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    1: /*
    2: ================================================================================
    3:   RPL/2 (R) version 4.1.1
    4:   Copyright (C) 1989-2011 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 "rpl.h"
   24: 
   25: 
   26: int
   27: valsprintf(unsigned char **strp, const char *fmt, va_list ap)
   28: {
   29:     size_t          bs;
   30:     size_t          s;
   31: 
   32:     unsigned char   *b = NULL;
   33: 
   34:     va_list         cap;
   35: 
   36:     for(bs = 1024;; bs *= 2)
   37:     {
   38:         va_copy(cap, ap);
   39: 
   40:         if (b != NULL)
   41:         {
   42:             free(b);
   43:         }
   44: 
   45:         if ((b = malloc(sizeof(*b) * bs)) == NULL)
   46:         {
   47:             return -1;
   48:         }
   49: 
   50:         if (((int) (s = vsnprintf(b, bs, fmt, cap))) < 0)
   51:         {
   52:             free(b);
   53:             return -1;
   54:         }
   55: 
   56:         if (s < bs)
   57:         {
   58:             break;
   59:         }
   60:     }
   61: 
   62:     if (((*strp) = realloc(b, ((s = strlen(b)) + 1) * sizeof(*b))) == NULL)
   63:     {
   64:         free(b);
   65:         return -1;
   66:     }
   67: 
   68:     return s;
   69: }
   70: 
   71: 
   72: int
   73: alsprintf(unsigned char **strp, const char *fmt, ...)
   74: {
   75:     int         done;
   76:     va_list     arg;
   77: 
   78:     va_start(arg, fmt);
   79:     done = valsprintf(strp, fmt, arg);
   80:     va_end(arg);
   81: 
   82:     return(done);
   83: }
   84: 
   85: // vim: ts=4