Class: KDL::Types::IRLReference::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/kdl/types/irl/parser.rb

Direct Known Subclasses

KDL::Types::IRL::Parser

Constant Summary collapse

RGX = 
/^(?:(?:([a-z][a-z0-9+.\-]+)):\/\/([^@]+@)?([^\/?#]+)?)?(\/?[^?#]*)?(?:\?([^#]*))?(?:#(.*))?$/i.freeze
PERCENT_RGX = 
/%[a-f0-9]{2}/i.freeze
RESERVED_URL_CHARS = 
%w[! # $ & ' ( ) * + , / : ; = ? @ \[ \] %]
UNRESERVED_URL_CHARS = 
%w[A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
a b c d e f g h i j k l m n o p q r s t u v w x y z
0 1 2 3 4 5 6 7 8 9 - _ . ~].freeze
URL_CHARS = 
RESERVED_URL_CHARS + UNRESERVED_URL_CHARS

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(string) ⇒ Parser 



16
17
18
 
# File 'lib/kdl/types/irl/parser.rb', line 16

def initialize(string)
  @string = string
end

Class Method Details

.build_uri_string(scheme, auth, domain, path, search, hash) ⇒ Object 



100
101
102
103
104
105
106
107
108
109
 
# File 'lib/kdl/types/irl/parser.rb', line 100

def self.build_uri_string(scheme, auth, domain, path, search, hash)
  string = +''
  string << "#{scheme}://" if scheme
  string << auth if auth
  string << domain if domain
  string << path if path
  string << "?#{search}" if search
  string << "##{hash}" if hash
  string
end

.decode(string) ⇒ Object 



83
84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/kdl/types/irl/parser.rb', line 83

def self.decode(string)
  return string unless string

  string.gsub(PERCENT_RGX) do |match|
    char = match[1, 2].to_i(16).chr
    if RESERVED_URL_CHARS.include?(char)
      match
    else
      char
    end
  end.force_encoding('utf-8')
end

.encode(string) ⇒ Object 



74
75
76
77
78
79
80
81
 
# File 'lib/kdl/types/irl/parser.rb', line 74

def self.encode(string)
  return string unless string

  string.chars
        .map { |c| c.ascii_only? ? c : percent_encode(c) }
        .join
        .force_encoding('utf-8')
end

.percent_encode(c) ⇒ Object 



96
97
98
 
# File 'lib/kdl/types/irl/parser.rb', line 96

def self.percent_encode(c)
  c.bytes.map { |b| "%#{b.to_s(16)}" }.join.upcase
end

.valid_url_part?(string) ⇒ Boolean 



66
67
68
69
70
71
72
 
# File 'lib/kdl/types/irl/parser.rb', line 66

def self.valid_url_part?(string)
  return true unless string

  string.chars.all? do |char|
    !char.ascii_only? || URL_CHARS.include?(char)
  end
end

Instance Method Details

#parse ⇒ Object 



20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/kdl/types/irl/parser.rb', line 20

def parse
  scheme, auth, domain, path, search, hash = *parse_url

  if @string.ascii_only?
    unicode_path = Parser.decode(path)
    unicode_search = Parser.decode(search)
    unicode_hash = Parser.decode(hash)
  else
    unicode_path = path
    path = Parser.encode(unicode_path)
    unicode_search = search
    search_params = unicode_search ? unicode_search.split('&').map { |x| x.split('=') } : nil
    search = search_params ? search_params.map { |k, v| "#{Parser.encode(k)}=#{Parser.encode(v)}" }.join('&') : nil
    unicode_hash = hash
    hash = Parser.encode(hash)
  end

  if domain
    validator = IDNHostname::Validator.new(domain)
    domain = validator.ascii
    unicode_domain = validator.unicode
  else
    unicode_domain = domain
  end

  unicode_value = Parser.build_uri_string(scheme, auth, unicode_domain, unicode_path, unicode_search, unicode_hash)
  ascii_value = Parser.build_uri_string(scheme, auth, domain, path, search, hash)

  [ascii_value,
   { unicode_value: unicode_value,
     unicode_domain: unicode_domain,
     unicode_path: unicode_path,
     unicode_search: unicode_search,
     unicode_hash: unicode_hash }]
end

#parse_url ⇒ Object

Raises:

  • (ArgumentError) 


56
57
58
59
60
61
62
63
64
 
# File 'lib/kdl/types/irl/parser.rb', line 56

def parse_url
  match = RGX.match(@string)
  raise ArgumentError, "invalid IRL `#{@string}'" if match.nil?

  _, *parts = *match
  raise ArgumentError, "invalid IRL `#{@string}'" unless parts.all? { |part| Parser.valid_url_part?(part) }

  parts
end