612 lines
17 KiB
Ruby
612 lines
17 KiB
Ruby
# = uri/common.rb
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#
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# Author:: Akira Yamada <akira@ruby-lang.org>
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# Revision:: $Id$
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# License::
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# You can redistribute it and/or modify it under the same term as Ruby.
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#
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module URI
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module REGEXP
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#
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# Patterns used to parse URI's
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#
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module PATTERN
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# :stopdoc:
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# RFC 2396 (URI Generic Syntax)
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# RFC 2732 (IPv6 Literal Addresses in URL's)
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# RFC 2373 (IPv6 Addressing Architecture)
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# alpha = lowalpha | upalpha
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ALPHA = "a-zA-Z"
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# alphanum = alpha | digit
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ALNUM = "#{ALPHA}\\d"
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# hex = digit | "A" | "B" | "C" | "D" | "E" | "F" |
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# "a" | "b" | "c" | "d" | "e" | "f"
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HEX = "a-fA-F\\d"
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# escaped = "%" hex hex
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ESCAPED = "%[#{HEX}]{2}"
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# mark = "-" | "_" | "." | "!" | "~" | "*" | "'" |
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# "(" | ")"
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# unreserved = alphanum | mark
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UNRESERVED = "-_.!~*'()#{ALNUM}"
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# reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
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# "$" | ","
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# reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
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# "$" | "," | "[" | "]" (RFC 2732)
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RESERVED = ";/?:@&=+$,\\[\\]"
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# uric = reserved | unreserved | escaped
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URIC = "(?:[#{UNRESERVED}#{RESERVED}]|#{ESCAPED})"
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# uric_no_slash = unreserved | escaped | ";" | "?" | ":" | "@" |
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# "&" | "=" | "+" | "$" | ","
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URIC_NO_SLASH = "(?:[#{UNRESERVED};?:@&=+$,]|#{ESCAPED})"
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# query = *uric
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QUERY = "#{URIC}*"
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# fragment = *uric
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FRAGMENT = "#{URIC}*"
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# domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
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DOMLABEL = "(?:[#{ALNUM}](?:[-#{ALNUM}]*[#{ALNUM}])?)"
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# toplabel = alpha | alpha *( alphanum | "-" ) alphanum
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TOPLABEL = "(?:[#{ALPHA}](?:[-#{ALNUM}]*[#{ALNUM}])?)"
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# hostname = *( domainlabel "." ) toplabel [ "." ]
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HOSTNAME = "(?:#{DOMLABEL}\\.)*#{TOPLABEL}\\.?"
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# RFC 2373, APPENDIX B:
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# IPv6address = hexpart [ ":" IPv4address ]
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# IPv4address = 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT
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# hexpart = hexseq | hexseq "::" [ hexseq ] | "::" [ hexseq ]
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# hexseq = hex4 *( ":" hex4)
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# hex4 = 1*4HEXDIG
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#
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# XXX: This definition has a flaw. "::" + IPv4address must be
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# allowed too. Here is a replacement.
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#
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# IPv4address = 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT
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IPV4ADDR = "\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}"
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# hex4 = 1*4HEXDIG
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HEX4 = "[#{HEX}]{1,4}"
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# lastpart = hex4 | IPv4address
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LASTPART = "(?:#{HEX4}|#{IPV4ADDR})"
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# hexseq1 = *( hex4 ":" ) hex4
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HEXSEQ1 = "(?:#{HEX4}:)*#{HEX4}"
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# hexseq2 = *( hex4 ":" ) lastpart
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HEXSEQ2 = "(?:#{HEX4}:)*#{LASTPART}"
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# IPv6address = hexseq2 | [ hexseq1 ] "::" [ hexseq2 ]
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IPV6ADDR = "(?:#{HEXSEQ2}|(?:#{HEXSEQ1})?::(?:#{HEXSEQ2})?)"
