1 /* $Id: rsisamb.c,v 1.5 2004-01-30 11:43:41 heikki 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
32 static void *r_create(RSET ct, const struct rset_control *sel, void *parms);
33 static RSFD r_open (RSET ct, int flag);
34 static void r_close (RSFD rfd);
35 static void r_delete (RSET ct);
36 static void r_rewind (RSFD rfd);
37 static int r_count (RSET ct);
38 static int r_read (RSFD rfd, void *buf, int *term_index);
39 static int r_write (RSFD rfd, const void *buf);
41 static const struct rset_control control =
55 const struct rset_control *rset_kind_isamb = &control;
59 struct rset_pp_info *next;
60 struct rset_isamb_info *info;
65 struct rset_isamb_info {
69 int (*cmp)(const void *p1, const void *p2);
70 struct rset_pp_info *ispt_list;
73 static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
75 rset_isamb_parms *pt = (rset_isamb_parms *) parms;
76 struct rset_isamb_info *info;
78 ct->flags |= RSET_FLAG_VOLATILE;
79 info = (struct rset_isamb_info *) xmalloc (sizeof(*info));
82 info->key_size = pt->key_size;
84 info->ispt_list = NULL;
85 ct->no_rset_terms = 1;
86 ct->rset_terms = (RSET_TERM *) xmalloc (sizeof(*ct->rset_terms));
87 ct->rset_terms[0] = pt->rset_term;
91 RSFD r_open (RSET ct, int flag)
93 struct rset_isamb_info *info = (struct rset_isamb_info *) ct->buf;
94 struct rset_pp_info *ptinfo;
96 logf (LOG_DEBUG, "risamb_open");
97 if (flag & RSETF_WRITE)
99 logf (LOG_FATAL, "ISAMB set type is read-only");
102 ptinfo = (struct rset_pp_info *) xmalloc (sizeof(*ptinfo));
103 ptinfo->next = info->ispt_list;
104 info->ispt_list = ptinfo;
105 ptinfo->pt = isamb_pp_open (info->is, info->pos);
107 if (ct->rset_terms[0]->nn < 0)
108 ct->rset_terms[0]->nn = isamb_pp_num (ptinfo->pt);
109 ct->rset_terms[0]->count = 0;
110 ptinfo->countp = &ct->rset_terms[0]->count;
111 ptinfo->buf = xmalloc (info->key_size);
115 static void r_close (RSFD rfd)
117 struct rset_isamb_info *info = ((struct rset_pp_info*) rfd)->info;
118 struct rset_pp_info **ptinfop;
120 for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
123 xfree ((*ptinfop)->buf);
124 isamb_pp_close ((*ptinfop)->pt);
125 *ptinfop = (*ptinfop)->next;
129 logf (LOG_FATAL, "r_close but no rfd match!");
133 static void r_delete (RSET ct)
135 struct rset_isamb_info *info = (struct rset_isamb_info *) ct->buf;
137 logf (LOG_DEBUG, "rsisamb_delete");
138 assert (info->ispt_list == NULL);
139 rset_term_destroy (ct->rset_terms[0]);
140 xfree (ct->rset_terms);
144 static void r_rewind (RSFD rfd)
146 logf (LOG_DEBUG, "rsisamb_rewind");
150 static int r_count (RSET ct)
155 static int r_read (RSFD rfd, void *buf, int *term_index)
157 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
160 r = isamb_pp_read(pinfo->pt, buf);
163 if (*pinfo->countp == 0 || (*pinfo->info->cmp)(buf, pinfo->buf) > 1)
165 memcpy (pinfo->buf, buf, pinfo->info->key_size);
172 static int r_write (RSFD rfd, const void *buf)
174 logf (LOG_FATAL, "ISAMB set type is read-only");