--- /dev/null
+/* adapter_list.c - python list objects
+ *
+ * Copyright (C) 2004-2005 Federico Di Gregorio <fog@debian.org>
+ *
+ * This file is part of psycopg.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <Python.h>
+#include <structmember.h>
+#include <stringobject.h>
+
+#define PSYCOPG_MODULE
+#include "psycopg/config.h"
+#include "psycopg/python.h"
+#include "psycopg/psycopg.h"
+#include "psycopg/adapter_list.h"
+#include "psycopg/microprotocols.h"
+#include "psycopg/microprotocols_proto.h"
+
+
+/* list_str, list_getquoted - return result of quoting */
+
+static PyObject *
+list_quote(listObject *self)
+{
+ /* adapt the list by calling adapt() recursively and then wrapping
+ everything into "ARRAY[]" */
+ PyObject *tmp = NULL, *str = NULL, *joined = NULL, *res = NULL;
+ int i, len;
+
+ len = PyList_GET_SIZE(self->wrapped);
+
+ /* empty arrays are converted to NULLs (still searching for a way to
+ insert an empty array in postgresql */
+ if (len == 0) return PyString_FromString("'{}'");
+
+ tmp = PyTuple_New(len);
+
+ for (i=0; i<len; i++) {
+ PyObject *quoted =
+ microprotocol_getquoted(PyList_GET_ITEM(self->wrapped, i),
+ (connectionObject*)self->connection);
+ if (quoted == NULL) goto error;
+
+ /* here we don't loose a refcnt: SET_ITEM does not change the
+ reference count and we are just transferring ownership of the tmp
+ object to the tuple */
+ PyTuple_SET_ITEM(tmp, i, quoted);
+ }
+
+ /* now that we have a tuple of adapted objects we just need to join them
+ and put "ARRAY[] around the result */
+ str = PyString_FromString(", ");
+ joined = PyObject_CallMethod(str, "join", "(O)", tmp);
+ if (joined == NULL) goto error;
+
+ res = PyString_FromFormat("ARRAY[%s]", PyString_AsString(joined));
+
+ error:
+ Py_XDECREF(tmp);
+ Py_XDECREF(str);
+ Py_XDECREF(joined);
+ return res;
+}
+
+PyObject *
+list_str(listObject *self, PyObject *args)
+{
+ if (!PyArg_ParseTuple(args, "")) return NULL;
+ return list_quote(self);
+}
+
+PyObject *
+list_getquoted(listObject *self, PyObject *args)
+{
+ if (!PyArg_ParseTuple(args, "")) return NULL;
+ return list_quote(self);
+}
+
+PyObject *
+list_prepare(listObject *self, PyObject *args)
+{
+ connectionObject *conn;
+
+ if (!PyArg_ParseTuple(args, "O", &conn))
+ return NULL;
+
+ /* note that we don't copy the encoding from the connection, but take a
+ reference to it; we'll need it during the recursive adapt() call (the
+ encoding is here for a future expansion that will make .getquoted()
+ work even without a connection to the backend. */
+ Py_XDECREF(self->connection);
+ self->connection = (PyObject*)conn;
+ Py_INCREF(self->connection);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+PyObject *
+list_conform(listObject *self, PyObject *args)
+{
+ PyObject *res, *proto;
+
+ if (!PyArg_ParseTuple(args, "O", &proto)) return NULL;
+
+ if (proto == (PyObject*)&isqlquoteType)
+ res = (PyObject*)self;
+ else
+ res = Py_None;
+
+ Py_INCREF(res);
+ return res;
+}
+
+/** the DateTime wrapper object **/
+
+/* object member list */
+
+static struct PyMemberDef listObject_members[] = {
+ {"adapted", T_OBJECT, offsetof(listObject, wrapped), RO},
+ {NULL}
+};
+
+/* object method table */
+
+static PyMethodDef listObject_methods[] = {
+ {"getquoted", (PyCFunction)list_getquoted, METH_VARARGS,
