/* Routines for dealing with '\0' separated arg vectors.

   Copyright (C) 1995-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Written by Miles Bader <miles@gnu.org>

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <argz.h>

#include <string.h>

#include <stdlib.h>

/* Delete ENTRY from ARGZ & ARGZ_LEN, if any.  */

void

argz_delete (char **argz, size_t *argz_len, char *entry)

{

  if (entry)

    /* Get rid of the old value for NAME.  */

    {

      size_t entry_len = strlen (entry) + 1;

      *argz_len -= entry_len;

      memmove (entry, entry + entry_len, *argz_len - (entry - *argz));

      if (*argz_len == 0)

	{

	  free (*argz);

	  *argz = 0;

	}

    }

}

libc_hidden_def (argz_delete)