def handle(ctx, params)
raise ArgumentError.new('uri must be specified') unless params[:uri]
params[:uri] = params[:uri].dup if params[:uri].is_a?(URI)
uri = params[:uri]
referer = params[:referer]
unless uri.is_a?(URI)
uri = uri.to_s.strip.gsub(/[^#{0.chr}-#{126.chr}]/) { |match|
sprintf('%%%X', match.unpack($KCODE == 'UTF8' ? 'U' : 'c')[0])
}
escaped_uri = Util.html_unescape(
uri.split(/(?:%[0-9A-Fa-f]{2})+|#/).zip(
uri.scan(/(?:%[0-9A-Fa-f]{2})+|#/)
).map { |x,y|
"#{URI.escape(x)}#{y}"
}.join('')
)
begin
uri = URI.parse(escaped_uri)
rescue
uri = URI.parse(URI.escape(escaped_uri))
end
end
uri = @scheme_handlers[
uri.relative? ? 'relative' : uri.scheme.downcase
].call(uri, params[:referer])
if params[:referer] && params[:referer].uri
if uri.path.length == 0 && uri.relative?
uri.path = params[:referer].uri.path
end
end
uri.path = '/' if uri.path.length == 0
if uri.relative?
raise 'need absolute URL' unless referer && referer.uri
base = nil
if referer.respond_to?(:bases) && referer.parser
base = referer.bases.last
end
uri = ((base && base.uri && base.uri.absolute?) ?
base.uri :
referer.uri) + uri
uri = referer.uri + uri
uri.path.sub!(/^(\/\.\.)+(?=\/)/, '')
end
unless ['http', 'https', 'file'].include?(uri.scheme.downcase)
raise "unsupported scheme: #{uri.scheme}"
end
params[:uri] = uri
super
end