string/argz-count.c

   1 /* Routines for dealing with '\0' separated arg vectors.
   2    Copyright (C) 1995-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Written by Miles Bader <miles@gnu.ai.mit.edu>
   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 /* Returns the number of strings in ARGZ.  */
  24 size_t
  25 __argz_count (const char *argz, size_t len)
  26 {
  27   size_t count = 0;
  28   while (len > 0)
  29     {
  30       size_t part_len = strlen(argz);
  31       argz += part_len + 1;
  32       len -= part_len + 1;
  33       count++;
  34     }
  35   return count;
  36 }
  37 libc_hidden_def (__argz_count)
  38 weak_alias (__argz_count, argz_count)