Return to asprintf.c CVS log

Up to [local] / rpl / src

En route pour la version 4.0.12 !

    1: /*
    2: ================================================================================
    3:   RPL/2 (R) version 4.0.12
    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 "rpl.h"
   24: #include <stdarg.h>
   25: 
   26: 
   27: int
   28: valsprintf(unsigned char **strp, const char *fmt, va_list ap)
   29: {
   30:     size_t          bs;
   31:     size_t          s;
   32: 
   33:     unsigned char   *b = NULL;
   34: 
   35:     va_list         cap;
   36: 
   37:     for(bs = 1024;; bs *= 2)
   38:     {
   39:         va_copy(cap, ap);
   40: 
   41:         if (b != NULL)
   42:         {
   43:             free(b);
   44:         }
   45: 
   46:         if ((b = malloc(sizeof(*b) * bs)) == NULL)
   47:         {
   48:             return -1;
   49:         }
   50: 
   51:         if (((int) (s = vsnprintf(b, bs, fmt, cap))) < 0)
   52:         {
   53:             free(b);
   54:             return -1;
   55:         }
   56: 
   57:         if (s < bs)
   58:         {
   59:             break;
   60:         }
   61:     }
   62: 
   63:     if (((*strp) = realloc(b, ((s = strlen(b)) + 1) * sizeof(*b))) == NULL)
   64:     {
   65:         free(b);
   66:         return -1;
   67:     }
   68: 
   69:     return s;
   70: }
   71: 
   72: 
   73: int
   74: alsprintf(unsigned char **strp, const char *fmt, ...)
   75: {
   76:     int         done;
   77:     va_list     arg;
   78: 
   79:     va_start(arg, fmt);
   80:     done = valsprintf(strp, fmt, arg);
   81:     va_end(arg);
   82: 
   83:     return(done);
   84: }
   85: 
   86: // vim: ts=4