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#ifndef foohashmaphfoo
#define foohashmaphfoo
/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio 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 Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
/* Simple Implementation of a hash table. Memory management is the
* user's job. It's a good idea to have the key pointer point to a
* string in the value data. */
typedef struct pa_hashmap pa_hashmap;
/* Create a new hashmap. Use the specified functions for hashing and comparing objects in the map */
pa_hashmap *pa_hashmap_new(unsigned (*hash_func) (const void *p), int (*compare_func) (const void*a, const void*b));
/* Free the hash table. Calls the specified function for every value in the table. The function may be NULL */
void pa_hashmap_free(pa_hashmap*, void (*free_func)(void *p, void *userdata), void *userdata);
/* Returns non-zero when the entry already exists */
int pa_hashmap_put(pa_hashmap *h, const void *key, void *value);
void* pa_hashmap_get(pa_hashmap *h, const void *key);
/* Returns the data of the entry while removing */
void* pa_hashmap_remove(pa_hashmap *h, const void *key);
unsigned pa_hashmap_size(pa_hashmap *h);
/* May be used to iterate through the hashmap. Initially the opaque
pointer *state has to be set to NULL. The hashmap may not be
modified during iteration. The key of the entry is returned in
*key, if key is non-NULL. After the last entry in the hashmap NULL
is returned. */
void *pa_hashmap_iterate(pa_hashmap *h, void **state, const void**key);
#endif
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