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[idzebra-moved-to-github.git] / index / kcompare.c

diff --git a/index/kcompare.c b/index/kcompare.c
index 5217ed9..fa407ec 100644 (file)
--- a/index/kcompare.c
+++ b/index/kcompare.c
@@ -1,10 +1,19 @@
 /*
- * Copyright (C) 1995, Index Data I/S 
+ * Copyright (C) 1994-1995, Index Data I/S 
  * All rights reserved.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: kcompare.c,v $
- * Revision 1.1  1995-09-04 09:10:36  adam
+ * Revision 1.3  1995-09-07 13:58:36  adam
+ * New parameter: result-set file descriptor (RSFD) to support multiple
+ * positions within the same result-set.
+ * Boolean operators: and, or, not implemented.
+ * Result-set references.
+ *
+ * Revision 1.2  1995/09/06  16:11:17  adam
+ * Option: only one word key per file.
+ *
+ * Revision 1.1  1995/09/04  09:10:36  adam
  * More work on index add/del/update.
  * Merge sort implemented.
  * Initial work on z39 server.
@@ -23,19 +32,42 @@ int key_compare (const void *p1, const void *p2)
     struct it_key i1, i2;
     memcpy (&i1, p1, sizeof(i1));
     memcpy (&i2, p2, sizeof(i2));
-    if ( i1.sysno != i2.sysno)
-        return i1.sysno - i2.sysno;
-    if ( i1.seqno != i2.seqno)
-        return i1.seqno - i2.seqno;
-    return i1.field - i2.field;
+    if (i1.sysno != i2.sysno)
+    {
+        if (i1.sysno > i2.sysno)
+            return 2;
+        else
+            return -2;
+    }
+    if (i1.seqno != i2.seqno)
+    {
+        if (i1.seqno > i2.seqno)
+            return 1;
+        else
+            return -1;
+    }
+#if IT_KEY_HAVE_FIELD
+    if (i1.field != i2.field)
+    {
+        if (i1.field > i2.field)
+            return 1;
+        else
+            return -1;
+    }
+#endif
+    return 0;
 }
 
 int key_compare_x (const struct it_key *i1, const struct it_key *i2)
 {
     if ( i1->sysno != i2->sysno)
         return i1->sysno - i2->sysno;
+#if IT_KEY_HAVE_FIELD
     if ( i1->seqno != i2->seqno)
         return i1->seqno - i2->seqno;
     return i1->field - i2->field;
+#else
+    return i1->seqno - i2->seqno;
+#endif
 }