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-rw-r--r--lib/rubygems/vendor/uri/lib/uri/common.rb853
1 files changed, 853 insertions, 0 deletions
diff --git a/lib/rubygems/vendor/uri/lib/uri/common.rb b/lib/rubygems/vendor/uri/lib/uri/common.rb
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index 0000000000..921fb9dd28
--- /dev/null
+++ b/lib/rubygems/vendor/uri/lib/uri/common.rb
@@ -0,0 +1,853 @@
+# frozen_string_literal: true
+#--
+# = uri/common.rb
+#
+# Author:: Akira Yamada <akira@ruby-lang.org>
+# License::
+# You can redistribute it and/or modify it under the same term as Ruby.
+#
+# See Gem::URI for general documentation
+#
+
+require_relative "rfc2396_parser"
+require_relative "rfc3986_parser"
+
+module Gem::URI
+ include RFC2396_REGEXP
+
+ REGEXP = RFC2396_REGEXP
+ Parser = RFC2396_Parser
+ RFC3986_PARSER = RFC3986_Parser.new
+ Ractor.make_shareable(RFC3986_PARSER) if defined?(Ractor)
+
+ # Gem::URI::Parser.new
+ DEFAULT_PARSER = Parser.new
+ DEFAULT_PARSER.pattern.each_pair do |sym, str|
+ unless REGEXP::PATTERN.const_defined?(sym)
+ REGEXP::PATTERN.const_set(sym, str)
+ end
+ end
+ DEFAULT_PARSER.regexp.each_pair do |sym, str|
+ const_set(sym, str)
+ end
+ Ractor.make_shareable(DEFAULT_PARSER) if defined?(Ractor)
+
+ module Util # :nodoc:
+ def make_components_hash(klass, array_hash)
+ tmp = {}
+ if array_hash.kind_of?(Array) &&
+ array_hash.size == klass.component.size - 1
+ klass.component[1..-1].each_index do |i|
+ begin
+ tmp[klass.component[i + 1]] = array_hash[i].clone
+ rescue TypeError
+ tmp[klass.component[i + 1]] = array_hash[i]
+ end
+ end
+
+ elsif array_hash.kind_of?(Hash)
+ array_hash.each do |key, value|
+ begin
+ tmp[key] = value.clone
+ rescue TypeError
+ tmp[key] = value
+ end
+ end
+ else
+ raise ArgumentError,
+ "expected Array of or Hash of components of #{klass} (#{klass.component[1..-1].join(', ')})"
+ end
+ tmp[:scheme] = klass.to_s.sub(/\A.*::/, '').downcase
+
+ return tmp
+ end
+ module_function :make_components_hash
+ end
+
+ module Schemes
+ end
+ private_constant :Schemes
+
+ # Registers the given +klass+ as the class to be instantiated
+ # when parsing a \Gem::URI with the given +scheme+:
+ #
+ # Gem::URI.register_scheme('MS_SEARCH', Gem::URI::Generic) # => Gem::URI::Generic
+ # Gem::URI.scheme_list['MS_SEARCH'] # => Gem::URI::Generic
+ #
+ # Note that after calling String#upcase on +scheme+, it must be a valid
+ # constant name.
+ def self.register_scheme(scheme, klass)
+ Schemes.const_set(scheme.to_s.upcase, klass)
+ end
+
+ # Returns a hash of the defined schemes:
+ #
+ # Gem::URI.scheme_list
+ # # =>
+ # {"MAILTO"=>Gem::URI::MailTo,
+ # "LDAPS"=>Gem::URI::LDAPS,
+ # "WS"=>Gem::URI::WS,
+ # "HTTP"=>Gem::URI::HTTP,
+ # "HTTPS"=>Gem::URI::HTTPS,
+ # "LDAP"=>Gem::URI::LDAP,
+ # "FILE"=>Gem::URI::File,
+ # "FTP"=>Gem::URI::FTP}
+ #
+ # Related: Gem::URI.register_scheme.
+ def self.scheme_list
+ Schemes.constants.map { |name|
+ [name.to_s.upcase, Schemes.const_get(name)]
+ }.to_h
+ end
+
+ INITIAL_SCHEMES = scheme_list
+ private_constant :INITIAL_SCHEMES
+ Ractor.make_shareable(INITIAL_SCHEMES) if defined?(Ractor)
+
+ # Returns a new object constructed from the given +scheme+, +arguments+,
+ # and +default+:
+ #
+ # - The new object is an instance of <tt>Gem::URI.scheme_list[scheme.upcase]</tt>.
