460b9539 |
1 | /* |
2 | * This file is part of DisOrder |
3 | * Copyright (C) 2005 Richard Kettlewell |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, but |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
18 | * USA |
19 | */ |
20 | |
21 | #ifndef TRACKDB_INT_H |
22 | #define TRACKDB_INT_H |
23 | |
24 | extern DB_ENV *trackdb_env; |
25 | |
26 | extern DB *trackdb_tracksdb; |
27 | extern DB *trackdb_prefsdb; |
28 | extern DB *trackdb_searchdb; |
29 | |
30 | DBC *trackdb_opencursor(DB *db, DB_TXN *tid); |
31 | /* open a transaction */ |
32 | |
33 | int trackdb_closecursor(DBC *c); |
34 | /* close transaction, returns 0 or DB_LOCK_DEADLOCK */ |
35 | |
36 | int trackdb_notice(const char *track, |
37 | const char *path); |
38 | int trackdb_notice_tid(const char *track, |
39 | const char *path, |
40 | DB_TXN *tid); |
41 | /* notice a track; return DB_NOTFOUND if new, else 0. _tid can return |
42 | * DB_LOCK_DEADLOCK too. */ |
43 | |
44 | int trackdb_obsolete(const char *track, DB_TXN *tid); |
45 | /* obsolete a track */ |
46 | |
47 | DB_TXN *trackdb_begin_transaction(void); |
48 | void trackdb_abort_transaction(DB_TXN *tid); |
49 | void trackdb_commit_transaction(DB_TXN *tid); |
50 | /* begin, abort or commit a transaction */ |
51 | |
52 | int trackdb_getdata(DB *db, |
53 | const char *track, |
54 | struct kvp **kp, |
55 | DB_TXN *tid); |
56 | /* fetch and decode a database entry. Returns 0, DB_NOTFOUND or |
57 | * DB_LOCK_DEADLOCK. */ |
58 | |
59 | int trackdb_putdata(DB *db, |
60 | const char *track, |
61 | const struct kvp *k, |
62 | DB_TXN *tid, |
63 | u_int32_t flags); |
64 | /* encode and store a database entry. Returns 0, DB_KEYEXIST or |
65 | * DB_LOCK_DEADLOCK. */ |
66 | |
67 | int trackdb_delkey(DB *db, |
68 | const char *track, |
69 | DB_TXN *tid); |
70 | /* delete a database entry. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */ |
71 | |
72 | int trackdb_delkeydata(DB *db, |
73 | const char *word, |
74 | const char *track, |
75 | DB_TXN *tid); |
76 | /* delete a (key,data) pair. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */ |
77 | |
78 | int trackdb_scan(const char *root, |
79 | int (*callback)(const char *track, |
80 | struct kvp *data, |
81 | void *u, |
82 | DB_TXN *tid), |
83 | void *u, |
84 | DB_TXN *tid); |
85 | /* Call CALLBACK for each non-alias track below ROOT. Return 0 or |
86 | * DB_LOCK_DEADLOCK. CALLBACK should return 0 on success or EINTR to cancel |
87 | * the scan. */ |
88 | |
89 | /* fill KEY in with S, returns KEY */ |
90 | static inline DBT *make_key(DBT *key, const char *s) { |
91 | memset(key, 0, sizeof *key); |
92 | key->data = (void *)s; |
93 | key->size = strlen(s); |
94 | return key; |
95 | } |
96 | |
97 | /* set DATA up to receive data, returns DATA */ |
98 | static inline DBT *prepare_data(DBT *data) { |
99 | memset(data, 0, sizeof *data); |
100 | data->flags = DB_DBT_MALLOC; |
101 | return data; |
102 | } |
103 | |
104 | /* encode K and store in DATA, returns DATA */ |
105 | static inline DBT *encode_data(DBT *data, const struct kvp *k) { |
106 | size_t size; |
107 | |
108 | memset(data, 0, sizeof *data); |
109 | data->data = kvp_urlencode(k, &size); |
110 | data->size = size; |
111 | return data; |
112 | } |
113 | |
114 | #endif /* TRACKDB_INT_H */ |
115 | |
116 | /* |
117 | Local Variables: |
118 | c-basic-offset:2 |
119 | comment-column:40 |
120 | fill-column:79 |
121 | indent-tabs-mode:nil |
122 | End: |
123 | */ |