Module: DTC::Utils::Text::HTML

Defined in:
lib/dtc/utils/text/html.rb

Defined Under Namespace

Classes: Writer

Constant Summary collapse

ATTRIBUTE_ALIASES = 
({})
SHORTFORM_TAGS = 
%w[area base basefont br col frame hr img input link meta param]
NOINDENT_TAGS = 
%w[pre textarea]

Class Method Summary collapse

Class Method Details

.attributes(attrs = {}) ⇒ Object 



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# File 'lib/dtc/utils/text/html.rb', line 50

def self.attributes attrs = {}
  unless attrs.nil? || attrs.empty?
    " " + (
      attrs.map do |k, v|
        key = (
          ATTRIBUTE_ALIASES[k] ||
          ATTRIBUTE_ALIASES[k.to_s] ||
          k
        ).to_s
        if v == true
          CGI::escapeHTML(key)
        elsif !v
          nil
        else
          "#{CGI::escapeHTML(key)}='#{CGI::escapeHTML(v.is_a?(Array) ? v.join(" ") : v.to_s)}'"
        end
      end).select {|e| e} .join(" ")
  else
    ""
  end
end

.tag(sym, content = :open_close, attrs = {}) ⇒ Object 



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# File 'lib/dtc/utils/text/html.rb', line 74

def self.tag sym, content = :open_close, attrs = {}
  tag = sym.to_s.split(".")
  nature = :open_close
  content = content.join("") if content.is_a?(Array)
  if content.is_a?(Symbol)
    nature = content unless content == :full
  elsif !content.nil? && content.strip != ""
    nature = :full
  else
    nature = SHORTFORM_TAGS.index(tag.first.downcase) ? :short : :open_close
  end
  tag_header = tag_name = tag.first.to_s
  unless (nature = nature.to_sym) == :close
    if tag.count > 1
      attrs ||= {}
      classes = attrs[:class] || []
      classes = classes.split(/\s+/) if classes.is_a?(String)
      classes += tag.drop(1).to_a
      attrs[:class] = classes.uniq
    end
    tag_header += attributes(attrs) unless nature == :close
  end
  natures = ({:open => %w[< >], :close => ['</', '>'], :short => ['<', ' />'], :open_close => ['<', "></#{tag_name}>"]})
  if nature == :full
    natures[:open].join(tag_header) + content + natures[:close].join(tag_name)
  else
    raise RuntimeError, "Unknown tag nature #{nature.inspect}, should be one of #{natures.keys.to_a.inspect}" unless natures[nature]
    natures[nature].join(tag_header)
  end
end