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/* D-Bus Byte and ByteArray types.
*
* Copyright (C) 2006 Collabora Ltd. <http://www.collabora.co.uk/>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <Python.h>
#include <structmember.h>
#include <stdint.h>
#include "dbus_bindings-internal.h"
#include "types-internal.h"
PyDoc_STRVAR(Byte_tp_doc,
"An unsigned byte: a subtype of int, with range restricted to [0, 255].\n"
"\n"
"A Byte b may be converted to a str of length 1 via str(b) == chr(b).\n"
"\n"
"Most of the time you don't want to use this class - it mainly exists\n"
"for symmetry with the other D-Bus types. See `dbus.ByteArray` for a\n"
"better way to handle arrays of Byte.\n"
"\n"
"Constructor::\n"
"\n"
" dbus.Byte(integer or str of length 1[, variant_level])\n"
"\n"
"``variant_level`` must be non-negative; the default is 0.\n"
"\n"
":IVariables:\n"
" `variant_level` : int\n"
" Indicates how many nested Variant containers this object\n"
" is contained in: if a message's wire format has a variant containing a\n"
" variant containing a byte, this is represented in Python by a\n"
" Byte with variant_level==2.\n"
);
static PyObject *
Byte_new(PyTypeObject *cls, PyObject *args, PyObject *kwargs)
{
PyObject *obj;
PyObject *tuple;
long variantness = 0;
static char *argnames[] = {"variant_level", NULL};
if (PyTuple_Size(args) > 1) {
PyErr_SetString(PyExc_TypeError, "Byte constructor takes no more "
"than one positional argument");
return NULL;
}
if (!PyArg_ParseTupleAndKeywords(dbus_py_empty_tuple, kwargs,
"|l:__new__", argnames,
&variantness)) return NULL;
if (variantness < 0) {
PyErr_SetString(PyExc_ValueError,
"variant_level must be non-negative");
return NULL;
}
/* obj is only a borrowed ref for the moment */
obj = PyTuple_GetItem(args, 0);
if (PyString_Check(obj)) {
/* string of length 1, we hope */
if (PyString_GET_SIZE(obj) != 1) {
goto bad_arg;
}
obj = PyInt_FromLong((unsigned char)(PyString_AS_STRING(obj)[0]));
}
else if (PyInt_Check(obj)) {
long i = PyInt_AS_LONG(obj);
if (obj->ob_type == cls &&
((DBusPyIntBase *)obj)->variant_level == variantness) {
Py_INCREF(obj);
return obj;
}
if (i < 0 || i > 255) goto bad_range;
/* else make it a new reference */
Py_INCREF(obj);
}
else {
goto bad_arg;
}
tuple = Py_BuildValue("(O)", obj);
if (!tuple) return NULL;
Py_DECREF(obj);
obj = NULL;
obj = DBusPyIntBase_Type.tp_new(cls, tuple, kwargs);
Py_DECREF(tuple);
tuple = NULL;
return obj;
bad_arg:
PyErr_SetString(PyExc_TypeError, "Expected a string of length 1, "
"or an int in the range 0-255");
return NULL;
bad_range:
PyErr_SetString(PyExc_ValueError, "Integer outside range 0-255");
return NULL;
}
static PyObject *
Byte_tp_str(PyObject *self)
{
unsigned char str[2] = { (unsigned char)PyInt_AS_LONG(self), 0 };
return PyString_FromStringAndSize((char *)str, 1);
}
PyTypeObject DBusPyByte_Type = {
PyObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type))
0,
"dbus.Byte",
0,
0,
0, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
Byte_tp_str, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
Byte_tp_doc, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
DEFERRED_ADDRESS(&PyInt_Type), /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
Byte_new, /* tp_new */
};
PyDoc_STRVAR(ByteArray_tp_doc,
"ByteArray is a subtype of str which can be used when you want an\n"
"efficient immutable representation of a D-Bus byte array (signature 'ay').\n"
"\n"
"By default, when byte arrays are converted from D-Bus to Python, they\n"
"come out as a `dbus.Array` of `dbus.Byte`. This is just for symmetry with\n"
"the other D-Bus types - in practice, what you usually want is the byte\n"
"array represented as a string, using this class. To get this, pass the\n"
"``byte_arrays=True`` keyword argument to any of these methods:\n"
"\n"
"* any D-Bus method proxy, or ``connect_to_signal``, on the objects returned\n"
" by `Bus.get_object`\n"
"* any D-Bus method on a `dbus.Interface`\n"
"* `dbus.Interface.connect_to_signal`\n"
"* `Bus.add_signal_receiver`\n"
"\n"
"Import via::\n"
"\n"
" from dbus import ByteArray\n"
"\n"
"Constructor::\n"
"\n"
" ByteArray(str)\n"
);
PyTypeObject DBusPyByteArray_Type = {
PyObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type))
0,
"dbus.ByteArray",
0,
0,
0, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
ByteArray_tp_doc, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
DEFERRED_ADDRESS(&DBusPyStrBase_Type), /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
};
dbus_bool_t
dbus_py_init_byte_types(void)
{
DBusPyByte_Type.tp_base = &DBusPyIntBase_Type;
if (PyType_Ready(&DBusPyByte_Type) < 0) return 0;
DBusPyByte_Type.tp_print = NULL;
DBusPyByteArray_Type.tp_base = &DBusPyStrBase_Type;
if (PyType_Ready(&DBusPyByteArray_Type) < 0) return 0;
DBusPyByteArray_Type.tp_print = NULL;
return 1;
}
dbus_bool_t
dbus_py_insert_byte_types(PyObject *this_module)
{
Py_INCREF(&DBusPyByte_Type);
if (PyModule_AddObject(this_module, "Byte",
(PyObject *)&DBusPyByte_Type) < 0) return 0;
Py_INCREF(&DBusPyByteArray_Type);
if (PyModule_AddObject(this_module, "ByteArray",
(PyObject *)&DBusPyByteArray_Type) < 0) return 0;
return 1;
}
/* vim:set ft=c cino< sw=4 sts=4 et: */
|
