Added the vsnprintf function code of Patrick Powell for MS Visual C users.

1 files changed, 790 insertions, 0 deletions

diff --git a/win32/msvc/vsnprintf.c b/win32/msvc/vsnprintf.c
new file mode 100644
index 00000000..2cba8f31
--- /dev/null
+++ b/win32/msvc/vsnprintf.c
@@ -0,0 +1,790 @@
+/* This file is NOT part of Wget, but is used by Wget on the systems
+   where vsnprintf() is not defined.  It has been written by Patrick
+   Powell and modified by other people.  All the copyright and other
+   notices have been left intact.
+
+   My changes are documented at the bottom, along with other changes.
+   I hereby place my modifications to this file under the public
+   domain.  */
+
+/*
+ * 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, formated 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
+ *
+ *  Russ Allbery <rra@stanford.edu> 2000-08-26
+ *    fixed return value to comply with C99
+ *    fixed handling of snprintf(NULL, ...)
+ *
+ *  Hrvoje Niksic <hniksic@arsdigita.com> 2000-11-04
+ *    include <config.h> instead of "config.h".
+ *    moved TEST_SNPRINTF stuff out of HAVE_SNPRINTF ifdef.
+ *    include <stdio.h> for NULL.
+ *    added support and test cases for long long.
+ *    don't declare argument types to (v)snprintf if stdarg is not used.
+ *    use int instead of short int as 2nd arg to va_arg.
+ *
+ **************************************************************/
+
+/* BDR 2002-01-13  %e and %g were being ignored.  Now do something,
+   if not necessarily correctly */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF)
+
+#include <string.h>
+#include <sys/types.h>
+#include <stdio.h>		/* for NULL */
+#include <ctype.h>
+
+/* varargs declarations: */
+
+#if defined(HAVE_STDARG_H)
+# include <stdarg.h>
+# define HAVE_STDARGS    /* let's hope that works everywhere (mj) */
+# define VA_LOCAL_DECL   va_list ap
+# define VA_START(f)     va_start(ap, f)
+# define VA_SHIFT(v,t)  ;   /* no-op for ANSI */
+# define VA_END	  va_end(ap)
+#else
+# include <varargs.h>
+# undef HAVE_STDARGS
+# define VA_LOCAL_DECL   va_list ap
+# define VA_START(f)     va_start(ap)      /* f is ignored! */
+# define VA_SHIFT(v,t) v = va_arg(ap,t)
+# define VA_END	va_end(ap)
+#endif
+
+#if (SIZEOF_LONG_DOUBLE > 0)
+/* #ifdef HAVE_LONG_DOUBLE */
+#define LDOUBLE long double
+#else
+#define LDOUBLE double
+#endif
+
+#if (SIZEOF_LONG_LONG > 0)
+/* #ifdef HAVE_LONG_LONG */
+# define LLONG long long
+#else
+# define LLONG long
+#endif
+
+#ifdef HAVE_STDARGS
+int snprintf (char *str, size_t count, const char *fmt, ...);
+int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);
+#else
+int snprintf ();
+int vsnprintf ();
+#endif
+
+static int dopr (char *buffer, size_t maxlen, const char *format, 
+		 va_list args);
+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,
+		   LLONG 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_outch (char *buffer, size_t *currlen, size_t maxlen, char c );
+
+/*
+ * 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_MOD_L   6
+#define DP_S_CONV    7
+#define DP_S_DONE    8
+
+/* 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_LLONG   3
+#define DP_C_LDOUBLE 4
+
+#define char_to_int(p) (p - '0')
+#define MAX(p,q) ((p >= q) ? p : q)
+#define MIN(p,q) ((p <= q) ? p : q)
+
+static int dopr (char *buffer, size_t maxlen, const char *format, va_list args)
+{
+  char ch;
+  LLONG value;
+  LDOUBLE fvalue;
+  char *strvalue;
+  int min;
+  int max;
+  int state;
+  int flags;
+  int cflags;
+  int total;
+  size_t currlen;
+  
+  state = DP_S_DEFAULT;
+  currlen = flags = cflags = min = 0;
+  max = -1;
+  ch = *format++;
+  total = 0;
+
+  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 
+	total += 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 ('0' <= ch && ch <= '9')
+      {
+	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 ('0' <= ch && ch <= '9')
+      {
+	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 'l':
+	cflags = DP_C_LONG;
+	ch = *format++;
+	break;
+      case 'L':
+	cflags = DP_C_LDOUBLE;
+	ch = *format++;
+	break;
+      default:
+	break;
+      }
+      if (cflags != DP_C_LONG)
+	state = DP_S_CONV;
+      else
+	state = DP_S_MOD_L;
+      break;
+    case DP_S_MOD_L:
+      switch (ch)
+	{
+	case 'l':
+	  cflags = DP_C_LLONG;
