Class: Bunto::Converters::Scss

Inherits:
Converter
  • Object
show all
Defined in:
lib/bunto/converters/scss.rb

Direct Known Subclasses

Sass

Constant Summary collapse

BYTE_ORDER_MARK = 
/^\xEF\xBB\xBF/
SyntaxError = 
Class.new(ArgumentError)
ALLOWED_STYLES = 
%w(nested expanded compact compressed).freeze

Instance Method Summary collapse

Instance Method Details

#add_charset? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bunto/converters/scss.rb', line 89

def add_charset?
  !!bunto_sass_configuration["add_charset"]
end

#allow_caching? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bunto/converters/scss.rb', line 85

def allow_caching?
  !safe?
end

#bunto_sass_configuration ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 29

def bunto_sass_configuration
  options = @config["sass"] || {}
  unless options["style"].nil?
    options["style"] = options["style"].to_s.gsub(/\A:/, '').to_sym
  end
  options
end

#convert(content) ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 101

def convert(content)
  output = ::Sass.compile(content, sass_configs)
  replacement = add_charset? ? '@charset "UTF-8";' : ''
  output.sub(BYTE_ORDER_MARK, replacement)
rescue ::Sass::SyntaxError => e
  raise SyntaxError.new("#{e.to_s} on line #{e.sass_line}")
end

#matches(ext) ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 17

def matches(ext)
  ext =~ /^\.scss$/i
end

#output_ext(ext) ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 21

def output_ext(ext)
  ".css"
end

#safe? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bunto/converters/scss.rb', line 25

def safe?
  !!@config["safe"]
end

#sass_build_configuration_options(overrides) ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 37

def sass_build_configuration_options(overrides)
  if safe?
    {
      :load_paths => sass_load_paths,
      :syntax     => syntax,
      :style      => sass_style,
      :cache      => false
    }
  else
    Bunto::Utils.symbolize_hash_keys(
      Bunto::Utils.deep_merge_hashes(
        bunto_sass_configuration,
        overrides
      )
    )
  end
end

#sass_configs ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 93

def sass_configs
  sass_build_configuration_options({
    "syntax"     => syntax,
    "cache"      => allow_caching?,
    "load_paths" => sass_load_paths
  })
end

#sass_dir ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 59

def sass_dir
  return "_sass" if bunto_sass_configuration["sass_dir"].to_s.empty?
  bunto_sass_configuration["sass_dir"]
end

#sass_dir_relative_to_site_source ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 73

def sass_dir_relative_to_site_source
  Bunto.sanitized_path(@config["source"], sass_dir)
end

#sass_load_paths ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 77

def sass_load_paths
  if safe?
    [sass_dir_relative_to_site_source]
  else
    (user_sass_load_paths + [sass_dir_relative_to_site_source]).uniq
  end.select { |load_path| File.directory?(load_path) }
end

#sass_style ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 64

def sass_style
  style = bunto_sass_configuration.fetch("style", :compact)
  ALLOWED_STYLES.include?(style.to_s) ? style.to_sym : :compact
end

#syntax ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 55

def syntax
  :scss
end

#user_sass_load_paths ⇒ Object 



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# File 'lib/bunto/converters/scss.rb', line 69

def user_sass_load_paths
  Array(bunto_sass_configuration["load_paths"])
end