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