### Home Classes Methods

### In Files

- lib/xmpp4r/streamparser.rb

### Parent

Object

### Methods

- ::new
- #parse

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No matching classes.

# Jabber::StreamParser

The StreamParser uses REXML to parse the incoming XML stream of the Jabber protocol and fires XMPPStanza at the Connection instance.

### Attributes

started[R]

status if the parser is started

### Public Class Methods

new(stream, listener) click to toggle source

Constructs a parser for the supplied stream (socket input)

stream

IO

  Socket input stream

listener

Object.receive(XMPPStanza)

  The listener (usually a Jabber::Protocol::Connection instance)

    # File lib/xmpp4r/streamparser.rb, line 26
    def initialize(stream, listener)
      @stream = stream
      @listener = listener
      @current = nil
    end

### Public Instance Methods

parse() click to toggle source

Begins parsing the XML stream and does not return until the stream closes.

    # File lib/xmpp4r/streamparser.rb, line 36
    def parse
      @started = false
      begin
        parser = REXML::Parsers::SAX2Parser.new @stream

        parser.listen( :start_element ) do |uri, localname, qname, attributes|
          e = REXML::Element.new(qname)
          if attributes.kind_of? Hash
            unnormalized_attributes = {}
            attributes.each_pair do |key, value|
              unnormalized_attributes[key] = REXML::Text::unnormalize(value)
            end
          elsif attributes.kind_of? Array
            unnormalized_attributes = []
            attributes.each do |value|
              unnormalized_attributes << [value[0], REXML::Text::unnormalize(value[1])]
            end
          end

          e.add_attributes unnormalized_attributes
          @current = @current.nil? ? e : @current.add_element(e)

          # Handling <stream:stream> not only when it is being
          # received as a top-level tag but also as a child of the
          # top-level element itself. This way, we handle stream
          # restarts (ie. after SASL authentication).
          if @current.name == 'stream' and @current.parent.nil?
            @started = true
            @listener.receive(@current)
            @current = nil
          end
        end

        parser.listen( :end_element ) do  |uri, localname, qname|
          if qname == 'stream:stream' and @current.nil?
            @started = false
            @listener.parser_end
          else
            @listener.receive(@current) unless @current.parent
            @current = @current.parent
          end
        end

        parser.listen( :end_document ) do
          raise Jabber::ServerDisconnected, "Server Disconnected!"
        end

        parser.listen( :characters ) do | text |
          @current.add(REXML::Text.new(text.to_s, @current.whitespace, nil, true)) if @current
        end

        parser.listen( :cdata ) do | text |
          @current.add(REXML::CData.new(text)) if @current
        end

        parser.parse
      rescue REXML::ParseException => e
        @listener.parse_failure(e)
      end
    end

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