Class: JSON::LD::Reader
- Inherits:
-
RDF::Reader
- Object
- RDF::Reader
- JSON::LD::Reader
- Includes:
- StreamingReader
- Defined in:
- lib/json/ld/reader.rb
Overview
A JSON-LD parser in Ruby.
Instance Attribute Summary
Attributes included from StreamingReader
Class Method Summary collapse
-
.options ⇒ Object
JSON-LD Reader options.
Instance Method Summary collapse
- #each_statement(&block) ⇒ Object
- #each_triple(&block) ⇒ Object
-
#initialize(input = $stdin, **options) {|reader| ... } ⇒ Reader
constructor
Initializes the RDF/JSON reader instance.
Methods included from StreamingReader
Methods included from ToRDF
#item_to_rdf, #node, #parse_list
Methods included from Utils
#add_value, #as_array, #as_resource, #blank_node?, #compare_values, #graph?, #has_value?, #index?, #list?, #node?, #node_or_ref?, #node_reference?, #property?, #simple_graph?, #value?
Constructor Details
#initialize(input = $stdin, **options) {|reader| ... } ⇒ Reader
Initializes the RDF/JSON reader instance.
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# File 'lib/json/ld/reader.rb', line 69 def initialize(input = $stdin, **, &block) [:base_uri] ||= [:base] [:rename_bnodes] = false unless .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 |
Class Method Details
.options ⇒ Object
JSON-LD Reader options
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# File 'lib/json/ld/reader.rb', line 16 def self. 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 |
Instance Method Details
#each_statement(&block) ⇒ Object
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# File 'lib/json/ld/reader.rb', line 93 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.}", exception: RDF::ReaderError) end |
#each_triple(&block) ⇒ Object
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# File 'lib/json/ld/reader.rb', line 106 def each_triple(&block) if block_given? each_statement do |statement| yield(*statement.to_triple) end end enum_for(:each_triple) end |