cnk->flags |= DP_F_UP;
492 : case 'a':
493 : /* hex float not supported yet */
494 : case 'e':
495 : case 'f':
496 : case 'g':
497 : cnk->type = CNK_FLOAT;
498 : break;
499 : case 'c':
500 : cnk->type = CNK_CHAR;
501 : break;
502 : case 's':
503 : cnk->type = CNK_STRING;
504 : break;
505 : case 'p':
506 : cnk->type = CNK_PTR;
507 : cnk->flags |= DP_F_UNSIGNED;
508 : break;
509 : case 'n':
510 : cnk->type = CNK_NUM;
511 : break;
512 : case '%':
513 : cnk->type = CNK_PRCNT;
514 : break;
515 : default:
516 : /* Unknown, bail out*/
517 : goto done;
518 : }
519 : ch = *format++;
520 : state = DP_S_DEFAULT;
521 : break;
522 : case DP_S_DONE:
523 : break;
524 : default:
525 : /* hmm? */
526 : break; /* some picky compilers need this */
527 : }
528 : }
529 :
530 : /* retrieve the format arguments */
531 : for (pnum = 0; pnum < max_pos; pnum++) {
532 : int i;
533 :
534 : if (clist[pnum].num == 0) {
535 : /* ignoring a parameter should not be permitted
536 : * all parameters must be matched at least once
537 : * BUT seem some system ignore this rule ...
538 : * at least my glibc based system does --SSS
539 : */
540 : #ifdef DEBUG_SNPRINTF
541 : printf("parameter at position %d not used\n", pnum+1);
542 : #endif
543 : /* eat the parameter */
544 : va_arg (args, int);
545 : continue;
546 : }
547 : for (i = 1; i < clist[pnum].num; i++) {
548 : if (clist[pnum].chunks[0]->type != clist[pnum].chunks[i]->type) {
549 : /* nooo noo no!
550 : * all the references to a parameter
551 : * must be of the same type
552 : */
553 : goto done;
554 : }
555 : }
556 : cnk = clist[pnum].chunks[0];
557 : switch (cnk->type) {
558 : case CNK_INT:
559 : if (cnk->cflags == DP_C_SHORT)
560 : cnk->value = va_arg (args, int);
561 : else if (cnk->cflags == DP_C_LONG)
562 : cnk->value = va_arg (args, long int);
563 : else if (cnk->cflags == DP_C_LLONG)
564 : cnk->value = va_arg (args, LLONG);
565 : else if (cnk->cflags == DP_C_SIZET)
566 : cnk->value = va_arg (args, ssize_t);
567 : else
568 : cnk->value = va_arg (args, int);
569 :
570 : for (i = 1; i < clist[pnum].num; i++) {
571 : clist[pnum].chunks[i]->value = cnk->value;
572 : }
573 : break;
574 :
575 : case CNK_OCTAL:
576 : case CNK_UINT:
577 : case CNK_HEX:
578 : if (cnk->cflags == DP_C_SHORT)
579 : cnk->value = va_arg (args, unsigned int);
580 : else if (cnk->cflags == DP_C_LONG)
581 : cnk->value = (unsigned long int)va_arg (args, unsigned long int);
582 : else if (cnk->cflags == DP_C_LLONG)
583 : cnk->value = (LLONG)va_arg (args, unsigned LLONG);
584 : else if (cnk->cflags == DP_C_SIZET)
585 : cnk->value = (size_t)va_arg (args, size_t);
586 : else
587 : cnk->value = (unsigned int)va_arg (args, unsigned int);
588 :
589 : for (i = 1; i < clist[pnum].num; i++) {
590 : clist[pnum].chunks[i]->value = cnk->value;
591 : }
592 : break;
593 :
594 : case CNK_FLOAT:
595 : if (cnk->cflags == DP_C_LDOUBLE)
596 : cnk->fvalue = va_arg (args, LDOUBLE);
597 : else
598 : cnk->fvalue = va_arg (args, double);
599 :
600 : for (i = 1; i < clist[pnum].num; i++) {
601 : clist[pnum].chunks[i]->fvalue = cnk->fvalue;
602 : }
603 : break;
604 :
605 : case CNK_CHAR:
606 : cnk->value = va_arg (args, int);
607 :
608 : for (i = 1; i < clist[pnum].num; i++) {
609 : clist[pnum].chunks[i]->value = cnk->value;
610 : }
611 : break;
612 :
613 : case CNK_STRING:
614 : cnk->strvalue = va_arg (args, char *);
615 : if (!cnk->strvalue) cnk->strvalue = "(NULL)";
616 :
617 : for (i = 1; i < clist[pnum].num; i++) {
618 : clist[pnum].chunks[i]->strvalue = cnk->strvalue;
619 : }
620 : break;
621 :
622 : case CNK_PTR:
623 : cnk->strvalue = va_arg (args, void *);
624 : for (i = 1; i < clist[pnum].num; i++) {
625 : clist[pnum].chunks[i]->strvalue = cnk->strvalue;
626 : }
