2 * Copyright (C) 1994-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.7 1999-07-06 12:28:04 adam
8 * Updated record index structure. Format includes version ID. Compression
9 * algorithm ID is stored for each record block.
11 * Revision 1.6 1999/05/26 07:49:13 adam
14 * Revision 1.5 1999/02/02 14:51:05 adam
15 * Updated WIN32 code specific sections. Changed header.
17 * Revision 1.4 1998/03/05 08:45:12 adam
18 * New result set model and modular ranking system. Moved towards
19 * descent server API. System information stored as "SGML" records.
21 * Revision 1.3 1995/12/11 11:45:55 adam
22 * Removed commented code.
24 * Revision 1.2 1995/12/11 09:12:51 adam
25 * The rec_get function returns NULL if record doesn't exist - will
26 * happen in the server if the result set records have been deleted since
27 * the creation of the set (i.e. the search).
28 * The server saves a result temporarily if it is 'volatile', i.e. the
29 * set is register dependent.
31 * Revision 1.1 1995/12/06 12:41:25 adam
32 * New command 'stat' for the index program.
33 * Filenames can be read from stdin by specifying '-'.
34 * Bug fix/enhancement of the transformation from terms to regular
35 * expressons in the search engine.
47 #define REC_BLOCK_TYPES 2
48 #define REC_HEAD_MAGIC "recindex"
53 int compression_method;
58 char *data_fname[REC_BLOCK_TYPES];
59 BFile data_BFile[REC_BLOCK_TYPES];
64 struct record_cache_entry *record_cache;
72 int block_size[REC_BLOCK_TYPES];
73 int block_free[REC_BLOCK_TYPES];
74 int block_last[REC_BLOCK_TYPES];
75 int block_used[REC_BLOCK_TYPES];
76 int block_move[REC_BLOCK_TYPES];
86 enum recordCacheFlag { recordFlagNop, recordFlagWrite, recordFlagNew,
89 struct record_cache_entry {
91 enum recordCacheFlag flag;
94 struct record_index_entry {
95 int next; /* first block of record info / next free entry */
96 int size; /* size of record or 0 if free entry */