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Diffstat (limited to 'lib/rubygems/vendor/uri/lib/uri/rfc2396_parser.rb')
| -rw-r--r-- | lib/rubygems/vendor/uri/lib/uri/rfc2396_parser.rb | 539 |
1 files changed, 539 insertions, 0 deletions
diff --git a/lib/rubygems/vendor/uri/lib/uri/rfc2396_parser.rb b/lib/rubygems/vendor/uri/lib/uri/rfc2396_parser.rb new file mode 100644 index 0000000000..735a269f2c --- /dev/null +++ b/lib/rubygems/vendor/uri/lib/uri/rfc2396_parser.rb @@ -0,0 +1,539 @@ +# frozen_string_literal: false +#-- +# = 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 +# + +module Gem::URI + # + # Includes Gem::URI::REGEXP::PATTERN + # + module RFC2396_REGEXP + # + # Patterns used to parse Gem::URI's + # + module PATTERN + # :stopdoc: + + # RFC 2396 (Gem::URI Generic Syntax) + # RFC 2732 (IPv6 Literal Addresses in URL's) + # RFC 2373 (IPv6 Addressing Architecture) + + # alpha = lowalpha | upalpha + ALPHA = "a-zA-Z" + # alphanum = alpha | digit + ALNUM = "#{ALPHA}\\d" + + # hex = digit | "A" | "B" | "C" | "D" | "E" | "F" | + # "a" | "b" | "c" | "d" | "e" | "f" + HEX = "a-fA-F\\d" + # escaped = "%" hex hex + ESCAPED = "%[#{HEX}]{2}" + # mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | + # "(" | ")" + # unreserved = alphanum | mark + UNRESERVED = "\\-_.!~*'()#{ALNUM}" + # reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | + # "$" | "," + # reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | + # "$" | "," | "[" | "]" (RFC 2732) + RESERVED = ";/?:@&=+$,\\[\\]" + + # domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum + DOMLABEL = "(?:[#{ALNUM}](?:[-#{ALNUM}]*[#{ALNUM}])?)" + # toplabel = alpha | alpha *( alphanum | "-" ) alphanum + TOPLABEL = "(?:[#{ALPHA}](?:[-#{ALNUM}]*[#{ALNUM}])?)" + # hostname = *( domainlabel "." ) toplabel [ "." ] + HOSTNAME = "(?:#{DOMLABEL}\\.)*#{TOPLABEL}\\.?" + + # :startdoc: + end # PATTERN + + # :startdoc: + end # REGEXP + + # Class that parses String's into Gem::URI's. + # + # It contains a Hash set of patterns and Regexp's that match and validate. + # + class RFC2396_Parser + include RFC2396_REGEXP + + # + # == Synopsis + # + # Gem::URI::Parser.new([opts]) + # + # == Args + # + # The constructor accepts a hash as options for parser. + # Keys of options are pattern names of Gem::URI components + # and values of options are pattern strings. + # The constructor generates set of regexps for parsing URIs. + # + # You can use the following keys: + # + # * :ESCAPED (Gem::URI::PATTERN::ESCAPED in default) + # * :UNRESERVED (Gem::URI::PATTERN::UNRESERVED in default) + # * :DOMLABEL (Gem::URI::PATTERN::DOMLABEL in default) + # * :TOPLABEL (Gem::URI::PATTERN::TOPLABEL in default) + # * :HOSTNAME (Gem::URI::PATTERN::HOSTNAME in default) + # + # == Examples + # + # p = Gem::URI::Parser.new(:ESCAPED => "(?:%[a-fA-F0-9]{2}|%u[a-fA-F0-9]{4})") + # u = p.parse("http://example.jp/%uABCD") #=> #<Gem::URI::HTTP http://example.jp/%uABCD> + # Gem::URI.parse(u.to_s) #=> raises Gem::URI::InvalidURIError + # + # s = "http://example.com/ABCD" + # u1 = p.parse(s) #=> #<Gem::URI::HTTP http://example.com/ABCD> + # u2 = Gem::URI.parse(s) #=> #<Gem::URI::HTTP http://example.com/ABCD> + # u1 == u2 #=> true + # u1.eql?