exts / Gisc

Generic Image Signature Checker written in Crystal

Gisc

Gisc, short for Generic Image Signature Checker, is a generic image signature checker to validate if an image is of the type that is being loaded. Allows for making sure an image is a valid gif, jpeg or png.

Currently theonly supported image types are:

• jpg
• png
• gif

Installation

Add this to your application's shard.yml:

dependencies:
  Gisc:
    github: exts/Gisc

Usage

require "Gisc"

imginfo = Gisc::Checker.new "path/to/image.png"
if imginfo.check "png"
  puts "this is a valid png"
  puts imginfo.signature
  #puts imginfo.image.get() #read Gisc/Image.cr for more info
end

Contributing

1. Fork it ( https://github.com/exts/Gisc/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• exts exts - creator, maintainer