_dbus_bindings/exceptions.c

   1 /* D-Bus exception base classes.
   2  *
   3  * Copyright (C) 2006 Collabora Ltd. <http://www.collabora.co.uk/>
   4  *
   5  * Permission is hereby granted, free of charge, to any person
   6  * obtaining a copy of this software and associated documentation
   7  * files (the "Software"), to deal in the Software without
   8  * restriction, including without limitation the rights to use, copy,
   9  * modify, merge, publish, distribute, sublicense, and/or sell copies
  10  * 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
  14  * included in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  20  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include "dbus_bindings-internal.h"
  27
  28 static PyObject *imported_dbus_exception = NULL;
  29
  30 static dbus_bool_t
  31 import_exception(void)
  32 {
  33     PyObject *name;
  34     PyObject *exceptions;
  35
  36     if (imported_dbus_exception != NULL) {
  37         return TRUE;
  38     }
  39
  40     name = PyString_FromString("dbus.exceptions");
  41     if (name == NULL) {
  42         return FALSE;
  43     }
  44     exceptions = PyImport_Import(name);
  45     Py_DECREF(name);
  46     if (exceptions == NULL) {
  47         return FALSE;
  48     }
  49     imported_dbus_exception = PyObject_GetAttrString(exceptions,
  50                                                      "DBusException");
  51     Py_DECREF(exceptions);
  52
  53     return (imported_dbus_exception != NULL);
  54 }
  55
  56 PyObject *
  57 DBusPyException_SetString(const char *msg)
  58 {
  59     if (imported_dbus_exception != NULL || import_exception()) {
  60         PyErr_SetString(imported_dbus_exception, msg);
  61     }
  62     return NULL;
  63 }
  64
  65 PyObject *
  66 DBusPyException_ConsumeError(DBusError *error)
  67 {
  68     PyObject *exc_value = NULL;
  69
  70     if (imported_dbus_exception == NULL && !import_exception()) {
  71         goto finally;
  72     }
  73
  74     exc_value = PyObject_CallFunction(imported_dbus_exception,
  75                                       "s",
  76                                       error->message ? error->message
  77                                                      : "");
  78     if (error->name) {
  79         PyObject *name = PyString_FromString(error->name);
  80         int ret;
  81
  82         if (!name)
  83             goto finally;
  84         ret = PyObject_SetAttrString(exc_value, "_dbus_error_name", name);
  85         Py_DECREF(name);
  86         if (ret < 0) {
  87             goto finally;
  88         }
  89     }
  90
  91     PyErr_SetObject(imported_dbus_exception, exc_value);
  92
  93 finally:
  94     Py_XDECREF(exc_value);
  95     dbus_error_free(error);
  96     return NULL;
  97 }
  98
  99 /* vim:set ft=c cino< sw=4 sts=4 et: */