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/* adapter_datetime.c - python date/time objects
*
* Copyright (C) 2003-2010 Federico Di Gregorio <fog@debian.org>
*
* This file is part of psycopg.
*
* psycopg2 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 3 of the License, or
* (at your option) any later version.
*
* In addition, as a special exception, the copyright holders give
* permission to link this program with the OpenSSL library (or with
* modified versions of OpenSSL that use the same license as OpenSSL),
* and distribute linked combinations including the two.
*
* You must obey the GNU Lesser General Public License in all respects for
* all of the code used other than OpenSSL.
*
* psycopg2 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.
*/
#define PY_SSIZE_T_CLEAN
#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_datetime.h"
#include "psycopg/microprotocols_proto.h"
/* the pointer to the datetime module API is initialized by the module init
code, we just need to grab it */
extern HIDDEN PyObject* pyDateTimeModuleP;
extern HIDDEN PyObject *pyDateTypeP;
extern HIDDEN PyObject *pyTimeTypeP;
extern HIDDEN PyObject *pyDateTimeTypeP;
extern HIDDEN PyObject *pyDeltaTypeP;
extern HIDDEN PyObject *pyPsycopgTzModule;
extern HIDDEN PyObject *pyPsycopgTzLOCAL;
/* datetime_str, datetime_getquoted - return result of quoting */
static PyObject *
pydatetime_str(pydatetimeObject *self)
{
PyObject *res = NULL;
PyObject *iso;
if (self->type <= PSYCO_DATETIME_TIMESTAMP) {
PyObject *tz;
/* Select the right PG type to cast into. */
char *fmt = NULL;
switch (self->type) {
case PSYCO_DATETIME_TIME:
fmt = "'%s'::time";
break;
case PSYCO_DATETIME_DATE:
fmt = "'%s'::date";
break;
case PSYCO_DATETIME_TIMESTAMP:
tz = PyObject_GetAttrString(self->wrapped, "tzinfo");
if (!tz) { return NULL; }
fmt = (tz == Py_None) ? "'%s'::timestamp" : "'%s'::timestamptz";
Py_DECREF(tz);
break;
}
iso = PyObject_CallMethod(self->wrapped, "isoformat", NULL);
if (iso) {
res = PyString_FromFormat(fmt, PyString_AsString(iso));
Py_DECREF(iso);
}
return res;
}
else {
PyDateTime_Delta *obj = (PyDateTime_Delta*)self->wrapped;
char buffer[8];
int i;
int a = obj->microseconds;
for (i=0; i < 6 ; i++) {
buffer[5-i] = '0' + (a % 10);
a /= 10;
}
buffer[6] = '\0';
return PyString_FromFormat("'%d days %d.%s seconds'::interval",
obj->days, obj->seconds, buffer);
}
}
static PyObject *
pydatetime_getquoted(pydatetimeObject *self, PyObject *args)
{
return pydatetime_str(self);
}
static PyObject *
pydatetime_conform(pydatetimeObject *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 pydatetimeObject_members[] = {
{"adapted", T_OBJECT, offsetof(pydatetimeObject, wrapped), RO},
{"type", T_INT, offsetof(pydatetimeObject, type), RO},
{NULL}
};
/* object method table */
static PyMethodDef pydatetimeObject_methods[] = {
{"getquoted", (PyCFunction)pydatetime_getquoted, METH_NOARGS,
"getquoted() -> wrapped object value as SQL date/time"},
{"__conform__", (PyCFunction)pydatetime_conform, METH_VARARGS, NULL},
{NULL} /* Sentinel */
};
/* initialization and finalization methods */
static int
pydatetime_setup(pydatetimeObject *self, PyObject *obj, int type)
{
Dprintf("pydatetime_setup: init datetime object at %p, refcnt = "
FORMAT_CODE_PY_SSIZE_T,
self, ((PyObject *)self)->ob_refcnt);
self->type = type;
Py_INCREF(obj);
