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require 'set'
require 'ttfunk/subset/base'
module TTFunk
module Subset
class Unicode < Base
def initialize(original)
super
@subset = Set.new
end
def unicode?
true
end
def to_unicode_map
@subset.inject({}) { |map, code| map[code] = code; map }
end
def use(character)
@subset << character
end
def covers?(character)
true
end
def includes?(character)
@subset.includes(character)
end
def from_unicode(character)
character
end
protected
def new_cmap_table(options)
mapping = @subset.inject({}) { |map, code| map[code] = unicode_cmap[code]; map }
TTFunk::Table::Cmap.encode(mapping, :unicode)
end
def original_glyph_ids
([0] + @subset.map { |code| unicode_cmap[code] }).uniq.sort
end
end
end
end
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