2 * NOTE: If you change this file, please merge it into rsync, samba, etc.
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
12 /**************************************************************
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...
19 * snprintf() is used instead of sprintf() as it does limit checks
20 * for string length. This covers a nasty loophole.
22 * The other functions are there to prevent NULL pointers from
23 * causing nast effects.
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.
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, formatted 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 -I.. -DTEST_SNPRINTF -o snprintf snprintf.c -lm
41 * and run snprintf for results.
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.
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.
52 * Andrew Tridgell (tridge@samba.org) Oct 1998
53 * fixed handling of %.0f
54 * added test for HAVE_LONG_DOUBLE
56 * tridge@samba.org, idra@samba.org, April 2001
57 * got rid of fcvt code (twas buggy and made testing harder)
60 * date: 2002/12/19 19:56:31; author: herb; state: Exp; lines: +2 -0
61 * actually print args for %g and %e
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.
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
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
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 * added the "Ollie" test to the floating point ones.
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.
87 * Martin Pool (mbp@samba.org) May 2003
88 * Put in a prototype for dummy_snprintf() to quiet compiler warnings.
90 * Move #endif to make sure VA_COPY, LDOUBLE, etc are defined even
91 * if the C library has some snprintf functions already.
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.
99 * Simo Sorce (idra@samba.org) Jan 2006
101 * Add support for position independent parameters
102 * fix fmtstr now it conforms to sprintf wrt min.max
104 **************************************************************/
108 #ifdef TEST_SNPRINTF /* need math library headers for testing */
110 /* In test mode, we pretend that this system doesn't have any snprintf
111 * functions, regardless of what config.h says. */
112 # undef HAVE_SNPRINTF
113 # undef HAVE_VSNPRINTF
114 # undef HAVE_C99_VSNPRINTF
115 # undef HAVE_ASPRINTF
116 # undef HAVE_VASPRINTF
118 #endif /* TEST_SNPRINTF */
124 #ifdef HAVE_STRINGS_H
130 #include <sys/types.h>
136 #if defined(HAVE_SNPRINTF) && defined(HAVE_VSNPRINTF) && defined(HAVE_C99_VSNPRINTF)
137 /* only include stdio.h if we are not re-defining snprintf or vsnprintf */
139 /* make the compiler happy with an empty file */
140 void dummy_snprintf(void);
141 void dummy_snprintf(void) {}
142 #endif /* HAVE_SNPRINTF, etc */
148 #ifdef HAVE_LONG_DOUBLE
149 #define LDOUBLE long double
151 #define LDOUBLE double
154 #if !defined HAVE_LONG_LONG && SIZEOF_LONG_LONG
155 #define HAVE_LONG_LONG 1
157 #ifdef HAVE_LONG_LONG
158 #define LLONG long long
164 #if defined HAVE_VA_COPY || defined va_copy
165 #define VA_COPY(dest, src) va_copy(dest, src)
167 #ifdef HAVE___VA_COPY
168 #define VA_COPY(dest, src) __va_copy(dest, src)
170 #define VA_COPY(dest, src) (dest) = (src)
