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Edit File: textile_doc.rb

module RedCloth
  class TextileDoc < String
    #
    # Accessors for setting security restrictions.
    #
    # This is a nice thing if you're using RedCloth for
    # formatting in public places (e.g. Wikis) where you
    # don't want users to abuse HTML for bad things.
    #
    # If +:filter_html+ is set, HTML which wasn't
    # created by the Textile processor will be escaped.
    # Alternatively, if +:sanitize_html+ is set, 
    # HTML can pass through the Textile processor but
    # unauthorized tags and attributes will be removed.
    #
    # If +:filter_styles+ is set, it will also disable
    # the style markup specifier. ('{color: red}')
    #
    # If +:filter_classes+ is set, it will also disable
    # class attributes. ('!(classname)image!')
    #
    # If +:filter_ids+ is set, it will also disable
    # id attributes. ('!(classname#id)image!')
    #
    attr_accessor :filter_html, :sanitize_html, :filter_styles, :filter_classes, :filter_ids

#
    # Deprecated accessor for toggling hard breaks.
    #
    # Traditional RedCloth converted single newlines
    # to HTML break tags, but later versions required
    # +:hard_breaks+ be set to enable this behavior.
    # +:hard_breaks+ is once again the default.
    #
    attr_accessor :hard_breaks

# Accessor for toggling lite mode.
    #
    # In lite mode, block-level rules are ignored.  This means
    # that tables, paragraphs, lists, and such aren't available.
    # Only the inline markup for bold, italics, entities and so on.
    #
    #   r = RedCloth.new( "And then? She *fell*!", [:lite_mode] )
    #   r.to_html
    #   #=> "And then? She <strong>fell</strong>!"
    #
    attr_accessor :lite_mode

#
    # Accessor for toggling span caps.
    #
    # Textile places `span' tags around capitalized
    # words by default, but this wreaks havoc on Wikis.
    # If +:no_span_caps+ is set, this will be
    # suppressed.
    #
    attr_accessor :no_span_caps

# Returns a new RedCloth object, based on _string_, observing 
    # any _restrictions_ specified.
    #
    #   r = RedCloth.new( "h1. A *bold* man" )
    #     #=> "h1. A *bold* man"
    #   r.to_html
    #     #=>"<h1>A <b>bold</b> man</h1>"
    #
    def initialize( string, restrictions = [] )
      restrictions.each { |r| method("#{r}=").call( true ) }
      super( string )
    end

#
    # Generates HTML from the Textile contents.
    #
    #   RedCloth.new( "And then? She *fell*!" ).to_html
    #     #=>"<p>And then? She <strong>fell</strong>!</p>"
    #
    def to_html( *rules )
      apply_rules(rules)
  
      to(RedCloth::Formatters::HTML)
    end

#
    # Generates LaTeX from the Textile contents.
    #
    #   RedCloth.new( "And then? She *fell*!" ).to_latex
    #     #=> "And then? She \\textbf{fell}!\n\n"
    #
    def to_latex( *rules )
      apply_rules(rules)
  
      to(RedCloth::Formatters::LATEX)
    end

private
    def apply_rules(rules)
      rules.each do |r|
        method(r).call(self) if self.respond_to?(r)
      end
    end
  end
end

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