Class EmojiTable < Object

# File tool/enc-emoji4unicode.rb, line 12
def initialize(xml_path)
  @doc = REXML::Document.new File.open(xml_path)
  @kddi_undoc = make_kddi_undoc_map()
end

# File tool/enc-emoji4unicode.rb, line 17
def conversion(from_carrier, to_carrier, &block)
  REXML::XPath.each(@doc.root, '//e') do |e|
    from = e.attribute(from_carrier.downcase).to_s
    to = e.attribute(to_carrier.downcase).to_s
    text_fallback = e.attribute('text_fallback').to_s
    name = e.attribute('name').to_s
    if from =~ /^(?:\*|\+)(.+)$/ # proposed or unified
      from = $1
    end
    if from.empty? || from !~ /^[0-9A-F]+$/
      # do nothing
    else
      from_utf8 = [from.hex].pack("U").unpack("H*").first
      if to =~ /^(?:>|\*)?([0-9A-F\+]+)$/
        str_to = $1
        if str_to =~ /^\+/ # unicode "proposed" begins at "+"
          proposal = true
          str_to.sub!(/^\+/, '')
        else
          proposal = false
        end
        tos = str_to.split('+')
        to_utf8 = tos.map(&:hex).pack("U*").unpack("H*").first
        comment = "[%s] U+%X -> %s" % [name, from.hex, tos.map{|c| "U+%X"%c.hex}.join(' ')]
        block.call(:from => from_utf8,
                   :to => to_utf8,
                   :comment => comment,
                   :fallback => false,
                   :proposal => proposal)
      elsif to.empty?
        if text_fallback.empty?
          comment = "[%s] U+%X -> U+3013 (GETA)" % [name, from.hex]
          block.call(:from => from_utf8,
                     :to => "\u{3013}".unpack("H*").first,
                     :comment => comment, # geta
                     :fallback => true,
                     :proposal => false)
        else
          to_utf8 = text_fallback.unpack("H*").first
          comment = %Q([%s] U+%X -> "%s") % [name, from.hex, text_fallback]
          block.call(:from => from_utf8,
                     :to => to_utf8,
                     :comment => comment,
                     :fallback => true,
                     :proposal => false)
        end
      else
        raise "something wrong: %s -> %s" % [from, to]
      end
    end
  end
end

# File tool/enc-emoji4unicode.rb, line 70
def generate(io, from_carrier, to_carrier)
  from_encoding = (from_carrier == "Unicode") ? "UTF-8" : "UTF8-"+from_carrier
  to_encoding   = (to_carrier == "Unicode" )  ? "UTF-8" : "UTF8-"+to_carrier
    io.puts "EMOJI_EXCHANGE_TBL['#{from_encoding}']['#{to_encoding}'] = ["
    io.puts "  # for documented codepoints" if from_carrier == "KDDI"
    self.conversion(from_carrier, to_carrier) do |params|
      from, to = params[:from], %Q{"#{params[:to]}"}
      to = ":undef" if params[:fallback] || params[:proposal]
      io.puts %Q{  ["#{from}", #{to}], # #{params[:comment]}}
    end
    if from_carrier == "KDDI"
      io.puts "  # for undocumented codepoints"
      self.conversion(from_carrier, to_carrier) do |params|
        from, to = params[:from], %Q{"#{params[:to]}"}
        to = ":undef" if params[:fallback] || params[:proposal]
        unicode = utf8_to_ucs(from)
        undoc = ucs_to_utf8(@kddi_undoc[unicode])
        io.puts %Q{  ["#{undoc}", #{to}], # #{params[:comment]}}
      end
    end
    io.puts "]"
    io.puts
end