class Rouge::Guessers::GlobMapping

def self.by_pairs(mapping, filename)
  glob_map = {}
  mapping.each do |(glob, lexer_name)|
    lexer = Lexer.find(lexer_name)
    # ignore unknown lexers
    next unless lexer
    glob_map[lexer.name] ||= []
    glob_map[lexer.name] << glob
  end
  new(glob_map, filename)
end

def filter(lexers)
  basename = File.basename(filename)
  collect_best(lexers) do |lexer|
    (@glob_map[lexer.name] || []).map do |pattern|
      if test_glob(pattern, basename)
        # specificity is better the fewer wildcards there are
        -pattern.scan(/[*?\[]/).size
      end
    end.compact.min
  end
end

def initialize(glob_map, filename)
  @glob_map = glob_map
  @filename = filename
end