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cpython/Modules/bsddbmodule.c

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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Berkeley DB interface.
Author: Michael McLay
Hacked: Guido van Rossum
Btree and Recno additions plus sequence methods: David Ely
XXX To do:
- provide interface to the B-tree and record libraries too
- provide a way to access the various hash functions
- support more open flags
*/
#include "Python.h"
#ifdef WITH_THREAD
#include "thread.h"
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <db.h>
/* Please don't include internal header files of the Berkeley db package
(it messes up the info required in the Setup file) */
typedef struct {
PyObject_HEAD
DB *di_bsddb;
int di_size; /* -1 means recompute */
#ifdef WITH_THREAD
type_lock di_lock;
#endif
} bsddbobject;
staticforward PyTypeObject Bsddbtype;
#define is_bsddbobject(v) ((v)->ob_type == &Bsddbtype)
#define check_bsddbobject_open(v) if ((v)->di_bsddb == NULL) \
{ PyErr_SetString(BsddbError, "BSDDB object has already been closed"); \
return NULL; }
static PyObject *BsddbError;
static PyObject *
newdbhashobject(file, flags, mode,
bsize, ffactor, nelem, cachesize, hash, lorder)
char *file;
int flags;
int mode;
int bsize;
int ffactor;
int nelem;
int cachesize;
int hash; /* XXX ignored */
int lorder;
{
bsddbobject *dp;
HASHINFO info;
if ((dp = PyObject_NEW(bsddbobject, &Bsddbtype)) == NULL)
return NULL;
info.bsize = bsize;
info.ffactor = ffactor;
info.nelem = nelem;
info.cachesize = cachesize;
info.hash = NULL; /* XXX should derive from hash argument */
info.lorder = lorder;
#ifdef O_BINARY
flags |= O_BINARY;
#endif
Py_BEGIN_ALLOW_THREADS
dp->di_bsddb = dbopen(file, flags, mode, DB_HASH, &info);
Py_END_ALLOW_THREADS
if (dp->di_bsddb == NULL) {
PyErr_SetFromErrno(BsddbError);
#ifdef WITH_THREAD
dp->di_lock = NULL;
#endif
Py_DECREF(dp);
return NULL;
}
dp->di_size = -1;
#ifdef WITH_THREAD
dp->di_lock = allocate_lock();
if (dp->di_lock == NULL) {
PyErr_SetString(BsddbError, "can't allocate lock");
Py_DECREF(dp);
return NULL;
}
#endif
return (PyObject *)dp;
}
static PyObject *
newdbbtobject(file, flags, mode,
btflags, cachesize, maxkeypage, minkeypage, psize, lorder)
char *file;
int flags;
int mode;
int btflags;
int cachesize;
int maxkeypage;
int minkeypage;
int psize;
int lorder;
{
bsddbobject *dp;
BTREEINFO info;
if ((dp = PyObject_NEW(bsddbobject, &Bsddbtype)) == NULL)
return NULL;
info.flags = btflags;
info.cachesize = cachesize;
info.maxkeypage = maxkeypage;
info.minkeypage = minkeypage;
info.psize = psize;
info.lorder = lorder;
info.compare = 0; /* Use default comparison functions, for now..*/
info.prefix = 0;
#ifdef O_BINARY
flags |= O_BINARY;
#endif
Py_BEGIN_ALLOW_THREADS
dp->di_bsddb = dbopen(file, flags, mode, DB_BTREE, &info);
Py_END_ALLOW_THREADS
if (dp->di_bsddb == NULL) {
PyErr_SetFromErrno(BsddbError);
#ifdef WITH_THREAD
dp->di_lock = NULL;
#endif
Py_DECREF(dp);
return NULL;
}
dp->di_size = -1;
#ifdef WITH_THREAD
dp->di_lock = allocate_lock();
if (dp->di_lock == NULL) {
PyErr_SetString(BsddbError, "can't allocate lock");
Py_DECREF(dp);
return NULL;
}
#endif
return (PyObject *)dp;
}
static PyObject *
newdbrnobject(file, flags, mode,
rnflags, cachesize, psize, lorder, reclen, bval, bfname)
char *file;
int flags;
int mode;
int rnflags;
int cachesize;
int psize;
int lorder;
size_t reclen;
u_char bval;
char *bfname;
{
