Class: Tailstrom::OptionParser

Inherits:
Object
  • Object
show all
Defined in:
lib/tailstrom/option_parser.rb

Constant Summary collapse

DEFAULTS =
{
  :delimiter => "\t",
  :interval => 1,
  :mode => :stat,
  :order => :desc
}.freeze

Instance Method Summary collapse

Constructor Details

#initializeOptionParser

Returns a new instance of OptionParser.



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# File 'lib/tailstrom/option_parser.rb', line 12

def initialize
  @options = {}
  @options_from_file = {}
end

Instance Method Details

#generate_parserObject



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# File 'lib/tailstrom/option_parser.rb', line 27

def generate_parser
  ::OptionParser.new do |opt|
    opt.banner = "tail -f access.log | \#{$0} [OPTIONS]\n\#{$0} [OPTIONS] [file]\n    END\n    opt.on('-c file', '--config file', String, 'config file') do |v|\n      @options_from_file = load_config v\n    end\n    opt.on('-f num', Integer, 'value field') do |v|\n      @options[:field] = v\n    end\n    opt.on('-k num', Integer, 'key field') do |v|\n      @options[:key] = v\n    end\n    opt.on('-d delimiter', String, 'delimiter') do |v|\n      @options[:delimiter] = v\n    end\n    opt.on('-i interval', Integer, 'interval for stat mode') do |v|\n      @options[:interval] = v\n    end\n    opt.on('-e file_or_string', '--in-filter file_or_string', String, 'input filtering') do |v|\n      @options[:in_filter] = file_or_string v\n    end\n    opt.on('--map file_or_string', String, 'input mapping') do |v|\n      @options[:map] = file_or_string v\n    end\n    opt.on('--out-filter file_or_string', String, 'output filtering') do |v|\n      @options[:out_filter] = file_or_string v\n    end\n    opt.on('--sort file_or_string', String, 'output sorting') do |v|\n      @options[:sort] = file_or_string v\n    end\n    opt.on('--order desc|asc', String, 'sorting order (default=desc)') do |v|\n      @options[:order] = v.to_s.downcase == 'asc' ? :asc : :desc\n    end\n    opt.on('--stat', 'statistics mode (default)') do\n      @options[:mode] = :stat\n    end\n    opt.on('--print', 'print line mode') do\n      @options[:mode] = :print\n    end\n    opt.on('--version', 'show version') do\n      require 'tailstrom/version'\n      puts Tailstrom::VERSION\n      exit 0\n    end\n  end\nend\n"

#parse(argv) ⇒ Object



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# File 'lib/tailstrom/option_parser.rb', line 17

def parse(argv)
  parser = generate_parser
  parser.order! argv
  if infile = argv.shift
    @options[:static_infile] = open(infile, 'r')
  end
  @options = @options_from_file.merge @options
  DEFAULTS.merge @options
end