627 : break;
628 :
629 : case CNK_NUM:
630 : if (cnk->cflags == DP_C_CHAR)
631 : cnk->pnum = va_arg (args, char *);
632 : else if (cnk->cflags == DP_C_SHORT)
633 : cnk->pnum = va_arg (args, short int *);
634 : else if (cnk->cflags == DP_C_LONG)
635 : cnk->pnum = va_arg (args, long int *);
636 : else if (cnk->cflags == DP_C_LLONG)
637 : cnk->pnum = va_arg (args, LLONG *);
638 : else if (cnk->cflags == DP_C_SIZET)
639 : cnk->pnum = va_arg (args, ssize_t *);
640 : else
641 : cnk->pnum = va_arg (args, int *);
642 :
643 : for (i = 1; i < clist[pnum].num; i++) {
644 : clist[pnum].chunks[i]->pnum = cnk->pnum;
645 : }
646 : break;
647 :
648 : case CNK_PRCNT:
649 : break;
650 :
651 : default:
652 : /* what ?? */
653 : goto done;
654 : }
655 : }
656 : /* print out the actual string from chunks */
657 : currlen = 0;
658 : cnk = chunks;
659 : while (cnk) {
660 : int len, min, max;
661 :
662 : if (cnk->min_star) min = cnk->min_star->value;
663 : else min = cnk->min;
664 : if (cnk->max_star) max = cnk->max_star->value;
665 : else max = cnk->max;
666 :
667 : switch (cnk->type) {
668 :
669 : case CNK_FMT_STR:
670 : if (maxlen != 0 && maxlen > currlen) {
671 : if (maxlen > (currlen + cnk->len)) len = cnk->len;
672 : else len = maxlen - currlen;
673 :
674 : memcpy(&(buffer[currlen]), &(base[cnk->start]), len);
675 : }
676 : currlen += cnk->len;
677 :
678 : break;
679 :
680 : case CNK_INT:
681 : case CNK_UINT:
682 : fmtint (buffer, &currlen, maxlen, cnk->value, 10, min, max, cnk->flags);
683 : break;
684 :
685 : case CNK_OCTAL:
686 : fmtint (buffer, &currlen, maxlen, cnk->value, 8, min, max, cnk->flags);
687 : break;
688 :
689 : case CNK_HEX:
690 : fmtint (buffer, &currlen, maxlen, cnk->value, 16, min, max, cnk->flags);
691 : break;
692 :
693 : case CNK_FLOAT:
694 : fmtfp (buffer, &currlen, maxlen, cnk->fvalue, min, max, cnk->flags);
695 : break;
696 :
697 : case CNK_CHAR:
698 : dopr_outch (buffer, &currlen, maxlen, cnk->value);
699 : break;
700 :
701 : case CNK_STRING:
702 : if (max == -1) {
703 : max = strlen(cnk->strvalue);
704 : }
705 : fmtstr (buffer, &currlen, maxlen, cnk->strvalue, cnk->flags, min, max);
706 : break;
707 :
708 : case CNK_PTR:
709 : fmtint (buffer, &currlen, maxlen, (long)(cnk->strvalue), 16, min, max, cnk->flags);
710 : break;
711 :
712 : case CNK_NUM:
713 : if (cnk->cflags == DP_C_CHAR)
714 : *((char *)(cnk->pnum)) = (char)currlen;
715 : else if (cnk->cflags == DP_C_SHORT)
716 : *((short int *)(cnk->pnum)) = (short int)currlen;
717 : else if (cnk->cflags == DP_C_LONG)
718 : *((long int *)(cnk->pnum)) = (long int)currlen;
719 : else if (cnk->cflags == DP_C_LLONG)
720 : *((LLONG *)(cnk->pnum)) = (LLONG)currlen;
721 : else if (cnk->cflags == DP_C_SIZET)
722 : *((ssize_t *)(cnk->pnum)) = (ssize_t)currlen;
723 : else
724 : *((int *)(cnk->pnum)) = (int)currlen;
725 : break;
726 :
727 : case CNK_PRCNT:
728 : dopr_outch (buffer, &currlen, maxlen, '%');
729 : break;
730 :
731 : default:
732 : /* what ?? */
733 : goto done;
734 : }
735 : cnk = cnk->next;
736 : }
737 : if (maxlen != 0) {
738 : if (currlen < maxlen - 1)
739 : buffer[currlen] = '\0';
740 : else if (maxlen > 0)
741 : buffer[maxlen - 1] = '\0';
742 : }
743 : ret = currlen;
744 :
745 : done:
746 : va_end(args);
747 :
748 : while (chunks) {
749 : cnk = chunks->next;
750 : free(chunks);
751 : chunks = cnk;
752 : }
753 : if (clist) {
754 : for (pnum = 0; pnum < max_pos; pnum++) {
755 : if (clist[pnum].chunks) free(clist[pnum].chunks);
756 : }
757 : free(clist);
758 : }
759 : return ret;
760 : }
761 :
762 : static void fmtstr(char *buffer, size_t *currlen, size_t maxlen,
763 : char *value, int flags, int min, int max)
764 : {
765 : int padlen, strln; /* amount to pad */
766 : int cnt = 0;
767 :