bsddbobject *dp;
RECNOINFO info;
if ((dp = PyObject_NEW(bsddbobject, &Bsddbtype)) == NULL)
return NULL;
info.flags = rnflags;
info.cachesize = cachesize;
info.psize = psize;
info.lorder = lorder;
info.reclen = reclen;
info.bval = bval;
info.bfname = bfname;
#ifdef O_BINARY
flags |= O_BINARY;
#endif
Py_BEGIN_ALLOW_THREADS
dp->di_bsddb = dbopen(file, flags, mode, DB_RECNO, &info);
Py_END_ALLOW_THREADS
if (dp->di_bsddb == NULL) {
PyErr_SetFromErrno(BsddbError);
#ifdef WITH_THREAD
dp->di_lock = NULL;
#endif
Py_DECREF(dp);
return NULL;
}
dp->di_size = -1;
#ifdef WITH_THREAD
dp->di_lock = allocate_lock();
if (dp->di_lock == NULL) {
PyErr_SetString(BsddbError, "can't allocate lock");
Py_DECREF(dp);
return NULL;
}
#endif
return (PyObject *)dp;
}
static void
bsddb_dealloc(dp)
bsddbobject *dp;
{
#ifdef WITH_THREAD
if (dp->di_lock) {
acquire_lock(dp->di_lock, 0);
release_lock(dp->di_lock);
free_lock(dp->di_lock);
dp->di_lock = NULL;
}
#endif
if (dp->di_bsddb != NULL) {
int status;
Py_BEGIN_ALLOW_THREADS
status = (dp->di_bsddb->close)(dp->di_bsddb);
Py_END_ALLOW_THREADS
if (status != 0)
fprintf(stderr,
"Python bsddb: close errno %d in dealloc\n",
errno);
}
PyMem_DEL(dp);
}
#ifdef WITH_THREAD
#define BSDDB_BGN_SAVE(_dp) Py_BEGIN_ALLOW_THREADS acquire_lock(_dp->di_lock,1);
#define BSDDB_END_SAVE(_dp) release_lock(_dp->di_lock); Py_END_ALLOW_THREADS
#else
#define BSDDB_BGN_SAVE(_dp) Py_BEGIN_ALLOW_THREADS
#define BSDDB_END_SAVE(_dp) Py_END_ALLOW_THREADS
#endif
static int
bsddb_length(dp)
bsddbobject *dp;
{
if (dp->di_bsddb == NULL) {
PyErr_SetString(BsddbError, "BSDDB object has already been closed");
return -1;
}
if (dp->di_size < 0) {
DBT krec, drec;
int status;
int size = 0;
BSDDB_BGN_SAVE(dp)
for (status = (dp->di_bsddb->seq)(dp->di_bsddb,
&krec, &drec,R_FIRST);
status == 0;
status = (dp->di_bsddb->seq)(dp->di_bsddb,
&krec, &drec, R_NEXT))
size++;
BSDDB_END_SAVE(dp)
if (status < 0) {
PyErr_SetFromErrno(BsddbError);
return -1;
}
dp->di_size = size;
}
return dp->di_size;
}
static PyObject *
bsddb_subscript(dp, key)
bsddbobject *dp;
PyObject *key;
{
int status;
DBT krec, drec;
char *data,buf[4096];
int size;
PyObject *result;
if (!PyArg_Parse(key, "s#", &data, &size))
return NULL;
check_bsddbobject_open(dp);
krec.data = data;
krec.size = size;
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->get)(dp->di_bsddb, &krec, &drec, 0);
if (status == 0) {
if (drec.size > sizeof(buf)) data = malloc(drec.size);
else data = buf;
memcpy(data,drec.data,drec.size);
}
BSDDB_END_SAVE(dp)
if (status != 0) {
if (status < 0)
PyErr_SetFromErrno(BsddbError);
else
PyErr_SetObject(PyExc_KeyError, key);
return NULL;
}
result = PyString_FromStringAndSize(data, (int)drec.size);
if (data != buf) free(data);
return result;
}
static int
bsddb_ass_sub(dp, key, value)
bsddbobject *dp;
PyObject *key, *value;
{
int status;
DBT krec, drec;
char *data;
int size;
if (!PyArg_Parse(key, "s#", &data, &size)) {
PyErr_SetString(PyExc_TypeError,
"bsddb key type must be string");
return -1;
}
if (dp->di_bsddb == NULL) {
PyErr_SetString(BsddbError, "BSDDB object has already been closed");
return -1;
}
krec.data = data;
krec.size = size;
dp->di_size = -1;
if (value == NULL) {
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->del)(dp->di_bsddb, &krec, 0);
BSDDB_END_SAVE(dp)
}
else {
if (!PyArg_Parse(value, "s#", &data, &size)) {
PyErr_SetString(PyExc_TypeError,
"bsddb value type must be string");
return -1;
}
