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- from pyparsing import Optional, oneOf, Literal, Word, printables, Group, OneOrMore, ZeroOrMore
- """
- A simple parser for calendar (*.ics) files,
- as exported by the Mozilla calendar.
- Any suggestions and comments welcome.
- Version: 0.1
- Copyright: Petri Savolainen <firstname.lastname@iki.fi>
- License: Free for any use
- """
- # TERMINALS
- BEGIN = Literal("BEGIN:").suppress()
- END = Literal("END:").suppress()
- valstr = printables + "\xe4\xf6\xe5\xd6\xc4\xc5 "
- EQ = Literal("=").suppress()
- SEMI = Literal(";").suppress()
- COLON = Literal(":").suppress()
- EVENT = Literal("VEVENT").suppress()
- CALENDAR = Literal("VCALENDAR").suppress()
- ALARM = Literal("VALARM").suppress()
- # TOKENS
- CALPROP = oneOf("VERSION PRODID METHOD")
- ALMPROP = oneOf("TRIGGER")
- EVTPROP = oneOf("X-MOZILLA-RECUR-DEFAULT-INTERVAL \
- X-MOZILLA-RECUR-DEFAULT-UNITS \
- UID DTSTAMP LAST-MODIFIED X RRULE EXDATE")
- propval = Word(valstr)
- typeval = Word(valstr)
- typename = oneOf("VALUE MEMBER FREQ UNTIL INTERVAL")
- proptype = Group(SEMI + typename + EQ + typeval).suppress()
- calprop = Group(CALPROP + ZeroOrMore(proptype) + COLON + propval)
- almprop = Group(ALMPROP + ZeroOrMore(proptype) + COLON + propval)
- evtprop = Group(EVTPROP + ZeroOrMore(proptype) + COLON + propval).suppress() \
- | "CATEGORIES" + COLON + propval.setResultsName("categories") \
- | "CLASS" + COLON + propval.setResultsName("class") \
- | "DESCRIPTION" + COLON + propval.setResultsName("description") \
- | "DTSTART" + proptype + COLON + propval.setResultsName("begin") \
- | "DTEND" + proptype + COLON + propval.setResultsName("end") \
- | "LOCATION" + COLON + propval.setResultsName("location") \
- | "PRIORITY" + COLON + propval.setResultsName("priority") \
- | "STATUS" + COLON + propval.setResultsName("status") \
- | "SUMMARY" + COLON + propval.setResultsName("summary") \
- | "URL" + COLON + propval.setResultsName("url") \
- calprops = Group(OneOrMore(calprop)).suppress()
- evtprops = Group(OneOrMore(evtprop))
- almprops = Group(OneOrMore(almprop)).suppress()
- alarm = BEGIN + ALARM + almprops + END + ALARM
- event = BEGIN + EVENT + evtprops + Optional(alarm) + END + EVENT
- events = Group(OneOrMore(event))
- calendar = BEGIN + CALENDAR + calprops + ZeroOrMore(event) + END + CALENDAR
- calendars = OneOrMore(calendar)
- # PARSE ACTIONS
- def gotEvent(s,loc,toks):
- for event in toks:
- print(event.dump())
- event.setParseAction(gotEvent)
- # MAIN PROGRAM
- if __name__=="__main__":
- calendars.parseFile("mozilla.ics")
|