1 /* $Id: rsisamb.c,v 1.15 2004-08-20 14:44:46 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 void *r_create(RSET ct, const struct rset_control *sel, void *parms);
35 static RSFD r_open (RSET ct, int flag);
36 static void r_close (RSFD rfd);
37 static void r_delete (RSET ct);
38 static void r_rewind (RSFD rfd);
39 static int r_forward(RSET ct, RSFD rfd, void *buf,
40 int (*cmpfunc)(const void *p1, const void *p2),
41 const void *untilbuf);
42 static void r_pos (RSFD rfd, double *current, double *total);
43 static int r_read (RSFD rfd, void *buf);
44 static int r_write (RSFD rfd, const void *buf);
46 static const struct rset_control control =
54 r_forward, /* rset_default_forward, */
60 const struct rset_control *rset_kind_isamb = &control;
64 struct rset_pp_info *next;
65 struct rset_isamb_info *info;
69 struct rset_isamb_info {
73 int (*cmp)(const void *p1, const void *p2);
74 struct rset_pp_info *ispt_list;
77 static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
79 rset_isamb_parms *pt = (rset_isamb_parms *) parms;
80 struct rset_isamb_info *info;
82 ct->flags |= RSET_FLAG_VOLATILE;
83 info = (struct rset_isamb_info *) xmalloc (sizeof(*info));
86 info->key_size = pt->key_size;
88 info->ispt_list = NULL;
92 RSFD r_open (RSET ct, int flag)
94 struct rset_isamb_info *info = (struct rset_isamb_info *) ct->buf;
95 struct rset_pp_info *ptinfo;
97 logf (LOG_DEBUG, "risamb_open");
98 if (flag & RSETF_WRITE)
100 logf (LOG_FATAL, "ISAMB set type is read-only");
103 ptinfo = (struct rset_pp_info *) xmalloc (sizeof(*ptinfo));
104 ptinfo->next = info->ispt_list;
105 info->ispt_list = ptinfo;
106 ptinfo->pt = isamb_pp_open (info->is, info->pos);
108 ptinfo->buf = xmalloc (info->key_size);
112 static void r_close (RSFD rfd)
114 struct rset_isamb_info *info = ((struct rset_pp_info*) rfd)->info;
115 struct rset_pp_info **ptinfop;
117 for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
120 xfree ((*ptinfop)->buf);
121 isamb_pp_close ((*ptinfop)->pt);
122 *ptinfop = (*ptinfop)->next;
126 logf (LOG_FATAL, "r_close but no rfd match!");
130 static void r_delete (RSET ct)
132 struct rset_isamb_info *info = (struct rset_isamb_info *) ct->buf;
134 logf (LOG_DEBUG, "rsisamb_delete");
135 assert (info->ispt_list == NULL);
139 static void r_rewind (RSFD rfd)
141 logf (LOG_DEBUG, "rsisamb_rewind");
145 static int r_forward(RSET ct, RSFD rfd, void *buf,
146 int (*cmpfunc)(const void *p1, const void *p2),
147 const void *untilbuf)
150 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
152 logf (LOG_DEBUG, "rset_rsisamb_forward starting '%s' (ct=%p rfd=%p)",
153 ct->control->desc, ct,rfd);
154 key_logdump(LOG_DEBUG, untilbuf);
155 key_logdump(LOG_DEBUG, buf);
158 i=isamb_pp_forward(pinfo->pt, buf, untilbuf);
160 logf (LOG_DEBUG, "rset_rsisamb_forward returning %d",i);
165 static void r_pos (RSFD rfd, double *current, double *total)
167 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
169 isamb_pp_pos(pinfo->pt, current, total);
171 logf(LOG_DEBUG,"isamb.r_pos returning %0.1f/%0.1f",
176 static int r_read (RSFD rfd, void *buf)
178 struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
181 r = isamb_pp_read(pinfo->pt, buf);
185 static int r_write (RSFD rfd, const void *buf)
187 logf (LOG_FATAL, "ISAMB set type is read-only");