/*
 *
 *  Copyright (C) 2010 MeVis Medical Solutions AG All Rights Reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  Further, this software is distributed without any warranty that it is
 *  free of the rightful claim of any third person regarding infringement
 *  or the like.  Any license provided herein, whether implied or
 *  otherwise, applies only to this software file.  Patent licenses, if
 *  any, provided herein do not apply to combinations of this program with
 *  other software, or any other product whatsoever.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact information: MeVis Medical Solutions AG, Universitaetsallee 29,
 *  28359 Bremen, Germany or:
 *
 *  http://www.mevis.de
 *
 */

//----------------------------------------------------------------------------------
/*!
// \file    PythonQtStdOut.cpp
// \author  Florian Link
// \author  Last changed by $Author: florian $
// \date    2006-05
*/
//----------------------------------------------------------------------------------

#include "PythonQtStdOut.h"

static PyObject* PythonQtStdOutRedirect_new(PyTypeObject* type, PyObject* /*args*/, PyObject* /*kwds*/)
{
  PythonQtStdOutRedirect* self;
  self = (PythonQtStdOutRedirect*)type->tp_alloc(type, 0);

  self->softspace = 0;
  self->closed = false;
  self->_cb = nullptr;

  return (PyObject*)self;
}

static PyObject* PythonQtStdOutRedirect_write(PyObject* self, PyObject* args)
{
  PythonQtStdOutRedirect* s = (PythonQtStdOutRedirect*)self;
  if (s->_cb) {
    QString output;
    if (PyTuple_GET_SIZE(args) >= 1) {
      PyObject* obj = PyTuple_GET_ITEM(args, 0);
      if (PyUnicode_Check(obj)) {
        output = QString::fromUtf8(PyUnicode_AsUTF8(obj));
      } else {
        char* string;
        if (!PyArg_ParseTuple(args, "s", &string)) {
          return nullptr;
        }
        output = QString::fromUtf8(string);
      }
    }

    if (s->softspace > 0) {
      (*s->_cb)(QString(""));
      s->softspace = 0;
    }

    (*s->_cb)(output);
  }
  return Py_BuildValue("");
}

static PyObject* PythonQtStdOutRedirect_flush(PyObject* /*self*/, PyObject* /*args*/)
{
  return Py_BuildValue("");
}

static PyObject* PythonQtStdOutRedirect_isatty(PyObject* /*self*/, PyObject* /*args*/)
{
  Py_RETURN_FALSE;
}

static PyMethodDef PythonQtStdOutRedirect_methods[] = {
  {"write", (PyCFunction)PythonQtStdOutRedirect_write, METH_VARARGS, "redirect the writing to a callback"},
  {"flush", (PyCFunction)PythonQtStdOutRedirect_flush, METH_VARARGS,
    "flush the output, currently not implemented but needed for logging framework"},
  {"isatty", (PyCFunction)PythonQtStdOutRedirect_isatty, METH_NOARGS,
    "return False since this object is not a tty-like device. Needed for logging framework"},
  {nullptr, nullptr, 0, nullptr} /* sentinel */
};

static PyMemberDef PythonQtStdOutRedirect_members[] = {
  {const_cast<char*>("softspace"), T_INT, offsetof(PythonQtStdOutRedirect, softspace), 0,
    const_cast<char*>("soft space flag")},
  {const_cast<char*>("closed"), T_BOOL, offsetof(PythonQtStdOutRedirect, closed), 0,
    const_cast<char*>("soft space flag")},
  {nullptr} /* Sentinel */
};

PyTypeObject PythonQtStdOutRedirectType = {
  PyVarObject_HEAD_INIT(nullptr, 0)         /*tp_base*/
  "PythonQtStdOutRedirect",                 /*tp_name*/
  sizeof(PythonQtStdOutRedirect),           /*tp_basicsize*/
  0,                                        /*tp_itemsize*/
  nullptr,                                  /*tp_dealloc*/
  0,                                        /*tp_vectorcall_offset*/
  nullptr,                                  /*tp_getattr*/
  nullptr,                                  /*tp_setattr*/
  nullptr,                                  /*tp_compare*/
  nullptr,                                  /*tp_repr*/
  nullptr,                                  /*tp_as_number*/
  nullptr,                                  /*tp_as_sequence*/
  nullptr,                                  /*tp_as_mapping*/
  nullptr,                                  /*tp_hash */
  nullptr,                                  /*tp_call*/
  nullptr,                                  /*tp_str*/
  nullptr,                                  /*tp_getattro*/
  nullptr,                                  /*tp_setattro*/
  nullptr,                                  /*tp_as_buffer*/
  Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
  "PythonQtStdOutRedirect",                 /* tp_doc */
  nullptr,                                  /* tp_traverse */
  nullptr,                                  /* tp_clear */
  nullptr,                                  /* tp_richcompare */
  0,                                        /* tp_weaklistoffset */
  nullptr,                                  /* tp_iter */
  nullptr,                                  /* tp_iternext */
  PythonQtStdOutRedirect_methods,           /* tp_methods */
  PythonQtStdOutRedirect_members,           /* tp_members */
  nullptr,                                  /* tp_getset */
  nullptr,                                  /* tp_base */
  nullptr,                                  /* tp_dict */
  nullptr,                                  /* tp_descr_get */
  nullptr,                                  /* tp_descr_set */
  0,                                        /* tp_dictoffset */
  nullptr,                                  /* tp_init */
  nullptr,                                  /* tp_alloc */
  PythonQtStdOutRedirect_new,               /* tp_new */
};
