summaryrefslogtreecommitdiffstats
path: root/openbsd-compat/bsd-snprintf.c
diff options
context:
space:
mode:
Diffstat (limited to 'openbsd-compat/bsd-snprintf.c')
-rw-r--r--openbsd-compat/bsd-snprintf.c880
1 files changed, 880 insertions, 0 deletions
diff --git a/openbsd-compat/bsd-snprintf.c b/openbsd-compat/bsd-snprintf.c
new file mode 100644
index 0000000..f27b9d8
--- /dev/null
+++ b/openbsd-compat/bsd-snprintf.c
@@ -0,0 +1,880 @@
+/*
+ * Copyright Patrick Powell 1995
+ * This code is based on code written by Patrick Powell (papowell@astart.com)
+ * It may be used for any purpose as long as this notice remains intact
+ * on all source code distributions
+ */
+
+/**************************************************************
+ * Original:
+ * Patrick Powell Tue Apr 11 09:48:21 PDT 1995
+ * A bombproof version of doprnt (dopr) included.
+ * Sigh. This sort of thing is always nasty do deal with. Note that
+ * the version here does not include floating point...
+ *
+ * snprintf() is used instead of sprintf() as it does limit checks
+ * for string length. This covers a nasty loophole.
+ *
+ * The other functions are there to prevent NULL pointers from
+ * causing nast effects.
+ *
+ * More Recently:
+ * Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43
+ * This was ugly. It is still ugly. I opted out of floating point
+ * numbers, but the formatter understands just about everything
+ * from the normal C string format, at least as far as I can tell from
+ * the Solaris 2.5 printf(3S) man page.
+ *
+ * Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1
+ * Ok, added some minimal floating point support, which means this
+ * probably requires libm on most operating systems. Don't yet
+ * support the exponent (e,E) and sigfig (g,G). Also, fmtint()
+ * was pretty badly broken, it just wasn't being exercised in ways
+ * which showed it, so that's been fixed. Also, formatted the code
+ * to mutt conventions, and removed dead code left over from the
+ * original. Also, there is now a builtin-test, just compile with:
+ * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm
+ * and run snprintf for results.
+ *
+ * Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i
+ * The PGP code was using unsigned hexadecimal formats.
+ * Unfortunately, unsigned formats simply didn't work.
+ *
+ * Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8
+ * The original code assumed that both snprintf() and vsnprintf() were
+ * missing. Some systems only have snprintf() but not vsnprintf(), so
+ * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
+ *
+ * Andrew Tridgell (tridge@samba.org) Oct 1998
+ * fixed handling of %.0f
+ * added test for HAVE_LONG_DOUBLE
+ *
+ * tridge@samba.org, idra@samba.org, April 2001
+ * got rid of fcvt code (twas buggy and made testing harder)
+ * added C99 semantics
+ *
+ * date: 2002/12/19 19:56:31; author: herb; state: Exp; lines: +2 -0
+ * actually print args for %g and %e
+ *
+ * date: 2002/06/03 13:37:52; author: jmcd; state: Exp; lines: +8 -0
+ * Since includes.h isn't included here, VA_COPY has to be defined here. I don't
+ * see any include file that is guaranteed to be here, so I'm defining it
+ * locally. Fixes AIX and Solaris builds.
+ *
+ * date: 2002/06/03 03:07:24; author: tridge; state: Exp; lines: +5 -13
+ * put the ifdef for HAVE_VA_COPY in one place rather than in lots of
+ * functions
+ *
+ * date: 2002/05/17 14:51:22; author: jmcd; state: Exp; lines: +21 -4
+ * Fix usage of va_list passed as an arg. Use __va_copy before using it
+ * when it exists.
+ *
+ * date: 2002/04/16 22:38:04; author: idra; state: Exp; lines: +20 -14
+ * Fix incorrect zpadlen handling in fmtfp.
+ * Thanks to Ollie Oldham <ollie.oldham@metro-optix.com> for spotting it.
+ * few mods to make it easier to compile the tests.
