2 * This file is part of DisOrder
3 * Copyright (C) 2005, 2007 Richard Kettlewell
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.
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.
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
24 extern DB_ENV *trackdb_env;
26 extern DB *trackdb_tracksdb;
27 extern DB *trackdb_prefsdb;
28 extern DB *trackdb_searchdb;
29 extern DB *trackdb_tagsdb;
30 extern DB *trackdb_noticeddb;
31 extern DB *trackdb_globaldb;
33 DBC *trackdb_opencursor(DB *db, DB_TXN *tid);
34 /* open a transaction */
36 int trackdb_closecursor(DBC *c);
37 /* close transaction, returns 0 or DB_LOCK_DEADLOCK */
39 int trackdb_notice(const char *track,
41 int trackdb_notice_tid(const char *track,
44 /* notice a track; return DB_NOTFOUND if new, else 0. _tid can return
45 * DB_LOCK_DEADLOCK too. */
47 int trackdb_obsolete(const char *track, DB_TXN *tid);
48 /* obsolete a track */
50 DB_TXN *trackdb_begin_transaction(void);
51 void trackdb_abort_transaction(DB_TXN *tid);
52 void trackdb_commit_transaction(DB_TXN *tid);
53 /* begin, abort or commit a transaction */
55 int trackdb_getdata(DB *db,
59 /* fetch and decode a database entry. Returns 0, DB_NOTFOUND or
60 * DB_LOCK_DEADLOCK. */
62 int trackdb_putdata(DB *db,
67 /* encode and store a database entry. Returns 0, DB_KEYEXIST or
68 * DB_LOCK_DEADLOCK. */
70 int trackdb_delkey(DB *db,
73 /* delete a database entry. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */
75 int trackdb_delkeydata(DB *db,
79 /* delete a (key,data) pair. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */
81 int trackdb_scan(const char *root,
82 int (*callback)(const char *track,
88 /* Call CALLBACK for each non-alias track below ROOT (or all tracks if ROOT is
89 * 0). Return 0 or DB_LOCK_DEADLOCK. CALLBACK should return 0 on success or
90 * EINTR to cancel the scan. */
92 /* fill KEY in with S, returns KEY */
94 static inline DBT *make_key(DBT *key, const char *s) {
95 memset(key, 0, sizeof *key);
96 key->data = (void *)s;
97 key->size = strlen(s);
101 /* set DATA up to receive data, returns DATA */
102 static inline DBT *prepare_data(DBT *data) {
103 memset(data, 0, sizeof *data);
104 data->flags = DB_DBT_MALLOC;
108 /* encode K and store in DATA, returns DATA */
109 static inline DBT *encode_data(DBT *data, const struct kvp *k) {
112 memset(data, 0, sizeof *data);
113 data->data = kvp_urlencode(k, &size);
118 int trackdb_set_global_tid(const char *name,
121 int trackdb_get_global_tid(const char *name,
125 #endif /* TRACKDB_INT_H */