-
Notifications
You must be signed in to change notification settings - Fork 27
/
reader.rb
116 lines (109 loc) · 3.94 KB
/
reader.rb
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
# -*- encoding: utf-8 -*-
module JSON::LD
##
# A JSON-LD parser in Ruby.
#
# @see https://www.w3.org/TR/json-ld11-api
# @author [Gregg Kellogg](http://greggkellogg.net/)
class Reader < RDF::Reader
include StreamingReader
format Format
##
# JSON-LD Reader options
# @see https://ruby-rdf.github.io/rdf/RDF/Reader#options-class_method
def self.options
super + [
RDF::CLI::Option.new(
symbol: :expandContext,
control: :url2,
datatype: RDF::URI,
on: ["--expand-context CONTEXT"],
description: "Context to use when expanding.") {|arg| RDF::URI(arg).absolute? ? RDF::URI(arg) : StringIO.new(File.read(arg))},
RDF::CLI::Option.new(
symbol: :extractAllScripts,
datatype: TrueClass,
default: false,
control: :checkbox,
on: ["--[no-]extract-all-scripts"],
description: "If set to true, when extracting JSON-LD script elements from HTML, unless a specific fragment identifier is targeted, extracts all encountered JSON-LD script elements using an array form, if necessary.") {|arg| RDF::URI(arg)},
RDF::CLI::Option.new(
symbol: :lowercaseLanguage,
datatype: TrueClass,
control: :checkbox,
on: ["--[no-]lowercase-language"],
description: "By default, language tags are left as is. To normalize to lowercase, set this option to `true`."),
RDF::CLI::Option.new(
symbol: :processingMode,
datatype: %w(json-ld-1.0 json-ld-1.1),
control: :radio,
on: ["--processingMode MODE", %w(json-ld-1.0 json-ld-1.1)],
description: "Set Processing Mode (json-ld-1.0 or json-ld-1.1)"),
RDF::CLI::Option.new(
symbol: :rdfDirection,
datatype: %w(i18n-datatype compound-literal),
default: 'null',
control: :select,
on: ["--rdf-direction DIR", %w(i18n-datatype compound-literal)],
description: "How to serialize literal direction (i18n-datatype compound-literal)") {|arg| RDF::URI(arg)},
RDF::CLI::Option.new(
symbol: :stream,
datatype: TrueClass,
control: :checkbox,
on: ["--[no-]stream"],
description: "Optimize for streaming JSON-LD to RDF.") {|arg| arg},
]
end
##
# Initializes the JSON-LD reader instance.
#
# @param [IO, File, String] input
# @param [Hash{Symbol => Object}] options
# any additional options (see `RDF::Reader#initialize` and {JSON::LD::API.initialize})
# @yield [reader] `self`
# @yieldparam [RDF::Reader] reader
# @yieldreturn [void] ignored
# @raise [RDF::ReaderError] if the JSON document cannot be loaded
def initialize(input = $stdin, **options, &block)
options[:base_uri] ||= options[:base]
options[:rename_bnodes] = false unless options.key?(:rename_bnodes)
super do
@options[:base] ||= base_uri.to_s if base_uri
# Trim non-JSON stuff in script.
@doc = if input.respond_to?(:read)
input
else
StringIO.new(input.to_s.sub(%r(\A[^{\[]*)m, '').sub(%r([^}\]]*\Z)m, ''))
end
if block_given?
case block.arity
when 0 then instance_eval(&block)
else block.call(self)
end
end
end
end
##
# @private
# @see RDF::Reader#each_statement
def each_statement(&block)
if @options[:stream]
stream_statement(&block)
else
API.toRdf(@doc, **@options, &block)
end
rescue ::JSON::ParserError, ::JSON::LD::JsonLdError => e
log_fatal("Failed to parse input document: #{e.message}", exception: RDF::ReaderError)
end
##
# @private
# @see RDF::Reader#each_triple
def each_triple(&block)
if block_given?
each_statement do |statement|
yield(*statement.to_triple)
end
end
enum_for(:each_triple)
end
end
end