class URI::Generic

Base class for all URI classes. Implements generic URI syntax as per RFC 2396.

Constants

COMPONENT

An Array of the available components for URI::Generic.

DEFAULT_PORT

A Default port of nil for URI::Generic.

Attributes

fragment[R]

Returns the fragment component of the URI.

URI("http://foo/bar/baz?search=FooBar#ponies").fragment #=> "ponies"
host[R]

Returns the host component of the URI.

URI("http://foo/bar/baz").host #=> "foo"

It returns nil if no host component exists.

URI("mailto:foo@example.org").host #=> nil

The component does not contain the port number.

URI("http://foo:8080/bar/baz").host #=> "foo"

Since IPv6 addresses are wrapped with brackets in URIs, this method returns IPv6 addresses wrapped with brackets. This form is not appropriate to pass to socket methods such as TCPSocket.open. If unwrapped host names are required, use the hostname method.

URI("http://[::1]/bar/baz").host     #=> "[::1]"
URI("http://[::1]/bar/baz").hostname #=> "::1"
opaque[R]

Returns the opaque part of the URI.

URI("mailto:foo@example.org").opaque #=> "foo@example.org"
URI("http://foo/bar/baz").opaque     #=> nil

The portion of the path that does not make use of the slash ‘/’. The path typically refers to an absolute path or an opaque part. (See RFC2396 Section 3 and 5.2.)

path[R]

Returns the path component of the URI.

URI("http://foo/bar/baz").path #=> "/bar/baz"
port[R]

Returns the port component of the URI.

URI("http://foo/bar/baz").port      #=> 80
URI("http://foo:8080/bar/baz").port #=> 8080
query[R]

Returns the query component of the URI.

URI("http://foo/bar/baz?search=FooBar").query #=> "search=FooBar"
scheme[R]

Returns the scheme component of the URI.

URI("http://foo/bar/baz").scheme #=> "http"

Public Class Methods

build(args) click to toggle source

Synopsis

See ::new.

Description

Creates a new URI::Generic instance from components of URI::Generic with check. Components are: scheme, userinfo, host, port, registry, path, opaque, query, and fragment. You can provide arguments either by an Array or a Hash. See ::new for hash keys to use or for order of array items.

# File uri/generic.rb, line 116
def self.build(args)
  if args.kind_of?(Array) &&
      args.size == ::URI::Generic::COMPONENT.size
    tmp = args.dup
  elsif args.kind_of?(Hash)
    tmp = ::URI::Generic::COMPONENT.collect do |c|
      if args.include?(c)
        args[c]
      else
        nil
      end
    end
  else
    component = self.class.component rescue ::URI::Generic::COMPONENT
    raise ArgumentError,
    "expected Array of or Hash of components of #{self.class} (#{component.join(', ')})"
  end

  tmp << nil
  tmp << true
  return self.new(*tmp)
end
build2(args) click to toggle source

Synopsis

See ::new.

Description

At first, tries to create a new URI::Generic instance using URI::Generic::build. But, if exception URI::InvalidComponentError is raised, then it does URI::Escape.escape all URI components and tries again.

# File uri/generic.rb, line 78
def self.build2(args)
  begin
    return self.build(args)
  rescue InvalidComponentError
    if args.kind_of?(Array)
      return self.build(args.collect{|x|
        if x.is_a?(String)
          DEFAULT_PARSER.escape(x)
        else
          x
        end
      })
    elsif args.kind_of?(Hash)
      tmp = {}
      args.each do |key, value|
        tmp[key] = if value
            DEFAULT_PARSER.escape(value)
          else
            value
          end
      end
      return self.build(tmp)
    end
  end
end
component() click to toggle source

Components of the URI in the order.

# File uri/generic.rb, line 57
def self.component
  self::COMPONENT
end
default_port() click to toggle source

Returns default port.

# File uri/generic.rb, line 32
def self.default_port
  self::DEFAULT_PORT
end
new(scheme, userinfo, host, port, registry, path, opaque, query, fragment, parser = DEFAULT_PARSER, arg_check = false) click to toggle source

Args

scheme

Protocol scheme, i.e. ‘http’,‘ftp’,‘mailto’ and so on.

userinfo

User name and password, i.e. ‘sdmitry:bla’.

host

Server host name.

port

Server port.

registry

Registry of naming authorities.

path

Path on server.

opaque

Opaque part.

query

Query data.

fragment

Part of the URI after ‘#’ character.

parser

Parser for internal use [URI::DEFAULT_PARSER by default].

arg_check

Check arguments [false by default].

