Class: TTL2HTML::App

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/ttl2html.rb

Instance Method Summary collapse

Methods included from Util

#uri_mapping_to_path

Constructor Details

#initialize(config = "config.yml") ⇒ App

Returns a new instance of App.



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# File 'lib/ttl2html.rb', line 18

def initialize(config = "config.yml")
  @config = load_config(config)
  if not @config[:base_uri]
    raise "load_config: base_uri not found"
  end
  @data = {}
  @data_inverse = {}
  @prefix = {}
end

Instance Method Details

#build_breadcrumbs(uri, template, depth = 0) ⇒ Object 



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# File 'lib/ttl2html.rb', line 270

def build_breadcrumbs(uri, template, depth = 0)
  results = []
  data = @data[uri]
  if @config[:breadcrumbs]
    if depth == 0
      first_label = template.get_title(data)
      first_label = data[@config[:breadcrumbs].first["label"]].first if @config[:breadcrumbs].first["label"] and data[@config[:breadcrumbs].first["label"]]
      results << { label: first_label }
    end
    @config[:breadcrumbs].each do |e|
      data_target = data
      data_target = @data_inverse[uri] if e["inverse"]
      if data_target
        if e["property"].kind_of? Array
          parent = nil
          data_target_sub = data_target
          e["property"].each do |prop|
            if data_target_sub[prop["property"]]
              data_target_sub[prop["property"]].each do |o|
                parent = o
                data_target_sub = @data[parent]
              end
            end
          end
          if parent
            results << build_breadcrumbs_sub(parent, template)
            results += build_breadcrumbs(parent, template, depth + 1)
            return results
          end
        elsif data_target[e["property"]]
          data_target[e["property"]].each do |parent|
            results << build_breadcrumbs_sub(parent, template, e["label"])
            results += build_breadcrumbs(parent, template, depth + 1)
            return results
          end
        end
      end
    end
  end
  results
end

#build_breadcrumbs_sub(parent, template, label_prop = nil) ⇒ Object 



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# File 'lib/ttl2html.rb', line 311

def build_breadcrumbs_sub(parent, template, label_prop = nil)
  data_parent = @data[parent]
  label = template.get_title(data_parent)
  label = data_parent[label_prop].first if label_prop and data_parent[label_prop]
  {
    uri: parent,
    label: label,
  }
end

#cleanup ⇒ Object 



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# File 'lib/ttl2html.rb', line 497

def cleanup
  @data.select do |uri, v|
    uri.start_with? @config[:base_uri]
  end.sort_by do |uri, v|
    -(uri.size)
  end.each do |uri, v|
    html_file = uri_mapping_to_path(uri, @config, ".html")
    html_file = File.join(@config[:output_dir], html_file) if @config[:output_dir]
    File.unlink html_file if File.exist? html_file
    ttl_file = uri_mapping_to_path(uri, @config, ".ttl")
    ttl_file = File.join(@config[:output_dir], ttl_file) if @config[:output_dir]
    File.unlink ttl_file if File.exist? ttl_file
    dir = uri.sub(@config[:base_uri], "")
    dir = File.join(@config[:output_dir], dir) if @config[:output_dir]
    Dir.rmdir dir if File.exist? dir
  end
  index_html = "index.html"
  index_html = File.join(@config[:output_dir], "index.html") if @config[:output_dir]
  if @config[:top_class] and File.exist? index_html
    File.unlink index_html
  end
end

#each_data(label = :each_data) ⇒ Object 



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# File 'lib/ttl2html.rb', line 127

def each_data(label = :each_data)
  progressbar_options = {
    title: label.to_s,
    format: "(%t) %a %e %P% Processed: %c from %C"
  }
  data = @data.keys.sort_by do|uri|
    [ uri.count("/"), uri.size, uri ] 
  end.reverse
  Parallel.each(data, progress: progressbar_options) do |uri|
    next if not uri.start_with? @config[:base_uri]
    yield uri, @data[uri]
  end
end

