« back to all changes in this revision
Viewing changes to snprintf.c
- browse files at revision 1
- compare with another revision
- download diff
- download tarball
- view history from revision 1
- Committer: Bazaar Package Importer
- Author(s): Piotr Ozarowski
- Date: 2006-05-13 21:15:49 UTC
- Revision ID: james.westby@ubuntu.com-20060513211549-2vu7peis643ojcm5
Tags: upstream-1.15
Import upstream version 1.15
- files added:
- 7z
- doc
- lib
- test
added
removed
snprintf.c
1
/*
2
* Copyright Patrick Powell 1995
3
* This code is based on code written by Patrick Powell (papowell@astart.com)
4
* It may be used for any purpose as long as this notice remains intact
5
* on all source code distributions
6
*/
7
8
/**************************************************************
9
* Original:
10
* Patrick Powell Tue Apr 11 09:48:21 PDT 1995
11
* A bombproof version of doprnt (dopr) included.
12
* Sigh. This sort of thing is always nasty do deal with. Note that
13
* the version here does not include floating point...
14
*
15
* snprintf() is used instead of sprintf() as it does limit checks
16
* for string length. This covers a nasty loophole.
17
*
18
* The other functions are there to prevent NULL pointers from
19
* causing nast effects.
20
*
21
* More Recently:
22
* Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43
23
* This was ugly. It is still ugly. I opted out of floating point
24
* numbers, but the formatter understands just about everything
25
* from the normal C string format, at least as far as I can tell from
26
* the Solaris 2.5 printf(3S) man page.
27
*
28
* Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1
29
* Ok, added some minimal floating point support, which means this
30
* probably requires libm on most operating systems. Don't yet
31
* support the exponent (e, E) and sigfig (g, G). Also, fmtint()
32
* was pretty badly broken, it just wasn't being exercised in ways
33
* which showed it, so that's been fixed. Also, formated the code
34
* to mutt conventions, and removed dead code left over from the
35
* original. Also, there is now a builtin-test, just compile with:
36
* gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm
37
* and run snprintf for results.
38
*
39
* Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i
40
* The PGP code was using unsigned hexadecimal formats.
41
* Unfortunately, unsigned formats simply didn't work.
42
*
43
* Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8
44
* The original code assumed that both snprintf() and vsnprintf() were
45
* missing. Some systems only have snprintf() but not vsnprintf(), so
46
* the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
47
*
48
* Andrew Tridgell (tridge@samba.org) Oct 1998
49
* fixed handling of %.0f
50
* added test for HAVE_LONG_DOUBLE
51
*
52
* Chris Kirmse (ckirmse@yahoo.com) May 2003
53
* fixed handling of leading zeros in the fractional part of a float.
54
*
55
* Andrea Mazzoleni May 2003
56
* added minimal support for %g.
57
*
58
**************************************************************/
59
60
#if HAVE_CONFIG_H
61
#include <config.h>
62
#endif
63
64
/* moved above the #ifdef to avoid warning about empty c-files */
65
#include <string.h>
66
#include <ctype.h>
67
#include <sys/types.h>
68
69
#if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF)
70
71
/* varargs declarations: */
72
73
#if defined(HAVE_STDARG_H)
74
# include <stdarg.h>
75
# define HAVE_STDARGS /* let's hope that works everywhere (mj) */
76
# define VA_LOCAL_DECL va_list ap
77
