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#include <stdlib.h>
23
24/* Delete ENTRY from ARGZ & ARGZ_LEN, if any. */
25void
26argz_delete (char **argz, size_t *argz_len, char *entry)
27{
28 if (entry)
29 /* Get rid of the old value for NAME. */
30 {
31 size_t entry_len = strlen (entry) + 1;
32 *argz_len -= entry_len;
33 memmove (entry, entry + entry_len, *argz_len - (entry - *argz));
34 if (*argz_len == 0)
35 {
36 free (*argz);
37 *argz = 0;
38 }
39 }
40}
41libc_hidden_def (argz_delete)
42