module URI

Decode URL-encoded form data from given str.

This decodes application/x-www-form-urlencoded data and returns array of key-value array. This internally uses ::decode_www_form_component.

charset hack is not supported now because the mapping from given charset to Ruby's encoding is not clear yet. see also www.w3.org/TR/html5/syntax.html#character-encodings-0

This refers www.w3.org/TR/html5/forms.html#url-encoded-form-data

ary = ::decode_www_form(“a=1&a=2&b=3”) p ary #=> [['a', '1'], ['a', '2'], ['b', '3']] p ary.assoc('a').last #=> '1' p ary.assoc('b').last #=> '3' p ary.rassoc('a').last #=> '2' p Hash # => {“a”=>“2”, “b”=>“3”}

See ::decode_www_form_component, ::encode_www_form

# File lib/uri/common.rb, line 974
def self.decode_www_form(str, enc=Encoding::UTF_8)
  return [] if str.empty?
  unless /\A#{WFKV_}=#{WFKV_}(?:[;&]#{WFKV_}=#{WFKV_})*\z/o =~ str
    raise ArgumentError, "invalid data of application/x-www-form-urlencoded (#{str})"
  end
  ary = []
  $&.scan(/([^=;&]+)=([^;&]*)/) do
    ary << [decode_www_form_component($1, enc), decode_www_form_component($2, enc)]
  end
  ary
end

Decode given str of URL-encoded form data.

This decodes + to SP.

See ::encode_www_form_component, ::decode_www_form

# File lib/uri/common.rb, line 897
def self.decode_www_form_component(str, enc=Encoding::UTF_8)
  raise ArgumentError, "invalid %-encoding (#{str})" unless /\A[^%]*(?:%\h\h[^%]*)*\z/ =~ str
  str.dup.force_encoding("ASCII-8BIT")         .gsub(/\+|%\h\h/, TBLDECWWWCOMP_)         .force_encoding(enc)
end

Generate URL-encoded form data from given enum.

This generates application/x-www-form-urlencoded data defined in HTML5 from given an Enumerable object.

This internally uses ::encode_www_form_component.

This method doesn't convert the encoding of given items, so convert them before call this method if you want to send data as other than original encoding or mixed encoding data. (Strings which are encoded in an HTML5 ASCII incompatible encoding are converted to UTF-8.)

This method doesn't handle files. When you send a file, use multipart/form-data.

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

URI.encode_www_form([["q", "ruby"], ["lang", "en"]])
#=> "q=ruby&lang=en"
URI.encode_www_form("q" => "ruby", "lang" => "en")
#=> "q=ruby&lang=en"
URI.encode_www_form("q" => ["ruby", "perl"], "lang" => "en")
#=> "q=ruby&q=perl&lang=en"
URI.encode_www_form([["q", "ruby"], ["q", "perl"], ["lang", "en"]])
#=> "q=ruby&q=perl&lang=en"

See ::encode_www_form_component, ::decode_www_form

# File lib/uri/common.rb, line 932
def self.encode_www_form(enum)
  enum.map do |k,v|
    if v.nil?
      encode_www_form_component(k)
    elsif v.respond_to?(:to_ary)
      v.to_ary.map do |w|
        str = encode_www_form_component(k)
        unless w.nil?
          str << '='
          str << encode_www_form_component(w)
        end
      end.join('&')
    else
      str = encode_www_form_component(k)
      str << '='
      str << encode_www_form_component(v)
    end
  end.join('&')
end

Encode given str 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 www.w3.org/TR/html5/association-of-controls-and-forms.html#url-encoded-form-data

See ::decode_www_form_component, ::encode_www_form

# File lib/uri/common.rb, line 880
def self.encode_www_form_component(str)
  str = str.to_s
  if HTML5ASCIIINCOMPAT.include?(str.encoding)
    str = str.encode(Encoding::UTF_8)
  else
    str = str.dup
  end
  str.force_encoding(Encoding::ASCII_8BIT)
  str.gsub!(/[^*\-.0-9A-Z_a-z]/, TBLENCWWWCOMP_)
  str.force_encoding(Encoding::US_ASCII)
end

Synopsis¶ ↑

URI::extract(str[, schemes][,&blk])

Args¶ ↑

str

String to extract URIs from.

schemes

Limit URI matching to a specific schemes.