drec.data = data;
drec.size = size;
#if 0
/* For RECNO, put fails with 'No space left on device'
after a few short records are added?? Looks fine
to this point... linked with 1.85 on Solaris Intel
Roger E. Masse 1/16/97
*/
printf("before put data: '%s', size: %d\n",
drec.data, drec.size);
printf("before put key= '%s', size= %d\n",
krec.data, krec.size);
#endif
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->put)(dp->di_bsddb, &krec, &drec, 0);
BSDDB_END_SAVE(dp)
}
if (status != 0) {
if (status < 0)
PyErr_SetFromErrno(BsddbError);
else
PyErr_SetObject(PyExc_KeyError, key);
return -1;
}
return 0;
}
static PyMappingMethods bsddb_as_mapping = {
(inquiry)bsddb_length, /*mp_length*/
(binaryfunc)bsddb_subscript, /*mp_subscript*/
(objobjargproc)bsddb_ass_sub, /*mp_ass_subscript*/
};
static PyObject *
bsddb_close(dp, args)
bsddbobject *dp;
PyObject *args;
{
if (!PyArg_NoArgs(args))
return NULL;
if (dp->di_bsddb != NULL) {
int status;
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->close)(dp->di_bsddb);
BSDDB_END_SAVE(dp)
if (status != 0) {
dp->di_bsddb = NULL;
PyErr_SetFromErrno(BsddbError);
return NULL;
}
}
dp->di_bsddb = NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
bsddb_keys(dp, args)
bsddbobject *dp;
PyObject *args;
{
PyObject *list, *item;
DBT krec, drec;
char *data,buf[4096];
int status;
int err;
if (!PyArg_NoArgs(args))
return NULL;
check_bsddbobject_open(dp);
list = PyList_New(0);
if (list == NULL)
return NULL;
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_FIRST);
if (status == 0) {
if (krec.size > sizeof(buf)) data = malloc(krec.size);
else data = buf;
memcpy(data,krec.data,krec.size);
}
BSDDB_END_SAVE(dp)
while (status == 0) {
item = PyString_FromStringAndSize(data, (int)krec.size);
if (data != buf) free(data);
if (item == NULL) {
Py_DECREF(list);
return NULL;
}
err = PyList_Append(list, item);
Py_DECREF(item);
if (err != 0) {
Py_DECREF(list);
return NULL;
}
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_NEXT);
if (status == 0) {
if (krec.size > sizeof(buf)) data = malloc(krec.size);
else data = buf;
memcpy(data,krec.data,krec.size);
}
BSDDB_END_SAVE(dp)
}
if (status < 0) {
PyErr_SetFromErrno(BsddbError);
Py_DECREF(list);
return NULL;
}
if (dp->di_size < 0)
dp->di_size = PyList_Size(list); /* We just did the work */
return list;
}
static PyObject *
bsddb_has_key(dp, args)
bsddbobject *dp;
PyObject *args;
{
DBT krec, drec;
int status;
char *data;
int size;
if (!PyArg_Parse(args, "s#", &data, &size))
return NULL;
check_bsddbobject_open(dp);
krec.data = data;
krec.size = size;
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->get)(dp->di_bsddb, &krec, &drec, 0);
BSDDB_END_SAVE(dp)
if (status < 0) {
PyErr_SetFromErrno(BsddbError);
return NULL;
}
return PyInt_FromLong(status == 0);
}
static PyObject *
bsddb_set_location(dp, key)
bsddbobject *dp;
PyObject *key;
{
int status;
DBT krec, drec;
char *data,buf[4096];
int size;
PyObject *result;
if (!PyArg_Parse(key, "s#", &data, &size))
return NULL;
check_bsddbobject_open(dp);
krec.data = data;
krec.size = size;
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_CURSOR);
if (status == 0) {
if (drec.size > sizeof(buf)) data = malloc(drec.size);
else data = buf;
memcpy(data,drec.data,drec.size);
}
BSDDB_END_SAVE(dp)
if (status != 0) {
if (status < 0)
PyErr_SetFromErrno(BsddbError);
else
PyErr_SetObject(PyExc_KeyError, key);
return NULL;
}
result = Py_BuildValue("s#s#", krec.data, krec.size, data, drec.size);
