#include <curses.priv.h>
#include <tic.h>
#include <hashed_db.h>
#if USE_HASHED_DB
MODULE_ID("$Id: hashed_db.c,v 1.13 2006/08/19 19:48:38 tom Exp $")
#if HASHED_DB_API >= 2
static DBC *cursor;
#endif
NCURSES_EXPORT(DB *)
_nc_db_open(const char *path, bool modify)
{
DB *result = 0;
#if HASHED_DB_API >= 4
db_create(&result, NULL, 0);
result->open(result,
NULL,
path,
NULL,
DB_HASH,
modify ? DB_CREATE : DB_RDONLY,
0644);
#elif HASHED_DB_API >= 3
db_create(&result, NULL, 0);
result->open(result,
path,
NULL,
DB_HASH,
modify ? DB_CREATE : DB_RDONLY,
0644);
#elif HASHED_DB_API >= 2
int code;
if ((code = db_open(path,
DB_HASH,
modify ? DB_CREATE : DB_RDONLY,
0644,
(DB_ENV *) 0,
(DB_INFO *) 0,
&result)) != 0) {
T(("cannot open %s: %s", path, strerror(code)));
result = 0;
} else {
T(("opened %s", path));
}
#else
result = dbopen(path,
modify ? (O_CREAT | O_RDWR) : O_RDONLY,
0644,
DB_HASH,
NULL);
if (result != 0) {
T(("opened %s", path));
}
#endif
return result;
}
NCURSES_EXPORT(int)
_nc_db_close(DB * db)
{
int result;
#if HASHED_DB_API >= 2
result = db->close(db, 0);
#else
result = db->close(db);
#endif
return result;
}
NCURSES_EXPORT(int)
_nc_db_put(DB * db, DBT * key, DBT * data)
{
int result;
#if HASHED_DB_API >= 2
(void) db->del(db, NULL, key, 0);
result = db->put(db, NULL, key, data, DB_NOOVERWRITE);
#else
result = db->put(db, key, data, R_NOOVERWRITE);
#endif
return result;
}
NCURSES_EXPORT(int)
_nc_db_get(DB * db, DBT * key, DBT * data)
{
int result;
memset(data, 0, sizeof(*data));
#if HASHED_DB_API >= 2
result = db->get(db, NULL, key, data, 0);
#else
result = db->get(db, key, data, 0);
#endif
return result;
}
NCURSES_EXPORT(int)
_nc_db_first(DB * db, DBT * key, DBT * data)
{
int result;
memset(key, 0, sizeof(*key));
memset(data, 0, sizeof(*data));
#if HASHED_DB_API >= 2
if ((result = db->cursor(db, NULL, &cursor, 0)) == 0) {
result = cursor->c_get(cursor, key, data, DB_FIRST);
}
#else
result = db->seq(db, key, data, 0);
#endif
return result;
}
NCURSES_EXPORT(int)
_nc_db_next(DB * db, DBT * key, DBT * data)
{
int result;
#if HASHED_DB_API >= 2
(void) db;
if (cursor != 0) {
result = cursor->c_get(cursor, key, data, DB_NEXT);
} else {
result = -1;
}
#else
result = db->seq(db, key, data, 0);
#endif
return result;
}
NCURSES_EXPORT(bool)
_nc_db_have_index(DBT * key, DBT * data, char **buffer, int *size)
{
bool result = FALSE;
int used = data->size - 1;
char *have = (char *) data->data;
(void) key;
if (*have++ == 2) {
result = TRUE;
}
*buffer = have;
*size = used;
return result;
}
NCURSES_EXPORT(bool)
_nc_db_have_data(DBT * key, DBT * data, char **buffer, int *size)
{
bool result = FALSE;
int used = data->size - 1;
char *have = (char *) data->data;
if (*have++ == 0) {
if (data->size > key->size
&& IS_TIC_MAGIC(have)) {
result = TRUE;
}
}
*buffer = have;
*size = used;
return result;
}
#else
extern
NCURSES_EXPORT(void)
_nc_hashed_db(void);
NCURSES_EXPORT(void)
_nc_hashed_db(void)
{
}
#endif