Method: Deface::Parser.erb_markup!

Defined in:
lib/deface/parser.rb

.erb_markup!(source) ⇒ Object

converts erb to markup



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# File 'lib/deface/parser.rb', line 8

def self.erb_markup!(source)

  #all opening html tags that contain <% %> blocks
  source.scan(/<\w+[^<>]+(?:<%.*?%>[^<>]*)+/m).each do |line|

    #regexs to catch <% %> inside attributes id="<% something %>" - with double, single or no quotes
    erb_attrs_regexs = [/([\w-]+)(\s?=\s?)(")([^"]*<%.*?%>[^"]*)/m,
      /([\w-]+)(\s?=\s?)(')([^']*<%.*?%>[^']*)'/m,
      /([\w-]+)(\s?=\s?)()(<%.*?%>)(?:\s|>|\z)/m]

    replace_line = erb_attrs_regexs.inject(line.clone) do |replace_line, regex|

      replace_line = line.scan(regex).inject(replace_line) do |replace_line, match|
        replace_line.sub("#{match[0]}#{match[1]}#{match[2]}#{match[3]}#{match[2]}") { |m| m = " data-erb-#{match[0]}=\"#{CGI.escapeHTML(match[3])}\"" }
      end

      replace_line
    end

    i = -1
    #catch all <% %> inside tags id <p <%= test %>> , not inside attrs
    replace_line.scan(/(<%.*?%>)/m).each do |match|
      replace_line.sub!(match[0]) { |m| m = " data-erb-#{i += 1}=\"#{CGI.escapeHTML(match[0])}\"" }
    end

    source.sub!(line) { |m| m = replace_line }
  end

  #replaces all <% %> not inside opening html tags
  replacements = [ {"<%=" => "<erb loud>"},
                   {"<%"  => "<erb silent>"},
                   {"%>"  => "</erb>"} ]

  replacements.each{ |h| h.each { |replace, with| source.gsub! replace, with } }

  source.scan(/(<erb.*?>)((?:(?!<\/erb>)[\s\S])*)(<\/erb>)/).each do |match|
    source.sub!("#{match[0]}#{match[1]}#{match[2]}") { |m| m = "#{match[0]}#{CGI.escapeHTML(match[1])}#{match[2]}" }
  end

  source
end