1 /* Iterate through the elements of an argz block.
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 char *
__argz_next(const char * argz,size_t argz_len,const char * entry)23 __argz_next (const char *argz, size_t argz_len, const char *entry)
24 {
25 if (entry)
26 {
27 if (entry < argz + argz_len)
28 entry = strchr (entry, '\0') + 1;
29
30 return entry >= argz + argz_len ? NULL : (char *) entry;
31 }
32 else
33 if (argz_len > 0)
34 return (char *) argz;
35 else
36 return NULL;
37 }
38 libc_hidden_def (__argz_next)
39 weak_alias (__argz_next, argz_next)
40 libc_hidden_weak (argz_next)
41