1 /* $Id: rsisamc.c,v 1.12 2002-08-02 19:26:57 adam Exp $
2 Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
5 This file is part of the Zebra server.
7 Zebra is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with Zebra; see the file LICENSE.zebra. If not, write to the
19 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
31 static void *r_create(RSET ct, const struct rset_control *sel, void *parms);
32 static RSFD r_open (RSET ct, int flag);
33 static void r_close (RSFD rfd);
34 static void r_delete (RSET ct);
35 static void r_rewind (RSFD rfd);
36 static int r_count (RSET ct);
37 static int r_read (RSFD rfd, void *buf, int *term_index);
38 static int r_write (RSFD rfd, const void *buf);
40 static const struct rset_control control =
53 const struct rset_control *rset_kind_isamc = &control;
57 struct rset_pp_info *next;
58 struct rset_isamc_info *info;
63 struct rset_isamc_info {
67 int (*cmp)(const void *p1, const void *p2);
68 struct rset_pp_info *ispt_list;
71 static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
73 rset_isamc_parms *pt = (rset_isamc_parms *) parms;
74 struct rset_isamc_info *info;
76 ct->flags |= RSET_FLAG_VOLATILE;
77 info = (struct rset_isamc_info *) xmalloc (sizeof(*info));
80 info->key_size = pt->key_size;
82 info->ispt_list = NULL;
83 ct->no_rset_terms = 1;
84 ct->rset_terms = (RSET_TERM *) xmalloc (sizeof(*ct->rset_terms));
85 ct->rset_terms[0] = pt->rset_term;
89 RSFD r_open (RSET ct, int flag)
91 struct rset_isamc_info *info = (struct rset_isamc_info *) ct->buf;
92 struct rset_pp_info *ptinfo;
94 logf (LOG_DEBUG, "risamc_open");
95 if (flag & RSETF_WRITE)
97 logf (LOG_FATAL, "ISAMC set type is read-only");
100 ptinfo = (struct rset_pp_info *) xmalloc (sizeof(*ptinfo));
101 ptinfo->next = info->ispt_list;
102 info->ispt_list = ptinfo;
103 ptinfo->pt = isc_pp_open (info->is, info->pos);
105 if (ct->rset_terms[0]->nn < 0)
106 ct->rset_terms[0]->nn = isc_pp_num (ptinfo->pt);
107 ct->rset_terms[0]->count = 0;
108 ptinfo->countp = &ct->rset_terms[0]->count;
109 ptinfo->buf = xmalloc (info->key_size);
113 static void r_close (RSFD rfd)
115 struct rset_isamc_info *info = ((struct rset_pp_info*) rfd)->info;
116 struct rset_pp_info **ptinfop;
118 for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
121 xfree ((*ptinfop)->buf);
122 isc_pp_close ((*ptinfop)->pt);
123 *ptinfop = (*ptinfop)->next;
127 logf (LOG_FATAL, "r_close but no rfd match!");
131 static void r_delete (RSET ct)
133 struct rset_isamc_info *info = (struct rset_isamc_info *) ct->buf;
135 logf (LOG_DEBUG, "rsisamc_delete");
136 assert (info->ispt_list == NULL);
137 rset_term_destroy (ct->rset_terms[0]);
138 xfree (ct->rset_terms);
142 static void r_rewind (RSFD rfd)
144 logf (LOG_DEBUG, "rsisamc_rewind");
148 static int r_count (RSET ct)
153 static int r_read (RSFD rfd, void *buf, int *term_index)
155 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
158 r = isc_pp_read(pinfo->pt, buf);
161 if (*pinfo->countp == 0 || (*pinfo->info->cmp)(buf, pinfo->buf) > 1)
163 memcpy (pinfo->buf, buf, pinfo->info->key_size);
170 static int r_write (RSFD rfd, const void *buf)
172 logf (LOG_FATAL, "ISAMC set type is read-only");