2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.10 1996-05-24 14:46:04 adam
8 * Added dict_grep_cmap function to define user-mapping in grep lookups.
10 * Revision 1.9 1996/02/02 13:43:51 adam
11 * The public functions simply use char instead of Dict_char to represent
12 * search strings. Dict_char is used internally only.
14 * Revision 1.8 1995/12/07 11:48:56 adam
15 * Insert operation obeys DICT_type = 1 (slack in page).
16 * Function dict_open exists if page size or magic aren't right.
18 * Revision 1.7 1995/09/04 12:33:32 adam
19 * Various cleanup. YAZ util used instead.
21 * Revision 1.6 1994/10/05 12:16:52 adam
22 * Pagesize is a resource now.
24 * Revision 1.5 1994/09/01 17:49:39 adam
25 * Removed stupid line. Work on insertion in dictionary. Not finished yet.
27 * Revision 1.4 1994/09/01 17:44:10 adam
28 * depend include change.
30 * Revision 1.3 1994/08/18 12:40:58 adam
31 * Some development of dictionary. Not finished at all!
33 * Revision 1.2 1994/08/17 13:32:20 adam
34 * Use cache in dict - not in bfile.
36 * Revision 1.1 1994/08/16 16:26:49 adam
47 Dict dict_open (const char *name, int cache, int rw)
52 char resource_str[80];
55 dict = xmalloc (sizeof(*dict));
57 sprintf (resource_str, "dict.%s.pagesize", name);
59 dict->grep_cmap = NULL;
60 page_size = atoi (res_get_def (common_resource, resource_str,
61 DICT_DEFAULT_PAGESIZE));
64 logf (LOG_WARN, "Resource %s was too small. Set to 2048",
68 dict->dbf = dict_bf_open (name, page_size, cache, rw);
73 logf (LOG_WARN, "Cannot open `%s'", name);
77 if (dict_bf_readp (dict->dbf, 0, &head_buf) <= 0)
80 { /* create header with information (page 0) */
81 dict_bf_newp (dict->dbf, 0, &head_buf);
82 dh = (struct Dict_head *) head_buf;
83 strcpy(dh->magic_str, DICT_MAGIC);
84 dh->free_list = dh->last = 1;
85 dh->page_size = page_size;
86 memcpy (&dict->head, dh, sizeof(*dh));
89 { /* no header present, i.e. no dictionary at all */
90 dict->head.free_list = dict->head.last = 0;
91 dict->head.page_size = page_size;
94 else /* header was there, check magic and page size */
96 dh = (struct Dict_head *) head_buf;
97 if (strcmp (dh->magic_str, DICT_MAGIC))
99 logf (LOG_WARN, "Bad magic of `%s'", name);
102 if (dh->page_size != page_size)
104 logf (LOG_WARN, "Resource %s is %d and pagesize of `%s' is %d",
105 resource_str, page_size, name, dh->page_size);
108 memcpy (&dict->head, dh, sizeof(*dh));
113 int dict_strcmp (const Dict_char *s1, const Dict_char *s2)
115 return strcmp ((const char *) s1, (const char *) s2);
118 int dict_strlen (const Dict_char *s)
120 return strlen((const char *) s);