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Mechanize::Chain::URIResolver

Public Class Methods

new(scheme_handlers) click to toggle source
   # File lib/mechanize/chain/uri_resolver.rb, line 6
6:       def initialize(scheme_handlers)
7:         @scheme_handlers = scheme_handlers
8:       end

Public Instance Methods

handle(ctx, params) click to toggle source
    # File lib/mechanize/chain/uri_resolver.rb, line 10
10:       def handle(ctx, params)
11:         raise ArgumentError.new('uri must be specified') unless params[:uri]
12:         params[:uri] = params[:uri].dup if params[:uri].is_a?(URI)
13:         uri     = params[:uri]
14:         referer = params[:referer]
15:         unless uri.is_a?(URI)
16:           uri = uri.to_s.strip.gsub(/[^#{0.chr}-#{126.chr}]/) { |match|
17:             if RUBY_VERSION >= "1.9.0"
18:               CGI.escape(match)
19:             else
20:               sprintf('%%%X', match.unpack($KCODE == 'UTF8' ? 'U' : 'c')[0])
21:             end
22:           }
23: 
24:           escaped_uri = Util.html_unescape(
25:                                            uri.split(/(?:%[0-9A-Fa-f]{2})+|#/).zip(
26:                                                                                    uri.scan(/(?:%[0-9A-Fa-f]{2})+|#/)
27:                                                                                    ).map { |x,y|
28:                                              "#{URI.escape(x)}#{y}"
29:                                            }.join('')
30:                                            )
31: 
32:           begin
33:             uri = URI.parse(escaped_uri)
34:           rescue
35:             uri = URI.parse(URI.escape(escaped_uri))
36:           end
37: 
38:         end
39:         uri = @scheme_handlers[
40:                                uri.relative? ? 'relative' : uri.scheme.downcase
41:                               ].call(uri, params[:referer])
42: 
43:         if params[:referer] && params[:referer].uri
44:           if uri.path.length == 0 && uri.relative?
45:             uri.path = params[:referer].uri.path
46:           end
47:         end
48: 
49:         uri.path = '/' if uri.path.length == 0
50: 
51:         if uri.relative?
52:           raise 'need absolute URL' unless referer && referer.uri
53:           base = nil
54:           if referer.respond_to?(:bases) && referer.parser
55:             base = referer.bases.last
56:           end
57: 
58:           uri = ((base && base.uri && base.uri.absolute?) ?
59:                  base.uri :
60:                  referer.uri) + uri
61:           uri = referer.uri + uri
62:           # Strip initial "/.." bits from the path
63:           uri.path.sub!(/^(\/\.\.)+(?=\/)/, '')
64:         end
65: 
66:         unless ['http', 'https', 'file'].include?(uri.scheme.downcase)
67:           raise "unsupported scheme: #{uri.scheme}"
68:         end
69:         params[:uri] = uri
70: 
71:         super
72:       end

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