768 : #ifdef DEBUG_SNPRINTF
769 : printf("fmtstr min=%d max=%d s=[%s]\n", min, max, value);
770 : #endif
771 : if (value == 0) {
772 : value = "<NULL>";
773 : }
774 :
775 : for (strln = 0; strln < max && value[strln]; ++strln); /* strlen */
776 : padlen = min - strln;
777 : if (padlen < 0)
778 : padlen = 0;
779 : if (flags & DP_F_MINUS)
780 : padlen = -padlen; /* Left Justify */
781 :
782 : while (padlen > 0) {
783 : dopr_outch (buffer, currlen, maxlen, ' ');
784 : --padlen;
785 : }
786 : while (*value && (cnt < max)) {
787 : dopr_outch (buffer, currlen, maxlen, *value++);
788 : ++cnt;
789 : }
790 : while (padlen < 0) {
791 : dopr_outch (buffer, currlen, maxlen, ' ');
792 : ++padlen;
793 : }
794 : }
795 :
796 : /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
797 :
798 : static void fmtint(char *buffer, size_t *currlen, size_t maxlen,
799 : LLONG value, int base, int min, int max, int flags)
800 : {
801 : int signvalue = 0;
802 : unsigned LLONG uvalue;
803 : char convert[20];
804 : int place = 0;
805 : int spadlen = 0; /* amount to space pad */
806 : int zpadlen = 0; /* amount to zero pad */
807 : int caps = 0;
808 :
809 : if (max < 0)
810 : max = 0;
811 :
812 : uvalue = value;
813 :
814 : if(!(flags & DP_F_UNSIGNED)) {
815 : if( value < 0 ) {
816 : signvalue = '-';
817 : uvalue = -value;
818 : } else {
819 : if (flags & DP_F_PLUS) /* Do a sign (+/i) */
820 : signvalue = '+';
821 : else if (flags & DP_F_SPACE)
822 : signvalue = ' ';
823 : }
824 : }
825 :
826 : if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
827 :
828 : do {
829 : convert[place++] =
830 : (caps? "0123456789ABCDEF":"0123456789abcdef")
831 : [uvalue % (unsigned)base ];
832 : uvalue = (uvalue / (unsigned)base );
833 : } while(uvalue && (place < 20));
834 : if (place == 20) place--;
835 : convert[place] = 0;
836 :
837 : zpadlen = max - place;
838 : spadlen = min - MAX (max, place) - (signvalue ? 1 : 0);
839 : if (zpadlen < 0) zpadlen = 0;
840 : if (spadlen < 0) spadlen = 0;
841 : if (flags & DP_F_ZERO) {
842 : zpadlen = MAX(zpadlen, spadlen);
843 : spadlen = 0;
844 : }
845 : if (flags & DP_F_MINUS)
846 : spadlen = -spadlen; /* Left Justifty */
847 :
848 : #ifdef DEBUG_SNPRINTF
849 : printf("zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
850 : zpadlen, spadlen, min, max, place);
851 : #endif
852 :
853 : /* Spaces */
854 : while (spadlen > 0) {
855 : dopr_outch (buffer, currlen, maxlen, ' ');
856 : --spadlen;
857 : }
858 :
859 : /* Sign */
860 : if (signvalue)
861 : dopr_outch (buffer, currlen, maxlen, signvalue);
862 :
863 : /* Zeros */
864 : if (zpadlen > 0) {
865 : while (zpadlen > 0) {
866 : dopr_outch (buffer, currlen, maxlen, '0');
867 : --zpadlen;
868 : }
869 : }
870 :
871 : /* Digits */
872 : while (place > 0)
873 : dopr_outch (buffer, currlen, maxlen, convert[--place]);
874 :
875 : /* Left Justified spaces */
876 : while (spadlen < 0) {
877 : dopr_outch (buffer, currlen, maxlen, ' ');
878 : ++spadlen;
879 : }
880 : }
881 :
882 : static LDOUBLE abs_val(LDOUBLE value)
883 : {
884 : LDOUBLE result = value;
885 :
886 : if (value < 0)
887 : result = -value;
888 :
889 : return result;
890 : }
891 :
892 : static LDOUBLE POW10(int exp)
893 : {
894 : LDOUBLE result = 1;
895 :
896 : while (exp) {
897 : result *= 10;
898 : exp--;
899 : }
900 :
901 : return result;
902 : }
903 :
904 : static LLONG ROUND(LDOUBLE value)
905 : {
906 : LLONG intpart;
907 :
908 : intpart = (LLONG)value;
909 : value = value - intpart;
910 : if (value >= 0.5) intpart++;
911 :
912 : return intpart;
913 : }
914 :
915 : /* a replacement for modf that doesn't need the math library. Should
916 : be portable, but slow */
917 : static double my_modf(double x0, double *iptr)
918 : {
919 : int i;
