class Rack::Accept::Language
Represents an HTTP Accept-Language header according to the HTTP 1.1 specification, and provides several convenience methods for determining acceptable content languages.
Attributes
first_level_match[W]
Public Instance Methods
matches(language)
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Returns an array of languages from this header that match the given
language
, ordered by precedence.
# File lib/rack/accept/language.rb, line 26 def matches(language) values.select {|v| v = v.match(/^(.+?)-/) ? $1 : v if @first_level_match v == language || v == '*' || (language.match(/^(.+?)-/) && v == $1) }.sort {|a, b| # "*" gets least precedence, any others are compared based on length. a == '*' ? -1 : (b == '*' ? 1 : a.length <=> b.length) }.reverse end
name()
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The name of this header.
# File lib/rack/accept/language.rb, line 12 def name 'Accept-Language' end
qvalue(language)
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Determines the quality factor (qvalue) of the given language
.
# File lib/rack/accept/language.rb, line 17 def qvalue(language) return 1 if @qvalues.empty? m = matches(language) return 0 if m.empty? normalize_qvalue(@qvalues[m.first]) end