-
-
-class InvalidICS(Exception): pass
-class notJoined(Exception): pass
-class IncompleteICS(InvalidICS): pass
-
-
-def lineJoiner(oldcal):
- '''Takes a string containing a calendar and returns an array of its lines'''
-
- if not oldcal[0:15] == 'BEGIN:VCALENDAR':
- raise InvalidICS, "Does not appear to be a valid ICS file"
-
- if not 'END:VCALENDAR' in oldcal[-15:-1]:
- raise IncompleteICS, "File appears to be incomplete"
-
- if list(oldcal) == oldcal:
- oldcal = '\r\n'.join(oldcal)
-
- oldcal = oldcal.replace('\r\n ', '').replace('\r\n\t','')
- return oldcal.strip().split('\r\n')
-
-
-def lineFolder(oldcal, length=75):
- '''Folds content lines to a specified length, returns a list'''
-
- if length > 75:
- sys.stderr.write('WARN: lines > 75 octets are not RFC compliant\n')
-
- cal = []
- sl = length - 1
-
- for line in oldcal:
- # Line fits inside length, do nothing
- if len(line.rstrip()) <= length:
- cal.append(line)
- else:
- brokenline = [line[0:length] + '\r\n']
- ll = length
- while ll < len(line.rstrip('\r\n')) + 1:
- brokenline.append(' ' + line[ll:sl+ll].rstrip('\r\n') + '\r\n')
- ll += sl
- cal += brokenline
-
- return cal
-
-
-def splitFields(cal):
- '''Takes a list of lines in a calendar file and returns a list of key, value pairs'''
-
- ical = [tuple(x.split(':',1)) for x in cal]
-
- # Check that we got 2 items on every line
- for line in ical:
- if not len(line) == 2:
- raise InvalidICS, "Didn't find a content key on: %s"%(line)
-
- return ical