bindings/python/bt2/native_btplugin.i

   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 %{
  26 #include <babeltrace/plugin/plugin.h>
  27 #include <assert.h>
  28 %}
  29
  30 /* Types */
  31 struct bt_plugin;
  32
  33 /* Status */
  34 enum bt_plugin_status {
  35         BT_PLUGIN_STATUS_OK =           0,
  36         BT_PLUGIN_STATUS_ERROR =        -1,
  37         BT_PLUGIN_STATUS_NOMEM =        -4,
  38 };
  39
  40 /* Functions */
  41 const char *bt_plugin_get_name(struct bt_plugin *plugin);
  42 const char *bt_plugin_get_author(struct bt_plugin *plugin);
  43 const char *bt_plugin_get_license(struct bt_plugin *plugin);
  44 const char *bt_plugin_get_description(struct bt_plugin *plugin);
  45 const char *bt_plugin_get_path(struct bt_plugin *plugin);
  46 enum bt_plugin_status bt_plugin_get_version(struct bt_plugin *plugin,
  47                 unsigned int *OUTPUT, unsigned int *OUTPUT, unsigned int *OUTPUT,
  48                 const char **BTOUTSTR);
  49 int bt_plugin_get_component_class_count(struct bt_plugin *plugin);
  50 struct bt_component_class *bt_plugin_get_component_class(
  51                 struct bt_plugin *plugin, size_t index);
  52 struct bt_component_class *bt_plugin_get_component_class_by_name_and_type(
  53                 struct bt_plugin *plugin, const char *name,
  54                 enum bt_component_class_type type);
  55
  56 %{
  57 static PyObject *bt_py3_plugin_ptrs_list_from_bt_plugins(struct bt_plugin **plugins)
  58 {
  59         PyObject *py_plugin_ptrs = NULL;
  60         struct bt_plugin **plugin_at;
  61
  62         if (!plugins) {
  63                 goto error;
  64         }
  65
  66         py_plugin_ptrs = PyList_New(0);
  67         if (!py_plugin_ptrs) {
  68                 goto error;
  69         }
  70
  71         plugin_at = plugins;
  72
  73         while (*plugin_at) {
  74                 struct bt_plugin *plugin = *plugin_at;
  75                 PyObject *py_plugin_ptr;
  76                 int ret;
  77
  78                 py_plugin_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(plugin),
  79                         SWIGTYPE_p_bt_plugin, 0);
  80                 if (!py_plugin_ptr) {
  81                         goto error;
  82                 }
  83
  84                 ret = PyList_Append(py_plugin_ptrs, py_plugin_ptr);
  85                 Py_DECREF(py_plugin_ptr);
  86                 if (ret < 0) {
  87                         goto error;
  88                 }
  89
  90                 plugin_at++;
  91         }
  92
  93         goto end;
  94
  95 error:
  96         Py_XDECREF(py_plugin_ptrs);
  97         py_plugin_ptrs = Py_None;
  98         Py_INCREF(py_plugin_ptrs);
  99
 100         if (plugins) {
 101                 /*
 102                  * Put existing plugin references since they are not
 103                  * moved to the caller.
 104                  */
 105                 plugin_at = plugins;
 106
 107                 while (*plugin_at) {
 108                         bt_put(*plugin_at);
 109                         plugin_at++;
 110                 }
 111         }
 112
 113 end:
 114         PyErr_Clear();
 115         free(plugins);
 116         return py_plugin_ptrs;
 117 }
 118
 119 static PyObject *bt_py3_plugin_create_all_from_file(const char *path)
 120 {
 121         return bt_py3_plugin_ptrs_list_from_bt_plugins(
 122                 bt_plugin_create_all_from_file(path));
 123 }
 124
 125 static PyObject *bt_py3_plugin_create_all_from_dir(const char *path,
 126                 bool recurse)
 127 {
 128         return bt_py3_plugin_ptrs_list_from_bt_plugins(
 129                 bt_plugin_create_all_from_dir(path, recurse));
 130 }
 131 %}
 132
 133 PyObject *bt_py3_plugin_create_all_from_file(const char *path);
 134 PyObject *bt_py3_plugin_create_all_from_dir(const char *path,
 135                 bool recurse);