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392d7920 | 1 | /* Routines for dealing with '\0' separated arg vectors. |
688903eb | 2 | Copyright (C) 1995-2018 Free Software Foundation, Inc. |
c84142e8 | 3 | This file is part of the GNU C Library. |
392d7920 RM |
4 | Written by Miles Bader <miles@gnu.ai.mit.edu> |
5 | ||
c84142e8 | 6 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
392d7920 | 10 | |
c84142e8 UD |
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 | |
392d7920 | 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 | 14 | Lesser General Public License for more details. |
392d7920 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
392d7920 RM |
19 | |
20 | #include <argz.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | ||
24 | /* Make a '\0' separated arg vector from a unix argv vector, returning it in | |
25 | ARGZ, and the total length in LEN. If a memory allocation error occurs, | |
26 | ENOMEM is returned, otherwise 0. */ | |
27 | error_t | |
4d4b4875 | 28 | __argz_create (char *const argv[], char **argz, size_t *len) |
392d7920 RM |
29 | { |
30 | int argc; | |
31 | size_t tlen = 0; | |
8f0c527e RM |
32 | char *const *ap; |
33 | char *p; | |
392d7920 RM |
34 | |
35 | for (argc = 0; argv[argc] != NULL; ++argc) | |
de3bf9b1 | 36 | tlen += strlen (argv[argc]) + 1; |
392d7920 RM |
37 | |
38 | if (tlen == 0) | |
39 | *argz = NULL; | |
40 | else | |
41 | { | |
c84142e8 | 42 | *argz = malloc (tlen); |
392d7920 RM |
43 | if (*argz == NULL) |
44 | return ENOMEM; | |
45 | ||
46 | for (p = *argz, ap = argv; *ap; ++ap, ++p) | |
47 | p = __stpcpy (p, *ap); | |
48 | } | |
49 | *len = tlen; | |
50 | ||
51 | return 0; | |
52 | } | |
53 | weak_alias (__argz_create, argz_create) |