/usr/include/kannel/gwlib/dict.h is in kannel-dev 1.4.3-2+b2.
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* The Kannel Software License, Version 1.0
*
* Copyright (c) 2001-2009 Kannel Group
* Copyright (c) 1998-2001 WapIT Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Kannel Group (http://www.kannel.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Kannel" and "Kannel Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact org@kannel.org.
*
* 5. Products derived from this software may not be called "Kannel",
* nor may "Kannel" appear in their name, without prior written
* permission of the Kannel Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE KANNEL GROUP OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Kannel Group. For more information on
* the Kannel Group, please see <http://www.kannel.org/>.
*
* Portions of this software are based upon software originally written at
* WapIT Ltd., Helsinki, Finland for the Kannel project.
*/
/*
* dict.h - lookup data structure using octet strings as keys
*
* A Dict is an abstract data structure that stores values, represented as
* void pointers, and uses octet strings (Octstr) as keys. You can think
* of it as an array indexed by octet strings.
*
* Lars Wirzenius
*/
#ifndef DICT_H
#define DICT_H
typedef struct Dict Dict;
/*
* Create a Dict. `size_hint' gives an indication of how many different
* keys will be in the Dict at the same time, at most. This is used for
* performance optimization; things will work fine, though somewhat
* slower, even if it the number is exceeded. `destroy_value' is a pointer
* to a function that is called whenever a value stored in the Dict needs
* to be destroyed. If `destroy_value' is NULL, then values are not
* destroyed by the Dict, they are just discarded.
*/
Dict *dict_create(long size_hint, void (*destroy_value)(void *));
/*
* Destroy a Dict and all values in it.
*/
void dict_destroy(Dict *dict);
/*
* Put a new value into a Dict. If the same key existed already, the
* old value is destroyed. If `value' is NULL, the old value is destroyed
* and the key is removed from the Dict.
*/
void dict_put(Dict *dict, Octstr *key, void *value);
/*
* Put a new value into a Dict. Return error, if the same key existed all-
* ready.
*/
int dict_put_once(Dict *dict, Octstr *key, void *value);
/*
* Look up a value in a Dict. If there is no value corresponding to a
* key, return NULL, otherwise return the value. The value will not
* be removed from the Dict.
*/
void *dict_get(Dict *dict, Octstr *key);
/*
* Remove a value from a Dict without destroying it.
*/
void *dict_remove(Dict *dict, Octstr *key);
/*
* Return the number of keys which currently exist in the Dict.
*/
long dict_key_count(Dict *dict);
/*
* Return a list of all the currently defined keys in the Dict. The
* caller must destroy the list.
*/
List *dict_keys(Dict *dict);
#endif
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