src/bindings/python/bt2/bt2/native_bt_message_iterator.i.h

   1 /*
   2  * The MIT License (MIT)
   3  *
   4  * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 static
  26 bt_message_iterator_create_from_message_iterator_status
  27 bt_bt2_message_iterator_create_from_message_iterator(
  28                 bt_self_message_iterator *self_msg_iter,
  29                 bt_self_component_port_input *input_port,
  30                 bt_message_iterator **message_iterator)
  31 {
  32         bt_message_iterator_create_from_message_iterator_status
  33                 status;
  34
  35         status = bt_message_iterator_create_from_message_iterator(
  36                 self_msg_iter, input_port, message_iterator);
  37
  38         if (status != BT_MESSAGE_ITERATOR_CREATE_FROM_MESSAGE_ITERATOR_STATUS_OK) {
  39                 *message_iterator = NULL;
  40         }
  41
  42         return status;
  43 }
  44
  45 static
  46 bt_message_iterator_create_from_sink_component_status
  47 bt_bt2_message_iterator_create_from_sink_component(
  48                 bt_self_component_sink *self_comp,
  49                 bt_self_component_port_input *input_port,
  50                 bt_message_iterator **message_iterator)
  51 {
  52         bt_message_iterator_create_from_sink_component_status
  53                 status;
  54
  55         status = bt_message_iterator_create_from_sink_component(
  56                 self_comp, input_port, message_iterator);
  57
  58         if (status != BT_MESSAGE_ITERATOR_CREATE_FROM_SINK_COMPONENT_STATUS_OK) {
  59                 *message_iterator = NULL;
  60         }
  61
  62         return status;
  63 }
  64
  65 static PyObject *bt_bt2_get_user_component_from_user_msg_iter(
  66                 bt_self_message_iterator *self_message_iterator)
  67 {
  68         bt_self_component *self_component = bt_self_message_iterator_borrow_component(self_message_iterator);
  69         PyObject *py_comp;
  70
  71         BT_ASSERT_DBG(self_component);
  72         py_comp = bt_self_component_get_data(self_component);
  73         BT_ASSERT_DBG(py_comp);
  74
  75         /* Return new reference */
  76         Py_INCREF(py_comp);
  77         return py_comp;
  78 }
  79
  80 static inline
  81 PyObject *create_pylist_from_messages(bt_message_array_const messages,
  82                 uint64_t message_count)
  83 {
  84         uint64_t i;
  85         PyObject *py_msg_list = PyList_New(message_count);
  86
  87         BT_ASSERT(py_msg_list);
  88
  89         for (i = 0; i < message_count; i++) {
  90                 PyList_SET_ITEM(py_msg_list, i,
  91                                 SWIG_NewPointerObj(SWIG_as_voidptr(messages[i]),
  92                                         SWIGTYPE_p_bt_message, 0));
  93         }
  94
  95         return py_msg_list;
  96 }
  97
  98 static
  99 PyObject *get_msg_range_common(bt_message_iterator_next_status status,
 100                 bt_message_array_const messages, uint64_t message_count)
 101 {
 102         PyObject *py_status;
 103         PyObject *py_return_tuple;
 104         PyObject *py_msg_list;
 105
 106         py_return_tuple = PyTuple_New(2);
 107         BT_ASSERT(py_return_tuple);
 108
 109         /* Set tuple[0], status. */
 110         py_status = SWIG_From_long_SS_long(status);
 111         PyTuple_SET_ITEM(py_return_tuple, 0, py_status);
 112
 113         /* Set tuple[1], message list on success, None otherwise. */
 114         if (status == __BT_FUNC_STATUS_OK) {
 115                 py_msg_list = create_pylist_from_messages(messages, message_count);
 116         } else {
 117                 py_msg_list = Py_None;
 118                 Py_INCREF(py_msg_list);
 119         }
 120
 121         PyTuple_SET_ITEM(py_return_tuple, 1, py_msg_list);
 122
 123         return py_return_tuple;
 124 }
 125
 126 static PyObject *bt_bt2_self_component_port_input_get_msg_range(
 127                 bt_message_iterator *iter)
 128 {
 129         bt_message_array_const messages;
 130         uint64_t message_count = 0;
 131         bt_message_iterator_next_status status;
 132
 133         status = bt_message_iterator_next(iter,
 134                 &messages, &message_count);
 135         return get_msg_range_common(status, messages, message_count);
 136 }