+ # - The object is initialized by calling the class initializer
+ # using +scheme+ and +arguments+.
+ # See Gem::URI::Generic.new.
+ #
+ # Examples:
+ #
+ # values = ['john.doe', 'www.example.com', '123', nil, '/forum/questions/', nil, 'tag=networking&order=newest', 'top']
+ # Gem::URI.for('https', *values)
+ # # => #<Gem::URI::HTTPS https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
+ # Gem::URI.for('foo', *values, default: Gem::URI::HTTP)
+ # # => #<Gem::URI::HTTP foo://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
+ #
+ 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
+
+ #
+ # Base class for all Gem::URI exceptions.
+ #
+ class Error < StandardError; end
+ #
+ # Not a Gem::URI.
+ #
+ class InvalidURIError < Error; end
+ #
+ # Not a Gem::URI component.
+ #
+ class InvalidComponentError < Error; end
+ #
+ # Gem::URI is valid, bad usage is not.
+ #
+ class BadURIError < Error; end
+
+ # Returns a 9-element array representing the parts of the \Gem::URI
+ # formed from the string +uri+;
+ # each array element is a string or +nil+:
+ #
+ # names = %w[scheme userinfo host port registry path opaque query fragment]
+ # values = Gem::URI.split('https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top')
+ # names.zip(values)
+ # # =>
+ # [["scheme", "https"],
+ # ["userinfo", "john.doe"],
+ # ["host", "www.example.com"],
+ # ["port", "123"],
+ # ["registry", nil],
+ # ["path", "/forum/questions/"],
+ # ["opaque", nil],
+ # ["query", "tag=networking&order=newest"],
+ # ["fragment", "top"]]
+ #
+ def self.split(uri)
+ RFC3986_PARSER.split(uri)
+ end
+
+ # Returns a new \Gem::URI object constructed from the given string +uri+:
+ #
+ # Gem::URI.parse('https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top')
+ # # => #<Gem::URI::HTTPS https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
+ # Gem::URI.parse('http://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top')
+ # # => #<Gem::URI::HTTP http://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
+ #
+ # It's recommended to first ::escape string +uri+
+ # if it may contain invalid Gem::URI characters.
+ #
+ def self.parse(uri)
+ RFC3986_PARSER.parse(uri)
+ end
+
+ # Merges the given Gem::URI strings +str+
+ # per {RFC 2396}[https://www.rfc-editor.org/rfc/rfc2396.html].
+ #
+ # Each string in +str+ is converted to an
+ # {RFC3986 Gem::URI}[https://www.rfc-editor.org/rfc/rfc3986.html] before being merged.
+ #
+ # Examples:
+ #
+ # Gem::URI.join("http://example.com/","main.rbx")
+ # # => #<Gem::URI::HTTP http://example.com/main.rbx>
+ #
+ # Gem::URI.join('http://example.com', 'foo')
+ # # => #<Gem::URI::HTTP http://example.com/foo>
+ #
+ # Gem::URI.join('http://example.com', '/foo', '/bar')
+ # # => #<Gem::URI::HTTP http://example.com/bar>
+ #
+ # Gem::URI.join('http://example.com', '/foo', 'bar')
+ # # => #<Gem::URI::HTTP http://example.com/bar>
+ #
+ # Gem::URI.join('http://example.com', '/foo/', 'bar')
+ # # => #<Gem::URI::HTTP http://example.com/foo/bar>
+ #
+ def self.join(*str)
+ RFC3986_PARSER.join(*str)
+ end
+
+ #
+ # == Synopsis
+ #
+ # Gem::URI::extract(str[, schemes][,&blk])
+ #
+ # == Args
+ #
+ # +str+::
+ # String to extract URIs from.
+ # +schemes+::
+ # Limit Gem::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 "rubygems/vendor/uri/lib/uri"
+ #
+ # Gem::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"]
+ #
+ def self.extract(str, schemes = nil, &block) # :nodoc:
+ warn "Gem::URI.extract is obsolete", uplevel: 1 if $VERBOSE
+ DEFAULT_PARSER.extract(str, schemes, &block)
+ end
+
+ #
+ # == Synopsis
+ #
+ # Gem::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 Gem::URI-like strings.