# define VA_START(f) va_start(ap, f)
78
# define VA_SHIFT(v, t) ; /* no-op for ANSI */
79
# define VA_END va_end(ap)
80
#else
81
# if defined(HAVE_VARARGS_H)
82
# include <varargs.h>
83
# undef HAVE_STDARGS
84
# define VA_LOCAL_DECL va_list ap
85
# define VA_START(f) va_start(ap) /* f is ignored! */
86
# define VA_SHIFT(v, t) v = va_arg(ap, t)
87
# define VA_END va_end(ap)
88
# else
89
#error NO VARARGS
90
/*XX ** NO VARARGS ** XX*/
91
# endif
92
#endif
93
94
#ifdef HAVE_LONG_DOUBLE
95
#define LDOUBLE long double
96
#else
97
#define LDOUBLE double
98
#endif
99
100
int snprintf (char *str, size_t count, const char *fmt, ...);
101
int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);
102
103
static void dopr (char *buffer, size_t maxlen, const char *format,
104
va_list args);
105
static void fmtstr (char *buffer, size_t *currlen, size_t maxlen,
106
char *value, int flags, int min, int max);
107
static void fmtint (char *buffer, size_t *currlen, size_t maxlen,
108
long value, int base, int min, int max, int flags);
109
static void fmtfp (char *buffer, size_t *currlen, size_t maxlen,
110
LDOUBLE fvalue, int min, int max, int flags);
111
static void fmtfpg (char *buffer, size_t *currlen, size_t maxlen,
112
LDOUBLE fvalue, int min, int max, int flags);
113
static void dopr_outch (char *buffer, size_t *currlen, size_t maxlen, char c );
114
115
/*
116
* dopr(): poor man's version of doprintf
117
*/
118
119
/* format read states */
120
#define DP_S_DEFAULT 0
121
#define DP_S_FLAGS 1
122
#define DP_S_MIN 2
123
#define DP_S_DOT 3
124
#define DP_S_MAX 4
125
#define DP_S_MOD 5
126
#define DP_S_CONV 6
127
#define DP_S_DONE 7
128
129
/* format flags - Bits */
130
#define DP_F_MINUS (1 << 0)
131
#define DP_F_PLUS (1 << 1)
132
#define DP_F_SPACE (1 << 2)
133
#define DP_F_NUM (1 << 3)
134
#define DP_F_ZERO (1 << 4)
135
#define DP_F_UP (1 << 5)
136
#define DP_F_UNSIGNED (1 << 6)
137
138
/* Conversion Flags */
139
#define DP_C_SHORT 1
140
#define DP_C_LONG 2
141
#define DP_C_LDOUBLE 3
142
143
#define char_to_int(p) (p - '0')
144
#define MAX(p, q) ((p >= q) ? p : q)
145
146
static void dopr (char *buffer, size_t maxlen, const char *format, va_list args)
147
{
148
char ch;
149
long value;
150
LDOUBLE fvalue;
151
char *strvalue;
152
int min;
153
int max;
154
int state;
155
int flags;
156
int cflags;
157
size_t currlen;
158
159
state = DP_S_DEFAULT;
160
currlen = flags = cflags = min = 0;
161
max = -1;
162
ch = *format++;
163
164
while (state != DP_S_DONE)
165
{
166
if ((ch == '\0') || (currlen >= maxlen))
167
state = DP_S_DONE;
168
169
switch(state)
170
{
171
case DP_S_DEFAULT:
172
if (ch == '%')
173
state = DP_S_FLAGS;
174
else
175
dopr_outch (buffer, &currlen, maxlen, ch);
176
ch = *format++;
177
break;
178
case DP_S_FLAGS:
179
switch (ch)
180
{
181
case '-':
182
flags |= DP_F_MINUS;
183
ch = *format++;
184
break;
185
case '+':
186
flags |= DP_F_PLUS;
187
ch = *format++;
188
break;
189
case ' ':
190
flags |= DP_F_SPACE;
191
ch = *format++;
192
break;
193
case '#':
194
flags |= DP_F_NUM;
195
ch = *format++;
196
break;
197
case '0':
198
flags |= DP_F_ZERO;
199
ch = *format++;
200
break;
201
default:
202
state = DP_S_MIN;
203
break;
204
}
205
break;
206
case DP_S_MIN:
207
if (isdigit(ch))
208
{
209
min = 10*min + char_to_int (ch);
210
ch = *format++;
211
}
212
else if (ch == '*')
213
{
214
min = va_arg (args, int);
215
ch = *format++;
216
state = DP_S_DOT;
217
}
218
else
219
state = DP_S_DOT;
220
break;
221
case DP_S_DOT:
222
if (ch == '.')
