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 #include <stdlib.h>
22
23 /* Delete ENTRY from ARGZ & ARGZ_LEN, if any. */
24 void
argz_delete(char ** argz,size_t * argz_len,char * entry)25 argz_delete (char **argz, size_t *argz_len, char *entry)
26 {
27 if (entry)
28 /* Get rid of the old value for NAME. */
29 {
30 size_t entry_len = strlen (entry) + 1;
31 *argz_len -= entry_len;
32 memmove (entry, entry + entry_len, *argz_len - (entry - *argz));
33 if (*argz_len == 0)
34 {
35 free (*argz);
36 *argz = 0;
37 }
38 }
39 }
40 libc_hidden_def (argz_delete)
41