Class: Fontisan::Commands::GlyphsCommand

Inherits:
BaseCommand show all
Defined in:
lib/fontisan/commands/glyphs_command.rb

Overview

Command to list glyph names from a font file

Retrieves glyph names from the post table. Different post table versions provide different levels of glyph name information:

  • Version 1.0: Standard 258 Mac glyph names

  • Version 2.0: Custom glyph names

  • Version 3.0+: No glyph names

Examples:

List glyph names from a font

command = GlyphsCommand.new("font.ttf")
result = command.run
puts result.glyph_count

Instance Method Summary collapse

Methods inherited from BaseCommand

#initialize

Constructor Details

This class inherits a constructor from Fontisan::Commands::BaseCommand

Instance Method Details

#run ⇒ Models::GlyphInfo

Execute the command to retrieve glyph names

Returns:



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# File 'lib/fontisan/commands/glyphs_command.rb', line 21

def run
  glyph_info = Models::GlyphInfo.new

  # Try to get glyph names from post table first
  if font.has_table?(Constants::POST_TAG)
    post_table = font.table(Constants::POST_TAG)
    names = post_table.glyph_names

    if names&.any?
      glyph_info.glyph_names = names
      glyph_info.glyph_count = names.length
      glyph_info.source = "post_#{post_table.version}"
      return glyph_info
    end
  end

  # Future: Try CFF table if no post table or no names
  # if font.has_table?('CFF ')
  #   # Get names from CFF
  # end

  # No glyph name information available
  glyph_info.glyph_names = []
  glyph_info.glyph_count = 0
  glyph_info.source = "none"
  glyph_info
end