+ # The Regexp object returned by this method includes arbitrary
+ # number of capture group (parentheses). Never rely on its number.
+ #
+ # == Usage
+ #
+ # require 'rubygems/vendor/uri/lib/uri'
+ #
+ # # extract first Gem::URI from html_string
+ # html_string.slice(Gem::URI.regexp)
+ #
+ # # remove ftp URIs
+ # html_string.sub(Gem::URI.regexp(['ftp']), '')
+ #
+ # # You should not rely on the number of parentheses
+ # html_string.scan(Gem::URI.regexp) do |*matches|
+ # p $&
+ # end
+ #
+ def self.regexp(schemes = nil)# :nodoc:
+ warn "Gem::URI.regexp is obsolete", uplevel: 1 if $VERBOSE
+ DEFAULT_PARSER.make_regexp(schemes)
+ end
+
+ TBLENCWWWCOMP_ = {} # :nodoc:
+ 256.times do |i|
+ TBLENCWWWCOMP_[-i.chr] = -('%%%02X' % i)
+ end
+ TBLENCURICOMP_ = TBLENCWWWCOMP_.dup.freeze
+ TBLENCWWWCOMP_[' '] = '+'
+ TBLENCWWWCOMP_.freeze
+ TBLDECWWWCOMP_ = {} # :nodoc:
+ 256.times do |i|
+ h, l = i>>4, i&15
+ TBLDECWWWCOMP_[-('%%%X%X' % [h, l])] = -i.chr
+ TBLDECWWWCOMP_[-('%%%x%X' % [h, l])] = -i.chr
+ TBLDECWWWCOMP_[-('%%%X%x' % [h, l])] = -i.chr
+ TBLDECWWWCOMP_[-('%%%x%x' % [h, l])] = -i.chr
+ end
+ TBLDECWWWCOMP_['+'] = ' '
+ TBLDECWWWCOMP_.freeze
+
+ # Returns a URL-encoded string derived from the given string +str+.
+ #
+ # The returned string:
+ #
+ # - Preserves:
+ #
+ # - Characters <tt>'*'</tt>, <tt>'.'</tt>, <tt>'-'</tt>, and <tt>'_'</tt>.
+ # - Character in ranges <tt>'a'..'z'</tt>, <tt>'A'..'Z'</tt>,
+ # and <tt>'0'..'9'</tt>.
+ #
+ # Example:
+ #
+ # Gem::URI.encode_www_form_component('*.-_azAZ09')
+ # # => "*.-_azAZ09"
+ #
+ # - Converts:
+ #
+ # - Character <tt>' '</tt> to character <tt>'+'</tt>.
+ # - Any other character to "percent notation";
+ # the percent notation for character <i>c</i> is <tt>'%%%X' % c.ord</tt>.
+ #
+ # Example:
+ #
+ # Gem::URI.encode_www_form_component('Here are some punctuation characters: ,;?:')
+ # # => "Here+are+some+punctuation+characters%3A+%2C%3B%3F%3A"
+ #
+ # Encoding:
+ #
+ # - If +str+ has encoding Encoding::ASCII_8BIT, argument +enc+ is ignored.
+ # - Otherwise +str+ is converted first to Encoding::UTF_8
+ # (with suitable character replacements),
+ # and then to encoding +enc+.
+ #
+ # In either case, the returned string has forced encoding Encoding::US_ASCII.
+ #
+ # Related: Gem::URI.encode_uri_component (encodes <tt>' '</tt> as <tt>'%20'</tt>).
+ def self.encode_www_form_component(str, enc=nil)
+ _encode_uri_component(/[^*\-.0-9A-Z_a-z]/, TBLENCWWWCOMP_, str, enc)
+ end
+
+ # Returns a string decoded from the given \URL-encoded string +str+.
+ #
+ # The given string is first encoded as Encoding::ASCII-8BIT (using String#b),
+ # then decoded (as below), and finally force-encoded to the given encoding +enc+.
+ #
+ # The returned string:
+ #
+ # - Preserves:
+ #
+ # - Characters <tt>'*'</tt>, <tt>'.'</tt>, <tt>'-'</tt>, and <tt>'_'</tt>.
+ # - Character in ranges <tt>'a'..'z'</tt>, <tt>'A'..'Z'</tt>,
+ # and <tt>'0'..'9'</tt>.
