class TTFunk::ResourceFile
Attributes
map[R]
Public Class Methods
new(io)
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# File lib/ttfunk/resource_file.rb, line 12 def initialize(io) @io = io data_offset, map_offset, map_length = @io.read(16).unpack('NNx4N') @map = {} # skip header copy, next map handle, file reference, and attrs @io.pos = map_offset + 24 type_list_offset, name_list_offset = @io.read(4).unpack('n*') type_list_offset += map_offset name_list_offset += map_offset @io.pos = type_list_offset max_index = @io.read(2).unpack('n').first 0.upto(max_index) do type, max_type_index, ref_list_offset = @io.read(8).unpack('A4nn') @map[type] = { list: [], named: {} } parse_from(type_list_offset + ref_list_offset) do 0.upto(max_type_index) do id, name_ofs, attr = @io.read(5).unpack('nnC') data_ofs = @io.read(3) data_ofs = data_offset + [0, data_ofs].pack('CA*').unpack('N').first handle = @io.read(4).unpack('N').first entry = { id: id, attributes: attr, offset: data_ofs, handle: handle } if name_list_offset + name_ofs < map_offset + map_length parse_from(name_ofs + name_list_offset) do len = @io.read(1).unpack('C').first entry[:name] = @io.read(len) end end @map[type][:list] << entry @map[type][:named][entry[:name]] = entry if entry[:name] end end end end
open(path) { |file| ... }
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# File lib/ttfunk/resource_file.rb, line 5 def self.open(path) ::File.open(path, 'rb') do |io| file = new(io) yield file end end
Public Instance Methods
[](type, index = 0)
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# File lib/ttfunk/resource_file.rb, line 59 def [](type, index = 0) if @map[type] collection = index.is_a?(Integer) ? :list : :named if @map[type][collection][index] parse_from(@map[type][collection][index][:offset]) do length = @io.read(4).unpack('N').first return @io.read(length) end end end end
resources_for(type)
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# File lib/ttfunk/resource_file.rb, line 71 def resources_for(type) (@map[type] && @map[type][:named] || {}).keys end
Private Instance Methods
parse_from(offset) { || ... }
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# File lib/ttfunk/resource_file.rb, line 77 def parse_from(offset) saved = @io.pos @io.pos = offset yield ensure @io.pos = saved end