2 * Copyright (C) 1994-1996, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.17 1996-06-04 10:18:58 adam
8 * Minor changes - removed include of ctype.h.
10 * Revision 1.16 1996/05/13 14:23:05 adam
11 * Work on compaction of set/use bytes in dictionary.
13 * Revision 1.15 1995/11/20 16:59:46 adam
14 * New update method: the 'old' keys are saved for each records.
16 * Revision 1.14 1995/10/30 15:08:08 adam
19 * Revision 1.13 1995/10/27 14:00:11 adam
20 * Implemented detection of database availability.
22 * Revision 1.12 1995/10/17 18:02:08 adam
23 * New feature: databases. Implemented as prefix to words in dictionary.
25 * Revision 1.11 1995/10/06 16:33:37 adam
26 * Use attribute mappings.
28 * Revision 1.10 1995/09/29 14:01:41 adam
31 * Revision 1.9 1995/09/28 12:10:32 adam
32 * Bug fixes. Field prefix used in queries.
34 * Revision 1.8 1995/09/28 09:19:42 adam
35 * xfree/xmalloc used everywhere.
36 * Extract/retrieve method seems to work for text records.
38 * Revision 1.7 1995/09/27 12:22:28 adam
39 * More work on extract in record control.
40 * Field name is not in isam keys but in prefix in dictionary words.
42 * Revision 1.6 1995/09/14 07:48:23 adam
43 * Record control management.
45 * Revision 1.5 1995/09/11 13:09:34 adam
46 * More work on relevance feedback.
48 * Revision 1.4 1995/09/08 14:52:27 adam
49 * Minor changes. Dictionary is lower case now.
51 * Revision 1.3 1995/09/07 13:58:36 adam
52 * New parameter: result-set file descriptor (RSFD) to support multiple
53 * positions within the same result-set.
54 * Boolean operators: and, or, not implemented.
55 * Result-set references.
57 * Revision 1.2 1995/09/06 16:11:17 adam
58 * Option: only one word key per file.
60 * Revision 1.1 1995/09/04 09:10:36 adam
61 * More work on index add/del/update.
62 * Merge sort implemented.
63 * Initial work on z39 server.
74 void key_logdump (int logmask, const void *p)
78 memcpy (&key, p, sizeof(key));
79 logf (logmask, "%7d s=%-4d", key.sysno, key.seqno);
82 int key_compare (const void *p1, const void *p2)
85 memcpy (&i1, p1, sizeof(i1));
86 memcpy (&i2, p2, sizeof(i2));
87 if (i1.sysno != i2.sysno)
89 if (i1.sysno > i2.sysno)
95 if (i1.seqno != i2.seqno)
97 if (i1.seqno > i2.seqno)
103 if (i1.freq != i2.freq)
105 if (i1.freq > i2.freq)
114 int key_qsort_compare (const void *p1, const void *p2)
118 char *cp1 = *(char **) p1;
119 char *cp2 = *(char **) p2;
121 if ((r = strcmp (cp1, cp2)))
124 if ((r = key_compare (cp1+l+1, cp2+l+1)))
126 return cp1[l] - cp2[l];