Description

Creates a new URI::Generic instance from “generic” components without check.

# File uri/generic.rb, line 169
def initialize(scheme,
               userinfo, host, port, registry,
               path, opaque,
               query,
               fragment,
               parser = DEFAULT_PARSER,
               arg_check = false)
  @scheme = nil
  @user = nil
  @password = nil
  @host = nil
  @port = nil
  @path = nil
  @query = nil
  @opaque = nil
  @fragment = nil
  @parser = parser == DEFAULT_PARSER ? nil : parser

  if arg_check
    self.scheme = scheme
    self.userinfo = userinfo
    self.hostname = host
    self.port = port
    self.path = path
    self.query = query
    self.opaque = opaque
    self.fragment = fragment
  else
    self.set_scheme(scheme)
    self.set_userinfo(userinfo)
    self.set_host(host)
    self.set_port(port)
    self.set_path(path)
    self.query = query
    self.set_opaque(opaque)
    self.fragment=(fragment)
  end
  if registry
    raise InvalidURIError,
      "the scheme #{@scheme} does not accept registry part: #{registry} (or bad hostname?)"
  end

  @scheme&.freeze
  self.set_path('') if !@path && !@opaque # (see RFC2396 Section 5.2)
  self.set_port(self.default_port) if self.default_port && !@port
end

Public Instance Methods

+(oth)
Alias for: merge
-(oth)
Alias for: route_from
==(oth) click to toggle source

Compares two URIs.

# File uri/generic.rb, line 1373
def ==(oth)
  if self.class == oth.class
    self.normalize.component_ary == oth.normalize.component_ary
  else
    false
  end
end
absolute()
Alias for: absolute?
absolute?() click to toggle source

Returns true if URI has a scheme (e.g. http:// or https://) specified.

# File uri/generic.rb, line 962
def absolute?
  if @scheme
    true
  else
    false
  end
end
Also aliased as: absolute
coerce(oth) click to toggle source

Args

v

URI or String

Description

Attempts to parse other URI oth, returns [parsed_oth, self].

Usage

require 'uri'

uri = URI.parse("http://my.example.com")
uri.coerce("http://foo.com")
#=> [#<URI::HTTP http://foo.com>, #<URI::HTTP http://my.example.com>]
Calls superclass method
# File uri/generic.rb, line 1463
def coerce(oth)
  case oth
  when String
    oth = parser.parse(oth)
  else
    super
  end

  return oth, self
end
component() click to toggle source

Components of the URI in the order.

# File uri/generic.rb, line 313
def component
  self.class.component
end
default_port() click to toggle source

Returns default port.

# File uri/generic.rb, line 39
def default_port
  self.class.default_port
end
eql?(oth) click to toggle source
# File uri/generic.rb, line 1385
def eql?(oth)
  self.class == oth.class &&
  parser == oth.parser &&
  self.component_ary.eql?(oth.component_ary)
end
find_proxy(env=ENV) click to toggle source

Returns a proxy URI. The proxy URI is obtained from environment variables such as http_proxy, ftp_proxy, no_proxy, etc. If there is no proper proxy, nil is returned.

If the optional parameter env is specified, it is used instead of ENV.

Note that capitalized variables (HTTP_PROXY, FTP_PROXY, NO_PROXY, etc.) are examined, too.

But http_proxy and HTTP_PROXY is treated specially under CGI environment. It’s because HTTP_PROXY may be set by Proxy: header. So HTTP_PROXY is not used. http_proxy is not used too if the variable is case insensitive. CGI_HTTP_PROXY can be used instead.