+ "getquoted() -> wrapped object value as SQL date/time"},
+ {"prepare", (PyCFunction)list_prepare, METH_VARARGS,
+ "prepare(conn) -> set encoding to conn->encoding"},
+ {"__conform__", (PyCFunction)list_conform, METH_VARARGS, NULL},
+ {NULL} /* Sentinel */
+};
+
+/* initialization and finalization methods */
+
+static int
+list_setup(listObject *self, PyObject *obj, char *enc)
+{
+ Dprintf("list_setup: init list object at %p, refcnt = %d",
+ self, ((PyObject *)self)->ob_refcnt);
+
+ if (!PyList_Check(obj))
+ return -1;
+
+ /* FIXME: remove this orrible strdup */
+ if (enc) self->encoding = strdup(enc);
+
+ self->connection = NULL;
+ self->wrapped = obj;
+ Py_INCREF(self->wrapped);
+
+ Dprintf("list_setup: good list object at %p, refcnt = %d",
+ self, ((PyObject *)self)->ob_refcnt);
+ return 0;
+}
+
+static void
+list_dealloc(PyObject* obj)
+{
+ listObject *self = (listObject *)obj;
+
+ Py_XDECREF(self->wrapped);
+ Py_XDECREF(self->connection);
+ if (self->encoding) free(self->encoding);
+
+ Dprintf("list_dealloc: deleted list object at %p, "
+ "refcnt = %d", obj, obj->ob_refcnt);
+
+ obj->ob_type->tp_free(obj);
+}
+
+static int
+list_init(PyObject *obj, PyObject *args, PyObject *kwds)
+{
+ PyObject *l;
+ char *enc = "latin-1"; /* default encoding as in Python */
+
+ if (!PyArg_ParseTuple(args, "O|s", &l, &enc))
+ return -1;
+
+ return list_setup((listObject *)obj, l, enc);
+}
+
+static PyObject *
+list_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+ return type->tp_alloc(type, 0);
+}
+
+static void
+list_del(PyObject* self)
+{
+ PyObject_Del(self);
+}
+
+static PyObject *
+list_repr(listObject *self)
+{
+ return PyString_FromFormat("<psycopg2._psycopg.List object at %p>", self);
+}
+
+/* object type */
+
+#define listType_doc \
+"List(list) -> new list wrapper object"
+
+PyTypeObject listType = {
+ PyObject_HEAD_INIT(NULL)
+ 0,
+ "psycopg2._psycopg.List",
+ sizeof(listObject),
+ 0,
+ list_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ 0, /*tp_getattr*/
+ 0, /*tp_setattr*/
+
+ 0, /*tp_compare*/
+ (reprfunc)list_repr, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash */
+
+ 0, /*tp_call*/
+ (reprfunc)list_str, /*tp_str*/
+ 0, /*tp_getattro*/
+ 0, /*tp_setattro*/
+ 0, /*tp_as_buffer*/
+
+ Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+
+ listType_doc, /*tp_doc*/
+
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+
+ /* Attribute descriptor and subclassing stuff */
+
+ listObject_methods, /*tp_methods*/
+ listObject_members, /*tp_members*/
+ 0, /*tp_getset*/
+ 0, /*tp_base*/
+ 0, /*tp_dict*/
+
+ 0, /*tp_descr_get*/
+ 0, /*tp_descr_set*/
+ 0, /*tp_dictoffset*/
+
+ list_init, /*tp_init*/
+ 0, /*tp_alloc will be set to PyType_GenericAlloc in module init*/
+ list_new, /*tp_new*/
+ (freefunc)list_del, /*tp_free Low-level free-memory routine */
+ 0, /*tp_is_gc For PyObject_IS_GC */
+ 0, /*tp_bases*/
+ 0, /*tp_mro method resolution order */
+ 0, /*tp_cache*/
+ 0, /*tp_subclasses*/
+ 0 /*tp_weaklist*/
+};
+
+
+/** module-level functions **/
+
+PyObject *
+psyco_List(PyObject *module, PyObject *args)
+{
+ PyObject *str;
+ char *enc = "latin-1"; /* default encoding as in Python */
+
+ if (!PyArg_ParseTuple(args, "O|s", &str, &enc))
+ return NULL;
+
+ return PyObject_CallFunction((PyObject *)&listType, "Os", str, enc);
+}
git://git.onelab.eu / plcapi.git / blobdiff