Contents

module RTUI
  class Table
    def initialize(title, items, *fields)
      @title = title
      @items = items
      @fields = fields
    end

    # http://gist.github.com/72234
    def print
      return if @items.empty?
      puts @title
      #find max length for each field; start with the field names themselves
      @fields = @items.first.class.column_names unless @fields.any?
      max_len = Hash[*@fields.map {|f| [f, f.to_s.length]}.flatten]
      @items.each do |item|
        @fields.each do |field|
          len = item.send(field).to_s.length
          max_len[field] = len if len > max_len[field]
        end
      end

      border = '+-' + @fields.map {|f| '-' * max_len[f] }.join('-+-') + '-+'
      title_row = '| ' + @fields.map do |f|
        sprintf("%-#{max_len[f]}s", f.to_s.split("_")[0].capitalize)
      end.join(' | ') + ' |'

      puts border
      puts title_row
      puts border

      @items.each do |item|
        row = '| ' + @fields.map do |f|
          sprintf("%-#{max_len[f]}s", item.send(f))
        end.join(' | ') + ' |'
        puts row
      end

      puts border
      puts "#{@items.length} items\n"
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
rtui-0.2.2	lib/rtui/table.rb
rtui-0.2.1	lib/rtui/table.rb