+ #
+ # Example:
+ #
+ # Gem::URI.decode_www_form_component('*.-_azAZ09')
+ # # => "*.-_azAZ09"
+ #
+ # - Converts:
+ #
+ # - Character <tt>'+'</tt> to character <tt>' '</tt>.
+ # - Each "percent notation" to an ASCII character.
+ #
+ # Example:
+ #
+ # Gem::URI.decode_www_form_component('Here+are+some+punctuation+characters%3A+%2C%3B%3F%3A')
+ # # => "Here are some punctuation characters: ,;?:"
+ #
+ # Related: Gem::URI.decode_uri_component (preserves <tt>'+'</tt>).
+ def self.decode_www_form_component(str, enc=Encoding::UTF_8)
+ _decode_uri_component(/\+|%\h\h/, str, enc)
+ end
+
+ # Like Gem::URI.encode_www_form_component, except that <tt>' '</tt> (space)
+ # is encoded as <tt>'%20'</tt> (instead of <tt>'+'</tt>).
+ def self.encode_uri_component(str, enc=nil)
+ _encode_uri_component(/[^*\-.0-9A-Z_a-z]/, TBLENCURICOMP_, str, enc)
+ end
+
+ # Like Gem::URI.decode_www_form_component, except that <tt>'+'</tt> is preserved.
+ def self.decode_uri_component(str, enc=Encoding::UTF_8)
+ _decode_uri_component(/%\h\h/, str, enc)
+ end
+
+ def self._encode_uri_component(regexp, table, str, enc)
+ 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!(regexp, table)
+ str.force_encoding(Encoding::US_ASCII)
+ end
+ private_class_method :_encode_uri_component
+
+ def self._decode_uri_component(regexp, str, enc)
+ raise ArgumentError, "invalid %-encoding (#{str})" if /%(?!\h\h)/.match?(str)
+ str.b.gsub(regexp, TBLDECWWWCOMP_).force_encoding(enc)
+ end
+ private_class_method :_decode_uri_component
+
+ # Returns a URL-encoded string derived from the given
+ # {Enumerable}[https://docs.ruby-lang.org/en/master/Enumerable.html#module-Enumerable-label-Enumerable+in+Ruby+Classes]
+ # +enum+.
+ #
+ # The result is suitable for use as form data
+ # for an \HTTP request whose <tt>Content-Type</tt> is
+ # <tt>'application/x-www-form-urlencoded'</tt>.
+ #
+ # The returned string consists of the elements of +enum+,
+ # each converted to one or more URL-encoded strings,
+ # and all joined with character <tt>'&'</tt>.
+ #
+ # Simple examples:
+ #
+ # Gem::URI.encode_www_form([['foo', 0], ['bar', 1], ['baz', 2]])
+ # # => "foo=0&bar=1&baz=2"
+ # Gem::URI.encode_www_form({foo: 0, bar: 1, baz: 2})
+ # # => "foo=0&bar=1&baz=2"
+ #
+ # The returned string is formed using method Gem::URI.encode_www_form_component,
+ # which converts certain characters:
+ #
+ # Gem::URI.encode_www_form('f#o': '/', 'b-r': '$', 'b z': '@')
+ # # => "f%23o=%2F&b-r=%24&b+z=%40"
+ #
+ # When +enum+ is Array-like, each element +ele+ is converted to a field:
+ #
+ # - If +ele+ is an array of two or more elements,
+ # the field is formed from its first two elements
+ # (and any additional elements are ignored):
+ #
+ # name = Gem::URI.encode_www_form_component(ele[0], enc)
+ # value = Gem::URI.encode_www_form_component(ele[1], enc)
+ # "#{name}=#{value}"
+ #
+ # Examples:
+ #
+ # Gem::URI.encode_www_form([%w[foo bar], %w[baz bat bah]])
+ # # => "foo=bar&baz=bat"
+ # Gem::URI.encode_www_form([['foo', 0], ['bar', :baz, 'bat']])
+ # # => "foo=0&bar=baz"
+ #
+ # - If +ele+ is an array of one element,
+ # the field is formed from <tt>ele[0]</tt>:
+ #
+ # Gem::URI.encode_www_form_component(ele[0])
+ #
+ # Example:
+ #
+ # Gem::URI.encode_www_form([['foo'], [:bar], [0]])
