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authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/uri/rfc2396_parser.rb
Fresh start
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+#--
+# = uri/common.rb
+#
+# Author:: Akira Yamada <akira@ruby-lang.org>
+# Revision:: $Id$
+# License::
+# You can redistribute it and/or modify it under the same term as Ruby.
+#
+# See URI for general documentation
+#
+
+module URI
+ #
+ # Includes URI::REGEXP::PATTERN
+ #
+ module RFC2396_REGEXP
+ #
+ # Patterns used to parse URI's
+ #
+ module PATTERN
+ # :stopdoc:
+
+ # RFC 2396 (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 URI's
+ #
+ # It contains a Hash set of patterns and Regexp's that match and validate.
+ #
+ class RFC2396_Parser
+ include RFC2396_REGEXP
+
+ #
+ # == Synopsis
+ #
+ # URI::Parser.new([opts])
+ #
+ # == Args
+ #
+ # The constructor accepts a hash as options for parser.
+ # Keys of options are pattern names of 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 (URI::PATTERN::ESCAPED in default)
+ # * :UNRESERVED (URI::PATTERN::UNRESERVED in default)
+ # * :DOMLABEL (URI::PATTERN::DOMLABEL in default)
+ # * :TOPLABEL (URI::PATTERN::TOPLABEL in default)
+ # * :HOSTNAME (URI::PATTERN::HOSTNAME in default)
+ #
+ # == Examples
+ #
+ # p = URI::Parser.new(:ESCAPED => "(?:%[a-fA-F0-9]{2}|%u[a-fA-F0-9]{4})")
+ # u = p.parse("http://example.jp/%uABCD") #=> #<URI::HTTP:0xb78cf4f8 URL:http://example.jp/%uABCD>
+ # URI.parse(u.to_s) #=> raises URI::InvalidURIError
+ #
+ # s = "http://example.com/ABCD"
+ # u1 = p.parse(s) #=> #<URI::HTTP:0xb78c3220 URL:http://example.com/ABCD>
+ # u2 = URI.parse(s) #=> #<URI::HTTP:0xb78b6d54 URL: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 URI::Parser.initialize_pattern
+ attr_reader :pattern
+
+ # The Hash of Regexp
+ #
+ # see also URI::Parser.initialize_regexp
+ attr_reader :regexp
+
+ # Returns a split 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]
+
+ # 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 URI(absolute but no scheme): #{uri}"
+ end
+ if !opaque && (!path && (!host && !registry))
+ raise InvalidURIError,
+ "bad 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
+
+ # 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 URI(is not 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 URI scheme object
+ # (FTP, HTTP, HTTPS, LDAP, LDAPS, or MailTo) or URI::Generic
+ #
+ # == Usage
+ #
+ # p = URI::Parser.new
+ # p.parse("ldap://ldap.example.com/dc=example?user=john")
+ # #=> #<URI::LDAP:0x00000000b9e7e8 URL:ldap://ldap.example.com/dc=example?user=john>
+ #
+ def parse(uri)
+ scheme, userinfo, host, port,
+ registry, path, opaque, query, fragment = self.split(uri)
+
+ if scheme && URI.scheme_list.include?(scheme.upcase)
+ URI.scheme_list[scheme.upcase].new(scheme, userinfo, host, port,
+ registry, path, opaque, query,
+ fragment, self)
+ else
+ Generic.new(scheme, userinfo, host, port,
+ registry, path, opaque, query,
+ fragment, self)
+ end
+ 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 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 = $&
+ tmp = ''
+ us.each_byte do |uc|
+ tmp << sprintf('%%%02X', uc)
+ end
+ tmp
+ end.force_encoding(Encoding::US_ASCII)
+ end
+
+ #
+ # :call-seq:
+ # unescape( str )
+ # unescape( str, unsafe )
+ #
+ # == Args
+ #
+ # +str+::
+ # String to remove escapes from
+ # +unsafe+::
+ # Regexp to apply. Defaults to self.regexp[:ESCAPED]
+ #
+ # == Description
+ #
+ # Removes escapes from +str+
+ #
+ def unescape(str, escaped = @regexp[:ESCAPED])
+ str.gsub(escaped) { [$&[1, 2].hex].pack('C') }.force_encoding(str.encoding)
+ end
+
+ @@to_s = Kernel.instance_method(:to_s)
+ def inspect
+ @@to_s.bind(self).call
+ 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 (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
+ 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})?"
+
+ # 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 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 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 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?(URI::Generic)
+ uri
+ elsif uri = String.try_convert(uri)
+ parse(uri)
+ else
+ raise ArgumentError,
+ "bad argument (expected URI object or URI string)"
+ end
+ end
+
+ end # class Parser
+end # module URI