X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=index%2Fzvrank.c;h=4c1c4b77a56b878ddb8a1fe35678f87e39b6d4c0;hb=3e09835371a4b88df2a4b0ab155abb01cf285a81;hp=45ebee2c4be8e9cc8b4595b647a023710136a836;hpb=18bdfd28a9f4d38e2f81556396f51821c3d71088;p=idzebra-moved-to-github.git

diff --git a/index/zvrank.c b/index/zvrank.c
index 45ebee2..4c1c4b7 100644
--- a/index/zvrank.c
+++ b/index/zvrank.c
@@ -1,4 +1,4 @@
-/* $Id: zvrank.c,v 1.5 2003-05-20 09:43:46 adam Exp $
+/* $Id: zvrank.c,v 1.7 2004-06-13 18:44:57 adam Exp $
    Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003
    Index Data Aps
 
@@ -20,6 +20,13 @@
    02111-1307, USA.
 */
 
+/*
+Zvrank: an experimental ranking algorithm. See doc/zvrank.txt and
+source in index/zvrank.c. Enable this by using rank: zvrank in zebra.cfg.
+Contributed by Johannes Leveling <Johannes.Leveling at
+fernuni-hagen.de>
+*/
+
 /* Zebra Vector Space Model RANKing 
 **
 ** six (seven) letter identifier for weighting scheme
@@ -653,9 +660,10 @@ static void *zv_create (ZebraHandle zh) {
     struct rank_class_info *ci = (struct rank_class_info *)
         xmalloc (sizeof(*ci));
     yaz_log(LOG_DEBUG, "zv_create");
-    wscheme=res_get(res, "zvrank.weighting-scheme");
-    for (i=0; (i < strlen(wscheme)) && (i < 8); i++) 
+    wscheme=res_get_def(res, "zvrank.weighting-scheme", "");
+    for (i=0; wscheme[i] && i < 8; i++) 
         ci->rscheme[i]=wscheme[i];
+    ci->rscheme[i] = '\0';
     return ci;
 }