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Allow dialect-describing keywords to be supplied to register_dialect, 

record objects of internal dialect type, rather than instances of
python objects.
This commit is contained in:
Andrew McNamara 2005-01-11 01:28:33 +00:00
parent 91b97463cd
commit 86625972a1
2 changed files with 21 additions and 28 deletions
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11
Lib/test/test_csv.py
View File

@ -272,13 +272,22 @@ class TestDialectRegistry(unittest.TestCase):
expected_dialects.sort()
csv.register_dialect(name, myexceltsv)
try:
self.failUnless(isinstance(csv.get_dialect(name), myexceltsv))
self.failUnless(csv.get_dialect(name).delimiter, '\t')
got_dialects = csv.list_dialects()
got_dialects.sort()
self.assertEqual(expected_dialects, got_dialects)
finally:
csv.unregister_dialect(name)
def test_register_kwargs(self):
name = 'fedcba'
csv.register_dialect(name, delimiter=';')
try:
self.failUnless(csv.get_dialect(name).delimiter, '\t')
self.failUnless(list(csv.reader('X;Y;Z', name)), ['X', 'Y', 'Z'])
finally:
csv.unregister_dialect(name)
def test_incomplete_dialect(self):
class myexceltsv(csv.Dialect):
delimiter = "\t"

38
Modules/_csv.c
View File

@ -1368,42 +1368,26 @@ csv_list_dialects(PyObject *module, PyObject *args)
}
static PyObject *
csv_register_dialect(PyObject *module, PyObject *args)
csv_register_dialect(PyObject *module, PyObject *args, PyObject *kwargs)
{
PyObject *name_obj, *dialect_obj;
PyObject *name_obj, *dialect_obj = NULL;
PyObject *dialect;
if (!PyArg_UnpackTuple(args, "", 2, 2, &name_obj, &dialect_obj))
if (!PyArg_UnpackTuple(args, "", 1, 2, &name_obj, &dialect_obj))
return NULL;
if (!IS_BASESTRING(name_obj)) {
PyErr_SetString(PyExc_TypeError,
"dialect name must be a string or unicode");
return NULL;
}
Py_INCREF(dialect_obj);
/* A class rather than an instance? Instantiate */
if (PyObject_TypeCheck(dialect_obj, &PyClass_Type)) {
PyObject * new_dia;
new_dia = PyObject_CallFunction(dialect_obj, "");
Py_DECREF(dialect_obj);
if (new_dia == NULL)
return NULL;
dialect_obj = new_dia;
}
/* Make sure we finally have an instance */
if (!PyInstance_Check(dialect_obj)) {
PyErr_SetString(PyExc_TypeError, "dialect must be an instance");
Py_DECREF(dialect_obj);
dialect = _call_dialect(dialect_obj, kwargs);
if (dialect == NULL)
return NULL;
if (PyDict_SetItem(dialects, name_obj, dialect) < 0) {
Py_DECREF(dialect);
return NULL;
}
if (PyObject_SetAttrString(dialect_obj, "_name", name_obj) < 0) {
Py_DECREF(dialect_obj);
return NULL;
}
if (PyDict_SetItem(dialects, name_obj, dialect_obj) < 0) {
Py_DECREF(dialect_obj);
return NULL;
}
Py_DECREF(dialect_obj);
Py_DECREF(dialect);
Py_INCREF(Py_None);
return Py_None;
}
@ -1538,7 +1522,7 @@ static struct PyMethodDef csv_methods[] = {
{ "list_dialects", (PyCFunction)csv_list_dialects,
METH_NOARGS, csv_list_dialects_doc},
{ "register_dialect", (PyCFunction)csv_register_dialect,
METH_VARARGS, csv_register_dialect_doc},
METH_VARARGS | METH_KEYWORDS, csv_register_dialect_doc},
{ "unregister_dialect", (PyCFunction)csv_unregister_dialect,
METH_O, csv_unregister_dialect_doc},
{ "get_dialect", (PyCFunction)csv_get_dialect,