175 /* yes this really must be a ||. Don't muck with this (tridge) */
176 #if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
179 * dopr(): poor man's version of doprintf
182 /* format read states */
183 #define DP_S_DEFAULT 0
192 /* format flags - Bits */
193 #define DP_F_MINUS (1 << 0)
194 #define DP_F_PLUS (1 << 1)
195 #define DP_F_SPACE (1 << 2)
196 #define DP_F_NUM (1 << 3)
197 #define DP_F_ZERO (1 << 4)
198 #define DP_F_UP (1 << 5)
199 #define DP_F_UNSIGNED (1 << 6)
201 /* Conversion Flags */
205 #define DP_C_LDOUBLE 4
210 #define CNK_FMT_STR 0
222 #define char_to_int(p) ((p)- '0')
224 #define MAX(p,q) (((p) >= (q)) ? (p) : (q))
228 int type; /* chunk type */
229 int num; /* parameter number */
240 struct pr_chunk *min_star;
241 struct pr_chunk *max_star;
242 struct pr_chunk *next;
246 struct pr_chunk **chunks;
250 static int dopr(char *buffer, size_t maxlen, const char *format,
252 static void fmtstr(char *buffer, size_t *currlen, size_t maxlen,
253 char *value, int flags, int min, int max);
254 static void fmtint(char *buffer, size_t *currlen, size_t maxlen,
255 LLONG value, int base, int min, int max, int flags);
256 static void fmtfp(char *buffer, size_t *currlen, size_t maxlen,
257 LDOUBLE fvalue, int min, int max, int flags);
258 static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c);
259 static struct pr_chunk *new_chunk(void);
260 static int add_cnk_list_entry(struct pr_chunk_x **list,
261 int max_num, struct pr_chunk *chunk);
263 static int dopr(char *buffer, size_t maxlen, const char *format, va_list args_in)
273 struct pr_chunk *chunks = NULL;
274 struct pr_chunk *cnk = NULL;
275 struct pr_chunk_x *clist = NULL;
279 VA_COPY(args, args_in);
281 state = DP_S_DEFAULT;
290 /* retrieve the string structure as chunks */
291 while (state != DP_S_DONE) {
299 cnk->next = new_chunk();
305 if (!chunks) chunks = cnk;
311 cnk->type = CNK_FMT_STR;
312 cnk->start = format - base -1;
313 while ((ch != '\0') && (ch != '%')) ch = *format++;
314 cnk->len = format - base - cnk->start -1;
320 cnk->flags |= DP_F_MINUS;
324 cnk->flags |= DP_F_PLUS;
328 cnk->flags |= DP_F_SPACE;
332 cnk->flags |= DP_F_NUM;
336 cnk->flags |= DP_F_ZERO;
340 /* internationalization not supported yet */
349 if (isdigit((unsigned char)ch)) {
350 cnk->min = 10 * cnk->min + char_to_int (ch);
352 } else if (ch == '$') {
353 if (!pfirst && !pflag) {
354 /* parameters must be all positioned or none */
361 if (cnk->min == 0) /* what ?? */
366 } else if (ch == '*') {
367 if (pfirst) pfirst = 0;
368 cnk->min_star = new_chunk();
369 if (!cnk->min_star) /* out of memory :-( */
371 cnk->min_star->type = CNK_INT;
375 if (!isdigit((unsigned char)ch)) {
376 /* parameters must be all positioned or none */
379 for (num = 0; isdigit((unsigned char)ch); ch = *format++) {
380 num = 10 * num + char_to_int(ch);
382 cnk->min_star->num = num;
383 if (ch != '$') /* what ?? */
386 cnk->min_star->num = ++pnum;
388 max_pos = add_cnk_list_entry(&clist, max_pos, cnk->min_star);
389 if (max_pos == 0) /* out of memory :-( */
394 if (pfirst) pfirst = 0;
407 if (isdigit((unsigned char)ch)) {
410 cnk->max = 10 * cnk->max + char_to_int (ch);
412 } else if (ch == '$') {
413 if (!pfirst && !pflag) {
414 /* parameters must be all positioned or none */
