2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.13 1995-10-27 14:00:11 adam
8 * Implemented detection of database availability.
10 * Revision 1.12 1995/10/17 18:02:08 adam
11 * New feature: databases. Implemented as prefix to words in dictionary.
13 * Revision 1.11 1995/10/06 16:33:37 adam
14 * Use attribute mappings.
16 * Revision 1.10 1995/09/29 14:01:41 adam
19 * Revision 1.9 1995/09/28 12:10:32 adam
20 * Bug fixes. Field prefix used in queries.
22 * Revision 1.8 1995/09/28 09:19:42 adam
23 * xfree/xmalloc used everywhere.
24 * Extract/retrieve method seems to work for text records.
26 * Revision 1.7 1995/09/27 12:22:28 adam
27 * More work on extract in record control.
28 * Field name is not in isam keys but in prefix in dictionary words.
30 * Revision 1.6 1995/09/14 07:48:23 adam
31 * Record control management.
33 * Revision 1.5 1995/09/11 13:09:34 adam
34 * More work on relevance feedback.
36 * Revision 1.4 1995/09/08 14:52:27 adam
37 * Minor changes. Dictionary is lower case now.
39 * Revision 1.3 1995/09/07 13:58:36 adam
40 * New parameter: result-set file descriptor (RSFD) to support multiple
41 * positions within the same result-set.
42 * Boolean operators: and, or, not implemented.
43 * Result-set references.
45 * Revision 1.2 1995/09/06 16:11:17 adam
46 * Option: only one word key per file.
48 * Revision 1.1 1995/09/04 09:10:36 adam
49 * More work on index add/del/update.
50 * Merge sort implemented.
51 * Initial work on z39 server.
63 void key_logdump (int logmask, const void *p)
67 memcpy (&key, p, sizeof(key));
68 logf (logmask, "%7d s=%-4d", key.sysno, key.seqno);
71 int key_compare (const void *p1, const void *p2)
73 const struct it_key *i1 = p1, *i2 = p2;
74 if (i1->sysno != i2->sysno)
76 if (i1->sysno > i2->sysno)
82 if (i1->seqno != i2->seqno)
84 if (i1->seqno > i2->seqno)
90 if (i1->freq != i2->freq)
92 if (i1->freq > i2->freq)
101 int key_qsort_compare (const void *p1, const void *p2)
105 char *cp1 = *(char **) p1;
106 char *cp2 = *(char **) p2;
108 if ((r = strcmp (cp1, cp2)))
111 if ((r = key_compare (cp1+l+1, cp2+l+1)))
113 return cp1[l] - cp2[l];
116 int index_char_cvt (int c)
121 int index_word_prefix (char *string, int attset_ordinal,
126 sprintf (string, "%s@%c%04d", databaseName,
127 attset_ordinal + '0', local_attribute);
128 for (i = 0; string[i]; i++)
129 string[i] = index_char_cvt (string[i]);