Add python bindings + package (#10)

* wip : python package

* wip : minor fixes

* wip : upload package to main pypi

* wip : initial text encoding

* wip : extending C api

* wip : use map of global instances

* wip : added decode functionality

* update main README

bindings/python/Makefile

@@ -0,0 +1,41 @@
+default: build
+
+.PHONY:
+ggwave:
+	# create a clean (maybe updated) copy of ggwave src
+	rm -rf ggwave && mkdir ggwave && cp -r ../../include ggwave/ && cp -r ../../src ggwave/
+
+pyggwave.bycython.cpp: ggwave.pyx cggwave.pxd
+	python -m pip install cython
+	cython --cplus ggwave.pyx -o ggwave.bycython.cpp
+
+# To build package, README.rst is needed, because it goes into long description of package,
+# which is what is visible on PyPI.
+# However, to generate README.rst from README-tmpl.rst, built package is needed (for `import ggwave` in cog)!
+# Therefore, we first build package without README.rst, use it to generate README.rst,
+# and then finally build package again but with README.rst.
+
+BUILD_SOURCE_FILES=ggwave pyggwave.bycython.cpp setup.py
+
+buildWithoutREADME.rst: ${BUILD_SOURCE_FILES}
+	GGWAVE_OMIT_README_RST=1 python setup.py build_ext -i
+
+README.rst: buildWithoutREADME.rst README-tmpl.rst
+	python -m pip install cogapp
+	cog -d -o README.rst README-tmpl.rst
+
+BUILD_FILES=${BUILD_SOURCE_FILES} README.rst
+
+build: ${BUILD_FILES}
+	python setup.py build_ext -i
+
+sdist: ggwave pyggwave.bycython.cpp setup.py README.rst MANIFEST.in
+	python setup.py sdist
+
+publish: clean sdist
+	twine upload --repository pypi dist/*
+
+clean:
+	rm -rf ggwave dist ggwave.egg-info build
+	rm -f ggwave.c *.bycython.* ggwave.*.so
+	rm -f README.rst