(u2) #=> false + # + def initialize(opts = {}) + @pattern = initialize_pattern(opts) + @pattern.each_value(&:freeze) + @pattern.freeze + + @regexp = initialize_regexp(@pattern) + @regexp.each_value(&:freeze) + @regexp.freeze + end + + # The Hash of patterns. + # + # See also Gem::URI::Parser.initialize_pattern. + attr_reader :pattern + + # The Hash of Regexp. + # + # See also Gem::URI::Parser.initialize_regexp. + attr_reader :regexp + + # Returns a split Gem::URI against +regexp[:ABS_URI]+. + def split(uri) + case uri + when '' + # null uri + + when @regexp[:ABS_URI] + scheme, opaque, userinfo, host, port, + registry, path, query, fragment = $~[1..-1] + + # Gem::URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] + + # absoluteURI = scheme ":" ( hier_part | opaque_part ) + # hier_part = ( net_path | abs_path ) [ "?" query ] + # opaque_part = uric_no_slash *uric + + # abs_path = "/" path_segments + # net_path = "//" authority [ abs_path ] + + # authority = server | reg_name + # server = [ [ userinfo "@" ] hostport ] + + if !scheme + raise InvalidURIError, + "bad Gem::URI(absolute but no scheme): #{uri}" + end + if !opaque && (!path && (!host && !registry)) + raise InvalidURIError, + "bad Gem::URI(absolute but no path): #{uri}" + end + + when @regexp[:REL_URI] + scheme = nil + opaque = nil + + userinfo, host, port, registry, + rel_segment, abs_path, query, fragment = $~[1..-1] + if rel_segment && abs_path + path = rel_segment + abs_path + elsif rel_segment + path = rel_segment + elsif abs_path + path = abs_path + end + + # Gem::URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] + + # relativeURI = ( net_path | abs_path | rel_path ) [ "?" query ] + + # net_path = "//" authority [ abs_path ] + # abs_path = "/" path_segments + # rel_path = rel_segment [ abs_path ] + + # authority = server | reg_name + # server = [ [ userinfo "@" ] hostport ] + + else + raise InvalidURIError, "bad Gem::URI(is not Gem::URI?): #{uri}" + end + + path = '' if !path && !opaque # (see RFC2396 Section 5.2) + ret = [ + scheme, + userinfo, host, port, # X + registry, # X + path, # Y + opaque, # Y + query, + fragment + ] + return ret + end + + # + # == Args + # + # +uri+:: + # String + # + # == Description + # + # Parses +uri+ and constructs either matching Gem::URI scheme object + # (File, FTP, HTTP, HTTPS, LDAP, LDAPS, or MailTo) or Gem::URI::Generic. + # + # == Usage + # + # p = Gem::URI::Parser.new + # p.parse("ldap://ldap.example.com/dc=example?user=john") + # #=> #<Gem::URI::LDAP ldap://ldap.example.com/dc=example?user=john> + # + def parse(uri) + Gem::URI.for(*self.split(uri), self) + end + + # + # == Args + # + # +uris+:: + # an Array of Strings + # + # == Description + # + # Attempts to parse and merge a set of URIs. + # + def join(*uris) + uris[0] = convert_to_uri(uris[0]) + uris.inject :merge + end + + # + # :call-seq: + # extract( str ) + # extract( str, schemes ) + # extract( str, schemes ) {|item| block } + # + # == Args + # + # +str+:: + # String to search + # +schemes+:: + # Patterns to apply to +str+ + # + # == Description + # + # Attempts to parse and merge a set of URIs. + # If no +block+ given, then returns the result, + # else it calls +block+ for each element in result. + # + # See also Gem::URI::Parser.make_regexp. + # + def extract(str, schemes = nil) + if block_given? + str.scan(make_regexp(schemes)) { yield $& } + nil + else + result = [] + str.scan(make_regexp(schemes)) { result.push $& } + result + end + end + + # Returns Regexp that is default +self.regexp[:ABS_URI_REF]+, + # unless +schemes+ is provided. Then it is a Regexp.union with +self.pattern[:X_ABS_URI]+. + def make_regexp(schemes = nil) + unless schemes + @regexp[:ABS_URI_REF] + else + /(?=#{Regexp.union(*schemes)}:)#{@pattern[:X_ABS_URI]}/x + end + end + + # + # :call-seq: + # escape( str ) + # escape( str, unsafe ) + # + # == Args + # + # +str+:: + # String to make safe + # +unsafe+:: + # Regexp to apply. Defaults to +self.regexp[:UNSAFE]+ + # + # == Description + # + # Constructs a safe String from +str+, removing unsafe characters, + # replacing them with codes. + # + def escape(str, unsafe = @regexp[:UNSAFE]) + unless unsafe.kind_of?(Regexp) + # perhaps unsafe is String object + unsafe = Regexp.new("[#{Regexp.quote(unsafe)}]", false) + end + str.gsub(unsafe) do + us = $& + tmp = '' + us.each_byte do |uc| + tmp << sprintf('%%%02X', uc) + end + tmp + end.force_encoding(Encoding::US_ASCII) + end + + # + # :call-seq: + # unescape( str ) + # unescape( str, escaped ) + # + # == Args + # + # +str+:: + # String to remove escapes from + # +escaped+:: + # Regexp to apply. Defaults to +self.regexp[:ESCAPED]+ + # + # == Description + # + # Removes escapes from +str+. + # + def unescape(str, escaped = @regexp[:ESCAPED]) + enc = str.encoding + enc = Encoding::UTF_8 if enc == Encoding::US_ASCII + str.gsub(escaped) { [$&[1, 2]].pack('H2').force_encoding(enc) } + end + + @@to_s = Kernel.instance_method(:to_s) + if @@to_s.respond_to?(:bind_call) + def inspect + @@to_s.bind_call(self) + end + else + def inspect + @@to_s.bind(self).call + end + end + + private + + # Constructs the default Hash of patterns. + def initialize_pattern(opts = {}) + ret = {} + ret[:ESCAPED] = escaped = (opts.delete(:ESCAPED) || PATTERN::ESCAPED) + ret[:UNRESERVED] = unreserved = opts.delete(:UNRESERVED) || PATTERN::UNRESERVED + ret[:RESERVED] = reserved = opts.delete(:RESERVED) || PATTERN::RESERVED + ret[:DOMLABEL] = opts.delete(:DOMLABEL) || PATTERN::DOMLABEL + ret[:TOPLABEL] = opts.delete(:TOPLABEL) || PATTERN::TOPLABEL + ret[:HOSTNAME] = hostname = opts.delete(:HOSTNAME) + + # RFC 2396 (Gem::URI Generic Syntax) + # RFC 2732 (IPv6 Literal Addresses in URL's) + # RFC 2373 (IPv6 Addressing Architecture) + + # uric = reserved | unreserved | escaped + ret[:URIC] = uric = "(?:[#{unreserved}#{reserved}]|#{escaped})" + # uric_no_slash = unreserved | escaped | ";" | "?" | ":" | "@" | + # "&" | "=" | "+" | "$" | "," + ret[:URIC_NO_SLASH] = uric_no_slash = "(?:[#{unreserved};?:@&=+$,]|#{escaped})" + # query = *uric + ret[:QUERY] = query = "#{uric}*" + # fragment = *uric + ret[:FRAGMENT] = fragment = "#{uric}*" + + # hostname = *( domainlabel "." ) toplabel [ "." ] + # reg-name = *( unreserved / pct-encoded / sub-delims ) # RFC3986 + unless hostname + ret[:HOSTNAME] = hostname = "(?:[a-zA-Z0-9\\-.]