920 : LLONG l=0;
921 : double x = x0;
922 : double f = 1.0;
923 :
924 : for (i=0;i<100;i++) {
925 : l = (long)x;
926 : if (l <= (x+1) && l >= (x-1)) break;
927 : x *= 0.1;
928 : f *= 10.0;
929 : }
930 :
931 : if (i == 100) {
932 : /* yikes! the number is beyond what we can handle. What do we do? */
933 : (*iptr) = 0;
934 : return 0;
935 : }
936 :
937 : if (i != 0) {
938 : double i2;
939 : double ret;
940 :
941 : ret = my_modf(x0-l*f, &i2);
942 : (*iptr) = l*f + i2;
943 : return ret;
944 : }
945 :
946 : (*iptr) = l;
947 : return x - (*iptr);
948 : }
949 :
950 :
951 : static void fmtfp (char *buffer, size_t *currlen, size_t maxlen,
952 : LDOUBLE fvalue, int min, int max, int flags)
953 : {
954 : int signvalue = 0;
955 : double ufvalue;
956 : char iconvert[311];
957 : char fconvert[311];
958 : int iplace = 0;
959 : int fplace = 0;
960 : int padlen = 0; /* amount to pad */
961 : int zpadlen = 0;
962 : int caps = 0;
963 : int idx;
964 : double intpart;
965 : double fracpart;
966 : double temp;
967 :
968 : /*
969 : * AIX manpage says the default is 0, but Solaris says the default
970 : * is 6, and sprintf on AIX defaults to 6
971 : */
972 : if (max < 0)
973 : max = 6;
974 :
975 : ufvalue = abs_val (fvalue);
976 :
977 : if (fvalue < 0) {
978 : signvalue = '-';
979 : } else {
980 : if (flags & DP_F_PLUS) { /* Do a sign (+/i) */
981 : signvalue = '+';
982 : } else {
983 : if (flags & DP_F_SPACE)
984 : signvalue = ' ';
985 : }
986 : }
987 :
988 : #if 0
989 : if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
990 : #endif
991 :
992 : #if 0
993 : if (max == 0) ufvalue += 0.5; /* if max = 0 we must round */
994 : #endif
995 :
996 : /*
997 : * Sorry, we only support 9 digits past the decimal because of our
998 : * conversion method
999 : */
1000 : if (max > 9)
1001 : max = 9;
1002 :
1003 : /* We "cheat" by converting the fractional part to integer by
1004 : * multiplying by a factor of 10
1005 : */
1006 :
1007 : temp = ufvalue;
1008 : my_modf(temp, &intpart);
1009 :
1010 : fracpart = ROUND((POW10(max)) * (ufvalue - intpart));
1011 :
1012 : if (fracpart >= POW10(max)) {
1013 : intpart++;
1014 : fracpart -= POW10(max);
1015 : }
1016 :
1017 :
1018 : /* Convert integer part */
1019 : do {
1020 : temp = intpart*0.1;
1021 : my_modf(temp, &intpart);
1022 : idx = (int) ((temp -intpart +0.05)* 10.0);
1023 : /* idx = (int) (((double)(temp*0.1) -intpart +0.05) *10.0); */
1024 : /* printf ("%llf, %f, %x\n", temp, intpart, idx); */
1025 : iconvert[iplace++] =
1026 : (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
1027 : } while (intpart && (iplace < 311));
1028 : if (iplace == 311) iplace--;
1029 : iconvert[iplace] = 0;
1030 :
1031 : /* Convert fractional part */
1032 : if (fracpart)
1033 : {
1034 : do {
1035 : temp = fracpart*0.1;
1036 : my_modf(temp, &fracpart);
1037 : idx = (int) ((temp -fracpart +0.05)* 10.0);
1038 : /* idx = (int) ((((temp/10) -fracpart) +0.05) *10); */
1039 : /* printf ("%lf, %lf, %ld\n", temp, fracpart, idx ); */
1040 : fconvert[fplace++] =
1041 : (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
1042 : } while(fracpart && (fplace < 311));
1043 : if (fplace == 311) fplace--;
1044 : }
1045 : fconvert[fplace] = 0;
1046 :
1047 : /* -1 for decimal point, another -1 if we are printing a sign */
1048 : padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
1049 : zpadlen = max - fplace;
1050 : if (zpadlen < 0) zpadlen = 0;
1051 : if (padlen < 0)
1052 : padlen = 0;
1053 : if (flags & DP_F_MINUS)
1054 : padlen = -padlen; /* Left Justifty */
1055 :
1056 : if ((flags & DP_F_ZERO) && (padlen > 0)) {
1057 : if (signvalue) {
1058 : dopr_outch (buffer, currlen, maxlen, signvalue);
1059 : --padlen;
1060 : signvalue = 0;
1061 : }