223
{
224
state = DP_S_MAX;
225
ch = *format++;
226
}
227
else
228
state = DP_S_MOD;
229
break;
230
case DP_S_MAX:
231
if (isdigit(ch))
232
{
233
if (max < 0)
234
max = 0;
235
max = 10*max + char_to_int (ch);
236
ch = *format++;
237
}
238
else if (ch == '*')
239
{
240
max = va_arg (args, int);
241
ch = *format++;
242
state = DP_S_MOD;
243
}
244
else
245
state = DP_S_MOD;
246
break;
247
case DP_S_MOD:
248
/* Currently, we don't support Long Long, bummer */
249
switch (ch)
250
{
251
case 'h':
252
cflags = DP_C_SHORT;
253
ch = *format++;
254
break;
255
case 'l':
256
cflags = DP_C_LONG;
257
ch = *format++;
258
break;
259
case 'L':
260
cflags = DP_C_LDOUBLE;
261
ch = *format++;
262
break;
263
default:
264
break;
265
}
266
state = DP_S_CONV;
267
break;
268
case DP_S_CONV:
269
switch (ch)
270
{
271
case 'd':
272
case 'i':
273
if (cflags == DP_C_SHORT)
274
value = va_arg (args, int);
275
else if (cflags == DP_C_LONG)
276
value = va_arg (args, long int);
277
else
278
value = va_arg (args, int);
279
fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags);
280
break;
281
case 'o':
282
flags |= DP_F_UNSIGNED;
283
if (cflags == DP_C_SHORT)
284
value = va_arg (args, unsigned int);
285
else if (cflags == DP_C_LONG)
286
value = va_arg (args, unsigned long int);
287
else
288
value = va_arg (args, unsigned int);
289
fmtint (buffer, &currlen, maxlen, value, 8, min, max, flags);
290
break;
291
case 'u':
292
flags |= DP_F_UNSIGNED;
293
if (cflags == DP_C_SHORT)
294
value = va_arg (args, unsigned int);
295
else if (cflags == DP_C_LONG)
296
value = va_arg (args, unsigned long int);
297
else
298
value = va_arg (args, unsigned int);
299
fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags);
300
break;
301
case 'X':
302
flags |= DP_F_UP;
303
case 'x':
304
flags |= DP_F_UNSIGNED;
305
if (cflags == DP_C_SHORT)
306
value = va_arg (args, unsigned int);
307
else if (cflags == DP_C_LONG)
308
value = va_arg (args, unsigned long int);
309
else
310
value = va_arg (args, unsigned int);
311
fmtint (buffer, &currlen, maxlen, value, 16, min, max, flags);
312
break;
313
case 'f':
314
if (cflags == DP_C_LDOUBLE)
315
fvalue = va_arg (args, LDOUBLE);
316
else
317
fvalue = va_arg (args, double);
318
/* um, floating point? */
319
fmtfp (buffer, &currlen, maxlen, fvalue, min, max, flags);
320
break;
321
case 'E':
322
flags |= DP_F_UP;
323
case 'e':
324
if (cflags == DP_C_LDOUBLE)
325
fvalue = va_arg (args, LDOUBLE);
326
else
327
fvalue = va_arg (args, double);
328
break;
329
case 'G':
330
flags |= DP_F_UP;
331
case 'g':
332
if (cflags == DP_C_LDOUBLE)
333
fvalue = va_arg (args, LDOUBLE);
334
else
335
fvalue = va_arg (args, double);
336
fmtfpg (buffer, &currlen, maxlen, fvalue, min, max, flags);
337
break;
338
case 'c':
339
dopr_outch (buffer, &currlen, maxlen, va_arg (args, int));
340
break;
341
case 's':
342
strvalue = va_arg (args, char *);
343
if (max < 0)
344
max = maxlen; /* ie, no max */
345
fmtstr (buffer, &currlen, maxlen, strvalue, flags, min, max);
346
break;
347
case 'p':
348
strvalue = va_arg (args, void *);
349
fmtint (buffer, &currlen, maxlen, (long) strvalue, 16, min, max, flags);
350
break;
351
case 'n':
352
if (cflags == DP_C_SHORT)
353
{
354
short int *num;
355
num = va_arg (args, short int *);
356
*num = currlen;
357
}
358
else if (cflags == DP_C_LONG)
359
{
360
long int *num;
361
num = va_arg (args, long int *);
362
*num = currlen;
363
}
364
else
365
{
366
int *num;
367
num = va_arg (args, int *);
368
*num = currlen;
369
}
370
break;
371
case '%':
372
dopr_outch (buffer, &currlen, maxlen, ch);
373
break;
374
case 'w':
375
/* not supported yet, treat as next char */
376
ch = *format++;
377
break;
378
default:
379
/* Unknown, skip */
380
break;
381
}
382
ch = *format++;
383