+ * addedd the "Ollie" test to the floating point ones.
+ *
+ * Martin Pool (mbp@samba.org) April 2003
+ * Remove NO_CONFIG_H so that the test case can be built within a source
+ * tree with less trouble.
+ * Remove unnecessary SAFE_FREE() definition.
+ *
+ * Martin Pool (mbp@samba.org) May 2003
+ * Put in a prototype for dummy_snprintf() to quiet compiler warnings.
+ *
+ * Move #endif to make sure VA_COPY, LDOUBLE, etc are defined even
+ * if the C library has some snprintf functions already.
+ *
+ * Damien Miller (djm@mindrot.org) Jan 2007
+ * Fix integer overflows in return value.
+ * Make formatting quite a bit faster by inlining dopr_outch()
+ *
+ **************************************************************/
+
+#include "includes.h"
+
+#if defined(BROKEN_SNPRINTF) /* For those with broken snprintf() */
+# undef HAVE_SNPRINTF
+# undef HAVE_VSNPRINTF
+#endif
+
+#if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF)
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <errno.h>
+
+#ifdef HAVE_LONG_DOUBLE
+# define LDOUBLE long double
+#else
+# define LDOUBLE double
+#endif
+
+#ifdef HAVE_LONG_LONG
+# define LLONG long long
+#else
+# define LLONG long
+#endif
+
+/*
+ * dopr(): poor man's version of doprintf
+ */
+
+/* format read states */
+#define DP_S_DEFAULT 0
+#define DP_S_FLAGS 1
+#define DP_S_MIN 2
+#define DP_S_DOT 3
+#define DP_S_MAX 4
+#define DP_S_MOD 5
+#define DP_S_CONV 6
+#define DP_S_DONE 7
+
+/* format flags - Bits */
+#define DP_F_MINUS (1 << 0)
+#define DP_F_PLUS (1 << 1)
+#define DP_F_SPACE (1 << 2)
+#define DP_F_NUM (1 << 3)
+#define DP_F_ZERO (1 << 4)
+#define DP_F_UP (1 << 5)
+#define DP_F_UNSIGNED (1 << 6)
+
+/* Conversion Flags */
+#define DP_C_SHORT 1
+#define DP_C_LONG 2
+#define DP_C_LDOUBLE 3
+#define DP_C_LLONG 4
+#define DP_C_SIZE 5
+#define DP_C_INTMAX 6
+
+#define char_to_int(p) ((p)- '0')
+#ifndef MAX
+# define MAX(p,q) (((p) >= (q)) ? (p) : (q))
+#endif
+
+#define DOPR_OUTCH(buf, pos, buflen, thechar) \
+ do { \
+ if (pos + 1 >= INT_MAX) { \
+ errno = ERANGE; \
+ return -1; \
+ } \
+ if (pos < buflen) \
+ buf[pos] = thechar; \
+ (pos)++; \
+ } while (0)
+
+static int dopr(char *buffer, size_t maxlen, const char *format,
+ va_list args_in);
+static int fmtstr(char *buffer, size_t *currlen, size_t maxlen,
+ char *value, int flags, int min, int max);
+static int fmtint(char *buffer, size_t *currlen, size_t maxlen,
+ intmax_t value, int base, int min, int max, int flags);
+static int fmtfp(char *buffer, size_t *currlen, size_t maxlen,
+ LDOUBLE fvalue, int min, int max, int flags);
+
+static int
+dopr(char *buffer, size_t maxlen, const char *format, va_list args_in)
+{
+ char ch;
+ intmax_t value;
+ LDOUBLE fvalue;
+ char *strvalue;
+ int min;
+ int max;
+ int state;
+ int flags;
+ int cflags;
+ size_t currlen;
+ va_list args;
+
+ VA_COPY(args, args_in);
+
+ state = DP_S_DEFAULT;
+ currlen = flags = cflags = min = 0;
