module TTFunk::Table::Cmap::Format00
Attributes
code_map[R]
language[R]
Public Class Methods
encode(charmap)
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Expects a hash mapping character codes to glyph ids (where the glyph ids are from the original font). Returns a hash including a new map (:charmap) that maps the characters in charmap to a another hash containing both the old (:old) and new (:new) glyph ids. The returned hash also includes a :subtable key, which contains the encoded subtable for the given charmap.
# File lib/ttfunk/table/cmap/format00.rb, line 17 def self.encode(charmap) next_id = 0 glyph_indexes = Array.new(256, 0) glyph_map = { 0 => 0 } new_map = charmap.keys.sort.each_with_object({}) do |code, map| glyph_map[charmap[code]] ||= next_id += 1 map[code] = { old: charmap[code], new: glyph_map[charmap[code]] } glyph_indexes[code] = glyph_map[charmap[code]] map end # format, length, language, indices subtable = [0, 262, 0, *glyph_indexes].pack('nnnC*') { charmap: new_map, subtable: subtable, max_glyph_id: next_id + 1 } end
Public Instance Methods
[](code)
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# File lib/ttfunk/table/cmap/format00.rb, line 35 def [](code) @code_map[code] || 0 end
supported?()
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# File lib/ttfunk/table/cmap/format00.rb, line 39 def supported? true end
Private Instance Methods
parse_cmap!()
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# File lib/ttfunk/table/cmap/format00.rb, line 45 def parse_cmap! @language = read(4, 'x2n') @code_map = read(256, 'C*') end