crossroads

Git mirror of https://crossroads.e-tunity.com/
git clone git://git.finwo.net/app/crossroads
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strvprintf.c (1015B)

      1 /*************************************************************************
      2  * This file is part of Crosroads 1.23, a load balancer and fail over
      3  * utility for TCP. Copyright (c) Karel Kubat, distributed under GPL.
      4  * Visit http://crossroads.e-tunity.com for information.
      5  *************************************************************************/
      6 #include "crossroads.h"
      7 
      8 #define STR_BLOCK 512
      9 
     10 char *str_vprintf (char const *fmt, va_list arguments) {
     11     int size = STR_BLOCK;	    /* initial size guess */
     12     char *buffer = xmalloc (size);   /* initial buffer */
     13     int nchars;			    /* return value of vsnprintf */
     14 
     15     while (1) {			    /* try to make string */
     16 	nchars = vsnprintf (buffer, size, fmt, arguments);
     17 
     18 	/* if this worked, return string */
     19 	if (nchars > -1 && nchars < size)
     20 	    return (buffer);
     21 
     22 	/* try again with more space */
     23 	if (nchars > -1)
     24 	    size = nchars + 1;
     25 	else
     26 	    size += STR_BLOCK;
     27 
     28 	buffer = xrealloc (buffer, size);
     29     }
     30 
     31     return (0);			    /* to satisfy prototype */
     32 }