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py3compat has PyBytes_Check macro which evalates to PyString_Check in python2. To help switch behaviour based on whether you are dealing with the bytes type the following macros have been added. IsPy3Bytes IsPy3BytesOrString IsPy3Bytes will evaluate to false in python2 and will return the expected result in python3. IsPy3BytesOrString will test for string type alone in python2 or bytes and string in python3. Signed-off-by: Noel Power <noel.power@suse.com> Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
208 lines
6.2 KiB
C
208 lines
6.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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Python 3 compatibility macros
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Copyright (C) Petr Viktorin <pviktori@redhat.com> 2015
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SAMBA_PY3COMPAT_H_
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#define _SAMBA_PY3COMPAT_H_
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#include <Python.h>
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/* Quick docs:
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*
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* The IS_PY3 preprocessor constant is 1 on Python 3, and 0 on Python 2.
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*
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* "PyStr_*" works like PyUnicode_* on Python 3, but uses bytestrings (str)
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* under Python 2.
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*
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* "PyBytes_*" work like in Python 3; on Python 2 they are aliased to their
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* PyString_* names.
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*
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* "PyInt_*" works like PyLong_*
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*
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* Syntax for module initialization is as in Python 3, except the entrypoint
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* function definition and declaration:
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* PyMODINIT_FUNC PyInit_modulename(void);
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* PyMODINIT_FUNC PyInit_modulename(void)
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* {
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* ...
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* }
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* is replaced by:
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* MODULE_INIT_FUNC(modulename)
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* {
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* ...
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* }
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*
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* In the entrypoint, create a module using PyModule_Create and PyModuleDef,
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* and return it. See Python 3 documentation for details.
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* For Python 2 compatibility, always set PyModuleDef.m_size to -1.
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*
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*/
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#if PY_MAJOR_VERSION >= 3
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/***** Python 3 *****/
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#define IS_PY3 1
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/* Strings */
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#define PyStr_Type PyUnicode_Type
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#define PyStr_Check PyUnicode_Check
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#define PyStr_CheckExact PyUnicode_CheckExact
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#define PyStr_FromString PyUnicode_FromString
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#define PyStr_FromStringAndSize PyUnicode_FromStringAndSize
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#define PyStr_FromFormat PyUnicode_FromFormat
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#define PyStr_FromFormatV PyUnicode_FromFormatV
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#define PyStr_AsString PyUnicode_AsUTF8
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#define PyStr_Concat PyUnicode_Concat
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#define PyStr_Format PyUnicode_Format
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#define PyStr_InternInPlace PyUnicode_InternInPlace
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#define PyStr_InternFromString PyUnicode_InternFromString
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#define PyStr_Decode PyUnicode_Decode
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#define PyStr_AsUTF8String PyUnicode_AsUTF8String // returns PyBytes
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#define PyStr_AsUTF8 PyUnicode_AsUTF8
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#define PyStr_AsUTF8AndSize PyUnicode_AsUTF8AndSize
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/* description of bytes and string objects */
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#define PY_DESC_PY3_BYTES "bytes"
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#define PY_DESC_PY3_STRING "string"
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/* Determine if object is really bytes, for code that runs
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* in python2 & python3 (note: PyBytes_Check is replaced by
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* PyString_Check in python2) so care needs to be taken when
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* writing code that will check if incoming type is bytes that
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* will work as expected in python2 & python3
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*/
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#define IsPy3Bytes PyBytes_Check
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#define IsPy3BytesOrString(pystr) \
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(PyStr_Check(pystr) || PyBytes_Check(pystr))
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/* Ints */
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#define PyInt_Type PyLong_Type
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#define PyInt_Check PyLong_Check
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#define PyInt_CheckExact PyLong_CheckExact
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#define PyInt_FromString PyLong_FromString
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#define PyInt_FromLong PyLong_FromLong
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#define PyInt_FromSsize_t PyLong_FromSsize_t
