Export GTK documentation

export_docs.rb

# 1. Create a file called mygame/app/repl.rb
# 2. Start up the GTK environment.
# 3. Change the line at the bottom of this file.
# 4. Save repl.rb.

# Explanation:
# The code below tells GTK to give me all private member variables that have a public method,
# and for those member variables, execute the public method, then call `.help` on whatever
# that public method returned. Then finally save the help result to a file.

def export_help_for_instance_variable o, ivar
  attr_name = ivar.to_s.gsub("@", "").to_sym
  if o.respond_to? attr_name
    output_file_name =  "app/help-#{attr_name}.txt"
                          .gsub("--", "-")
                          .gsub("class", "")
                          .gsub(":", "")
                          .gsub(" ", "")
                          .gsub("(", "")
                          .gsub(")", "")

    $gtk.ffi_file.storefile output_file_name, o.send(attr_name).help
  end
end

def export_help_for_instance_variables o
  o.instance_variables.sort.map do |ivar|
    export_help_for_instance_variable o, ivar
  end
end

# Change the line below to things like $gtk, $gtk.args, $gtk.args.keyboard, etc
export_help_for_instance_variables $gtk