import cython

from libc.stdlib cimport malloc
from libc.stdlib cimport free

cdef extern from "librns510.h":
	void librns510_encode(const char *lat, const char *lon, char *code)
cdef extern from "librns510.h":
	char *librns510_decode(const char *code, char *lat, char *lon)

def encode(char *lat, char *lon):
	assert lat is not NULL
	assert lon is not NULL
	cdef bytes py_string
	cdef char *out

	out=<char *> malloc(128)
	librns510_encode(lat,lon,out)
	try:
		py_string=out
	finally:
		free(out)

	return py_string

def decode(char *code):
	assert code is not NULL
	cdef bytes py_lat
	cdef bytes py_lon
	cdef char *lat
	cdef char *lon

	lat=<char *> malloc(128)
	lon=<char *> malloc(128)
	librns510_decode(code,lat,lon)
	try:
		py_lat=lat
	finally:
		free(lat)

	try:
		py_lon=lon
	finally:
		free(lon)

	return py_lat,py_lon