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#define PyInt_FromSize_t PyLong_FromSize_t
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#define PyInt_AsLong PyLong_AsLong
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#define PyInt_AS_LONG PyLong_AS_LONG
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#define PyInt_AsUnsignedLongLongMask PyLong_AsUnsignedLongLongMask
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#define PyInt_AsSsize_t PyLong_AsSsize_t
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/* Module init */
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#define MODULE_INIT_FUNC(name) \
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PyMODINIT_FUNC PyInit_ ## name(void); \
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PyMODINIT_FUNC PyInit_ ## name(void)
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/* PyArg_ParseTuple/Py_BuildValue argument */
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#define PYARG_BYTES_LEN "y#"
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#else
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/***** Python 2 *****/
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#define IS_PY3 0
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/* Strings */
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#define PyStr_Type PyString_Type
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#define PyStr_Check PyString_Check
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#define PyStr_CheckExact PyString_CheckExact
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#define PyStr_FromString PyString_FromString
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#define PyStr_FromStringAndSize PyString_FromStringAndSize
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#define PyStr_FromFormat PyString_FromFormat
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#define PyStr_FromFormatV PyString_FromFormatV
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#define PyStr_AsString PyString_AsString
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#define PyStr_Format PyString_Format
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#define PyStr_InternInPlace PyString_InternInPlace
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#define PyStr_InternFromString PyString_InternFromString
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#define PyStr_Decode PyString_Decode
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#define PyStr_AsUTF8String(str) (Py_INCREF(str), (str))
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#define PyStr_AsUTF8 PyString_AsString
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#define PyStr_AsUTF8AndSize(pystr, sizeptr) \
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((*sizeptr=PyString_Size(pystr)), PyString_AsString(pystr))
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#define PyBytes_Type PyString_Type
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#define PyBytes_Check PyString_Check
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#define PyBytes_CheckExact PyString_CheckExact
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#define PyBytes_FromString PyString_FromString
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#define PyBytes_FromStringAndSize PyString_FromStringAndSize
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#define PyBytes_FromFormat PyString_FromFormat
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#define PyBytes_FromFormatV PyString_FromFormatV
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#define PyBytes_Size PyString_Size
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#define PyBytes_GET_SIZE PyString_GET_SIZE
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#define PyBytes_AsString PyString_AsString
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#define PyBytes_AS_STRING PyString_AS_STRING
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#define PyBytes_AsStringAndSize PyString_AsStringAndSize
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#define PyBytes_Concat PyString_Concat
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#define PyBytes_ConcatAndDel PyString_ConcatAndDel
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#define _PyBytes_Resize _PyString_Resize
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/* description of bytes and string objects */
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#define PY_DESC_PY3_BYTES "string"
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#define PY_DESC_PY3_STRING "unicode"
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/* Determine if object is really bytes, for code that runs
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* in python2 & python3 (note: PyBytes_Check is replaced by
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* PyString_Check in python2) so care needs to be taken when
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* writing code that will check if incoming type is bytes that
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* will work as expected in python2 & python3
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*/
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#define IsPy3Bytes(pystr) false
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#define IsPy3BytesOrString PyStr_Check
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/* PyArg_ParseTuple/Py_BuildValue argument */
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#define PYARG_BYTES_LEN "s#"
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/* Module init */
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#define PyModuleDef_HEAD_INIT 0
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typedef struct PyModuleDef {
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int m_base;
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const char* m_name;
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const char* m_doc;
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Py_ssize_t m_size;
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PyMethodDef *m_methods;
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} PyModuleDef;
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#define PyModule_Create(def) \
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Py_InitModule3((def)->m_name, (def)->m_methods, (def)->m_doc)
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#define MODULE_INIT_FUNC(name) \
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static PyObject *PyInit_ ## name(void); \
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void init ## name(void); \
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void init ## name(void) { PyInit_ ## name(); } \
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static PyObject *PyInit_ ## name(void)
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#endif
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#endif
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