Module: HttpHeaders::Utils::List

Defined in:
lib/http_headers/utils/list.rb

Overview

Examples:

Accept values


class Accept < DelegateClass(Array)
  def initialize(value)
    super HttpHeaders::List.new(value, entry_klazz: Accept::Entry)
  end

  class Entry
    def initialize(media_type, index: parameters:)
      ...
    end

    def q
      parameters.fetch(:q) { 1.0 }.to_f
    end

    def <=>(other)
      quality = other.q <=> q
      return quality unless quality.zero?
      index <=> other.index
    end
  end
end

Accept.new(['*/*; q=0.1', 'application/json, text/html; q=0.8'])
# => List['application/json', 'text/html', '*/*']

Constant Summary collapse

HEADER_DELIMITER = 
','
PARAMETER_DELIMITER = 
';'

Class Method Summary collapse

Class Method Details

.new(combined, entry_klazz:) ⇒ Object 



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# File 'lib/http_headers/utils/list.rb', line 46

def new(combined, entry_klazz:)
  result = parse(combined, entry_klazz: entry_klazz)
  entry_klazz.instance_methods(false).include?(:<=>) ? result.sort! : result
end

.parse(combined, entry_klazz:) ⇒ Object 



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# File 'lib/http_headers/utils/list.rb', line 38

def parse(combined, entry_klazz:)
  Array(combined).map { |line| line.split(HEADER_DELIMITER) }.flatten.each_with_index.map do |entry, index|
    value, *parameters = entry.strip.split(PARAMETER_DELIMITER)
    indexed_parameters = Hash[Array(parameters).map { |p| p.strip.split('=') }].transform_keys!(&:to_sym)
    entry_klazz.new(value, index: index, parameters: indexed_parameters)
  end
end

.stringify_entry(entry) ⇒ Object 



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# File 'lib/http_headers/utils/list.rb', line 57

def stringify_entry(entry)
  return entry.to_header if entry.respond_to?(:to_header)
  return entry.to_s if entry.respond_to?(:to_s)
  entry.inspect
end

.to_header(list) ⇒ Object 



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# File 'lib/http_headers/utils/list.rb', line 51

def to_header(list)
  # noinspection RubyBlockToMethodReference
  list.map { |entry| stringify_entry(entry) }
      .join("#{HEADER_DELIMITER} ")
end