|%\\h\\h)+" + end + + # RFC 2373, APPENDIX B: + # IPv6address = hexpart [ ":" IPv4address ] + # IPv4address = 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT + # hexpart = hexseq | hexseq "::" [ hexseq ] | "::" [ hexseq ] + # hexseq = hex4 *( ":" hex4) + # hex4 = 1*4HEXDIG + # + # XXX: This definition has a flaw. "::" + IPv4address must be + # allowed too. Here is a replacement. + # + # IPv4address = 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT + ret[:IPV4ADDR] = ipv4addr = "\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}" + # hex4 = 1*4HEXDIG + hex4 = "[#{PATTERN::HEX}]{1,4}" + # lastpart = hex4 | IPv4address + lastpart = "(?:#{hex4}|#{ipv4addr})" + # hexseq1 = *( hex4 ":" ) hex4 + hexseq1 = "(?:#{hex4}:)*#{hex4}" + # hexseq2 = *( hex4 ":" ) lastpart + hexseq2 = "(?:#{hex4}:)*#{lastpart}" + # IPv6address = hexseq2 | [ hexseq1 ] "::" [ hexseq2 ] + ret[:IPV6ADDR] = ipv6addr = "(?:#{hexseq2}|(?:#{hexseq1})?::(?:#{hexseq2})?)" + + # IPv6prefix = ( hexseq1 | [ hexseq1 ] "::" [ hexseq1 ] ) "/" 1*2DIGIT + # unused + + # ipv6reference = "[" IPv6address "]" (RFC 2732) + ret[:IPV6REF] = ipv6ref = "\\[#{ipv6addr}\\]" + + # host = hostname | IPv4address + # host = hostname | IPv4address | IPv6reference (RFC 2732) + ret[:HOST] = host = "(?:#{hostname}|#{ipv4addr}|#{ipv6ref})" + # port = *digit + ret[:PORT] = port = '\d*' + # hostport = host [ ":" port ] + ret[:HOSTPORT] = hostport = "#{host}(?::#{port})?" + + # userinfo = *( unreserved | escaped | + # ";" | ":" | "&" | "=" | "+" | "$" | "," ) + ret[:USERINFO] = userinfo = "(?:[#{unreserved};:&=+$,]|#{escaped})*" + + # pchar = unreserved | escaped | + # ":" | "@" | "&" | "=" | "+" | "$" | "," + pchar = "(?:[#{unreserved}:@&=+$,]|#{escaped})" + # param = *pchar + param = "#{pchar}*" + # segment = *pchar *( ";" param ) + segment = "#{pchar}*(?:;#{param})*" + # path_segments = segment *( "/" segment ) + ret[:PATH_SEGMENTS] = path_segments = "#{segment}(?:/#{segment})*" + + # server = [ [ userinfo "@" ] hostport ] + server = "(?:#{userinfo}@)?#{hostport}" + # reg_name = 1*( unreserved | escaped | "$" | "," | + # ";" | ":" | "@" | "&" | "=" | "+" ) + ret[:REG_NAME] = reg_name = "(?:[#{unreserved}$,;:@&=+]|#{escaped})+" + # authority = server | reg_name + authority = "(?:#{server}|#{reg_name})" + + # rel_segment = 1*( unreserved | escaped | + # ";" | "@" | "&" | "=" | "+" | "$" | "," ) + ret[:REL_SEGMENT] = rel_segment = "(?:[#{unreserved};@&=+$,]|#{escaped})+" + + # scheme = alpha *( alpha | digit | "+" | "-" | "." ) + ret[:SCHEME] = scheme = "[#{PATTERN::ALPHA}][\\-+.#{PATTERN::ALPHA}\\d]*" + + # abs_path = "/" path_segments + ret[:ABS_PATH] = abs_path = "/#{path_segments}" + # rel_path = rel_segment [ abs_path ] + ret[:REL_PATH] = rel_path = "#{rel_segment}(?:#{abs_path})?" + # net_path = "//" authority [ abs_path ] + ret[:NET_PATH] = net_path = "//#{authority}(?:#{abs_path})?" + + # hier_part = ( net_path | abs_path ) [ "?" query ] + ret[:HIER_PART] = hier_part = "(?:#{net_path}|#{abs_path})(?:\\?