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3c0ef626 | 1 | /************************************************************** |
2 | * Original: | |
3 | * Patrick Powell Tue Apr 11 09:48:21 PDT 1995 | |
4 | * A bombproof version of doprnt (dopr) included. | |
5 | * Sigh. This sort of thing is always nasty do deal with. Note that | |
6 | * the version here does not include floating point... | |
7 | * | |
8 | * snprintf() is used instead of sprintf() as it does limit checks | |
9 | * for string length. This covers a nasty loophole. | |
10 | * | |
11 | * The other functions are there to prevent NULL pointers from | |
12 | * causing nast effects. | |
13 | * | |
14 | * More Recently: | |
15 | * Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43 | |
16 | * This was ugly. It is still ugly. I opted out of floating point | |
17 | * numbers, but the formatter understands just about everything | |
18 | * from the normal C string format, at least as far as I can tell from | |
19 | * the Solaris 2.5 printf(3S) man page. | |
20 | * | |
21 | * Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1 | |
22 | * Ok, added some minimal floating point support, which means this | |
23 | * probably requires libm on most operating systems. Don't yet | |
24 | * support the exponent (e,E) and sigfig (g,G). Also, fmtint() | |
25 | * was pretty badly broken, it just wasn't being exercised in ways | |
26 | * which showed it, so that's been fixed. Also, formated the code | |
27 | * to mutt conventions, and removed dead code left over from the | |
28 | * original. Also, there is now a builtin-test, just compile with: | |
29 | * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm | |
30 | * and run snprintf for results. | |
31 | * | |
32 | * Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i | |
33 | * The PGP code was using unsigned hexadecimal formats. | |
34 | * Unfortunately, unsigned formats simply didn't work. | |
35 | * | |
36 | * Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8 | |
37 | * The original code assumed that both snprintf() and vsnprintf() were | |
38 | * missing. Some systems only have snprintf() but not vsnprintf(), so | |
39 | * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF. | |
40 | * | |
41 | * Ben Lindstrom <mouring@eviladmin.org> 09/27/00 for OpenSSH | |
42 | * Welcome to the world of %lld and %qd support. With other | |
43 | * long long support. This is needed for sftp-server to work | |
44 | * right. | |
45 | * | |
46 | * Ben Lindstrom <mouring@eviladmin.org> 02/12/01 for OpenSSH | |
47 | * Removed all hint of VARARGS stuff and banished it to the void, | |
48 | * and did a bit of KNF style work to make things a bit more | |
49 | * acceptable. Consider stealing from mutt or enlightenment. | |
50 | **************************************************************/ | |
51 | ||
52 | #include "includes.h" | |
53 | ||
54 | RCSID("$Id$"); | |
55 | ||
56 | #if defined(BROKEN_SNPRINTF) /* For those with broken snprintf() */ | |
57 | # undef HAVE_SNPRINTF | |
58 | # undef HAVE_VSNPRINTF | |
59 | #endif | |
60 | ||
61 | #if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) | |
62 | ||
63 | static void | |
64 | dopr(char *buffer, size_t maxlen, const char *format, va_list args); | |
