Fix build and all deprecation warnings on Python 3.

.travis.yml

@@ -1,21 +1,13 @@
 sudo: required
 language:  python
-dist: trusty
 
-matrix:
-  include:
-    - os: linux
-      dist: trusty
-      python: 2.7
-    - os: linux
-      dist: trusty
-      python: 3.5
-    - os: linux
-      dist: trusty
-      python: 3.6
-    - os: linux
-      dist: xenial
-      python: 3.7
+python:
+  - 2.7
+  - 3.5
+  - 3.6
+  - 3.7
+  - 3.8
+  - 3.9
 
 install:
   - pip install zc.buildout
@@ -25,4 +17,3 @@ install:
 
 script:
   - bin/test
-

CHANGES.txt

@@ -1,3 +1,11 @@
+4.1.0 (unreleased)
+------------------
+
+- Add support for Python 3.7, 3.8, 3.9, 3.10, 3.11 and 3.12.
+- Fix building on Python 3 with certain compilers.
+- Fix certain distance computation functions on Python 3.
+- Fix all deprecation warnings on Python 3.
+
 4.0.0 (2017/05/22)
 ------------------
 - Added support for Python 3.4, 3.5 and 3.6.

setup.py

@@ -10,15 +10,16 @@
 
 
 import sys
-import os
-from setuptools import setup, find_packages, Extension
+from setuptools import setup, Extension
 
-unicode_arg = sys.maxunicode>0xffff and "-DUNICODE_WIDTH=4" or "-DUNICODE_WIDTH=2"
-ext_args = sys.platform != "win32" and ['-Wall'] or []
+unicode_arg = "-DUNICODE_WIDTH=4" if sys.maxunicode > 0xffff else "-DUNICODE_WIDTH=2"
+ext_args = ["-Wall"] if sys.platform != "win32" else []
 
-description_txt = open('README.txt').read()
+with open('README.txt') as f:
+    description_txt = f.read()
 description_txt += '\n\nChanges\n-------\n\n'
-description_txt += open('CHANGES.txt').read()
+with open('CHANGES.txt') as f:
+    description_txt += f.read()
 
 version = '4.0.0'
 
@@ -39,6 +40,12 @@
           'Programming Language :: Python :: 3',
           'Programming Language :: Python :: 3.5',
           'Programming Language :: Python :: 3.6',
+          'Programming Language :: Python :: 3.7',
+          'Programming Language :: Python :: 3.8',
+          'Programming Language :: Python :: 3.9',
+          'Programming Language :: Python :: 3.10',
+          'Programming Language :: Python :: 3.11',
+          'Programming Language :: Python :: 3.12',
           'Programming Language :: Python :: Implementation :: CPython',
           'Programming Language :: Python :: Implementation :: PyPy',
           'Operating System :: OS Independent',

zopyx/txng3/ext/compat.h

@@ -0,0 +1,29 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+#if PY_MAJOR_VERSION >= 3
+# define PY3K
+# define INT_FROM_LONG(x) PyLong_FromLong(x)
+# define INT_CHECK(x) PyLong_Check(x)
+# define UNICODE_LENGTH(x) PyUnicode_GET_LENGTH(x)
+# define UNICODE_T wchar_t
+# define PYSTR_TO_UNICODE_T(unicode, len) PyUnicode_AsWideCharString(unicode, len)
+# define UNICODE_T_TO_PYSTR(chars, len) PyUnicode_FromWideChar(chars, len)
+# define FREE_UNICODE_T(x) PyMem_Free(x)
+#else /* Python 2 */
+# define INT_FROM_LONG(x) PyInt_FromLong(x)
+# define INT_CHECK(x) PyInt_Check(x)
+# define UNICODE_LENGTH(x) PyUnicode_GET_SIZE(x)
+# define UNICODE_T Py_UNICODE
+static UNICODE_T* PYSTR_TO_UNICODE_T(PyObject* unicode, Py_ssize_t* len)
+{
+    *len = UNICODE_LENGTH(unicode);
+    return PyUnicode_AS_UNICODE(unicode);
+}
+# define UNICODE_T_TO_PYSTR(chars, len) PyUnicode_FromUnicode(chars, len)
+# define FREE_UNICODE_T(x)
+#endif
+
+#ifndef PyInt_AS_LONG
+# define PyInt_AS_LONG(x) PyLong_AsLong(x)
+#endif

zopyx/txng3/ext/normalizer_src/normalizer.c

@@ -178,14 +178,8 @@ static struct PyMethodDef Normalizer_methods[] =
 static char NormalizerType__doc__[] = "Normalizer object";
 
 static PyTypeObject NormalizerType = {
-#ifndef PY3K
-                                         PyObject_HEAD_INIT(NULL)
-                                         0,                            /*ob_size*/
-                                         "Normalizer",                 /*tp_name*/
-#else
-                                         PyObject_HEAD_INIT(NULL)
-                                         "Normalizer",                 /*tp_name*/
-#endif
+                                         PyVarObject_HEAD_INIT(NULL, 0)
+                                         "Normalizer",                 /*tp_yname*/
                                          sizeof(Normalizer),           /*tp_basicsize*/
                                          0,                            /*tp_itemsize*/
                                          /* methods */