(?:#{query}))?" + # opaque_part = uric_no_slash *uric + ret[:OPAQUE_PART] = opaque_part = "#{uric_no_slash}#{uric}*" + + # absoluteURI = scheme ":" ( hier_part | opaque_part ) + ret[:ABS_URI] = abs_uri = "#{scheme}:(?:#{hier_part}|#{opaque_part})" + # relativeURI = ( net_path | abs_path | rel_path ) [ "?" query ] + ret[:REL_URI] = rel_uri = "(?:#{net_path}|#{abs_path}|#{rel_path})(?:\\?#{query})?" + + # Gem::URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] + ret[:URI_REF] = "(?:#{abs_uri}|#{rel_uri})?(?:##{fragment})?" + + ret[:X_ABS_URI] = " + (#{scheme}): (?# 1: scheme) + (?: + (#{opaque_part}) (?# 2: opaque) + | + (?:(?: + //(?: + (?:(?:(#{userinfo})@)? (?# 3: userinfo) + (?:(#{host})(?::(\\d*))?))? (?# 4: host, 5: port) + | + (#{reg_name}) (?# 6: registry) + ) + | + (?!//)) (?# XXX: '//' is the mark for hostport) + (#{abs_path})? (?# 7: path) + )(?:\\?(#{query}))? (?# 8: query) + ) + (?:\\#(#{fragment}))? (?# 9: fragment) + " + + ret[:X_REL_URI] = " + (?: + (?: + // + (?: + (?:(#{userinfo})@)? (?# 1: userinfo) + (#{host})?(?::(\\d*))? (?# 2: host, 3: port) + | + (#{reg_name}) (?# 4: registry) + ) + ) + | + (#{rel_segment}) (?# 5: rel_segment) + )? + (#{abs_path})? (?# 6: abs_path) + (?:\\?(#{query}))? (?# 7: query) + (?:\\#(#{fragment}))? (?# 8: fragment) + " + + ret + end + + # Constructs the default Hash of Regexp's. + def initialize_regexp(pattern) + ret = {} + + # for Gem::URI::split + ret[:ABS_URI] = Regexp.new('\A\s*+' + pattern[:X_ABS_URI] + '\s*\z', Regexp::EXTENDED) + ret[:REL_URI] = Regexp.new('\A\s*+' + pattern[:X_REL_URI] + '\s*\z', Regexp::EXTENDED) + + # for Gem::URI::extract + ret[:URI_REF] = Regexp.new(pattern[:URI_REF]) + ret[:ABS_URI_REF] = Regexp.new(pattern[:X_ABS_URI], Regexp::EXTENDED) + ret[:REL_URI_REF] = Regexp.new(pattern[:X_REL_URI], Regexp::EXTENDED) + + # for Gem::URI::escape/unescape + ret[:ESCAPED] = Regexp.new(pattern[:ESCAPED]) + ret[:UNSAFE] = Regexp.new("[^#{pattern[:UNRESERVED]}#{pattern[:RESERVED]}]") + + # for Generic#initialize + ret[:SCHEME] = Regexp.new("\\A#{pattern[:SCHEME]}\\z") + ret[:USERINFO] = Regexp.new("\\A#{pattern[:USERINFO]}\\z") + ret[:HOST] = Regexp.new("\\A#{pattern[:HOST]}\\z") + ret[:PORT] = Regexp.new("\\A#{pattern[:PORT]}\\z") + ret[:OPAQUE] = Regexp.new("\\A#{pattern[:OPAQUE_PART]}\\z") + ret[:REGISTRY] = Regexp.new("\\A#{pattern[:REG_NAME]}\\z") + ret[:ABS_PATH] = Regexp.new("\\A#{pattern[:ABS_PATH]}\\z") + ret[:REL_PATH] = Regexp.new("\\A#{pattern[:REL_PATH]}\\z") + ret[:QUERY] = Regexp.new("\\A#{pattern[:QUERY]}\\z") + ret[:FRAGMENT] = Regexp.new("\\A#{pattern[:FRAGMENT]}\\z") + + ret + end + + def convert_to_uri(uri) + if uri.is_a?(Gem::URI::Generic) + uri + elsif uri = String.try_convert(uri) + parse(uri) + else + raise ArgumentError, + "bad argument (expected Gem::URI object or Gem::URI string)" + end + end + + end # class Parser +end # module Gem::URI |