+ max = -1;
+ ch = *format++;
+
+ while (state != DP_S_DONE) {
+ if (ch == '\0')
+ state = DP_S_DONE;
+
+ switch(state) {
+ case DP_S_DEFAULT:
+ if (ch == '%')
+ state = DP_S_FLAGS;
+ else
+ DOPR_OUTCH(buffer, currlen, maxlen, ch);
+ ch = *format++;
+ break;
+ case DP_S_FLAGS:
+ switch (ch) {
+ case '-':
+ flags |= DP_F_MINUS;
+ ch = *format++;
+ break;
+ case '+':
+ flags |= DP_F_PLUS;
+ ch = *format++;
+ break;
+ case ' ':
+ flags |= DP_F_SPACE;
+ ch = *format++;
+ break;
+ case '#':
+ flags |= DP_F_NUM;
+ ch = *format++;
+ break;
+ case '0':
+ flags |= DP_F_ZERO;
+ ch = *format++;
+ break;
+ default:
+ state = DP_S_MIN;
+ break;
+ }
+ break;
+ case DP_S_MIN:
+ if (isdigit((unsigned char)ch)) {
+ min = 10*min + char_to_int (ch);
+ ch = *format++;
+ } else if (ch == '*') {
+ min = va_arg (args, int);
+ ch = *format++;
+ state = DP_S_DOT;
+ } else {
+ state = DP_S_DOT;
+ }
+ break;
+ case DP_S_DOT:
+ if (ch == '.') {
+ state = DP_S_MAX;
+ ch = *format++;
+ } else {
+ state = DP_S_MOD;
+ }
+ break;
+ case DP_S_MAX:
+ if (isdigit((unsigned char)ch)) {
+ if (max < 0)
+ max = 0;
+ max = 10*max + char_to_int (ch);
+ ch = *format++;
+ } else if (ch == '*') {
+ max = va_arg (args, int);
+ ch = *format++;
+ state = DP_S_MOD;
+ } else {
+ state = DP_S_MOD;
+ }
+ break;
+ case DP_S_MOD:
+ switch (ch) {
+ case 'h':
+ cflags = DP_C_SHORT;
+ ch = *format++;
+ break;
+ case 'j':
+ cflags = DP_C_INTMAX;
+ ch = *format++;
+ break;
+ case 'l':
+ cflags = DP_C_LONG;
+ ch = *format++;
+ if (ch == 'l') { /* It's a long long */
+ cflags = DP_C_LLONG;
+ ch = *format++;
+ }
+ break;
+ case 'L':
+ cflags = DP_C_LDOUBLE;
+ ch = *format++;
+ break;
+ case 'z':
+ cflags = DP_C_SIZE;
+ ch = *format++;
+ break;
+ default:
+ break;
+ }
+ state = DP_S_CONV;
+ break;
+ case DP_S_CONV:
+ switch (ch) {
+ case 'd':
+ case 'i':
+ if (cflags == DP_C_SHORT)
+ value = va_arg (args, int);
+ else if (cflags == DP_C_LONG)
+ value = va_arg (args, long int);
+ else if (cflags == DP_C_LLONG)
+ value = va_arg (args, LLONG);
+ else if (cflags == DP_C_SIZE)
+ value = va_arg (args, ssize_t);
+ else if (cflags == DP_C_INTMAX)
+ value = va_arg (args, intmax_t);
+ else
+ value = va_arg (args, int);
+ if (fmtint(buffer, &currlen, maxlen,
+ value, 10, min, max, flags) == -1)
+ return -1;
+ break;
+ case 'o':
+ flags |= DP_F_UNSIGNED;
+ if (cflags == DP_C_SHORT)
+ value = va_arg (args, unsigned int);
+ else if (cflags == DP_C_LONG)
+ value = (long)va_arg (args, unsigned long int);
+ else if (cflags == DP_C_LLONG)
+ value = (long)va_arg (args, unsigned LLONG);
+ else if (cflags == DP_C_SIZE)
+ value = va_arg (args, size_t);
+#ifdef notyet
+ else if (cflags == DP_C_INTMAX)
+ value = va_arg (args, uintmax_t);
+#endif
+ else
+ value = (long)va_arg (args, unsigned int);
+ if (fmtint(buffer, &currlen, maxlen, value,
+ 8, min, max, flags) == -1)
+ return -1;
+ break;
+ case 'u':
+ flags |= DP_F_UNSIGNED;
