2 * This file is part of DisOrder
3 * Copyright (C) 2005 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;
30 DBC *trackdb_opencursor(DB *db, DB_TXN *tid);
31 /* open a transaction */
33 int trackdb_closecursor(DBC *c);
34 /* close transaction, returns 0 or DB_LOCK_DEADLOCK */
36 int trackdb_notice(const char *track,
38 int trackdb_notice_tid(const char *track,
41 /* notice a track; return DB_NOTFOUND if new, else 0. _tid can return
42 * DB_LOCK_DEADLOCK too. */
44 int trackdb_obsolete(const char *track, DB_TXN *tid);
45 /* obsolete a track */
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 */
52 int trackdb_getdata(DB *db,
56 /* fetch and decode a database entry. Returns 0, DB_NOTFOUND or
57 * DB_LOCK_DEADLOCK. */
59 int trackdb_putdata(DB *db,
64 /* encode and store a database entry. Returns 0, DB_KEYEXIST or
65 * DB_LOCK_DEADLOCK. */
67 int trackdb_delkey(DB *db,
70 /* delete a database entry. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */
72 int trackdb_delkeydata(DB *db,
76 /* delete a (key,data) pair. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */
78 int trackdb_scan(const char *root,
79 int (*callback)(const char *track,
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
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);
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;
104 /* encode K and store in DATA, returns DATA */
105 static inline DBT *encode_data(DBT *data, const struct kvp *k) {
108 memset(data, 0, sizeof *data);
109 data->data = kvp_urlencode(k, &size);
114 #endif /* TRACKDB_INT_H */