state = DP_S_DEFAULT;
384
flags = cflags = min = 0;
385
max = -1;
386
break;
387
case DP_S_DONE:
388
break;
389
default:
390
/* hmm? */
391
break; /* some picky compilers need this */
392
}
393
}
394
if (currlen < maxlen - 1)
395
buffer[currlen] = '\0';
396
else
397
buffer[maxlen - 1] = '\0';
398
}
399
400
static void fmtstr (char *buffer, size_t *currlen, size_t maxlen,
401
char *value, int flags, int min, int max)
402
{
403
int padlen, strln; /* amount to pad */
404
int cnt = 0;
405
406
if (value == 0)
407
{
408
value = "<NULL>";
409
}
410
411
for (strln = 0; value[strln]; ++strln); /* strlen */
412
padlen = min - strln;
413
if (padlen < 0)
414
padlen = 0;
415
if (flags & DP_F_MINUS)
416
padlen = -padlen; /* Left Justify */
417
418
while ((padlen > 0) && (cnt < max))
419
{
420
dopr_outch (buffer, currlen, maxlen, ' ');
421
--padlen;
422
++cnt;
423
}
424
while (*value && (cnt < max))
425
{
426
dopr_outch (buffer, currlen, maxlen, *value++);
427
++cnt;
428
}
429
while ((padlen < 0) && (cnt < max))
430
{
431
dopr_outch (buffer, currlen, maxlen, ' ');
432
++padlen;
433
++cnt;
434
}
435
}
436
437
/* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
438
439
static void fmtint (char *buffer, size_t *currlen, size_t maxlen,
440
long value, int base, int min, int max, int flags)
441
{
442
int signvalue = 0;
443
unsigned long uvalue;
444
char convert[20];
445
int place = 0;
446
int spadlen = 0; /* amount to space pad */
447
int zpadlen = 0; /* amount to zero pad */
448
int caps = 0;
449
450
if (max < 0)
451
max = 0;
452
453
uvalue = value;
454
455
if(!(flags & DP_F_UNSIGNED))
456
{
457
if( value < 0 ) {
458
signvalue = '-';
459
uvalue = -value;
460
}
461
else
462
if (flags & DP_F_PLUS) /* Do a sign (+/i) */
463
signvalue = '+';
464
else
465
if (flags & DP_F_SPACE)
466
signvalue = ' ';
467
}
468
469
if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
470
471
do {
472
convert[place++] =
473
(caps? "0123456789ABCDEF":"0123456789abcdef")
474
[uvalue % (unsigned)base ];
475
uvalue = (uvalue / (unsigned)base );
476
} while(uvalue && (place < 20));
477
if (place == 20) place--;
478
convert[place] = 0;
479
480
zpadlen = max - place;
481
spadlen = min - MAX (max, place) - (signvalue ? 1 : 0);
482
if (zpadlen < 0) zpadlen = 0;
483
if (spadlen < 0) spadlen = 0;
484
if (flags & DP_F_ZERO)
485
{
486
zpadlen = MAX(zpadlen, spadlen);
487
spadlen = 0;
488
}
489
if (flags & DP_F_MINUS)
490
spadlen = -spadlen; /* Left Justifty */
491
492
#ifdef DEBUG_SNPRINTF
493
dprint (1, (debugfile, "zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
494
zpadlen, spadlen, min, max, place));
495
#endif
496
497
/* Spaces */
498
while (spadlen > 0)
499
{
500
dopr_outch (buffer, currlen, maxlen, ' ');
501
--spadlen;
502
}
503
504
/* Sign */
505
if (signvalue)
506
dopr_outch (buffer, currlen, maxlen, signvalue);
507
508
/* Zeros */
509
if (zpadlen > 0)
510
{
511
while (zpadlen > 0)
512
{
513
dopr_outch (buffer, currlen, maxlen, '0');
514
--zpadlen;
515
}
516
}
517
518
/* Digits */
519
while (place > 0)
520
dopr_outch (buffer, currlen, maxlen, convert[--place]);
521
522
/* Left Justified spaces */
523
while (spadlen < 0) {
524
dopr_outch (buffer, currlen, maxlen, ' ');
525
++spadlen;
526
}
527
}
528
529
static LDOUBLE abs_val (LDOUBLE value)
530
{
531
LDOUBLE result = value;
532
533
if (value < 0)
534
result = -value;
535
536
return result;
537
}
538
539
static LDOUBLE pow10 (int exp)
540
{
541
LDOUBLE result = 1;
542
543
while (exp)
544
{
545
result *= 10;
546
exp--;
547
}
548
549
return result;
550
}
551
552
static long round (LDOUBLE value)
553
{
554
long intpart;
555
556
intpart = value;
557
value = value - intpart;
558
if (value >= 0.5)
559
intpart++;
560
561
return intpart;
562
}
563
564
