#define DB_DBM_HSEARCH 1
#include "db_config.h"
#include "db_int.h"
static DBM *__cur_db;
static void __db_no_open __P((void));
int
__db_dbm_init(file)
char *file;
{
if (__cur_db != NULL)
dbm_close(__cur_db);
if ((__cur_db =
dbm_open(file, O_CREAT | O_RDWR, __db_omode(OWNER_RW))) != NULL)
return (0);
if ((__cur_db = dbm_open(file, O_RDONLY, 0)) != NULL)
return (0);
return (-1);
}
int
__db_dbm_close()
{
if (__cur_db != NULL) {
dbm_close(__cur_db);
__cur_db = NULL;
}
return (0);
}
datum
__db_dbm_fetch(key)
datum key;
{
datum item;
if (__cur_db == NULL) {
__db_no_open();
item.dptr = NULL;
item.dsize = 0;
return (item);
}
return (dbm_fetch(__cur_db, key));
}
datum
__db_dbm_firstkey()
{
datum item;
if (__cur_db == NULL) {
__db_no_open();
item.dptr = NULL;
item.dsize = 0;
return (item);
}
return (dbm_firstkey(__cur_db));
}
datum
__db_dbm_nextkey(key)
datum key;
{
datum item;
COMPQUIET(key.dsize, 0);
if (__cur_db == NULL) {
__db_no_open();
item.dptr = NULL;
item.dsize = 0;
return (item);
}
return (dbm_nextkey(__cur_db));
}
int
__db_dbm_delete(key)
datum key;
{
if (__cur_db == NULL) {
__db_no_open();
return (-1);
}
return (dbm_delete(__cur_db, key));
}
int
__db_dbm_store(key, dat)
datum key, dat;
{
if (__cur_db == NULL) {
__db_no_open();
return (-1);
}
return (dbm_store(__cur_db, key, dat, DBM_REPLACE));
}
static void
__db_no_open()
{
(void)fprintf(stderr, "dbm: no open database.\n");
}
DBM *
__db_ndbm_open(file, oflags, mode)
const char *file;
int oflags, mode;
{
DB *dbp;
DBC *dbc;
int ret;
char path[DB_MAXPATHLEN];
if (strlen(file) + strlen(DBM_SUFFIX) + 1 > sizeof(path)) {
__os_set_errno(ENAMETOOLONG);
return (NULL);
}
(void)strcpy(path, file);
(void)strcat(path, DBM_SUFFIX);
if ((ret = db_create(&dbp, NULL, 0)) != 0) {
__os_set_errno(ret);
return (NULL);
}
if (oflags & O_WRONLY) {
oflags &= ~O_WRONLY;
oflags |= O_RDWR;
}
if ((ret = dbp->set_pagesize(dbp, 4096)) != 0 ||
(ret = dbp->set_h_ffactor(dbp, 40)) != 0 ||
(ret = dbp->set_h_nelem(dbp, 1)) != 0 ||
(ret = dbp->open(dbp, NULL,
path, NULL, DB_HASH, __db_oflags(oflags), mode)) != 0) {
__os_set_errno(ret);
return (NULL);
}
if ((ret = dbp->cursor(dbp, NULL, &dbc, 0)) != 0) {
(void)dbp->close(dbp, 0);
__os_set_errno(ret);
return (NULL);
}
return ((DBM *)dbc);
}
void
__db_ndbm_close(dbm)
DBM *dbm;
{
DBC *dbc;
dbc = (DBC *)dbm;
(void)dbc->dbp->close(dbc->dbp, 0);
}
datum
__db_ndbm_fetch(dbm, key)
DBM *dbm;
datum key;
{
DBC *dbc;
DBT _key, _data;
datum data;
int ret;
dbc = (DBC *)dbm;
DB_INIT_DBT(_key, key.dptr, key.dsize);
