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/* KInterbasDB Python Package - Implementation of Parameter Conversion DB->Py
*
* Version 3.3
*
* The following contributors hold Copyright (C) over their respective
* portions of code (see license.txt for details):
*
* [Original Author (maintained through version 2.0-0.3.1):]
* 1998-2001 [alex] Alexander Kuznetsov <alexan@users.sourceforge.net>
* [Maintainers (after version 2.0-0.3.1):]
* 2001-2002 [maz] Marek Isalski <kinterbasdb@maz.nu>
* 2002-2007 [dsr] David Rushby <woodsplitter@rocketmail.com>
* [Contributors:]
* 2001 [eac] Evgeny A. Cherkashin <eugeneai@icc.ru>
* 2001-2002 [janez] Janez Jere <janez.jere@void.si>
*/
/* This source file is designed to be directly included in _kiconversion.c,
* without the involvement of a header file. */
/* The undocumented portion of ISC_TIME is ten-thousandths of a second: */
#define MICROSECONDS_FROM_ISC_TIME(t) \
(((t) % 10000) * 100)
#define MICROSECONDS_FROM_ISC_TIMESTAMP_PTR(tp) \
(((tp)->timestamp_time % 10000) * 100)
static PyObject *conv_out_char(char *data, size_t size) {
return PyString_FromStringAndSize(data, SIZE_T_TO_PYTHON_SIZE(size));
} /* conv_out_char */
static PyObject *conv_out_varchar(char *data) {
/* The first sizeof(short) bytes contain the size of the string. */
return PyString_FromStringAndSize(
data + sizeof(short),
(int) *( (short *)data )
);
} /* conv_out_varchar */
static PyObject *_conv_out_integer_types(
PyObject *py_raw, boolean is_fixed_point, short scale
)
{
/* Reference ownership note:
* This function is passed ownership of py_raw. In the non-fixed point case,
* we return that reference. For fixed point, we transfer ownership of the
* py_raw reference to the containing tuple, then return our owned reference
* to the tuple. */
assert (py_raw != NULL);
if (!is_fixed_point) {
/* Simply return the integer value. */
return py_raw;
} else {
/* We're converting a fixed-point rather than an integer; return a 2-tuple
* of the form: (value, scale) */
PyObject *fixed_tuple;
PyObject *py_scale;
fixed_tuple = PyTuple_New(2);
if (fixed_tuple == NULL) { return NULL; }
py_scale = PyInt_FromLong(scale);
if (py_scale == NULL) {
Py_DECREF(fixed_tuple);
return NULL;
}
PyTuple_SET_ITEM(fixed_tuple, 0, py_raw); /* "steals" ref to py_raw */
PyTuple_SET_ITEM(fixed_tuple, 1, py_scale); /* "steals" ref to py_scale */
return fixed_tuple;
}
} /* _conv_out_integer_types */
static PyObject *conv_out_short_long(
char *data,
short data_type, boolean is_fixed_point, short scale
)
{
/* 2004.04.16:64BC: On x86_64/1.5.1pre1, ISC_LONG is actually an int. */
long conv_long = (long)(
data_type == SQL_SHORT ?
( *((ISC_SHORT *) data) )
: ( *((ISC_LONG *) data) )
);
PyObject *py_int = PyInt_FromLong(conv_long);
if (py_int == NULL) { return NULL; }
return _conv_out_integer_types(py_int, is_fixed_point, scale);
} /* conv_out_short_long */
#ifdef INTERBASE_6_OR_LATER
static PyObject *conv_out_int64(
char *data,
boolean is_fixed_point, short scale
)
{
const LONG_LONG dataLL = *((LONG_LONG *) data);
PyObject *py_int = PythonIntOrLongFrom64BitValue(dataLL);
if (py_int == NULL) { return NULL; }
return _conv_out_integer_types(py_int, is_fixed_point, scale);
} /* conv_out_int64 */
#endif /* INTERBASE_6_OR_LATER */
static PyObject *conv_out_floating(const double raw,
const unsigned short dialect, const short scale
)
{
/* It's possible that a user would define a field as DECIMAL/NUMERIC with
* a scale of zero, but the API provides no way for us to detect that. */
if (dialect >= 3 || scale == 0) {
return PyFloat_FromDouble(raw);
}{
/* The value being converted is from a field that's logically fixed-point
* rather than floating-point. This can only arise in pre-dialect-3
* databases. */
/* This is a perfect application for Py_BuildValue, but it doesn't
* support 64-bit integers. */
PyObject *fixed_tuple;
PyObject *py_scaled_integer;
PyObject *py_scale;
fixed_tuple = PyTuple_New(2);
if (fixed_tuple != NULL) {
py_scaled_integer = PythonIntOrLongFrom64BitValue(
(LONG_LONG) (raw * pow(10.0f, (double) -scale))
);
if (py_scaled_integer == NULL) {
Py_DECREF(fixed_tuple);
fixed_tuple = NULL;
} else {
py_scale = PyInt_FromLong(scale);
if (py_scale == NULL) {
Py_DECREF(fixed_tuple);
fixed_tuple = NULL;
Py_DECREF(py_scaled_integer);
} else {
PyTuple_SET_ITEM(fixed_tuple, 0, py_scaled_integer); /* "steals" ref */
PyTuple_SET_ITEM(fixed_tuple, 1, py_scale); /* "steals" ref */
}
}
}
return fixed_tuple;
}} /* conv_out_floating */
/* Date/time types: */
static PyObject *conv_out_timestamp(char *data) {
struct tm c_tm;
int ported_ints[2]; /* sizeof(ported_ints) == sizeof(ISC_TIMESTAMP) */
int microseconds;
ENTER_GDAL
ported_ints[0] = isc_vax_integer(data, sizeof(int));
ported_ints[1] = isc_vax_integer(data + sizeof(int), sizeof(int));
isc_decode_timestamp((ISC_TIMESTAMP *) &ported_ints, &c_tm);
microseconds = MICROSECONDS_FROM_ISC_TIMESTAMP_PTR((ISC_TIMESTAMP *) data);
LEAVE_GDAL
return Py_BuildValue("(iiiiiii)",
c_tm.tm_year+1900, c_tm.tm_mon+1, c_tm.tm_mday,
c_tm.tm_hour, c_tm.tm_min, c_tm.tm_sec,
microseconds
);
} /* conv_out_timestamp */
#ifdef INTERBASE_6_OR_LATER
static PyObject *conv_out_date(char *data) {
struct tm c_tm;
int data_as_portable_int;
ENTER_GDAL
data_as_portable_int = isc_vax_integer(data, sizeof(int));
isc_decode_sql_date((ISC_DATE *) &data_as_portable_int, &c_tm);
LEAVE_GDAL
return Py_BuildValue("(iii)", c_tm.tm_year+1900, c_tm.tm_mon+1, c_tm.tm_mday);
} /* conv_out_date */
static PyObject *conv_out_time(char *data) {
struct tm c_tm;
int data_as_portable_int;
int microseconds;
ENTER_GDAL
data_as_portable_int = isc_vax_integer(data, sizeof(int));
isc_decode_sql_time((ISC_TIME *) &data_as_portable_int, &c_tm);
microseconds = MICROSECONDS_FROM_ISC_TIME(*((ISC_TIME *) data));
LEAVE_GDAL
return Py_BuildValue("(iiii)",
c_tm.tm_hour, c_tm.tm_min, c_tm.tm_sec, microseconds
);
} /* conv_out_time */
#endif /* INTERBASE_6_OR_LATER */
#define conv_out_boolean(data) \
PyBool_FromLong( *((ISC_BOOLEAN *) (data)) )
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