Method: URI.encode_www_form_component

Defined in:
lib/tire/rubyext/uri_escape.rb

.encode_www_form_component(s) ⇒ Object

Encode given +s+ to URL-encoded form data.

This method doesn't convert *, -, ., 0-9, A-Z, _, a-z, but does convert SP (ASCII space) to + and converts others to %XX.

This is an implementation of http://www.w3.org/TR/html5/forms.html#url-encoded-form-data

See URI.decode_www_form_component, URI.encode_www_form



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/tire/rubyext/uri_escape.rb', line 26

def self.encode_www_form_component(s)
  str = s.to_s
  if RUBY_VERSION < "1.9" && $KCODE =~ /u/i
    str.gsub(/([^ a-zA-Z0-9_.-]+)/) do
      '%' + $1.unpack('H2' * Rack::Utils.bytesize($1)).join('%').upcase
    end.tr(' ', '+')
  else
    if TBLENCWWWCOMP_.empty?
      tbl = {}
      256.times do |i|
        tbl[i.chr] = '%%%02X' % i
      end
      tbl[' '] = '+'
      begin
        TBLENCWWWCOMP_.replace(tbl)
        TBLENCWWWCOMP_.freeze
      rescue
      end
    end
    str.gsub(/[^*\-.0-9A-Z_a-z]/) {|m| TBLENCWWWCOMP_[m]}
  end
end