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    1: /*
    2: ================================================================================
    3:   RPL/2 (R) version 4.0.10
    4:   Copyright (C) 1989-2010 Dr. BERTRAND Joël
    5: 
    6:   This file is part of RPL/2.
    7: 
    8:   RPL/2 is free software; you can redistribute it and/or modify it
    9:   under the terms of the CeCILL V2 License as published by the french
   10:   CEA, CNRS and INRIA.
   11:  
   12:   RPL/2 is distributed in the hope that it will be useful, but WITHOUT
   13:   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   14:   FITNESS FOR A PARTICULAR PURPOSE.  See the CeCILL V2 License
   15:   for more details.
   16:  
   17:   You should have received a copy of the CeCILL License
   18:   along with RPL/2. If not, write to info@cecill.info.
   19: ================================================================================
   20: */
   21: 
   22: 
   23: #include <stdio.h>
   24: #include <stdlib.h>
   25: #include <stdarg.h>
   26: #include <string.h>
   27: #include <strings.h>
   28: 
   29: int
   30: vasprintf(char **strp, const char *fmt, va_list ap)
   31: {
   32:   size_t bs;
   33:   size_t s;
   34:   char *b = NULL;
   35: 
   36:   for(bs = 1024;; bs *= 2)
   37:   {
   38:     if (b != NULL)
   39:     {
   40:         free(b);
   41:     }
   42: 
   43:     if ((b = malloc(sizeof(*b) * bs)) == NULL)
   44:     {
   45:         return -1;
   46:     }
   47: 
   48:     if (((int) (s = vsnprintf(b, bs, fmt, ap))) < 0)
   49:     {
   50:         free(b);
   51:         return -1;
   52:     }
   53: 
   54:     if (s < bs)
   55:     {
   56:         break;
   57:     }
   58:   }
   59: 
   60:   if (((*strp) = realloc(b, ((s = strlen(b)) + 1) * sizeof(*b)))
   61:       == NULL)
   62:   {
   63:       free(b);
   64:       return -1;
   65:   }
   66: 
   67:   return s;
   68: }
   69: 
   70: 
   71: int
   72: asprintf(char **strp, const char *fmt, ...)
   73: {
   74:   int done;
   75:   va_list arg;
   76: 
   77:   va_start(arg, fmt);
   78:   done = vasprintf(strp, fmt, arg);
   79:   va_end(arg);
   80: 
   81:   return(done);
   82: }
   83: 
   84: // vim: ts=4