#!/usr/bin/python
#
# Converter for SMSs 
# backed up on Symbian by MsgExport 
# to be restored on Android by SMS Backup & Restore
#
# 1/ On Symbian use MsgExport app (from tinyhack.com), select TXT format
# 2/ Transfer resulting txt file (SmsByDate is enough) from Nokia (if you
# have SD card from its \SMSLOG, if not, from memory \DATA\SMSLOG)
# 3/ Convert file on any machine with python (did not test on windows, though):
# ./MsgExport2SMSBackupRestore.py < SmsByDate2010-01-18.txt > sms-20100118.xml
# 4/ Transfer resulting xml file to Android SD card to /SMSBackupRestore dir
# 5/ On Android use SMS Backup & Restore app to restore SMS-es from this xml
#
# Note: MsgExport CSV format is not usable, it mixes received and sent SMSs.
#
# contact Piotr Kucharski for bugfixes (provide input .txt)

import sys
import re
import time

TEL = re.compile('.*\((?P<tel>\+*[0-9]*)\)')
DAY = re.compile('(?P<num>[0-9]+)(st|nd|rd|th)')

txt = []
splittel = False

type = None
SMS_RECV = 1
SMS_SENT = 2

def Sms(type, tel, date, txt):
  body = '%s' % ' '.join(txt)
  # poor man's xml quoting
  body = body.replace('&', '&amp;').replace('"', '&quot;')
  body = body.replace('>', '&gt;').replace('<', '&lt;')

  print('  <sms protocol="0"'),
  print('address="%s"' % tel),
  # SMS B&R needs timestamp in miliseconds
  print('date="%s000"' % date),
  # sent or received
  print('type="%d"' % type),
  print('subject="null" body="%s"' % body),
  print('toa="null" sc_toa="null" service_center="null"'),
  print('read="1" status="-1" />')

# header
print("""<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
<smses>""")

for line in sys.stdin.readlines():
  line = line.strip()

  # small workaround for contacts with an embedded newline
  # (we just search for tel in next line)
  if splittel:
    m = TEL.match(line)
    if m:
      tel = m.group('tel')
      splittel = False 
    continue

  if line.startswith('To: ') or line.startswith('From: '):
    if txt:
      Sms(type, tel, date, txt)
    # and start over
    txt = []
    tel = None
    date = None
    if line.startswith('From: '):
      type = SMS_RECV
    elif line.startswith('To: '):
      type = SMS_SENT

    m = TEL.match(line)
    if m:
      tel = m.group('tel')
    else:
      splittel = True
    continue

  # ignore empty lines
  if not line:
    continue

  # ignore garbage from begin of file
  if not type:
    continue

  if line.startswith('Date: '):
    # stupid "th"
    # 6th May 2009 3:52:29 pm
    day, date = line[6:].split(' ', 1)
    m = DAY.match(day)
    if m:
      day = m.group('num')
    date = '%s %s' % (day, date)
    date = int(time.mktime((time.strptime(date, "%d %B %Y %I:%M:%S %p"))))
    continue

  # Android has no concept of folders, all SMSs are threaded by number
  if line.startswith('Folder:'):
    folder = True
    continue
  if folder:
    # this line contains folder name
    folder = False
    continue

  # it seems like it is always one line, but hey.
  txt.append(line)

if txt:
  Sms(type, tel, date, txt)

print("</smses>")