417 if (cnk->max <= 0) /* what ?? */
422 } else if (ch == '*') {
423 cnk->max_star = new_chunk();
424 if (!cnk->max_star) /* out of memory :-( */
426 cnk->max_star->type = CNK_INT;
430 if (!isdigit((unsigned char)ch)) {
431 /* parameters must be all positioned or none */
434 for (num = 0; isdigit((unsigned char)ch); ch = *format++) {
435 num = 10 * num + char_to_int(ch);
437 cnk->max_star->num = num;
438 if (ch != '$') /* what ?? */
441 cnk->max_star->num = ++pnum;
443 max_pos = add_cnk_list_entry(&clist, max_pos, cnk->max_star);
444 if (max_pos == 0) /* out of memory :-( */
456 cnk->cflags = DP_C_SHORT;
459 cnk->cflags = DP_C_CHAR;
464 cnk->cflags = DP_C_LONG;
466 if (ch == 'l') { /* It's a long long */
467 cnk->cflags = DP_C_LLONG;
472 cnk->cflags = DP_C_LDOUBLE;
476 cnk->cflags = DP_C_SIZET;
485 if (cnk->num == 0) cnk->num = ++pnum;
486 max_pos = add_cnk_list_entry(&clist, max_pos, cnk);
487 if (max_pos == 0) /* out of memory :-( */
496 cnk->type = CNK_OCTAL;
497 cnk->flags |= DP_F_UNSIGNED;
500 cnk->type = CNK_UINT;
501 cnk->flags |= DP_F_UNSIGNED;
504 cnk->flags |= DP_F_UP;
507 cnk->flags |= DP_F_UNSIGNED;
510 /* hex float not supported yet */
514 cnk->flags |= DP_F_UP;
516 /* hex float not supported yet */
520 cnk->type = CNK_FLOAT;
523 cnk->type = CNK_CHAR;
526 cnk->type = CNK_STRING;
530 cnk->flags |= DP_F_UNSIGNED;
536 cnk->type = CNK_PRCNT;
539 /* Unknown, bail out*/
543 state = DP_S_DEFAULT;
549 break; /* some picky compilers need this */
553 /* retrieve the format arguments */
554 for (pnum = 0; pnum < max_pos; pnum++) {
557 if (clist[pnum].num == 0) {
558 /* ignoring a parameter should not be permitted
559 * all parameters must be matched at least once
560 * BUT seem some system ignore this rule ...
561 * at least my glibc based system does --SSS
563 #ifdef DEBUG_SNPRINTF
564 printf("parameter at position %d not used\n", pnum+1);
566 /* eat the parameter */
570 for (i = 1; i < clist[pnum].num; i++) {
571 if (clist[pnum].chunks[0]->type != clist[pnum].chunks[i]->type) {
573 * all the references to a parameter
574 * must be of the same type
579 cnk = clist[pnum].chunks[0];
582 if (cnk->cflags == DP_C_SHORT)
583 cnk->value = va_arg (args, int);
584 else if (cnk->cflags == DP_C_LONG)
585 cnk->value = va_arg (args, long int);
586 else if (cnk->cflags == DP_C_LLONG)
587 cnk->value = va_arg (args, LLONG);
588 else if (cnk->cflags == DP_C_SIZET)
589 cnk->value = va_arg (args, ssize_t);
591 cnk->value = va_arg (args, int);
593 for (i = 1; i < clist[pnum].num; i++) {
594 clist[pnum].chunks[i]->value = cnk->value;
601 if (cnk->cflags == DP_C_SHORT)
602 cnk->value = va_arg (args, unsigned int);
603 else if (cnk->cflags == DP_C_LONG)
604 cnk->value = (unsigned long int)va_arg (args, unsigned long int);
605 else if (cnk->cflags == DP_C_LLONG)
606 cnk->value = (LLONG)va_arg (args, unsigned LLONG);
607 else if (cnk->cflags == DP_C_SIZET)
608 cnk->value = (size_t)va_arg (args, size_t);
610 cnk->value = (unsigned int)va_arg (args, unsigned int);
612 for (i = 1; i < clist[pnum].num; i++) {
613 clist[pnum].chunks[i]->value = cnk->value;
618 if (cnk->cflags == DP_C_LDOUBLE)
619 cnk->fvalue = va_arg (args, LDOUBLE);
621 cnk->fvalue = va_arg (args, double);
