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- lib/rack/mime.rb

### Methods

- ::match?
- ::mime_type

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# Rack::Mime

### Constants

MIME_TYPES

  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)

  N.B. On Ubuntu the mime.types file does not include the leading period, so users may need to modify the data before merging into the hash.

  To add the list mongrel provides, use:

      require 'mongrel/handlers'
      Rack::Mime::MIME_TYPES.merge!(Mongrel::DirHandler::MIME_TYPES)

### Public Class Methods

match?(value, matcher) click to toggle source

Returns true if the given value is a mime match for the given mime match specification, false otherwise.

    Rack::Mime.match?('text/html', 'text/*') => true
    Rack::Mime.match?('text/plain', '*') => true
    Rack::Mime.match?('text/html', 'application/json') => false

    # File lib/rack/mime.rb, line 28
    def match?(value, matcher)
      v1, v2 = value.split('/', 2)
      m1, m2 = matcher.split('/', 2)

      (m1 == '*' || v1 == m1) && (m2.nil? || m2 == '*' || m2 == v2)
    end

mime_type(ext, fallback='application/octet-stream') click to toggle source

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')

    # File lib/rack/mime.rb, line 16
    def mime_type(ext, fallback='application/octet-stream')
      MIME_TYPES.fetch(ext.to_s.downcase, fallback)
    end

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