+	  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 = (short int)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
+	  value = va_arg (args, int);
+	total += fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags);
+	break;
+      case 'o':
+	flags |= DP_F_UNSIGNED;
+	if (cflags == DP_C_SHORT)
+	  value = (unsigned short int)va_arg (args, unsigned int);
+	else if (cflags == DP_C_LONG)
+	  value = va_arg (args, unsigned long int);
+	else if (cflags == DP_C_LLONG)
+	  value = va_arg (args, unsigned LLONG);
+	else
+	  value = va_arg (args, unsigned int);
+	total += fmtint (buffer, &currlen, maxlen, value, 8, min, max, flags);
+	break;
+      case 'u':
+	flags |= DP_F_UNSIGNED;
+	if (cflags == DP_C_SHORT)
+	  value = (unsigned short int)va_arg (args, unsigned int);
+	else if (cflags == DP_C_LONG)
+	  value = va_arg (args, unsigned long int);
+	else if (cflags == DP_C_LLONG)
+	  value = va_arg (args, unsigned LLONG);
+	else
+	  value = va_arg (args, unsigned int);
+	total += fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags);
+	break;
+      case 'X':
+	flags |= DP_F_UP;
+      case 'x':
+	flags |= DP_F_UNSIGNED;
+	if (cflags == DP_C_SHORT)
+	  value = (unsigned short int)va_arg (args, unsigned int);
+	else if (cflags == DP_C_LONG)
+	  value = va_arg (args, unsigned long int);
+	else if (cflags == DP_C_LLONG)
+	  value = va_arg (args, unsigned LLONG);
+	else
+	  value = va_arg (args, unsigned int);
+	total += fmtint (buffer, &currlen, maxlen, value, 16, min, max, flags);
+	break;
+      case 'f':
+	if (cflags == DP_C_LDOUBLE)
+	  fvalue = va_arg (args, LDOUBLE);
+	else
+	  fvalue = va_arg (args, double);
+	/* um, floating point? */
+	total += fmtfp (buffer, &currlen, maxlen, fvalue, min, max, flags);
+	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);
+	/* um, floating point? */
+	total += fmtfp (buffer, &currlen, maxlen, fvalue, min, max, flags);
+	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);
+	/* um, floating point? */
+	total += fmtfp (buffer, &currlen, maxlen, fvalue, min, max, flags);
+	break;
+      case 'c':
+	total += dopr_outch (buffer, &currlen, maxlen, va_arg (args, int));
+	break;
+      case 's':
+	strvalue = va_arg (args, char *);
+	total += fmtstr (buffer, &currlen, maxlen, strvalue, flags, min, max);
+	break;
+      case 'p':
+	strvalue = va_arg (args, void *);
+	total += fmtint (buffer, &currlen, maxlen, (long) strvalue, 16, min,
+			 max, flags);
+	break;
+      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 = currlen;
+	} 
+	else if (cflags == DP_C_LLONG) 
+	{
+	  LLONG *num;
+	  num = va_arg (args, LLONG *);
+	  *num = currlen;
+	} 
+	else 
+	{
+	  int *num;
+	  num = va_arg (args, int *);
+	  *num = currlen;
+	}
+	break;
+      case '%':
+	total += 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 (buffer != NULL)
+  {
+    if (currlen < maxlen - 1) 
+      buffer[currlen] = '\0';
+    else 
+      buffer[maxlen - 1] = '\0';
+  }
+  return total;
+}
+
+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;
+  int total = 0;
+  
+  if (value == 0)
+  {
+    value = "<NULL>";
+  }
+
+  for (strln = 0; value[strln]; ++strln); /* strlen */
+  if (max >= 0 && max < strln)
+    strln = max;
+  padlen = min - strln;
+  if (padlen < 0) 
+    padlen = 0;
+  if (flags & DP_F_MINUS) 
+    padlen = -padlen; /* Left Justify */
+
+  while (padlen > 0)
+  {
+    total += dopr_outch (buffer, currlen, maxlen, ' ');
+    --padlen;
+  }
+  while (*value && ((max < 0) || (cnt < max)))
+  {
+    total += dopr_outch (buffer, currlen, maxlen, *value++);
+    ++cnt;
+  }
+  while (padlen < 0)
+  {
+    total += dopr_outch (buffer, currlen, maxlen, ' ');
+    ++padlen;
+  }
+  return total;
+}
+
+/* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
+
+static int fmtint (char *buffer, size_t *currlen, size_t maxlen,
+		   LLONG value, int base, int min, int max, int flags)
+{
+  int signvalue = 0;
+  unsigned LLONG uvalue;
+  char convert[24];
+  int place = 0;
+  int spadlen = 0; /* amount to space pad */
+  int zpadlen = 0; /* amount to zero pad */
+  const char *digits;
+  int total = 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)
+    /* Should characters be upper case? */
+    digits = "0123456789ABCDEF";
+  else
+    digits = "0123456789abcdef";
+
+  do {
+    convert[place++] = digits[uvalue % (unsigned)base];
+    uvalue = (uvalue / (unsigned)base );