65 | ||
66 | static void | |
67 | fmtstr(char *buffer, size_t *currlen, size_t maxlen, char *value, int flags, | |
68 | int min, int max); | |
69 | ||
70 | static void | |
71 | fmtint(char *buffer, size_t *currlen, size_t maxlen, long value, int base, | |
72 | int min, int max, int flags); | |
73 | ||
74 | static void | |
75 | fmtfp(char *buffer, size_t *currlen, size_t maxlen, long double fvalue, | |
76 | int min, int max, int flags); | |
77 | ||
78 | static void | |
79 | dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c); | |
80 | ||
81 | /* | |
82 | * dopr(): poor man's version of doprintf | |
83 | */ | |
84 | ||
85 | /* format read states */ | |
86 | #define DP_S_DEFAULT 0 | |
87 | #define DP_S_FLAGS 1 | |
88 | #define DP_S_MIN 2 | |
89 | #define DP_S_DOT 3 | |
90 | #define DP_S_MAX 4 | |
91 | #define DP_S_MOD 5 | |
92 | #define DP_S_CONV 6 | |
93 | #define DP_S_DONE 7 | |
94 | ||
95 | /* format flags - Bits */ | |
96 | #define DP_F_MINUS (1 << 0) | |
97 | #define DP_F_PLUS (1 << 1) | |
98 | #define DP_F_SPACE (1 << 2) | |
99 | #define DP_F_NUM (1 << 3) | |
100 | #define DP_F_ZERO (1 << 4) | |
101 | #define DP_F_UP (1 << 5) | |
102 | #define DP_F_UNSIGNED (1 << 6) | |
103 | ||
104 | /* Conversion Flags */ | |
105 | #define DP_C_SHORT 1 | |
106 | #define DP_C_LONG 2 | |
107 | #define DP_C_LDOUBLE 3 | |
108 | #define DP_C_LONG_LONG 4 | |
109 | ||
110 | #define char_to_int(p) (p - '0') | |
111 | #define abs_val(p) (p < 0 ? -p : p) | |
112 | ||
113 | ||
114 | static void | |
115 | dopr(char *buffer, size_t maxlen, const char *format, va_list args) | |
116 | { | |
117 | char *strvalue; | |
118 | char ch; | |
119 | long value; | |
120 | long double fvalue; | |
121 | int min = 0; | |
122 | int max = -1; | |
123 | int state = DP_S_DEFAULT; | |
124 | int flags = 0; | |
125 | int cflags = 0; | |
126 | size_t currlen = 0; | |
127 | ||
128 | ch = *format++; | |
129 | ||
130 | while (state != DP_S_DONE) { | |
131 | if ((ch == '\0') || (currlen >= maxlen)) | |
132 | state = DP_S_DONE; | |
133 | ||
134 | switch(state) { | |
135 | case DP_S_DEFAULT: | |
136 | if (ch == '%') | |
137 | state = DP_S_FLAGS; | |
138 | else | |
139 | dopr_outch(buffer, &currlen, maxlen, ch); | |
140 | ch = *format++; | |
141 | break; | |
142 | case DP_S_FLAGS: | |
143 | switch (ch) { | |
144 | case '-': | |
145 | flags |= DP_F_MINUS; | |
146 | ch = *format++; | |
147 | break; | |
148 | case '+': | |
149 | flags |= DP_F_PLUS; | |
150 | ch = *format++; | |
151 | break; | |
152 | case ' ': | |
153 | flags |= DP_F_SPACE; | |
154 | ch = *format++; | |
155 | break; | |
156 | case '#': | |
157 | flags |= DP_F_NUM; | |
158 | ch = *format++; | |
159 | break; | |
160 | case '0': | |
161 | flags |= DP_F_ZERO; | |
162 | ch = *format++; | |
163 | break; | |
164 | default: | |
165 | state = DP_S_MIN; | |
166 | break; | |
167 | } | |
168 | break; | |
169 | case DP_S_MIN: | |
170 | if (isdigit((unsigned char)ch)) { | |
171 | min = 10*min + char_to_int (ch); | |
172 | ch = *format++; | |
173 | } else if (ch == '*') { | |
174 | min = va_arg (args, int); | |
175 | ch = *format++; | |
176 | state = DP_S_DOT; | |
177 | } else | |
178 | state = DP_S_DOT; | |
179 | break; | |
180 | case DP_S_DOT: | |
181 | if (ch == '.') { | |
182 | state = DP_S_MAX; | |
