Module: URI

Includes:
RFC2396_REGEXP
Included in:
Generic
Defined in:
lib/uri.rb,
lib/uri/ws.rb,
lib/uri/ftp.rb,
lib/uri/wss.rb,
lib/uri/file.rb,
lib/uri/http.rb,
lib/uri/ldap.rb,
lib/uri/https.rb,
lib/uri/ldaps.rb,
lib/uri/common.rb,
lib/uri/mailto.rb,
lib/uri/generic.rb,
lib/uri/version.rb,
lib/uri/rfc2396_parser.rb,
lib/uri/rfc3986_parser.rb

Overview

uri/common.rb

Author

Akira Yamada <[email protected]>

License

You can redistribute it and/or modify it under the same term as Ruby.

See URI for general documentation

Defined Under Namespace

Modules: RFC2396_REGEXP, Util Classes: BadURIError, Error, FTP, File, Generic, HTTP, HTTPS, InvalidComponentError, InvalidURIError, LDAP, LDAPS, MailTo, RFC2396_Parser, RFC3986_Parser, WS, WSS

Constant Summary collapse

REGEXP =
RFC2396_REGEXP
Parser =
RFC2396_Parser
RFC3986_PARSER =
RFC3986_Parser.new
DEFAULT_PARSER =

URI::Parser.new

Parser.new
TBLENCWWWCOMP_ =

:nodoc:

{}
TBLDECWWWCOMP_ =

:nodoc:

{}
VERSION_CODE =

:stopdoc:

'001100'.freeze
VERSION =
VERSION_CODE.scan(/../).collect{|n| n.to_i}.join('.').freeze

Class Method Summary collapse

Class Method Details

.decode_www_form(str, enc = Encoding::UTF_8, separator: '&', use__charset_: false, isindex: false) ⇒ Object

Decodes URL-encoded form data from given str.

This decodes application/x-www-form-urlencoded data and returns an array of key-value arrays.

This refers url.spec.whatwg.org/#concept-urlencoded-parser, so this supports only &-separator, and doesn't support ;-separator.

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

See URI.decode_www_form_component, URI.encode_www_form.

Raises:

  • (ArgumentError)

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# File 'lib/uri/common.rb', line 408

def self.decode_www_form(str, enc=Encoding::UTF_8, separator: '&', use__charset_: false, isindex: false)
  raise ArgumentError, "the input of #{self.name}.#{__method__} must be ASCII only string" unless str.ascii_only?
  ary = []
  return ary if str.empty?
  enc = Encoding.find(enc)
  str.b.each_line(separator) do |string|
    string.chomp!(separator)
    key, sep, val = string.partition('=')
    if isindex
      if sep.empty?
        val = key
        key = +''
      end
      isindex = false
    end

    if use__charset_ and key == '_charset_' and e = get_encoding(val)
      enc = e
      use__charset_ = false
    end

    key.gsub!(/\+|%\h\h/, TBLDECWWWCOMP_)
    if val
      val.gsub!(/\+|%\h\h/, TBLDECWWWCOMP_)
    else
      val = +''
    end

    ary << [key, val]
  end
  ary.each do |k, v|
    k.force_encoding(enc)
    k.scrub!
    v.force_encoding(enc)
    v.scrub!
  end
  ary
end

.decode_www_form_component(str, enc = Encoding::UTF_8) ⇒ Object

Decodes given str of URL-encoded form data.

This decodes + to SP.

See URI.encode_www_form_component, URI.decode_www_form.

Raises:

  • (ArgumentError)

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# File 'lib/uri/common.rb', line 340

def self.decode_www_form_component(str, enc=Encoding::UTF_8)
  raise ArgumentError, "invalid %-encoding (#{str})" if /%(?!\h\h)/.match?(str)
  str.b.gsub(/\+|%\h\h/, TBLDECWWWCOMP_).force_encoding(enc)
end

.encode_www_form(enum, enc = nil) ⇒ Object

Generates 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 URI.encode_www_form_component(str).

This method doesn't convert the encoding of given items, so convert them before calling 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 refers url.spec.whatwg.org/#concept-urlencoded-serializer

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 URI.encode_www_form_component, URI.decode_www_form.