+ if (cflags == DP_C_SHORT)
+ value = va_arg (args, unsigned int);
+ else if (cflags == DP_C_LONG)
+ value = (long)va_arg (args, unsigned long int);
+ else if (cflags == DP_C_LLONG)
+ value = (LLONG)va_arg (args, unsigned LLONG);
+ else if (cflags == DP_C_SIZE)
+ value = va_arg (args, size_t);
+#ifdef notyet
+ else if (cflags == DP_C_INTMAX)
+ value = va_arg (args, uintmax_t);
+#endif
+ else
+ value = (long)va_arg (args, unsigned int);
+ if (fmtint(buffer, &currlen, maxlen, value,
+ 10, min, max, flags) == -1)
+ return -1;
+ break;
+ case 'X':
+ flags |= DP_F_UP;
+ case 'x':
+ flags |= DP_F_UNSIGNED;
+ if (cflags == DP_C_SHORT)
+ value = va_arg (args, unsigned int);
+ else if (cflags == DP_C_LONG)
+ value = (long)va_arg (args, unsigned long int);
+ else if (cflags == DP_C_LLONG)
+ value = (LLONG)va_arg (args, unsigned LLONG);
+ else if (cflags == DP_C_SIZE)
+ value = va_arg (args, size_t);
+#ifdef notyet
+ else if (cflags == DP_C_INTMAX)
+ value = va_arg (args, uintmax_t);
+#endif
+ else
+ value = (long)va_arg (args, unsigned int);
+ if (fmtint(buffer, &currlen, maxlen, value,
+ 16, min, max, flags) == -1)
+ return -1;
+ break;
+ case 'f':
+ if (cflags == DP_C_LDOUBLE)
+ fvalue = va_arg (args, LDOUBLE);
+ else
+ fvalue = va_arg (args, double);
+ if (fmtfp(buffer, &currlen, maxlen, fvalue,
+ min, max, flags) == -1)
+ return -1;
+ break;
+ case 'E':
+ flags |= DP_F_UP;
+ case 'e':
+ if (cflags == DP_C_LDOUBLE)
+ fvalue = va_arg (args, LDOUBLE);
+ else
+ fvalue = va_arg (args, double);
+ if (fmtfp(buffer, &currlen, maxlen, fvalue,
+ min, max, flags) == -1)
+ return -1;
+ break;
+ case 'G':
+ flags |= DP_F_UP;
+ case 'g':
+ if (cflags == DP_C_LDOUBLE)
+ fvalue = va_arg (args, LDOUBLE);
+ else
+ fvalue = va_arg (args, double);
+ if (fmtfp(buffer, &currlen, maxlen, fvalue,
+ min, max, flags) == -1)
+ return -1;
+ break;
+ case 'c':
+ DOPR_OUTCH(buffer, currlen, maxlen,
+ va_arg (args, int));
+ break;
+ case 's':
+ strvalue = va_arg (args, char *);
+ if (!strvalue) strvalue = "(NULL)";
+ if (max == -1) {
+ max = strlen(strvalue);
+ }
+ if (min > 0 && max >= 0 && min > max) max = min;
+ if (fmtstr(buffer, &currlen, maxlen,
+ strvalue, flags, min, max) == -1)
+ return -1;
+ break;
+ case 'p':
+ strvalue = va_arg (args, void *);
+ if (fmtint(buffer, &currlen, maxlen,
+ (long) strvalue, 16, min, max, flags) == -1)
+ return -1;
+ break;
+#if we_dont_want_this_in_openssh
+ case 'n':
+ if (cflags == DP_C_SHORT) {
+ short int *num;
+ num = va_arg (args, short int *);
+ *num = currlen;
+ } else if (cflags == DP_C_LONG) {
+ long int *num;
+ num = va_arg (args, long int *);
+ *num = (long int)currlen;
+ } else if (cflags == DP_C_LLONG) {
+ LLONG *num;
+ num = va_arg (args, LLONG *);
+ *num = (LLONG)currlen;
+ } else if (cflags == DP_C_SIZE) {
+ ssize_t *num;
+ num = va_arg (args, ssize_t *);
+ *num = (ssize_t)currlen;
+ } else if (cflags == DP_C_INTMAX) {
+ intmax_t *num;
