170ab11075
Add support for per-variable callbacks to the "hashtable" functions. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> !!!fix comment in callback
56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/*
|
|
* (C) Copyright 2012
|
|
* Joe Hershberger, National Instruments, joe.hershberger@ni.com
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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 of
|
|
* the License, 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., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef __ENV_ATTR_H__
|
|
#define __ENV_ATTR_H__
|
|
|
|
#define ENV_ATTR_LIST_DELIM ','
|
|
#define ENV_ATTR_SEP ':'
|
|
|
|
/*
|
|
* env_attr_walk takes as input an "attr_list" that takes the form:
|
|
* attributes = [^,:\s]*
|
|
* entry = name[:attributes]
|
|
* list = entry[,list]
|
|
* It will call the "callback" function with the "name" and attribute as "value"
|
|
* The callback may return a non-0 to abort the list walk.
|
|
* This return value will be passed through to the caller.
|
|
* 0 is returned on success.
|
|
*/
|
|
extern int env_attr_walk(const char *attr_list,
|
|
int (*callback)(const char *name, const char *value));
|
|
|
|
/*
|
|
* env_attr_lookup takes as input an "attr_list" with the same form as above.
|
|
* It also takes as input a "name" to look for.
|
|
* If the name is found in the list, it's value is copied into "attributes".
|
|
* There is no protection on attributes being too small for the value.
|
|
* It returns -1 if attributes is NULL, 1 if "name" is not found, 2 if
|
|
* "attr_list" is NULL.
|
|
* Returns 0 on success.
|
|
*/
|
|
extern int env_attr_lookup(const char *attr_list, const char *name,
|
|
char *attributes);
|
|
|
|
#endif /* __ENV_ATTR_H__ */
|