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# IPv6prefix = ( hexseq1 | [ hexseq1 ] "::" [ hexseq1 ] ) "/" 1*2DIGIT
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# unused
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# ipv6reference = "[" IPv6address "]" (RFC 2732)
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IPV6REF = "\\[#{IPV6ADDR}\\]"
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# host = hostname | IPv4address
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# host = hostname | IPv4address | IPv6reference (RFC 2732)
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HOST = "(?:#{HOSTNAME}|#{IPV4ADDR}|#{IPV6REF})"
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# port = *digit
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PORT = '\d*'
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# hostport = host [ ":" port ]
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HOSTPORT = "#{HOST}(?::#{PORT})?"
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# userinfo = *( unreserved | escaped |
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# ";" | ":" | "&" | "=" | "+" | "$" | "," )
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USERINFO = "(?:[#{UNRESERVED};:&=+$,]|#{ESCAPED})*"
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# pchar = unreserved | escaped |
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# ":" | "@" | "&" | "=" | "+" | "$" | ","
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PCHAR = "(?:[#{UNRESERVED}:@&=+$,]|#{ESCAPED})"
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# param = *pchar
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PARAM = "#{PCHAR}*"
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# segment = *pchar *( ";" param )
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SEGMENT = "#{PCHAR}*(?:;#{PARAM})*"
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# path_segments = segment *( "/" segment )
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PATH_SEGMENTS = "#{SEGMENT}(?:/#{SEGMENT})*"
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# server = [ [ userinfo "@" ] hostport ]
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SERVER = "(?:#{USERINFO}@)?#{HOSTPORT}"
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# reg_name = 1*( unreserved | escaped | "$" | "," |
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# ";" | ":" | "@" | "&" | "=" | "+" )
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REG_NAME = "(?:[#{UNRESERVED}$,;:@&=+]|#{ESCAPED})+"
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# authority = server | reg_name
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AUTHORITY = "(?:#{SERVER}|#{REG_NAME})"
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# rel_segment = 1*( unreserved | escaped |
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# ";" | "@" | "&" | "=" | "+" | "$" | "," )
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REL_SEGMENT = "(?:[#{UNRESERVED};@&=+$,]|#{ESCAPED})+"
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# scheme = alpha *( alpha | digit | "+" | "-" | "." )
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SCHEME = "[#{ALPHA}][-+.#{ALPHA}\\d]*"
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# abs_path = "/" path_segments
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ABS_PATH = "/#{PATH_SEGMENTS}"
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# rel_path = rel_segment [ abs_path ]
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REL_PATH = "#{REL_SEGMENT}(?:#{ABS_PATH})?"
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# net_path = "//" authority [ abs_path ]
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NET_PATH = "//#{AUTHORITY}(?:#{ABS_PATH})?"
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# hier_part = ( net_path | abs_path ) [ "?" query ]
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HIER_PART = "(?:#{NET_PATH}|#{ABS_PATH})(?:\\?(?:#{QUERY}))?"
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# opaque_part = uric_no_slash *uric
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OPAQUE_PART = "#{URIC_NO_SLASH}#{URIC}*"
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# absoluteURI = scheme ":" ( hier_part | opaque_part )
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ABS_URI = "#{SCHEME}:(?:#{HIER_PART}|#{OPAQUE_PART})"
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# relativeURI = ( net_path | abs_path | rel_path ) [ "?" query ]
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REL_URI = "(?:#{NET_PATH}|#{ABS_PATH}|#{REL_PATH})(?:\\?#{QUERY})?"
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# URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ]
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URI_REF = "(?:#{ABS_URI}|#{REL_URI})?(?:##{FRAGMENT})?"
