Add bin and edit workflow

bin/gems/ttfunk-1.8.0/lib/ttfunk/otf_encoder.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+module TTFunk
+  # Encodes a CFF-based OpenType font subset to its binary representation.
+  class OTFEncoder < TTFEncoder
+    # Optimal table order according to OpenType specification.
+    OPTIMAL_TABLE_ORDER = ['head', 'hhea', 'maxp', 'OS/2', 'name', 'cmap', 'post', 'CFF '].freeze
+
+    private
+
+    # CFF fonts don't maintain a glyf table, all glyph information is stored
+    # in the charstrings index. Return an empty hash here to indicate a glyf
+    # table should not be encoded.
+    def glyf_table
+      @glyf_table ||= {}
+    end
+
+    # Since CFF fonts don't maintain a glyf table, they also don't maintain
+    # a loca table. Return an empty hash here to indicate a loca table
+    # shouldn't be encoded.
+    def loca_table
+      @loca_table ||= {}
+    end
+
+    def base_table
+      @base_table ||= TTFunk::Table::Simple.new(original, 'BASE').raw
+    end
+
+    def cff_table
+      @cff_table ||= original.cff.encode(subset)
+    end
+
+    def vorg_table
+      @vorg_table ||= TTFunk::Table::Vorg.encode(original.vertical_origins)
+    end
+
+    def tables
+      @tables ||= super.merge(
+        'BASE' => base_table,
+        'VORG' => vorg_table,
+        'CFF ' => cff_table,
+      ).compact
+    end
+
+    def optimal_table_order
+      # DSIG is always last
+      OPTIMAL_TABLE_ORDER +
+        (tables.keys - ['DSIG'] - OPTIMAL_TABLE_ORDER) +
+        ['DSIG']
+    end
+  end
+end