X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=index%2Flimit.c;h=f431cfb914f35e3e9ee5d0bebc759972b0e9bfe2;hb=553ce0f9320b097b962ddd961989f5c8ad7fcf9f;hp=047a07a4d66a2e2e6a4430fd53e4d44a5b41be04;hpb=0e898c0c6183c6dd9701286f6a4ac9b734c9bdbb;p=idzebra-moved-to-github.git

diff --git a/index/limit.c b/index/limit.c
index 047a07a..f431cfb 100644
--- a/index/limit.c
+++ b/index/limit.c
@@ -1,4 +1,4 @@
-/* $Id: limit.c,v 1.1 2005-05-03 09:11:34 adam Exp $
+/* $Id: limit.c,v 1.7 2006-05-10 08:13:22 adam Exp $
    Copyright (C) 1995-2005
    Index Data ApS
 
@@ -27,8 +27,10 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include <yaz/diagbib1.h>
 #include "index.h"
 
+#define ZEBRA_LIMIT_DEBUG 0
+
 struct zebra_limit {
-    int exclude_flag;
+    int complement_flag;
     zint *ids;
 };
 
@@ -41,18 +43,18 @@ void zebra_limit_destroy(struct zebra_limit *zl)
     }
 }
 
-struct zebra_limit *zebra_limit_create(int exclude_flag, zint *ids)
+struct zebra_limit *zebra_limit_create(int complement_flag, zint *ids)
 {
     struct zebra_limit *zl = 0;
     size_t i;
-    for (i = 0; ids && ids[i]; i++)
-	;
-    if (i)
+    if (ids)
     {
+	for (i = 0; ids[i]; i++)
+	    ;
 	zl = xmalloc(sizeof(*zl));
 	zl->ids = xmalloc((i+1) * sizeof(*ids));
 	memcpy(zl->ids, ids, (i+1) * sizeof(*ids));
-	zl->exclude_flag = exclude_flag;
+	zl->complement_flag = complement_flag;
     }
     return zl;
 }
@@ -63,12 +65,29 @@ static int zebra_limit_filter_cb(const void *buf, void *data)
     const struct it_key *key = buf;
     size_t i;
 
+#if ZEBRA_LIMIT_DEBUG
+    yaz_log(YLOG_LOG, "zebra_limit_filter_cb zl=%p key->len=%d", zl, key->len);
+#endif
     if (key->len != 3)
 	return 1;
     for (i = 0; zl->ids[i]; i++)
+    {
+#if ZEBRA_LIMIT_DEBUG
+	yaz_log(YLOG_LOG, " i=%d ids=" ZINT_FORMAT " mem=" ZINT_FORMAT,
+		i, zl->ids[i], key->mem[1]);
+#endif
 	if (zl->ids[i] == key->mem[1])
-	    return zl->exclude_flag ? 0 : 1;
-    return zl->exclude_flag ? 1 : 0;
+	{
+#if ZEBRA_LIMIT_DEBUG
+	    yaz_log(YLOG_LOG, " match. Ret=%d", zl->complement_flag ? 0:1);
+#endif
+	    return zl->complement_flag ? 0 : 1;
+	}
+    }
+#if ZEBRA_LIMIT_DEBUG
+    yaz_log(YLOG_LOG, " no match. Ret=%d", zl->complement_flag ? 1:0);
+#endif
+    return zl->complement_flag ? 1 : 0;
 }
 
 static void zebra_limit_destroy_cb(void *data)
@@ -81,11 +100,17 @@ void zebra_limit_for_rset(struct zebra_limit *zl,
 			  void (**filter_destroy)(void *data),
 			  void **filter_data)
 {
+#if ZEBRA_LIMIT_DEBUG
+    yaz_log(YLOG_LOG, "zebra_limit_for_rset debug enabled zl=%p", zl);
+#endif
     if (zl && zl->ids)
     {
 	struct zebra_limit *hl;
 
-	hl = zebra_limit_create(zl->exclude_flag, zl->ids);
+#if ZEBRA_LIMIT_DEBUG
+	yaz_log(YLOG_LOG, "enable limit");
+#endif
+	hl = zebra_limit_create(zl->complement_flag, zl->ids);
 	*filter_data = hl;
 	*filter_func = zebra_limit_filter_cb;
 	*filter_destroy = zebra_limit_destroy_cb;
@@ -98,3 +123,11 @@ void zebra_limit_for_rset(struct zebra_limit *zl,
     }
 }
 			  
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+