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Diffstat (limited to 'glib/pyglib.c')
| -rw-r--r-- | glib/pyglib.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/glib/pyglib.c b/glib/pyglib.c new file mode 100644 index 0000000..bdc3d67 --- /dev/null +++ b/glib/pyglib.c @@ -0,0 +1,180 @@ +/* -*- Mode: C; c-set-style: python; c-basic-offset: 4 -*- + * pyglib - Python bindings for GLib toolkit. + * Copyright (C) 1998-2003 James Henstridge + * 2004-2008 Johan Dahlin + * + * 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. + * + * 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 + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <Python.h> +#include <pythread.h> +#include "pyglib.h" +#include "pyglib-private.h" + +static struct _PyGLib_Functions *_PyGLib_API; +static int pyglib_thread_state_tls_key; + +void +pyglib_init(void) +{ + PyObject *glib, *cobject; + + glib = PyImport_ImportModule("glib"); + if (!glib) { + if (PyErr_Occurred()) { + PyObject *type, *value, *traceback; + PyObject *py_orig_exc; + PyErr_Fetch(&type, &value, &traceback); + py_orig_exc = PyObject_Repr(value); + Py_XDECREF(type); + Py_XDECREF(value); + Py_XDECREF(traceback); + PyErr_Format(PyExc_ImportError, + "could not import glib (error was: %s)", + PyString_AsString(py_orig_exc)); + Py_DECREF(py_orig_exc); + } else + PyErr_SetString(PyExc_ImportError, + "could not import glib (no error given)"); + } + + cobject = PyObject_GetAttrString(glib, "_PyGLib_API"); + if (cobject && PyCObject_Check(cobject)) + _PyGLib_API = (struct _PyGLib_Functions *) PyCObject_AsVoidPtr(cobject); + else { + PyErr_SetString(PyExc_ImportError, + "could not import glib (could not find _PyGLib_API object)"); + Py_DECREF(glib); + } +} + +void +pyglib_init_internal(PyObject *api) +{ + _PyGLib_API = (struct _PyGLib_Functions *) PyCObject_AsVoidPtr(api); +} + +PyGILState_STATE +pyglib_gil_state_ensure(void) +{ + if (!_PyGLib_API->threads_enabled) + return PyGILState_LOCKED; + + return PyGILState_Ensure(); +} + +void +pyglib_gil_state_release(PyGILState_STATE state) +{ + if (!_PyGLib_API->threads_enabled) + return; + + PyGILState_Release(state); +} + +#ifdef DISABLE_THREADING +gboolean +pyglib_enable_threads(void) +{ + PyErr_SetString(PyExc_RuntimeError, + "pyglib threading disabled at compile time"); + return FALSE; +} +#else +gboolean +pyglib_enable_threads(void) +{ + if (_PyGLib_API->threads_enabled) + return TRUE; + + PyEval_InitThreads(); + if (!g_threads_got_initialized) + g_thread_init(NULL); + + _PyGLib_API->threads_enabled = TRUE; + pyglib_thread_state_tls_key = PyThread_create_key(); + + return TRUE; +} +#endif + +int +pyglib_gil_state_ensure_py23 (void) +{ + return PyGILState_Ensure(); +} + +void +pyglib_gil_state_release_py23 (int flag) +{ + PyGILState_Release(flag); +} + + +/** + * pyglib_error_check: + * @error: a pointer to the GError. + * + * Checks to see if the GError has been set. If the error has been + * set, then the glib.GError Python exception will be raised, and + * the GError cleared. + * + * Returns: True if an error was set. + */ +gboolean +pyglib_error_check(GError **error) +{ + PyGILState_STATE state; + PyObject *exc_instance; + PyObject *d; + + g_return_val_if_fail(error != NULL, FALSE); + + if (*error == NULL) + return FALSE; + + state = pyglib_gil_state_ensure(); + + exc_instance = PyObject_CallFunction(_PyGLib_API->gerror_exception, "z", + (*error)->message); + PyObject_SetAttrString(exc_instance, "domain", + d=PyString_FromString(g_quark_to_string((*error)->domain))); + Py_DECREF(d); + + PyObject_SetAttrString(exc_instance, "code", + d=PyInt_FromLong((*error)->code)); + Py_DECREF(d); + + if ((*error)->message) { + PyObject_SetAttrString(exc_instance, "message", + d=PyString_FromString((*error)->message)); + Py_DECREF(d); + } else { + PyObject_SetAttrString(exc_instance, "message", Py_None); + } + + PyErr_SetObject(_PyGLib_API->gerror_exception, exc_instance); + Py_DECREF(exc_instance); + g_clear_error(error); + + pyglib_gil_state_release(state); + + return TRUE; +} |