# File uri/generic.rb, line 1489
def find_proxy(env=ENV)
  raise BadURIError, "relative URI: #{self}" if self.relative?
  name = self.scheme.downcase + '_proxy'
  proxy_uri = nil
  if name == 'http_proxy' && env.include?('REQUEST_METHOD') # CGI?
    # HTTP_PROXY conflicts with *_proxy for proxy settings and
    # HTTP_* for header information in CGI.
    # So it should be careful to use it.
    pairs = env.reject {|k, v| /\Ahttp_proxy\z/i !~ k }
    case pairs.length
    when 0 # no proxy setting anyway.
      proxy_uri = nil
    when 1
      k, _ = pairs.shift
      if k == 'http_proxy' && env[k.upcase] == nil
        # http_proxy is safe to use because ENV is case sensitive.
        proxy_uri = env[name]
      else
        proxy_uri = nil
      end
    else # http_proxy is safe to use because ENV is case sensitive.
      proxy_uri = env.to_hash[name]
    end
    if !proxy_uri
      # Use CGI_HTTP_PROXY.  cf. libwww-perl.
      proxy_uri = env["CGI_#{name.upcase}"]
    end
  elsif name == 'http_proxy'
    unless proxy_uri = env[name]
      if proxy_uri = env[name.upcase]
        warn 'The environment variable HTTP_PROXY is discouraged.  Use http_proxy.', uplevel: 1
      end
    end
  else
    proxy_uri = env[name] || env[name.upcase]
  end

  if proxy_uri.nil? || proxy_uri.empty?
    return nil
  end

  if self.hostname
    begin
      addr = IPSocket.getaddress(self.hostname)
      return nil if /\A127\.|\A::1\z/ =~ addr
    rescue SocketError
    end
  end

  name = 'no_proxy'
  if no_proxy = env[name] || env[name.upcase]
    return nil unless URI::Generic.use_proxy?(self.hostname, addr, self.port, no_proxy)
  end
  URI.parse(proxy_uri)
end
fragment=(v) click to toggle source

Checks the fragment v component against the URI::Parser Regexp for :FRAGMENT.

Args

v

String

Description

Public setter for the fragment component v (with validation).

Usage

require 'uri'

uri = URI.parse("http://my.example.com/?id=25#time=1305212049")
uri.fragment = "time=1305212086"
uri.to_s  #=> "http://my.example.com/?id=25#time=1305212086"
# File uri/generic.rb, line 919
def fragment=(v)
  return @fragment = nil unless v

  x = v.to_str
  v = x.dup if x.equal? v
  v.encode!(Encoding::UTF_8) rescue nil
  v.delete!("\t\r\n")
  v.force_encoding(Encoding::ASCII_8BIT)
  v.gsub!(/(?!%\h\h|[!-~])./n){'%%%02X' % $&.ord}
  v.force_encoding(Encoding::US_ASCII)
  @fragment = v
end
hash() click to toggle source
# File uri/generic.rb, line 1381
def hash
  self.component_ary.hash
end
hierarchical?() click to toggle source

Returns true if URI is hierarchical.

Description

URI has components listed in order of decreasing significance from left to right, see RFC3986 tools.ietf.org/html/rfc3986 1.2.3.

Usage

require 'uri'

uri = URI.parse("http://my.example.com/")
uri.hierarchical?
#=> true
uri = URI.parse("mailto:joe@example.com")
uri.hierarchical?
#=> false
# File uri/generic.rb, line 951
def hierarchical?
  if @path
    true
  else
    false
  end
end
host=(v) click to toggle source

Args

v

String

Description

Public setter for the host component v (with validation).

See also URI::Generic.check_host.

Usage

require 'uri'

uri = URI.parse("http://my.example.com")
uri.host = "foo.com"
uri.to_s  #=> "http://foo.com"
# File uri/generic.rb, line 629
def host=(v)
  check_host(v)
  set_host(v)
  v
end
hostname() click to toggle source

Extract the host part of the URI and unwrap brackets for IPv6 addresses.

This method is the same as URI::Generic#host except brackets for IPv6 (and future IP) addresses are removed.

uri = URI("http://[::1]/bar")
uri.hostname      #=> "::1"
uri.host          #=> "[::1]"
# File uri/generic.rb, line 644
def hostname
  v = self.host
  /\A\[(.*)\]\z/ =~ v ? $1 : v
end
hostname=(v) click to toggle source

Sets the host part of the URI as the argument with brackets for IPv6 addresses.

