module HexaPDF::Font::TrueType::Table::CmapSubtable::Format0
Cmap
format 0
Public Class Methods
parse(io, length) → code_map
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Parses the format 0 cmap subtable from the given IO at the current position and returns the contained code map.
It is assumed that the first six bytes of the subtable have already been consumed.
# File lib/hexapdf/font/true_type/table/cmap_subtable.rb, line 176 def self.parse(io, length) raise HexaPDF::Error, "Invalid length #{length} for cmap format 0" if length != 262 code_map = io.read(256).unpack('C*') gid_map = {} code_map.each_with_index {|glyph, index| gid_map[glyph] = index } [code_map, gid_map] end