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
+
+
def getContent(url='',stdin=False):
'''Generic content retriever, DO NOT use this function in a CGI script as
it can read from the local disk (which you probably don't want it to).
res = urllib2.urlopen(url)
content = res.read()
res.close()
- except (urllib2.URLError, ValueError), e:
+ except (urllib2.URLError, OSError), e:
sys.stderr.write('%s\n'%e)
sys.exit(1)
return content
try:
content = urllib2.urlopen(url).read()
return content
- except urllib2.URLError, e:
+ except (urllib2.URLError, OSError), e:
sys.stderr.write('%s\n'%e)
sys.exit(1)
return ''
+
+def generateRules():
+ '''Attempts to load a series of rules into a list'''
+ try:
+ import parserrules
+ except ImportError:
+ return []
+
+ rules = [getattr(parserrules, rule) for rule in dir(parserrules) if callable(getattr(parserrules, rule))]
+ return rules
+
+
+def applyRules(ical, rules=[], verbose=False):
+ 'Runs a series of rules on the lines in ical and mangles its output'
+
+ for rule in rules:
+ output = []
+ if rule.__doc__ and verbose:
+ print(rule.__doc__)
+ for line in ical:
+ try:
+ out = rule(line[0],line[1])
+ except TypeError, e:
+ output.append(line)
+ print(e)
+ continue
+
+ # Drop lines that are boolean False
+ if not out and not out == None: continue
+
+ # If the rule did something and is a tuple or a list we'll accept it
+ # otherwise, pay no attention to the man behind the curtain
+ try:
+ if tuple(out) == out or list(out) == out and len(out) == 2:
+ output.append(tuple(out))
+ else:
+ output.append(line)
+ except TypeError, e:
+ output.append(line)
+
+ ical = output
+
+ return ical
+
if __name__ == '__main__':
from optparse import OptionParser
# If the user passed us a 'stdin' argument, we'll go with that,
content = getContent(url, options.stdin)
cal = lineJoiner(content)
- print cal
+ ical = applyRules(splitFields(cal), generateRules())
+ print ical