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module Adsf::Rack
class IndexFileFinder
def initialize(app, options)
@app = app
@root = options[:root] or raise ArgumentError, ':root option is required but was not given'
@index_filenames = options[:index_filenames] || [ 'index.html' ]
end
def call(env)
# Get path
path_info = ::Rack::Utils.unescape(env['PATH_INFO'])
path = ::File.join(@root, path_info)
# Redirect if necessary
if ::File.directory?(path) && path_info !~ /\/$/
new_path_info = env['PATH_INFO'] + '/'
return [
302,
{ 'Location' => new_path_info, 'Content-Type' => 'text/html' },
[ "Redirecting you to #{new_path_info}…" ]
]
end
# Add index file if necessary
new_env = env.dup
if ::File.directory?(path)
if index_filename = index_file_in(path)
new_env['PATH_INFO'] = ::File.join(path_info, index_filename)
end
end
# Pass on
@app.call(new_env)
end
private
def index_file_in(dir)
@index_filenames.find do |index_filename|
::File.file?(::File.join(dir, index_filename))
end
end
end
end
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