+ num = va_arg (args, intmax_t *);
+ *num = (intmax_t)currlen;
+ } else {
+ int *num;
+ num = va_arg (args, int *);
+ *num = currlen;
+ }
+ break;
+#endif
+ case '%':
+ DOPR_OUTCH(buffer, currlen, maxlen, ch);
+ break;
+ case 'w':
+ /* not supported yet, treat as next char */
+ ch = *format++;
+ break;
+ default:
+ /* Unknown, skip */
+ break;
+ }
+ ch = *format++;
+ state = DP_S_DEFAULT;
+ flags = cflags = min = 0;
+ max = -1;
+ break;
+ case DP_S_DONE:
+ break;
+ default:
+ /* hmm? */
+ break; /* some picky compilers need this */
+ }
+ }
+ if (maxlen != 0) {
+ if (currlen < maxlen - 1)
+ buffer[currlen] = '\0';
+ else if (maxlen > 0)
+ buffer[maxlen - 1] = '\0';
+ }
+
+ return currlen < INT_MAX ? (int)currlen : -1;
+}
+
+static int
+fmtstr(char *buffer, size_t *currlen, size_t maxlen,
+ char *value, int flags, int min, int max)
+{
+ int padlen, strln; /* amount to pad */
+ int cnt = 0;
+
+#ifdef DEBUG_SNPRINTF
+ printf("fmtstr min=%d max=%d s=[%s]\n", min, max, value);
+#endif
+ if (value == 0) {
+ value = "<NULL>";
+ }
+
+ for (strln = 0; strln < max && value[strln]; ++strln); /* strlen */
+ padlen = min - strln;
+ if (padlen < 0)
+ padlen = 0;
+ if (flags & DP_F_MINUS)
+ padlen = -padlen; /* Left Justify */
+
+ while ((padlen > 0) && (cnt < max)) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, ' ');
+ --padlen;
+ ++cnt;
+ }
+ while (*value && (cnt < max)) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, *value);
+ value++;
+ ++cnt;
+ }
+ while ((padlen < 0) && (cnt < max)) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, ' ');
+ ++padlen;
+ ++cnt;
+ }
+ return 0;
+}
+
+/* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
+
+static int
+fmtint(char *buffer, size_t *currlen, size_t maxlen,
+ intmax_t value, int base, int min, int max, int flags)
+{
+ int signvalue = 0;
+ unsigned LLONG uvalue;
+ char convert[20];
+ int place = 0;
+ int spadlen = 0; /* amount to space pad */
+ int zpadlen = 0; /* amount to zero pad */
+ int caps = 0;
+
+ if (max < 0)
+ max = 0;
+
+ uvalue = value;
+
+ if(!(flags & DP_F_UNSIGNED)) {
+ if( value < 0 ) {
+ signvalue = '-';
+ uvalue = -value;
+ } else {
+ if (flags & DP_F_PLUS) /* Do a sign (+/i) */
+ signvalue = '+';
+ else if (flags & DP_F_SPACE)
+ signvalue = ' ';
+ }
+ }
+
+ if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
+
+ do {
+ convert[place++] =
+ (caps? "0123456789ABCDEF":"0123456789abcdef")
+ [uvalue % (unsigned)base ];
+ uvalue = (uvalue / (unsigned)base );
+ } while(uvalue && (place < 20));
+ if (place == 20) place--;
+ convert[place] = 0;
+
+ zpadlen = max - place;
+ spadlen = min - MAX (max, place) - (signvalue ? 1 : 0);
+ if (zpadlen < 0) zpadlen = 0;
+ if (spadlen < 0) spadlen = 0;
+ if (flags & DP_F_ZERO) {
+ zpadlen = MAX(zpadlen, spadlen);
+ spadlen = 0;
+ }
+ if (flags & DP_F_MINUS)
+ spadlen = -spadlen; /* Left Justifty */
+
+#ifdef DEBUG_SNPRINTF
