libvirt/python/typewrappers.c
2012-12-21 11:17:14 +00:00

525 lines
10 KiB
C

/*
* types.c: converter functions between the internal representation
* and the Python objects
*
* Copyright (C) 2005, 2007, 2012 Red Hat, Inc.
*
* Daniel Veillard <veillard@redhat.com>
*/
#include <config.h>
/* Horrible kludge to work around even more horrible name-space pollution
* via Python.h. That file includes /usr/include/python2.5/pyconfig*.h,
* which has over 180 autoconf-style HAVE_* definitions. Shame on them. */
#undef HAVE_PTHREAD_H
#include "typewrappers.h"
#include "viralloc.h"
#ifndef Py_CAPSULE_H
typedef void(*PyCapsule_Destructor)(void *, void *);
#endif
static PyObject *
libvirt_buildPyObject(void *cobj,
const char *name,
PyCapsule_Destructor destr)
{
PyObject *ret;
#ifdef Py_CAPSULE_H
ret = PyCapsule_New(cobj, name, destr);
#else
ret = PyCObject_FromVoidPtrAndDesc(cobj, (void *) name, destr);
#endif /* _TEST_CAPSULE */
return ret;
}
PyObject *
libvirt_intWrap(int val)
{
PyObject *ret;
ret = PyInt_FromLong((long) val);
return ret;
}
PyObject *
libvirt_longWrap(long val)
{
PyObject *ret;
ret = PyInt_FromLong(val);
return ret;
}
PyObject *
libvirt_ulongWrap(unsigned long val)
{
PyObject *ret;
ret = PyLong_FromLong(val);
return ret;
}
PyObject *
libvirt_longlongWrap(long long val)
{
PyObject *ret;
ret = PyLong_FromUnsignedLongLong((unsigned long long) val);
return ret;
}
PyObject *
libvirt_ulonglongWrap(unsigned long long val)
{
PyObject *ret;
ret = PyLong_FromUnsignedLongLong(val);
return ret;
}
PyObject *
libvirt_charPtrSizeWrap(char *str, Py_ssize_t size)
{
PyObject *ret;
if (str == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = PyString_FromStringAndSize(str, size);
VIR_FREE(str);
return ret;
}
PyObject *
libvirt_charPtrWrap(char *str)
{
PyObject *ret;
if (str == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = PyString_FromString(str);
VIR_FREE(str);
return ret;
}
PyObject *
libvirt_constcharPtrWrap(const char *str)
{
PyObject *ret;
if (str == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = PyString_FromString(str);
return ret;
}
int
libvirt_intUnwrap(PyObject *obj, int *val)
{
long long_val;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
/* If obj is type of PyInt_Type, PyInt_AsLong converts it
* to C long type directly. If it is of PyLong_Type, PyInt_AsLong
* will call PyLong_AsLong() to deal with it automatically.
*/
long_val = PyInt_AsLong(obj);
if ((long_val == -1) && PyErr_Occurred())
return -1;
#if LONG_MAX != INT_MAX
if (long_val >= INT_MIN && long_val <= INT_MAX) {
*val = long_val;
} else {
PyErr_SetString(PyExc_OverflowError,
"Python int too large to convert to C int");
return -1;
}
#else
*val = long_val;
#endif
return 0;
}
int
libvirt_uintUnwrap(PyObject *obj, unsigned int *val)
{
long long_val;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
long_val = PyInt_AsLong(obj);
if ((long_val == -1) && PyErr_Occurred())
return -1;
if (long_val >= 0 && long_val <= UINT_MAX) {
*val = long_val;
} else {
PyErr_SetString(PyExc_OverflowError,
"Python int too large to convert to C unsigned int");
return -1;
}
return 0;
}
int
libvirt_longUnwrap(PyObject *obj, long *val)
{
long long_val;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
long_val = PyInt_AsLong(obj);
if ((long_val == -1) && PyErr_Occurred())
return -1;
*val = long_val;
return 0;
}
int
libvirt_ulongUnwrap(PyObject *obj, unsigned long *val)
{
long long_val;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
long_val = PyInt_AsLong(obj);
if ((long_val == -1) && PyErr_Occurred())
return -1;
if (long_val >= 0) {
*val = long_val;
} else {
PyErr_SetString(PyExc_OverflowError,
"negative Python int cannot be converted to C unsigned long");
return -1;
}
return 0;
}
int
libvirt_longlongUnwrap(PyObject *obj, long long *val)
{
long long llong_val = -1;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
/* If obj is of PyInt_Type, PyLong_AsLongLong
* will call PyInt_AsLong() to handle it automatically.
