string/argz-stringify.c

   1 /* Routines for dealing with '\0' separated arg vectors.
   2    Copyright (C) 1995-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <argz.h>
  20 #include <string.h>
  21
  22 /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
  23    except the last into the character SEP.  */
  24 void
  25 __argz_stringify (char *argz, size_t len, int sep)
  26 {
  27   if (len > 0)
  28     while (1)
  29       {
  30         size_t part_len = __strnlen (argz, len);
  31         argz += part_len;
  32         len -= part_len;
  33         if (len-- <= 1)         /* includes final '\0' we want to stop at */
  34           break;
  35         *argz++ = sep;
  36       }
  37 }
  38 libc_hidden_def (__argz_stringify)
  39 weak_alias (__argz_stringify, argz_stringify)