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switch to GPL (for complience with wikidiff2) add the code.

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Nathan TeBlunthuis 2025-07-04 20:53:39 -07:00
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def main():
print("Hello from pywikidiff2!")
if __name__ == "__main__":
main()

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[build-system]
requires = ["setuptools>=61.0", "wheel"]
build-backend = "setuptools.build_meta"
[project]
name = "pywikidiff2"
version = "0.1.0"
description = "Python module providing interface to wikidiff2 for SOTA wikitext diffs."
readme = "README.md"
requires-python = ">=3.11"
dependencies = []
authors = [{ name="Nathan TeBlunthuis", email="nathanteblunthuis@gmail.com"}]

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#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include "structmember.h"
#undef HAVE_CONFIG_H // this disables the php allocator
#include "../mediawiki-php-wikidiff2/src/lib/Wikidiff2.h"
#include "../mediawiki-php-wikidiff2/src/lib/Formatter.h"
#include "../mediawiki-php-wikidiff2/src/lib/TableFormatter.h"
#include "../mediawiki-php-wikidiff2/src/lib/InlineFormatter.h"
#include "../mediawiki-php-wikidiff2/src/lib/InlineJSONFormatter.h"
using wikidiff2::Wikidiff2;
using wikidiff2::TableFormatter;
using wikidiff2::Formatter;
//using wikidiff2::InlineFormatter;
using wikidiff2::InlineJSONFormatter;
// additional state (i.e., configuration) go here.
typedef struct {
PyObject_HEAD
Wikidiff2::Config config;
} pywikidiff2Obj;
// here's where we set default configuration values
static PyObject *
pywikidiff2_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
pywikidiff2Obj *self;
self = (pywikidiff2Obj *) type->tp_alloc(type, 0);
self->config.numContextLines = 15;
self->config.movedLineThreshold = 0.4;
self->config.changeThreshold = 0.2;
self->config.maxMovedLines = 100;
self->config.maxWordLevelDiffComplexity = 40000000;
self->config.maxSplitSize = 1;
self->config.initialSplitThreshold = 0.1;
self->config.finalSplitThreshold = 0.6;
return (PyObject *) self;
}
static int
pywikidiff2_init(pywikidiff2Obj *self, PyObject *args, PyObject *kwds)
{
// here's where we set non-default configuration values
static char *kwlist[] = {"numContextLines", "moved_line_threshold", "change_threshold", "moved_paragraph_detection_cutoff", "max_word_level_diff_complexity", "max_split_size", "initial_split_threshold", "final_split_threshold", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|iffiiiff", kwlist,
&self->config.numContextLines,
&self->config.movedLineThreshold,
&self->config.changeThreshold,
&self->config.maxMovedLines,
&self->config.maxWordLevelDiffComplexity,
&self->config.maxSplitSize,
&self->config.initialSplitThreshold,
&self->config.finalSplitThreshold
)){
PyErr_SetString(PyExc_ImportError,"Error in configuration");
return -1;
}
return 0;
}
static PyObject *pywikidiff2_numContextLines(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyLong_FromLong(self->config.numContextLines);
}
static PyObject *pywikidiff2_movedLineThreshold(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyFloat_FromDouble(self->config.movedLineThreshold);
}
static PyObject *pywikidiff2_changeThreshold(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyFloat_FromDouble(self->config.changeThreshold);
}
static PyObject *pywikidiff2_maxMovedLines(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyLong_FromLong(self->config.maxMovedLines);
}
static PyObject *pywikidiff2_maxWordLevelDiffComplexity(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyLong_FromLong(self->config.maxWordLevelDiffComplexity);
}
static PyObject *pywikidiff2_maxSplitSize(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyLong_FromLong(self->config.maxSplitSize);
}
static PyObject *pywikidiff2_initialSplitThreshold(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyFloat_FromDouble(self->config.initialSplitThreshold);
}
static PyObject *pywikidiff2_finalSplitThreshold(pywikidiff2Obj *self, PyObject *Py_UNUSED(ignored)){
return PyFloat_FromDouble(self->config.finalSplitThreshold);
}
static PyObject *pywikidiff2_inline_json_diff(pywikidiff2Obj *self, PyObject *args, PyObject *kwargs){
static char* kwdlist[] = {"text1", "text2", "numContextLines", NULL};
char* text1;
char* text2;
long numContextLines;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ss|$i",
kwdlist,
&text1,
&text2,
numContextLines
)){
PyErr_SetString(PyExc_ValueError, "Error in arguments to inline_json_diff");
return NULL;
}
Wikidiff2 wikidiff2( *(&self->config));
size_t text1_len = sizeof(text1);
size_t text2_len = sizeof(text2);
Wikidiff2::String text1String(text1, text1_len);
Wikidiff2::String text2String(text2, text2_len);
InlineJSONFormatter formatter;
wikidiff2.addFormatter(formatter);
wikidiff2.execute(text1String, text2String);
Wikidiff2::String ret = formatter.getResult().str();
return PyUnicode_FromFormat("%s",ret.c_str());
};
static PyMethodDef pywikidiff2_methods[] = {
{"inline_json_diff", (PyCFunction) pywikidiff2_inline_json_diff, METH_VARARGS | METH_KEYWORDS, "run wikidiff 2 on text1 and text2"},
{"num_context_lines", (PyCFunction) pywikidiff2_numContextLines, METH_NOARGS, "number of equal lines to output in the context of a diff"},
{"moved_line_threshold", (PyCFunction) pywikidiff2_movedLineThreshold, METH_NOARGS, "The minimum similarity a pair of lines must have to be detected as a moved line. If present, this overrides php.ini wikidiff2.moved_line_threshold"},
{"change_threshold", (PyCFunction) pywikidiff2_changeThreshold, METH_NOARGS, "Changed lines with a similarity value below this threshold will be split into a deleted line and added line. This helps matching up moved lines in some cases."},
{"moved_paragraph_detection_cutoff", (PyCFunction) pywikidiff2_maxMovedLines, METH_NOARGS, "When the number of added and deleted lines in a table diff is greater than this limit, no attempt to detect moved lines will be made."},
{"max_moved_lines", (PyCFunction) pywikidiff2_maxMovedLines, METH_NOARGS, "When the number of added and deleted lines in a table diff is greater than this limit, no attempt to detect moved lines will be made."},
{"max_word_level_diff_complexity", (PyCFunction) pywikidiff2_maxWordLevelDiffComplexity, METH_NOARGS,
"When comparing two lines for changes within the line, a word-level diff will be done unless the product of the LHS word count and the RHS word count exceeds this limit."},
{"max_split_size", (PyCFunction) pywikidiff2_maxSplitSize, METH_NOARGS, "The maximum number of lines in $text2 which may be considered for a word-level diff against a single line of $text1. Default: 1."},
{"initial_split_threshold", (PyCFunction) pywikidiff2_initialSplitThreshold, METH_NOARGS, "The minimum similarity which must be maintained during a split detection search. The search terminates when the similarity falls below this level. Default: 0.1."},
{"final_split_threshold", (PyCFunction) pywikidiff2_finalSplitThreshold, METH_NOARGS, "The minimum similarity which must be achieved in order to display the comparison between one line and several lines as a split. Default 0.6."},
{NULL} /* Sentinel */
};
static PyTypeObject pywikidiff2Type = {
.ob_base = PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "pywikidiff2.pywikidiff2",
.tp_basicsize = sizeof(pywikidiff2Obj),
.tp_itemsize = 0,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = PyDoc_STR("Create an object that can run wikidiff2"),
.tp_methods = pywikidiff2_methods,
// .tp_members = pywikidiff2_members,
.tp_init = (initproc) pywikidiff2_init,
.tp_new = pywikidiff2_new,
};
static struct PyModuleDef pywikidiff2 = {
PyModuleDef_HEAD_INIT,
.m_name = "pywikidiff2",
.m_size=0,
};
// the args are: configuration dictionary, text_1, text_2
PyMODINIT_FUNC PyInit_pywikidiff2(void)
{
PyObject *m;
if (PyType_Ready(&pywikidiff2Type) < 0){
PyErr_SetString(PyExc_ImportError,"not pytype ready");
return NULL;
}
m = PyModule_Create(&pywikidiff2);
if (m == NULL){
PyErr_SetString(PyExc_ImportError, "module null");
return NULL;
}
Py_INCREF(&pywikidiff2Type);
if (PyModule_AddObject(m, "pywikidiff2", (PyObject *) &pywikidiff2Type) < 0) {
Py_DECREF(&pywikidiff2Type);
Py_DECREF(m);
PyErr_SetString(PyExc_ImportError,"Could not add object");
return NULL;
}
return m;
}