This method is the same as URI::Generic#host= except the argument can be a bare IPv6 address.

uri = URI("http://foo/bar")
uri.hostname = "::1"
uri.to_s  #=> "http://[::1]/bar"

If the argument seems to be an IPv6 address, it is wrapped with brackets.

# File uri/generic.rb, line 661
def hostname=(v)
  v = "[#{v}]" if /\A\[.*\]\z/ !~ v && /:/ =~ v
  self.host = v
end
inspect() click to toggle source
# File uri/generic.rb, line 1440
def inspect
  "#<#{self.class} #{self}>"
end
merge(oth) click to toggle source

Args

oth

URI or String

Description

Merges two URIs.

Usage

require 'uri'

uri = URI.parse("http://my.example.com")
uri.merge("/main.rbx?page=1")
# => "http://my.example.com/main.rbx?page=1"
# File uri/generic.rb, line 1099
def merge(oth)
  rel = parser.__send__(:convert_to_uri, oth)

  if rel.absolute?
    #raise BadURIError, "both URI are absolute" if absolute?
    # hmm... should return oth for usability?
    return rel
  end

  unless self.absolute?
    raise BadURIError, "both URI are relative"
  end

  base = self.dup

  authority = rel.userinfo || rel.host || rel.port

  # RFC2396, Section 5.2, 2)
  if (rel.path.nil? || rel.path.empty?) && !authority && !rel.query
    base.fragment=(rel.fragment) if rel.fragment
    return base
  end

  base.query = nil
  base.fragment=(nil)

  # RFC2396, Section 5.2, 4)
  if !authority
    base.set_path(merge_path(base.path, rel.path)) if base.path && rel.path
  else
    # RFC2396, Section 5.2, 4)
    base.set_path(rel.path) if rel.path
  end

  # RFC2396, Section 5.2, 7)
  base.set_userinfo(rel.userinfo) if rel.userinfo
  base.set_host(rel.host)         if rel.host
  base.set_port(rel.port)         if rel.port
  base.query = rel.query       if rel.query
  base.fragment=(rel.fragment) if rel.fragment

  return base
end
Also aliased as: +
merge!(oth) click to toggle source

Args

oth

URI or String

Description

Destructive form of merge.

Usage

require 'uri'

uri = URI.parse("http://my.example.com")
uri.merge!("/main.rbx?page=1")
uri.to_s  # => "http://my.example.com/main.rbx?page=1"
# File uri/generic.rb, line 1071
def merge!(oth)
  t = merge(oth)
  if self == t
    nil
  else
    replace!(t)
    self
  end
end
normalize() click to toggle source

Returns normalized URI.

require 'uri'

URI("HTTP://my.EXAMPLE.com").normalize
#=> #<URI::HTTP http://my.example.com/>

Normalization here means:

  • scheme and host are converted to lowercase,

  • an empty path component is set to “/”.

# File uri/generic.rb, line 1309
def normalize
  uri = dup
  uri.normalize!
  uri
end
normalize!() click to toggle source

Destructive version of normalize.

# File uri/generic.rb, line 1318
def normalize!
  if path&.empty?
    set_path('/')
  end
  if scheme && scheme != scheme.downcase
    set_scheme(self.scheme.downcase)
  end
  if host && host != host.downcase
    set_host(self.host.downcase)
  end
end
opaque=(v) click to toggle source

Args

v

String

Description

Public setter for the opaque component v (with validation).

See also URI::Generic.check_opaque.

# File uri/generic.rb, line 891
def opaque=(v)
  check_opaque(v)
  set_opaque(v)
  v
end
parser() click to toggle source

Returns the parser to be used.

Unless a URI::Parser is defined, DEFAULT_PARSER is used.

# File uri/generic.rb, line 289
def parser
  if !defined?(@parser) || !@parser
    DEFAULT_PARSER
  else
    @parser || DEFAULT_PARSER
  end
end
password() click to toggle source

Returns the password component.

# File uri/generic.rb, line 573
def password
  @password
end
password=(password) click to toggle source

Args

v

String

Description

Public setter for the password component (with validation).

See also URI::Generic.check_password.