#extract_license(data) ⇒ Object 



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# File 'lib/ttl2html.rb', line 417

def extract_license(data)
  license = {}
  if data["http://purl.org/dc/terms/license"]
    license_data = @data[data["http://purl.org/dc/terms/license"].first]
    if license_data
      license[:url] = license_data["http://www.w3.org/1999/02/22-rdf-syntax-ns#value"]&.first
      license[:icon] = license_data["http://xmlns.com/foaf/0.1/thumbnail"]&.first
      license[:label] = license_data["http://www.w3.org/2000/01/rdf-schema#label"]
    elsif data["http://purl.org/dc/terms/license"].first =~ URI::regexp
      license[:url] = license[:label] = data["http://purl.org/dc/terms/license"].first
    end
  end
  license
end

#extract_toplevel ⇒ Object 



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# File 'lib/ttl2html.rb', line 431

def extract_toplevel
  result = {}
  toplevel = nil
  @data.each do |s, v|
    if @data[s]["http://purl.org/pav/hasCurrentVersion"]
      toplevel = s
    end
  end
  data  = @data[toplevel.to_s]
  if toplevel
    license = extract_license(data)
    if data["http://purl.org/dc/terms/publisher"]
      publisher_data = @data[data["http://purl.org/dc/terms/publisher"].first]
      email = publisher_data["http://xmlns.com/foaf/0.1/mbox"]&.first
      contact = { email: email }
      name = publisher_data["http://xmlns.com/foaf/0.1/name"]
      contact[:name] = name if name
      members = []
      if publisher_data["http://xmlns.com/foaf/0.1/member"]
        publisher_data["http://xmlns.com/foaf/0.1/member"].each do |member|
          member_data = @data[member]
          members << {
            name: member_data["http://xmlns.com/foaf/0.1/name"],
            org: member_data["http://www.w3.org/2006/vcard/ns#organization-name"]
          }
        end
        contact[:members] = members
      end
    end
    if data["http://rdfs.org/ns/void#sparqlEndpoint"]
      endpoint = data["http://rdfs.org/ns/void#sparqlEndpoint"].first
    end
    result = {
      uri: toplevel.to_s,
      description: data["http://purl.org/dc/terms/description"],
      license: license,
      contact: contact,
      endpoint: endpoint,
    }
  end
  result
end

#extract_version_metadata(data) ⇒ Object 



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# File 'lib/ttl2html.rb', line 366

def extract_version_metadata(data)
  description = data["http://purl.org/dc/terms/description"]
  link = nil
  if not description
    qrev = data["http://www.w3.org/ns/prov#qualifiedRevision"]&.first
    if @data[qrev]
      description = @data[qrev]["http://www.w3.org/2000/01/rdf-schema#comment"]
      link = @data[qrev]["http://www.w3.org/2000/01/rdf-schema#seeAlso"]&.first
    end
  end
  subset = []
  if data["http://rdfs.org/ns/void#subset"]
    data["http://rdfs.org/ns/void#subset"].each do |s|
      abort "#{s} not found" if not @data[s]
      subset << extract_version_metadata(@data[s])
    end
  end
  date = data["http://purl.org/pav/createdOn"]&.first
  date = data["http://purl.org/dc/terms/issued"]&.first if date.nil?
  return {
    version: data["http://purl.org/pav/version"]&.first,
    triples: data["http://rdfs.org/ns/void#triples"]&.first,
    datadump: data["http://rdfs.org/ns/void#dataDump"]&.first,
    bytesize: data["http://www.w3.org/ns/dcat#byteSize"]&.first,
    date: date,
    description: description,
    subset: subset,
    link: link,
    license: extract_license(data),
  }
end

#extract_versions ⇒ Object 



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# File 'lib/ttl2html.rb', line 397

def extract_versions
  versions = []
  ["http://purl.org/pav/hasVersion", "http://purl.org/pav/hasCurrentVersion", "http://purl.org/dc/terms/hasVersion"].each do |prop|
    objects = []
    @data.each do |s, v|
      if @data[s][prop]
        objects += @data[s][prop]
      end
    end
    objects.each do |o|
      uri = o.to_s
      version = @data[uri]
      next if not version
      next if not version["http://www.w3.org/1999/02/22-rdf-syntax-ns#type"]
      next if not version["http://www.w3.org/1999/02/22-rdf-syntax-ns#type"].include? "http://rdfs.org/ns/void#Dataset"
      versions << extract_version_metadata(version)
    end
  end
  versions.sort_by{|v| [ v[:date], v[:version] ] }
end

