string/argz-stringify.c

   1 /* Routines for dealing with '\0' separated arg vectors.
   2    Copyright (C) 1995-2016 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Written by Miles Bader <miles@gnu.org>
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <argz.h>
  21 #include <string.h>
  22
  23 /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
  24    except the last into the character SEP.  */
  25 void
  26 __argz_stringify (char *argz, size_t len, int sep)
  27 {
  28   if (len > 0)
  29     while (1)
  30       {
  31         size_t part_len = __strnlen (argz, len);
  32         argz += part_len;
  33         len -= part_len;
  34         if (len-- <= 1)         /* includes final '\0' we want to stop at */
  35           break;
  36         *argz++ = sep;
  37       }
  38 }
  39 libc_hidden_def (__argz_stringify)
  40 weak_alias (__argz_stringify, argz_stringify)