FileTypes.jl

Small and dependency free Julia package to infer file and MIME type checking the magic numbers#Magic_numbers_in_files>) signature.

Features

• Supports a wide range of file types
• Provides file extension and proper MIME type
• File discovery by extension or MIME type
• File discovery by class (image, video, audio…)
• Provides a bunch of helpers and file matching shortcuts
• Simple and semantic API

General Info

currently under developement.

Take a look on contribution

Examples

Simple file type checking

  using FileTypes
  julia> kind = matcher("example.gif")
  FileType.Types("gif", "image/gif")
  julia> kind.extension
  "gif"
  julia> kind.mime
  "image/gif"

Check type class

  using FileTypes
  julia> Is(FileType.Image,"example.gif")
  true

additional checker function

  using FileTypes
  julia> is_mime_supported("image/jpeg")
  true
  julia> is_extension_supported("png")
  true

You can see the supported file type using

  julia> using FileTypes
  julia> FileType
  FileTypes.FileType
  julia> FileType.Image
  Dict{FileTypes.FileType.Type, Function} with 12 entries:
    Type("gif", MIME type image/gif)                 => Gif
    Type("cr2", MIME type image/x-canon-cr2)         => CR2
    Type("jp2", MIME type image/jp2)                 => Jpeg2000
    Type("psd", MIME type image/vnd.adobe.photoshop) => Psd
    Type("bmp", MIME type image/bmp)                 => Bmp
    Type("tif", MIME type image/tiff)                => Tiff
    Type("jpg", MIME type image/jpeg)                => Jpeg
    Type("ico", MIME type image/vnd.microsoft.icon)  => Ico
    Type("png", MIME type image/png)                 => Png
    Type("webp", MIME type image/webp)               => Webp
    Type("jxr", MIME type image/vnd.ms-photo)        => Jxr
    Type("dwg", MIME type image/vnd.dwg)             => Dwg

Supported types

Image

• jpg - image/jpeg
• png - image/png
• gif - image/gif
• webp - image/webp
• cr2 - image/x-canon-cr2
• tif - image/tiff
• bmp - image/bmp
• heif - image/heif
• jxr - image/vnd.ms-photo
• psd - image/vnd.adobe.photoshop
• ico - image/vnd.microsoft.icon
• dwg - image/vnd.dwg

Video

• m4v - video/x-m4v
• webm - video/webm
• mov - video/quicktime
• avi - video/x-msvideo
• wmv - video/x-ms-wmv
• mpg - video/mpeg
• flv - video/x-flv
• 3gp - video/3gpp

Audio

• mid - audio/midi
• mp3 - audio/mpeg
• m4a - audio/m4a
• ogg - audio/ogg
• flac - audio/x-flac
• wav - audio/x-wav
• amr - audio/amr
• aac - audio/aac

Archive

• epub - application/epub+zip
• zip - application/zip
• tar - application/x-tar
• rar - application/vnd.rar
• gz - application/gzip
• bz2 - application/x-bzip2
• 7z - application/x-7z-compressed
• xz - application/x-xz
• pdf - application/pdf
• exe - application/vnd.microsoft.portable-executable
• swf - application/x-shockwave-flash
• rtf - application/rtf
• iso - application/x-iso9660-image
• eot - application/octet-stream
• ps - application/postscript
• sqlite - application/vnd.sqlite3
• nes - application/x-nintendo-nes-rom
• crx - application/x-google-chrome-extension
• cab - application/vnd.ms-cab-compressed
• deb - application/vnd.debian.binary-package
• ar - application/x-unix-archive
• Z - application/x-compress
• lz - application/x-lzip
• rpm - application/x-rpm
• elf - application/x-executable
• dcm - application/dicom

Documents

• doc - application/msword
• xls - application/vnd.ms-excel
• ppt - application/vnd.ms-powerpoint

Font

• woff - application/font-woff
• woff2 - application/font-woff
• ttf - application/font-sfnt
• otf - application/font-sfnt

Application

• wasm - application/wasm
• dex - application/vnd.android.dex
• dey - application/vnd.android.dey

Contribution

• Currently, the Is API takes a parameter as FileType.Images.Image which is a dictionary of all the supported image. I think it should be an (immutable)namedtuple as the custom filetype should be of unknown type only.
• There should be an API to add new custom Types.
• Currently, Filetypes(publicly accessed) is a tuple that should be an Array as this library has to provide an API to add a new type, and that new type could we handled in Is API like FileType.Unknown.
• The FileType.Images.Image should be FileType.Images

Benchmark

system info:
SMP Debian 5.8.7-1kali1 (2020-09-14) x86_64 GNU/Linux
Intel(R) Core(TM) i3-6006U CPU @ 2.00GHz

julia> @benchmark matcher("example.png")
BenchmarkTools.Trial: 
  memory estimate:  1.69 KiB
  allocs estimate:  16
  --------------
  minimum time:     12.304 μs (0.00% GC)
  median time:      12.859 μs (0.00% GC)
  mean time:        14.708 μs (0.00% GC)
  maximum time:     329.586 μs (0.00% GC)
  --------------
  samples:          10000
  evals/sample:     1

License

MIT - Prince Roshan