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