1 files changed, 81 insertions, 0 deletions
diff --git a/examples/mozillaCalendarParser.py b/examples/mozillaCalendarParser.py
new file mode 100644
index 0000000..210f284
--- /dev/null
+++ b/examples/mozillaCalendarParser.py
@@ -0,0 +1,81 @@
+from pyparsing import Optional, oneOf, Dict, 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")