#ifndef _hash_h_
#define _hash_h_
#include <stdio.h>
#include <ctype.h>
#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
# if !defined __GLIBC__ || !defined __P
# undef __P
# define __P(protos) protos
# endif
#else
# undef __P
# define __P(protos) ()
#endif
typedef unsigned long (*hash_func_t) __P((void const *key));
typedef int (*hash_cmp_func_t) __P((void const *x, void const *y));
typedef void (*hash_map_func_t) __P((void const *item));
typedef void (*hash_map_arg_func_t) __P((void const *item, void *arg));
struct hash_table
{
void **ht_vec;
unsigned long ht_size;
unsigned long ht_capacity;
unsigned long ht_fill;
unsigned long ht_empty_slots;
unsigned long ht_collisions;
unsigned long ht_lookups;
unsigned int ht_rehashes;
hash_func_t ht_hash_1;
hash_func_t ht_hash_2;
hash_cmp_func_t ht_compare;
};
typedef int (*qsort_cmp_t) __P((void const *, void const *));
void hash_init __P((struct hash_table *ht, unsigned long size,
hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp));
void hash_load __P((struct hash_table *ht, void *item_table,
unsigned long cardinality, unsigned long size));
void **hash_find_slot __P((struct hash_table *ht, void const *key));
void *hash_find_item __P((struct hash_table *ht, void const *key));
void *hash_insert __P((struct hash_table *ht, const void *item));
void *hash_insert_at __P((struct hash_table *ht, const void *item, void const *slot));
void *hash_delete __P((struct hash_table *ht, void const *item));
void *hash_delete_at __P((struct hash_table *ht, void const *slot));
void hash_delete_items __P((struct hash_table *ht));
void hash_free_items __P((struct hash_table *ht));
void hash_free __P((struct hash_table *ht, int free_items));
void hash_map __P((struct hash_table *ht, hash_map_func_t map));
void hash_map_arg __P((struct hash_table *ht, hash_map_arg_func_t map, void *arg));
void hash_print_stats __P((struct hash_table *ht, FILE *out_FILE));
void **hash_dump __P((struct hash_table *ht, void **vector_0, qsort_cmp_t compare));
extern void *hash_deleted_item;
#define HASH_VACANT(item) ((item) == 0 || (void *) (item) == hash_deleted_item)
#define STRING_HASH_1(KEY, RESULT) do { \
unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
while (*++_key_) \
(RESULT) += (*_key_ << (_key_[1] & 0xf)); \
} while (0)
#define return_STRING_HASH_1(KEY) do { \
unsigned long _result_ = 0; \
STRING_HASH_1 ((KEY), _result_); \
return _result_; \
} while (0)
#define STRING_HASH_2(KEY, RESULT) do { \
unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
while (*++_key_) \
(RESULT) += (*_key_ << (_key_[1] & 0x7)); \
} while (0)
#define return_STRING_HASH_2(KEY) do { \
unsigned long _result_ = 0; \
STRING_HASH_2 ((KEY), _result_); \
return _result_; \
} while (0)
#define STRING_COMPARE(X, Y, RESULT) do { \
RESULT = strcmp ((X), (Y)); \
} while (0)
#define return_STRING_COMPARE(X, Y) do { \
return strcmp ((X), (Y)); \
} while (0)
#define STRING_N_HASH_1(KEY, N, RESULT) do { \
unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
int _n_ = (N); \
if (_n_) \
while (--_n_ && *++_key_) \
(RESULT) += (*_key_ << (_key_[1] & 0xf)); \
(RESULT) += *++_key_; \
} while (0)
#define return_STRING_N_HASH_1(KEY, N) do { \
unsigned long _result_ = 0; \
