setenv.c
1.31 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2002, 2007, 2010-2012, 2014-2016 Free Software
Foundation, Inc.
GNU Mailutils is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Mailutils 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#include "mail.h"
#if !HAVE_DECL_ENVIRON
extern char **environ;
#endif
int
mail_setenv (int argc, char **argv)
{
if (argc == 1)
{
char **p;
for (p = environ; *p; p++)
mu_printf ("%s\n", *p);
}
else
{
int i;
/* Note: POSIX requires that the argument to putenv become part
of the environment itself, hence the memory allocation. */
for (i = 1; i < argc; i++)
{
char *value = strchr (argv[i], '=');
if (value)
*value++ = 0;
setenv (argv[i], value ? value : "", 1);
}
}
return 0;
}