+ # # => "foo&bar&0"
+ #
+ # - Otherwise the field is formed from +ele+:
+ #
+ # Gem::URI.encode_www_form_component(ele)
+ #
+ # Example:
+ #
+ # Gem::URI.encode_www_form(['foo', :bar, 0])
+ # # => "foo&bar&0"
+ #
+ # The elements of an Array-like +enum+ may be mixture:
+ #
+ # Gem::URI.encode_www_form([['foo', 0], ['bar', 1, 2], ['baz'], :bat])
+ # # => "foo=0&bar=1&baz&bat"
+ #
+ # When +enum+ is Hash-like,
+ # each +key+/+value+ pair is converted to one or more fields:
+ #
+ # - If +value+ is
+ # {Array-convertible}[https://docs.ruby-lang.org/en/master/implicit_conversion_rdoc.html#label-Array-Convertible+Objects],
+ # each element +ele+ in +value+ is paired with +key+ to form a field:
+ #
+ # name = Gem::URI.encode_www_form_component(key, enc)
+ # value = Gem::URI.encode_www_form_component(ele, enc)
+ # "#{name}=#{value}"
+ #
+ # Example:
+ #
+ # Gem::URI.encode_www_form({foo: [:bar, 1], baz: [:bat, :bam, 2]})
+ # # => "foo=bar&foo=1&baz=bat&baz=bam&baz=2"
+ #
+ # - Otherwise, +key+ and +value+ are paired to form a field:
+ #
+ # name = Gem::URI.encode_www_form_component(key, enc)
+ # value = Gem::URI.encode_www_form_component(value, enc)
+ # "#{name}=#{value}"
+ #
+ # Example:
+ #
+ # Gem::URI.encode_www_form({foo: 0, bar: 1, baz: 2})
+ # # => "foo=0&bar=1&baz=2"
+ #
+ # The elements of a Hash-like +enum+ may be mixture:
+ #
+ # Gem::URI.encode_www_form({foo: [0, 1], bar: 2})
+ # # => "foo=0&foo=1&bar=2"
+ #
+ 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
+
+ # Returns name/value pairs derived from the given string +str+,
+ # which must be an ASCII string.
+ #
+ # The method may be used to decode the body of Net::HTTPResponse object +res+
+ # for which <tt>res['Content-Type']</tt> is <tt>'application/x-www-form-urlencoded'</tt>.
+ #
+ # The returned data is an array of 2-element subarrays;
+ # each subarray is a name/value pair (both are strings).
+ # Each returned string has encoding +enc+,
+ # and has had invalid characters removed via
+ # {String#scrub}[https://docs.ruby-lang.org/en/master/String.html#method-i-scrub].
+ #
+ # A simple example:
+ #
+ # Gem::URI.decode_www_form('foo=0&bar=1&baz')
+ # # => [["foo", "0"], ["bar", "1"], ["baz", ""]]
+ #
+ # The returned strings have certain conversions,
+ # similar to those performed in Gem::URI.decode_www_form_component:
+ #
+ # Gem::URI.decode_www_form('f%23o=%2F&b-r=%24&b+z=%40')
+ # # => [["f#o", "/"], ["b-r", "$"], ["b z", "@"]]
+ #
+ # The given string may contain consecutive separators:
+ #
+ # Gem::URI.decode_www_form('foo=0&&bar=1&&baz=2')
+ # # => [["foo", "0"], ["", ""], ["bar", "1"], ["", ""], ["baz", "2"]]
+ #
+ # A different separator may be specified:
+ #
+ # Gem::URI.decode_www_form('foo=0--bar=1--baz', separator: '--')
+ # # => [["foo", "0"], ["bar", "1"], ["baz", ""]]
+ #
+ def self.decode_www_form(str, enc=Encoding::UTF_8, separator: '&', use__charset_: false, isindex: false)
+ raise ArgumentError, "the input of #{self.name}.#{__method__} must be ASCII only string" unless str.ascii_only?
+ ary = []
+ return ary if str.empty?
+ enc = Encoding.find(enc)
+ str.b.each_line(separator) do |string|
+ string.chomp!(separator)
+ key, sep, val = string.partition('=')
+ if isindex
+ if sep.empty?
