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Imported from ../bash-2.05b.tar.gz.

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This commit is contained in:
Jari Aalto 2002-07-17 14:10:11 +00:00
commit 7117c2d221
362 changed files with 34387 additions and 15063 deletions
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48
hashlib.h
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@ -23,10 +23,19 @@
#include "stdc.h"
#ifndef PTR_T
# ifdef __STDC__
# define PTR_T void *
# else
# define PTR_T char *
# endif
#endif
typedef struct bucket_contents {
struct bucket_contents *next; /* Link to next hashed key in this bucket. */
char *key; /* What we look up. */
char *data; /* What we really want. */
PTR_T data; /* What we really want. */
unsigned int khash; /* What key hashes to */
int times_found; /* Number of times this item has been found. */
} BUCKET_CONTENTS;
@ -36,27 +45,42 @@ typedef struct hash_table {
int nentries; /* How many entries does this table have. */
} HASH_TABLE;
extern int hash_string __P((const char *, HASH_TABLE *));
extern int hash_table_nentries __P((HASH_TABLE *));
extern HASH_TABLE *make_hash_table __P((int));
extern HASH_TABLE *copy_hash_table __P((HASH_TABLE *, sh_string_func_t *));
extern BUCKET_CONTENTS *find_hash_item __P((const char *, HASH_TABLE *));
extern BUCKET_CONTENTS *remove_hash_item __P((const char *, HASH_TABLE *));
extern BUCKET_CONTENTS *add_hash_item __P((char *, HASH_TABLE *));
extern void flush_hash_table __P((HASH_TABLE *, sh_free_func_t *));
extern void dispose_hash_table __P((HASH_TABLE *));
typedef int hash_wfunc __P((BUCKET_CONTENTS *));
/* Operations on tables as a whole */
extern HASH_TABLE *hash_create __P((int));
extern HASH_TABLE *hash_copy __P((HASH_TABLE *, sh_string_func_t *));
extern void hash_flush __P((HASH_TABLE *, sh_free_func_t *));
extern void hash_dispose __P((HASH_TABLE *));
extern void hash_walk __P((HASH_TABLE *, hash_wfunc *));
/* Operations to extract information from or pieces of tables */
extern int hash_bucket __P((const char *, HASH_TABLE *));
extern int hash_size __P((HASH_TABLE *));
/* Operations on hash table entries */
extern BUCKET_CONTENTS *hash_search __P((const char *, HASH_TABLE *, int));
extern BUCKET_CONTENTS *hash_insert __P((char *, HASH_TABLE *, int));
extern BUCKET_CONTENTS *hash_remove __P((const char *, HASH_TABLE *, int));
/* Miscellaneous */
extern unsigned int hash_string __P((const char *));
/* Redefine the function as a macro for speed. */
#define get_hash_bucket(bucket, table) \
#define hash_items(bucket, table) \
((table && (bucket < table->nbuckets)) ? \
table->bucket_array[bucket] : \
(BUCKET_CONTENTS *)NULL)
/* Default number of buckets in the hash table. */
#define DEFAULT_HASH_BUCKETS 53 /* was 107 */
#define DEFAULT_HASH_BUCKETS 64 /* was 107, then 53, must be power of two now */
#define HASH_ENTRIES(ht) ((ht) ? (ht)->nentries : 0)
/* flags for hash_search and hash_insert */
#define HASH_NOSRCH 0x01
#define HASH_CREATE 0x02
#if !defined (NULL)
# if defined (__STDC__)
# define NULL ((void *) 0)