623 for (i = 1; i < clist[pnum].num; i++) {
624 clist[pnum].chunks[i]->fvalue = cnk->fvalue;
629 cnk->value = va_arg (args, int);
631 for (i = 1; i < clist[pnum].num; i++) {
632 clist[pnum].chunks[i]->value = cnk->value;
637 cnk->strvalue = va_arg (args, char *);
638 if (!cnk->strvalue) cnk->strvalue = "(NULL)";
640 for (i = 1; i < clist[pnum].num; i++) {
641 clist[pnum].chunks[i]->strvalue = cnk->strvalue;
646 cnk->strvalue = va_arg (args, void *);
647 for (i = 1; i < clist[pnum].num; i++) {
648 clist[pnum].chunks[i]->strvalue = cnk->strvalue;
653 if (cnk->cflags == DP_C_CHAR)
654 cnk->pnum = va_arg (args, char *);
655 else if (cnk->cflags == DP_C_SHORT)
656 cnk->pnum = va_arg (args, short int *);
657 else if (cnk->cflags == DP_C_LONG)
658 cnk->pnum = va_arg (args, long int *);
659 else if (cnk->cflags == DP_C_LLONG)
660 cnk->pnum = va_arg (args, LLONG *);
661 else if (cnk->cflags == DP_C_SIZET)
662 cnk->pnum = va_arg (args, ssize_t *);
664 cnk->pnum = va_arg (args, int *);
666 for (i = 1; i < clist[pnum].num; i++) {
667 clist[pnum].chunks[i]->pnum = cnk->pnum;
679 /* print out the actual string from chunks */
685 if (cnk->min_star) min = cnk->min_star->value;
687 if (cnk->max_star) max = cnk->max_star->value;
693 if (maxlen != 0 && maxlen > currlen) {
694 if (maxlen > (currlen + cnk->len)) len = cnk->len;
695 else len = maxlen - currlen;
697 memcpy(&(buffer[currlen]), &(base[cnk->start]), len);
705 fmtint (buffer, &currlen, maxlen, cnk->value, 10, min, max, cnk->flags);
709 fmtint (buffer, &currlen, maxlen, cnk->value, 8, min, max, cnk->flags);
713 fmtint (buffer, &currlen, maxlen, cnk->value, 16, min, max, cnk->flags);
717 fmtfp (buffer, &currlen, maxlen, cnk->fvalue, min, max, cnk->flags);
721 dopr_outch (buffer, &currlen, maxlen, cnk->value);
726 max = strlen(cnk->strvalue);
728 fmtstr (buffer, &currlen, maxlen, cnk->strvalue, cnk->flags, min, max);
732 fmtint (buffer, &currlen, maxlen, (long)(cnk->strvalue), 16, min, max, cnk->flags);
736 if (cnk->cflags == DP_C_CHAR)
737 *((char *)(cnk->pnum)) = (char)currlen;
738 else if (cnk->cflags == DP_C_SHORT)
739 *((short int *)(cnk->pnum)) = (short int)currlen;
740 else if (cnk->cflags == DP_C_LONG)
741 *((long int *)(cnk->pnum)) = (long int)currlen;
742 else if (cnk->cflags == DP_C_LLONG)
743 *((LLONG *)(cnk->pnum)) = (LLONG)currlen;
744 else if (cnk->cflags == DP_C_SIZET)
745 *((ssize_t *)(cnk->pnum)) = (ssize_t)currlen;
747 *((int *)(cnk->pnum)) = (int)currlen;
751 dopr_outch (buffer, &currlen, maxlen, '%');
761 if (currlen < maxlen - 1)
762 buffer[currlen] = '\0';
764 buffer[maxlen - 1] = '\0';
777 for (pnum = 0; pnum < max_pos; pnum++) {
778 if (clist[pnum].chunks) free(clist[pnum].chunks);
785 static void fmtstr(char *buffer, size_t *currlen, size_t maxlen,
786 char *value, int flags, int min, int max)
788 int padlen, strln; /* amount to pad */
791 #ifdef DEBUG_SNPRINTF
792 printf("fmtstr min=%d max=%d s=[%s]\n", min, max, value);
798 for (strln = 0; strln < max && value[strln]; ++strln); /* strlen */
799 padlen = min - strln;
802 if (flags & DP_F_MINUS)
803 padlen = -padlen; /* Left Justify */
806 dopr_outch (buffer, currlen, maxlen, ' ');
809 while (*value && (cnt < max)) {
810 dopr_outch (buffer, currlen, maxlen, *value++);
