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dbif.h
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dbif.h
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#ifdef HAVE_DB_H
#include <fcntl.h>
#include <db.h>
#define DB_HANDLE DB *
#define DATUM DBT
#define DATUM_SIZE(d) d.size
#define DATUM_DATA(d) d.data
#define DATUM_SET(d,val,len) \
do { memset(&d,0,sizeof(d)); \
d.data = (val); \
d.size = (len); \
} while (0)
#define DB_OPEN_WRITE(db, path) \
do { \
int status = db_create(&db,NULL,0); \
if (!status) \
status = (db->open)(db, NULL, path, NULL, DB_HASH, DB_CREATE, 0644); \
if (status) \
db = NULL; \
} while (0)
#define DB_OPEN_READ(db, path) \
do { \
int status = db_create(&db,NULL,0); \
if (!status) \
status = (db->open)(db, NULL, path, NULL, DB_HASH, DB_RDONLY, 0644); \
if (status) \
db = NULL; \
} while (0)
#define DB_STORE(db, key, data) \
db->put(db, NULL, &key, &data, 0)
#define DB_FETCH(db, key, data) \
do { \
data.flags = DB_DBT_MALLOC; \
data.data = NULL; \
db->get(db, NULL, &key, &data, 0); \
} while (0)
#define DB_CLOSE(db) db->close(db,0)
#else /* LIBDB */
#ifdef HAVE_LIBGDBM
#include <gdbm.h>
/* Don't force block size let gdbm/os decide */
#define BLOCK_SIZE 0
#ifndef GDBM_FAST
/* Tolerate older versions of gdbm ... */
#define GDBM_FAST 0
#endif
#define DB_HANDLE GDBM_FILE
#define DATUM datum
#define DATUM_SIZE(d) d.dsize
#define DATUM_DATA(d) d.dptr
#define DATUM_SET(d,val,len) do { d.dptr = (val); d.dsize = (len); } while (0)
#define DB_STORE(db, key, data) gdbm_store(db, key, data, GDBM_INSERT)
#define DB_OPEN_WRITE(db, path) db = gdbm_open(path, BLOCK_SIZE, GDBM_WRCREAT | GDBM_FAST, 0644, NULL)
#define DB_OPEN_READ(db, path) db = gdbm_open(path, BLOCK_SIZE, GDBM_READER, 0644, NULL)
#define DB_CLOSE(db) gdbm_close(db)
#define DB_FETCH(db,key,data) \
data = gdbm_fetch(db, key)
#endif /* LIBGDBM */
#endif /* LIBDB */