-/* $Id: rsbool.c,v 1.23 2004-01-16 15:27:35 heikki Exp $
+/* $Id: rsbool.c,v 1.25 2004-02-12 15:15:54 heikki Exp $
Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003
Index Data Aps
#include <rsbool.h>
#include <zebrautl.h>
+#include <../index/index.h> /* for log_keydump. Debugging only */
+
+
static void *r_create(RSET ct, const struct rset_control *sel, void *parms);
static RSFD r_open (RSET ct, int flag);
static void r_close (RSFD rfd);
static void r_delete (RSET ct);
static void r_rewind (RSFD rfd);
+static int r_forward(RSET ct, RSFD rfd, void *buf, int *term_index,
+ int (*cmpfunc)(const void *p1, const void *p2),
+ const void *untilbuf);
static int r_count (RSET ct);
static int r_read_and (RSFD rfd, void *buf, int *term_index);
static int r_read_or (RSFD rfd, void *buf, int *term_index);
r_close,
r_delete,
r_rewind,
- rset_default_forward,
+ r_forward, /* rset_default_forward, */
r_count,
r_read_and,
r_write,
r_close,
r_delete,
r_rewind,
+#if 1
+ r_forward,
+#else
rset_default_forward,
+#endif
r_count,
r_read_or,
r_write,
r_close,
r_delete,
r_rewind,
- rset_default_forward,
+ r_forward,
r_count,
r_read_not,
r_write,
return NULL;
}
rfd = (struct rset_bool_rfd *) xmalloc (sizeof(*rfd));
+ logf(LOG_DEBUG,"rsbool (%s) open [%p]", ct->control->desc, rfd);
rfd->next = info->rfd_list;
info->rfd_list = rfd;
rfd->info = info;
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r, &p->term_index_r);
}
+static int r_forward (RSET ct, RSFD rfd, void *buf, int *term_index,
+ int (*cmpfunc)(const void *p1, const void *p2),
+ const void *untilbuf)
+{
+ struct rset_bool_info *info = ((struct rset_bool_rfd*)rfd)->info;
+ struct rset_bool_rfd *p = (struct rset_bool_rfd *) rfd;
+ int cmp=0;
+ int rc;
+
+ logf (LOG_DEBUG, "rsbool_forward (L) [%p] '%s' (ct=%p rfd=%p m=%d,%d)",
+ rfd, ct->control->desc, ct, rfd, p->more_l, p->more_r);
+ if ( p->more_l && ((cmpfunc)(untilbuf,p->buf_l)==2) )
+ p->more_l = rset_forward(info->rset_l, p->rfd_l, p->buf_l,
+ &p->term_index_l, info->cmp, untilbuf);
+
+ logf (LOG_DEBUG, "rsbool_forward (R) [%p] '%s' (ct=%p rfd=%p m=%d,%d)",
+ rfd, ct->control->desc, ct, rfd, p->more_l, p->more_r);
+ if ( p->more_r && ((cmpfunc)(untilbuf,p->buf_r)==2))
+ p->more_r = rset_forward(info->rset_r, p->rfd_r, p->buf_r,
+ &p->term_index_r, info->cmp, untilbuf);
+
+ logf (LOG_DEBUG, "rsbool_forward [%p] calling read, m=%d,%d t=%d",
+ rfd, p->more_l, p->more_r, p->tail);
+
+ p->tail=0;
+ rc = rset_read(ct,rfd,buf,term_index);
+ logf (LOG_DEBUG, "rsbool_forward returning [%p] %d m=%d,%d",
+ rfd, rc, p->more_l, p->more_r);
+ return rc;
+
+ if (p->more_l && p->more_r)
+ cmp = (*info->cmp)(p->buf_l, p->buf_r);
+ else if (p->more_l)
+ cmp = -2;
+ else
+ cmp = 2;
+ if ( (cmp<0) && (p->more_l) )
+ {
+ memcpy (buf, p->buf_l, info->key_size);
+ *term_index = p->term_index_l;
+ logf (LOG_DEBUG, "rsbool_forward returning L (cmp=%d)",cmp);
+ return 1;
+ } else if ( (cmp>0) && (p->more_r) )
+ {
+ memcpy (buf, p->buf_r, info->key_size);
+ *term_index = p->term_index_r + info->term_index_s;
+ logf (LOG_DEBUG, "rsbool_forward returning R (cmp=%d)",cmp);
+ return 1;
+ }
+ /* return ( p->more_l || p->more_r); */
+ return 0;
+}
+
static int r_count (RSET ct)
{
return 0;
cmp = -2;
else
cmp = 2;
+ logf (LOG_DEBUG, "r_read_and [%p] looping: m=%d/%d c=%d t=%d",
+ rfd, p->more_l, p->more_r, cmp, p->tail);
+ key_logdump(LOG_DEBUG,p->buf_l);
+ key_logdump(LOG_DEBUG,p->buf_r);
if (!cmp)
{
memcpy (buf, p->buf_l, info->key_size);
- *term_index = p->term_index_l;
+ *term_index = p->term_index_l;
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
&p->term_index_l);
p->tail = 1;
else if (cmp == 1)
{
memcpy (buf, p->buf_r, info->key_size);
- *term_index = p->term_index_r + info->term_index_s;
+ *term_index = p->term_index_r + info->term_index_s;
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r,
&p->term_index_r);
p->tail = 1;
+ logf (LOG_DEBUG, "r_read_and [%p] returning R m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
return 1;
}
else if (cmp == -1)
{
memcpy (buf, p->buf_l, info->key_size);
- *term_index = p->term_index_l;
+ *term_index = p->term_index_l;
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
