Class: Rack::MediaType

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/media_type.rb

Overview

Rack::MediaType parse media type and parameters out of content_type string

Constant Summary collapse

SPLIT_PATTERN = 
/[;,]/

Class Method Summary collapse

Class Method Details

.params(content_type) ⇒ Object

The media type parameters provided in CONTENT_TYPE as a Hash, or an empty Hash if no CONTENT_TYPE or media-type parameters were provided. e.g., when the CONTENT_TYPE is “text/plain;charset=utf-8”, this method responds with the following Hash:

{ 'charset' => 'utf-8' }

This will pass back parameters with empty strings in the hash if they lack a value (e.g., “text/plain;charset=” will return { ‘charset’ => ” }, and “text/plain;charset” will return { ‘charset’ => ” }, similarly to the query params parser (barring the latter case, which returns nil instead)).

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# File 'lib/rack/media_type.rb', line 34 def params(content_type) return {} if content_type.nil? || content_type.empty? content_type.split(SPLIT_PATTERN)[1..-1].each_with_object({}) do |s, hsh| s.strip! k, v = s.split('=', 2) k.downcase! hsh[k] = strip_doublequotes(v) end end

.type(content_type) ⇒ Object

The media type (type/subtype) portion of the CONTENT_TYPE header without any media type parameters. e.g., when CONTENT_TYPE is “text/plain;charset=utf-8”, the media-type is “text/plain”.

For more information on the use of media types in HTTP, see: www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7

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# File 'lib/rack/media_type.rb', line 16 def type(content_type) return nil unless content_type && !content_type.empty? type = content_type.split(SPLIT_PATTERN, 2).first type.rstrip! type.downcase! type end