lib/urlwatch/ical2txt.py

   1 #!/usr/bin/python
   2 # Convert iCalendar data to plaintext (very basic, don't rely on it :)
   3 # Requirements: python-vobject (http://vobject.skyhouseconsulting.com/)
   4 # This file is part of urlwatch
   5 #
   6 # Copyright (c) 2008-2010 Thomas Perl <thp.io/about>
   7 # All rights reserved.
   8 #
   9 # Redistribution and use in source and binary forms, with or without
  10 # modification, are permitted provided that the following conditions
  11 # are met:
  12 # 1. Redistributions of source code must retain the above copyright
  13 #    notice, this list of conditions and the following disclaimer.
  14 # 2. Redistributions in binary form must reproduce the above copyright
  15 #    notice, this list of conditions and the following disclaimer in the
  16 #    documentation and/or other materials provided with the distribution.
  17 # 3. The name of the author may not be used to endorse or promote products
  18 #    derived from this software without specific prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30
  31
  32 def ical2text(ical_string):
  33     import vobject
  34     result = []
  35     if isinstance(ical_string, unicode):
  36         parsedCal = vobject.readOne(ical_string)
  37     else:
  38         try:
  39             parsedCal = vobject.readOne(ical_string)
  40         except:
  41             parsedCal = vobject.readOne(ical_string.decode('utf-8', 'ignore'))
  42
  43     for event in parsedCal.getChildren():
  44         if event.name == 'VEVENT':
  45             if hasattr(event, 'dtstart'):
  46                 start = event.dtstart.value.strftime('%F %H:%M')
  47             else:
  48                 start = 'unknown start date'
  49
  50             if hasattr(event, 'dtend'):
  51                 end = event.dtend.value.strftime('%F %H:%M')
  52             else:
  53                 end = start
  54
  55             if start == end:
  56                 date_str = start
  57             else:
  58                 date_str = '%s -- %s' % (start, end)
  59
  60             result.append('%s: %s' % (date_str, event.summary.value))
  61
  62     return '\n'.join(result)
  63
  64
  65 if __name__ == '__main__':
  66     import sys
  67
  68     if len(sys.argv) == 2:
  69         print ical2text(open(sys.argv[1]).read())
  70     else:
  71         print 'Usage: %s icalendarfile.ics' % (sys.argv[0])
  72         sys.exit(1)
  73