xlnt/arrow/xlntpyarrow/xlntpyarrow.cpp

110 lines
2.7 KiB
C++

#include <iostream>
#include <memory>
#include <vector>
#include <xlntarrow.hpp>
#include <python_streambuf.hpp>
#include <Python.h>
PyObject *xlsx2arrow(PyObject *file)
{
xlnt::arrow::streambuf buffer(file);
std::istream stream(&buffer);
std::shared_ptr<arrow::Schema> schema;
std::vector<std::shared_ptr<arrow::Column>> columns;
arrow::Table table(schema, columns);
xlnt::arrow::xlsx2arrow(stream, table);
Py_RETURN_NONE;
}
extern "C" {
/*
* Implements XLSX->pyarrow table function.
*/
PyDoc_STRVAR(xlntpyarrow_xlsx2arrow_doc, "xlsx2arrow(in_file)\
\
Returns an arrow table representing the given XLSX file object.");
PyObject *xlntpyarrow_xlsx2arrow(PyObject *self, PyObject *args, PyObject *kwargs)
{
PyObject *file = nullptr;
static const char *keywords[] = { "file", nullptr };
static auto keywords_nc = const_cast<char **>(keywords);
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O", keywords_nc, &file))
{
return nullptr;
}
return xlsx2arrow(file);
}
/*
* Implements pyarrow table->XLSX function.
*/
PyDoc_STRVAR(xlntpyarrow_arrow2xlsx_doc, "arrow2xlsx(table, out_file)\
\
Writes the given arrow table to out_file as an XLSX file.");
PyObject *xlntpyarrow_arrow2xlsx(PyObject *self, PyObject *args, PyObject *kwargs)
{
PyObject *obj = nullptr;
static const char *keywords[] = { "file", nullptr };
static auto keywords_nc = const_cast<char **>(keywords);
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Oi", keywords_nc, &obj))
{
return nullptr;
}
Py_RETURN_NONE;
}
static PyMethodDef xlntpyarrow_functions[] =
{
{ "xlsx2arrow", (PyCFunction)xlntpyarrow_xlsx2arrow, METH_VARARGS | METH_KEYWORDS, xlntpyarrow_xlsx2arrow_doc },
{ "arrow2xlsx", (PyCFunction)xlntpyarrow_arrow2xlsx, METH_VARARGS | METH_KEYWORDS, xlntpyarrow_arrow2xlsx_doc },
{ nullptr, nullptr, 0, nullptr }
};
int exec_xlntpyarrow(PyObject *module)
{
PyModule_AddFunctions(module, xlntpyarrow_functions);
PyModule_AddStringConstant(module, "__author__", "Thomas Fussell");
PyModule_AddStringConstant(module, "__version__", "0.9.0");
PyModule_AddIntConstant(module, "year", 2017);
return 0;
}
PyDoc_STRVAR(xlntpyarrow_doc, "The xlntpyarrow module");
static PyModuleDef_Slot xlntpyarrow_slots[] =
{
{ Py_mod_exec, (void *)exec_xlntpyarrow },
{ 0, nullptr }
};
static PyModuleDef xlntpyarrow_def =
{
PyModuleDef_HEAD_INIT,
"xlntpyarrow",
xlntpyarrow_doc,
0, /* m_size */
nullptr, /* m_methods */
xlntpyarrow_slots,
nullptr, /* m_traverse */
nullptr, /* m_clear */
nullptr, /* m_free */
};
PyMODINIT_FUNC PyInit_xlntpyarrow()
{
return PyModuleDef_Init(&xlntpyarrow_def);
}
} // extern "C"