Usage

require 'uri'

uri = URI.parse("http://john:S3nsit1ve@my.example.com")
uri.password = "V3ry_S3nsit1ve"
uri.to_s  #=> "http://john:V3ry_S3nsit1ve@my.example.com"
# File uri/generic.rb, line 498
def password=(password)
  check_password(password)
  set_password(password)
  # returns password
end
path=(v) click to toggle source

Args

v

String

Description

Public setter for the path component v (with validation).

See also URI::Generic.check_path.

Usage

require 'uri'

uri = URI.parse("http://my.example.com/pub/files")
uri.path = "/faq/"
uri.to_s  #=> "http://my.example.com/faq/"
# File uri/generic.rb, line 805
def path=(v)
  check_path(v)
  set_path(v)
  v
end
port=(v) click to toggle source

Args

v

String

Description

Public setter for the port component v (with validation).

See also URI::Generic.check_port.

Usage

require 'uri'

uri = URI.parse("http://my.example.com")
uri.port = 8080
uri.to_s  #=> "http://my.example.com:8080"
# File uri/generic.rb, line 719
def port=(v)
  check_port(v)
  set_port(v)
  port
end
query=(v) click to toggle source

Args

v

String

Description

Public setter for the query component v.

Usage

require 'uri'

uri = URI.parse("http://my.example.com/?id=25")
uri.query = "id=1"
uri.to_s  #=> "http://my.example.com/?id=1"
# File uri/generic.rb, line 829
def query=(v)
  return @query = nil unless v
  raise InvalidURIError, "query conflicts with opaque" if @opaque

  x = v.to_str
  v = x.dup if x.equal? v
  v.encode!(Encoding::UTF_8) rescue nil
  v.delete!("\t\r\n")
  v.force_encoding(Encoding::ASCII_8BIT)
  raise InvalidURIError, "invalid percent escape: #{$1}" if /(%\H\H)/n.match(v)
  v.gsub!(/(?!%\h\h|[!$-&(-;=?-_a-~])./n.freeze){'%%%02X' % $&.ord}
  v.force_encoding(Encoding::US_ASCII)
  @query = v
end
registry=(v) click to toggle source
# File uri/generic.rb, line 735
def registry=(v)
  raise InvalidURIError, "can not set registry"
end
relative?() click to toggle source

Returns true if URI does not have a scheme (e.g. http:// or https://) specified.

# File uri/generic.rb, line 974
def relative?
  !absolute?
end
route_from(oth) click to toggle source

Args

oth

URI or String

Description

Calculates relative path from oth to self.

Usage

require 'uri'

uri = URI.parse('http://my.example.com/main.rbx?page=1')
uri.route_from('http://my.example.com')
#=> #<URI::Generic /main.rbx?page=1>
# File uri/generic.rb, line 1252
def route_from(oth)
  # you can modify `rel', but can not `oth'.
  begin
    oth, rel = route_from0(oth)
  rescue
    raise $!.class, $!.message
  end
  if oth == rel
    return rel
  end

  rel.set_path(route_from_path(oth.path, self.path))
  if rel.path == './' && self.query
    # "./?foo" -> "?foo"
    rel.set_path('')
  end

  return rel
end
Also aliased as: -
route_to(oth) click to toggle source

Args

oth

URI or String

Description

Calculates relative path to oth from self.

Usage

require 'uri'

uri = URI.parse('http://my.example.com')
uri.route_to('http://my.example.com/main.rbx?page=1')
#=> #<URI::Generic /main.rbx?page=1>
# File uri/generic.rb, line 1292
def route_to(oth)
  parser.__send__(:convert_to_uri, oth).route_from(self)
end
scheme=(v) click to toggle source

Args

v

String

Description

Public setter for the scheme component v (with validation).

See also URI::Generic.check_scheme.

Usage

require 'uri'

uri = URI.parse("http://my.example.com")
uri.scheme = "https"
uri.to_s  #=> "https://my.example.com"
# File uri/generic.rb, line 360
def scheme=(v)
  check_scheme(v)
  set_scheme(v)
  v
end
select(*components) click to toggle source

Args

components

Multiple Symbol arguments defined in URI::HTTP.

Description

Selects specified components from URI.