#format_turtle(subject, depth = 1) ⇒ Object 



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# File 'lib/ttl2html.rb', line 75

def format_turtle(subject, depth = 1)
  turtle = RDF::Turtle::Writer.new
  result = ""
  if subject =~ /^_:/
    result << "[\n#{"  "*depth}"
  else
    result << "<#{subject}>\n#{"  "*depth}"
  end
  result << @data[subject.to_s].keys.sort.map do |predicate|
    str = "<#{predicate}> "
    str << @data[subject.to_s][predicate].sort_by do |object|
      if /^_:/ =~ object.to_s and @data[object.to_s]
        qb_order = "http://purl.org/linked-data/cube#order"
        shacl_order = "http://www.w3.org/ns/shacl#order"
        [ @data[object.to_s][qb_order] ? @data[object.to_s][qb_order].first.to_i : Float::INFINITY,
          @data[object.to_s][shacl_order] ? @data[object.to_s][shacl_order].first.to_i : Float::INFINITY,
          format_turtle(object, depth + 1)
        ]
      else
        object.to_s
      end
    end.map do |object|
      if /^_:/ =~ object.to_s # blank node:
        format_turtle(object, depth + 1)
      elsif RDF::URI::IRI =~ object.to_s
        turtle.format_uri(RDF::URI.new object)
      elsif object.respond_to?(:first) and object.first.kind_of?(Symbol)
        turtle.format_literal(RDF::Literal.new(object[1], language: object[0]))
      else
        turtle.format_literal(object)
      end
    end.join(", ")
    str
  end.join(";\n#{"  "*depth}")
  result << " ." if not subject =~ /^_:/
  result << "\n"
  result << "#{"  "*(depth-1)}]" if subject =~ /^_:/
  result
end

#format_turtle_inverse(object) ⇒ Object 



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# File 'lib/ttl2html.rb', line 114

def format_turtle_inverse(object)
  result = ""
  return result if not object.start_with? @config[:base_uri]
  return result if not @data_inverse.has_key? object
  @data_inverse[object].keys.sort.each do |predicate|
    @data_inverse[object.to_s][predicate].sort.each do |subject|
      next if subject =~ /^_:/
      result << "<#{subject}> <#{predicate}> <#{object}>.\n"
    end
  end
  result
end

#load_config(file) ⇒ Object 



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# File 'lib/ttl2html.rb', line 28

def load_config(file)
  config = { output_turtle: true }
  open(file) do |io|
    YAML.safe_load(io, permitted_classes: [Regexp]).each do |k, v|
      config[k.intern] = v
    end
  end
  [ :css_file, :javascript_file ].each do |k|
    if config[k]
      config[k] = [ config[k] ].flatten
    end
  end
  config
end

#load_turtle(file) ⇒ Object 



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# File 'lib/ttl2html.rb', line 43

def load_turtle(file)
  $stderr.puts "loading #{file}..."
  count = 0
  subjects = Set.new
  if file.end_with?(".gz")
    io = Zlib::GzipReader.open(file)
  else
    io = File.open(file)
  end
  RDF::Format.for(:turtle).reader.new(io) do |reader|
    reader.each_statement do |statement|
      s = statement.subject
      v = statement.predicate
      o = statement.object
      count += 1
      subjects << s
      @data[s.to_s] ||= {}
      @data[s.to_s][v.to_s] ||= []
      if o.is_a? RDF::URI or o.is_a? RDF::Node
        @data[s.to_s][v.to_s] << o.to_s
        @data_inverse[o.to_s] ||= {}
        @data_inverse[o.to_s][v.to_s] ||= []
        @data_inverse[o.to_s][v.to_s] << s.to_s
      else
        @data[s.to_s][v.to_s] << o
      end
    end
    @prefix.merge! reader.prefixes
  end
  $stderr.puts "#{count} triples. #{subjects.size} subjects."
  @data
end

