2 * Copyright (C) 1994-2002, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.18 2002-05-03 13:47:15 adam
8 * make checkergcc happy
10 * Revision 1.17 2000/12/05 09:59:10 adam
11 * Work on dict_delete_subtree.
13 * Revision 1.16 1999/05/26 07:49:13 adam
16 * Revision 1.15 1999/05/15 14:36:37 adam
17 * Updated dictionary. Implemented "compression" of dictionary.
19 * Revision 1.14 1999/03/09 13:07:06 adam
20 * Work on dict_compact routine.
22 * Revision 1.13 1999/02/02 14:50:27 adam
23 * Updated WIN32 code specific sections. Changed header.
25 * Revision 1.12 1997/09/17 12:19:07 adam
26 * Zebra version corresponds to YAZ version 1.4.
27 * Changed Zebra server so that it doesn't depend on global common_resource.
29 * Revision 1.11 1996/10/29 14:00:05 adam
30 * Page size given by DICT_DEFAULT_PAGESIZE in dict.h.
32 * Revision 1.10 1996/05/24 14:46:04 adam
33 * Added dict_grep_cmap function to define user-mapping in grep lookups.
35 * Revision 1.9 1996/02/02 13:43:51 adam
36 * The public functions simply use char instead of Dict_char to represent
37 * search strings. Dict_char is used internally only.
39 * Revision 1.8 1995/12/07 11:48:56 adam
40 * Insert operation obeys DICT_type = 1 (slack in page).
41 * Function dict_open exists if page size or magic aren't right.
43 * Revision 1.7 1995/09/04 12:33:32 adam
44 * Various cleanup. YAZ util used instead.
46 * Revision 1.6 1994/10/05 12:16:52 adam
47 * Pagesize is a resource now.
49 * Revision 1.5 1994/09/01 17:49:39 adam
50 * Removed stupid line. Work on insertion in dictionary. Not finished yet.
52 * Revision 1.4 1994/09/01 17:44:10 adam
53 * depend include change.
55 * Revision 1.3 1994/08/18 12:40:58 adam
56 * Some development of dictionary. Not finished at all!
58 * Revision 1.2 1994/08/17 13:32:20 adam
59 * Use cache in dict - not in bfile.
61 * Revision 1.1 1994/08/16 16:26:49 adam
72 Dict dict_open (BFiles bfs, const char *name, int cache, int rw,
77 char resource_str[80];
80 dict = (Dict) xmalloc (sizeof(*dict));
84 sprintf (resource_str, "dict.%s.pagesize", name);
86 dict->grep_cmap = NULL;
87 page_size = DICT_DEFAULT_PAGESIZE;
90 logf (LOG_WARN, "Resource %s was too small. Set to 2048",
94 dict->dbf = dict_bf_open (bfs, name, page_size, cache, rw);
99 logf (LOG_WARN, "Cannot open `%s'", name);
103 if (dict_bf_readp (dict->dbf, 0, &head_buf) <= 0)
105 memset (dict->head.magic_str, 0, sizeof(dict->head.magic_str));
106 strcpy (dict->head.magic_str, DICT_MAGIC);
109 dict->head.freelist = 0;
110 dict->head.page_size = page_size;
111 dict->head.compact_flag = compact_flag;
113 /* create header with information (page 0) */
115 dict_bf_newp (dict->dbf, 0, &head_buf, page_size);
117 else /* header was there, check magic and page size */
119 memcpy (&dict->head, head_buf, sizeof(dict->head));
120 if (strcmp (dict->head.magic_str, DICT_MAGIC))
122 logf (LOG_WARN, "Bad magic of `%s'", name);
125 if (dict->head.page_size != page_size)
127 logf (LOG_WARN, "Resource %s is %d and pagesize of `%s' is %d",
128 resource_str, page_size, name, dict->head.page_size);
132 if (dict->head.compact_flag)
133 dict_bf_compact(dict->dbf);
137 int dict_strcmp (const Dict_char *s1, const Dict_char *s2)
139 return strcmp ((const char *) s1, (const char *) s2);
142 int dict_strncmp (const Dict_char *s1, const Dict_char *s2, size_t n)
144 return strncmp ((const char *) s1, (const char *) s2, n);
147 int dict_strlen (const Dict_char *s)
149 return strlen((const char *) s);