1 e2b5610c 2022-04-11 op /*
 2 c00beb4f 2022-04-14 op  * Copyright (c) 2022 Omar Polo <op@omarpolo.com>
 3 e2b5610c 2022-04-11 op  *
 4 e2b5610c 2022-04-11 op  * Permission to use, copy, modify, and distribute this software for any
 5 e2b5610c 2022-04-11 op  * purpose with or without fee is hereby granted, provided that the above
 6 e2b5610c 2022-04-11 op  * copyright notice and this permission notice appear in all copies.
 7 e2b5610c 2022-04-11 op  *
 8 e2b5610c 2022-04-11 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 e2b5610c 2022-04-11 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 e2b5610c 2022-04-11 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 e2b5610c 2022-04-11 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 e2b5610c 2022-04-11 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 e2b5610c 2022-04-11 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 e2b5610c 2022-04-11 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 e2b5610c 2022-04-11 op  */
16 e2b5610c 2022-04-11 op 
17 e2b5610c 2022-04-11 op #define DB_VERSION	 0
18 e2b5610c 2022-04-11 op #define DB_WORDLEN	32
19 e2b5610c 2022-04-11 op 
20 e2b5610c 2022-04-11 op struct db {
21 e2b5610c 2022-04-11 op 	uint8_t	*m;
22 e2b5610c 2022-04-11 op 	off_t	 len;
23 e2b5610c 2022-04-11 op 	uint32_t version;
24 e2b5610c 2022-04-11 op 	uint32_t nwords;
25 e2b5610c 2022-04-11 op 
26 e2b5610c 2022-04-11 op 	uint8_t	*idx_start;
27 e2b5610c 2022-04-11 op 	uint8_t	*idx_end;
28 e2b5610c 2022-04-11 op 	uint8_t	*list_start;
29 e2b5610c 2022-04-11 op 	uint8_t	*list_end;
30 e2b5610c 2022-04-11 op 	uint8_t	*docs_start;
31 e2b5610c 2022-04-11 op 	uint8_t	*docs_end;
32 e2b5610c 2022-04-11 op };
33 e2b5610c 2022-04-11 op 
34 e2b5610c 2022-04-11 op struct db_stats {
35 e2b5610c 2022-04-11 op 	size_t		 nwords;
36 e2b5610c 2022-04-11 op 	size_t		 ndocs;
37 e2b5610c 2022-04-11 op 	const char	*longest_word;
38 e2b5610c 2022-04-11 op 	const char	*most_popular;
39 e2b5610c 2022-04-11 op 	size_t		 most_popular_ndocs;
40 e2b5610c 2022-04-11 op };
41 e2b5610c 2022-04-11 op 
42 e2b5610c 2022-04-11 op struct db_entry {
43 e2b5610c 2022-04-11 op 	char	*name;
44 e2b5610c 2022-04-11 op 	char	*descr;
45 e2b5610c 2022-04-11 op };
46 e2b5610c 2022-04-11 op 
47 e2b5610c 2022-04-11 op typedef int (*db_hit_cb)(struct db *, struct db_entry *, void *);
48 e2b5610c 2022-04-11 op 
49 e2b5610c 2022-04-11 op struct dictionary;
50 e2b5610c 2022-04-11 op 
51 e2b5610c 2022-04-11 op int		 db_create(FILE *, struct dictionary *, struct db_entry *, size_t);
52 e2b5610c 2022-04-11 op int		 db_open(struct db *, int);
53 e2b5610c 2022-04-11 op uint32_t	*db_word_docs(struct db *, const char *, size_t *);
54 e2b5610c 2022-04-11 op int		 db_stats(struct db *, struct db_stats *);
55 e2b5610c 2022-04-11 op int		 db_listall(struct db *, db_hit_cb, void *);
56 e2b5610c 2022-04-11 op int		 db_doc_by_id(struct db *, int, struct db_entry *);
57 e2b5610c 2022-04-11 op void		 db_close(struct db *);