Add bin and edit workflow

bin/gems/ttfunk-1.8.0/lib/ttfunk/table/name.rb

@@ -0,0 +1,290 @@
+# frozen_string_literal: true
+
+require_relative '../table'
+require 'digest/sha1'
+
+module TTFunk
+  class Table
+    # Naming (`name`) table
+    class Name < Table
+      # Name Record.
+      class NameString < ::String
+        # Platform ID.
+        # @return [Integer]
+        attr_reader :platform_id
+
+        # Platform-specific encoding ID.
+        # @return [Integer]
+        attr_reader :encoding_id
+
+        # Language ID.
+        # @return [Integer]
+        attr_reader :language_id
+
+        # @param text [String]
+        # @param platform_id [Integer]
+        # @param encoding_id [Integer]
+        # @param language_id [Integer]
+        def initialize(text, platform_id, encoding_id, language_id)
+          super(text)
+          @platform_id = platform_id
+          @encoding_id = encoding_id
+          @language_id = language_id
+        end
+
+        # Removes chracter incompatible with PostScript.
+        # @return [String] PostScript-compatible version of this string.
+        def strip_extended
+          stripped = gsub(/[\x00-\x19\x80-\xff]/n, '')
+          stripped = '[not-postscript]' if stripped.empty?
+          stripped
+        end
+      end
+
+      # Name records.
+      # @return [Array<Hash>]
+      attr_reader :entries
+
+      # Name strings.
+      # @return [Hash{Integer => NameString}]
+      attr_reader :strings
+
+      # Copyright notice.
+      # @return [Array<NameString>]
+      attr_reader :copyright
+
+      # Font Family names.
+      # @return [Array<NameString>]
+      attr_reader :font_family
+
+      # Font Subfamily names.
+      # @return [Array<NameString>]
+      attr_reader :font_subfamily
+
+      # Unique font identifiers.
+      # @return [Array<NameString>]
+      attr_reader :unique_subfamily
+
+      # Full font names.
+      # @return [Array<NameString>]
+      attr_reader :font_name
+
+      # Version strings.
+      # @return [Array<NameString>]
+      attr_reader :version
+
+      # Trademarks.
+      # @return [Array<NameString>]
+      attr_reader :trademark
+
+      # Manufacturer Names.
+      # @return [Array<NameString>]
+      attr_reader :manufacturer
+
+      # Designers.
+      # @return [Array<NameString>]
+      attr_reader :designer
+
+      # Descriptions.
+      # @return [Array<NameString>]
+      attr_reader :description
+
+      # Vendor URLs.
+      # @return [Array<NameString>]
+      attr_reader :vendor_url
+
+      # Designer URLs.
+      # @return [Array<NameString>]
+      attr_reader :designer_url
+
+      # License Descriptions.
+      # @return [Array<NameString>]
+      attr_reader :license
+
+      # License Info URLs.
+      # @return [Array<NameString>]
+      attr_reader :license_url
+
+      # Typographic Family names.
+      # @return [Array<NameString>]
+      attr_reader :preferred_family
+
+      # Typographic Subfamily names.
+      # @return [Array<NameString>]
+      attr_reader :preferred_subfamily
+
+      # Compatible Full Names.
+      # @return [Array<NameString>]
+      attr_reader :compatible_full
+
+      # Sample texts.
+      # @return [Array<NameString>]
+      attr_reader :sample_text
+
+      # Copyright notice ID.
+      COPYRIGHT_NAME_ID = 0
+
+      # Font Family name ID.
+      FONT_FAMILY_NAME_ID = 1
+
+      # Font Subfamily name ID.
+      FONT_SUBFAMILY_NAME_ID = 2
+
+      # Unique font identifier ID.
+      UNIQUE_SUBFAMILY_NAME_ID = 3
+
+      # Full font name that reflects all family and relevant subfamily
+      # descriptors ID.
+      FONT_NAME_NAME_ID = 4
+
+      # Version string ID.
+      VERSION_NAME_ID = 5
+
+      # PostScript name for the font ID.
+      POSTSCRIPT_NAME_NAME_ID = 6
+
+      # Trademark ID.
+      TRADEMARK_NAME_ID = 7
+
+      # Manufacturer Name ID.
+      MANUFACTURER_NAME_ID = 8
+
+      # Designer ID.
+      DESIGNER_NAME_ID = 9
+
+      # Description ID.
+      DESCRIPTION_NAME_ID = 10
+
+      # Vendor URL ID.
+      VENDOR_URL_NAME_ID = 11
+
+      # Designer URL ID.