+ printf("zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
+ zpadlen, spadlen, min, max, place);
+#endif
+
+ /* Spaces */
+ while (spadlen > 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, ' ');
+ --spadlen;
+ }
+
+ /* Sign */
+ if (signvalue)
+ DOPR_OUTCH(buffer, *currlen, maxlen, signvalue);
+
+ /* Zeros */
+ if (zpadlen > 0) {
+ while (zpadlen > 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, '0');
+ --zpadlen;
+ }
+ }
+
+ /* Digits */
+ while (place > 0) {
+ --place;
+ DOPR_OUTCH(buffer, *currlen, maxlen, convert[place]);
+ }
+
+ /* Left Justified spaces */
+ while (spadlen < 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, ' ');
+ ++spadlen;
+ }
+ return 0;
+}
+
+static LDOUBLE abs_val(LDOUBLE value)
+{
+ LDOUBLE result = value;
+
+ if (value < 0)
+ result = -value;
+
+ return result;
+}
+
+static LDOUBLE POW10(int val)
+{
+ LDOUBLE result = 1;
+
+ while (val) {
+ result *= 10;
+ val--;
+ }
+
+ return result;
+}
+
+static LLONG ROUND(LDOUBLE value)
+{
+ LLONG intpart;
+
+ intpart = (LLONG)value;
+ value = value - intpart;
+ if (value >= 0.5) intpart++;
+
+ return intpart;
+}
+
+/* a replacement for modf that doesn't need the math library. Should
+ be portable, but slow */
+static double my_modf(double x0, double *iptr)
+{
+ int i;
+ long l;
+ double x = x0;
+ double f = 1.0;
+
+ for (i=0;i<100;i++) {
+ l = (long)x;
+ if (l <= (x+1) && l >= (x-1)) break;
+ x *= 0.1;
+ f *= 10.0;
+ }
+
+ if (i == 100) {
+ /*
+ * yikes! the number is beyond what we can handle.
+ * What do we do?
+ */
+ (*iptr) = 0;
+ return 0;
+ }
+
+ if (i != 0) {
+ double i2;
+ double ret;
+
+ ret = my_modf(x0-l*f, &i2);
+ (*iptr) = l*f + i2;
+ return ret;
+ }
+
+ (*iptr) = l;
+ return x - (*iptr);
+}
+
+
+static int
+fmtfp (char *buffer, size_t *currlen, size_t maxlen,
+ LDOUBLE fvalue, int min, int max, int flags)
+{
+ int signvalue = 0;
+ double ufvalue;
+ char iconvert[311];
+ char fconvert[311];
+ int iplace = 0;
+ int fplace = 0;
+ int padlen = 0; /* amount to pad */
+ int zpadlen = 0;
+ int caps = 0;
+ int idx;
+ double intpart;
+ double fracpart;
+ double temp;
+
+ /*
+ * AIX manpage says the default is 0, but Solaris says the default
+ * is 6, and sprintf on AIX defaults to 6
+ */
+ if (max < 0)
+ max = 6;
+
+ ufvalue = abs_val (fvalue);
+
+ if (fvalue < 0) {
+ signvalue = '-';
+ } else {
+ if (flags & DP_F_PLUS) { /* Do a sign (+/i) */
+ signvalue = '+';
+ } else {
+ if (flags & DP_F_SPACE)
+ signvalue = ' ';
+ }
+ }
+
+#if 0
+ if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
+#endif
+
+#if 0
+ if (max == 0) ufvalue += 0.5; /* if max = 0 we must round */
+#endif
+
+ /*
+ * Sorry, we only support 16 digits past the decimal because of our
+ * conversion method
+ */
+ if (max > 16)
+ max = 16;
+
+ /* We "cheat" by converting the fractional part to integer by
+ * multiplying by a factor of 10
+ */
+
+ temp = ufvalue;
+ my_modf(temp, &intpart);
+