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# XXX:
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X_ABS_URI = "
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(#{PATTERN::SCHEME}): (?# 1: scheme)
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(?:
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(#{PATTERN::OPAQUE_PART}) (?# 2: opaque)
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(?:(?:
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//(?:
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(?:(?:(#{PATTERN::USERINFO})@)? (?# 3: userinfo)
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(?:(#{PATTERN::HOST})(?::(\\d*))?))?(?# 4: host, 5: port)
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(#{PATTERN::REG_NAME}) (?# 6: registry)
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)
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(?!//)) (?# XXX: '//' is the mark for hostport)
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(#{PATTERN::ABS_PATH})? (?# 7: path)
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)(?:\\?(#{PATTERN::QUERY}))? (?# 8: query)
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)
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(?:\\#(#{PATTERN::FRAGMENT}))? (?# 9: fragment)
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"
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X_REL_URI = "
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(?:
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(?:
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//
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(?:
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(?:(#{PATTERN::USERINFO})@)? (?# 1: userinfo)
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(#{PATTERN::HOST})?(?::(\\d*))? (?# 2: host, 3: port)
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(#{PATTERN::REG_NAME}) (?# 4: registry)
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)
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)
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(#{PATTERN::REL_SEGMENT}) (?# 5: rel_segment)
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)?
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(#{PATTERN::ABS_PATH})? (?# 6: abs_path)
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(?:\\?(#{PATTERN::QUERY}))? (?# 7: query)
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(?:\\#(#{PATTERN::FRAGMENT}))? (?# 8: fragment)
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"
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# :startdoc:
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end # PATTERN
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# :stopdoc:
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# for URI::split
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ABS_URI = Regexp.new('^' + PATTERN::X_ABS_URI + '$', #'
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Regexp::EXTENDED).freeze
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REL_URI = Regexp.new('^' + PATTERN::X_REL_URI + '$', #'
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Regexp::EXTENDED).freeze
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# for URI::extract
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URI_REF = Regexp.new(PATTERN::URI_REF).freeze
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ABS_URI_REF = Regexp.new(PATTERN::X_ABS_URI, Regexp::EXTENDED).freeze
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REL_URI_REF = Regexp.new(PATTERN::X_REL_URI, Regexp::EXTENDED).freeze
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# for URI::escape/unescape
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ESCAPED = Regexp.new(PATTERN::ESCAPED).freeze
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UNSAFE = Regexp.new("[^#{PATTERN::UNRESERVED}#{PATTERN::RESERVED}]").freeze
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# for Generic#initialize
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SCHEME = Regexp.new("^#{PATTERN::SCHEME}$").freeze #"
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USERINFO = Regexp.new("^#{PATTERN::USERINFO}$").freeze #"
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HOST = Regexp.new("^#{PATTERN::HOST}$").freeze #"
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PORT = Regexp.new("^#{PATTERN::PORT}$").freeze #"
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OPAQUE = Regexp.new("^#{PATTERN::OPAQUE_PART}$").freeze #"
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REGISTRY = Regexp.new("^#{PATTERN::REG_NAME}$").freeze #"
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ABS_PATH = Regexp.new("^#{PATTERN::ABS_PATH}$").freeze #"
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REL_PATH = Regexp.new("^#{PATTERN::REL_PATH}$").freeze #"
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QUERY = Regexp.new("^#{PATTERN::QUERY}$").freeze #"
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FRAGMENT = Regexp.new("^#{PATTERN::FRAGMENT}$").freeze #"
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# :startdoc:
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end # REGEXP
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module Util # :nodoc:
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def make_components_hash(klass, array_hash)
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tmp = {}
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if array_hash.kind_of?(Array) &&
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array_hash.size == klass.component.size - 1
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klass.component[1..-1].each_index do |i|
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begin
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tmp[klass.component[i + 1]] = array_hash[i].clone
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rescue TypeError
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tmp[klass.component[i + 1]] = array_hash[i]
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end
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end
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elsif array_hash.kind_of?(Hash)
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array_hash.each do |key, value|
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begin
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tmp[key] = value.clone
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rescue TypeError
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tmp[key] = value
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end
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end
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else
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raise ArgumentError,
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"expected Array of or Hash of components of #{klass.to_s} (#{klass.component[1..-1].join(', ')})"
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end
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tmp[:scheme] = klass.to_s.sub(/\A.*::/, '').downcase
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return tmp
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end
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module_function :make_components_hash
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end
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module Escape
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include REGEXP
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#
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# == Synopsis
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#
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# URI.escape(str [, unsafe])
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#
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# == Args
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#
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# +str+::
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# String to replaces in.