183 | ch = *format++; | |
184 | } else | |
185 | state = DP_S_MOD; | |
186 | break; | |
187 | case DP_S_MAX: | |
188 | if (isdigit((unsigned char)ch)) { | |
189 | if (max < 0) | |
190 | max = 0; | |
191 | max = 10*max + char_to_int(ch); | |
192 | ch = *format++; | |
193 | } else if (ch == '*') { | |
194 | max = va_arg (args, int); | |
195 | ch = *format++; | |
196 | state = DP_S_MOD; | |
197 | } else | |
198 | state = DP_S_MOD; | |
199 | break; | |
200 | case DP_S_MOD: | |
201 | switch (ch) { | |
202 | case 'h': | |
203 | cflags = DP_C_SHORT; | |
204 | ch = *format++; | |
205 | break; | |
206 | case 'l': | |
207 | cflags = DP_C_LONG; | |
208 | ch = *format++; | |
209 | if (ch == 'l') { | |
210 | cflags = DP_C_LONG_LONG; | |
211 | ch = *format++; | |
212 | } | |
213 | break; | |
214 | case 'q': | |
215 | cflags = DP_C_LONG_LONG; | |
216 | ch = *format++; | |
217 | break; | |
218 | case 'L': | |
219 | cflags = DP_C_LDOUBLE; | |
220 | ch = *format++; | |
221 | break; | |
222 | default: | |
223 | break; | |
224 | } | |
225 | state = DP_S_CONV; | |
226 | break; | |
227 | case DP_S_CONV: | |
228 | switch (ch) { | |
229 | case 'd': | |
230 | case 'i': | |
231 | if (cflags == DP_C_SHORT) | |
232 | value = va_arg(args, int); | |
233 | else if (cflags == DP_C_LONG) | |
234 | value = va_arg(args, long int); | |
235 | else if (cflags == DP_C_LONG_LONG) | |
236 | value = va_arg (args, long long); | |
237 | else | |
238 | value = va_arg (args, int); | |
239 | fmtint(buffer, &currlen, maxlen, value, 10, min, max, flags); | |
240 | break; | |
241 | case 'o': | |
242 | flags |= DP_F_UNSIGNED; | |
243 | if (cflags == DP_C_SHORT) | |
244 | value = va_arg(args, unsigned int); | |
245 | else if (cflags == DP_C_LONG) | |
246 | value = va_arg(args, unsigned long int); | |
247 | else if (cflags == DP_C_LONG_LONG) | |
248 | value = va_arg(args, unsigned long long); | |
249 | else | |
250 | value = va_arg(args, unsigned int); | |
251 | fmtint(buffer, &currlen, maxlen, value, 8, min, max, flags); | |
252 | break; | |
253 | case 'u': | |
254 | flags |= DP_F_UNSIGNED; | |
255 | if (cflags == DP_C_SHORT) | |
256 | value = va_arg(args, unsigned int); | |
257 | else if (cflags == DP_C_LONG) | |
258 | value = va_arg(args, unsigned long int); | |
259 | else if (cflags == DP_C_LONG_LONG) | |
260 | value = va_arg(args, unsigned long long); | |
261 | else | |
262 | value = va_arg(args, unsigned int); | |
263 | fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags); | |
264 | break; | |
265 | case 'X': | |
266 | flags |= DP_F_UP; | |
267 | case 'x': | |
268 | flags |= DP_F_UNSIGNED; | |
269 | if (cflags == DP_C_SHORT) | |
270 | value = va_arg(args, unsigned int); | |
271 | else if (cflags == DP_C_LONG) | |
272 | value = va_arg(args, unsigned long int); | |
273 | else if (cflags == DP_C_LONG_LONG) | |
274 | value = va_arg(args, unsigned long long); | |
275 | else | |
276 | value = va_arg(args, unsigned int); | |
277 | fmtint(buffer, &currlen, maxlen, value, 16, min, max, flags); | |
278 | break; | |
279 | case 'f': | |
280 | if (cflags == DP_C_LDOUBLE) | |
281 | fvalue = va_arg(args, long double); | |
282 | else | |
283 | fvalue = va_arg(args, double); | |
284 | /* um, floating point? */ | |
