Module: Haml::Compiler

Defined in:
lib/haml2handlebars/engine.rb

Class Method Summary collapse

Class Method Details

.build_attributes(is_html, attr_wrapper, escape_attrs, attributes = {}) ⇒ Object 



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# File 'lib/haml2handlebars/engine.rb', line 12

def self.build_attributes(is_html, attr_wrapper, escape_attrs, attributes = {})
  quote_escape = attr_wrapper == '"' ? """ : "'"
  other_quote_char = attr_wrapper == '"' ? "'" : '"'

  if attributes['data'].is_a?(Hash)
    attributes = attributes.dup
    attributes =
      Haml::Util.map_keys(attributes.delete('data')) {|name| "data-#{name}"}.merge(attributes)
  end

  result = attributes.collect do |attr, value|
    next if value.nil?

    value = filter_and_join(value, ' ') if attr == 'class'
    value = filter_and_join(value, '_') if attr == 'id'

    if value == true
      next " #{attr}" if is_html
      next " #{attr}=#{attr_wrapper}#{attr}#{attr_wrapper}"
    elsif value == false
      next
    end

    escaped =
      if escape_attrs == :once
        Haml::Helpers.escape_once(value.to_s)
      elsif escape_attrs
        Haml::Helpers.html_escape(value.to_s)
      else
        value.to_s
      end
    value = Haml::Helpers.preserve(escaped)
    if escape_attrs
      # We want to decide whether or not to escape quotes
      value = value.gsub('"', '"')
      this_attr_wrapper = attr_wrapper
      if value.include? attr_wrapper
        if value.include? other_quote_char
          value = value.gsub(attr_wrapper, quote_escape)
        else
          this_attr_wrapper = other_quote_char
        end
      end
    else
      this_attr_wrapper = attr_wrapper
    end

    if attr =~ /^hb-/
      attr = attr[3..-1]
      " {{#{attr} #{value}}}"
    else
      " #{attr}=#{this_attr_wrapper}#{value}#{this_attr_wrapper}"
    end
  end
  result.compact.sort.join
end