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_noticeddb;
31 DBC *trackdb_opencursor(DB *db, DB_TXN *tid);
32 /* open a transaction */
34 int trackdb_closecursor(DBC *c);
35 /* close transaction, returns 0 or DB_LOCK_DEADLOCK */
37 int trackdb_notice(const char *track,
39 int trackdb_notice_tid(const char *track,
42 /* notice a track; return DB_NOTFOUND if new, else 0. _tid can return
43 * DB_LOCK_DEADLOCK too. */
45 int trackdb_obsolete(const char *track, DB_TXN *tid);
46 /* obsolete a track */
48 DB_TXN *trackdb_begin_transaction(void);
49 void trackdb_abort_transaction(DB_TXN *tid);
50 void trackdb_commit_transaction(DB_TXN *tid);
51 /* begin, abort or commit a transaction */
53 int trackdb_getdata(DB *db,
57 /* fetch and decode a database entry. Returns 0, DB_NOTFOUND or
58 * DB_LOCK_DEADLOCK. */
60 int trackdb_putdata(DB *db,
65 /* encode and store a database entry. Returns 0, DB_KEYEXIST or
66 * DB_LOCK_DEADLOCK. */
68 int trackdb_delkey(DB *db,
71 /* delete a database entry. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */
73 int trackdb_delkeydata(DB *db,
77 /* delete a (key,data) pair. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */
79 int trackdb_scan(const char *root,
80 int (*callback)(const char *track,
86 /* Call CALLBACK for each non-alias track below ROOT (or all tracks if ROOT is
87 * 0). Return 0 or DB_LOCK_DEADLOCK. CALLBACK should return 0 on success or
88 * EINTR to cancel the scan. */
90 /* fill KEY in with S, returns KEY */
92 static inline DBT *make_key(DBT *key, const char *s) {
93 memset(key, 0, sizeof *key);
94 key->data = (void *)s;
95 key->size = strlen(s);
99 /* set DATA up to receive data, returns DATA */
100 static inline DBT *prepare_data(DBT *data) {
101 memset(data, 0, sizeof *data);
102 data->flags = DB_DBT_MALLOC;
106 /* encode K and store in DATA, returns DATA */
107 static inline DBT *encode_data(DBT *data, const struct kvp *k) {
110 memset(data, 0, sizeof *data);
111 data->data = kvp_urlencode(k, &size);
116 #endif /* TRACKDB_INT_H */