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# File 'lib/uri/common.rb', line 372

def self.encode_www_form(enum, enc=nil)
  enum.map do |k,v|
    if v.nil?
      encode_www_form_component(k, enc)
    elsif v.respond_to?(:to_ary)
      v.to_ary.map do |w|
        str = encode_www_form_component(k, enc)
        unless w.nil?
          str << '='
          str << encode_www_form_component(w, enc)
        end
      end.join('&')
    else
      str = encode_www_form_component(k, enc)
      str << '='
      str << encode_www_form_component(v, enc)
    end
  end.join('&')
end

.encode_www_form_component(str, enc = nil) ⇒ Object

Encodes 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.

If enc is given, convert str to the encoding before percent encoding.

This is an implementation of www.w3.org/TR/2013/CR-html5-20130806/forms.html#url-encoded-form-data.

See URI.decode_www_form_component, URI.encode_www_form.


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# File 'lib/uri/common.rb', line 322

def self.encode_www_form_component(str, enc=nil)
  str = str.to_s.dup
  if str.encoding != Encoding::ASCII_8BIT
    if enc && enc != Encoding::ASCII_8BIT
      str.encode!(Encoding::UTF_8, invalid: :replace, undef: :replace)
      str.encode!(enc, fallback: ->(x){"&##{x.ord};"})
    end
    str.force_encoding(Encoding::ASCII_8BIT)
  end
  str.gsub!(/[^*\-.0-9A-Z_a-z]/, TBLENCWWWCOMP_)
  str.force_encoding(Encoding::US_ASCII)
end

.extract(str, schemes = nil, &block) ⇒ Object

Synopsis

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

Args

str

String to extract URIs from.

schemes

Limit URI matching to 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:[email protected] and here also.")
# => ["http://foo.example.com/bla", "mailto:[email protected]"]

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# File 'lib/uri/common.rb', line 252

def self.extract(str, schemes = nil, &block)
  warn "URI.extract is obsolete", uplevel: 1 if $VERBOSE
  DEFAULT_PARSER.extract(str, schemes, &block)
end

.for(scheme, *arguments, default: Generic) ⇒ Object

Construct a URI instance, using the scheme to detect the appropriate class from URI.scheme_list.


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# File 'lib/uri/common.rb', line 90

def self.for(scheme, *arguments, default: Generic)
  const_name = scheme.to_s.upcase

  uri_class = INITIAL_SCHEMES[const_name]
  uri_class ||= if /\A[A-Z]\w*\z/.match?(const_name) && Schemes.const_defined?(const_name, false)
    Schemes.const_get(const_name, false)
  end
  uri_class ||= default

  return uri_class.new(scheme, *arguments)
end

.join(*str) ⇒ Object

Synopsis

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

Args

str

String(s) to work with, will be converted to RFC3986 URIs before merging.

Description

Joins URIs.

Usage

require 'uri'

URI.join("http://example.com/","main.rbx")
# => #<URI::HTTP http://example.com/main.rbx>

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

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

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

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

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# File 'lib/uri/common.rb', line 224

def self.join(*str)
  RFC3986_PARSER.join(*str)
end

.parse(uri) ⇒ Object

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/")
# => #<URI::HTTP http://www.ruby-lang.org/>
uri.scheme
# => "http"
uri.host
# => "www.ruby-lang.org"

It's recommended to first ::escape the provided uri_str if there are any invalid URI characters.


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# File 'lib/uri/common.rb', line 187

def self.parse(uri)
  RFC3986_PARSER.parse(uri)
end

.regexp(schemes = nil) ⇒ Object

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 its 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

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# File 'lib/uri/common.rb', line 289

def self.regexp(schemes = nil)
  warn "URI.regexp is obsolete", uplevel: 1 if $VERBOSE
  DEFAULT_PARSER.make_regexp(schemes)
end

.register_scheme(scheme, klass) ⇒ Object


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# File 'lib/uri/common.rb', line 71

def self.register_scheme(scheme, klass)
  Schemes.const_set(scheme, klass)
end

.scheme_listObject

Returns a Hash of the defined schemes.


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# File 'lib/uri/common.rb', line 76

def self.scheme_list
  Schemes.constants.map { |name|
    [name.to_s.upcase, Schemes.const_get(name)]
  }.to_h
end

.split(uri) ⇒ Object

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'

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

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# File 'lib/uri/common.rb', line 150

def self.split(uri)
  RFC3986_PARSER.split(uri)
end