Modules/hashlib.h

   1 /* Common code for use by all hashlib related modules. */
   2
   3 /*
   4  * Given a PyObject* obj, fill in the Py_buffer* viewp with the result
   5  * of PyObject_GetBuffer.  Sets and exception and issues a returns
   6  * on any errors.
   7  */
   8 #define GET_BUFFER_VIEW_OR_ERROUT(obj, viewp, error_return) do { \
   9         if (PyUnicode_Check((obj))) { \
  10             PyErr_SetString(PyExc_TypeError, \
  11                             "Unicode-objects must be encoded before hashing");\
  12             return error_return; \
  13         } \
  14         if (!PyObject_CheckBuffer((obj))) { \
  15             PyErr_SetString(PyExc_TypeError, \
  16                             "object supporting the buffer API required"); \
  17             return error_return; \
  18         } \
  19         if (PyObject_GetBuffer((obj), (viewp), PyBUF_SIMPLE) == -1) { \
  20             return error_return; \
  21         } \
  22         if ((viewp)->ndim > 1) { \
  23             PyErr_SetString(PyExc_BufferError, \
  24                             "Buffer must be single dimension"); \
  25             PyBuffer_Release((viewp)); \
  26             return error_return; \
  27         } \
  28     } while(0);