Mercurial > hg > octave-lojdl > gnulib-hg

annotate lib/setenv.h @ 5102:d39dc0b72f5b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
* getndelim2.c: Include stddef.h, for ptrdiff_t.
author Paul Eggert <eggert@cs.ucla.edu>
date Sat, 10 Jul 2004 07:58:10 +0000
parents e2dea0e5b24a
children 20b173a370ec
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4084
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
1 /* Setting environment variables.
4591
e2dea0e5b24a Indent nested cpp directive.
Jim Meyering <jim@meyering.net>
parents: 4084
diff changeset
2 Copyright (C) 2001-2003 Free Software Foundation, Inc.
4084
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
3
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
4 This program is free software; you can redistribute it and/or modify
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
5 it under the terms of the GNU General Public License as published by
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
6 the Free Software Foundation; either version 2, or (at your option)
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
7 any later version.
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
8
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
9 This program is distributed in the hope that it will be useful,
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
12 GNU General Public License for more details.
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
13
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
14 You should have received a copy of the GNU General Public License
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
15 along with this program; if not, write to the Free Software Foundation,
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
17
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
18 #if HAVE_SETENV || HAVE_UNSETENV
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
19
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
20 /* Get setenv(), unsetenv() declarations. */
4591
e2dea0e5b24a Indent nested cpp directive.
Jim Meyering <jim@meyering.net>
parents: 4084
diff changeset
21 # include <stdlib.h>
575
Jim Meyering <jim@meyering.net>
parents:
diff changeset
22
4084
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
23 #endif
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
24
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
25 #ifdef __cplusplus
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
26 extern "C" {
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
27 #endif
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
28
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
29 #if !HAVE_SETENV
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
30
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
31 /* Set NAME to VALUE in the environment.
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
32 If REPLACE is nonzero, overwrite an existing value. */
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
33 extern int setenv (const char *name, const char *value, int replace);
575
Jim Meyering <jim@meyering.net>
parents:
diff changeset
34
4084
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
35 #endif
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
36
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
37 #if !HAVE_UNSETENV
575
Jim Meyering <jim@meyering.net>
parents:
diff changeset
38
4084
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
39 /* Remove the variable NAME from the environment. */
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
40 extern int unsetenv (const char *name);
575
Jim Meyering <jim@meyering.net>
parents:
diff changeset
41
4084
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
42 #endif
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
43
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
44 #ifdef __cplusplus
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
45 }
5248d7d55666 Rewritten to cope with systems that have setenv() but not unsetenv().
Bruno Haible <bruno@clisp.org>
parents: 653
diff changeset
46 #endif