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# +unsafe+::
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# Regexp that matches all symbols that must be replaced with codes.
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# By default uses <tt>REGEXP::UNSAFE</tt>.
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# When this argument is a String, it represents a character set.
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#
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# == Description
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#
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# Escapes the string, replacing all unsafe characters with codes.
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#
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# == Usage
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#
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# require 'uri'
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#
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# enc_uri = URI.escape("http://example.com/?a=\11\15")
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# p enc_uri
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# # => "http://example.com/?a=%09%0D"
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#
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# p URI.unescape(enc_uri)
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# # => "http://example.com/?a=\t\r"
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#
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# p URI.escape("@?@!", "!?")
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# # => "@%3F@%21"
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#
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def escape(str, unsafe = UNSAFE)
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unless unsafe.kind_of?(Regexp)
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# perhaps unsafe is String object
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unsafe = Regexp.new("[#{Regexp.quote(unsafe)}]", false, 'N')
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end
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str.gsub(unsafe) do
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us = $&
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tmp = ''
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us.each_byte do |uc|
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tmp << sprintf('%%%02X', uc)
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end
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tmp
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end
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end
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alias encode escape
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#
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# == Synopsis
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#
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# URI.unescape(str)
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#
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# == Args
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#
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# +str+::
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# Unescapes the string.
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#
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# == Usage
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#
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# require 'uri'
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#
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# enc_uri = URI.escape("http://example.com/?a=\11\15")
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# p enc_uri
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# # => "http://example.com/?a=%09%0D"
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#
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# p URI.unescape(enc_uri)
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# # => "http://example.com/?a=\t\r"
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#
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def unescape(str)
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str.gsub(ESCAPED) do
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$&[1,2].hex.chr
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end
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end
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alias decode unescape
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end
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include REGEXP
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extend Escape
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@@schemes = {}
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#
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# Base class for all URI exceptions.
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#
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class Error < StandardError; end
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#
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# Not a URI.
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#
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class InvalidURIError < Error; end
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#
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# Not a URI component.
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#
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class InvalidComponentError < Error; end
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#
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# URI is valid, bad usage is not.
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#
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class BadURIError < Error; end
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#
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# == Synopsis
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#
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# URI::split(uri)
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#
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# == Args
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#
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# +uri+::
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# String with URI.
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#
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# == Description
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#
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# Splits the string on following parts and returns array with result:
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#
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# * Scheme
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# * Userinfo
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# * Host
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# * Port
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# * Registry
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# * Path
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# * Opaque
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# * Query
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# * Fragment
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#
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# == Usage
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#
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# require 'uri'
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#
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# p URI.split("http://www.ruby-lang.org/")
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# # => ["http", nil, "www.ruby-lang.org", nil, nil, "/", nil, nil, nil]
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#
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def self.split(uri)
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case uri
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when ''
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# null uri
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when ABS_URI
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scheme, opaque, userinfo, host, port,
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registry, path, query, fragment = $~[1..-1]
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# URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ]
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# absoluteURI = scheme ":" ( hier_part | opaque_part )
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# hier_part = ( net_path | abs_path ) [ "?" query ]
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# opaque_part = uric_no_slash *uric
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# abs_path = "/" path_segments
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# net_path = "//" authority [ abs_path ]
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# authority = server | reg_name
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# server = [ [ userinfo "@" ] hostport ]
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if !scheme
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raise InvalidURIError,
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"bad URI(absolute but no scheme): #{uri}"
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end
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if !opaque && (!path && (!host && !registry))
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raise InvalidURIError,
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"bad URI(absolute but no path): #{uri}"
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end
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when REL_URI
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scheme = nil
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opaque = nil
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userinfo, host, port, registry,
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rel_segment, abs_path, query, fragment = $~[1..-1]
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if rel_segment && abs_path
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path = rel_segment + abs_path
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elsif rel_segment
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path = rel_segment
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elsif abs_path
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path = abs_path
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end
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# URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ]
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# relativeURI = ( net_path | abs_path | rel_path ) [ "?" query ]
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# net_path = "//" authority [ abs_path ]
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# abs_path = "/" path_segments
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# rel_path = rel_segment [ abs_path ]
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# authority = server | reg_name
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# server = [ [ userinfo "@" ] hostport ]
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else
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raise InvalidURIError, "bad URI(is not URI?): #{uri}"
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end
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path = '' if !path && !opaque # (see RFC2396 Section 5.2)
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ret = [
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scheme,
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userinfo, host, port, # X
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registry, # X
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path, # Y
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opaque, # Y
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query,
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fragment
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]
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return ret
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end
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#
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# == Synopsis
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#
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# URI::parse(uri_str)
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#
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# == Args
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#
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# +uri_str+::
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# String with URI.
