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/* Common code for use by all hashlib related modules. */
/*
* Given a PyObject* obj, fill in the Py_buffer* viewp with the result
* of PyObject_GetBuffer. Sets an exception and issues a return NULL
* on any errors.
*/
#define GET_BUFFER_VIEW_OR_ERROUT(obj, viewp) do { \
if (PyUnicode_Check((obj))) { \
PyErr_SetString(PyExc_TypeError, \
"Unicode-objects must be encoded before hashing");\
return NULL; \
} \
if (!PyObject_CheckBuffer((obj))) { \
PyErr_SetString(PyExc_TypeError, \
"object supporting the buffer API required"); \
return NULL; \
} \
if (PyObject_GetBuffer((obj), (viewp), PyBUF_SIMPLE) == -1) { \
return NULL; \
} \
if ((viewp)->ndim > 1) { \
PyErr_SetString(PyExc_BufferError, \
"Buffer must be single dimension"); \
PyBuffer_Release((viewp)); \
return NULL; \
} \
} while(0);
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