11: def handle(ctx, params)
12: raise ArgumentError.new('uri must be specified') unless params[:uri]
13: params[:uri] = params[:uri].dup if params[:uri].is_a?(URI)
14: uri = params[:uri]
15: referer = params[:referer]
16: unless uri.is_a?(URI)
17: uri = uri.to_s.strip.gsub(/[^#{0.chr}-#{126.chr}]/) { |match|
18: if RUBY_VERSION >= "1.9.0"
19: CGI.escape(match)
20: else
21: sprintf('%%%X', match.unpack($KCODE == 'UTF8' ? 'U' : 'c')[0])
22: end
23: }
24:
25: escaped_uri = Util.html_unescape(
26: uri.split(/(?:%[0-9A-Fa-f]{2})+|#/).zip(
27: uri.scan(/(?:%[0-9A-Fa-f]{2})+|#/)
28: ).map { |x,y|
29: "#{URI.escape(x)}#{y}"
30: }.join('')
31: )
32:
33: begin
34: uri = URI.parse(escaped_uri)
35: rescue
36: uri = URI.parse(URI.escape(escaped_uri))
37: end
38:
39: end
40: uri = @scheme_handlers[
41: uri.relative? ? 'relative' : uri.scheme.downcase
42: ].call(uri, params[:referer])
43:
44: if params[:referer] && params[:referer].uri
45: if uri.path.length == 0 && uri.relative?
46: uri.path = params[:referer].uri.path
47: end
48: end
49:
50: uri.path = '/' if uri.path.length == 0
51:
52: if uri.relative?
53: raise 'need absolute URL' unless referer && referer.uri
54: base = nil
55: if referer.respond_to?(:bases) && referer.parser
56: base = referer.bases.last
57: end
58:
59: uri = ((base && base.uri && base.uri.absolute?) ?
60: base.uri :
61: referer.uri) + uri
62: uri = referer.uri + uri
63:
64: uri.path.sub!(/^(\/\.\.)+(?=\/)/, '')
65: end
66:
67: unless ['http', 'https', 'file'].include?(uri.scheme.downcase)
68: raise "unsupported scheme: #{uri.scheme}"
69: end
70: params[:uri] = uri
71:
72: super
73: end