2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.11 1996-10-29 14:00:05 adam
8 * Page size given by DICT_DEFAULT_PAGESIZE in dict.h.
10 * Revision 1.10 1996/05/24 14:46:04 adam
11 * Added dict_grep_cmap function to define user-mapping in grep lookups.
13 * Revision 1.9 1996/02/02 13:43:51 adam
14 * The public functions simply use char instead of Dict_char to represent
15 * search strings. Dict_char is used internally only.
17 * Revision 1.8 1995/12/07 11:48:56 adam
18 * Insert operation obeys DICT_type = 1 (slack in page).
19 * Function dict_open exists if page size or magic aren't right.
21 * Revision 1.7 1995/09/04 12:33:32 adam
22 * Various cleanup. YAZ util used instead.
24 * Revision 1.6 1994/10/05 12:16:52 adam
25 * Pagesize is a resource now.
27 * Revision 1.5 1994/09/01 17:49:39 adam
28 * Removed stupid line. Work on insertion in dictionary. Not finished yet.
30 * Revision 1.4 1994/09/01 17:44:10 adam
31 * depend include change.
33 * Revision 1.3 1994/08/18 12:40:58 adam
34 * Some development of dictionary. Not finished at all!
36 * Revision 1.2 1994/08/17 13:32:20 adam
37 * Use cache in dict - not in bfile.
39 * Revision 1.1 1994/08/16 16:26:49 adam
50 Dict dict_open (const char *name, int cache, int rw)
55 char resource_str[80];
58 dict = xmalloc (sizeof(*dict));
60 sprintf (resource_str, "dict.%s.pagesize", name);
62 dict->grep_cmap = NULL;
63 page_size = DICT_DEFAULT_PAGESIZE;
66 logf (LOG_WARN, "Resource %s was too small. Set to 2048",
70 dict->dbf = dict_bf_open (name, page_size, cache, rw);
75 logf (LOG_WARN, "Cannot open `%s'", name);
79 if (dict_bf_readp (dict->dbf, 0, &head_buf) <= 0)
82 { /* create header with information (page 0) */
83 dict_bf_newp (dict->dbf, 0, &head_buf);
84 dh = (struct Dict_head *) head_buf;
85 strcpy(dh->magic_str, DICT_MAGIC);
86 dh->free_list = dh->last = 1;
87 dh->page_size = page_size;
88 memcpy (&dict->head, dh, sizeof(*dh));
91 { /* no header present, i.e. no dictionary at all */
92 dict->head.free_list = dict->head.last = 0;
93 dict->head.page_size = page_size;
96 else /* header was there, check magic and page size */
98 dh = (struct Dict_head *) head_buf;
99 if (strcmp (dh->magic_str, DICT_MAGIC))
101 logf (LOG_WARN, "Bad magic of `%s'", name);
104 if (dh->page_size != page_size)
106 logf (LOG_WARN, "Resource %s is %d and pagesize of `%s' is %d",
107 resource_str, page_size, name, dh->page_size);
110 memcpy (&dict->head, dh, sizeof(*dh));
115 int dict_strcmp (const Dict_char *s1, const Dict_char *s2)
117 return strcmp ((const char *) s1, (const char *) s2);
120 int dict_strlen (const Dict_char *s)
122 return strlen((const char *) s);