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/* KInterbasDB Python Package - Implementation of Parameter Conversion DB->Py
**
** Version 3.1
**
** 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>
** 2002-2004 [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. */
static PyObject *conv_out_char(char *data, int size) {
return PyString_FromStringAndSize(data, 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
)
{
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 = PyTuple_New(2);
PyObject *py_scale;
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_return_integer_or_fixed_tuple */
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);
return _conv_out_integer_types(py_int, is_fixed_point, scale);
} /* conv_out_short_long */
#ifdef INTERBASE6_OR_LATER
static PyObject *conv_out_int64(char *data,
boolean is_fixed_point, short scale
)
{
/* Python's long type, which has unlimited range, is computationally
** expensive relative to Python's int type, which wraps a native long. So:
** 1. On platforms where C's long is 64 bits or larger, unconditionally
** return a Python int.
** 2. On platforms where C's long is smaller than 64 bits, test the outgoing
** value at runtime to see if it's within the range of a Python int; if
** so, return a Python int rather than a Python long. It is expected that
** the cost of the test is less than the cost of using a Python long. */
#if defined(_MSC_VER) || defined(__BORLANDC__)
/* MSVC 6 and BCPP 5.5 won't accept the LL suffix. */
#define NativeLongIsAtLeast64Bits \
(LONG_MAX >= 9223372036854775807i64 && LONG_MIN <= (-9223372036854775807i64 - 1))
#else
#define NativeLongIsAtLeast64Bits \
(LONG_MAX >= 9223372036854775807LL && LONG_MIN <= (-9223372036854775807LL - 1))
#endif
#if NativeLongIsAtLeast64Bits
#define PythonIntOrLongFrom64BitValue(x) PyInt_FromLong((long) x)
#else
#define PythonIntOrLongFrom64BitValue(x) \
( (x < LONG_MIN || x > LONG_MAX) ? PyLong_FromLongLong(x) : PyInt_FromLong((long) x) )
#endif
const LONG_LONG dataLL = *((LONG_LONG *) data);
PyObject *py_int = PythonIntOrLongFrom64BitValue(dataLL);
return _conv_out_integer_types(py_int, is_fixed_point, scale);
} /* conv_out_int64 */
#endif /* INTERBASE6_OR_LATER */
static PyObject *conv_out_float(char *data) {
return PyFloat_FromDouble( *( (float *) data ) );
} /* conv_out_float */
static PyObject *conv_out_double(char *data) {
return PyFloat_FromDouble( *( (double *) data ) );
} /* conv_out_double */
/* Date/time types: */
static PyObject *conv_out_timestamp(char *data) {
struct tm c_tm;
ENTER_DB
isc_decode_timestamp( (ISC_TIMESTAMP *)data, &c_tm );
LEAVE_DB
return Py_BuildValue("(iiiiii)",
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
);
} /* conv_out_timestamp */
#ifdef INTERBASE6_OR_LATER
static PyObject *conv_out_date(char *data) {
struct tm c_tm;
ENTER_DB
isc_decode_sql_date( (ISC_DATE *)data, &c_tm );
LEAVE_DB
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;
ENTER_DB
isc_decode_sql_time( (ISC_TIME *)data, &c_tm );
LEAVE_DB
return Py_BuildValue("(iii)", c_tm.tm_hour, c_tm.tm_min, c_tm.tm_sec);
} /* conv_out_time */
#endif /* INTERBASE6_OR_LATER */
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