if (data != buf) free(data);
return result;
}
static PyObject *
bsddb_seq(dp, args, sequence_request)
bsddbobject *dp;
PyObject *args;
int sequence_request;
{
int status;
DBT krec, drec;
char *kdata,kbuf[4096];
char *ddata,dbuf[4096];
PyObject *result;
if (!PyArg_NoArgs(args))
return NULL;
check_bsddbobject_open(dp);
krec.data = 0;
krec.size = 0;
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec,
&drec, sequence_request);
if (status == 0) {
if (krec.size > sizeof(kbuf)) kdata = malloc(krec.size);
else kdata = kbuf;
memcpy(kdata,krec.data,krec.size);
if (drec.size > sizeof(dbuf)) ddata = malloc(drec.size);
else ddata = dbuf;
memcpy(ddata,drec.data,drec.size);
}
BSDDB_END_SAVE(dp)
if (status != 0) {
if (status < 0)
PyErr_SetFromErrno(BsddbError);
else
PyErr_SetObject(PyExc_KeyError, args);
return NULL;
}
result = Py_BuildValue("s#s#", kdata, krec.size, ddata, drec.size);
if (kdata != kbuf) free(kdata);
if (ddata != dbuf) free(ddata);
return result;
}
static PyObject *
bsddb_next(dp, key)
bsddbobject *dp;
PyObject *key;
{
return bsddb_seq(dp, key, R_NEXT);
}
static PyObject *
bsddb_previous(dp, key)
bsddbobject *dp;
PyObject *key;
{
return bsddb_seq(dp, key, R_PREV);
}
static PyObject *
bsddb_first(dp, key)
bsddbobject *dp;
PyObject *key;
{
return bsddb_seq(dp, key, R_FIRST);
}
static PyObject *
bsddb_last(dp, key)
bsddbobject *dp;
PyObject *key;
{
return bsddb_seq(dp, key, R_LAST);
}
static PyObject *
bsddb_sync(dp, args)
bsddbobject *dp;
PyObject *args;
{
int status;
if (!PyArg_NoArgs(args))
return NULL;
check_bsddbobject_open(dp);
BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->sync)(dp->di_bsddb, 0);
BSDDB_END_SAVE(dp)
if (status != 0) {
PyErr_SetFromErrno(BsddbError);
return NULL;
}
return PyInt_FromLong(status = 0);
}
static PyMethodDef bsddb_methods[] = {
{"close", (PyCFunction)bsddb_close},
{"keys", (PyCFunction)bsddb_keys},
{"has_key", (PyCFunction)bsddb_has_key},
{"set_location", (PyCFunction)bsddb_set_location},
{"next", (PyCFunction)bsddb_next},
{"previous", (PyCFunction)bsddb_previous},
{"first", (PyCFunction)bsddb_first},
{"last", (PyCFunction)bsddb_last},
{"sync", (PyCFunction)bsddb_sync},
{NULL, NULL} /* sentinel */
};
static PyObject *
bsddb_getattr(dp, name)
PyObject *dp;
char *name;
{
return Py_FindMethod(bsddb_methods, dp, name);
}
static PyTypeObject Bsddbtype = {
PyObject_HEAD_INIT(NULL)
0,
"bsddb",
sizeof(bsddbobject),
0,
(destructor)bsddb_dealloc, /*tp_dealloc*/
0, /*tp_print*/
(getattrfunc)bsddb_getattr, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
&bsddb_as_mapping, /*tp_as_mapping*/
};
static PyObject *
bsdhashopen(self, args)
PyObject *self;
PyObject *args;
{
char *file;
char *flag = NULL;
int flags = O_RDONLY;
int mode = 0666;
int bsize = 0;
int ffactor = 0;
int nelem = 0;
int cachesize = 0;
int hash = 0; /* XXX currently ignored */
int lorder = 0;
if (!PyArg_ParseTuple(args, "s|siiiiiii",
&file, &flag, &mode,
&bsize, &ffactor, &nelem, &cachesize,
&hash, &lorder))
return NULL;
if (flag != NULL) {
/* XXX need to pass O_EXCL, O_EXLOCK, O_NONBLOCK, O_SHLOCK */
if (flag[0] == 'r')
flags = O_RDONLY;
else if (flag[0] == 'w')
flags = O_RDWR;
else if (flag[0] == 'c')
flags = O_RDWR|O_CREAT;
else if (flag[0] == 'n')
flags = O_RDWR|O_CREAT|O_TRUNC;
else {
PyErr_SetString(BsddbError,
"Flag should begin with 'r', 'w', 'c' or 'n'");
return NULL;
}
if (flag[1] == 'l') {
#if defined(O_EXLOCK) && defined(O_SHLOCK)
