/*
- * 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 1.5 1995-09-11 13:09:34 adam
+ * More work on relevance feedback.
+ *
+ * Revision 1.4 1995/09/08 14:52:27 adam
+ * Minor changes. Dictionary is lower case now.
+ *
+ * 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.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
+#include <ctype.h>
#include <assert.h>
#include "index.h"
+void key_logdump (int logmask, const void *p)
+{
+ struct it_key key;
+
+ memcpy (&key, p, sizeof(key));
+#if IT_KEY_HAVE_SEQNO
+ logf (logmask, "%7d s=%-3d", key.sysno, key.seqno);
+#else
+ logf (logmask, "%7d f=%-3d", key.sysno, key.freq);
+#endif
+}
+
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 IT_KEY_HAVE_SEQNO
+ if (i1.seqno != i2.seqno)
+ {
+ if (i1.seqno > i2.seqno)
+ return 1;
+ else
+ return -1;
+ }
+#else
+ if (i1.freq != i2.freq)
+ {
+ if (i1.freq > i2.freq)
+ return 1;
+ else
+ return -1;
+ }
+#endif
+#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)
+int index_char_cvt (int c)
{
- 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;
+ return tolower (c);
}
-