self->wrapped = obj;
Dprintf("pydatetime_setup: good pydatetime object at %p, refcnt = "
FORMAT_CODE_PY_SSIZE_T,
self, ((PyObject *)self)->ob_refcnt);
return 0;
}
static int
pydatetime_traverse(PyObject *obj, visitproc visit, void *arg)
{
pydatetimeObject *self = (pydatetimeObject *)obj;
Py_VISIT(self->wrapped);
return 0;
}
static void
pydatetime_dealloc(PyObject* obj)
{
pydatetimeObject *self = (pydatetimeObject *)obj;
Py_CLEAR(self->wrapped);
Dprintf("mpydatetime_dealloc: deleted pydatetime object at %p, "
"refcnt = " FORMAT_CODE_PY_SSIZE_T, obj, obj->ob_refcnt);
obj->ob_type->tp_free(obj);
}
static int
pydatetime_init(PyObject *obj, PyObject *args, PyObject *kwds)
{
PyObject *dt;
int type = -1; /* raise an error if type was not passed! */
if (!PyArg_ParseTuple(args, "O|i", &dt, &type))
return -1;
return pydatetime_setup((pydatetimeObject *)obj, dt, type);
}
static PyObject *
pydatetime_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
return type->tp_alloc(type, 0);
}
static void
pydatetime_del(PyObject* self)
{
PyObject_GC_Del(self);
}
static PyObject *
pydatetime_repr(pydatetimeObject *self)
{
return PyString_FromFormat("<psycopg2._psycopg.datetime object at %p>",
self);
}
/* object type */
#define pydatetimeType_doc \
"datetime(datetime, type) -> new datetime wrapper object"
PyTypeObject pydatetimeType = {
PyObject_HEAD_INIT(NULL)
0,
"psycopg2._psycopg.datetime",
sizeof(pydatetimeObject),
0,
pydatetime_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
(reprfunc)pydatetime_repr, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
(reprfunc)pydatetime_str, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
pydatetimeType_doc, /*tp_doc*/
pydatetime_traverse, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
/* Attribute descriptor and subclassing stuff */
pydatetimeObject_methods, /*tp_methods*/
pydatetimeObject_members, /*tp_members*/
0, /*tp_getset*/
0, /*tp_base*/
0, /*tp_dict*/
0, /*tp_descr_get*/
0, /*tp_descr_set*/
0, /*tp_dictoffset*/
pydatetime_init, /*tp_init*/
0, /*tp_alloc will be set to PyType_GenericAlloc in module init*/
pydatetime_new, /*tp_new*/
(freefunc)pydatetime_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 **/
#ifdef PSYCOPG_DEFAULT_PYDATETIME
PyObject *
psyco_Date(PyObject *self, PyObject *args)
{
PyObject *res = NULL;
int year, month, day;
PyObject* obj = NULL;
if (!PyArg_ParseTuple(args, "iii", &year, &month, &day))
return NULL;
obj = PyObject_CallFunction(pyDateTypeP, "iii", year, month, day);
if (obj) {
res = PyObject_CallFunction((PyObject *)&pydatetimeType,
"Oi", obj, PSYCO_DATETIME_DATE);
Py_DECREF(obj);
}
return res;
}
PyObject *
psyco_Time(PyObject *self, PyObject *args)
{
PyObject *res = NULL;
PyObject *tzinfo = NULL;
int hours, minutes=0;
double micro, second=0.0;
PyObject* obj = NULL;
if (!PyArg_ParseTuple(args, "iid|O", &hours, &minutes, &second,
&tzinfo))
return NULL;
micro = (second - floor(second)) * 1000000.0;
second = floor(second);
if (tzinfo == NULL)
obj = PyObject_CallFunction(pyTimeTypeP, "iiii",
hours, minutes, (int)second, (int)round(micro));
else
obj = PyObject_CallFunction(pyTimeTypeP, "iiiiO",
hours, minutes, (int)second, (int)round(micro), tzinfo);
if (obj) {
res = PyObject_CallFunction((PyObject *)&pydatetimeType,
"Oi", obj, PSYCO_DATETIME_TIME);
Py_DECREF(obj);
}
return res;
}
PyObject *
psyco_Timestamp(PyObject *self, PyObject *args)