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setup.py Normal file
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# setup.py
import setuptools
import glob
import os
# You can load existing pyproject.toml configuration if needed,
# or just define the extension directly here.
# Example: Finding C++ sources dynamically
cpp_sources = glob.glob("mediawiki-php-wikidiff2/src/lib/*.cpp", recursive=True) # Finds all .cpp files in src and subdirs
cpp_sources += ["pywikidiff2/pywikidiff2.cpp"]
# Filter out test files or other unwanted files if necessary
# cpp_sources = [f for f in cpp_sources if not "test" in f]
my_extension = setuptools.Extension(
"pywikidiff2",
sources=cpp_sources,
include_dirs=[],
extra_compile_args=["-Wall", "-std=c++17", "-fPIC","-lthai","-lstdc++"],
extra_link_args=["-lthai", "-lstdc++"],
language="c++",
)
setuptools.setup(
# Load metadata from pyproject.toml
# (requires setuptools>=61.0 for declarative config)
# This setup() call essentially acts as a wrapper
ext_modules=[my_extension],
)

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test/test_pywikidiff2.py Normal file
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import pywikidiff2
obj = pywikidiff2.pywikidiff2()
obj = pywikidiff2.pywikidiff2(numContextLines=100000)
print(obj.num_context_lines())
print(obj.moved_line_threshold())
print(obj.change_threshold())
print(obj.moved_paragraph_detection_cutoff())
print(obj.max_split_size())
print(obj.initial_split_threshold())
print(obj.final_split_threshold())
res = obj.inline_json_diff("help! I'm alive", "help! dead I am")
print('\n')
print(res)