*/
if (PyInt_Check(obj) || PyLong_Check(obj))
llong_val = PyLong_AsLongLong(obj);
else
PyErr_SetString(PyExc_TypeError, "an integer is required");
if ((llong_val == -1) && PyErr_Occurred())
return -1;
*val = llong_val;
return 0;
}
int
libvirt_ulonglongUnwrap(PyObject *obj, unsigned long long *val)
{
unsigned long long ullong_val = -1;
long long llong_val;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
/* The PyLong_AsUnsignedLongLong doesn't check the type of
* obj, only accept argument of PyLong_Type, so we check it instead.
*/
if (PyInt_Check(obj)) {
llong_val = PyInt_AsLong(obj);
if (llong_val < 0)
PyErr_SetString(PyExc_OverflowError,
"negative Python int cannot be converted to C unsigned long long");
else
ullong_val = llong_val;
} else if (PyLong_Check(obj)) {
ullong_val = PyLong_AsUnsignedLongLong(obj);
} else {
PyErr_SetString(PyExc_TypeError, "an integer is required");
}
if ((ullong_val == -1) && PyErr_Occurred())
return -1;
*val = ullong_val;
return 0;
}
int
libvirt_doubleUnwrap(PyObject *obj, double *val)
{
double double_val;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
double_val = PyFloat_AsDouble(obj);
if ((double_val == -1) && PyErr_Occurred())
return -1;
*val = double_val;
return 0;
}
int
libvirt_boolUnwrap(PyObject *obj, bool *val)
{
int ret;
if (!obj) {
PyErr_SetString(PyExc_TypeError, "unexpected type");
return -1;
}
if ((ret = PyObject_IsTrue(obj)) < 0)
return ret;
*val = ret > 0;
return 0;
}
PyObject *
libvirt_virDomainPtrWrap(virDomainPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virDomainPtr", NULL);
return ret;
}
PyObject *
libvirt_virNetworkPtrWrap(virNetworkPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virNetworkPtr", NULL);
return ret;
}
PyObject *
libvirt_virInterfacePtrWrap(virInterfacePtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virInterfacePtr", NULL);
return ret;
}
PyObject *
libvirt_virStoragePoolPtrWrap(virStoragePoolPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virStoragePoolPtr", NULL);
return ret;
}
PyObject *
libvirt_virStorageVolPtrWrap(virStorageVolPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virStorageVolPtr", NULL);
return ret;
}
PyObject *
libvirt_virConnectPtrWrap(virConnectPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virConnectPtr", NULL);
return ret;
}
PyObject *
libvirt_virNodeDevicePtrWrap(virNodeDevicePtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virNodeDevicePtr", NULL);
return ret;
}
PyObject *
libvirt_virSecretPtrWrap(virSecretPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virSecretPtr", NULL);
return ret;
}
PyObject *
libvirt_virNWFilterPtrWrap(virNWFilterPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virNWFilterPtr", NULL);
return ret;
}
PyObject *
libvirt_virStreamPtrWrap(virStreamPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virStreamPtr", NULL);
return ret;
}
PyObject *
libvirt_virDomainSnapshotPtrWrap(virDomainSnapshotPtr node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virDomainSnapshotPtr", NULL);
return ret;
}
PyObject *
libvirt_virEventHandleCallbackWrap(virEventHandleCallback node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
printf("%s: WARNING - Wrapping None\n", __func__);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virEventHandleCallback", NULL);
return ret;
}
PyObject *
libvirt_virEventTimeoutCallbackWrap(virEventTimeoutCallback node)
{
PyObject *ret;
if (node == NULL) {
printf("%s: WARNING - Wrapping None\n", __func__);
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virEventTimeoutCallback", NULL);
return ret;
}
PyObject *
libvirt_virFreeCallbackWrap(virFreeCallback node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "virFreeCallback", NULL);
return ret;
}
PyObject *
libvirt_virVoidPtrWrap(void* node)
{
PyObject *ret;
if (node == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
ret = libvirt_buildPyObject(node, "void*", NULL);
return ret;
}