1062 : while (padlen > 0) {
1063 : dopr_outch (buffer, currlen, maxlen, '0');
1064 : --padlen;
1065 : }
1066 : }
1067 : while (padlen > 0) {
1068 : dopr_outch (buffer, currlen, maxlen, ' ');
1069 : --padlen;
1070 : }
1071 : if (signvalue)
1072 : dopr_outch (buffer, currlen, maxlen, signvalue);
1073 :
1074 : while (iplace > 0)
1075 : dopr_outch (buffer, currlen, maxlen, iconvert[--iplace]);
1076 :
1077 : #ifdef DEBUG_SNPRINTF
1078 : printf("fmtfp: fplace=%d zpadlen=%d\n", fplace, zpadlen);
1079 : #endif
1080 :
1081 : /*
1082 : * Decimal point. This should probably use locale to find the correct
1083 : * char to print out.
1084 : */
1085 : if (max > 0) {
1086 : dopr_outch (buffer, currlen, maxlen, '.');
1087 :
1088 : while (zpadlen > 0) {
1089 : dopr_outch (buffer, currlen, maxlen, '0');
1090 : --zpadlen;
1091 : }
1092 :
1093 : while (fplace > 0)
1094 : dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]);
1095 : }
1096 :
1097 : while (padlen < 0) {
1098 : dopr_outch (buffer, currlen, maxlen, ' ');
1099 : ++padlen;
1100 : }
1101 : }
1102 :
1103 : static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c)
1104 : {
1105 : if (*currlen < maxlen) {
1106 : buffer[(*currlen)] = c;
1107 : }
1108 : (*currlen)++;
1109 : }
1110 :
1111 : static struct pr_chunk *new_chunk(void) {
1112 : struct pr_chunk *new_c = (struct pr_chunk *)malloc(sizeof(struct pr_chunk));
1113 :
1114 : if (!new_c)
1115 : return NULL;
1116 :
1117 : new_c->type = 0;
1118 : new_c->num = 0;
1119 : new_c->min = 0;
1120 : new_c->min_star = NULL;
1121 : new_c->max = -1;
1122 : new_c->max_star = NULL;
1123 : new_c->flags = 0;
1124 : new_c->cflags = 0;
1125 : new_c->start = 0;
1126 : new_c->len = 0;
1127 : new_c->value = 0;
1128 : new_c->fvalue = 0;
1129 : new_c->strvalue = NULL;
1130 : new_c->pnum = NULL;
1131 : new_c->next = NULL;
1132 :
1133 : return new_c;
1134 : }
1135 :
1136 : static int add_cnk_list_entry(struct pr_chunk_x **list,
1137 : int max_num, struct pr_chunk *chunk) {
1138 : struct pr_chunk_x *l;
1139 : struct pr_chunk **c;
1140 : int max;
1141 : int cnum;
1142 : int i, pos;
1143 :
1144 : if (chunk->num > max_num) {
1145 : max = chunk->num;
1146 :
1147 : if (*list == NULL) {
1148 : l = (struct pr_chunk_x *)malloc(sizeof(struct pr_chunk_x) * max);
1149 : pos = 0;
1150 : } else {
1151 : l = (struct pr_chunk_x *)realloc(*list, sizeof(struct pr_chunk_x) * max);
1152 : pos = max_num;
1153 : }
1154 : if (l == NULL) {
1155 : for (i = 0; i < max; i++) {
1156 : if ((*list)[i].chunks) free((*list)[i].chunks);
1157 : }
1158 : return 0;
1159 : }
1160 : for (i = pos; i < max; i++) {
1161 : l[i].chunks = NULL;
1162 : l[i].num = 0;
1163 : }
1164 : } else {
1165 : l = *list;
1166 : max = max_num;
1167 : }
1168 :
1169 : i = chunk->num - 1;
1170 : cnum = l[i].num + 1;
1171 : if (l[i].chunks == NULL) {
1172 : c = (struct pr_chunk **)malloc(sizeof(struct pr_chunk *) * cnum);
1173 : } else {
1174 : c = (struct pr_chunk **)realloc(l[i].chunks, sizeof(struct pr_chunk *) * cnum);
1175 : }
1176 : if (c == NULL) {
1177 : for (i = 0; i < max; i++) {
1178 : if (l[i].chunks) free(l[i].chunks);
1179 : }
1180 : return 0;
1181 : }
1182 : c[l[i].num] = chunk;
1183 : l[i].chunks = c;
1184 : l[i].num = cnum;
1185 :
1186 : *list = l;
1187 : return max;
1188 : }
1189 :
1190 : int vsnprintf (char *str, size_t count, const char *fmt, va_list args)
1191 : {
1192 : return dopr(str, count, fmt, args);
1193 : }
1194 : #endif
1195 :
1196 : /* yes this really must be a ||. Don't muck with this (tridge)
1197 : *
1198 : * The logic for these two is that we need our own definition if the
1199 : * OS *either* has no definition of *sprintf, or if it does have one
1200 : * that doesn't work properly according to the autoconf test.
