Module: ActivityStreams::Matchers

Includes:
Addressable
Included in:
ActivityStreams
Defined in:
lib/streams/activitystreams.rb

Overview

Provides a number of generally useful utilities methods

Class Method Summary collapse

Class Method Details

.checker(&block) ⇒ Object

utility method providing the basic structure of validation checkers for the various fields…



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# File 'lib/streams/activitystreams.rb', line 98

def checker &block
  ->(v) do
    raise ArgumentError unless block.call v
    v
  end
end

.is_absolute_iri?(m) ⇒ Boolean

true if m is parseable as an IRI and is absolute

Returns:

  • (Boolean) 


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# File 'lib/streams/activitystreams.rb', line 77

def is_absolute_iri? m
  URI.parse(m).absolute? rescue false
end

.is_lang_tag?(m) ⇒ Boolean

true if m is a valid RFC 4646 Lang tag

Returns:

  • (Boolean) 


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# File 'lib/streams/activitystreams.rb', line 92

def is_lang_tag? m
  I18n::Locale::Tag::Rfc4646.tag m rescue false
end

.is_mime_type?(m) ⇒ Boolean

true if m is a valid MIME Media Type

Returns:

  • (Boolean) 


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# File 'lib/streams/activitystreams.rb', line 87

def is_mime_type? m
  MIME::Type.new m rescue false
end

.is_token?(m) ⇒ Boolean

true if m validates as a isegment-nz-nc as defined by RFC 3987. The activity streams spec requires that verbs and object types MUST either be isegment-nz-nc or absolute IRI productions.

Returns:

  • (Boolean) 


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# File 'lib/streams/activitystreams.rb', line 70

def is_token? m
  return false if m == nil
  m = m.to_s
  (m =~ /^([a-zA-Z0-9\-\.\_\~]|\%[0-9a-fA-F]{2}|[\!\$\&\'\(\)\*\+\,\;\=\@])+$/) != nil
end

.is_verb?(m) ⇒ Boolean

true if m is a valid verb

Returns:

  • (Boolean) 


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# File 'lib/streams/activitystreams.rb', line 82

def is_verb? m
  is_token?(m) || is_absolute_iri?(m)
end