stdio-common/_i18n_number.h

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.org>, 2000.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include "../locale/outdigits.h"
  21 #include "../locale/outdigitswc.h"
  22
  23 static CHAR_T *
  24 _i18n_number_rewrite (CHAR_T *w, CHAR_T *rear_ptr)
  25 {
  26   CHAR_T *src, *s;
  27
  28   /* Copy existing string so that nothing gets overwritten.  */
  29   src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
  30   s = (CHAR_T *) __mempcpy (src, w,
  31                             (rear_ptr - w) * sizeof (CHAR_T));
  32   w = rear_ptr;
  33
  34   /* Process all characters in the string.  */
  35   while (--s >= src)
  36     {
  37       if (*s >= '0' && *s <= '9')
  38         {
  39           if (sizeof (CHAR_T) == 1)
  40             w = (CHAR_T *) outdigit_value ((char *) w, *s - '0');
  41           else
  42             *--w = (CHAR_T) outdigitwc_value (*s - '0');
  43         }
  44       else
  45         *--w = *s;
  46     }
  47
  48   return w;
  49 }