90 lines
2.9 KiB
Ruby
90 lines
2.9 KiB
Ruby
# frozen_string_literal: true
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module TTFunk
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class Table
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# Compact Font Format (`CFF `) table
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class Cff < TTFunk::Table
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autoload :Charset, 'ttfunk/table/cff/charset'
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autoload :Charsets, 'ttfunk/table/cff/charsets'
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autoload :Charstring, 'ttfunk/table/cff/charstring'
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autoload :CharstringsIndex, 'ttfunk/table/cff/charstrings_index'
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autoload :Dict, 'ttfunk/table/cff/dict'
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autoload :Encoding, 'ttfunk/table/cff/encoding'
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autoload :Encodings, 'ttfunk/table/cff/encodings'
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autoload :FdSelector, 'ttfunk/table/cff/fd_selector'
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autoload :FontDict, 'ttfunk/table/cff/font_dict'
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autoload :FontIndex, 'ttfunk/table/cff/font_index'
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autoload :Header, 'ttfunk/table/cff/header'
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autoload :Index, 'ttfunk/table/cff/index'
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autoload :OneBasedIndex, 'ttfunk/table/cff/one_based_index'
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autoload :Path, 'ttfunk/table/cff/path'
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autoload :PrivateDict, 'ttfunk/table/cff/private_dict'
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autoload :SubrIndex, 'ttfunk/table/cff/subr_index'
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autoload :TopDict, 'ttfunk/table/cff/top_dict'
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autoload :TopIndex, 'ttfunk/table/cff/top_index'
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# Table tag. The extra space is important.
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TAG = 'CFF '
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# Table header.
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# @return [TTFunk::Table::Cff::Header]
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attr_reader :header
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# Name index.
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# @return [TTFunk::Table::Cff::Index]
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attr_reader :name_index
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# Top dict index.
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# @return [TTFunk::Table::Cff::TopIndex]
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attr_reader :top_index
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# Strings index.
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# @return [TTFunk::Table::Cff::OneBasedIndex]
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attr_reader :string_index
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# Global subroutine index.
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# @return [TTFunk::Table::Cff::SubrIndex]
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attr_reader :global_subr_index
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# Table tag.
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# @return [String]
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def tag
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TAG
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end
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# Encode table.
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#
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# @param subset [TTFunk::Subset::MacRoman, TTFunk::Subset::Windows1252,
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# TTFunk::Subset::Unicode, TTFunk::Subset::Unicode8Bit]
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# @return [TTFunk::EncodedString]
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def encode(subset)
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# Make sure TopDict has an entry for encoding so it could be properly replaced
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top_index[0][TopDict::OPERATORS[:encoding]] = 0
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EncodedString.new do |result|
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result.concat(
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header.encode,
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name_index.encode,
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top_index.encode,
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string_index.encode,
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global_subr_index.encode,
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)
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charmap = subset.new_cmap_table[:charmap]
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top_index[0].finalize(result, charmap)
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end
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end
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private
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def parse!
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@header = Header.new(file, offset)
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@name_index = Index.new(file, @header.table_offset + @header.length)
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@top_index = TopIndex.new(file, @name_index.table_offset + @name_index.length)
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@string_index = OneBasedIndex.new(file, @top_index.table_offset + @top_index.length)
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@global_subr_index = SubrIndex.new(file, @string_index.table_offset + @string_index.length)
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end
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end
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end
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end
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