2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.6 1995-09-06 16:10:58 adam
8 * More work on boolean sets.
10 * Revision 1.5 1995/09/04 15:20:13 adam
11 * More work on temp sets. is_open member removed.
13 * Revision 1.4 1995/09/04 09:09:52 adam
14 * String arg in dict lookup is const.
17 * Revision 1.3 1994/11/22 13:15:27 quinn
20 * Revision 1.2 1994/11/04 13:21:21 quinn
23 * Revision 1.1 1994/11/03 14:13:22 quinn
24 * Result set manipulation
33 typedef struct rset_control
35 char *desc; /* text description of set type (for debugging) */
36 void *buf; /* state data stored by subsystem */
37 struct rset_control *(*f_create)(const struct rset_control *sel, void *parms);
38 int (*f_open)(struct rset_control *ct, int wflag);
39 void (*f_close)(struct rset_control *ct);
40 void (*f_delete)(struct rset_control *ct);
41 void (*f_rewind)(struct rset_control *ct);
42 int (*f_count)(struct rset_control *ct);
43 int (*f_read)(struct rset_control *ct, void *buf);
44 int (*f_write)(struct rset_control *ct, const void *buf);
49 rset_control *control;
52 RSET rset_create(const rset_control *sel, void *parms); /* parameters? */
54 /* int rset_open(RSET rs, int wflag); */
55 #define rset_open(rs, wflag) ((*(rs)->control->f_open)((rs)->control, (wflag)))
57 /* void rset_close(RSET rs); */
58 #define rset_close(rs) ((*(rs)->control->f_close)((rs)->control))
60 void rset_delete(RSET rs);
62 /* void rset_rewind(RSET rs); */
63 #define rset_rewind(rs) ((*(rs)->control->f_rewind)((rs)->control))
65 /* int rset_count(RSET rs); */
66 #define rset_count(rs) ((*(rs)->control->f_count)((rs)->control))
68 /* int rset_read(RSET rs, void *buf); */
69 #define rset_read(rs, buf) ((*(rs)->control->f_read)((rs)->control, (buf)))
71 /* int rset_write(RSET rs, const void *buf); */
72 #define rset_write(rs, buf) ((*(rs)->control->f_write)((rs)->control, (buf)))