#!/usr/bin/python
#
#utility to remove 'activity' from .html files and replace with horizontal rule tag
from path import path
import os, sys, subprocess
from optparse import OptionParser

SOURCE = path('../')

parser = OptionParser(usage="Usage: %prog [options] file")
(options, args) = parser.parse_args()
if not args:
    print 'Specify a course and milestone, e.g. zs5 zs5m08'
    parser.print_help()
    sys.exit(1)

SUBJECT = args[0]
COURSE = args[1]
MILESTONE = args[2]
tag = '<hr />'
basepath = SOURCE / SUBJECT / COURSE / MILESTONE
files = basepath.files('*.html')
file = files[0]
fin = open(basepath / file.name,'r')
txt = fin.read()
fin.close()
pos = txt.find('Activity')
count = 0
while pos > -1:
    pos1 = txt.find('<CENTER>')
    pos2 = txt.find('</CENTER>')
    if pos1 < 0 or pos2 < 0:
        pos = -1
        continue
    if count < 1:
        txt = txt[:pos1]+txt[pos2+9:]
    else:
        txt = txt[:pos1] + '<hr />' + txt[pos2+9:]
    count += 1
    pos = txt.find('Activity')
    print count, pos, len(txt)
fout = open(basepath / MILESTONE+'.html','w')
fout.write(txt)
fout.close