Implemented rset_dup.

[idzebra-moved-to-github.git] / rset / rset.c

diff --git a/rset/rset.c b/rset/rset.c
index 2b5e57f..e0d1d80 100644 (file)
--- a/rset/rset.c
+++ b/rset/rset.c
@@ -1,10 +1,38 @@
 /*
- * Copyright (C) 1994, Index Data I/S 
+ * Copyright (C) 1994-1998, Index Data I/S 
  * All rights reserved.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: rset.c,v $
- * Revision 1.3  1995-09-04 15:20:39  adam
+ * Revision 1.10  1998-02-10 11:56:46  adam
+ * Implemented rset_dup.
+ *
+ * Revision 1.9  1996/10/29 13:55:21  adam
+ * Include of zebrautl.h instead of alexutil.h.
+ *
+ * Revision 1.8  1995/12/11 09:15:23  adam
+ * New set types: sand/sor/snot - ranked versions of and/or/not in
+ * ranked/semi-ranked result sets.
+ * Note: the snot not finished yet.
+ * New rset member: flag.
+ * Bug fix: r_delete in rsrel.c did free bad memory block.
+ *
+ * Revision 1.7  1995/10/12  12:41:56  adam
+ * Private info (buf) moved from struct rset_control to struct rset.
+ * Bug fixes in relevance.
+ *
+ * Revision 1.6  1995/09/08  14:52:41  adam
+ * Work on relevance feedback.
+ *
+ * Revision 1.5  1995/09/07  13:58:43  adam
+ * New parameter: result-set file descriptor (RSFD) to support multiple
+ * positions within the same result-set.
+ * Boolean operators: and, or, not implemented.
+ *
+ * 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
@@ -16,23 +44,33 @@
  */
 
 #include <stdio.h>
-#include <alexutil.h>
+#include <zebrautl.h>
 
 #include <rset.h>
 
 RSET rset_create(const rset_control *sel, void *parms)
 {
-    RSET new;
+    RSET rnew;
 
-    new = xmalloc(sizeof(*new));     /* make dynamic alloc scheme */
-    if (!(new->control = (*sel->f_create)(sel, parms)))
-       return 0;
-    return new;
+    logf (LOG_DEBUG, "rs_create(%s)", sel->desc);
+    rnew = xmalloc(sizeof(*rnew));
+    rnew->control = sel;
+    rnew->flags = 0;
+    rnew->count = 1;
+    rnew->buf = (*sel->f_create)(sel, parms, &rnew->flags);
+    return rnew;
 }
 
-void rset_delete(RSET rs)
+void rset_delete (RSET rs)
 {
-    rset_close(rs);
-    (*rs->control->f_delete)(rs->control);
+    (rs->count)--;
+    if (!rs->count)
+       (*rs->control->f_delete)(rs);
     xfree(rs);
 }
+
+RSET rset_dup (RSET rs)
+{
+    (rs->count)++;
+    return rs;
+}