| 1 |
< |
/* Copyright (c) 1994 Regents of the University of California */ |
| 2 |
< |
|
| 3 |
< |
/* SCCSid "$SunId$ LBL" */ |
| 4 |
< |
|
| 1 |
> |
/* RCSid $Id$ */ |
| 2 |
|
/* |
| 3 |
|
* Header file for general associative table lookup routines |
| 4 |
|
*/ |
| 5 |
+ |
#ifndef _RAD_LOOKUP_H_ |
| 6 |
+ |
#define _RAD_LOOKUP_H_ |
| 7 |
|
|
| 8 |
+ |
#include <string.h> /* strcmp() */ |
| 9 |
+ |
|
| 10 |
+ |
#ifdef __cplusplus |
| 11 |
+ |
extern "C" { |
| 12 |
+ |
#endif |
| 13 |
+ |
|
| 14 |
+ |
typedef void lut_free_t(void*); |
| 15 |
+ |
|
| 16 |
|
typedef struct { |
| 17 |
< |
char *key; /* key name */ |
| 18 |
< |
long hval; /* key hash value (for efficiency) */ |
| 19 |
< |
char *data; /* pointer to client data */ |
| 17 |
> |
char *key; /* key name */ |
| 18 |
> |
unsigned long hval; /* key hash value (for efficiency) */ |
| 19 |
> |
char *data; /* pointer to client data */ |
| 20 |
|
} LUENT; |
| 21 |
|
|
| 22 |
|
typedef struct { |
| 23 |
< |
long (*hashf)(); /* key hash function */ |
| 24 |
< |
int (*keycmp)(); /* key comparison function */ |
| 25 |
< |
void (*freek)(); /* free a key */ |
| 26 |
< |
void (*freed)(); /* free the data */ |
| 27 |
< |
int tsiz; /* current table size */ |
| 28 |
< |
LUENT *tabl; /* table, if allocated */ |
| 29 |
< |
int ndel; /* number of deleted entries */ |
| 23 |
> |
unsigned long (*hashf)(char*); /* key hash function */ |
| 24 |
> |
int (*keycmp)(const char*, const char*); /* key comparison function */ |
| 25 |
> |
lut_free_t *freek; /* free a key */ |
| 26 |
> |
lut_free_t *freed; /* free the data */ |
| 27 |
> |
int tsiz; /* current table size */ |
| 28 |
> |
LUENT *tabl; /* table, if allocated */ |
| 29 |
> |
int ndel; /* number of deleted entries */ |
| 30 |
|
} LUTAB; |
| 31 |
|
|
| 32 |
< |
#define LU_SINIT(fk,fd) {lu_shash,strcmp,(void (*)())(fk),\ |
| 33 |
< |
(void (*)())(fd),0,NULL,0} |
| 32 |
> |
#undef strcmp |
| 33 |
> |
#define LU_SINIT(fk,fd) {lu_shash,strcmp,fk,\ |
| 34 |
> |
fd,0,NULL,0} |
| 35 |
|
|
| 36 |
|
/* |
| 37 |
|
* The lu_init routine is called to initialize a table. The number of |
| 64 |
|
* The lu_delete routine frees an entry's data (if any) by calling |
| 65 |
|
* the freed member function, but does not free the key field. This |
| 66 |
|
* will be freed later during (or instead of) table reallocation. |
| 67 |
+ |
* It is therefore an error to reuse or do anything with the key |
| 68 |
+ |
* field after calling lu_delete. |
| 69 |
|
* |
| 70 |
+ |
* The lu_doall routine loops through every filled table entry, calling |
| 71 |
+ |
* the given function once on each entry. If a NULL pointer is passed |
| 72 |
+ |
* for this function, then lu_doall simply returns the total number of |
| 73 |
+ |
* active entries. Otherwise, it returns the sum of all the function |
| 74 |
+ |
* evaluations. |
| 75 |
+ |
* |
| 76 |
|
* The lu_done routine calls the given free function once for each |
| 77 |
|
* assigned table entry (i.e. each entry with an assigned key value). |
| 78 |
|
* The user must define these routines to free the key and the data |
| 80 |
|
* allocated table itself. |
| 81 |
|
*/ |
| 82 |
|
|
| 83 |
< |
#ifdef NOPROTO |
| 84 |
< |
extern int lu_init(); |
| 85 |
< |
extern LUENT *lu_find(); |
| 86 |
< |
extern void lu_delete(); |
| 87 |
< |
extern void lu_done(); |
| 88 |
< |
extern long lu_shash(); |
| 89 |
< |
#else |
| 90 |
< |
extern int lu_init(LUTAB *, int); |
| 91 |
< |
extern LUENT *lu_find(LUTAB *, char *); |
| 92 |
< |
extern void lu_delete(LUTAB *, char *); |
| 77 |
< |
extern void lu_done(LUTAB *); |
| 78 |
< |
extern long lu_shash(char *); |
| 83 |
> |
extern int lu_init(LUTAB *tbl, int nel); |
| 84 |
> |
extern unsigned long lu_shash(char *s); |
| 85 |
> |
extern LUENT *lu_find(LUTAB *tbl, char *key); |
| 86 |
> |
extern void lu_delete(LUTAB *tbl, char *key); |
| 87 |
> |
extern int lu_doall(LUTAB *tbl, int (*f)(LUENT*)); |
| 88 |
> |
extern void lu_done(LUTAB *tbl); |
| 89 |
> |
|
| 90 |
> |
|
| 91 |
> |
#ifdef __cplusplus |
| 92 |
> |
} |
| 93 |
|
#endif |
| 94 |
+ |
#endif /* _RAD_LOOKUP_H_ */ |
| 95 |
|
|
| 81 |
– |
extern int strcmp(); |
