module Wordmap::Builder

Public Instance Methods

build_vectors(hash) click to toggle source
# File lib/wordmap/builder.rb, line 7
def build_vectors(hash)
  vectors = hash.first[0].is_a?(Array) ? hash.keys.transpose : [hash.keys]
  vectors.map!(&:uniq)
  vectors.map!(&:sort)
  vectors
end
rjust_bytes(string, bytesize, spacer) click to toggle source
# File lib/wordmap/builder.rb, line 44
def rjust_bytes(string, bytesize, spacer)
  difference = bytesize - string.bytesize
  (spacer * difference) + string
end
write_data(path, vecs, cells_c, hash, spacer) { |key, value, cell_i| ... } click to toggle source

TODO: drop null bytes at the beginning (offset in meta) TODO: drop null bytes at the end

# File lib/wordmap/builder.rb, line 16
def write_data(path, vecs, cells_c, hash, spacer)
  File.open("#{path}/data", 'wb') do |file|
    cell_w = hash.values.max_by(&:bytesize).bytesize
    file.write("#{cell_w},#{cells_c}#{spacer}")

    key_iterator =
      vecs.size == 1 ? vecs[0].each : vecs[0].product(*vecs[1..-1]).to_enum

    key_iterator.with_index do |key, cell_i|
      value = hash[key].to_s
      yield(key, value, cell_i) unless value.empty?
      file.write(rjust_bytes(value, cell_w, spacer))
    end
  end
end
write_vector(path, vector, spacer) click to toggle source
# File lib/wordmap/builder.rb, line 32
def write_vector(path, vector, spacer)
  cell_w = vector.max_by(&:bytesize).bytesize

  File.open(path, 'wb') do |file|
    file.write("#{cell_w},#{vector.size}#{spacer}")

    vector.each do |key|
      file.write(rjust_bytes(key.to_s, cell_w, spacer))
    end
  end
end