mapswithme_track_gpx.py

from collections import namedtuple
import struct
import sys
from enum import Enum
from datetime import datetime, date, time

class PointSource(Enum):
	EAppleNative=0
	EWindowsNative=1
	EAndroidNative=2
	EGoogle=3
	ETizen=4
	EPredictor=5


Point = namedtuple("Point", "timestamp latitude longitude altitude speed bearing horizontalAccuracy verticalAccuracy source")

PointPattern = '<ddddddddB'
PointPackSize = struct.calcsize(PointPattern)
HeaderSize = 4

print("<?xml version=\"1.0\" encoding=\"UTF-8\"?>")
print("<gpx version=\"1.0\">")
print("<name>gpx</name>")
print("<trk><name>gpx</name><number>1</number><trkseg>")
	
with open(sys.argv[1], 'rb') as f:
	data_input = f.read()
	raw_points = data_input[HeaderSize:HeaderSize+PointPackSize*((len(data_input)-4)//PointPackSize)]
	for rawPoint in struct.iter_unpack(PointPattern, raw_points):
		point = Point(*rawPoint[:-1], PointSource(rawPoint[-1]))
		print('<trkpt lat="'+str(point.latitude)+'" lon="'+str(point.longitude)+'"><fix>3d</fix><ele>'+str(point.altitude)+'</ele><time>'+datetime.utcfromtimestamp(point.timestamp).strftime('%Y-%m-%dT%H:%M:%SZ')+'</time></trkpt>')
		
print("</trkseg></trk>")
print("</gpx>")