Class: Jekyll::LunrJsSearch::Indexer

Inherits:
Generator
  • Object
show all
Defined in:
lib/jekyll_lunr_js_search/indexer.rb

Instance Method Summary collapse

Constructor Details

#initialize(config = {}) ⇒ Indexer

Returns a new instance of Indexer.



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# File 'lib/jekyll_lunr_js_search/indexer.rb', line 10

def initialize(config = {})
  super(config)

  lunr_config = {
    'excludes' => [],
    'strip_index_html' => false,
    'min_length' => 3,
    'stopwords' => 'stopwords.txt'
  }.merge!(config['lunr_search'] || {})

  @excludes = lunr_config['excludes']

  # if web host supports index.html as default doc, then optionally exclude it from the url
  @strip_index_html = lunr_config['strip_index_html']

  # stop word exclusion configuration
  @min_length = lunr_config['min_length']
  @stopwords_file = lunr_config['stopwords']

  @dev_mode = lunr_config['dev_mode']

  # File I/O: create search.json file and write out pretty-printed JSON
  @filename = 'search.json'

  @generation_strftime = "%m-%d-%y"
end

Instance Method Details

#generate(site) ⇒ Object

Index all pages except pages matching any value in config or with date The main content from each page is extracted and saved to disk as json



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# File 'lib/jekyll_lunr_js_search/indexer.rb', line 39

def generate(site)
  search_json_location_source = File.expand_path("search/search.json", site.source)
  search_json_location_dest = File.expand_path("search.json", site.dest)

  if @dev_mode && File.exist?(search_json_location_source)
    search_json = JSON.parse(File.open(search_json_location_source).read)
    if search_json["generation_time"] && Date.strptime(search_json["generation_time"], @generation_strftime).day == Time.now.day
      puts "\nNot running indexer in dev mode since search.json exists within the last day...\n"
      return
    end
  end

  puts "\nRunning the search indexer...\n"

  # gather pages and posts
  items = pages_to_index(site)

  site.collections.each do |name, collection|
    collection.docs.each{ |document| items << document }
  end

  content_renderer = PageRenderer.new(site)
  index = []

  items.each do |item|
    entry = SearchEntry.create(item, content_renderer)

    next if entry.nil?

    entry.strip_index_suffix_from_url! if @strip_index_html
    entry.strip_stopwords!(stopwords, @min_length) if File.exists?(@stopwords_file)

    index << {
      :title => entry.title,
      :url => entry.url,
      :date => entry.date,
      :categories => entry.categories,
      :collection => entry.collection,
      :class => entry.class,
      :body => entry.body,
      :excerpt => entry.body[0..140] + "…"
    }

    # puts 'Indexed ' << "#{entry.title} (#{entry.collection} - #{entry.url})"
  end

  json = {:generation_time => Time.now.strftime(@generation_strftime), :entries => index}

  # Create destination directory if it doesn't exist yet. Otherwise, we cannot write our file there.
  Dir::mkdir(site.dest) unless File.directory?(site.dest)

  File.open(search_json_location_dest, "w") do |file|
    file.write(JSON.pretty_generate(json))
  end
  site.keep_files ||= []
  site.keep_files << "search.json"

  if @dev_mode
    File.open(search_json_location_source, "w") do |file|
      file.write(JSON.pretty_generate(json))
    end
  end
end