2 * Copyright (C) 1994-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.17 2000-12-05 09:59:10 adam
8 * Work on dict_delete_subtree.
10 * Revision 1.16 1999/05/26 07:49:13 adam
13 * Revision 1.15 1999/05/15 14:36:37 adam
14 * Updated dictionary. Implemented "compression" of dictionary.
16 * Revision 1.14 1999/03/09 13:07:06 adam
17 * Work on dict_compact routine.
19 * Revision 1.13 1999/02/02 14:50:27 adam
20 * Updated WIN32 code specific sections. Changed header.
22 * Revision 1.12 1997/09/17 12:19:07 adam
23 * Zebra version corresponds to YAZ version 1.4.
24 * Changed Zebra server so that it doesn't depend on global common_resource.
26 * Revision 1.11 1996/10/29 14:00:05 adam
27 * Page size given by DICT_DEFAULT_PAGESIZE in dict.h.
29 * Revision 1.10 1996/05/24 14:46:04 adam
30 * Added dict_grep_cmap function to define user-mapping in grep lookups.
32 * Revision 1.9 1996/02/02 13:43:51 adam
33 * The public functions simply use char instead of Dict_char to represent
34 * search strings. Dict_char is used internally only.
36 * Revision 1.8 1995/12/07 11:48:56 adam
37 * Insert operation obeys DICT_type = 1 (slack in page).
38 * Function dict_open exists if page size or magic aren't right.
40 * Revision 1.7 1995/09/04 12:33:32 adam
41 * Various cleanup. YAZ util used instead.
43 * Revision 1.6 1994/10/05 12:16:52 adam
44 * Pagesize is a resource now.
46 * Revision 1.5 1994/09/01 17:49:39 adam
47 * Removed stupid line. Work on insertion in dictionary. Not finished yet.
49 * Revision 1.4 1994/09/01 17:44:10 adam
50 * depend include change.
52 * Revision 1.3 1994/08/18 12:40:58 adam
53 * Some development of dictionary. Not finished at all!
55 * Revision 1.2 1994/08/17 13:32:20 adam
56 * Use cache in dict - not in bfile.
58 * Revision 1.1 1994/08/16 16:26:49 adam
69 Dict dict_open (BFiles bfs, const char *name, int cache, int rw,
74 char resource_str[80];
77 dict = (Dict) xmalloc (sizeof(*dict));
81 sprintf (resource_str, "dict.%s.pagesize", name);
83 dict->grep_cmap = NULL;
84 page_size = DICT_DEFAULT_PAGESIZE;
87 logf (LOG_WARN, "Resource %s was too small. Set to 2048",
91 dict->dbf = dict_bf_open (bfs, name, page_size, cache, rw);
96 logf (LOG_WARN, "Cannot open `%s'", name);
100 if (dict_bf_readp (dict->dbf, 0, &head_buf) <= 0)
102 strcpy (dict->head.magic_str, DICT_MAGIC);
105 dict->head.freelist = 0;
106 dict->head.page_size = page_size;
107 dict->head.compact_flag = compact_flag;
109 /* create header with information (page 0) */
111 dict_bf_newp (dict->dbf, 0, &head_buf, page_size);
113 else /* header was there, check magic and page size */
115 memcpy (&dict->head, head_buf, sizeof(dict->head));
116 if (strcmp (dict->head.magic_str, DICT_MAGIC))
118 logf (LOG_WARN, "Bad magic of `%s'", name);
121 if (dict->head.page_size != page_size)
123 logf (LOG_WARN, "Resource %s is %d and pagesize of `%s' is %d",
124 resource_str, page_size, name, dict->head.page_size);
128 if (dict->head.compact_flag)
129 dict_bf_compact(dict->dbf);
133 int dict_strcmp (const Dict_char *s1, const Dict_char *s2)
135 return strcmp ((const char *) s1, (const char *) s2);
138 int dict_strncmp (const Dict_char *s1, const Dict_char *s2, size_t n)
140 return strncmp ((const char *) s1, (const char *) s2, n);
143 int dict_strlen (const Dict_char *s)
145 return strlen((const char *) s);