Class: Raw::MorphFilter::Listener

Inherits:
Object
  • Object
show all
Includes:
REXML::StreamListener
Defined in:
lib/raw/compiler/filter/morph.rb

Overview

– The listener used to parse the xml stream. TODO: add support for morphing comments, text, etc. ++

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filter) ⇒ Listener

Returns a new instance of Listener.



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# File 'lib/raw/compiler/filter/morph.rb', line 27

def initialize(filter)
  super()
  @filter = filter
  @buffer = ""
  @stack = []
end

Instance Attribute Details

#buffer ⇒ Object

Returns the value of attribute buffer.



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# File 'lib/raw/compiler/filter/morph.rb', line 25

def buffer
  @buffer
end

Instance Method Details

#cdata(content) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 65

def cdata(content)
  @buffer << "<![CDATA[#{content}]]>"
end

#comment(c) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 69

def comment(c)
  unless Template.strip_xml_comments
    @buffer << "<!--#{c}-->"
  end
end

#doctype(name, pub_sys, long_name, uri) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 75

def doctype(name, pub_sys, long_name, uri)   
  @buffer << "<!DOCTYPE #{name} #{pub_sys} #{long_name} #{uri}>\n"
end

#emit_end(name) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 84

def emit_end(name)
  "</#{name}>"
end

#emit_start(name, attributes) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 79

def emit_start(name, attributes)
  attrs = attributes.map{ |k, v| %|#{k}="#{v}"| }.join(' ')
  attrs.blank? ? "<#{name}>" : "<#{name} #{attrs}>"
end

#instruction(name, attributes) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 61

def instruction(name, attributes)
  @buffer << "<?#{name}#{attributes}?>"
end

#tag_end(name) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 50

def tag_end(name)    
  morphers = @stack.pop
  morphers.reverse.each { |h| h.before_end(@buffer) }
  @buffer << emit_end(name)
  morphers.reverse.each { |h| h.after_end(@buffer) }
end

#tag_start(name, attributes) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 34

def tag_start(name, attributes)    
  morphers = []
  
  for morpher_class in @filter.morphers
    if attributes.has_key? morpher_class.key
      morphers << morpher_class.new(name, attributes)
    end
  end
  
  morphers.each { |h| h.before_start(@buffer) }
  @buffer << emit_start(name, attributes)
  morphers.each { |h| h.after_start(@buffer) }

  @stack.push(morphers)      
end

#text(str) ⇒ Object 



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# File 'lib/raw/compiler/filter/morph.rb', line 57

def text(str)
  @buffer << str
end