// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// Mobius Forensic Toolkit
// Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022 Eduardo Aguiar
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
// Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \file stream.cc C++ API <i>mobius.io.stream</i> class wrapper
//! \author Eduardo Aguiar
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#include <pymobius.h>
#include "stream.h"
#include <mobius/exception.inc>
#include <stdexcept>
#include "io/reader.h"

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Check if value is an instance of <i>stream</i>
//! \param value Python value
//! \return true/false
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
bool
pymobius_io_stream_check (PyObject *value)
{
  return PyObject_IsInstance (value, reinterpret_cast<PyObject *> (&io_stream_t));
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create <i>stream</i> Python object from C++ object
//! \param obj C++ object
//! \return New stream object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyObject *
pymobius_io_stream_to_pyobject (const mobius::io::stream& obj)
{
  PyObject *ret = nullptr;

  if (obj)
    {
      ret = _PyObject_New (&io_stream_t);

      if (ret)
        ((io_stream_o *) ret)->obj = new mobius::io::stream (obj);
    }
  else
    {
      ret = mobius::py::pynone ();
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create <i>stream</i> C++ object from Python object
//! \param value Python value
//! \return Stream object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
mobius::io::stream
pymobius_io_stream_from_pyobject (PyObject *value)
{
  if (!pymobius_io_stream_check (value))
    throw std::invalid_argument (mobius::MOBIUS_EXCEPTION_MSG ("object must be an instance of mobius.io.stream"));

  return * (reinterpret_cast <io_stream_o *>(value)->obj);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>size</i> Attribute getter
//! \param self Object
//! \return <i>size</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_size (io_stream_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pylong_from_std_uint64_t (self->obj->get_size ());
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>type</i> Attribute getter
//! \param self Object
//! \return <i>type</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_type (io_stream_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pylong_from_int (self->obj->get_type ());
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>name</i> Attribute getter
//! \param self Object
//! \return <i>name</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_name (io_stream_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pystring_from_std_string (self->obj->get_name ());
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Getters and setters structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyGetSetDef tp_getset[] =
{
  {
    (char *) "size",
    (getter) tp_getter_size,
    (setter) 0,
    (char *) "Stream size",
    NULL
  },
  {
    (char *) "type",
    (getter) tp_getter_type,
    (setter) 0,
    (char *) "Type",
    NULL
  },
  {
    (char *) "name",
    (getter) tp_getter_name,
    (setter) 0,
    (char *) "Name",
    NULL
  },
  {NULL, NULL, NULL, NULL, NULL} // sentinel
};

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>new_reader</i> method implementation
//! \param self Object
//! \param args Argument list
//! \return Reader object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_new_reader (io_stream_o *self, PyObject *)
{
  // Execute C++ function
  PyObject *ret = nullptr;

  try
    {
      ret = pymobius_io_reader_to_pyobject (self->obj->new_reader ());
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  // Return value
  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Methods structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyMethodDef tp_methods[] =
{
  {
    (char *) "new_reader",
    (PyCFunction) tp_f_new_reader,
    METH_VARARGS,
    "Create new reader"
  },
  {NULL, NULL, 0, NULL} // sentinel
};

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>stream</i> deallocator
//! \param self Object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static void
tp_dealloc (io_stream_o *self)
{
  delete self->obj;
  self->ob_type->tp_free ((PyObject*) self);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Type structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyTypeObject io_stream_t =
{
  PyVarObject_HEAD_INIT (NULL, 0)
  "mobius.io.stream",                      		// tp_name
  sizeof (io_stream_o),                    		// tp_basicsize
  0,                                       		// tp_itemsize
  (destructor) tp_dealloc,                 		// tp_dealloc
  0,                                       		// tp_print
  0,                                       		// tp_getattr
  0,                                       		// tp_setattr
  0,                                       		// tp_compare
  0,                                       		// tp_repr
  0,                                       		// tp_as_number
  0,                                       		// tp_as_sequence
  0,                                       		// tp_as_mapping
  0,                                       		// tp_hash
  0,                                       		// tp_call
  0,                                       		// tp_str
  0,                                       		// tp_getattro
  0,                                       		// tp_setattro
  0,                                       		// tp_as_buffer
  Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,		// tp_flags
  "stream class",                          		// tp_doc
  0,                                       		// tp_traverse
  0,                                       		// tp_clear
  0,                                       		// tp_richcompare
  0,                                       		// tp_weaklistoffset
  0,                                       		// tp_iter
  0,                                       		// tp_iternext
  tp_methods,                              		// tp_methods
  0,                                       		// tp_members
  tp_getset,                               		// tp_getset
  0,                                       		// tp_base
  0,                                       		// tp_dict
  0,                                       		// tp_descr_get
  0,                                       		// tp_descr_set
  0,                                       		// tp_dictoffset
  0,                                       		// tp_init
  0,                                       		// tp_alloc
  0,                                       		// tp_new
  0,                                       		// tp_free
  0,                                       		// tp_is_gc
  0,                                       		// tp_bases
  0,                                       		// tp_mro
  0,                                       		// tp_cache
  0,                                       		// tp_subclasses
  0,                                       		// tp_weaklist
  0,                                       		// tp_del
  0,                                       		// tp_version_tag
};