{
PyObject *res = NULL;
PyObject *tzinfo = NULL;
int year, month, day;
int hour=0, minute=0; /* default to midnight */
double micro, second=0.0;
PyObject* obj = NULL;
if (!PyArg_ParseTuple(args, "lii|iidO", &year, &month, &day,
&hour, &minute, &second, &tzinfo))
return NULL;
micro = (second - floor(second)) * 1000000.0;
second = floor(second);
if (tzinfo == NULL)
obj = PyObject_CallFunction(pyDateTimeTypeP, "iiiiiii",
year, month, day, hour, minute, (int)second,
(int)round(micro));
else
obj = PyObject_CallFunction(pyDateTimeTypeP, "iiiiiiiO",
year, month, day, hour, minute, (int)second,
(int)round(micro), tzinfo);
if (obj) {
res = PyObject_CallFunction((PyObject *)&pydatetimeType,
"Oi", obj, PSYCO_DATETIME_TIMESTAMP);
Py_DECREF(obj);
}
return res;
}
PyObject *
psyco_DateFromTicks(PyObject *self, PyObject *args)
{
PyObject *res = NULL;
struct tm tm;
time_t t;
double ticks;
if (!PyArg_ParseTuple(args, "d", &ticks))
return NULL;
t = (time_t)floor(ticks);
if (localtime_r(&t, &tm)) {
args = Py_BuildValue("iii", tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday);
if (args) {
res = psyco_Date(self, args);
Py_DECREF(args);
}
}
return res;
}
PyObject *
psyco_TimeFromTicks(PyObject *self, PyObject *args)
{
PyObject *res = NULL;
struct tm tm;
time_t t;
double ticks;
if (!PyArg_ParseTuple(args,"d", &ticks))
return NULL;
t = (time_t)floor(ticks);
ticks -= (double)t;
if (localtime_r(&t, &tm)) {
args = Py_BuildValue("iid", tm.tm_hour, tm.tm_min,
(double)tm.tm_sec + ticks);
if (args) {
res = psyco_Time(self, args);
Py_DECREF(args);
}
}
return res;
}
PyObject *
psyco_TimestampFromTicks(PyObject *self, PyObject *args)
{
PyObject *res = NULL;
struct tm tm;
time_t t;
double ticks;
if (!PyArg_ParseTuple(args, "d", &ticks))
return NULL;
t = (time_t)floor(ticks);
ticks -= (double)t;
if (localtime_r(&t, &tm)) {
PyObject *value = Py_BuildValue("iiiiidO",
tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday,
tm.tm_hour, tm.tm_min,
(double)tm.tm_sec + ticks,
pyPsycopgTzLOCAL);
if (value) {
/* FIXME: not decref'ing the value here is a memory leak
but, on the other hand, if we decref we get a clean nice
segfault (on my 64 bit Python 2.4 box). So this leaks
will stay until after 2.0.7 when we'll try to plug it */
res = psyco_Timestamp(self, value);
}
}
return res;
}
#endif
PyObject *
psyco_DateFromPy(PyObject *self, PyObject *args)
{
PyObject *obj;
if (!PyArg_ParseTuple(args, "O!", pyDateTypeP, &obj))
return NULL;
return PyObject_CallFunction((PyObject *)&pydatetimeType, "Oi", obj,
PSYCO_DATETIME_DATE);
}
PyObject *
psyco_TimeFromPy(PyObject *self, PyObject *args)
{
PyObject *obj;
if (!PyArg_ParseTuple(args, "O!", pyTimeTypeP, &obj))
return NULL;
return PyObject_CallFunction((PyObject *)&pydatetimeType, "Oi", obj,
PSYCO_DATETIME_TIME);
}
PyObject *
psyco_TimestampFromPy(PyObject *self, PyObject *args)
{
PyObject *obj;
if (!PyArg_ParseTuple(args, "O!", pyDateTimeTypeP, &obj))
return NULL;
return PyObject_CallFunction((PyObject *)&pydatetimeType, "Oi", obj,
PSYCO_DATETIME_TIMESTAMP);
}
PyObject *
psyco_IntervalFromPy(PyObject *self, PyObject *args)
{
PyObject *obj;
if (!PyArg_ParseTuple(args, "O!", pyDeltaTypeP, &obj))
return NULL;
return PyObject_CallFunction((PyObject *)&pydatetimeType, "Oi", obj,
PSYCO_DATETIME_INTERVAL);
}
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