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#
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# == Description
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#
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# Creates one of the URI's subclasses instance from the string.
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#
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# == Raises
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#
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# URI::InvalidURIError
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# Raised if URI given is not a correct one.
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#
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# == Usage
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#
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# require 'uri'
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#
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# uri = URI.parse("http://www.ruby-lang.org/")
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# p uri
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# # => #<URI::HTTP:0x202281be URL:http://www.ruby-lang.org/>
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# p uri.scheme
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# # => "http"
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# p uri.host
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# # => "www.ruby-lang.org"
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#
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def self.parse(uri)
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scheme, userinfo, host, port,
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registry, path, opaque, query, fragment = self.split(uri)
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if scheme && @@schemes.include?(scheme.upcase)
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@@schemes[scheme.upcase].new(scheme, userinfo, host, port,
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registry, path, opaque, query,
|
|
fragment)
|
|
else
|
|
Generic.new(scheme, userinfo, host, port,
|
|
registry, path, opaque, query,
|
|
fragment)
|
|
end
|
|
end
|
|
|
|
#
|
|
# == Synopsis
|
|
#
|
|
# URI::join(str[, str, ...])
|
|
#
|
|
# == Args
|
|
#
|
|
# +str+::
|
|
# String(s) to work with
|
|
#
|
|
# == Description
|
|
#
|
|
# Joins URIs.
|
|
#
|
|
# == Usage
|
|
#
|
|
# require 'uri'
|
|
#
|
|
# p URI.join("http://localhost/","main.rbx")
|
|
# # => #<URI::HTTP:0x2022ac02 URL:http://localhost/main.rbx>
|
|
#
|
|
def self.join(*str)
|
|
u = self.parse(str[0])
|
|
str[1 .. -1].each do |x|
|
|
u = u.merge(x)
|
|
end
|
|
u
|
|
end
|
|
|
|
#
|
|
# == Synopsis
|
|
#
|
|
# URI::extract(str[, schemes][,&blk])
|
|
#
|
|
# == Args
|
|
#
|
|
# +str+::
|
|
# String to extract URIs from.
|
|
# +schemes+::
|
|
# Limit URI matching to a 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:test@example.com and here also.")
|
|
# # => ["http://foo.example.com/bla", "mailto:test@example.com"]
|
|
#
|
|
def self.extract(str, schemes = nil, &block)
|
|
if block_given?
|
|
str.scan(regexp(schemes)) { yield $& }
|
|
nil
|
|
else
|
|
result = []
|
|
str.scan(regexp(schemes)) { result.push $& }
|
|
result
|
|
end
|
|
end
|
|
|
|
#
|
|
# == 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 it's 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
|
|
#
|
|
def self.regexp(schemes = nil)
|
|
unless schemes
|
|
ABS_URI_REF
|
|
else
|
|
/(?=#{Regexp.union(*schemes)}:)#{PATTERN::X_ABS_URI}/xn
|
|
end
|
|
end
|
|
|
|
end
|
|
|
|
module Kernel
|
|
# alias for URI.parse.
|
|
#
|
|
# This method is introduced at 1.8.2.
|
|
def URI(uri_str) # :doc:
|
|
URI.parse(uri_str)
|
|
end
|
|
module_function :URI
|
|
end
|