st.h

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/* This is a public domain general purpose hash table package written by Peter Moore @ UCB. */

/* @(#) st.h 5.1 89/12/14 */

#ifndef ST_INCLUDED

#define ST_INCLUDED

typedef unsigned long st_data_t;
#define ST_DATA_T_DEFINED

typedef struct st_table st_table;

struct st_hash_type {
    int (*compare)();
    int (*hash)();
};

struct st_table {
    struct st_hash_type *type;
    int num_bins;
    int num_entries;
    struct st_table_entry **bins;
};

#define st_is_member(table,key) st_lookup(table,key,(st_data_t *)0)

enum st_retval {ST_CONTINUE, ST_STOP, ST_DELETE, ST_CHECK};

#ifndef _
# define args args
#endif
#ifndef ANYARGS
# ifdef __cplusplus
#   define ANYARGS ...
# else
#   define ANYARGS
# endif
#endif

st_table *st_init_table (struct st_hash_type *);
st_table *st_init_table_with_size (struct st_hash_type *, int);
st_table *st_init_numtable (void);
st_table *st_init_numtable_with_size (int);
st_table *st_init_strtable (void);
st_table *st_init_strtable_with_size (int);
int st_delete (st_table *, st_data_t *, st_data_t *);
int st_delete_safe (st_table *, st_data_t *, st_data_t *, st_data_t);
int st_insert (st_table *, st_data_t, st_data_t);
int st_lookup (st_table *, st_data_t, st_data_t *);
int st_foreach (st_table *, int (*(ANYARGS), st_data_t));
void st_add_direct (st_table *, st_data_t, st_data_t);
void st_free_table (st_table *);
void st_cleanup_safe (st_table *, st_data_t);
st_table *st_copy (st_table *);

#define ST_NUMCMP       ((int (*)()) 0)
#define ST_NUMHASH      ((int (*)()) -2)

#define st_numcmp       ST_NUMCMP
#define st_numhash      ST_NUMHASH

int st_strhash();

#endif /* ST_INCLUDED */

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