YAML

# File lib/safe_yaml.rb, line 148
def self.load_file_with_options(file, options={})
  safe_mode = safe_mode_from_options("load_file", options)
  if safe_mode == :safe
    safe_load_file(file, options_for_safe_load(options))
  else
    unsafe_load_file(file)
  end
end

# File lib/safe_yaml.rb, line 133
def self.load_with_options(yaml, *original_arguments)
  filename, options = filename_and_options_from_arguments(original_arguments)
  safe_mode = safe_mode_from_options("load", options)
  arguments = [yaml]

  if safe_mode == :safe
    arguments << filename if SafeYAML::YAML_ENGINE == "psych"
    arguments << options_for_safe_load(options)
    safe_load(*arguments)
  else
    arguments << filename if SafeYAML::MULTI_ARGUMENT_YAML_LOAD
    unsafe_load(*arguments)
  end
end

# File lib/safe_yaml.rb, line 162
def self.safe_load(yaml, filename=nil, options={})
  return false if yaml =~ /\A\s*\Z/

  # If the user hasn't whitelisted any tags, we can go with this implementation which is
  # significantly faster.
  if (options && options[:whitelisted_tags] || SafeYAML::OPTIONS[:whitelisted_tags]).empty?
    safe_handler = SafeYAML::PsychHandler.new(options) do |result|
      return result
    end
    arguments_for_parse = [yaml]
    arguments_for_parse << filename if SafeYAML::MULTI_ARGUMENT_YAML_LOAD
    Psych::Parser.new(safe_handler).parse(*arguments_for_parse)

  else
    safe_resolver = SafeYAML::PsychResolver.new(options)
    tree = SafeYAML::MULTI_ARGUMENT_YAML_LOAD ?
      Psych.parse(yaml, filename) :
      Psych.parse(yaml)
    return safe_resolver.resolve_node(tree)
  end
end

# File lib/safe_yaml.rb, line 184
def self.safe_load_file(filename, options={})
  File.open(filename, 'r:bom|utf-8') { |f| self.safe_load(f, filename, options) }
end

# File lib/safe_yaml.rb, line 188
def self.unsafe_load_file(filename)
  if SafeYAML::MULTI_ARGUMENT_YAML_LOAD
    # https://github.com/tenderlove/psych/blob/v1.3.2/lib/psych.rb#L296-298
    File.open(filename, 'r:bom|utf-8') { |f| self.unsafe_load(f, filename) }
  else
    # https://github.com/tenderlove/psych/blob/v1.2.2/lib/psych.rb#L231-233
    self.unsafe_load File.open(filename)
  end
end