Class: ArgParser

Inherits:
Object
  • Object
show all
Includes:
Logging
Defined in:
lib/argparser.rb

Class Method Summary collapse

Methods included from Logging

#init_logger, #log_level=, #log_target=

Class Method Details

.parse(args) ⇒ Object

Returns a structure describing the options.



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# File 'lib/argparser.rb', line 35

def self.parse(args)
	# The options specified on the command line will be collected in <b>options</b>.
	# We set default values here.
	options = OpenStruct.new
	options.fast = false 
	options.line = 0 
	options.file = nil

	op = OptionParser.new do |opts|
		opts.banner = "Usage:\t" << "%s -s [textfile] <options>" %($0) <<"\n"

		opts.separator ""
		opts.separator "Specific options:"

		opts.on('-' << "sFILE", '--' << "source FILE", "read this file") do |file|
			options.file = file
		end

		opts.on('-' << "f", '--' << "fast", "display at once entire lines") do |fast|
			options.fast = true
		end
		opts.on('-' << 'lLINE', '--' << "line LINE", "start reading file at line 'line'") do |line|
			options.line = line.to_i - 1
		end

		opts.separator ""
		opts.separator ("Common options") << ':'

		# No argument, shows at tail.  This will print an options summary.
		opts.on_tail(("-h"), ("--help"), ("Show this message") ) do
			puts opts
			exit true
		end

		opts.on_tail(("-v"), ("--version"), ("Show version and program information") ) do
			puts "\t#{APPNAME}, version #{VERSION} (called as #{$0})"
			puts "\t© 2015-#{YEAR} #{AUTHOR} #{AMAIL}>"
			exit true
		end
	end

	op.parse!(args)
	options
end