Class: Deface::DSL::Loader

Inherits:
Object
  • Object
show all
Defined in:
lib/deface/dsl/loader.rb

Class Method Summary collapse

Class Method Details

.extract_dsl_commands_from_erb(html_file_contents) ⇒ Object 



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# File 'lib/deface/dsl/loader.rb', line 62

def self.extract_dsl_commands_from_erb(html_file_contents)
  dsl_commands = ''

  while starts_with_html_comment?(html_file_contents)
    first_open_comment_index = html_file_contents.lstrip.index('<!--')
    first_close_comment_index = html_file_contents.index('-->')

    unless first_close_comment_index.nil?
      comment = html_file_contents[first_open_comment_index..first_close_comment_index+2]
    end

    comment.gsub('<!--', '').gsub('-->', '').strip.scan(/[^\s"']+|"[^"]*"|'[^']*'/).each do |part|

      dsl_commands =~ /('|")\z/ || part =~ /\A[^\d:='"%]/ ? dsl_commands << "\n" : dsl_commands << ' '
      dsl_commands << part
    end

    html_file_contents = html_file_contents.gsub(comment, '')
  end

  [dsl_commands, html_file_contents]
end

.extract_dsl_commands_from_haml(file_contents) ⇒ Object Also known as: extract_dsl_commands_from_slim 



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# File 'lib/deface/dsl/loader.rb', line 85

def self.extract_dsl_commands_from_haml(file_contents)
  dsl_commands = ''

  while starts_with_haml_comment?(file_contents)
    first_open_comment_index = file_contents.lstrip.index('/')
    first_close_comment_index = file_contents.index("\n")

    unless first_close_comment_index.nil?
      comment = file_contents[first_open_comment_index..first_close_comment_index]
    end

    dsl_commands << comment.gsub('/', '').strip + "\n"

    file_contents = file_contents.gsub(comment, '')

    while file_contents.start_with?(' ')
      first_newline_index = file_contents.index("\n")
      comment = file_contents[0..first_newline_index]
      dsl_commands << comment.gsub('/', '').strip + "\n"
      file_contents = file_contents.gsub(comment, '')
    end
  end

  [dsl_commands, file_contents]
end

.load(filename, options = nil, &block) ⇒ Object 



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# File 'lib/deface/dsl/loader.rb', line 8

def self.load(filename, options = nil, &block)
  unless File.basename(filename) =~ /^[^\.]+(.html.(erb|haml|slim)){0,1}.deface$/
    raise "Deface::DSL does not know how to read '#{filename}'. Override files should end with just .deface, .html.erb.deface, .html.haml.deface or .html.slim.deface"
  end

  unless file_in_dir_below_overrides?(filename)
    raise "Deface::DSL overrides must be in a sub-directory that matches the views virtual path. Move '#{filename}' into a sub-directory."
  end

  File.open(filename) do |file|
    context_name = File.basename(filename).gsub('.deface', '')

    file_contents = file.read

    if context_name.end_with?('.html.erb')
      dsl_commands, the_rest = extract_dsl_commands_from_erb(file_contents)

      context_name = context_name.gsub('.html.erb', '')
      context = Context.new(context_name)
      context.virtual_path(determine_virtual_path(filename))
      context.instance_eval(dsl_commands)
      context.erb(the_rest)
      context.create_override
    elsif context_name.end_with?('.html.haml')
      dsl_commands, the_rest = extract_dsl_commands_from_haml(file_contents)

      context_name = context_name.gsub('.html.haml', '')
      context = Context.new(context_name)
      context.virtual_path(determine_virtual_path(filename))
      context.instance_eval(dsl_commands)
      context.haml(the_rest)
      context.create_override
    elsif context_name.end_with?('.html.slim')
      dsl_commands, the_rest = extract_dsl_commands_from_slim(file_contents)

      context_name = context_name.gsub('.html.slim', '')
      context = Context.new(context_name)
      context.virtual_path(determine_virtual_path(filename))
      context.instance_eval(dsl_commands)
      context.slim(the_rest)
      context.create_override
    else
      context = Context.new(context_name)
      context.virtual_path(determine_virtual_path(filename))
      context.instance_eval(file_contents)
      context.create_override
    end
  end
end

.register ⇒ Object 



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# File 'lib/deface/dsl/loader.rb', line 58

def self.register
  Polyglot.register('deface', Deface::DSL::Loader)
end