&p->term_index_l);
p->tail = 1;
+ logf (LOG_DEBUG, "r_read_and [%p] returning L m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
return 1;
}
- else if (cmp > 1)
+ else if (cmp > 1) /* cmp == 2 */
{
+#define OLDCODE 0
+#if OLDCODE
memcpy (buf, p->buf_r, info->key_size);
*term_index = p->term_index_r + info->term_index_s;
{
if (!p->more_r || (*info->cmp)(p->buf_r, buf) > 1)
p->tail = 0;
+ logf (LOG_DEBUG, "r_read_and returning C m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
+ return 1;
+ }
+#else
+
+ if (p->tail)
+ {
+ memcpy (buf, p->buf_r, info->key_size);
+ *term_index = p->term_index_r + info->term_index_s;
+ p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r,
+ &p->term_index_r);
+ if (!p->more_r || (*info->cmp)(p->buf_r, buf) > 1)
+ p->tail = 0;
+ logf (LOG_DEBUG, "r_read_and [%p] returning R tail m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
return 1;
+ } else
+ {
+ logf (LOG_DEBUG, "r_read_and [%p] about to forward R m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ if (p->more_r && p->more_l)
+ p->more_r = rset_forward(
+ info->rset_r, p->rfd_r,
+ p->buf_r, &p->term_index_r,
+ (info->cmp), p->buf_l);
+ else
+ return 0; /* no point in reading further */
}
+#endif
}
- else
+ else /* cmp == -2 */
{
- memcpy (buf, p->buf_l, info->key_size);
- *term_index = p->term_index_l;
- p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
- &p->term_index_l);
+#if OLDCODE
+ memcpy (buf, p->buf_l, info->key_size);
+ *term_index = p->term_index_l;
+ p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
+ &p->term_index_l);
+ if (p->tail)
+ {
+ if (!p->more_l || (*info->cmp)(p->buf_l, buf) > 1)
+ p->tail = 0;
+ logf (LOG_DEBUG, "r_read_and [%p] returning R tail m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
+ return 1;
+ }
+#else
if (p->tail)
{
+ memcpy (buf, p->buf_l, info->key_size);
+ *term_index = p->term_index_l;
+ p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
+ &p->term_index_l);
if (!p->more_l || (*info->cmp)(p->buf_l, buf) > 1)
p->tail = 0;
+ logf (LOG_DEBUG, "r_read_and [%p] returning L tail m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
return 1;
}
+ else
+ {
+ logf (LOG_DEBUG, "r_read_and [%p] about to forward L m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ if (p->more_r && p->more_l)
+ p->more_l = rset_forward(
+ /* p->more_l = rset_default_forward( */
+ info->rset_l, p->rfd_l,
+ p->buf_l, &p->term_index_l,
+ (info->cmp), p->buf_r);
+ else
+ return 0; /* no point in reading further */
+ }
+#endif
}
}
+ logf (LOG_DEBUG, "r_read_and [%p] reached its end",rfd);
return 0;
}
if (!cmp)
{
memcpy (buf, p->buf_l, info->key_size);
- *term_index = p->term_index_l;
+ *term_index = p->term_index_l;
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
&p->term_index_l);
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r,
&p->term_index_r);
+ logf (LOG_DEBUG, "r_read_or returning A m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
return 1;
}
else if (cmp > 0)
{
memcpy (buf, p->buf_r, info->key_size);
- *term_index = p->term_index_r + info->term_index_s;
+ *term_index = p->term_index_r + info->term_index_s;
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r,
&p->term_index_r);
+ logf (LOG_DEBUG, "r_read_or returning B m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
return 1;
}
else
{
memcpy (buf, p->buf_l, info->key_size);
- *term_index = p->term_index_l;
+ *term_index = p->term_index_l;
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
&p->term_index_l);
+ logf (LOG_DEBUG, "r_read_or returning C m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
return 1;
}
}
if (cmp < -1)
{
memcpy (buf, p->buf_l, info->key_size);
- *term_index = p->term_index_l;
+ *term_index = p->term_index_l;
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
&p->term_index_l);
return 1;
}
else if (cmp > 1)
+#if 0
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r,
&p->term_index_r);
+#else
+ p->more_r = rset_forward(
+ info->rset_r, p->rfd_r,
+ p->buf_r, &p->term_index_r,
+ (info->cmp), p->buf_l);
+#endif
else
{
memcpy (buf, p->buf_l, info->key_size);
do
- {
+ {
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l,
&p->term_index_l);
if (!p->more_l)