#output_files ⇒ Object 



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# File 'lib/ttl2html.rb', line 492

def output_files
  output_html_files
  output_turtle_files if @config[:output_turtle]
end

#output_html_files ⇒ Object 



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# File 'lib/ttl2html.rb', line 140

def output_html_files
  template = Template.new("", @config)
  shapes = []
  @data.each do |s, v|
    if v[RDF.type.to_s] and @data[s][RDF.type.to_s].include?("http://www.w3.org/ns/shacl#NodeShape")
      shapes << s
    end
  end
  labels = shapes2labels(shapes)
  versions = extract_versions
  toplevel = extract_toplevel
  @config[:labels_with_class] ||= {}
  labels.each do |klass, props|
    props.each do |property, label|
      @config[:labels_with_class][klass] ||= {}
      if @config[:labels_with_class][klass][property]
        next
      else
        @config[:labels_with_class][klass][property] = template.get_language_literal(label)
      end
    end
  end
  @config[:orders_with_class] = shapes2orders(shapes)
  Dir.mkdir @config[:output_dir] if @config[:output_dir] and not File.exist? @config[:output_dir]
  each_data(:output_html_files) do |uri, v|
    template = Template.new("default.html.erb", @config)
    param = @config.dup
    param[:uri] = uri
    param[:turtle_uri] = uri + ".ttl"
    param[:data] = v
    param[:data_inverse] = @data_inverse[uri]
    param[:data_inverse_global] = @data_inverse
    param[:data_global] = @data
    param[:title] = template.get_title(v)
    if param[:breadcrumbs]
      param[:breadcrumbs_items] = build_breadcrumbs(uri, template)
    end
    file = uri_mapping_to_path(uri, @config, ".html")
    if @config[:output_dir]
      file = File.join(@config[:output_dir], file)
    end
    if template.find_template_path("_default.html.erb")
      param[:additional_content] = template.to_html_raw("_default.html.erb", param)
    end
    template.output_to(file, param)
  end
  index_html = "index.html"
  index_html = File.join(@config[:output_dir], "index.html") if @config[:output_dir]
  if @config.has_key? :top_class
    subjects = []
    @data.each do |s, v|
      if @data[s][RDF.type.to_s] and @data[s][RDF.type.to_s].include?(@config[:top_class])
        subjects << s
      end
    end
    if subjects.empty?
      $stderr.puts "WARN: top_class parameter specified as [#{@config[:top_class]}], but there is no instance data."
    else
      template = Template.new("index.html.erb", @config)
      param = @config.dup
      param[:class_label] = template.get_title(@data[@config[:top_class]], nil)
      param[:data_global] = @data
      param[:data_inverse_global] = @data_inverse
      param[:versions] = versions
      param[:toplevel] = toplevel
      param[:description] = template.to_html_raw("description.html", {}) if template.find_template_path("description.html")
      subjects.sort.each do |subject|
        objects = []
        if @config.has_key? :top_additional_property
          @config[:top_additional_property].each do |property|
            if @data[subject][property]
              objects += @data[subject][property]
            end
          end
        end
        param[:index_data] ||= []
        param[:index_data] << {
          subject.to_s => objects
        }
      end
      param[:output_file] = index_html
      param[:index_list] = template.to_html_raw("index-list.html.erb", param)
      template.output_to(index_html, param)
    end
  end
  if template.find_template_path("about.html") or shapes.size > 0 or versions.size > 0 or toplevel.size > 0
    about_html = @config[:about_file] || "about.html"
    about_html =  File.join(@config[:output_dir], about_html) if @config[:output_dir]
    template = Template.new("about.html.erb", @config)
    param = @config.dup
    param[:content] = template.to_html_raw("about.html", {}) if template.find_template_path("about.html")
    param[:data_global] = @data
    param[:versions] = versions
    param[:toplevel] = toplevel
    param[:description] = template.to_html_raw("description.html", {}) if template.find_template_path("description.html")
    param[:shapes] = {}
    shapes.each do |subject|
      orders = []
      if param[:shape_orders]
        param[:shape_orders].index(subject)
        orders << ( param[:shape_orders].index(subject) or Float::INFINITY )
      end
      orders << subject
      label = comment = nil
      target_class = @data[subject.to_s]["http://www.w3.org/ns/shacl#targetClass"]
      if target_class
        target_class = target_class.first
        if @data[target_class]
          label = template.get_title(@data[target_class], nil)
          comment = template.get_language_literal(@data[target_class]["http://www.w3.org/2000/01/rdf-schema#comment"]) if @data[target_class]["http://www.w3.org/2000/01/rdf-schema#comment"]
        else
          label = template.format_property(target_class)
        end
      else
        label = template.get_title(@data[subject.to_s])
      end
      html = template.expand_shape(@data, subject.to_s, @prefix)
      next if html.nil?
      param[:shapes][subject] = {
        label: label,
        comment: comment,
        html: html,
        target_class: target_class,
        order: orders,
      }
    end
    template.output_to(about_html, param)
  end
end

