_dbus_bindings/exceptions.c

   1 /* D-Bus exception base classes.
   2  *
   3  * Copyright (C) 2006 Collabora Ltd.
   4  *
   5  * Licensed under the Academic Free License version 2.1
   6  *
   7  * This library is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU Lesser General Public License as published by
   9  * the Free Software Foundation; either version 2.1 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public License
  18  * along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  */
  22
  23 #include "dbus_bindings-internal.h"
  24
  25 static PyObject *imported_dbus_exception = NULL;
  26
  27 static dbus_bool_t
  28 import_exception(void)
  29 {
  30     PyObject *name;
  31     PyObject *exceptions;
  32
  33     if (imported_dbus_exception != NULL) {
  34         return TRUE;
  35     }
  36
  37     name = PyString_FromString("dbus.exceptions");
  38     if (name == NULL) {
  39         return FALSE;
  40     }
  41     exceptions = PyImport_Import(name);
  42     Py_DECREF(name);
  43     if (exceptions == NULL) {
  44         return FALSE;
  45     }
  46     imported_dbus_exception = PyObject_GetAttrString(exceptions,
  47                                                      "DBusException");
  48     Py_DECREF(exceptions);
  49
  50     return (imported_dbus_exception != NULL);
  51 }
  52
  53 PyObject *
  54 DBusPyException_SetString(const char *msg)
  55 {
  56     if (imported_dbus_exception != NULL || import_exception()) {
  57         PyErr_SetString(imported_dbus_exception, msg);
  58     }
  59     return NULL;
  60 }
  61
  62 PyObject *
  63 DBusPyException_ConsumeError(DBusError *error)
  64 {
  65     PyObject *exc_value = NULL;
  66
  67     if (imported_dbus_exception == NULL && !import_exception()) {
  68         goto finally;
  69     }
  70
  71     exc_value = PyObject_CallFunction(imported_dbus_exception,
  72                                       "s",
  73                                       error->message ? error->message
  74                                                      : "");
  75     if (error->name) {
  76         PyObject *name = PyString_FromString(error->name);
  77         int ret;
  78
  79         if (!name)
  80             goto finally;
  81         ret = PyObject_SetAttrString(exc_value, "_dbus_error_name", name);
  82         Py_DECREF(name);
  83         if (ret < 0) {
  84             goto finally;
  85         }
  86     }
  87
  88     PyErr_SetObject(imported_dbus_exception, exc_value);
  89
  90 finally:
  91     Py_XDECREF(exc_value);
  92     dbus_error_free(error);
  93     return NULL;
  94 }
  95
  96 /* vim:set ft=c cino< sw=4 sts=4 et: */