if (flag[0] == 'r')
flags |= O_SHLOCK;
else
flags |= O_EXLOCK;
#else
PyErr_SetString(BsddbError,
"locking not supported on this platform");
return NULL;
#endif
}
}
return newdbhashobject(file, flags, mode,
bsize, ffactor, nelem, cachesize, hash, lorder);
}
static PyObject *
bsdbtopen(self, args)
PyObject *self;
PyObject *args;
{
char *file;
char *flag = NULL;
int flags = O_RDONLY;
int mode = 0666;
int cachesize = 0;
int maxkeypage = 0;
int minkeypage = 0;
int btflags = 0;
unsigned int psize = 0;
int lorder = 0;
if (!PyArg_ParseTuple(args, "s|siiiiiii",
&file, &flag, &mode,
&btflags, &cachesize, &maxkeypage, &minkeypage,
&psize, &lorder))
return NULL;
if (flag != NULL) {
/* XXX need to pass O_EXCL, O_EXLOCK, O_NONBLOCK, O_SHLOCK */
if (flag[0] == 'r')
flags = O_RDONLY;
else if (flag[0] == 'w')
flags = O_RDWR;
else if (flag[0] == 'c')
flags = O_RDWR|O_CREAT;
else if (flag[0] == 'n')
flags = O_RDWR|O_CREAT|O_TRUNC;
else {
PyErr_SetString(BsddbError,
"Flag should begin with 'r', 'w', 'c' or 'n'");
return NULL;
}
if (flag[1] == 'l') {
#if defined(O_EXLOCK) && defined(O_SHLOCK)
if (flag[0] == 'r')
flags |= O_SHLOCK;
else
flags |= O_EXLOCK;
#else
PyErr_SetString(BsddbError,
"locking not supported on this platform");
return NULL;
#endif
}
}
return newdbbtobject(file, flags, mode,
btflags, cachesize, maxkeypage, minkeypage,
psize, lorder);
}
static PyObject *
bsdrnopen(self, args)
PyObject *self;
PyObject *args;
{
char *file;
char *flag = NULL;
int flags = O_RDONLY;
int mode = 0666;
int cachesize = 0;
int rnflags = 0;
unsigned int psize = 0;
int lorder = 0;
size_t reclen = 0;
char *bval = "";
char *bfname = NULL;
if (!PyArg_ParseTuple(args, "s|siiiiiiss",
&file, &flag, &mode,
&rnflags, &cachesize, &psize, &lorder,
&reclen, &bval, &bfname))
return NULL;
# if 0
printf("file: %s\n", file);
printf("flag: %s\n", flag);
printf("mode: %d\n", mode);
printf("rnflags: 0x%x\n", rnflags);
printf("cachesize: %d\n", cachesize);
printf("psize: %d\n", psize);
printf("lorder: %d\n", 0);
printf("reclen: %d\n", reclen);
printf("bval: %c\n", bval[0]);
printf("bfname %s\n", bfname);
#endif
if (flag != NULL) {
/* XXX need to pass O_EXCL, O_EXLOCK, O_NONBLOCK, O_SHLOCK */
if (flag[0] == 'r')
flags = O_RDONLY;
else if (flag[0] == 'w')
flags = O_RDWR;
else if (flag[0] == 'c')
flags = O_RDWR|O_CREAT;
else if (flag[0] == 'n')
flags = O_RDWR|O_CREAT|O_TRUNC;
else {
PyErr_SetString(BsddbError,
"Flag should begin with 'r', 'w', 'c' or 'n'");
return NULL;
}
if (flag[1] == 'l') {
#if defined(O_EXLOCK) && defined(O_SHLOCK)
if (flag[0] == 'r')
flags |= O_SHLOCK;
else
flags |= O_EXLOCK;
#else
PyErr_SetString(BsddbError,
"locking not supported on this platform");
return NULL;
#endif
}
else if (flag[1] != '\0') {
PyErr_SetString(BsddbError,
"Flag char 2 should be 'l' or absent");
return NULL;
}
}
return newdbrnobject(file, flags, mode, rnflags, cachesize,
psize, lorder, reclen, bval[0], bfname);
}
static PyMethodDef bsddbmodule_methods[] = {
{"hashopen", (PyCFunction)bsdhashopen, 1},
{"btopen", (PyCFunction)bsdbtopen, 1},
{"rnopen", (PyCFunction)bsdrnopen, 1},
{0, 0},
};
void
initbsddb() {
PyObject *m, *d;
Bsddbtype.ob_type = &PyType_Type;
m = Py_InitModule("bsddb", bsddbmodule_methods);
d = PyModule_GetDict(m);
BsddbError = PyErr_NewException("bsddb.error", NULL, NULL);
if (BsddbError != NULL)
PyDict_SetItemString(d, "error", BsddbError);
}
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