Module: InlineImage

Defined in:
lib/inline_image.rb,
lib/inline_image/version.rb

Constant Summary collapse

MAX_FILE_SIZE =

Maximum file size to be inlined in bytes

1024
VERSION = 
"1.0.1"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.process(base_dir, name_in_file, max_file_size = MAX_FILE_SIZE) ⇒ Object 



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# File 'lib/inline_image.rb', line 40

def self.process(base_dir, name_in_file, max_file_size = MAX_FILE_SIZE)
  image_filename = "#{base_dir}/#{name_in_file}"
  extension = name_in_file.split('.').last
  if File.exist?(image_filename) and File.size(image_filename) <= max_file_size then
    File.open(image_filename) do |img|
      base64encoded = Base64.encode64(img.read).gsub("\n", "")
      "data:image/#{extension};base64,#{base64encoded}"
    end if File.exist? image_filename
  else
    name_in_file
  end
end

.replace_in_css(css_text, base_dir = '.', max_file_size = MAX_FILE_SIZE) ⇒ Object 



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# File 'lib/inline_image.rb', line 28

def self.replace_in_css(css_text, base_dir = '.', max_file_size = MAX_FILE_SIZE)
  css_text.gsub(/url\(['"]?([^'"\)]+)['"]?\)/m) do |match| 
    "url(#{process(base_dir, $1, max_file_size)})"
  end
end

.replace_in_html(html_text, base_dir = '.', max_file_size = MAX_FILE_SIZE) ⇒ Object 



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# File 'lib/inline_image.rb', line 34

def self.replace_in_html(html_text, base_dir = '.', max_file_size = MAX_FILE_SIZE)
  html_text.gsub(/src=['"]([^'"\)]+)['"]/m) do |match| 
    "src=\"#{process(base_dir, $1, max_file_size)}\""
  end
end

Instance Method Details

#in_css(filename, max_file_size = MAX_FILE_SIZE, options = {}) ⇒ Object 



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# File 'lib/inline_image.rb', line 9

def in_css(filename, max_file_size = MAX_FILE_SIZE, options = {})
  return false unless File.exist? filename

  # TODO : Option to disable the copy
  FileUtils.cp filename, "#{filename}.bak"

  dir = File.dirname(filename)
  extension = filename.split('.').last

  File.open(filename, File::RDWR) do |file|
    css = replace_in_css file.read, dir

    file.rewind
    file.truncate(0)
    file.write css
  end

end