#output_turtle_files ⇒ Object 



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# File 'lib/ttl2html.rb', line 474

def output_turtle_files
  Dir.mkdir @config[:output_dir] if @config[:output_dir] and not File.exist? @config[:output_dir]
  each_data(:output_turtle_files) do |uri, v|
    file = uri_mapping_to_path(uri, @config, ".ttl")
    if @config[:output_dir]
      Dir.mkdir @config[:output_dir] if not File.exist? @config[:output_dir]
      file = File.join(@config[:output_dir], file)
    end
    dir = File.dirname(file)
    FileUtils.mkdir_p(dir) if not File.exist?(dir)
      str = format_turtle(uri)
    str << format_turtle_inverse(uri)
    open(file, "w") do |io|
      io.puts str.strip
    end
  end
end

#shapes2labels(shapes) ⇒ Object 



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# File 'lib/ttl2html.rb', line 345

def shapes2labels(shapes)
  labels = {}
  shapes_parse(shapes) do |target_class, property|
    path = @data[property]["http://www.w3.org/ns/shacl#path"].first
    name = @data[property]["http://www.w3.org/ns/shacl#name"]
    labels[target_class] ||= {}
    labels[target_class][path] = name
  end
  labels
end

#shapes2orders(shapes) ⇒ Object 



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# File 'lib/ttl2html.rb', line 355

def shapes2orders(shapes)
  orders = {}
  shapes_parse(shapes) do |target_class, property|
    path = @data[property]["http://www.w3.org/ns/shacl#path"].first
    order = @data[property]["http://www.w3.org/ns/shacl#order"]
    orders[target_class] ||= {}
    orders[target_class][path] = order&.first&.to_i
  end
  orders
end

#shapes_parse(shapes) ⇒ Object 



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# File 'lib/ttl2html.rb', line 321

def shapes_parse(shapes)
  shapes.each do |shape|
    target_class = @data[shape]["http://www.w3.org/ns/shacl#targetClass"]&.first
    if target_class
      properties = @data[shape.to_s]["http://www.w3.org/ns/shacl#property"]
      if @data[shape.to_s]["http://www.w3.org/ns/shacl#or"]
        properties ||= []
        node_list = @data[shape.to_s]["http://www.w3.org/ns/shacl#or"].first
        while node_list and @data[node_list] do
          sub_shape = @data[node_list]["http://www.w3.org/1999/02/22-rdf-syntax-ns#first"].first
          if @data[sub_shape] and @data[sub_shape]["http://www.w3.org/ns/shacl#property"]
            properties += @data[sub_shape]["http://www.w3.org/ns/shacl#property"]
          end
          node_list = @data[node_list]["http://www.w3.org/1999/02/22-rdf-syntax-ns#rest"].first
        end
      end
      if not properties.empty?
        properties.each do |property|
          yield target_class, property
        end
      end
    end
  end
end