+ val = key
+ key = +''
+ end
+ isindex = false
+ end
+
+ if use__charset_ and key == '_charset_' and e = get_encoding(val)
+ enc = e
+ use__charset_ = false
+ end
+
+ key.gsub!(/\+|%\h\h/, TBLDECWWWCOMP_)
+ if val
+ val.gsub!(/\+|%\h\h/, TBLDECWWWCOMP_)
+ else
+ val = +''
+ end
+
+ ary << [key, val]
+ end
+ ary.each do |k, v|
+ k.force_encoding(enc)
+ k.scrub!
+ v.force_encoding(enc)
+ v.scrub!
+ end
+ ary
+ end
+
+ private
+=begin command for WEB_ENCODINGS_
+ curl https://encoding.spec.whatwg.org/encodings.json|
+ ruby -rjson -e 'H={}
+ h={
+ "shift_jis"=>"Windows-31J",
+ "euc-jp"=>"cp51932",
+ "iso-2022-jp"=>"cp50221",
+ "x-mac-cyrillic"=>"macCyrillic",
+ }
+ JSON($<.read).map{|x|x["encodings"]}.flatten.each{|x|
+ Encoding.find(n=h.fetch(n=x["name"].downcase,n))rescue next
+ x["labels"].each{|y|H[y]=n}
+ }
+ puts "{"
+ H.each{|k,v|puts %[ #{k.dump}=>#{v.dump},]}
+ puts "}"
+'
+=end
+ WEB_ENCODINGS_ = {
+ "unicode-1-1-utf-8"=>"utf-8",
+ "utf-8"=>"utf-8",
+ "utf8"=>"utf-8",
+ "866"=>"ibm866",
+ "cp866"=>"ibm866",
+ "csibm866"=>"ibm866",
+ "ibm866"=>"ibm866",
+ "csisolatin2"=>"iso-8859-2",
+ "iso-8859-2"=>"iso-8859-2",
+ "iso-ir-101"=>"iso-8859-2",
+ "iso8859-2"=>"iso-8859-2",
+ "iso88592"=>"iso-8859-2",
+ "iso_8859-2"=>"iso-8859-2",
+ "iso_8859-2:1987"=>"iso-8859-2",
+ "l2"=>"iso-8859-2",
+ "latin2"=>"iso-8859-2",
+ "csisolatin3"=>"iso-8859-3",
+ "iso-8859-3"=>"iso-8859-3",
+ "iso-ir-109"=>"iso-8859-3",
+ "iso8859-3"=>"iso-8859-3",
+ "iso88593"=>"iso-8859-3",
+ "iso_8859-3"=>"iso-8859-3",
+ "iso_8859-3:1988"=>"iso-8859-3",
+ "l3"=>"iso-8859-3",
+ "latin3"=>"iso-8859-3",
+ "csisolatin4"=>"iso-8859-4",
+ "iso-8859-4"=>"iso-8859-4",
+ "iso-ir-110"=>"iso-8859-4",
+ "iso8859-4"=>"iso-8859-4",
+ "iso88594"=>"iso-8859-4",
+ "iso_8859-4"=>"iso-8859-4",
+ "iso_8859-4:1988"=>"iso-8859-4",
+ "l4"=>"iso-8859-4",
+ "latin4"=>"iso-8859-4",
+ "csisolatincyrillic"=>"iso-8859-5",
+ "cyrillic"=>"iso-8859-5",
+ "iso-8859-5"=>"iso-8859-5",
+ "iso-ir-144"=>"iso-8859-5",
+ "iso8859-5"=>"iso-8859-5",
+ "iso88595"=>"iso-8859-5",
+ "iso_8859-5"=>"iso-8859-5",
+ "iso_8859-5:1988"=>"iso-8859-5",
+ "arabic"=>"iso-8859-6",
+ "asmo-708"=>"iso-8859-6",
+ "csiso88596e"=>"iso-8859-6",
+ "csiso88596i"=>"iso-8859-6",
+ "csisolatinarabic"=>"iso-8859-6",
+ "ecma-114"=>"iso-8859-6",
+ "iso-8859-6"=>"iso-8859-6",
+ "iso-8859-6-e"=>"iso-8859-6",
+ "iso-8859-6-i"=>"iso-8859-6",
+ "iso-ir-127"=>"iso-8859-6",
+ "iso8859-6"=>"iso-8859-6",
+ "iso88596"=>"iso-8859-6",
+ "iso_8859-6"=>"iso-8859-6",
+ "iso_8859-6:1987"=>"iso-8859-6",
+ "csisolatingreek"=>"iso-8859-7",
