class URI

Overview

This class represents a URI reference as defined by [RFC 3986: Uniform Resource Identifier (URI): Generic Syntax](https://www.ietf.org/rfc/rfc3986.txt).

This class provides constructors for creating URI instances from their components or by parsing their string forms and methods for accessing the various components of an instance.

Basic example:

require "uri"

uri = URI.parse "http://foo.com/posts?id=30&limit=5#time=1305298413"
# => #<URI:0x1003f1e40 @scheme="http", @host="foo.com", @port=nil, @path="/posts", @query="id=30&limit=5", ... >
uri.scheme
# => "http"
uri.host
# => "foo.com"
uri.query
# => "id=30&limit=5"
uri.to_s
# => "http://foo.com/posts?id=30&limit=5#time=1305298413"

Defined in:

uri/uri_parser.cr
uri.cr

Class Method Summary

Instance Method Summary

Instance methods inherited from class Reference

==(other)
==(other : self)
==
, dup dup, hash hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, same?(other : Reference)
same?(other : Nil)
same?
, to_s(io : IO) : Nil to_s

Instance methods inherited from class Object

!=(other) !=, !~(other) !~, ==(other) ==, ===(other)
===(other : YAML::Any)
===(other : JSON::Any)
===
, =~(other) =~, class class, crystal_type_id crystal_type_id, dup dup, hash hash, inspect(io : IO)
inspect
inspect
, itself itself, not_nil! not_nil!, tap(&block) tap, to_json to_json, to_pretty_json(indent : String = " ")
to_pretty_json(io : IO, indent : String = " ")
to_pretty_json
, to_s
to_s(io : IO)
to_s
, to_yaml
to_yaml(io : IO)
to_yaml
, try(&block) try

Class methods inherited from class Object

==(other : Class) ==, ===(other) ===, cast(other) : self cast, clone clone, dup dup, from_json(string_or_io) : self
from_json(string_or_io, root : String) : self
from_json
, from_yaml(string : String) : self from_yaml, hash hash, inspect(io) inspect, name : String name, nilable? nilable?, to_s(io) to_s, |(other : U.class) forall U |

Class Method Detail

def self.escape(string : String, space_to_plus = false) : String #

URL-encode a string.

If space_to_plus is true, it replace space character (0x20) to '+' and '+' is encoded to '%2B'. e.g. application/x-www-form-urlencoded want this replace.

URI.escape("'Stop!' said Fred")                      #=> "%27Stop%21%27%20said%20Fred"
URI.escape("'Stop!' said Fred", space_to_plus: true) #=> "%27Stop%21%27+said+Fred"

[View source]
def self.escape(string : String, io : IO, space_to_plus = false) #

URL-encode a string and write the result to an IO.


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def self.escape(string : String, space_to_plus = false, &block) : String #

URL-encode a string.

This method requires block, the block is called with each characters whose code is less than 0x80. The characters that block returns true are not escaped, other characters are escaped.

# Escape URI path
URI.escape("/foo/file?(1).txt") do |byte|
  URI.unreserved?(byte) || byte.chr == '/'
end
#=> "/foo/file%3F%281%29.txt"

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def self.escape(string : String, io : IO, space_to_plus = false, &block) #

URL-encode a string and write the result to an IO.

This method requires block.


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def self.new(scheme = nil, host = nil, port = nil, path = nil, query = nil, user = nil, password = nil, fragment = nil, opaque = nil) #

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def self.parse(raw_url : String) : URI #

Parses raw_url into an URI. The raw_url may be relative or absolute.

require 

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def self.reserved?(byte) : Bool #

Returns whether given byte is reserved character defined in RFC 3986.

Reserved characters are ':', '/', '?', '#', '[', ']', '@', '!', '$', '&', "'", '(', ')', '*', '+', ',', ';' and '='.


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def self.unescape(string : String, io : IO, plus_to_space = false, &block) #

URL-decode a string and write the result to an IO.

This method requires block.


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def self.unescape(string : String, plus_to_space = false, &block) : String #

URL-decode a string.

This method requires block, the block is called with each bytes whose is less than 0x80. The bytes that block returns true are not unescaped, other characters are unescaped.


[View source]
def self.unescape(string : String, plus_to_space = false) : String #

URL-decode a string.

If plus_to_space is true, it replace plus character (0x2B) to ' '. e.g. application/x-www-form-urlencoded wants this replace.

URI.unescape("%27Stop%21%27%20said%20Fred")                  #=> "'Stop!' said Fred"
URI.unescape("%27Stop%21%27+said+Fred", plus_to_space: true) #=> "'Stop!' said Fred"

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def self.unescape(string : String, io : IO, plus_to_space = false) #

URL-decode a string and write the result to an IO.


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def self.unescape_one(string, bytesize, i, byte, char, io, plus_to_space = false, &block) #

:nodoc: Unescapes one character. Private API


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def self.unreserved?(byte) : Bool #

Returns whether given byte is unreserved character defined in RFC 3986.

Unreserved characters are alphabet, digit, '_', '.', '-', '~'.


[View source]

Instance Method Detail

def ==(other : self) #

def fragment : String | Nil #

Returns the fragment component of the URI.

URI.parse("http://foo.com/bar#section1").fragment # => "section1"

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def fragment=(fragment : String | Nil) #

Sets the fragment component of the URI.


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def full_path #

Returns the full path of this URI.

uri = URI.parse "http://foo.com/posts?id=30&limit=5#time=1305298413"
uri.full_path # => "/posts?id=30&limit=5"

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def hash #

def host : String | Nil #

Returns the host component of the URI.

URI.parse("http://foo.com").host # => "foo.com"

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def host=(host : String | Nil) #

Sets the host component of the URI.


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def opaque : String | Nil #

Returns the opaque component of the URI.

URI.parse("mailto:alice@example.com").opaque # => "alice@example.com"

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def opaque=(opaque : String | Nil) #

Sets the opaque component of the URI.


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def password : String | Nil #

Returns the password component of the URI.

URI.parse("http://admin:password@foo.com").password # => "password"

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def password=(password : String | Nil) #

Sets the password component of the URI.


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def path : String | Nil #

Returns the path component of the URI.

URI.parse("http://foo.com/bar").path # => "/bar"

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def path=(path : String | Nil) #

Sets the path component of the URI.


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def port : Int32 | Nil #

Returns the port component of the URI.

URI.parse("http://foo.com:5432").port # => 5432

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def port=(port : Int32 | Nil) #

Sets the port component of the URI.


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def query : String | Nil #

Returns the query component of the URI.

URI.parse("http://foo.com/bar?q=1").query # => "q=1"

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def query=(query : String | Nil) #

Sets the query component of the URI.


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def scheme : String | Nil #

Returns the scheme component of the URI.

URI.parse("http://foo.com").scheme           # => "http"
URI.parse("mailto:alice@example.com").scheme # => "mailto"

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def scheme=(scheme : String | Nil) #

Sets the scheme component of the URI.


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def to_s(io : IO) #

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def user : String | Nil #

Returns the user component of the URI.

URI.parse("http://admin:password@foo.com").user # => "admin"

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def user=(user : String | Nil) #

Sets the user component of the URI.


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def userinfo #

Returns the user-information component containing the provided username and password.

uri = URI.parse "http://admin:password@foo.com"
uri.userinfo # => "admin:password"

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