static void fmtfp (char *buffer, size_t *currlen, size_t maxlen,
565
LDOUBLE fvalue, int min, int max, int flags)
566
{
567
int signvalue = 0;
568
LDOUBLE ufvalue;
569
char iconvert[20];
570
char fconvert[20];
571
int iplace = 0;
572
int fplace = 0;
573
int padlen = 0; /* amount to pad */
574
int zpadlen = 0;
575
int caps = 0;
576
long intpart;
577
long fracpart;
578
579
/*
580
* AIX manpage says the default is 0, but Solaris says the default
581
* is 6, and sprintf on AIX defaults to 6
582
*/
583
if (max < 0)
584
max = 6;
585
586
ufvalue = abs_val (fvalue);
587
588
if (fvalue < 0)
589
signvalue = '-';
590
else
591
if (flags & DP_F_PLUS) /* Do a sign (+/i) */
592
signvalue = '+';
593
else
594
if (flags & DP_F_SPACE)
595
signvalue = ' ';
596
597
#if 0
598
if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
599
#endif
600
601
intpart = ufvalue;
602
603
/*
604
* Sorry, we only support 9 digits past the decimal because of our
605
* conversion method
606
*/
607
if (max > 9)
608
max = 9;
609
610
/* We "cheat" by converting the fractional part to integer by
611
* multiplying by a factor of 10
612
*/
613
fracpart = round ((pow10 (max)) * (ufvalue - intpart));
614
615
if (fracpart >= pow10 (max))
616
{
617
intpart++;
618
fracpart -= pow10 (max);
619
}
620
621
#ifdef DEBUG_SNPRINTF
622
dprint (1, (debugfile, "fmtfp: %f =? %d.%d\n", fvalue, intpart, fracpart));
623
#endif
624
625
/* Convert integer part */
626
do {
627
iconvert[iplace++] =
628
(caps? "0123456789ABCDEF":"0123456789abcdef")[intpart % 10];
629
intpart = (intpart / 10);
630
} while(intpart && (iplace < 20));
631
if (iplace == 20) iplace--;
632
iconvert[iplace] = 0;
633
634
/* Convert fractional part */
635
do {
636
fconvert[fplace++] =
637
(caps? "0123456789ABCDEF":"0123456789abcdef")[fracpart % 10];
638
fracpart = (fracpart / 10);
639
} while(fracpart && (fplace < 20));
640
if (fplace == 20) fplace--;
641
fconvert[fplace] = 0;
642
643
/* -1 for decimal point, another -1 if we are printing a sign */
644
padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
645
zpadlen = max - fplace;
646
if (zpadlen < 0)
647
zpadlen = 0;
648
if (padlen < 0)
649
padlen = 0;
650
if (flags & DP_F_MINUS)
651
padlen = -padlen; /* Left Justifty */
652
653
if ((flags & DP_F_ZERO) && (padlen > 0))
654
{
655
if (signvalue)
656
{
657
dopr_outch (buffer, currlen, maxlen, signvalue);
658
--padlen;
659
signvalue = 0;
660
}
661
while (padlen > 0)
662
{
663
dopr_outch (buffer, currlen, maxlen, '0');
664
--padlen;
665
}
666
}
667
while (padlen > 0)
668
{
669
dopr_outch (buffer, currlen, maxlen, ' ');
670
--padlen;
671
}
672
if (signvalue)
673
dopr_outch (buffer, currlen, maxlen, signvalue);
674
675
while (iplace > 0)
676
dopr_outch (buffer, currlen, maxlen, iconvert[--iplace]);
677
678
/*
679
* Decimal point. This should probably use locale to find the correct
680
* char to print out.
681
*/
682
if (max > 0)
683
{
684
int i;
685
dopr_outch (buffer, currlen, maxlen, '.');
686
687
/* print leading zeros of the fractional part */
688
for (i=0;i<max - fplace;i++)
689
{
690
dopr_outch(buffer,currlen,maxlen,'0');
691
zpadlen--;
692
}
693
694
while (fplace > 0)
695
dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]);
696
}
697
698
while (zpadlen > 0)
699
{
700
dopr_outch (buffer, currlen, maxlen, '0');
701
--zpadlen;
702
}
703
704
while (padlen < 0)
705
{
706
dopr_outch (buffer, currlen, maxlen, ' ');
707
++padlen;
708
}
709
}
710
711
static void fmtfpg (char *buffer, size_t *currlen, size_t maxlen,
712
LDOUBLE fvalue, int min, int max, int flags)
713
{
714
size_t len = *currlen;
715
size_t i;
716
fmtfp(buffer, currlen, maxlen, fvalue, min, max, flags);
717
/* remove ending 0 after '.' */
718
for(i=len;i<*currlen;++i)
719
if (buffer[i] == '.')
