Module: URI::REGEXP::PATTERN

Defined in:: lib/uri/common.rb

Overview

Patterns used to parse URI's

Constant Summary collapse

ALPHA = alpha = lowalpha | upalpha

"a-zA-Z"

ALNUM = alphanum = alpha | digit

"#{ALPHA}\\d"

HEX = hex = digit | "A" | "B" | "C" | "D" | "E" | "F" | "a" | "b" | "c" | "d" | "e" | "f"

"a-fA-F\\d"

ESCAPED = escaped = "%" hex hex

"%[#{HEX}]{2}"

UNRESERVED = mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")" unreserved = alphanum | mark

"-_.!~*'()#{ALNUM}"

RESERVED = reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | "," reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | "," | "[" | "]" (RFC 2732)

";/?:@&=+$,\\[\\]"

URIC = uric = reserved | unreserved | escaped

"(?:[#{UNRESERVED}#{RESERVED}]|#{ESCAPED})"

URIC_NO_SLASH = uric_no_slash = unreserved | escaped | ";" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | ","

"(?:[#{UNRESERVED};?:@&=+$,]|#{ESCAPED})"

QUERY = query = *uric

"#{URIC}*"

FRAGMENT = fragment = *uric

"#{URIC}*"

DOMLABEL = domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum

"(?:[#{ALNUM}](?:[-#{ALNUM}]*[#{ALNUM}])?)"

TOPLABEL = toplabel = alpha | alpha *( alphanum | "-" ) alphanum

"(?:[#{ALPHA}](?:[-#{ALNUM}]*[#{ALNUM}])?)"

HOSTNAME = hostname = *( domainlabel "." ) toplabel [ "." ]

"(?:#{DOMLABEL}\\.)*#{TOPLABEL}\\.?"

IPV4ADDR = 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

"\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}"

HEX4 = hex4 = 1*4HEXDIG

"[#{HEX}]{1,4}"

LASTPART = lastpart = hex4 | IPv4address

"(?:#{HEX4}|#{IPV4ADDR})"

HEXSEQ1 = hexseq1 = *( hex4 ":" ) hex4

"(?:#{HEX4}:)*#{HEX4}"

HEXSEQ2 = hexseq2 = *( hex4 ":" ) lastpart

"(?:#{HEX4}:)*#{LASTPART}"

IPV6ADDR = IPv6address = hexseq2 | [ hexseq1 ] "::" [ hexseq2 ]

"(?:#{HEXSEQ2}|(?:#{HEXSEQ1})?::(?:#{HEXSEQ2})?)"

IPV6REF = ipv6reference = "[" IPv6address "]" (RFC 2732)

"\\[#{IPV6ADDR}\\]"

HOST = host = hostname | IPv4address host = hostname | IPv4address | IPv6reference (RFC 2732)

"(?:#{HOSTNAME}|#{IPV4ADDR}|#{IPV6REF})"

PORT = port = *digit

'\d*'

HOSTPORT = hostport = host [ ":" port ]

"#{HOST}(?::#{PORT})?"

USERINFO = userinfo = *( unreserved | escaped | ";" | ":" | "&" | "=" | "+" | "$" | "," )

"(?:[#{UNRESERVED};:&=+$,]|#{ESCAPED})*"

PCHAR = pchar = unreserved | escaped | ":" | "@" | "&" | "=" | "+" | "$" | ","

"(?:[#{UNRESERVED}:@&=+$,]|#{ESCAPED})"

PARAM = param = *pchar

"#{PCHAR}*"

SEGMENT = segment = *pchar *( ";" param )

"#{PCHAR}*(?:;#{PARAM})*"

PATH_SEGMENTS = path_segments = segment *( "/" segment )

"#{SEGMENT}(?:/#{SEGMENT})*"

SERVER = server = [ [ userinfo "@" ] hostport ]

"(?:#{USERINFO}@)?#{HOSTPORT}"

REG_NAME = reg_name = 1*( unreserved | escaped | "$" | "," | ";" | ":" | "@" | "&" | "=" | "+" )

"(?:[#{UNRESERVED}$,;:@&=+]|#{ESCAPED})+"

AUTHORITY = authority = server | reg_name

"(?:#{SERVER}|#{REG_NAME})"

REL_SEGMENT = rel_segment = 1*( unreserved | escaped | ";" | "@" | "&" | "=" | "+" | "$" | "," )

"(?:[#{UNRESERVED};@&=+$,]|#{ESCAPED})+"

SCHEME = scheme = alpha *( alpha | digit | "+" | "-" | "." )

"[#{ALPHA}][-+.#{ALPHA}\\d]*"

ABS_PATH = abs_path = "/" path_segments

"/#{PATH_SEGMENTS}"

REL_PATH = rel_path = rel_segment [ abs_path ]

"#{REL_SEGMENT}(?:#{ABS_PATH})?"

NET_PATH = net_path = "//" authority [ abs_path ]

"//#{AUTHORITY}(?:#{ABS_PATH})?"

HIER_PART = hier_part = ( net_path | abs_path ) [ "?" query ]

"(?:#{NET_PATH}|#{ABS_PATH})(?:\\?(?:#{QUERY}))?"

OPAQUE_PART = opaque_part = uric_no_slash *uric

"#{URIC_NO_SLASH}#{URIC}*"

ABS_URI = absoluteURI = scheme ":" ( hier_part | opaque_part )

"#{SCHEME}:(?:#{HIER_PART}|#{OPAQUE_PART})"

REL_URI = relativeURI = ( net_path | abs_path | rel_path ) [ "?" query ]

"(?:#{NET_PATH}|#{ABS_PATH}|#{REL_PATH})(?:\\?#{QUERY})?"

URI_REF = URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ]

"(?:#{ABS_URI}|#{REL_URI})?(?:##{FRAGMENT})?"

X_ABS_URI = XXX:

"
  (#{PATTERN::SCHEME}):                     (?# 1: scheme)
  (?:
     (#{PATTERN::OPAQUE_PART})              (?# 2: opaque)
  |
     (?:(?:
       //(?:
           (?:(?:(#{PATTERN::USERINFO})@)?  (?# 3: userinfo)
             (?:(#{PATTERN::HOST})(?::(\\d*))?))?(?# 4: host, 5: port)
         |
           (#{PATTERN::REG_NAME})           (?# 6: registry)
         )
       |
       (?!//))                              (?# XXX: '//' is the mark for hostport)
       (#{PATTERN::ABS_PATH})?              (?# 7: path)
     )(?:\\?(#{PATTERN::QUERY}))?           (?# 8: query)
  )
  (?:\\#(#{PATTERN::FRAGMENT}))?            (?# 9: fragment)
"

X_REL_URI =

"
  (?:
    (?:
      //
      (?:
        (?:(#{PATTERN::USERINFO})@)?       (?# 1: userinfo)
          (#{PATTERN::HOST})?(?::(\\d*))?  (?# 2: host, 3: port)
      |
        (#{PATTERN::REG_NAME})             (?# 4: registry)
      )
    )
  |
    (#{PATTERN::REL_SEGMENT})              (?# 5: rel_segment)
  )?
  (#{PATTERN::ABS_PATH})?                  (?# 6: abs_path)
  (?:\\?(#{PATTERN::QUERY}))?              (?# 7: query)
  (?:\\#(#{PATTERN::FRAGMENT}))?           (?# 8: fragment)
"