285 | fmtfp(buffer, &currlen, maxlen, fvalue, min, max, flags); | |
286 | break; | |
287 | case 'E': | |
288 | flags |= DP_F_UP; | |
289 | case 'e': | |
290 | if (cflags == DP_C_LDOUBLE) | |
291 | fvalue = va_arg(args, long double); | |
292 | else | |
293 | fvalue = va_arg(args, double); | |
294 | break; | |
295 | case 'G': | |
296 | flags |= DP_F_UP; | |
297 | case 'g': | |
298 | if (cflags == DP_C_LDOUBLE) | |
299 | fvalue = va_arg(args, long double); | |
300 | else | |
301 | fvalue = va_arg(args, double); | |
302 | break; | |
303 | case 'c': | |
304 | dopr_outch(buffer, &currlen, maxlen, va_arg(args, int)); | |
305 | break; | |
306 | case 's': | |
307 | strvalue = va_arg(args, char *); | |
308 | if (max < 0) | |
309 | max = maxlen; /* ie, no max */ | |
310 | fmtstr(buffer, &currlen, maxlen, strvalue, flags, min, max); | |
311 | break; | |
312 | case 'p': | |
313 | strvalue = va_arg(args, void *); | |
314 | fmtint(buffer, &currlen, maxlen, (long) strvalue, 16, min, max, flags); | |
315 | break; | |
316 | case 'n': | |
317 | if (cflags == DP_C_SHORT) { | |
318 | short int *num; | |
319 | num = va_arg(args, short int *); | |
320 | *num = currlen; | |
321 | } else if (cflags == DP_C_LONG) { | |
322 | long int *num; | |
323 | num = va_arg(args, long int *); | |
324 | *num = currlen; | |
325 | } else if (cflags == DP_C_LONG_LONG) { | |
326 | long long *num; | |
327 | num = va_arg(args, long long *); | |
328 | *num = currlen; | |
329 | } else { | |
330 | int *num; | |
331 | num = va_arg(args, int *); | |
332 | *num = currlen; | |
333 | } | |
334 | break; | |
335 | case '%': | |
336 | dopr_outch(buffer, &currlen, maxlen, ch); | |
337 | break; | |
338 | case 'w': /* not supported yet, treat as next char */ | |
339 | ch = *format++; | |
340 | break; | |
341 | default: /* Unknown, skip */ | |
342 | break; | |
343 | } | |
344 | ch = *format++; | |
345 | state = DP_S_DEFAULT; | |
346 | flags = cflags = min = 0; | |
347 | max = -1; | |
348 | break; | |
349 | case DP_S_DONE: | |
350 | break; | |
351 | default: /* hmm? */ | |
352 | break; /* some picky compilers need this */ | |
353 | } | |
354 | } | |
355 | if (currlen < maxlen - 1) | |
356 | buffer[currlen] = '\0'; | |
357 | else | |
358 | buffer[maxlen - 1] = '\0'; | |
359 | } | |
360 | ||
361 | static void | |
362 | fmtstr(char *buffer, size_t *currlen, size_t maxlen, | |
363 | char *value, int flags, int min, int max) | |
364 | { | |
365 | int padlen, strln; /* amount to pad */ | |
366 | int cnt = 0; | |
367 | ||
368 | if (value == 0) | |
369 | value = "<NULL>"; | |
370 | ||
371 | for (strln = 0; value[strln]; ++strln); /* strlen */ | |
372 | padlen = min - strln; | |
373 | if (padlen < 0) | |
374 | padlen = 0; | |
375 | if (flags & DP_F_MINUS) | |
376 | padlen = -padlen; /* Left Justify */ | |
377 | ||
378 | while ((padlen > 0) && (cnt < max)) { | |
379 | dopr_outch(buffer, currlen, maxlen, ' '); | |
380 | --padlen; | |
381 | ++cnt; | |
382 | } | |
383 | while (*value && (cnt < max)) { | |
384 | dopr_outch(buffer, currlen, maxlen, *value++); | |
385 | ++cnt; | |
386 | } | |
387 | while ((padlen < 0) && (cnt < max)) { | |
388 | dopr_outch(buffer, currlen, maxlen, ' '); | |
389 | ++padlen; | |
390 | ++cnt; | |
391 | } | |
392 | } | |
393 | ||
394 | /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */ | |
395 | ||
396 | static void | |
397 | fmtint(char *buffer, size_t *currlen, size_t maxlen, | |
398 | long value, int base, int min, int max, int flags) | |
399 | { | |
400 | unsigned long uvalue; | |
401 | char convert[20]; | |
402 | int signvalue = 0; | |
403 | int place = 0; | |
404 | int spadlen = 0; /* amount to space pad */ | |
405 | int zpadlen = 0; /* amount to zero pad */ | |
406 | int caps = 0; | |
407 | ||
408 | if (max < 0) | |
409 | max = 0; | |
410 | ||
411 | uvalue = value; | |
412 | ||
413 | if (!(flags & DP_F_UNSIGNED)) { | |
414 | if (value < 0) { | |
415 | signvalue = '-'; | |
416 | uvalue = -value; | |
417 | } else if (flags & DP_F_PLUS) /* Do a sign (+/i) */ | |
418 | signvalue = '+'; | |
419 | else if (flags & DP_F_SPACE) | |
420 | signvalue = ' '; | |
421 | } | |
422 | ||
423 | if (flags & DP_F_UP) | |
424 | caps = 1; /* Should characters be upper case? */ | |
425 | ||
426 | do { | |
427 | convert[place++] = | |
428 | (caps? "0123456789ABCDEF":"0123456789abcdef") | |
429 | [uvalue % (unsigned)base]; | |
430 | uvalue = (uvalue / (unsigned)base ); | |
431 | } while (uvalue && (place < 20)); | |
432 | if (place == 20) | |
433 | place--; | |
434 | convert[place] = 0; | |
435 | ||
436 | zpadlen = max - place; | |
437 | spadlen = min - MAX (max, place) - (signvalue ? 1 : 0); | |
438 | if (zpadlen < 0) | |
439 | zpadlen = 0; | |
440 | if (spadlen < 0) | |
441 | spadlen = 0; | |
442 | if (flags & DP_F_ZERO) { | |
443 | zpadlen = MAX(zpadlen, spadlen); | |
444 | spadlen = 0; | |
445 | } | |
446 | if (flags & DP_F_MINUS) | |
447 | spadlen = -spadlen; /* Left Justifty */ | |
448 | ||
449 | ||
450 | /* Spaces */ | |
451 | while (spadlen > 0) { | |
452 | dopr_outch(buffer, currlen, maxlen, ' '); | |
453 | --spadlen; | |
454 | } | |
455 | ||
456 | /* Sign */ | |
457 | if (signvalue) | |
458 | dopr_outch(buffer, currlen, maxlen, signvalue); | |
459 | ||
460 | /* Zeros */ | |
461 | if (zpadlen > 0) { | |
462 | while (zpadlen > 0) { | |
463 | dopr_outch(buffer, currlen, maxlen, '0'); | |
464 | --zpadlen; | |
465 | } | |
466 | } | |
467 | ||
468 | /* Digits */ | |
469 | while (place > 0) | |
470 | dopr_outch(buffer, currlen, maxlen, convert[--place]); | |
471 | ||
472 | /* Left Justified spaces */ | |
473 | while (spadlen < 0) { | |
474 | dopr_outch (buffer, currlen, maxlen, ' '); | |
475 | ++spadlen; | |
476 | } | |
477 | } | |
478 | ||
479 | static long double | |
480 | pow10(int exp) | |
481 | { | |
482 | long double result = 1; | |
483 | ||
484 | while (exp) { | |
485 | result *= 10; | |
486 | exp--; | |
487 | } | |
488 | ||
489 | return result; | |
490 | } | |
491 | ||
492 | static long | |
493 | round(long double value) | |
494 | { | |
495 | long intpart = value; | |
496 | ||
497 | value -= intpart; | |
498 | if (value >= 0.5) | |
499 | intpart++; | |
500 | ||
501 | return intpart; | |
502 | } | |
503 | ||
504 | static void | |
505 | fmtfp(char *buffer, size_t *currlen, size_t maxlen, long double fvalue, | |
506 | int min, int max, int flags) | |
507 | { | |
508 | char iconvert[20]; | |
509 | char fconvert[20]; | |
510 | int signvalue = 0; | |
511 | int iplace = 0; | |
512 | int fplace = 0; | |
513 | int padlen = 0; /* amount to pad */ | |
514 | int zpadlen = 0; | |
