X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=rset%2Frset.c;h=254ee0877d285630171df7e91aa7aeba1287868f;hp=0a2f92a0d233e4ed75fae52df45a32fcb3e437ad;hb=3335cd5f7e7af06ac6ed943859c473e092d559a1;hpb=42b0747acfaaf94e94fd6c20b4cd97e10ded0ae0

diff --git a/rset/rset.c b/rset/rset.c
index 0a2f92a..254ee08 100644
--- a/rset/rset.c
+++ b/rset/rset.c
@@ -1,41 +1,153 @@
-/*
- * Copyright (C) 1994-1995, Index Data I/S 
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: rset.c,v $
- * Revision 1.4  1995-09-06 16:11:56  adam
- * More work on boolean sets.
- *
- * Revision 1.3  1995/09/04  15:20:39  adam
- * More work on temp sets. is_open member removed.
- *
- * Revision 1.2  1995/09/04  12:33:56  adam
- * Various cleanup. YAZ util used instead.
- *
- * Revision 1.1  1994/11/04  13:21:28  quinn
- * Working.
- *
- */
+/* $Id: rset.c,v 1.24 2004-08-19 12:49:15 heikki Exp $
+   Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
+   Index Data Aps
+
+This file is part of the Zebra server.
+
+Zebra is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Zebra; see the file LICENSE.zebra.  If not, write to the
+Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+*/
+
+
 
 #include <stdio.h>
-#include <alexutil.h>
+#include <string.h>
+#include <zebrautl.h>
+#include <assert.h>
 
 #include <rset.h>
+#include <../index/index.h> /* for log_keydump. Debugging only */
+
+RSET rset_create(const struct rset_control *sel, void *parms)
+{
+    RSET rnew;
+    int i;
+
+    logf (LOG_DEBUG, "rs_create(%s)", sel->desc);
+    rnew = (RSET) xmalloc(sizeof(*rnew));
+    rnew->control = sel;
+    rnew->flags = 0;
+    rnew->count = 1;
+    rnew->rset_terms = NULL;
+    rnew->no_rset_terms = 0;
+    rnew->buf = (*sel->f_create)(rnew, sel, parms);
+    logf (LOG_DEBUG, "no_rset_terms: %d", rnew->no_rset_terms);
+    for (i = 0; i<rnew->no_rset_terms; i++)
+	logf (LOG_DEBUG, " %s", rnew->rset_terms[i]->name);
+    return rnew;
+}
+
+void rset_delete (RSET rs)
+{
+    (rs->count)--;
+    if (!rs->count)
+    {
+	(*rs->control->f_delete)(rs);
+	xfree(rs);
+    }
+}
 
-RSET rset_create(const rset_control *sel, void *parms)
+RSET rset_dup (RSET rs)
 {
-    RSET new;
+    (rs->count)++;
+    return rs;
+}
+
+void rset_default_pos (RSFD rfd, double *current, double *total)
+{ /* This should never really be needed, but it is still used in */
+  /* those rsets that we don't really plan to use, like isam-s */
+    assert(rfd);
+    assert(current);
+    assert(total);
+    *current=-1; /* signal that pos is not implemented */
+    *total=-1;
+} /* rset_default_pos */
+
+int rset_default_forward(RSET ct, RSFD rfd, void *buf, int *term_index, 
+                           int (*cmpfunc)(const void *p1, const void *p2), 
+                           const void *untilbuf)
+{
+    int more=1;
+    int cmp=2;
+    logf (LOG_DEBUG, "rset_default_forward starting '%s' (ct=%p rfd=%p)",
+                    ct->control->desc, ct,rfd);
+    key_logdump(LOG_DEBUG, untilbuf);
+    while ( (cmp==2) && (more))
+    {
+        logf (LOG_DEBUG, "rset_default_forward looping m=%d c=%d",more,cmp);
+        more=rset_read(ct, rfd, buf, term_index);
+        if (more)
+            cmp=(*cmpfunc)(untilbuf,buf);
+        if (more)
+            key_logdump(LOG_DEBUG,buf);
+    }
+    logf (LOG_DEBUG, "rset_default_forward exiting m=%d c=%d",more,cmp);
 
-    new = xmalloc(sizeof(*new));     /* make dynamic alloc scheme */
-    if (!(new->control = (*sel->f_create)(sel, parms)))
-    	return 0;
-    return new;
+    return more;
+}
+
+RSET_TERM *rset_terms(RSET rs, int *no)
+{
+    *no = rs->no_rset_terms;
+    return rs->rset_terms;
+}
+
+RSET_TERM rset_term_create (const char *name, int length, const char *flags,
+                            int type)
+{
+    RSET_TERM t = (RSET_TERM) xmalloc (sizeof(*t));
+    if (!name)
+	t->name = NULL;
+    else if (length == -1)
+	t->name = xstrdup (name);
+    else
+    {
+	t->name = (char*) xmalloc (length+1);
+	memcpy (t->name, name, length);
+	t->name[length] = '\0';
+    }
+    if (!flags)
+	t->flags = NULL;
+    else
+	t->flags = xstrdup (flags);
+    t->nn = -1;
+    t->count = 0;
+    t->type = type;
+    return t;
+}
+
+void rset_term_destroy (RSET_TERM t)
+{
+    if (t) { /* rsmultior uses things without terms at all ! */
+        xfree (t->name);
+        xfree (t->flags);
+        xfree (t);
+    }
 }
 
-void rset_delete(RSET rs)
+RSET_TERM rset_term_dup (RSET_TERM t)
 {
-    rset_close(rs);
-    (*rs->control->f_delete)(rs->control);
-    xfree(rs);
+    RSET_TERM nt = (RSET_TERM) xmalloc (sizeof(*nt));
+    if (t->name)
+	nt->name = xstrdup (t->name);
+    else
+	nt->name = NULL;
+    if (t->flags)
+	nt->flags = xstrdup (t->flags);
+    else
+	nt->flags = NULL;
+    nt->nn = t->nn;
+    return nt;
 }