814 dopr_outch (buffer, currlen, maxlen, ' ');
819 /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
821 static void fmtint(char *buffer, size_t *currlen, size_t maxlen,
822 LLONG value, int base, int min, int max, int flags)
825 unsigned LLONG uvalue;
828 int spadlen = 0; /* amount to space pad */
829 int zpadlen = 0; /* amount to zero pad */
837 if(!(flags & DP_F_UNSIGNED)) {
842 if (flags & DP_F_PLUS) /* Do a sign (+/i) */
844 else if (flags & DP_F_SPACE)
849 if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
853 (caps? "0123456789ABCDEF":"0123456789abcdef")
854 [uvalue % (unsigned)base ];
855 uvalue = (uvalue / (unsigned)base );
856 } while(uvalue && (place < 20));
857 if (place == 20) place--;
860 zpadlen = max - place;
861 spadlen = min - MAX (max, place) - (signvalue ? 1 : 0);
862 if (zpadlen < 0) zpadlen = 0;
863 if (spadlen < 0) spadlen = 0;
864 if (flags & DP_F_ZERO) {
865 zpadlen = MAX(zpadlen, spadlen);
868 if (flags & DP_F_MINUS)
869 spadlen = -spadlen; /* Left Justifty */
871 #ifdef DEBUG_SNPRINTF
872 printf("zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
873 zpadlen, spadlen, min, max, place);
877 while (spadlen > 0) {
878 dopr_outch (buffer, currlen, maxlen, ' ');
884 dopr_outch (buffer, currlen, maxlen, signvalue);
888 while (zpadlen > 0) {
889 dopr_outch (buffer, currlen, maxlen, '0');
896 dopr_outch (buffer, currlen, maxlen, convert[--place]);
898 /* Left Justified spaces */
899 while (spadlen < 0) {
900 dopr_outch (buffer, currlen, maxlen, ' ');
905 static LDOUBLE abs_val(LDOUBLE value)
907 LDOUBLE result = value;
915 static LDOUBLE POW10(int exp)
927 static LLONG ROUND(LDOUBLE value)
931 intpart = (LLONG)value;
932 value = value - intpart;
933 if (value >= 0.5) intpart++;
938 /* a replacement for modf that doesn't need the math library. Should
939 be portable, but slow */
940 static double my_modf(double x0, double *iptr)
947 for (i=0;i<100;i++) {
949 if (l <= (x+1) && l >= (x-1)) break;
955 /* yikes! the number is beyond what we can handle. What do we do? */
964 ret = my_modf(x0-l*f, &i2);
974 static void fmtfp (char *buffer, size_t *currlen, size_t maxlen,
975 LDOUBLE fvalue, int min, int max, int flags)
983 int padlen = 0; /* amount to pad */
992 * AIX manpage says the default is 0, but Solaris says the default
993 * is 6, and sprintf on AIX defaults to 6
998 ufvalue = abs_val (fvalue);
1003 if (flags & DP_F_PLUS) { /* Do a sign (+/i) */
1006 if (flags & DP_F_SPACE)
1012 if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
1016 if (max == 0) ufvalue += 0.5; /* if max = 0 we must round */
1020 * Sorry, we only support 9 digits past the decimal because of our
1026 /* We "cheat" by converting the fractional part to integer by
1027 * multiplying by a factor of 10
1031 my_modf(temp, &intpart);
1033 fracpart = ROUND((POW10(max)) * (ufvalue - intpart));
1035 if (fracpart >= POW10(max)) {
1037 fracpart -= POW10(max);
1041 /* Convert integer part */
1044 my_modf(temp, &intpart);
1045 idx = (int) ((temp -intpart +0.05)* 10.0);
1046 /* idx = (int) (((double)(temp*0.1) -intpart +0.05) *10.0); */
1047 /* printf ("%llf, %f, %x\n", temp, intpart, idx); */
1048 iconvert[iplace++] =
1049 (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
