Rack::Directory

# File lib/rack/directory.rb, line 45
def initialize(root, app=nil)
  @root = F.expand_path(root)
  @app = app || Rack::File.new(@root)
end

# File lib/rack/directory.rb, line 56
def _call(env)
  @env = env
  @script_name = env[SCRIPT_NAME]
  @path_info = Utils.unescape(env[PATH_INFO])

  if forbidden = check_forbidden
    forbidden
  else
    @path = F.join(@root, @path_info)
    list_path
  end
end

# File lib/rack/directory.rb, line 50
def call(env)
  dup._call(env)
end

# File lib/rack/directory.rb, line 69
def check_forbidden
  return unless @path_info.include? ".."

  body = "Forbidden\n"
  size = Rack::Utils.bytesize(body)
  return [403, {"Content-Type" => "text/plain",
    CONTENT_LENGTH => size.to_s,
    "X-Cascade" => "pass"}, [body]]
end

# File lib/rack/directory.rb, line 137
def each
  show_path = Rack::Utils.escape_html(@path.sub(/^#{@root}/,''))
  files = @files.map{|f| DIR_FILE % DIR_FILE_escape(*f) }*"\n"
  page  = DIR_PAGE % [ show_path, show_path , files ]
  page.each_line{|l| yield l }
end

# File lib/rack/directory.rb, line 129
def entity_not_found
  body = "Entity not found: #{@path_info}\n"
  size = Rack::Utils.bytesize(body)
  return [404, {"Content-Type" => "text/plain",
    CONTENT_LENGTH => size.to_s,
    "X-Cascade" => "pass"}, [body]]
end

# File lib/rack/directory.rb, line 153
def filesize_format(int)
  FILESIZE_FORMAT.each do |format, size|
    return format % (int.to_f / size) if int >= size
  end

  int.to_s + 'B'
end

# File lib/rack/directory.rb, line 79
def list_directory
  @files = [['../','Parent Directory','','','']]
  glob = F.join(@path, '*')

  url_head = (@script_name.split('/') + @path_info.split('/')).map do |part|
    Rack::Utils.escape part
  end

  Dir[glob].sort.each do |node|
    stat = stat(node)
    next  unless stat
    basename = F.basename(node)
    ext = F.extname(node)

    url = F.join(*url_head + [Rack::Utils.escape(basename)])
    size = stat.size
    type = stat.directory? ? 'directory' : Mime.mime_type(ext)
    size = stat.directory? ? '-' : filesize_format(size)
    mtime = stat.mtime.httpdate
    url << '/'  if stat.directory?
    basename << '/'  if stat.directory?

    @files << [ url, basename, size, type, mtime ]
  end

  return [ 200, { CONTENT_TYPE =>'text/html; charset=utf-8'}, self ]
end

# File lib/rack/directory.rb, line 115
def list_path
  @stat = F.stat(@path)

  if @stat.readable?
    return @app.call(@env) if @stat.file?
    return list_directory if @stat.directory?
  else
    raise Errno::ENOENT, 'No such file or directory'
  end

rescue Errno::ENOENT, Errno::ELOOP
  return entity_not_found
end

# File lib/rack/directory.rb, line 107
def stat(node, max = 10)
  F.stat(node)
rescue Errno::ENOENT, Errno::ELOOP
  return nil
end