515 | int caps = 0; | |
516 | long intpart; | |
517 | long fracpart; | |
518 | long double ufvalue; | |
519 | ||
520 | /* | |
521 | * AIX manpage says the default is 0, but Solaris says the default | |
522 | * is 6, and sprintf on AIX defaults to 6 | |
523 | */ | |
524 | if (max < 0) | |
525 | max = 6; | |
526 | ||
527 | ufvalue = abs_val(fvalue); | |
528 | ||
529 | if (fvalue < 0) | |
530 | signvalue = '-'; | |
531 | else if (flags & DP_F_PLUS) /* Do a sign (+/i) */ | |
532 | signvalue = '+'; | |
533 | else if (flags & DP_F_SPACE) | |
534 | signvalue = ' '; | |
535 | ||
536 | intpart = ufvalue; | |
537 | ||
538 | /* | |
539 | * Sorry, we only support 9 digits past the decimal because of our | |
540 | * conversion method | |
541 | */ | |
542 | if (max > 9) | |
543 | max = 9; | |
544 | ||
545 | /* We "cheat" by converting the fractional part to integer by | |
546 | * multiplying by a factor of 10 | |
547 | */ | |
548 | fracpart = round((pow10 (max)) * (ufvalue - intpart)); | |
549 | ||
550 | if (fracpart >= pow10 (max)) { | |
551 | intpart++; | |
552 | fracpart -= pow10 (max); | |
553 | } | |
554 | ||
555 | /* Convert integer part */ | |
556 | do { | |
557 | iconvert[iplace++] = | |
558 | (caps? "0123456789ABCDEF":"0123456789abcdef")[intpart % 10]; | |
559 | intpart = (intpart / 10); | |
560 | } while(intpart && (iplace < 20)); | |
561 | if (iplace == 20) | |
562 | iplace--; | |
563 | iconvert[iplace] = 0; | |
564 | ||
565 | /* Convert fractional part */ | |
566 | do { | |
567 | fconvert[fplace++] = | |
568 | (caps? "0123456789ABCDEF":"0123456789abcdef")[fracpart % 10]; | |
569 | fracpart = (fracpart / 10); | |
570 | } while(fracpart && (fplace < 20)); | |
571 | if (fplace == 20) | |
572 | fplace--; | |
573 | fconvert[fplace] = 0; | |
574 | ||
575 | /* -1 for decimal point, another -1 if we are printing a sign */ | |
576 | padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0); | |
577 | zpadlen = max - fplace; | |
578 | if (zpadlen < 0) | |
579 | zpadlen = 0; | |
580 | if (padlen < 0) | |
581 | padlen = 0; | |
582 | if (flags & DP_F_MINUS) | |
583 | padlen = -padlen; /* Left Justifty */ | |
584 | ||
585 | if ((flags & DP_F_ZERO) && (padlen > 0)) { | |
586 | if (signvalue) { | |
587 | dopr_outch(buffer, currlen, maxlen, signvalue); | |
588 | --padlen; | |
589 | signvalue = 0; | |
590 | } | |
591 | while (padlen > 0) { | |
592 | dopr_outch(buffer, currlen, maxlen, '0'); | |
593 | --padlen; | |
594 | } | |
595 | } | |
596 | while (padlen > 0) { | |
597 | dopr_outch(buffer, currlen, maxlen, ' '); | |
598 | --padlen; | |
599 | } | |
600 | if (signvalue) | |
601 | dopr_outch(buffer, currlen, maxlen, signvalue); | |
602 | ||
603 | while (iplace > 0) | |
604 | dopr_outch(buffer, currlen, maxlen, iconvert[--iplace]); | |
605 | ||
606 | /* | |
607 | * Decimal point. This should probably use locale to find the correct | |
608 | * char to print out. | |
609 | */ | |
610 | dopr_outch(buffer, currlen, maxlen, '.'); | |
611 | ||
612 | while (fplace > 0) | |
613 | dopr_outch(buffer, currlen, maxlen, fconvert[--fplace]); | |
614 | ||
615 | while (zpadlen > 0) { | |
616 | dopr_outch(buffer, currlen, maxlen, '0'); | |
617 | --zpadlen; | |
618 | } | |
619 | ||
620 | while (padlen < 0) { | |