Usage

require 'uri'

uri = URI.parse('http://myuser:mypass@my.example.com/test.rbx')
uri.select(:userinfo, :host, :path)
# => ["myuser:mypass", "my.example.com", "/test.rbx"]
# File uri/generic.rb, line 1429
def select(*components)
  components.collect do |c|
    if component.include?(c)
      self.__send__(c)
    else
      raise ArgumentError,
        "expected of components of #{self.class} (#{self.class.component.join(', ')})"
    end
  end
end
to_s() click to toggle source

Constructs String from URI.

# File uri/generic.rb, line 1333
def to_s
  str = ''.dup
  if @scheme
    str << @scheme
    str << ':'
  end

  if @opaque
    str << @opaque
  else
    if @host || %w[file postgres].include?(@scheme)
      str << '//'
    end
    if self.userinfo
      str << self.userinfo
      str << '@'
    end
    if @host
      str << @host
    end
    if @port && @port != self.default_port
      str << ':'
      str << @port.to_s
    end
    str << @path
    if @query
      str << '?'
      str << @query
    end
  end
  if @fragment
    str << '#'
    str << @fragment
  end
  str
end
user() click to toggle source

Returns the user component.

# File uri/generic.rb, line 568
def user
  @user
end
user=(user) click to toggle source

Args

v

String

Description

Public setter for the user component (with validation).

See also URI::Generic.check_user.

Usage

require 'uri'

uri = URI.parse("http://john:S3nsit1ve@my.example.com")
uri.user = "sam"
uri.to_s  #=> "http://sam:V3ry_S3nsit1ve@my.example.com"
# File uri/generic.rb, line 471
def user=(user)
  check_user(user)
  set_user(user)
  # returns user
end
userinfo() click to toggle source

Returns the userinfo, either as ‘user’ or ‘user:password’.

# File uri/generic.rb, line 557
def userinfo
  if @user.nil?
    nil
  elsif @password.nil?
    @user
  else
    @user + ':' + @password
  end
end
userinfo=(userinfo) click to toggle source

Sets userinfo, argument is string like ‘name:pass’.

# File uri/generic.rb, line 441
def userinfo=(userinfo)
  if userinfo.nil?
    return nil
  end
  check_userinfo(*userinfo)
  set_userinfo(*userinfo)
  # returns userinfo
end

Protected Instance Methods

component_ary() click to toggle source

Returns an Array of the components defined from the COMPONENT Array.

# File uri/generic.rb, line 1405
def component_ary
  component.collect do |x|
    self.__send__(x)
  end
end
set_host(v) click to toggle source

Protected setter for the host component v.

See also URI::Generic.host=.

# File uri/generic.rb, line 603
def set_host(v)
  @host = v
end
set_opaque(v) click to toggle source

Protected setter for the opaque component v.

See also URI::Generic.opaque=.

# File uri/generic.rb, line 873
def set_opaque(v)
  @opaque = v
end
set_password(v) click to toggle source

Protected setter for the password component v.

See also URI::Generic.password=.

# File uri/generic.rb, line 534
def set_password(v)
  @password = v
  # returns v
end
set_path(v) click to toggle source

Protected setter for the path component v.

See also URI::Generic.path=.

# File uri/generic.rb, line 779
def set_path(v)
  @path = v
end
set_port(v) click to toggle source

Protected setter for the port component v.

See also URI::Generic.port=.

# File uri/generic.rb, line 692
def set_port(v)
  v = v.empty? ? nil : v.to_i unless !v || v.kind_of?(Integer)
  @port = v
end
set_scheme(v) click to toggle source

Protected setter for the scheme component v.

See also URI::Generic.scheme=.

# File uri/generic.rb, line 334
def set_scheme(v)
  @scheme = v&.downcase
end
set_user(v) click to toggle source

Protected setter for the user component v.

See also URI::Generic.user=.

# File uri/generic.rb, line 524
def set_user(v)
  set_userinfo(v, @password)
  v
end
set_userinfo(user, password = nil) click to toggle source

Protected setter for the user component, and password if available (with validation).

See also URI::Generic.userinfo=.

# File uri/generic.rb, line 509
def set_userinfo(user, password = nil)
  unless password
    user, password = split_userinfo(user)
  end
  @user     = user
  @password = password if password

  [@user, @password]
end