1201 : */
1202 : #if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
1203 : int snprintf(char *str,size_t count,const char *fmt,...)
1204 : {
1205 : size_t ret;
1206 : va_list ap;
1207 :
1208 : va_start(ap, fmt);
1209 : ret = vsnprintf(str, count, fmt, ap);
1210 : va_end(ap);
1211 : return ret;
1212 : }
1213 : #endif
1214 :
1215 : #ifndef HAVE_C99_VSNPRINTF
1216 : int printf(const char *fmt, ...)
1217 : {
1218 : va_list ap;
1219 : int ret;
1220 : char *s;
1221 :
1222 : s = NULL;
1223 : va_start(ap, fmt);
1224 : ret = vasprintf(&s, fmt, ap);
1225 : va_end(ap);
1226 :
1227 : if (s) {
1228 : fwrite(s, 1, strlen(s), stdout);
1229 : }
1230 : free(s);
1231 :
1232 : return ret;
1233 : }
1234 : #endif
1235 :
1236 : #ifndef HAVE_C99_VSNPRINTF
1237 : int fprintf(FILE *stream, const char *fmt, ...)
1238 : {
1239 : va_list ap;
1240 : int ret;
1241 : char *s;
1242 :
1243 : s = NULL;
1244 : va_start(ap, fmt);
1245 : ret = vasprintf(&s, fmt, ap);
1246 : va_end(ap);
1247 :
1248 : if (s) {
1249 : fwrite(s, 1, strlen(s), stream);
1250 : }
1251 : free(s);
1252 :
1253 : return ret;
1254 : }
1255 : #endif
1256 :
1257 : #endif
1258 :
1259 : #ifndef HAVE_VASPRINTF
1260 : int vasprintf(char **ptr, const char *format, va_list ap)
1261 : {
1262 : int ret;
1263 : va_list ap2;
1264 :
1265 : VA_COPY(ap2, ap);
1266 : ret = vsnprintf(NULL, 0, format, ap2);
1267 : va_end(ap2);
1268 : if (ret < 0) return ret;
1269 :
1270 : (*ptr) = (char *)malloc(ret+1);
1271 : if (!*ptr) return -1;
1272 :
1273 : VA_COPY(ap2, ap);
1274 : ret = vsnprintf(*ptr, ret+1, format, ap2);
1275 : va_end(ap2);
1276 :
1277 : return ret;
1278 : }
1279 : #endif
1280 :
1281 :
1282 : #ifndef HAVE_ASPRINTF
1283 : int asprintf(char **ptr, const char *format, ...)
