mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/* Routines for dealing with '\0' separated environment vectors
|
|
|
|
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
|
|
|
|
Written by Miles Bader <miles@gnu.ai.mit.edu>
|
|
|
|
This program 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 2, or (at
|
|
your option) any later version.
|
|
|
|
This program 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#ifndef __ENVZ_H__
|
|
#define __ENVZ_H__
|
|
|
|
#include <errno.h>
|
|
|
|
/* Envz's are argz's too, and should be created etc., using the same
|
|
routines. */
|
|
#include <argz.h>
|
|
|
|
/* Returns a pointer to the entry in ENVZ for NAME, or 0 if there is none. */
|
|
char *envz_entry __P ((__const char *__envz, size_t __envz_len,
|
|
__const char *__name));
|
|
|
|
/* Returns a pointer to the value portion of the entry in ENVZ for NAME, or 0
|
|
if there is none. */
|
|
char *envz_get __P ((__const char *__envz, size_t __envz_len,
|
|
__const char *__name));
|
|
|
|
/* Adds an entry for NAME with value VALUE to ENVZ & ENVZ_LEN. If an entry
|
|
with the same name already exists in ENVZ, it is removed. If VALUE is
|
|
NULL, then the new entry will a special null one, for which envz_get will
|
|
return NULL, although envz_entry will still return an entry; this is handy
|
|
because when merging with another envz, the null entry can override an
|
|
entry in the other one. Null entries can be removed with envz_strip (). */
|
|
error_t envz_add __P ((char **__envz, size_t *__envz_len,
|
|
__const char *__name, __const char *__value));
|
|
|
|
/* Adds each entry in ENVZ2 to ENVZ & ENVZ_LEN, as if with envz_add(). If
|
|
OVERRIDE is true, then values in ENVZ2 will supercede those with the same
|
|
name in ENV, otherwise not. */
|
|
error_t envz_merge __P ((char **__envz, size_t *__envz_len,
|
|
__const char *__envz2, size_t __envz2_len,
|
|
int __override));
|
|
|
|
/* Remove null entries. */
|
|
void envz_strip __P ((char **__envz, size_t *__envz_len));
|
|
|
|
#endif /* __ENVZ_H__ */
|