1 /* $Id: rsisamb.c,v 1.17 2004-08-24 14:25:16 heikki Exp $
2 Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
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
28 #include <../index/index.h> /* for log_keydump. Debugging only */
34 static RSFD r_open (RSET ct, int flag);
35 static void r_close (RSFD rfd);
36 static void r_delete (RSET ct);
37 static void r_rewind (RSFD rfd);
38 static int r_forward(RSET ct, RSFD rfd, void *buf,
39 int (*cmpfunc)(const void *p1, const void *p2),
40 const void *untilbuf);
41 static void r_pos (RSFD rfd, double *current, double *total);
42 static int r_read (RSFD rfd, void *buf);
43 static int r_write (RSFD rfd, const void *buf);
45 static const struct rset_control control =
52 r_forward, /* rset_default_forward, */
58 const struct rset_control *rset_kind_isamb = &control;
62 struct rset_pp_info *next;
63 struct rset_isamb_info *info;
67 struct rset_isamb_info {
71 int (*cmp)(const void *p1, const void *p2);
72 struct rset_pp_info *ispt_list;
75 RSET rsisamb_create( NMEM nmem, int key_size,
76 int (*cmp)(const void *p1, const void *p2),
77 ISAMB is, ISAMB_P pos)
79 RSET rnew=rset_create_base(&control, nmem);
80 struct rset_isamb_info *info;
81 info = (struct rset_isamb_info *) nmem_malloc(rnew->nmem,sizeof(*info));
82 info->key_size = key_size;
86 info->ispt_list = NULL;
91 static void r_delete (RSET ct)
93 struct rset_isamb_info *info = (struct rset_isamb_info *) ct->priv;
95 logf (LOG_DEBUG, "rsisamb_delete");
96 assert (info->ispt_list == NULL);
100 static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
102 rset_isamb_parms *pt = (rset_isamb_parms *) parms;
103 struct rset_isamb_info *info;
105 info = (struct rset_isamb_info *) xmalloc (sizeof(*info));
108 info->key_size = pt->key_size;
110 info->ispt_list = NULL;
115 RSFD r_open (RSET ct, int flag)
117 struct rset_isamb_info *info = (struct rset_isamb_info *) ct->priv;
118 struct rset_pp_info *ptinfo;
120 logf (LOG_DEBUG, "risamb_open");
121 if (flag & RSETF_WRITE)
123 logf (LOG_FATAL, "ISAMB set type is read-only");
126 ptinfo = (struct rset_pp_info *) xmalloc (sizeof(*ptinfo));
127 ptinfo->next = info->ispt_list;
128 info->ispt_list = ptinfo;
129 ptinfo->pt = isamb_pp_open (info->is, info->pos);
131 ptinfo->buf = xmalloc (info->key_size);
135 static void r_close (RSFD rfd)
137 struct rset_isamb_info *info = ((struct rset_pp_info*) rfd)->info;
138 struct rset_pp_info **ptinfop;
140 for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
143 xfree ((*ptinfop)->buf);
144 isamb_pp_close ((*ptinfop)->pt);
145 *ptinfop = (*ptinfop)->next;
149 logf (LOG_FATAL, "r_close but no rfd match!");
154 static void r_rewind (RSFD rfd)
156 logf (LOG_DEBUG, "rsisamb_rewind");
160 static int r_forward(RSET ct, RSFD rfd, void *buf,
161 int (*cmpfunc)(const void *p1, const void *p2),
162 const void *untilbuf)
165 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
167 logf (LOG_DEBUG, "rset_rsisamb_forward starting '%s' (ct=%p rfd=%p)",
168 ct->control->desc, ct,rfd);
169 key_logdump(LOG_DEBUG, untilbuf);
170 key_logdump(LOG_DEBUG, buf);
173 i=isamb_pp_forward(pinfo->pt, buf, untilbuf);
175 logf (LOG_DEBUG, "rset_rsisamb_forward returning %d",i);
180 static void r_pos (RSFD rfd, double *current, double *total)
182 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
184 isamb_pp_pos(pinfo->pt, current, total);
186 logf(LOG_DEBUG,"isamb.r_pos returning %0.1f/%0.1f",
191 static int r_read (RSFD rfd, void *buf)
193 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
196 r = isamb_pp_read(pinfo->pt, buf);
200 static int r_write (RSFD rfd, const void *buf)
202 logf (LOG_FATAL, "ISAMB set type is read-only");