Description¶ ↑

Extracts URIs from a string. If block given, iterates through all matched URIs. Returns nil if block given or array with matches.

Usage¶ ↑

require "uri"

URI.extract("text here http://foo.example.org/bla and here mailto:test@example.com and here also.")
# => ["http://foo.example.com/bla", "mailto:test@example.com"]

# File lib/uri/common.rb, line 812
def self.extract(str, schemes = nil, &block)
  DEFAULT_PARSER.extract(str, schemes, &block)
end

Synopsis¶ ↑

URI::join(str[, str, ...])

Args¶ ↑

str

String(s) to work with

Description¶ ↑

Joins URIs.

Usage¶ ↑

require 'uri'

p URI.join("http://example.com/","main.rbx")
# => #<URI::HTTP:0x2022ac02 URL:http://localhost/main.rbx>

p URI.join('http://example.com', 'foo')
# => #<URI::HTTP:0x01ab80a0 URL:http://example.com/foo>

p URI.join('http://example.com', '/foo', '/bar')
# => #<URI::HTTP:0x01aaf0b0 URL:http://example.com/bar>

p URI.join('http://example.com', '/foo', 'bar')
# => #<URI::HTTP:0x801a92af0 URL:http://example.com/bar>

p URI.join('http://example.com', '/foo/', 'bar')
# => #<URI::HTTP:0x80135a3a0 URL:http://example.com/foo/bar>

# File lib/uri/common.rb, line 784
def self.join(*str)
  DEFAULT_PARSER.join(*str)
end

Synopsis¶ ↑

URI::parse(uri_str)

Args¶ ↑

uri_str

String with URI.

Description¶ ↑

Creates one of the URI's subclasses instance from the string.

Raises¶ ↑

URI::InvalidURIError

Raised if URI given is not a correct one.

Usage¶ ↑

require 'uri'

uri = URI.parse("http://www.ruby-lang.org/")
p uri
# => #<URI::HTTP:0x202281be URL:http://www.ruby-lang.org/>
p uri.scheme
# => "http"
p uri.host
# => "www.ruby-lang.org"

# File lib/uri/common.rb, line 746
def self.parse(uri)
  DEFAULT_PARSER.parse(uri)
end

Synopsis¶ ↑

URI::regexp([match_schemes])

Args¶ ↑

match_schemes

Array of schemes. If given, resulting regexp matches to URIs whose scheme is one of the match_schemes.

Description¶ ↑

Returns a Regexp object which matches to URI-like strings. The Regexp object returned by this method includes arbitrary number of capture group (parentheses). Never rely on it's number.

Usage¶ ↑

require 'uri'

# extract first URI from html_string
html_string.slice(URI.regexp)

# remove ftp URIs
html_string.sub(URI.regexp(['ftp'])

# You should not rely on the number of parentheses
html_string.scan(URI.regexp) do |*matches|
  p $&
end

# File lib/uri/common.rb, line 847
def self.regexp(schemes = nil)
  DEFAULT_PARSER.make_regexp(schemes)
end

Returns a Hash of the defined schemes

# File lib/uri/common.rb, line 659
def self.scheme_list
  @@schemes
end

Synopsis¶ ↑

URI::split(uri)

Args¶ ↑

uri

String with URI.

Description¶ ↑

Splits the string on following parts and returns array with result:

* Scheme
* Userinfo
* Host
* Port
* Registry
* Path
* Opaque
* Query
* Fragment

Usage¶ ↑

require 'uri'

p URI.split("http://www.ruby-lang.org/")
# => ["http", nil, "www.ruby-lang.org", nil, nil, "/", nil, nil, nil]

# File lib/uri/common.rb, line 711
def self.split(uri)
  DEFAULT_PARSER.split(uri)
end