1050 } while (intpart && (iplace < 311));
1051 if (iplace == 311) iplace--;
1052 iconvert[iplace] = 0;
1054 /* Convert fractional part */
1058 temp = fracpart*0.1;
1059 my_modf(temp, &fracpart);
1060 idx = (int) ((temp -fracpart +0.05)* 10.0);
1061 /* idx = (int) ((((temp/10) -fracpart) +0.05) *10); */
1062 /* printf ("%lf, %lf, %ld\n", temp, fracpart, idx ); */
1063 fconvert[fplace++] =
1064 (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
1065 } while(fracpart && (fplace < 311));
1066 if (fplace == 311) fplace--;
1068 fconvert[fplace] = 0;
1070 /* -1 for decimal point, another -1 if we are printing a sign */
1071 padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
1072 zpadlen = max - fplace;
1073 if (zpadlen < 0) zpadlen = 0;
1076 if (flags & DP_F_MINUS)
1077 padlen = -padlen; /* Left Justifty */
1079 if ((flags & DP_F_ZERO) && (padlen > 0)) {
1081 dopr_outch (buffer, currlen, maxlen, signvalue);
1085 while (padlen > 0) {
1086 dopr_outch (buffer, currlen, maxlen, '0');
1090 while (padlen > 0) {
1091 dopr_outch (buffer, currlen, maxlen, ' ');
1095 dopr_outch (buffer, currlen, maxlen, signvalue);
1098 dopr_outch (buffer, currlen, maxlen, iconvert[--iplace]);
1100 #ifdef DEBUG_SNPRINTF
1101 printf("fmtfp: fplace=%d zpadlen=%d\n", fplace, zpadlen);
1105 * Decimal point. This should probably use locale to find the correct
1106 * char to print out.
1109 dopr_outch (buffer, currlen, maxlen, '.');
1111 while (zpadlen > 0) {
1112 dopr_outch (buffer, currlen, maxlen, '0');
1117 dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]);
1120 while (padlen < 0) {
1121 dopr_outch (buffer, currlen, maxlen, ' ');
1126 static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c)
1128 if (*currlen < maxlen) {
1129 buffer[(*currlen)] = c;
1134 static struct pr_chunk *new_chunk(void) {
1135 struct pr_chunk *new_c = (struct pr_chunk *)malloc(sizeof(struct pr_chunk));
1143 new_c->min_star = NULL;
1145 new_c->max_star = NULL;
1152 new_c->strvalue = NULL;
1159 static int add_cnk_list_entry(struct pr_chunk_x **list,
1160 int max_num, struct pr_chunk *chunk) {
1161 struct pr_chunk_x *l;
1162 struct pr_chunk **c;
1167 if (chunk->num > max_num) {
1170 if (*list == NULL) {
1171 l = (struct pr_chunk_x *)malloc(sizeof(struct pr_chunk_x) * max);
1174 l = (struct pr_chunk_x *)realloc(*list, sizeof(struct pr_chunk_x) * max);
1178 for (i = 0; i < max; i++) {
1179 if ((*list)[i].chunks) free((*list)[i].chunks);
1183 for (i = pos; i < max; i++) {
1193 cnum = l[i].num + 1;
1194 if (l[i].chunks == NULL) {
1195 c = (struct pr_chunk **)malloc(sizeof(struct pr_chunk *) * cnum);
1197 c = (struct pr_chunk **)realloc(l[i].chunks, sizeof(struct pr_chunk *) * cnum);
1200 for (i = 0; i < max; i++) {
1201 if (l[i].chunks) free(l[i].chunks);
1205 c[l[i].num] = chunk;
1213 int rsync_vsnprintf (char *str, size_t count, const char *fmt, va_list args)
1215 return dopr(str, count, fmt, args);
1217 #define vsnprintf rsync_vsnprintf
1220 /* yes this really must be a ||. Don't muck with this (tridge)
1222 * The logic for these two is that we need our own definition if the
1223 * OS *either* has no definition of *sprintf, or if it does have one
1224 * that doesn't work properly according to the autoconf test.