1284 : {
1285 : va_list ap;
1286 : int ret;
1287 :
1288 : *ptr = NULL;
1289 : va_start(ap, format);
1290 : ret = vasprintf(ptr, format, ap);
1291 : va_end(ap);
1292 :
1293 : return ret;
1294 : }
1295 : #endif
1296 :
1297 : #ifdef TEST_SNPRINTF
1298 :
1299 : int sprintf(char *str,const char *fmt,...);
1300 : int printf(const char *fmt,...);
1301 :
1302 : int main (void)
1303 : {
1304 : char buf1[1024];
1305 : char buf2[1024];
1306 : char *buf3;
1307 : char *fp_fmt[] = {
1308 : "%1.1f",
1309 : "%-1.5f",
1310 : "%1.5f",
1311 : "%123.9f",
1312 : "%10.5f",
1313 : "% 10.5f",
1314 : "%+22.9f",
1315 : "%+4.9f",
1316 : "%01.3f",
1317 : "%4f",
1318 : "%3.1f",
1319 : "%3.2f",
1320 : "%.0f",
1321 : "%f",
1322 : "%-8.8f",
1323 : "%-9.9f",
1324 : NULL
1325 : };
1326 : double fp_nums[] = { 6442452944.1234, -1.5, 134.21, 91340.2, 341.1234, 203.9, 0.96, 0.996,
1327 : 0.9996, 1.996, 4.136, 5.030201, 0.00205,
1328 : /* END LIST */ 0};
1329 : char *int_fmt[] = {
1330 : "%-1.5d",
1331 : "%1.5d",
1332 : "%123.9d",
1333 : "%5.5d",
1334 : "%10.5d",
1335 : "% 10.5d",
1336 : "%+22.33d",
1337 : "%01.3d",
1338 : "%4d",
1339 : "%d",
1340 : NULL
1341 : };
1342 : long int_nums[] = { -1, 134, 91340, 341, 0203, 1234567890, 0};
1343 : char *str_fmt[] = {
1344 : "%10.5s",
1345 : "%-10.5s",
1346 : "%5.10s",
1347 : "%-5.10s",
1348 : "%10.1s",
1349 : "%0.10s",
1350 : "%10.0s",
1351 : "%1.10s",
1352 : "%s",
1353 : "%.1s",
1354 : "%.10s",
1355 : "%10s",
1356 : NULL
1357 : };
1358 : char *str_vals[] = {"hello", "a", "", "a longer string", NULL};
1359 : #ifdef HAVE_LONG_LONG
1360 : char *ll_fmt[] = {
1361 : "%llu",
1362 : NULL
1363 : };
1364 : LLONG ll_nums[] = { 134, 91340, 341, 0203, 1234567890, 128006186140000000LL, 0};
1365 : #endif
1366 : int x, y;
1367 : int fail = 0;
1368 : int num = 0;
1369 : int l1, l2;
1370 : char *ss_fmt[] = {
1371 : "%zd",
1372 : "%zu",
1373 : NULL
1374 : };
1375 : size_t ss_nums[] = {134, 91340, 123456789, 0203, 1234567890, 0};
1376 :
1377 : printf ("Testing snprintf format codes against system sprintf...\n");
1378 :
1379 : for (x = 0; fp_fmt[x] ; x++) {
1380 : for (y = 0; fp_nums[y] != 0 ; y++) {
1381 : buf1[0] = buf2[0] = '\0';
1382 : l1 = snprintf(buf1, sizeof(buf1), fp_fmt[x], fp_nums[y]);
1383 : l2 = sprintf (buf2, fp_fmt[x], fp_nums[y]);
1384 : buf1[1023] = buf2[1023] = '\0';
1385 : if (strcmp (buf1, buf2) || (l1 != l2)) {
1386 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1387 : fp_fmt[x], l1, buf1, l2, buf2);
1388 : fail++;
1389 : }
1390 : num++;
1391 : }
1392 : }
1393 :
1394 : for (x = 0; int_fmt[x] ; x++) {
1395 : for (y = 0; int_nums[y] != 0 ; y++) {
1396 : buf1[0] = buf2[0] = '\0';
1397 : l1 = snprintf(buf1, sizeof(buf1), int_fmt[x], int_nums[y]);
1398 : l2 = sprintf (buf2, int_fmt[x], int_nums[y]);
1399 : buf1[1023] = buf2[1023] = '\0';
1400 : if (strcmp (buf1, buf2) || (l1 != l2)) {
1401 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1402 : int_fmt[x], l1, buf1, l2, buf2);
1403 : fail++;
1404 : }
1405 : num++;
1406 : }
1407 : }
1408 :
1409 : for (x = 0; str_fmt[x] ; x++) {
1410 : for (y = 0; str_vals[y] != 0 ; y++) {
1411 : buf1[0] = buf2[0] = '\0';
1412 : l1 = snprintf(buf1, sizeof(buf1), str_fmt[x], str_vals[y]);
1413 : l2 = sprintf (buf2, str_fmt[x], str_vals[y]);
1414 : buf1[1023] = buf2[1023] = '\0';
1415 : if (strcmp (buf1, buf2) || (l1 != l2)) {
1416 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1417 : str_fmt[x], l1, buf1, l2, buf2);
1418 : fail++;
1419 : }
1420 : num++;
1421 : }
1422 : }
1423 :
1424 : #ifdef HAVE_LONG_LONG