+ "ecma-118"=>"iso-8859-7",
+ "elot_928"=>"iso-8859-7",
+ "greek"=>"iso-8859-7",
+ "greek8"=>"iso-8859-7",
+ "iso-8859-7"=>"iso-8859-7",
+ "iso-ir-126"=>"iso-8859-7",
+ "iso8859-7"=>"iso-8859-7",
+ "iso88597"=>"iso-8859-7",
+ "iso_8859-7"=>"iso-8859-7",
+ "iso_8859-7:1987"=>"iso-8859-7",
+ "sun_eu_greek"=>"iso-8859-7",
+ "csiso88598e"=>"iso-8859-8",
+ "csisolatinhebrew"=>"iso-8859-8",
+ "hebrew"=>"iso-8859-8",
+ "iso-8859-8"=>"iso-8859-8",
+ "iso-8859-8-e"=>"iso-8859-8",
+ "iso-ir-138"=>"iso-8859-8",
+ "iso8859-8"=>"iso-8859-8",
+ "iso88598"=>"iso-8859-8",
+ "iso_8859-8"=>"iso-8859-8",
+ "iso_8859-8:1988"=>"iso-8859-8",
+ "visual"=>"iso-8859-8",
+ "csisolatin6"=>"iso-8859-10",
+ "iso-8859-10"=>"iso-8859-10",
+ "iso-ir-157"=>"iso-8859-10",
+ "iso8859-10"=>"iso-8859-10",
+ "iso885910"=>"iso-8859-10",
+ "l6"=>"iso-8859-10",
+ "latin6"=>"iso-8859-10",
+ "iso-8859-13"=>"iso-8859-13",
+ "iso8859-13"=>"iso-8859-13",
+ "iso885913"=>"iso-8859-13",
+ "iso-8859-14"=>"iso-8859-14",
+ "iso8859-14"=>"iso-8859-14",
+ "iso885914"=>"iso-8859-14",
+ "csisolatin9"=>"iso-8859-15",
+ "iso-8859-15"=>"iso-8859-15",
+ "iso8859-15"=>"iso-8859-15",
+ "iso885915"=>"iso-8859-15",
+ "iso_8859-15"=>"iso-8859-15",
+ "l9"=>"iso-8859-15",
+ "iso-8859-16"=>"iso-8859-16",
+ "cskoi8r"=>"koi8-r",
+ "koi"=>"koi8-r",
+ "koi8"=>"koi8-r",
+ "koi8-r"=>"koi8-r",
+ "koi8_r"=>"koi8-r",
+ "koi8-ru"=>"koi8-u",
+ "koi8-u"=>"koi8-u",
+ "dos-874"=>"windows-874",
+ "iso-8859-11"=>"windows-874",
+ "iso8859-11"=>"windows-874",
+ "iso885911"=>"windows-874",
+ "tis-620"=>"windows-874",
+ "windows-874"=>"windows-874",
+ "cp1250"=>"windows-1250",
+ "windows-1250"=>"windows-1250",
+ "x-cp1250"=>"windows-1250",
+ "cp1251"=>"windows-1251",
+ "windows-1251"=>"windows-1251",
+ "x-cp1251"=>"windows-1251",
+ "ansi_x3.4-1968"=>"windows-1252",
+ "ascii"=>"windows-1252",
+ "cp1252"=>"windows-1252",
+ "cp819"=>"windows-1252",
+ "csisolatin1"=>"windows-1252",
+ "ibm819"=>"windows-1252",
+ "iso-8859-1"=>"windows-1252",
+ "iso-ir-100"=>"windows-1252",
+ "iso8859-1"=>"windows-1252",
+ "iso88591"=>"windows-1252",
+ "iso_8859-1"=>"windows-1252",
+ "iso_8859-1:1987"=>"windows-1252",
+ "l1"=>"windows-1252",
+ "latin1"=>"windows-1252",
+ "us-ascii"=>"windows-1252",
+ "windows-1252"=>"windows-1252",
+ "x-cp1252"=>"windows-1252",
+ "cp1253"=>"windows-1253",
+ "windows-1253"=>"windows-1253",
+ "x-cp1253"=>"windows-1253",
+ "cp1254"=>"windows-1254",
+ "csisolatin5"=>"windows-1254",
+ "iso-8859-9"=>"windows-1254",
+ "iso-ir-148"=>"windows-1254",
+ "iso8859-9"=>"windows-1254",
+ "iso88599"=>"windows-1254",
+ "iso_8859-9"=>"windows-1254",
