module Rack
  module Mime
    # Returns String with mime type if found, otherwise use +fallback+.
    # +ext+ should be filename extension in the '.ext' format that
    #       File.extname(file) returns.
    # +fallback+ may be any object
    #
    # Also see the documentation for MIME_TYPES
    #
    # Usage:
    #     Rack::Mime.mime_type('.foo')
    #
    # This is a shortcut for:
    #     Rack::Mime::MIME_TYPES.fetch('.foo', 'application/octet-stream')

    def mime_type(ext, fallback='application/octet-stream')
      MIME_TYPES.fetch(ext.to_s.downcase, fallback)
    end
    module_function :mime_type

    # List of most common mime-types, selected various sources
    # according to their usefulness in a webserving scope for Ruby
    # users.
    #
    # To amend this list with your local mime.types list you can use:
    #
    #     require 'webrick/httputils'
    #     list = WEBrick::HTTPUtils.load_mime_types('/etc/mime.types')
    #     Rack::Mime::MIME_TYPES.merge!(list)
    #
    # To add the list mongrel provides, use:
    #
    #     require 'mongrel/handlers'
    #     Rack::Mime::MIME_TYPES.merge!(Mongrel::DirHandler::MIME_TYPES)

    MIME_TYPES = {
      ".3gp"     => "video/3gpp",
      ".a"       => "application/octet-stream",
      ".ai"      => "application/postscript",
      ".aif"     => "audio/x-aiff",
      ".aiff"    => "audio/x-aiff",
      ".asc"     => "application/pgp-signature",
      ".asf"     => "video/x-ms-asf",
      ".asm"     => "text/x-asm",
      ".asx"     => "video/x-ms-asf",
      ".atom"    => "application/atom+xml",
      ".au"      => "audio/basic",
      ".avi"     => "video/x-msvideo",
      ".bat"     => "application/x-msdownload",
      ".bin"     => "application/octet-stream",
      ".bmp"     => "image/bmp",
      ".bz2"     => "application/x-bzip2",
      ".c"       => "text/x-c",
      ".cab"     => "application/vnd.ms-cab-compressed",
      ".cc"      => "text/x-c",
      ".chm"     => "application/vnd.ms-htmlhelp",
      ".class"   => "application/octet-stream",
      ".com"     => "application/x-msdownload",
      ".conf"    => "text/plain",
      ".cpp"     => "text/x-c",
      ".crt"     => "application/x-x509-ca-cert",
      ".css"     => "text/css",
      ".csv"     => "text/csv",
      ".cxx"     => "text/x-c",
      ".deb"     => "application/x-debian-package",
      ".der"     => "application/x-x509-ca-cert",
      ".diff"    => "text/x-diff",
      ".djv"     => "image/vnd.djvu",
      ".djvu"    => "image/vnd.djvu",
      ".dll"     => "application/x-msdownload",
      ".dmg"     => "application/octet-stream",
      ".doc"     => "application/msword",
      ".dot"     => "application/msword",
      ".dtd"     => "application/xml-dtd",
      ".dvi"     => "application/x-dvi",
      ".ear"     => "application/java-archive",
      ".eml"     => "message/rfc822",
      ".eps"     => "application/postscript",
      ".exe"     => "application/x-msdownload",
      ".f"       => "text/x-fortran",
      ".f77"     => "text/x-fortran",
      ".f90"     => "text/x-fortran",
      ".flv"     => "video/x-flv",
      ".for"     => "text/x-fortran",
      ".gem"     => "application/octet-stream",
      ".gemspec" => "text/x-script.ruby",
      ".gif"     => "image/gif",
      ".gz"      => "application/x-gzip",
      ".h"       => "text/x-c",
      ".htc"     => "text/x-component",
      ".hh"      => "text/x-c",
      ".htm"     => "text/html",
      ".html"    => "text/html",
      ".ico"     => "image/vnd.microsoft.icon",
      ".ics"     => "text/calendar",
      ".ifb"     => "text/calendar",
      ".iso"     => "application/octet-stream",
      ".jar"     => "application/java-archive",
      ".java"    => "text/x-java-source",
      ".jnlp"    => "application/x-java-jnlp-file",
      ".jpeg"    => "image/jpeg",
      ".jpg"     => "image/jpeg",
      ".js"      => "application/javascript",
      ".json"    => "application/json",
      ".log"     => "text/plain",
      ".m3u"     => "audio/x-mpegurl",
      ".m4v"     => "video/mp4",