memset(&_data, 0, sizeof(DBT));
if ((ret = dbc->dbp->get(dbc->dbp, NULL, &_key, &_data, 0)) == 0) {
data.dptr = _data.data;
data.dsize = (int)_data.size;
} else {
data.dptr = NULL;
data.dsize = 0;
if (ret == DB_NOTFOUND)
__os_set_errno(ENOENT);
else {
__os_set_errno(ret);
F_SET(dbc->dbp, DB_AM_DBM_ERROR);
}
}
return (data);
}
datum
__db_ndbm_firstkey(dbm)
DBM *dbm;
{
DBC *dbc;
DBT _key, _data;
datum key;
int ret;
dbc = (DBC *)dbm;
memset(&_key, 0, sizeof(DBT));
memset(&_data, 0, sizeof(DBT));
if ((ret = dbc->get(dbc, &_key, &_data, DB_FIRST)) == 0) {
key.dptr = _key.data;
key.dsize = (int)_key.size;
} else {
key.dptr = NULL;
key.dsize = 0;
if (ret == DB_NOTFOUND)
__os_set_errno(ENOENT);
else {
__os_set_errno(ret);
F_SET(dbc->dbp, DB_AM_DBM_ERROR);
}
}
return (key);
}
datum
__db_ndbm_nextkey(dbm)
DBM *dbm;
{
DBC *dbc;
DBT _key, _data;
datum key;
int ret;
dbc = (DBC *)dbm;
memset(&_key, 0, sizeof(DBT));
memset(&_data, 0, sizeof(DBT));
if ((ret = dbc->get(dbc, &_key, &_data, DB_NEXT)) == 0) {
key.dptr = _key.data;
key.dsize = (int)_key.size;
} else {
key.dptr = NULL;
key.dsize = 0;
if (ret == DB_NOTFOUND)
__os_set_errno(ENOENT);
else {
__os_set_errno(ret);
F_SET(dbc->dbp, DB_AM_DBM_ERROR);
}
}
return (key);
}
int
__db_ndbm_delete(dbm, key)
DBM *dbm;
datum key;
{
DBC *dbc;
DBT _key;
int ret;
dbc = (DBC *)dbm;
DB_INIT_DBT(_key, key.dptr, key.dsize);
if ((ret = dbc->dbp->del(dbc->dbp, NULL, &_key, 0)) == 0)
return (0);
if (ret == DB_NOTFOUND)
__os_set_errno(ENOENT);
else {
__os_set_errno(ret);
F_SET(dbc->dbp, DB_AM_DBM_ERROR);
}
return (-1);
}
int
__db_ndbm_store(dbm, key, data, flags)
DBM *dbm;
datum key, data;
int flags;
{
DBC *dbc;
DBT _key, _data;
int ret;
dbc = (DBC *)dbm;
DB_INIT_DBT(_key, key.dptr, key.dsize);
DB_INIT_DBT(_data, data.dptr, data.dsize);
if ((ret = dbc->dbp->put(dbc->dbp, NULL,
&_key, &_data, flags == DBM_INSERT ? DB_NOOVERWRITE : 0)) == 0)
return (0);
if (ret == DB_KEYEXIST)
return (1);
__os_set_errno(ret);
F_SET(dbc->dbp, DB_AM_DBM_ERROR);
return (-1);
}
int
__db_ndbm_error(dbm)
DBM *dbm;
{
DBC *dbc;
dbc = (DBC *)dbm;
return (F_ISSET(dbc->dbp, DB_AM_DBM_ERROR));
}
int
__db_ndbm_clearerr(dbm)
DBM *dbm;
{
DBC *dbc;
dbc = (DBC *)dbm;
F_CLR(dbc->dbp, DB_AM_DBM_ERROR);
return (0);
}
int
__db_ndbm_rdonly(dbm)
DBM *dbm;
{
DBC *dbc;
dbc = (DBC *)dbm;
return (F_ISSET(dbc->dbp, DB_AM_RDONLY) ? 1 : 0);
}
int
__db_ndbm_dirfno(dbm)
DBM *dbm;
{
return (dbm_pagfno(dbm));
}
int
__db_ndbm_pagfno(dbm)
DBM *dbm;
{
DBC *dbc;
int fd;
dbc = (DBC *)dbm;
(void)dbc->dbp->fd(dbc->dbp, &fd);
return (fd);
}