720
break;
721
if (i<*currlen) {
722
while (*currlen>0 && buffer[*currlen - 1]=='0')
723
--*currlen;
724
if (*currlen>0 && buffer[*currlen - 1]=='.')
725
--*currlen;
726
}
727
}
728
729
static void dopr_outch (char *buffer, size_t *currlen, size_t maxlen, char c)
730
{
731
if (*currlen < maxlen)
732
buffer[(*currlen)++] = c;
733
}
734
735
#ifndef HAVE_VSNPRINTF
736
int vsnprintf (char *str, size_t count, const char *fmt, va_list args)
737
{
738
str[0] = 0;
739
dopr(str, count, fmt, args);
740
return(strlen(str));
741
}
742
#endif /* !HAVE_VSNPRINTF */
743
744
#ifndef HAVE_SNPRINTF
745
/* VARARGS3 */
746
#ifdef HAVE_STDARGS
747
int snprintf (char *str, size_t count, const char *fmt, ...)
748
#else
749
int snprintf (va_alist) va_dcl
750
#endif
751
{
752
#ifndef HAVE_STDARGS
753
char *str;
754
size_t count;
755
char *fmt;
756
#endif
757
VA_LOCAL_DECL;
758
759
VA_START (fmt);
760
VA_SHIFT (str, char *);
761
VA_SHIFT (count, size_t );
762
VA_SHIFT (fmt, char *);
763
(void) vsnprintf(str, count, fmt, ap);
764
VA_END;
765
return(strlen(str));
766
}
767
#endif /* !HAVE_SNPRINTF */
768
769
#ifdef TEST_SNPRINTF
770
#ifndef LONG_STRING
771
#define LONG_STRING 1024
772
#endif
773
int main (void)
774
{
775
char buf1[LONG_STRING];
776
char buf2[LONG_STRING];
777
char *fp_fmt[] = {
778
"%-1.5f",
779
"%1.5f",
780
"%123.9f",
781
"%10.5f",
782
"% 10.5f",
783
"%+22.9f",
784
"%+4.9f",
785
"%01.3f",
786
"%4f",
787
"%3.1f",
788
"%3.2f",
789
"%.0f",
790
"%.1f",
791
NULL
792
};
793
double fp_nums[] = { -1.5, 134.21, 91340.2, 341.1234, 0203.9, 0.96, 0.996,
794
0.9996, 1.996, 4.136, 1.05, 0};
795
char *int_fmt[] = {
796
"%-1.5d",
797
"%1.5d",
798
"%123.9d",
799
"%5.5d",
800
"%10.5d",
801
"% 10.5d",
802
"%+22.33d",
803
"%01.3d",
804
"%4d",
805
NULL
806
};
807
long int_nums[] = { -1, 134, 91340, 341, 0203, 0};
808
int x, y;
809
int fail = 0;
810
int num = 0;
811
812
printf ("Testing snprintf format codes against system sprintf...\n");
813
814
for (x = 0; fp_fmt[x] != NULL ; x++)
815
for (y = 0; fp_nums[y] != 0 ; y++)
816
{
817
snprintf (buf1, sizeof (buf1), fp_fmt[x], fp_nums[y]);
818
sprintf (buf2, fp_fmt[x], fp_nums[y]);
819
if (strcmp (buf1, buf2))
820
{
821
printf("snprintf doesn't match Format: %s\n\tsnprintf = %s\n\tsprintf = %s\n",
822
fp_fmt[x], buf1, buf2);
823
fail++;
824
}
825
num++;
826
}
827
828
for (x = 0; int_fmt[x] != NULL ; x++)
829
for (y = 0; int_nums[y] != 0 ; y++)
830
{
831
snprintf (buf1, sizeof (buf1), int_fmt[x], int_nums[y]);
832
sprintf (buf2, int_fmt[x], int_nums[y]);
833
if (strcmp (buf1, buf2))
834
{
835
printf("snprintf doesn't match Format: %s\n\tsnprintf = %s\n\tsprintf = %s\n",
836
int_fmt[x], buf1, buf2);
837
fail++;
838
}
839
num++;
840
}
841
printf ("%d tests failed out of %d.\n", fail, num);
842
}
843
#endif /* SNPRINTF_TEST */
844
845
#endif /* !HAVE_SNPRINTF */
846
Loggerhead is a web-based interface for Breezy
Version: 2.0.1