STRING_N_HASH_1 ((KEY), (N), _result_); \
return _result_; \
} while (0)
#define STRING_N_HASH_2(KEY, N, RESULT) do { \
unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
int _n_ = (N); \
if (_n_) \
while (--_n_ && *++_key_) \
(RESULT) += (*_key_ << (_key_[1] & 0x7)); \
(RESULT) += *++_key_; \
} while (0)
#define return_STRING_N_HASH_2(KEY, N) do { \
unsigned long _result_ = 0; \
STRING_N_HASH_2 ((KEY), (N), _result_); \
return _result_; \
} while (0)
#define STRING_N_COMPARE(X, Y, N, RESULT) do { \
RESULT = strncmp ((X), (Y), (N)); \
} while (0)
#define return_STRING_N_COMPARE(X, Y, N) do { \
return strncmp ((X), (Y), (N)); \
} while (0)
#ifdef HAVE_CASE_INSENSITIVE_FS
#define ISTRING_HASH_1(KEY, RESULT) do { \
unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
while (*++_key_) \
(RESULT) += ((isupper (*_key_) ? tolower (*_key_) : *_key_) << (_key_[1] & 0xf)); \
} while (0)
#define return_ISTRING_HASH_1(KEY) do { \
unsigned long _result_ = 0; \
ISTRING_HASH_1 ((KEY), _result_); \
return _result_; \
} while (0)
#define ISTRING_HASH_2(KEY, RESULT) do { \
unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
while (*++_key_) \
(RESULT) += ((isupper (*_key_) ? tolower (*_key_) : *_key_) << (_key_[1] & 0x7)); \
} while (0)
#define return_ISTRING_HASH_2(KEY) do { \
unsigned long _result_ = 0; \
ISTRING_HASH_2 ((KEY), _result_); \
return _result_; \
} while (0)
#define ISTRING_COMPARE(X, Y, RESULT) do { \
RESULT = strcmpi ((X), (Y)); \
} while (0)
#define return_ISTRING_COMPARE(X, Y) do { \
return strcmpi ((X), (Y)); \
} while (0)
#else
#define ISTRING_HASH_1(KEY, RESULT) STRING_HASH_1 ((KEY), (RESULT))
#define return_ISTRING_HASH_1(KEY) return_STRING_HASH_1 (KEY)
#define ISTRING_HASH_2(KEY, RESULT) STRING_HASH_2 ((KEY), (RESULT))
#define return_ISTRING_HASH_2(KEY) return_STRING_HASH_2 (KEY)
#define ISTRING_COMPARE(X, Y, RESULT) STRING_COMPARE ((X), (Y), (RESULT))
#define return_ISTRING_COMPARE(X, Y) return_STRING_COMPARE ((X), (Y))
#endif
#define INTEGER_HASH_1(KEY, RESULT) do { \
(RESULT) += ((unsigned long)(KEY)); \
} while (0)
#define return_INTEGER_HASH_1(KEY) do { \
unsigned long _result_ = 0; \
INTEGER_HASH_1 ((KEY), _result_); \
return _result_; \
} while (0)
#define INTEGER_HASH_2(KEY, RESULT) do { \
(RESULT) += ~((unsigned long)(KEY)); \
} while (0)
#define return_INTEGER_HASH_2(KEY) do { \
unsigned long _result_ = 0; \
INTEGER_HASH_2 ((KEY), _result_); \
return _result_; \
} while (0)
#define INTEGER_COMPARE(X, Y, RESULT) do { \
(RESULT) = X - Y; \
} while (0)
#define return_INTEGER_COMPARE(X, Y) do { \
int _result_; \
INTEGER_COMPARE (X, Y, _result_); \
return _result_; \
} while (0)
#define ADDRESS_HASH_1(KEY, RESULT) INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3, (RESULT))
#define ADDRESS_HASH_2(KEY, RESULT) INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3, (RESULT))
#define ADDRESS_COMPARE(X, Y, RESULT) INTEGER_COMPARE ((X), (Y), (RESULT))
#define return_ADDRESS_HASH_1(KEY) return_INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3)
#define return_ADDRESS_HASH_2(KEY) return_INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3)
#define return_ADDRESS_COMPARE(X, Y) return_INTEGER_COMPARE ((X), (Y))
#endif