+ "iso_8859-9:1989"=>"windows-1254",
+ "l5"=>"windows-1254",
+ "latin5"=>"windows-1254",
+ "windows-1254"=>"windows-1254",
+ "x-cp1254"=>"windows-1254",
+ "cp1255"=>"windows-1255",
+ "windows-1255"=>"windows-1255",
+ "x-cp1255"=>"windows-1255",
+ "cp1256"=>"windows-1256",
+ "windows-1256"=>"windows-1256",
+ "x-cp1256"=>"windows-1256",
+ "cp1257"=>"windows-1257",
+ "windows-1257"=>"windows-1257",
+ "x-cp1257"=>"windows-1257",
+ "cp1258"=>"windows-1258",
+ "windows-1258"=>"windows-1258",
+ "x-cp1258"=>"windows-1258",
+ "x-mac-cyrillic"=>"macCyrillic",
+ "x-mac-ukrainian"=>"macCyrillic",
+ "chinese"=>"gbk",
+ "csgb2312"=>"gbk",
+ "csiso58gb231280"=>"gbk",
+ "gb2312"=>"gbk",
+ "gb_2312"=>"gbk",
+ "gb_2312-80"=>"gbk",
+ "gbk"=>"gbk",
+ "iso-ir-58"=>"gbk",
+ "x-gbk"=>"gbk",
+ "gb18030"=>"gb18030",
+ "big5"=>"big5",
+ "big5-hkscs"=>"big5",
+ "cn-big5"=>"big5",
+ "csbig5"=>"big5",
+ "x-x-big5"=>"big5",
+ "cseucpkdfmtjapanese"=>"cp51932",
+ "euc-jp"=>"cp51932",
+ "x-euc-jp"=>"cp51932",
+ "csiso2022jp"=>"cp50221",
+ "iso-2022-jp"=>"cp50221",
+ "csshiftjis"=>"Windows-31J",
+ "ms932"=>"Windows-31J",
+ "ms_kanji"=>"Windows-31J",
+ "shift-jis"=>"Windows-31J",
+ "shift_jis"=>"Windows-31J",
+ "sjis"=>"Windows-31J",
+ "windows-31j"=>"Windows-31J",
+ "x-sjis"=>"Windows-31J",
+ "cseuckr"=>"euc-kr",
+ "csksc56011987"=>"euc-kr",
+ "euc-kr"=>"euc-kr",
+ "iso-ir-149"=>"euc-kr",
+ "korean"=>"euc-kr",
+ "ks_c_5601-1987"=>"euc-kr",
+ "ks_c_5601-1989"=>"euc-kr",
+ "ksc5601"=>"euc-kr",
+ "ksc_5601"=>"euc-kr",
+ "windows-949"=>"euc-kr",
+ "utf-16be"=>"utf-16be",
+ "utf-16"=>"utf-16le",
+ "utf-16le"=>"utf-16le",
+ } # :nodoc:
+ Ractor.make_shareable(WEB_ENCODINGS_) if defined?(Ractor)
+
+ # :nodoc:
+ # return encoding or nil
+ # http://encoding.spec.whatwg.org/#concept-encoding-get
+ def self.get_encoding(label)
+ Encoding.find(WEB_ENCODINGS_[label.to_str.strip.downcase]) rescue nil
+ end
+end # module Gem::URI
+
+module Gem
+
+ #
+ # Returns a \Gem::URI object derived from the given +uri+,
+ # which may be a \Gem::URI string or an existing \Gem::URI object:
+ #
+ # # Returns a new Gem::URI.
+ # uri = Gem::URI('http://github.com/ruby/ruby')
+ # # => #<Gem::URI::HTTP http://github.com/ruby/ruby>
+ # # Returns the given Gem::URI.
+ # Gem::URI(uri)
+ # # => #<Gem::URI::HTTP http://github.com/ruby/ruby>
+ #
+ def URI(uri)
+ if uri.is_a?(Gem::URI::Generic)
+ uri
+ elsif uri = String.try_convert(uri)
+ Gem::URI.parse(uri)
+ else
+ raise ArgumentError,
+ "bad argument (expected Gem::URI object or Gem::URI string)"
+ end
+ end
+ module_function :URI
+end