1226 #if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
1227 int rsync_snprintf(char *str,size_t count,const char *fmt,...)
1233 ret = vsnprintf(str, count, fmt, ap);
1237 #define snprintf rsync_snprintf
1240 #ifndef HAVE_VASPRINTF
1241 int vasprintf(char **ptr, const char *format, va_list ap)
1247 ret = vsnprintf(NULL, 0, format, ap2);
1249 if (ret < 0) return ret;
1251 (*ptr) = (char *)malloc(ret+1);
1252 if (!*ptr) return -1;
1255 ret = vsnprintf(*ptr, ret+1, format, ap2);
1263 #ifndef HAVE_ASPRINTF
1264 int asprintf(char **ptr, const char *format, ...)
1270 va_start(ap, format);
1271 ret = vasprintf(ptr, format, ap);
1278 #ifdef TEST_SNPRINTF
1280 int sprintf(char *str,const char *fmt,...);
1281 int printf(const char *fmt,...);
1307 double fp_nums[] = { 6442452944.1234, -1.5, 134.21, 91340.2, 341.1234, 203.9, 0.96, 0.996,
1308 0.9996, 1.996, 4.136, 5.030201, 0.00205,
1323 long int_nums[] = { -1, 134, 91340, 341, 0203, 1234567890, 0};
1339 char *str_vals[] = {"hello", "a", "", "a longer string", NULL};
1340 #ifdef HAVE_LONG_LONG
1345 LLONG ll_nums[] = { 134, 91340, 341, 0203, 1234567890, 128006186140000000LL, 0};
1356 size_t ss_nums[] = {134, 91340, 123456789, 0203, 1234567890, 0};
1358 printf ("Testing snprintf format codes against system sprintf...\n");
1360 for (x = 0; fp_fmt[x] ; x++) {
1361 for (y = 0; fp_nums[y] != 0 ; y++) {
1362 buf1[0] = buf2[0] = '\0';
1363 l1 = snprintf(buf1, sizeof(buf1), fp_fmt[x], fp_nums[y]);
1364 l2 = sprintf (buf2, fp_fmt[x], fp_nums[y]);
1365 buf1[1023] = buf2[1023] = '\0';
1366 if (strcmp (buf1, buf2) || (l1 != l2)) {
1367 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1368 fp_fmt[x], l1, buf1, l2, buf2);
1375 for (x = 0; int_fmt[x] ; x++) {
1376 for (y = 0; int_nums[y] != 0 ; y++) {
1377 buf1[0] = buf2[0] = '\0';
1378 l1 = snprintf(buf1, sizeof(buf1), int_fmt[x], int_nums[y]);
1379 l2 = sprintf (buf2, int_fmt[x], int_nums[y]);
1380 buf1[1023] = buf2[1023] = '\0';
1381 if (strcmp (buf1, buf2) || (l1 != l2)) {
1382 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1383 int_fmt[x], l1, buf1, l2, buf2);
1390 for (x = 0; str_fmt[x] ; x++) {
1391 for (y = 0; str_vals[y] != 0 ; y++) {
1392 buf1[0] = buf2[0] = '\0';
1393 l1 = snprintf(buf1, sizeof(buf1), str_fmt[x], str_vals[y]);
1394 l2 = sprintf (buf2, str_fmt[x], str_vals[y]);
1395 buf1[1023] = buf2[1023] = '\0';
1396 if (strcmp (buf1, buf2) || (l1 != l2)) {
1397 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1398 str_fmt[x], l1, buf1, l2, buf2);
1405 #ifdef HAVE_LONG_LONG
1406 for (x = 0; ll_fmt[x] ; x++) {
1407 for (y = 0; ll_nums[y] != 0 ; y++) {
1408 buf1[0] = buf2[0] = '\0';
1409 l1 = snprintf(buf1, sizeof(buf1), ll_fmt[x], ll_nums[y]);