+ fracpart = ROUND((POW10(max)) * (ufvalue - intpart));
+
+ if (fracpart >= POW10(max)) {
+ intpart++;
+ fracpart -= POW10(max);
+ }
+
+ /* Convert integer part */
+ do {
+ temp = intpart*0.1;
+ my_modf(temp, &intpart);
+ idx = (int) ((temp -intpart +0.05)* 10.0);
+ /* idx = (int) (((double)(temp*0.1) -intpart +0.05) *10.0); */
+ /* printf ("%llf, %f, %x\n", temp, intpart, idx); */
+ iconvert[iplace++] =
+ (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
+ } while (intpart && (iplace < 311));
+ if (iplace == 311) iplace--;
+ iconvert[iplace] = 0;
+
+ /* Convert fractional part */
+ if (fracpart)
+ {
+ do {
+ temp = fracpart*0.1;
+ my_modf(temp, &fracpart);
+ idx = (int) ((temp -fracpart +0.05)* 10.0);
+ /* idx = (int) ((((temp/10) -fracpart) +0.05) *10); */
+ /* printf ("%lf, %lf, %ld\n", temp, fracpart, idx ); */
+ fconvert[fplace++] =
+ (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
+ } while(fracpart && (fplace < 311));
+ if (fplace == 311) fplace--;
+ }
+ fconvert[fplace] = 0;
+
+ /* -1 for decimal point, another -1 if we are printing a sign */
+ padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
+ zpadlen = max - fplace;
+ if (zpadlen < 0) zpadlen = 0;
+ if (padlen < 0)
+ padlen = 0;
+ if (flags & DP_F_MINUS)
+ padlen = -padlen; /* Left Justifty */
+
+ if ((flags & DP_F_ZERO) && (padlen > 0)) {
+ if (signvalue) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, signvalue);
+ --padlen;
+ signvalue = 0;
+ }
+ while (padlen > 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, '0');
+ --padlen;
+ }
+ }
+ while (padlen > 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, ' ');
+ --padlen;
+ }
+ if (signvalue)
+ DOPR_OUTCH(buffer, *currlen, maxlen, signvalue);
+
+ while (iplace > 0) {
+ --iplace;
+ DOPR_OUTCH(buffer, *currlen, maxlen, iconvert[iplace]);
+ }
+
+#ifdef DEBUG_SNPRINTF
+ printf("fmtfp: fplace=%d zpadlen=%d\n", fplace, zpadlen);
+#endif
+
+ /*
+ * Decimal point. This should probably use locale to find the correct
+ * char to print out.
+ */
+ if (max > 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, '.');
+
+ while (zpadlen > 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, '0');
+ --zpadlen;
+ }
+
+ while (fplace > 0) {
+ --fplace;
+ DOPR_OUTCH(buffer, *currlen, maxlen, fconvert[fplace]);
+ }
+ }
+
+ while (padlen < 0) {
+ DOPR_OUTCH(buffer, *currlen, maxlen, ' ');
+ ++padlen;
+ }
+ return 0;
+}
+#endif /* !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) */
+
+#if !defined(HAVE_VSNPRINTF)
+int
+vsnprintf (char *str, size_t count, const char *fmt, va_list args)
+{
+ return dopr(str, count, fmt, args);
+}
+#endif
+
+#if !defined(HAVE_SNPRINTF)
+int
+snprintf(char *str, size_t count, SNPRINTF_CONST char *fmt, ...)
+{
+ size_t ret;
+ va_list ap;
+
+ va_start(ap, fmt);
+ ret = vsnprintf(str, count, fmt, ap);
+ va_end(ap);
+ return ret;
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 10:48:57 +0000