module ChunkyPNG::Canvas::DataUrlImporting

def from_data_url(string)

Returns:
  • (String) - The canvas formatted as a data URL string. 
def from_data_url(string)
  if string =~ %r[^data:image/png;base64,((?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=))$]
    from_blob($1.unpack('m').first)
  else
    raise SignatureMismatch, "The string was not a properly formatted data URL for a PNG image."
  end
end