README

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|       libmagic bindings by dsturnbull
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SYNOPSIS
     $ gem install content_type
     irb> require 'content_type'
     irb> File.content_type('file.pdf')             #=> "application/pdf"
     irb> File.open('file.doc').content_type        #=> "application/msword"
     irb> "hi".content_type                         #=> "text/plain"
     irb> ContentType.new('file.jpg').content_type  #=> "image/jpeg"

DESCRIPTION
     ContentType is a simple C extension that binds to libmagic in order to
     efficiently detect mime types of files.

     Using the should_be_faster rspec extension,
       ext.should be_at_least(5).times.faster_than(shell)

     In addition to being fast, it is far more accurate than the current
     practice of casing a regexp on file extensions.

DIAGNOSTICS
     ContentType raises "ArgumentError: invalid file" for all errors relating to
     the file it's working on.

     ContentType raises "RuntimeError: open", "RuntimeError: load" and
     "RuntimeError: file" for libmagic errors.

     Any file that cannot be identified is simply said to be "data".

AVAILABILITY
     http://github.com/dsturnbull/content_type