      ".man"     => "text/troff",
      ".manifest"=> "text/cache-manifest",
      ".mathml"  => "application/mathml+xml",
      ".mbox"    => "application/mbox",
      ".mdoc"    => "text/troff",
      ".me"      => "text/troff",
      ".mid"     => "audio/midi",
      ".midi"    => "audio/midi",
      ".mime"    => "message/rfc822",
      ".mml"     => "application/mathml+xml",
      ".mng"     => "video/x-mng",
      ".mov"     => "video/quicktime",
      ".mp3"     => "audio/mpeg",
      ".mp4"     => "video/mp4",
      ".mp4v"    => "video/mp4",
      ".mpeg"    => "video/mpeg",
      ".mpg"     => "video/mpeg",
      ".ms"      => "text/troff",
      ".msi"     => "application/x-msdownload",
      ".odp"     => "application/vnd.oasis.opendocument.presentation",
      ".ods"     => "application/vnd.oasis.opendocument.spreadsheet",
      ".odt"     => "application/vnd.oasis.opendocument.text",
      ".ogg"     => "application/ogg",
      ".ogv"     => "video/ogg",
      ".p"       => "text/x-pascal",
      ".pas"     => "text/x-pascal",
      ".pbm"     => "image/x-portable-bitmap",
      ".pdf"     => "application/pdf",
      ".pem"     => "application/x-x509-ca-cert",
      ".pgm"     => "image/x-portable-graymap",
      ".pgp"     => "application/pgp-encrypted",
      ".pkg"     => "application/octet-stream",
      ".pl"      => "text/x-script.perl",
      ".pm"      => "text/x-script.perl-module",
      ".png"     => "image/png",
      ".pnm"     => "image/x-portable-anymap",
      ".ppm"     => "image/x-portable-pixmap",
      ".pps"     => "application/vnd.ms-powerpoint",
      ".ppt"     => "application/vnd.ms-powerpoint",
      ".ps"      => "application/postscript",
      ".psd"     => "image/vnd.adobe.photoshop",
      ".py"      => "text/x-script.python",
      ".qt"      => "video/quicktime",
      ".ra"      => "audio/x-pn-realaudio",
      ".rake"    => "text/x-script.ruby",
      ".ram"     => "audio/x-pn-realaudio",
      ".rar"     => "application/x-rar-compressed",
      ".rb"      => "text/x-script.ruby",
      ".rdf"     => "application/rdf+xml",
      ".roff"    => "text/troff",
      ".rpm"     => "application/x-redhat-package-manager",
      ".rss"     => "application/rss+xml",
      ".rtf"     => "application/rtf",
      ".ru"      => "text/x-script.ruby",
      ".s"       => "text/x-asm",
      ".sgm"     => "text/sgml",
      ".sgml"    => "text/sgml",
      ".sh"      => "application/x-sh",
      ".sig"     => "application/pgp-signature",
      ".snd"     => "audio/basic",
      ".so"      => "application/octet-stream",
      ".svg"     => "image/svg+xml",
      ".svgz"    => "image/svg+xml",
      ".swf"     => "application/x-shockwave-flash",
      ".t"       => "text/troff",
      ".tar"     => "application/x-tar",
      ".tbz"     => "application/x-bzip-compressed-tar",
      ".tcl"     => "application/x-tcl",
      ".tex"     => "application/x-tex",
      ".texi"    => "application/x-texinfo",
      ".texinfo" => "application/x-texinfo",
      ".text"    => "text/plain",
      ".tif"     => "image/tiff",
      ".tiff"    => "image/tiff",
      ".torrent" => "application/x-bittorrent",
      ".tr"      => "text/troff",
      ".txt"     => "text/plain",
      ".vcf"     => "text/x-vcard",
      ".vcs"     => "text/x-vcalendar",
      ".vrml"    => "model/vrml",
      ".war"     => "application/java-archive",
      ".wav"     => "audio/x-wav",
      ".webm"    => "video/webm",
      ".wma"     => "audio/x-ms-wma",
      ".wmv"     => "video/x-ms-wmv",
      ".wmx"     => "video/x-ms-wmx",
      ".wrl"     => "model/vrml",
      ".wsdl"    => "application/wsdl+xml",
      ".xbm"     => "image/x-xbitmap",
      ".xhtml"   => "application/xhtml+xml",
      ".xls"     => "application/vnd.ms-excel",
      ".xml"     => "application/xml",
      ".xpm"     => "image/x-xpixmap",
      ".xsl"     => "application/xml",
      ".xslt"    => "application/xslt+xml",
      ".yaml"    => "text/yaml",
      ".yml"     => "text/yaml",
      ".zip"     => "application/zip",
    }
  end
end