621 | dopr_outch(buffer, currlen, maxlen, ' '); | |
622 | ++padlen; | |
623 | } | |
624 | } | |
625 | ||
626 | static void | |
627 | dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c) | |
628 | { | |
629 | if (*currlen < maxlen) | |
630 | buffer[(*currlen)++] = c; | |
631 | } | |
632 | #endif /* !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) */ | |
633 | ||
634 | #ifndef HAVE_VSNPRINTF | |
635 | int | |
636 | vsnprintf(char *str, size_t count, const char *fmt, va_list args) | |
637 | { | |
638 | str[0] = 0; | |
639 | dopr(str, count, fmt, args); | |
640 | ||
641 | return(strlen(str)); | |
642 | } | |
643 | #endif /* !HAVE_VSNPRINTF */ | |
644 | ||
645 | #ifndef HAVE_SNPRINTF | |
646 | int | |
647 | snprintf(char *str,size_t count,const char *fmt,...) | |
648 | { | |
649 | va_list ap; | |
650 | ||
651 | va_start(ap, fmt); | |
652 | (void) vsnprintf(str, count, fmt, ap); | |
653 | va_end(ap); | |
654 | ||
655 | return(strlen(str)); | |
656 | } | |
657 | ||
658 | #ifdef TEST_SNPRINTF | |
659 | int | |
660 | main(void) | |
661 | { | |
662 | #define LONG_STRING 1024 | |
663 | char buf1[LONG_STRING]; | |
664 | char buf2[LONG_STRING]; | |
665 | char *fp_fmt[] = { | |
666 | "%-1.5f", | |
667 | "%1.5f", | |
668 | "%123.9f", | |
669 | "%10.5f", | |
670 | "% 10.5f", | |
671 | "%+22.9f", | |
672 | "%+4.9f", | |
673 | "%01.3f", | |
674 | "%4f", | |
675 | "%3.1f", | |
676 | "%3.2f", | |
677 | NULL | |
678 | }; | |
679 | double fp_nums[] = { | |
680 | -1.5, | |
681 | 134.21, | |
682 | 91340.2, | |
683 | 341.1234, | |
684 | 0203.9, | |
685 | 0.96, | |
686 | 0.996, | |
687 | 0.9996, | |
688 | 1.996, | |
689 | 4.136, | |
690 | 0 | |
691 | }; | |
692 | char *int_fmt[] = { | |
693 | "%-1.5d", | |
694 | "%1.5d", | |
695 | "%123.9d", | |
696 | "%5.5d", | |
697 | "%10.5d", | |
698 | "% 10.5d", | |
699 | "%+22.33d", | |
700 | "%01.3d", | |
701 | "%4d", | |
702 | "%lld", | |
703 | "%qd", | |
704 | NULL | |
705 | }; | |
706 | long long int_nums[] = { -1, 134, 91340, 341, 0203, 0, 9999999 }; | |
707 | int x, y; | |
708 | int fail = 0; | |
709 | int num = 0; | |
710 | ||
711 | printf("Testing snprintf format codes against system sprintf...\n"); | |
712 | ||
713 | for (x = 0; fp_fmt[x] != NULL ; x++) { | |
714 | for (y = 0; fp_nums[y] != 0 ; y++) { | |
715 | snprintf(buf1, sizeof (buf1), fp_fmt[x], fp_nums[y]); | |
716 | sprintf (buf2, fp_fmt[x], fp_nums[y]); | |
717 | if (strcmp (buf1, buf2)) { | |
718 | printf("snprintf doesn't match Format: %s\n\t" | |
719 | "snprintf = %s\n\tsprintf = %s\n", | |
720 | fp_fmt[x], buf1, buf2); | |
721 | fail++; | |
722 | } | |
723 | num++; | |
724 | } | |
725 | } | |
726 | for (x = 0; int_fmt[x] != NULL ; x++) { | |
727 | for (y = 0; int_nums[y] != 0 ; y++) { | |
728 | snprintf(buf1, sizeof (buf1), int_fmt[x], int_nums[y]); | |
729 | sprintf(buf2, int_fmt[x], int_nums[y]); | |
730 | if (strcmp (buf1, buf2)) { | |
731 | printf("snprintf doesn't match Format: %s\n\t" | |
732 | "snprintf = %s\n\tsprintf = %s\n", | |
733 | int_fmt[x], buf1, buf2); | |
734 | fail++; | |
735 | } | |
736 | num++; | |
737 | } | |
738 | } | |
739 | printf("%d tests failed out of %d.\n", fail, num); | |
740 | return(0); | |
741 | } | |
742 | #endif /* SNPRINTF_TEST */ | |
743 | ||
744 | #endif /* !HAVE_SNPRINTF */ |