from demo2 import Demo
from demparse import Time
import sys, os

def fr(fname):
    ts = []
    for block in Demo(fname):
        for message in block.filtered((Time.code,)):
            ts.append(message.time)
    dts = []
    for i in range(1, len(ts)):
        if ts[i] - ts[i-1]:
            dts.append((ts[i], 1/(ts[i] - ts[i-1])))
    return dts, sum([d[1] for d in dts])/len(dts)
            

def main(argv):
    plot = False
    while '--plot' in argv:
        plot = True
        argv.remove('--plot')
    for fname in argv:
        ts, f = fr(fname)
        if plot:
            o = open('f.txt', 'w')
            for t, d in ts:
                print >>o, t, d
            o.close()
            os.system('''gnuplot << EOF
set terminal aqua 0 title "%s"
plot "f.txt" title "%s"
EOF'''%(fname, fname))
        print fname, f

if __name__ == '__main__':
    main(sys.argv[1:])