--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/python-zstandard/c-ext/constants.c	Thu Nov 10 22:15:58 2016 -0800
@@ -0,0 +1,84 @@
+/**
+* Copyright (c) 2016-present, Gregory Szorc
+* All rights reserved.
+*
+* This software may be modified and distributed under the terms
+* of the BSD license. See the LICENSE file for details.
+*/
+
+#include "python-zstandard.h"
+
+extern PyObject* ZstdError;
+
+static char frame_header[] = {
+	'\x28',
+	'\xb5',
+	'\x2f',
+	'\xfd',
+};
+
+void constants_module_init(PyObject* mod) {
+	PyObject* version;
+	PyObject* zstdVersion;
+	PyObject* frameHeader;
+
+#if PY_MAJOR_VERSION >= 3
+	version = PyUnicode_FromString(PYTHON_ZSTANDARD_VERSION);
+#else
+	version = PyString_FromString(PYTHON_ZSTANDARD_VERSION);
+#endif
+	Py_INCREF(version);
+	PyModule_AddObject(mod, "__version__", version);
+
+	ZstdError = PyErr_NewException("zstd.ZstdError", NULL, NULL);
+	PyModule_AddObject(mod, "ZstdError", ZstdError);
+
+	/* For now, the version is a simple tuple instead of a dedicated type. */
+	zstdVersion = PyTuple_New(3);
+	PyTuple_SetItem(zstdVersion, 0, PyLong_FromLong(ZSTD_VERSION_MAJOR));
+	PyTuple_SetItem(zstdVersion, 1, PyLong_FromLong(ZSTD_VERSION_MINOR));
+	PyTuple_SetItem(zstdVersion, 2, PyLong_FromLong(ZSTD_VERSION_RELEASE));
+	Py_IncRef(zstdVersion);
+	PyModule_AddObject(mod, "ZSTD_VERSION", zstdVersion);
+
+	frameHeader = PyBytes_FromStringAndSize(frame_header, sizeof(frame_header));
+	if (frameHeader) {
+		PyModule_AddObject(mod, "FRAME_HEADER", frameHeader);
+	}
+	else {
+		PyErr_Format(PyExc_ValueError, "could not create frame header object");
+	}
+
+	PyModule_AddIntConstant(mod, "MAX_COMPRESSION_LEVEL", ZSTD_maxCLevel());
+	PyModule_AddIntConstant(mod, "COMPRESSION_RECOMMENDED_INPUT_SIZE",
+		(long)ZSTD_CStreamInSize());
+	PyModule_AddIntConstant(mod, "COMPRESSION_RECOMMENDED_OUTPUT_SIZE",
+		(long)ZSTD_CStreamOutSize());
+	PyModule_AddIntConstant(mod, "DECOMPRESSION_RECOMMENDED_INPUT_SIZE",
+		(long)ZSTD_DStreamInSize());
+	PyModule_AddIntConstant(mod, "DECOMPRESSION_RECOMMENDED_OUTPUT_SIZE",
+		(long)ZSTD_DStreamOutSize());
+
+	PyModule_AddIntConstant(mod, "MAGIC_NUMBER", ZSTD_MAGICNUMBER);
+	PyModule_AddIntConstant(mod, "WINDOWLOG_MIN", ZSTD_WINDOWLOG_MIN);
+	PyModule_AddIntConstant(mod, "WINDOWLOG_MAX", ZSTD_WINDOWLOG_MAX);
+	PyModule_AddIntConstant(mod, "CHAINLOG_MIN", ZSTD_CHAINLOG_MIN);
+	PyModule_AddIntConstant(mod, "CHAINLOG_MAX", ZSTD_CHAINLOG_MAX);
+	PyModule_AddIntConstant(mod, "HASHLOG_MIN", ZSTD_HASHLOG_MIN);
+	PyModule_AddIntConstant(mod, "HASHLOG_MAX", ZSTD_HASHLOG_MAX);
+	PyModule_AddIntConstant(mod, "HASHLOG3_MAX", ZSTD_HASHLOG3_MAX);
+	PyModule_AddIntConstant(mod, "SEARCHLOG_MIN", ZSTD_SEARCHLOG_MIN);
+	PyModule_AddIntConstant(mod, "SEARCHLOG_MAX", ZSTD_SEARCHLOG_MAX);
+	PyModule_AddIntConstant(mod, "SEARCHLENGTH_MIN", ZSTD_SEARCHLENGTH_MIN);
+	PyModule_AddIntConstant(mod, "SEARCHLENGTH_MAX", ZSTD_SEARCHLENGTH_MAX);
+	PyModule_AddIntConstant(mod, "TARGETLENGTH_MIN", ZSTD_TARGETLENGTH_MIN);
+	PyModule_AddIntConstant(mod, "TARGETLENGTH_MAX", ZSTD_TARGETLENGTH_MAX);
+
+	PyModule_AddIntConstant(mod, "STRATEGY_FAST", ZSTD_fast);
+	PyModule_AddIntConstant(mod, "STRATEGY_DFAST", ZSTD_dfast);
+	PyModule_AddIntConstant(mod, "STRATEGY_GREEDY", ZSTD_greedy);
+	PyModule_AddIntConstant(mod, "STRATEGY_LAZY", ZSTD_lazy);
+	PyModule_AddIntConstant(mod, "STRATEGY_LAZY2", ZSTD_lazy2);
+	PyModule_AddIntConstant(mod, "STRATEGY_BTLAZY2", ZSTD_btlazy2);
+	PyModule_AddIntConstant(mod, "STRATEGY_BTOPT", ZSTD_btopt);
+}