module Solargraph::Diagnostics::RubocopHelpers

def fix_drive_letter path
  return path unless path.match(/^[a-z]:/)
  path[0].upcase + path[1..-1]
end

def generate_options filename, code
  args = ['-f', 'j', '--force-exclusion', filename]
  base_options = RuboCop::Options.new
  options, paths = base_options.parse(args)
  options[:stdin] = code
  [options, paths]
end

def redirect_stdout
  redir = StringIO.new
  $stdout = redir
  yield if block_given?
  $stdout = STDOUT
  redir.string
end

def require_rubocop(version = nil)
  begin
    # @type [String]

    gem_path = Gem::Specification.find_by_name('rubocop', version).full_gem_path
    gem_lib_path = File.join(gem_path, 'lib')
    $LOAD_PATH.unshift(gem_lib_path) unless $LOAD_PATH.include?(gem_lib_path)
  # @sg-ignore

  rescue Gem::MissingSpecVersionError => e
    raise InvalidRubocopVersionError,
          "could not find '#{e.name}' (#{e.requirement}) - "\
          "did find: [#{e.specs.map { |s| s.version.version }.join(', ')}]"
  end
  require 'rubocop'
end