iCal4j and newlines
I'm trying to read a calendar feed from http://meetup.com/, but it seems that iCal4j is unable to deal with linebreaks in X-ORIGINAL-URL attributes: it fails on this line:
X-ORIGINAL-URL:http://www.meetup.com/chicagoscala/calendar/ical/The+Chicago
-Area+Scala+Enthusiasts+(CASE)+Meetup+Group/
with this exception:
net.fortuna.ical4j.data.ParserException: Error at line 7: Illegal property [ -AREA+SCALA+ENTHUSIASTS+(CASE)+MEETUP+GROUP/]
at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:133)
at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:174)
at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:155)
I filed a bug for it, but I didn't get any response yet. Is this a known problem?
BTW, this is a snippet of a hexdump of that file:
00000060 4e 0a 58 2d 4f 52 49 47 49 4e 41 4c 2d 55 52 4c |N.X-ORIGINAL-URL|
00000070 3a 68 74 74 70 3a 2f 2f 77 77 77 2e 6d 65 65 74 |:http://www.meet|
00000080 75 70 2e 63 6f 6d 2f 63 68 69 63 6开发者_JAVA百科1 67 6f 73 63 |up.com/chicagosc|
00000090 61 6c 61 2f 63 61 6c 65 6e 64 61 72 2f 69 63 61 |ala/calendar/ica|
000000a0 6c 2f 54 68 65 2b 43 68 69 63 61 67 6f 0a 20 2d |l/The+Chicago. -|
000000b0 41 72 65 61 2b 53 63 61 6c 61 2b 45 6e 74 68 75 |Area+Scala+Enthu|
000000c0 73 69 61 73 74 73 2b 28 43 41 53 45 29 2b 4d 65 |siasts+(CASE)+Me|
Ok, passing in an UnfoldingReader yourself seems to do the trick. If you set the buffer size large enough, it will be able to restore the value correctly. Strange.
reader = new UnfoldingReader(new InputStreamReader(uri.toURL().openStream()), 3000);
return new CalendarBuilder().build(reader);
I also set ical4j.properties to this:
ical4j.unfolding.relaxed=true
Not sure if that made a huge difference, but at least it works.
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