MagicNumber

MagicNumber is the module to determine a file's type from its magic number.

It is currently heavily under development, The public API should not be considered stable.

Installation

The package can be installed from Hex as:

Add magic_number to your list of dependencies in mix.exs:

def deps do
  [{:magic_number, "~> 0.0.4"}]
end

Ensure magic_number is started before your application:

def application do
  [applications: [:magic_number]]
end

Usage

% iex -S mix
...
iex(1)> content = File.read!("sample.gif")
<<71, 73, 70, 56, 55, 97, 64, 0, 64, 0, 145, 0, 0, 0, 0, 0, 134, 195, 81, 255, 255, 255, 0, 0, 0, 33, 249, 4, 9, 0, 0, 3, 0, 33, 255, 11, 73, 67, 67, 82, 71, 66, 71, 49, 48, 49, 50, 255, 0, 0, ...>>
iex(2)> MagicNumber.detect(content)
{:ok, {:image, :gif}}

Supported file types

• image/jpeg
• image/png
• image/gif
• image/tiff
• application/pdf
• application/zip
• application/gzip

License

MIT