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module Compass::SassExtensions::Functions::InlineImage
def inline_image(path, mime_type = nil)
path = path.value
real_path = File.join(Compass.configuration.images_path, path)
inline_image_string(data(real_path), compute_mime_type(path, mime_type))
end
def inline_font_files(*args)
raise Sass::SyntaxError, "An even number of arguments must be passed to font_files()" unless args.size % 2 == 0
files = []
while args.size > 0
path = args.shift.value
real_path = File.join(Compass.configuration.fonts_path, path)
url = inline_image_string(data(real_path), compute_mime_type(path))
files << "#{url} format('#{args.shift}')"
end
Sass::Script::String.new(files.join(", "))
end
protected
def inline_image_string(data, mime_type)
data = [data].flatten.pack('m').gsub("\n","")
url = "url('data:#{mime_type};base64,#{data}')"
Sass::Script::String.new(url)
end
private
def compute_mime_type(path, mime_type = nil)
return mime_type if mime_type
case path
when /\.png$/i
'image/png'
when /\.jpe?g$/i
'image/jpeg'
when /\.gif$/i
'image/gif'
when /\.svg$/i
'image/svg+xml'
when /\.otf$/i
'font/opentype'
when /\.eot$/i
'application/vnd.ms-fontobject'
when /\.ttf$/i
'font/truetype'
when /\.woff$/i
'application/x-font-woff'
when /\.off$/i
'font/openfont'
when /\.([a-zA-Z]+)$/
"image/#{Regexp.last_match(1).downcase}"
else
raise Compass::Error, "A mime type could not be determined for #{path}, please specify one explicitly."
end
end
def data(real_path)
if File.readable?(real_path)
File.open(real_path, "rb") {|io| io.read}
else
raise Compass::Error, "File not found or cannot be read: #{real_path}"
end
end
end
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