Matches offers and "acceptables".
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Gemfile
README.md
Rakefile
offer-accept-matcher.gemspec

README.md

Offer and accept matcher.

Author: Philipp Kempgen, http://kempgen.net

Usage

require 'offer_accept_matcher'

offers = [
    { :main => 'en-UK' , 'q' => 1.0 },
    { :main => 'de-DE' , 'q' => 0.8 },
]

accept_str = "de-DE;q=1.0, de;q=0.9, en-US;q=0.6, en-UK;q=0.6, en;q=0.5, *;q=0.1"

winning_offer = OfferAcceptMatcher.winning_offer(
    weighted_offers =
    OfferAcceptMatcher.compare( accept_str, offers,
        & OfferAcceptMatcher.iso_lang_tag_comparator
    ))

puts "Weighted offers:"
weighted_offers.each { |offer|
    puts offer.inspect
}
#=> [0.9508, {:main=>"de-DE", "q"=>0.8}]
#=> [0.6010, {:main=>"en-UK", "q"=>1.0}]

puts "Winning offer:"
puts winning_offer[:main].inspect
#=> "de-DE"