Array support completed (closes: #1).

1 files changed, 301 insertions, 0 deletions

diff --git a/psycopg/adapter_list.c b/psycopg/adapter_list.c
new file mode 100644
index 0000000..88db602
--- /dev/null
+++ b/psycopg/adapter_list.c
@@ -0,0 +1,301 @@
+/* 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>
+#include <datetime.h>
+
+#include <time.h>
+#include <string.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("NULL");
+    
+    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("<psycopg.list object at %p>", self);
+}
+
+/* object type */
+
+#define listType_doc \
+"psycopg.List(list) -> new list wrapper object"
+
+PyTypeObject listType = {
+    PyObject_HEAD_INIT(NULL)
+    0,
+    "psycopg._psycopg.datetime",
+    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);
+}