-
-
-class InvalidICS(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 [unicode(x, 'utf-8') for x in 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 = line.encode('utf-8')
- # Line fits inside length, do nothing
- if len(line.rstrip()) <= length:
- cal.append(line)
- else:
- brokenline = [line[0:length]]
- ll = length
- while ll < len(line) + 1:
- brokenline.append(line[ll:sl+ll])
- ll += sl
- brokenline = '\r\n '.join(brokenline)
- cal.append(brokenline)
-
- return cal
-
-
-def splitFields(cal):
- '''Takes a list of lines in a calendar file and returns a list of tuples
- as (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
-
-
-def joinFields(ical):
- '''Takes a list of tuples that make up a calendar file and returns it to a
- list of lines'''
-
- return [':'.join(x) for x in ical]