2 * Copyright (c) 1995-1996, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.4 1996-11-08 11:08:01 adam
8 * New internal release.
10 * Revision 1.3 1996/11/01 13:35:03 adam
11 * New element, max_blocks_mem, that control how many blocks of max size
12 * to store in memory during isc_merge.
14 * Revision 1.2 1996/10/29 16:44:42 adam
15 * Added isc_type, isc_block macros.
17 * Revision 1.1 1996/10/29 13:40:37 adam
25 typedef struct ISAMC_s *ISAMC;
27 typedef struct ISAMC_PP_s *ISAMC_PP;
29 typedef struct ISAMC_filecat_s {
30 int bsize; /* block size */
31 int ifill; /* initial fill */
32 int mfill; /* minimum fill */
33 int mblocks; /* maximum blocks */
36 typedef struct ISAMC_M_s {
37 ISAMC_filecat filecat;
39 int (*compare_item)(const void *a, const void *b);
41 #define ISAMC_DECODE 0
42 #define ISAMC_ENCODE 1
43 void *(*code_start)(int mode);
44 void (*code_stop)(int mode, void *p);
45 void (*code_item)(int mode, void *p, char **dst, char **src);
51 typedef struct ISAMC_I_s {
52 int (*read_item)(void *clientData, char **dst, int *insertMode);
56 ISAMC_M isc_getmethod (void);
58 ISAMC isc_open (const char *name, int writeflag, ISAMC_M method);
59 int isc_close (ISAMC is);
60 ISAMC_P isc_merge (ISAMC is, ISAMC_P pos, ISAMC_I data);
62 ISAMC_PP isc_pp_open (ISAMC is, ISAMC_P pos);
63 void isc_pp_close (ISAMC_PP pp);
64 int isc_read_item (ISAMC_PP pp, char **dst);
65 int isc_pp_read (ISAMC_PP pp, void *buf);
66 int isc_pp_num (ISAMC_PP pp);
68 #define isc_type(x) ((x) & 7)
69 #define isc_block(x) ((x) >> 3)