1410 l2 = sprintf (buf2, ll_fmt[x], ll_nums[y]);
1411 buf1[1023] = buf2[1023] = '\0';
1412 if (strcmp (buf1, buf2) || (l1 != l2)) {
1413 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1414 ll_fmt[x], l1, buf1, l2, buf2);
1424 buf1[0] = buf2[0] = '\0';
1425 if ((buf3 = malloc(BUFSZ)) == NULL) {
1429 memset(buf3, 'a', BUFSZ);
1430 snprintf(buf1, sizeof(buf1), "%.*s", 1, buf3);
1432 if (strcmp(buf1, "a") != 0) {
1433 printf("length limit buf1 '%s' expected 'a'\n", buf1);
1438 buf1[0] = buf2[0] = '\0';
1439 l1 = snprintf(buf1, sizeof(buf1), "%4$*1$d %2$s %3$*1$.*1$f", 3, "pos test", 12.3456, 9);
1440 l2 = sprintf(buf2, "%4$*1$d %2$s %3$*1$.*1$f", 3, "pos test", 12.3456, 9);
1441 buf1[1023] = buf2[1023] = '\0';
1442 if (strcmp(buf1, buf2) || (l1 != l2)) {
1443 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1444 "%4$*1$d %2$s %3$*1$.*1$f", l1, buf1, l2, buf2);
1448 buf1[0] = buf2[0] = '\0';
1449 l1 = snprintf(buf1, sizeof(buf1), "%4$*4$d %2$s %3$*4$.*4$f", 3, "pos test", 12.3456, 9);
1450 l2 = sprintf(buf2, "%4$*4$d %2$s %3$*4$.*4$f", 3, "pos test", 12.3456, 9);
1451 buf1[1023] = buf2[1023] = '\0';
1452 if (strcmp(buf1, buf2)) {
1453 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1454 "%4$*1$d %2$s %3$*1$.*1$f", l1, buf1, l2, buf2);
1458 for (x = 0; ss_fmt[x] ; x++) {
1459 for (y = 0; ss_nums[y] != 0 ; y++) {
1460 buf1[0] = buf2[0] = '\0';
1461 l1 = snprintf(buf1, sizeof(buf1), ss_fmt[x], ss_nums[y]);
1462 l2 = sprintf (buf2, ss_fmt[x], ss_nums[y]);
1463 buf1[1023] = buf2[1023] = '\0';
1464 if (strcmp (buf1, buf2) || (l1 != l2)) {
1465 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1466 ss_fmt[x], l1, buf1, l2, buf2);
1473 buf1[0] = buf2[0] = '\0';
1474 l1 = snprintf(buf1, sizeof(buf1), "%lld", (LLONG)1234567890);
1475 l2 = sprintf(buf2, "%lld", (LLONG)1234567890);
1476 buf1[1023] = buf2[1023] = '\0';
1477 if (strcmp(buf1, buf2)) {
1478 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1479 "%lld", l1, buf1, l2, buf2);
1483 buf1[0] = buf2[0] = '\0';
1484 l1 = snprintf(buf1, sizeof(buf1), "%Lf", (LDOUBLE)890.1234567890123);
1485 l2 = sprintf(buf2, "%Lf", (LDOUBLE)890.1234567890123);
1486 buf1[1023] = buf2[1023] = '\0';
1487 if (strcmp(buf1, buf2)) {
1488 printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
1489 "%Lf", l1, buf1, l2, buf2);
1493 printf ("%d tests failed out of %d.\n", fail, num);
1495 printf("seeing how many digits we support\n");
1497 double v0 = 0.12345678901234567890123456789012345678901;
1498 for (x=0; x<100; x++) {
1499 double p = pow(10, x);
1501 snprintf(buf1, sizeof(buf1), "%1.1f", r);
1502 sprintf(buf2, "%1.1f", r);
1503 if (strcmp(buf1, buf2)) {
1504 printf("we seem to support %d digits\n", x-1);
1512 #endif /* TEST_SNPRINTF */