120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/* $Header$ */
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#ifndef ST_INCLUDED
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#define ST_INCLUDED
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/* Function prototypes */
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#ifdef __STDC__
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#define ARGS(args) args
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#else
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#define ARGS(args) ()
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#endif
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extern char st_pkg_name[];
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/* Fatal error codes */
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#define ST_NO_MEM 0
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#define ST_BAD_RET 1
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#define ST_BAD_GEN 2
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typedef struct st_table_entry st_table_entry;
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struct st_table_entry {
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char *key;
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char *record;
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st_table_entry *next;
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};
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typedef struct st_table st_table;
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struct st_table {
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int (*compare) ();
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int (*hash) ();
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int num_bins;
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int num_entries;
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int max_density;
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int reorder_flag;
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double grow_factor;
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st_table_entry **bins;
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};
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typedef struct st_generator st_generator;
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struct st_generator {
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st_table *table;
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st_table_entry *entry;
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int idx;
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};
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#define st_is_member(table,key) st_lookup(table,key,(char **) 0)
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#define st_count(table) ((table)->num_entries)
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enum st_retval {
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ST_CONTINUE, ST_STOP, ST_DELETE
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};
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extern st_table *st_init_table_with_params
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ARGS((int (*compare) (), int (*hash) (), int size, int density,
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double grow_factor, int reorder_flag));
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extern st_table *st_init_table
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ARGS((int (*compare) (), int (*hash) ()));
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extern void st_free_table
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ARGS((st_table * table));
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extern int st_lookup
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ARGS((st_table * table, char *key, char **value));
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extern int st_insert
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ARGS((st_table * table, char *key, char *value));
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extern void st_add_direct
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ARGS((st_table * table, char *key, char *value));
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extern int st_find_or_add
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ARGS((st_table * table, char *key, char ***slot));
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extern int st_find
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ARGS((st_table * table, char *key, char ***slot));
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extern st_table *st_copy
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ARGS((st_table * old_table));
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extern int st_delete
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ARGS((st_table * table, char **keyp, char **value));
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extern int st_foreach
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ARGS((st_table * table, enum st_retval(*func) (), char *arg));
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extern int st_strhash
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ARGS((char *string, int modulus));
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extern int st_numhash
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ARGS((char *x, int size));
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extern int st_ptrhash
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ARGS((char *x, int size));
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extern int st_numcmp
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ARGS((char *x, char *y));
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extern int st_ptrcmp
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ARGS((char *x, char *y));
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extern st_generator *st_init_gen
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ARGS((st_table * table));
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extern int st_gen
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ARGS((st_generator * gen, char **key_p, char **value_p));
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extern void st_free_gen
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ARGS((st_generator * gen));
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#define ST_DEFAULT_MAX_DENSITY 5
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#define ST_DEFAULT_INIT_TABLE_SIZE 11
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#define ST_DEFAULT_GROW_FACTOR 2.0
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#define ST_DEFAULT_REORDER_FLAG 0
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#define st_foreach_item(table, gen, key_p, value_p) \
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for(gen=st_init_gen(table); st_gen(gen,key_p,value_p) || (st_free_gen(gen),0);)
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#endif /* ST_INCLUDED */
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