+  } while(uvalue && (place < sizeof (convert)));
+  if (place == sizeof (convert)) 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
+  dprint (1, (debugfile, "zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
+      zpadlen, spadlen, min, max, place));
+#endif
+
+  /* Spaces */
+  while (spadlen > 0) 
+  {
+    total += dopr_outch (buffer, currlen, maxlen, ' ');
+    --spadlen;
+  }
+
+  /* Sign */
+  if (signvalue) 
+    total += dopr_outch (buffer, currlen, maxlen, signvalue);
+
+  /* Zeros */
+  if (zpadlen > 0) 
+  {
+    while (zpadlen > 0)
+    {
+      total += dopr_outch (buffer, currlen, maxlen, '0');
+      --zpadlen;
+    }
+  }
+
+  /* Digits */
+  while (place > 0) 
+    total += dopr_outch (buffer, currlen, maxlen, convert[--place]);
+  
+  /* Left Justified spaces */
+  while (spadlen < 0) {
+    total += dopr_outch (buffer, currlen, maxlen, ' ');
+    ++spadlen;
+  }
+
+  return total;
+}
+
+static LDOUBLE abs_val (LDOUBLE value)
+{
+  LDOUBLE result = value;
+
+  if (value < 0)
+    result = -value;
+
+  return result;
+}
+
+static LDOUBLE pow10 (int exp)
+{
+  LDOUBLE result = 1;
+
+  while (exp)
+  {
+    result *= 10;
+    exp--;
+  }
+  
+  return result;
+}
+
+static long round (LDOUBLE value)
+{
+  long intpart;
+
+  intpart = value;
+  value = value - intpart;
+  if (value >= 0.5)
+    intpart++;
+
+  return intpart;
+}
+
+static int fmtfp (char *buffer, size_t *currlen, size_t maxlen,
+		  LDOUBLE fvalue, int min, int max, int flags)
+{
+  int signvalue = 0;
+  LDOUBLE ufvalue;
+  char iconvert[20];
+  char fconvert[20];
+  int iplace = 0;
+  int fplace = 0;
+  int padlen = 0; /* amount to pad */
+  int zpadlen = 0; 
+  int caps = 0;
+  int total = 0;
+  long intpart;
+  long fracpart;
+  
+  /* 
+   * 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
+
+  intpart = ufvalue;
+
+  /* 
+   * Sorry, we only support 9 digits past the decimal because of our 
+   * conversion method
+   */
+  if (max > 9)
+    max = 9;
+
+  /* We "cheat" by converting the fractional part to integer by
+   * multiplying by a factor of 10
+   */
+  fracpart = round ((pow10 (max)) * (ufvalue - intpart));
+
+  if (fracpart >= pow10 (max))
+  {
+    intpart++;
+    fracpart -= pow10 (max);
+  }
+
+#ifdef DEBUG_SNPRINTF
+  dprint (1, (debugfile, "fmtfp: %f =? %d.%d\n", fvalue, intpart, fracpart));
+#endif
+
+  /* Convert integer part */
+  do {
+    iconvert[iplace++] =
+      (caps? "0123456789ABCDEF":"0123456789abcdef")[intpart % 10];
+    intpart = (intpart / 10);
+  } while(intpart && (iplace < 20));
+  if (iplace == 20) iplace--;
+  iconvert[iplace] = 0;
+
+  /* Convert fractional part */
+  do {
+    fconvert[fplace++] =
+      (caps? "0123456789ABCDEF":"0123456789abcdef")[fracpart % 10];
+    fracpart = (fracpart / 10);
+  } while(fracpart && (fplace < 20));
+  if (fplace == 20) 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) 
+    {
+      total += dopr_outch (buffer, currlen, maxlen, signvalue);
+      --padlen;
+      signvalue = 0;
+    }
+    while (padlen > 0)
+    {
+      total += dopr_outch (buffer, currlen, maxlen, '0');
+      --padlen;
+    }
+  }
+  while (padlen > 0)
+  {
+    total += dopr_outch (buffer, currlen, maxlen, ' ');
+    --padlen;
+  }
+  if (signvalue) 
+    total += dopr_outch (buffer, currlen, maxlen, signvalue);
+
+  while (iplace > 0) 
+    total += dopr_outch (buffer, currlen, maxlen, iconvert[--iplace]);
+
+  /*
+   * Decimal point.  This should probably use locale to find the correct
+   * char to print out.
+   */
+  if (max > 0)
+  {
+    total += dopr_outch (buffer, currlen, maxlen, '.');
+
+    while (zpadlen-- > 0)
+      total += dopr_outch (buffer, currlen, maxlen, '0');
+
+    while (fplace > 0) 
+      total += dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]);
+  }
+
+  while (padlen < 0) 
+  {
+    total += dopr_outch (buffer, currlen, maxlen, ' ');
+    ++padlen;
+  }
+
+  return total;
+}
+
+static int dopr_outch (char *buffer, size_t *currlen, size_t maxlen, char c)
+{
+  if (*currlen + 1 < maxlen)
+    buffer[(*currlen)++] = c;
+  return 1;
+}
+
+#ifndef HAVE_VSNPRINTF
+int vsnprintf (char *str, size_t count, const char *fmt, va_list args)
+{
+  if (str != NULL)
+    str[0] = 0;
+  return dopr(str, count, fmt, args);
+}
+#endif /* !HAVE_VSNPRINTF */
+
+#endif /* !HAVE_SNPRINTF || !HAVE_VSNPRINTF */
+