/usr/include/kannel/gw/numhash.h is in kannel-dev 1.4.3-2fakesync2build1.
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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.
*/
/*
* numhash.h - (telephone) number storing/hashing system
*
* Kalle Marjola 2000 for project Kannel
*
* !!! NOTE NOTE NOTE !!!
*
* Phone number precision is limited according to sizeof(long)
* in host machine. that is usually either 32 or 64 bits. In a
* case of 32 bit longs, only last 9 digits are checked, otherwise
* last 18 digits. This means that in some places several numbers
* might map to same hash entry, and thus some caution is needed
* specially with telephone number black lists
*
* USAGE:
* the system is not very dynamic; if you want to resize the table
* or hash, you must first nuke all old data and then recreate it
*
* MEMORY NEEDED: (approximated)
*
* 2* (sizeof(long)+sizeof(void *)) bytes per number
*/
#ifndef NUMHASH_H
#define NUMHASH_H
#include <stdio.h>
/* number hashing/seeking functions
* all return -1 on error and write to general Kannel log
*
* these 2 first are only required if you want to add the numbers
* by hand - otherwise use the last function instead
*
* use prime_hash if you want an automatically generated hash size
*/
typedef struct numhash_table Numhash;
/* get numbers from 'url' and create a new database out of them
* Return NULL if cannot open database or other error, error is logged
*
* Numbers to datafile are saved as follows:
* - one number per line
* - number might have white spaces, '+' and '-' signs
* - number is ended with ':' or end-of-line
* - there can be additional comment after ':'
*
* For example, all following ones are valid lines:
* 040 1234
* +358 40 1234
* +358 40-1234 : Kalle Marjola
*/
Numhash *numhash_create(char *url);
/* destroy hash and all numbers in it */
void numhash_destroy(Numhash *table);
/* check if the number is in database, return 1 if found, 0 if not,
* -1 on error */
int numhash_find_number(Numhash *table, Octstr *nro);
/* if we already have the key */
int numhash_find_key(Numhash *table, long key);
/* if we want to know the key */
long numhash_get_key(Octstr *nro);
long numhash_get_char_key(char *nro);
/* Return hash fill percent. If 'longest' != NULL, set as longest
* trail in hash */
double numhash_hash_fill(Numhash *table, int *longest);
/* return number of numbers in hash */
int numhash_size(Numhash *table);
#endif
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