Using the Pull Parser
This API is experimental, and subject to change.
parser = PullParser.new( "<a>text<b att='val'/>txet</a>" )
while parser.has_next?
res = parser.next
puts res[1]['att'] if res.start_tag? and res[0] == 'b'
end
See the PullEvent class for information on the
content of the results. The data is identical to the arguments passed for
the various events to the StreamListener API.
Notice that:
parser = PullParser.new( "<a>BAD DOCUMENT" )
while parser.has_next?
res = parser.next
raise res[1] if res.error?
end
Nat Price gave me some good ideas for the API.
Peek at the depth event in the stack. The first element on the
stack is at depth 0. If depth is -1, will parse to the end of the
input stream and return the last event, which is always :end_document. Be aware that this
causes the stream to be parsed up to the depth event, so you can
effectively pre-parse the entire document (pull the entire thing into
memory) using this method.