1425 : for (x = 0; ll_fmt[x] ; x++) {
1426 : for (y = 0; ll_nums[y] != 0 ; y++) {
1427 : buf1[0] = buf2[0] = '\0';
1428 : l1 = snprintf(buf1, sizeof(buf1), ll_fmt[x], ll_nums[y]);
1429 : l2 = sprintf (buf2, ll_fmt[x], ll_nums[y]);
1430 : buf1[1023] = buf2[1023] = '\0';
1431 : if (strcmp (buf1, buf2) || (l1 != l2)) {
1432 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1433 : ll_fmt[x], l1, buf1, l2, buf2);
1434 : fail++;
1435 : }
1436 : num++;
1437 : }
1438 : }
1439 : #endif
1440 :
1441 : #define BUFSZ 2048
1442 :
1443 : buf1[0] = buf2[0] = '\0';
1444 : if ((buf3 = malloc(BUFSZ)) == NULL) {
1445 : fail++;
1446 : } else {
1447 : num++;
1448 : memset(buf3, 'a', BUFSZ);
1449 : snprintf(buf1, sizeof(buf1), "%.*s", 1, buf3);
1450 : buf1[1023] = '\0';
1451 : if (strcmp(buf1, "a") != 0) {
1452 : printf("length limit buf1 '%s' expected 'a'\n", buf1);
1453 : fail++;
1454 : }
1455 : }
1456 :
1457 : buf1[0] = buf2[0] = '\0';
1458 : l1 = snprintf(buf1, sizeof(buf1), "%4$*1$d %2$s %3$*1$.*1$f", 3, "pos test", 12.3456, 9);
1459 : l2 = sprintf(buf2, "%4$*1$d %2$s %3$*1$.*1$f", 3, "pos test", 12.3456, 9);
1460 : buf1[1023] = buf2[1023] = '\0';
1461 : if (strcmp(buf1, buf2) || (l1 != l2)) {
1462 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1463 : "%4$*1$d %2$s %3$*1$.*1$f", l1, buf1, l2, buf2);
1464 : fail++;
1465 : }
1466 :
1467 : buf1[0] = buf2[0] = '\0';
1468 : l1 = snprintf(buf1, sizeof(buf1), "%4$*4$d %2$s %3$*4$.*4$f", 3, "pos test", 12.3456, 9);
1469 : l2 = sprintf(buf2, "%4$*4$d %2$s %3$*4$.*4$f", 3, "pos test", 12.3456, 9);
1470 : buf1[1023] = buf2[1023] = '\0';
1471 : if (strcmp(buf1, buf2)) {
1472 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1473 : "%4$*1$d %2$s %3$*1$.*1$f", l1, buf1, l2, buf2);
1474 : fail++;
1475 : }
1476 :
1477 : for (x = 0; ss_fmt[x] ; x++) {
1478 : for (y = 0; ss_nums[y] != 0 ; y++) {
1479 : buf1[0] = buf2[0] = '\0';
1480 : l1 = snprintf(buf1, sizeof(buf1), ss_fmt[x], ss_nums[y]);
1481 : l2 = sprintf (buf2, ss_fmt[x], ss_nums[y]);
1482 : buf1[1023] = buf2[1023] = '\0';
1483 : if (strcmp (buf1, buf2) || (l1 != l2)) {
1484 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1485 : ss_fmt[x], l1, buf1, l2, buf2);
1486 : fail++;
1487 : }
1488 : num++;
1489 : }
1490 : }
1491 : #if 0
1492 : buf1[0] = buf2[0] = '\0';
1493 : l1 = snprintf(buf1, sizeof(buf1), "%lld", (LLONG)1234567890);
1494 : l2 = sprintf(buf2, "%lld", (LLONG)1234567890);
1495 : buf1[1023] = buf2[1023] = '\0';
1496 : if (strcmp(buf1, buf2)) {
1497 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1498 : "%lld", l1, buf1, l2, buf2);
1499 : fail++;
1500 : }
1501 :
1502 : buf1[0] = buf2[0] = '\0';
1503 : l1 = snprintf(buf1, sizeof(buf1), "%Lf", (LDOUBLE)890.1234567890123);
1504 : l2 = sprintf(buf2, "%Lf", (LDOUBLE)890.1234567890123);
1505 : buf1[1023] = buf2[1023] = '\0';
1506 : if (strcmp(buf1, buf2)) {
1507 : printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1508 : "%Lf", l1, buf1, l2, buf2);
1509 : fail++;
1510 : }
1511 : #endif
1512 : printf ("%d tests failed out of %d.\n", fail, num);
1513 :
1514 : printf("seeing how many digits we support\n");
1515 : {
1516 : double v0 = 0.12345678901234567890123456789012345678901;
1517 : for (x=0; x<100; x++) {
1518 : double p = pow(10, x);
1519 : double r = v0*p;
1520 : snprintf(buf1, sizeof(buf1), "%1.1f", r);
1521 : sprintf(buf2, "%1.1f", r);
1522 : if (strcmp(buf1, buf2)) {
1523 : printf("we seem to support %d digits\n", x-1);
1524 : break;
1525 : }
1526 : }
1527 : }
1528 :
1529 : return 0;
1530 : }
1531 : #endif /* TEST_SNPRINTF */
|