+      DESIGNER_URL_NAME_ID = 12
+
+      # License Description ID.
+      LICENSE_NAME_ID = 13
+
+      # License Info URL ID.
+      LICENSE_URL_NAME_ID = 14
+
+      # Typographic Family name ID.
+      PREFERRED_FAMILY_NAME_ID = 16
+
+      # Typographic Subfamily name ID.
+      PREFERRED_SUBFAMILY_NAME_ID = 17
+
+      # Compatible Full ID.
+      COMPATIBLE_FULL_NAME_ID = 18
+
+      # Sample text ID.
+      SAMPLE_TEXT_NAME_ID = 19
+
+      # Encode table.
+      #
+      # @param names [TTFunk::Table::Name]
+      # @param key [String]
+      # @return [String]
+      def self.encode(names, key = '')
+        tag = Digest::SHA1.hexdigest(key)[0, 6]
+
+        postscript_name = NameString.new("#{tag}+#{names.postscript_name}", 1, 0, 0)
+
+        strings = names.strings.dup
+        strings[6] = [postscript_name]
+        str_count = strings.reduce(0) { |sum, (_, list)| sum + list.length }
+
+        table = [0, str_count, 6 + (12 * str_count)].pack('n*')
+        strtable = +''
+
+        items = []
+        strings.each do |id, list|
+          list.each do |string|
+            items << [id, string]
+          end
+        end
+        items =
+          items.sort_by { |id, string|
+            [string.platform_id, string.encoding_id, string.language_id, id]
+          }
+        items.each do |id, string|
+          table << [
+            string.platform_id, string.encoding_id, string.language_id, id,
+            string.length, strtable.length,
+          ].pack('n*')
+          strtable << string
+        end
+
+        table << strtable
+      end
+
+      # PostScript name for the font.
+      # @return [String]
+      def postscript_name
+        return @postscript_name if @postscript_name
+
+        font_family.first || 'unnamed'
+      end
+
+      private
+
+      def parse!
+        count, string_offset = read(6, 'x2n*')
+
+        @entries = []
+        count.times do
+          platform, encoding, language, id, length, start_offset =
+            read(12, 'n*')
+          @entries << {
+            platform_id: platform,
+            encoding_id: encoding,
+            language_id: language,
+            name_id: id,
+            length: length,
+            offset: offset + string_offset + start_offset,
+            text: nil,
+          }
+        end
+
+        @strings = Hash.new { |h, k| h[k] = [] }
+
+        count.times do |i|
+          io.pos = @entries[i][:offset]
+          @entries[i][:text] = io.read(@entries[i][:length])
+          @strings[@entries[i][:name_id]] << NameString.new(
+            @entries[i][:text] || '',
+            @entries[i][:platform_id],
+            @entries[i][:encoding_id],
+            @entries[i][:language_id],
+          )
+        end
+
+        # should only be ONE postscript name
+
+        @copyright = @strings[COPYRIGHT_NAME_ID]
+        @font_family = @strings[FONT_FAMILY_NAME_ID]
+        @font_subfamily = @strings[FONT_SUBFAMILY_NAME_ID]
+        @unique_subfamily = @strings[UNIQUE_SUBFAMILY_NAME_ID]
+        @font_name = @strings[FONT_NAME_NAME_ID]
+        @version = @strings[VERSION_NAME_ID]
+
+        unless @strings[POSTSCRIPT_NAME_NAME_ID].empty?
+          @postscript_name = @strings[POSTSCRIPT_NAME_NAME_ID]
+            .first.strip_extended
+        end
+
+        @trademark = @strings[TRADEMARK_NAME_ID]
+        @manufacturer = @strings[MANUFACTURER_NAME_ID]
+        @designer = @strings[DESIGNER_NAME_ID]
+        @description = @strings[DESCRIPTION_NAME_ID]
+        @vendor_url = @strings[VENDOR_URL_NAME_ID]
+        @designer_url = @strings[DESIGNER_URL_NAME_ID]
+        @license = @strings[LICENSE_NAME_ID]
+        @license_url = @strings[LICENSE_URL_NAME_ID]
+        @preferred_family = @strings[PREFERRED_FAMILY_NAME_ID]
+        @preferred_subfamily = @strings[PREFERRED_SUBFAMILY_NAME_ID]
+        @compatible_full = @strings[COMPATIBLE_FULL_NAME_ID]
+        @sample_text = @strings[SAMPLE_TEXT_NAME_ID]
+      end
+    end
+  end
+end