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// c 程序 段
static PyObject *gc_before_extract = NULL;
/// 设置回调
static PyObject *
SetBeforeCallbackFn(PyObject *dummy,PyObject *args)
{
PyObject *temp = NULL;
if (PyArg_ParseTuple(args,”O:set_callback”,&temp)) {
if (!PyCallable_Check(temp)) {
PyErr_SetString(PyExc_TypeError,”parameter must be callable”);
}
Py_XINCREF(temp); /* Add a reference to new callback */
Py_XDECREF(gc_before_extract); /* Dispose of previous callback */
gc_before_extract = temp; /* Remember new callback */
}
return Py_BuildValue(“l”,(gc_before_extract == NULL) ? 0 : 1);
}
/// 调用上面函数设置的python脚本函数
int BeforeExt(char *pBeforeExtract)
{
PyObject* pArgs = NULL;
PyObject* pRetVal = NULL;
int nRetVal = 0;
pArgs = Py_BuildValue(“(s)”,pFileName);
pRetVal = PyEval_CallObject(gc_before_extract,pArgs);
if (pRetVal)
{
fprintf(stderr,”PyEval_CallObject : ok \r\n”);
nRetVal = PyInt_AsLong(pRetVal);
fprintf(stderr,”PyEval_CallObject : return : %d \r\n”,nRetVal);
}
Py_DECREF(pArgs);
Py_DECREF(pRetVal);
return nRetVal;
}
/// 测试函数
static
PyObject* my_test_callback(PyObject *self,PyObject *args)
{
PyObject * arglist;
PyObject * result = NULL;
BeforeExt(“good”);
result = PyEval_CallObject(gc_before_extract,args);
if (result)
{
Py_DECREF(result);
}
Py_INCREF(Py_None);
return Py_None;
}
/// python 脚本
from pyArchive import *
from ctypes import *
# 回调函数必须有一个int型的返回值
def set_callback_fn(abc) :
print “t_callback_fn say : {0}”.format(abc)
return 11
CMPFUNC = CFUNCTYPE(c_int,c_char_p)
_callback = CMPFUNC(set_callback_fn)
if SetBeforeCallbackFn(_callback):
print “set call back ok”
my_test_callback(“script call : good luck”)
else :
print “set call back fail”
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