# By Henrik Nyh <http://henrik.nyh.se> 2007-03-28.
# Based on http://vemod.net/code/hpricot_goodies/hpricot_text_gsub.rb.
# Licensed under the same terms as Ruby.

require "hpricot"

module HpricotTextTransform
    module NodeWithChildrenExtension
    
        #
        #
        def text_transform!(options={}, &block)
            return if defined?(name) and Array(options[:except]).include?(name.to_sym)
            children.each { |c| c.text_transform!(options, &block) }
        end
    end
  
    module TextNodeExtension
        
        #
        #
        def text_transform!(options={}, &block)
        content.replace yield(content)
        end
        
    end


    module BogusETagExtension
    
        #
        #
        def text_transform!(options={}, &block)
        end
        
    end
  
end

Hpricot::Doc.send(:include,  HpricotTextTransform::NodeWithChildrenExtension)
Hpricot::Elem.send(:include, HpricotTextTransform::NodeWithChildrenExtension)
Hpricot::BogusETag.send(:include, HpricotTextTransform::BogusETagExtension)
Hpricot::Text.send(:include, HpricotTextTransform::TextNodeExtension)